WO1994001787A1 - Vehicular distance measuring system with integral mirror display - Google Patents

Vehicular distance measuring system with integral mirror display Download PDF

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Publication number
WO1994001787A1
WO1994001787A1 PCT/US1993/006345 US9306345W WO9401787A1 WO 1994001787 A1 WO1994001787 A1 WO 1994001787A1 US 9306345 W US9306345 W US 9306345W WO 9401787 A1 WO9401787 A1 WO 9401787A1
Authority
WO
WIPO (PCT)
Prior art keywords
distance
display
vehicular
signal
distance measuring
Prior art date
Application number
PCT/US1993/006345
Other languages
French (fr)
Inventor
Dale R. Gauthier
Thomas R. Wayne
Original Assignee
Trend Tec Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Trend Tec Inc. filed Critical Trend Tec Inc.
Priority to AU46648/93A priority Critical patent/AU4664893A/en
Publication of WO1994001787A1 publication Critical patent/WO1994001787A1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
    • G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/0017—Devices integrating an element dedicated to another function
    • B60Q1/0023—Devices integrating an element dedicated to another function the element being a sensor, e.g. distance sensor, camera
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
    • B60Q9/002—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for parking purposes, e.g. for warning the driver that his vehicle has contacted or is about to contact an obstacle
    • B60Q9/004—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for parking purposes, e.g. for warning the driver that his vehicle has contacted or is about to contact an obstacle using wave sensors
    • B60Q9/005—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for parking purposes, e.g. for warning the driver that his vehicle has contacted or is about to contact an obstacle using wave sensors using a video camera
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
    • B60Q9/002—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for parking purposes, e.g. for warning the driver that his vehicle has contacted or is about to contact an obstacle
    • B60Q9/007—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for parking purposes, e.g. for warning the driver that his vehicle has contacted or is about to contact an obstacle providing information about the distance to an obstacle, e.g. varying sound
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/521—Constructional features
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/64—Luminous indications
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/10—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of camera system used
    • B60R2300/101—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of camera system used using cameras with adjustable capturing direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/10—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of camera system used
    • B60R2300/103—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of camera system used using camera systems provided with artificial illumination device, e.g. IR light source
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/10—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of camera system used
    • B60R2300/105—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of camera system used using multiple cameras
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/10—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of camera system used
    • B60R2300/106—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of camera system used using night vision cameras
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/20—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of display used
    • B60R2300/207—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of display used using multi-purpose displays, e.g. camera image and navigation or video on same display
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/30—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of image processing
    • B60R2300/301—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of image processing combining image information with other obstacle sensor information, e.g. using RADAR/LIDAR/SONAR sensors for estimating risk of collision
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/30—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of image processing
    • B60R2300/303—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of image processing using joined images, e.g. multiple camera images
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
    • B60R2300/802—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for monitoring and displaying vehicle exterior blind spot views
    • B60R2300/8026—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for monitoring and displaying vehicle exterior blind spot views in addition to a rear-view mirror system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
    • B60R2300/8053—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for bad weather conditions or night vision
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/86—Combinations of sonar systems with lidar systems; Combinations of sonar systems with systems not using wave reflection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
    • G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2015/937—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details
    • G01S2015/938—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details in the bumper area
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/78—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using electromagnetic waves other than radio waves
    • G01S3/782—Systems for determining direction or deviation from predetermined direction
    • G01S3/785—Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system
    • G01S3/786—Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system the desired condition being maintained automatically
    • G01S3/7864—T.V. type tracking systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/52004—Means for monitoring or calibrating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S367/00—Communications, electrical: acoustic wave systems and devices
    • Y10S367/909—Collision avoidance

Definitions

  • the system relates generally to electronic distance measuring systems and, more specifically, to an ultrasonic vehicular distance measuring system having a numeric distance display integrated into a vehicle rear view mirror.
  • Mirrors further limit visual clues necessary for operator judgment of distance to an obstruction by limiting operator depth perception. This is a particular problem when backing a vehicle when the operator requires accurate distance information to maneuver a vehicle (e.g., a semi-tractor trailer) toward an obstruction such as a loading dock. Because of the relatively large distance between the operator and the rear of the vehicle, smaller obstructions may go unnoticed. This is also true in blind areas one either side of a vehicle where direct driver observation is not possible and mirror systems provide incomplete coverage.
  • Electronic obstruction detecting and ranging systems use ultrasonic, radar and infrared emitters and receivers to bounce energy off an obstruction. the systems measure the time required for the emitted energy to travel to and from the obstruction to determine a distance to the obstruction.
  • the calculated distance is displayed on a • three digit display mounted on a dashboard of the vehicle.
  • the system includes ultrasonic transmitting/receiving units, a control unit and a digital display unit.
  • Tendler U.S. Patent No. 4,937,796 describes a method and apparatus for providing a voice alert to a vehicle operator.
  • the apparatus uses sonar to detect a distance from the rear of a vehicle to a structure such as a loading dock to which the vehicle is being backed.
  • a device converts a detected range into an audible call out of the distance from the back of the vehicle to the structure.
  • Naruse U.S. Patent No. 4,674,073 describes an apparatus for use in a vehicle for ultrasonically locating and ranging an object in relation to the vehicle.
  • a plurality of ultrasonic transmitting and receiving elements are alternately arranged in a linear array and sequentially activated to detect and locate an object.
  • a digital display shows the location and distance to a detected object.
  • Chev U.S. Patent No. 4,626,850 describes an apparatus for use in a vehicle for ultrasonically locating and ranging an object in the vicinity of the vehicle.
  • An ultrasonic transducer is rotated in azimuth to scan an area for objects. Audio and visual display of distance and direction to a detected object are provided.
  • an object of the invention is to provide an vehicular digital distance display system for providing precise obstruction distance information to an operator without requiring the operator to divert attention away from other visual systems .
  • Another object of the invention is to provide an digital distance display system usable with tractor- trailer combinations and other vehicles having an obstructed rear view.
  • Another object of the invention is to provide a digital distance display system which minimizes operator distraction until an obstruction is detected within a predetermined hazard or threshold range.
  • Another object of the invention is to provide a non-obtrusive vehicular mount for a distance measuring sensor.
  • a vehicular distance measuring system includes a distance measuring device for detecting a distance to an object and, in response, supplying a distance signal.
  • a display includes (i) a vehicular mirror having an image reflecting surface with a transparent window portion located therein, and (ii) a digital display mounted on the vehicular mirror and viewable through the window portion. The digital display is responsive to the distance signal for displaying the detected distance to the object.
  • the distance measuring device includes a comparator for comparing the distance to the object with a predetermined threshold distance and, in response, supplying a display unblank signal.
  • the digital display is responsive to the display unblank signal for selectively blanking the digital display and displaying the detected distance to the object.
  • the display includes an illumination device such as light emitting diodes (LEDs) responsive to the display unblank signal for illuminating the digital display.
  • the distance measuring device includes an ultrasonic transmitter and receiver, a timing circuit and a distance calculating processor.
  • the ultrasonic transmitter is responsive to a transmit signal for emitting an ultrasonic wave.
  • the ultrasonic receiver receives a reflected ultrasonic wave and, in response, supplies a received signal.
  • the timing circuit measures a time period between the emission of the ultrasonic wave by the ultrasonic transmitter and reception of the reflected ultrasonic wave by the ultrasonic receiver. In response to the measured time period, the distance conversion processor supplies the distance signal to the display.
  • the ultrasonic transmitter and receiver are contained within a vehicle light assembly such as a taillight assembly.
  • the taillight assembly includes a shell with a bulb or other light emitting means mounted in the shell for supplying an externally perceptible visible light.
  • a lens is secured to the shell for transmitting the visible light and the ultrasonic wave.
  • the digital display includes a binary-coded-decimal (BCD) decoder receiving the distance signal and, in response, supplies a display driver signal.
  • a numeric display is responsive to the display driver signal for displaying the detected distance to the object.
  • the numeric display may comprise a pair of seven-segment liquid crystal displays (LCDs) or light emitting diodes (LEDs.)
  • the display includes a mount for attaching the display to an outer portion of a vehicle.
  • a heater is provided to electrically heat the vehicular mirror to defrost and/or defog the mirror and the display.
  • a vehicular distance measuring system includes a distance measuring device having (i) a first sensor channel for detecting a distance to an object located in a first space and, in response, supplying a first sensor signal, and (ii) a processor responsive to the first sensor channel for supplying a first distance signal.
  • a distance display system includes (i) a vehicular rear view mirror having an image reflecting surface and a first transparent window located in a portion of the image reflecting surface, and (ii) a first numeric display mounted on the vehicular rear view mirror. The numeric display is visible to a vehicle operator through the first transparent window and is responsive to the first distance signal for displaying the detected distance to the object to the operator.
  • the processor supplies an unblank display signal to the numeric display in response to detecting the object within a predetermined distance, the first numeric display being responsive to the unblank display signal for selectively blanking and displaying the detected distance.
  • the distance display system includes a display illumination device responsive to the unblank display signal from the distance measuring means for illuminating the numeric display.
  • the first numeric display may be selectively blanked in response to the unblank display signal in response to a detected distance greater than the predetermined distance while displaying a detected distance less than the predetermined distance.
  • the vehicular distance measuring system includes a second channel to detect obstructions in a second area distinct from the first.
  • the distance measuring device includes a second sensor channel for detecting a distance to an object located in a second space and, in response, supplies a second sensor signal.
  • the processor is responsive to the second sensor channel for supplying a second distance signal to a second numeric display device mounted in the vehicle mirror.
  • a combination vehicular light and sensor housing includes a vehicular mountable shell with a light emitting element mounted in the shell for supplying visible light. A lamp socket and bracket are provided for mounting the light emitting element in the shell.
  • a transducer is mounted in the shell spaced from the lamp socket for emitting and receiving a probe signal used to measure a distance.
  • An optically translucent lens is mounted to the shell for transmitting the visible r light and the probe signal in a desired direction.
  • the lens may include an aperture through which the probe signal is transmitted and echo signals are received.
  • probe signal uses ultrasonic wave energy to detect and range an object.
  • the lens may be in the form of a clear or colored plastic cover substantially transparent to the ultrasonic wave energy and translucent to the visible light.
  • the lens may include a series of concentric ridges forming a Freznel lens.
  • Figure 1 is a side view of a vehicular distance measuring system according to the invention installed in a vehicle.
  • Figure 2 is a plan view of the vehicle of Figure 1 including the vehicular distance measuring system according to the invention.
  • Figure 3 is a view of major components forming the vehicular distance measuring system according to the invention.
  • Figure 4 is a front view of a mirror system according to the invention including a vehicle side view mirror and a pair of integral digital distance displays.
  • Figure 5 is a partial sectional view of the mirror system of Figure 4.
  • Figure 6 is a front view of an alternate mirror system according to the invention.
  • Figure 7A is a front view of an ultrasonic transducer.
  • Figure 7B is a sectional side view of the ultrasonic transducer of figure 7A.
  • Figure 7C is a rear view of the ultrasonic transducer of figure 7A.
  • Figure 7D is a sectional top view of the ultrasonic transducer of figure 7A.
  • Figure 8 is a perspective view of a sonic transmitter/receiver unit.
  • Figure 9a is a partial front sectional view of a ultrasonic sensor enclosure.
  • Figure 9b is a sectional view of the enclosure of Figure 9a.
  • Figure 9c is another sectional view of the enclosure of Figure 9a.
  • Figure 10a is a front view of an ultrasonic sensor back panel.
  • Figure 10b is a bottom sectional view of the back panel of Figure 10a.
  • Figure 11a is a front view of an ultrasonic mounting bracket.
  • Figure lib is a bottom view of the mounting bracket of Figure 11a.
  • Figure lie is a side view of the mounting bracket of Figure 11a.
  • Figure 12a is a front view of an ultrasonic sensor front panel.
  • Figures 12b and 12c are sectional views of the front panel of Figure 11a.
  • Figure 13a is a front view of a vehicle taillight assembly with lens cover removed to show integral ultrasonic transducer installed.
  • Figure 13b is a partial sectional view of the vehicle taillight assembly of figure 13a with lens cover installed.
  • Figure 14a is a rear view of a vehicle with the vehicle taillight assembly of figure 13a installed.
  • Figure 14b is a partial side view of the vehicle of figure 14a.
  • Figure 15a is a side view of a connection box according to the invention.
  • Figure 15b is a view of another side of the connection box of Figure 15a.
  • Figure 15c is a front view of the connection box of Figures 15a and 15b.
  • Figure 16 is a schematic diagram of the controller and display electronics of the vehicular distance measuring system according to the invention.
  • Figure 17 is a schematic diagram of the ultrasonic transducer and ultrasonic receiver and transmitter circuitry according to the invention.
  • a vehicle 20 includes a combination of a tractor 22 and trailer 24.
  • a plurality of transceivers 60 functioning as obstruction distance sensors are mounted on a rear bumper 26 of vehicle 20.
  • the transmitters/receivers emit an ultrasonic acoustic energy wave having a frequency of 40 to 50 kiloHertz (kHz) rearward from the vehicle into a detection space immediately behind the vehicle.
  • Mirror display system 40 includes a conventional reflective side view mirror with a digital display mounted thereon. The digital display is visible through a transparent window in the mirror for indicating distance to a detected obstruction. //
  • Each transceiver 60 emits ultrasonic acoustic energy in a conical pattern.
  • a linear array 62 of transceivers 60 is mounted along bumper 26 as shown in Figure 2 to achieve a desired rearward obstruction detection space.
  • the transceiver 60 is wired in parallel to simultaneously emit a pulse of ultrasonic acoustic energy and provide overlapping receive capability of a return ultrasonic echo signal.
  • Rear array 62 of transceivers 60 in combination with associated processing and control circuitry described below provides complete sensor coverage to detect and provide range information to obstructions located within ten feet of the rear of the vehicle. This information is provided to the vehicle operator by the digital display visible in mirror display system 40 for collision avoidance. For example, the vehicle operator can back vehicle 20 to a bay or dock while visually checking for obstructions in mirror display system 40 and simultaneously observing the distance to the bay or dock indicated by the digital display.
  • transceivers can be mounted along a side of the vehicle to provide augmented collision avoidance.
  • Side facing sensor array 64 includes three transceivers 60 for detecting obstructions along the right side of vehicle 20. The array is oriented to detect vehicles in a space not readily visible to the vehicle operator and provides distance sensor information to a second channel of the processing and control circuitry for display on a second digital display of mirror display system 40.
  • the vehicular distance measuring system includes three major components as shown in Figure 3: mirror display system 40 with integral digital display, one or /*- more ultrasonic transceivers 60 and connection box 80.
  • mirror display system 40 includes a reflective "West Coast Style" side view mirror 41, approximately seven inches wide by sixteen inches high with a deep drawn stainless steel back.
  • Mirror element 42 is either first surface chrome or silvered glass sealed in a vinyl channel to prevent component damage and to absorb shock and road vibration.
  • Mirror display system 40 includes one or two back lighted three digit LCD displays 44,46 visible through clear windows in the mirror element. The mirror may be heated to defog or deice the unit.
  • Connection box 80 supplies power to LCD display 44,46 and back-lights (not shown) and includes circuitry for operating transceiver 60 to detect and calculate a range of obstructions .
  • the connection box includes a conventional microprocess or microcontroller for operating and receiving echo signals from the transceiver 60, calculating a range to a sensed object, comparing the calculated range with predetermined display activation maximum distance values and, in response, activating and supplying range data signals to respective displays 44 and 46.
  • Connection box 80 accommodates up to two channels of sensor inputs for sensor located on the rear and one side of the vehicle. Each channel controls one or more transceivers 60 for detecting obstructions behind or to one side of the vehicle. Multiple transceiver units provide inputs to a channel to increase lateral coverage of the system. As shown in Figure 2, multiple transceivers 60 are located along the rear and side of trailer 24 to insure full sensor coverage. The transceiver unit of both channels transmit in parallel to emit ultrasonic acoustic waves. Return ultrasonic echo signals are separately supplied by each group of sensors to the associated channel and separately processes and displayed on a respective LCD display 44, 46. Ultrasonic transducers constituting transceivers 60 are commercially available, for example, from the Polaroid Corporation.
  • Each unit includes an ultrasonic transmitter for emitting an ultrasonic signal of about 50 kHz and a receiver for sensing a reflection of the emitted signal.
  • the connection box 80 measures the time difference and calculates a distance to a sensed obstruction. If the sensed obstruction is calculated to be within a predetermined distance specified for that sensor channel, the respective LCD display and back light are activated and the distance to the obstruction is displayed.
  • Ultrasonic transceivers 60 are connected in series or are "daisey chained" by interconnect cables 66 to form a first channel of sensors mounted along the rear bumper of the vehicle in linear array 62.
  • the first channel of sensors is connected by cable 68a to connection box 80 mounted in the cab of the vehicle tractor 22.
  • Connection box 80 includes a controller for driving transceivers 60 to emit an ultrasonic pulse, receiving a return ultrasonic echo, computing a distance to an obstruction reflecting the ultrasonic wave, and supplying a binary coded decimal (BCD) data signal indicating the computed distance.
  • a second array of ultrasonic transceiver (not shown) forming a second sensor channel is connected to connection box 80 by cable 68b.
  • Multiple LCD displays 44a, 46a are located along opposite side of the mirror element 42a and are visible through transparent windows formed therein.
  • An ultrasonic transducer 72 is shown in figures 7A-7D.
  • the unit is relatively small in size, measuring approximately 1*$ inches wide by 1 inch high by h inch deep.
  • the transducer functions as a loudspeaker to emit a pulse of ultrasonic energy and as an electrostatic microphone to receive the reflected signal or "echo.”
  • the transducer may be mounted as shown in Figure 8 to provide a complete ultrasonic transceiver 60.
  • transceiver 60 includes housing 70 with ultrasonic transducer 72 mounted therein.
  • Housing 70 is made of conventional sheet metal and includes a box shaped front cover 71 ( Figures 9a-9c) having an open back and an opposite front.
  • a large square central aperture in the front is covered with an acoustically transparent screen 76 to protect transducer 72 from foreign objects.
  • Cover 71 engages a peripheral lip of square ultrasonic sensor back panel 72 ( Figures 10a and 10b) and is secured to sensor back panel 72 using bolts inserted through holes 73 of cover 71 engaging corresponding threaded apertures 75 in the lip of back panel 72.
  • Sensor back panel 72 is secured to a vehicle by through-bolts 78.
  • housing 70 may be attached to a vehicle using L-shaped ultrasonic mounting bracket 79 ( Figures lla-llc) which engages and secures to sensor back panel 72 using through bolts 78.
  • Transducer 72 is centrally positioned within housing 70 by front panel 74.
  • front panel 74 is formed in the shape of a square with a large central square recessed portion.
  • An oval aperture is formed in the recess portion with a plurality of holes formed thereabout for securing a transceiver to the panel.
  • the ultrasonic transducer is relatively small, it may instead be incorporated into an existing vehicle structure with minimal modification.
  • Light units such as taillight assemblies provide environmental protection for the transducer.
  • the assemblies include an ultrasonic transparent plastic covering as shown in Figures 13a and 13b or an aperture through the plastic.
  • Taillight assembly 130 includes a metallic taillight shell 132 with a peripheral lip for mounting the assembly in an aperture formed in the body of a vehicle.
  • a socket lamp 134 is mounted to shell 132 by a bracket.
  • An incandescent lamp 136 is installed in lamp socket 134 and is supplied with electric power through insulated electric wire 138 to illuminate lamp 136.
  • Transducer 72 is installed below lamp 136 and is supported directly behind lens cover 140 by a conventional bracket member (not shown.)
  • Lens 140 may be a multifaceted optically translucent plastic material for projecting light emitted from lamp 136.
  • the lens may form a Freznel lens to further direct and concentrate light from lamp 136.
  • the plastic may be optically clear, partially opaque or colored as is conventional for vehicle taillights and running lights.
  • a suitable plastic type and thickness is chosen.
  • an aperture 142 through the plastic or a window area of a suitable ultrasonic transparent material, such as a fine screen material, may be provided in the lens to minimize attenuation of the transmitted and received signals. / (,
  • vehicle 150 includes a taillight assembly 130 mounted in the rear portion 152 of the vehicle.
  • the vehicular measuring system may be readily installed in a vehicle by either modifying or replacing an existing taillight to incorporate an ultrasonic transducer without requiring modifications to the structure of the vehicle.
  • Including an ultrasonic transducer in a taillight assembly 130 or running light assembly 154 on a side of the vehicle further accommodates optimal placement of the transducers without removing or relocating existing vehicle lighting.
  • connection box 80 includes a first side face 82 including connectors 84 and 86 for connecting electronics contained within the connection box to first and second daisey chained channels of transceivers.
  • An opposite side panel 88 includes a connector 90 accepting cable 82 for supplying signals to mirror display system 40.
  • Connector 92 is used to supply d.c. power to the connection box which distributes power to the other systems as required.
  • a front panel 94 includes a power fuse holder 96 and a display mode switch 98 for selecting digital display readings in either feet or meters.
  • the control electronics housed in connector box 80 and the display electronics of the mirror display system are shown in the schematic diagram of Figure 16.
  • the controller and display electronics 100 of the vehicular distance measuring system includes a conventional microprocessor 102, binary-coded-decimal (BCD) to seven segment converters/drivers (display drivers) 110-116 and seven-segment liquid crystal displays (LCDs) 120.
  • BCD binary-coded-decimal
  • LCDs seven segment liquid crystal displays
  • Microprocessor 102 includes an on-chip erasable programmable read only memory (EPROM) storing a set of operating instructions, random access memory (RAM) for temporary storage of operating data, a central processing unit for performing arithmetic and logic operations, and first and second parallel input/output (I/O) ports PA0-PA7 and PB0-PB5.
  • First I/O port PA0- PA7 of microprocessor 102 includes I/O terminals PA0- PA3 supplying parallel MOS level BCD data signals to display drivers 110-116. The remaining I/O terminals PA7-PA4 of the first I/O port are connected to respective display enable terminals of display drivers 110-116.
  • Output terminals A-G of display drivers 110- 116 are connected to respective segments of dual seven- segment LCD displays 120 and 122.
  • a first I/O terminal PB0 of the second output port is connected in parallel to light emitting diodes (LEDs) 144 through drivers 140 and 142.
  • LEDs 144 are mounted in the mirror display system behind LCD displays 120 and 122 to illuminate the displays in response to detection of an obstruction within a predetermined threshold distance.
  • I/O terminal PB1 of the second output port provides a clock signal to display drivers 110-116 and LCD displays 120 and 122.
  • the clock signal is used to synchronize data transfers from the first output port of microprocessor 102 to display drivers 110-116 and LCD displays 120 and 122.
  • I/O terminal PB2 provides a transmit control signal under program control to each of the transceivers through bipolar transistor Ql .
  • I/O terminal PB3 receives a logic signal from display mode switch 98 through amplifier 136.
  • Microprocessor 102 periodically reads the logic level at I/O terminal PB3 and scales a computed distance to a detected obstruction to selectively display the distance in either feet or meters.
  • I/O terminals PB5 and PB4 receive respective echo signals ECH01 and ECH02 from first and second sensor channels .
  • Each sensor channel includes a comparator 130 receiving at an inverting input an echo signal from a respective ultrasonic transceivers in parallel comprising a sensor channel.
  • a noise suppression capacitor is connected from the inverting input terminal of comparators 130 to ground.
  • a non-inverting input of the comparator is connected to a reference voltage. If any of the transceivers detect an ultrasonic return echo signal, current is drawn through pull-up resistor 134 connected to the inverting input terminal causing the voltage level applied to the inverting terminal to decrease, i.e., go low with respect to the reference voltage.
  • the output from comparator 130 is supplied to invertor 132 which reinverts the signal level and supplies a respective echo signal to input terminals PB5 and PB4.
  • voltage regulator 160 Power to all components of electronics 100 is provided by voltage regulator 160. Nominal vehicle 12 volt power is supplied to voltage regulator 160 which supplied five volt MOS operating voltage to system components. Twelve volt direct current is supplied directly to electrical heater units of the mirror display units .
  • transducer transmit controller 202 which receives a transmit control signal from controller and display electronics 100 and, in II response, provides an ultrasonic output signal of a predetermined duration to transducer 200 through output transistor 204 and output transformer 206.
  • Ultrasonic waves received by transducer 200 are converted to electrical signals and supplied to signal processor 212.
  • Signal processor 212 is responsive to a frequency set by tuned circuit 214 to detect a return echo corresponding to the frequency of the transmitted signal.
  • signal processor 212 supplies a detector signal to an inverting input of comparator 216.
  • the output of comparator 216 is provided in parallel with the output of other transmitters of the channel to controller and display electronics 100.
  • microprocessor 102 periodically supplies a transmit control signal in parallel to ultrasonic transceivers of both channels and initiates a timer.
  • each transceiver In response to the transmit control signal, the transmitters of each transceiver generates an ultrasonic signal causing the respective transducers to emit ultrasonic acoustic wave energy toward areas of potential obstructions or hazards. The acoustic wave energy is bounced off of obstructions, creating an acoustic echo receivable by the transducer. In response to receiving an acoustic echo, the transducer provides a corresponding electrical signal to signal processor 212. The detector output from signal processor 212 is supplied to microprocessor 102 on a corresponding channel. Microprocessor 102 alternately receives signals from each of the channels and, using the timer, determines a round trip time required for the acoustic wave energy to travel to, and return from the obstruction. The microprocessor translates the time into a distance and compares the computed distance to a predetermined threshold distance value for that channel .
  • the system has an accuracy and display resolution of one-tenth of a foot over an operating range of 1.5 inches to over ten feet. Distances to objects over ten feet from the vehicle are suppressed in view of system range constraints and to avoid generating spurious warning indications to the operator.
  • microprocessor 102 If the computed distance is within a display range corresponding to the threshold distance, microprocessor 102 provides a display output signal indicating distance to the obstruction to the corresponding display channel in the selected units, i.e., feet or meters . If no obstruction to the corresponding display channel is detected within the threshold distance for either channel, both displays are blanked and the illumination therefor is extinguished.
  • the inventions include electric heating elements in the mirror display units to defrost, defog and deice the mirrors and to maintain a satisfactory operational environment for the LCD displays .
  • Another feature of the invention includes pellicle mirror portions forming half silvered display windows in the mirror whereby the LCD displays are only visible when back lighted. Blanked displays, being darker than the ambient light level, would not be visible so that the vehicle operator would not be distracted by the display and the full surface area of the mirror unit would constitute usable image area .
  • the invention provides an obstruction detection and ranging system including a mirror display unit providing conventional rear view vision to a driver in combination with an integrated digital display.
  • the digital display is viewable through an at optical window in the mirror whereby the operator does not redirect his or her vision away from the mirror to observe the display. Because the display is blanked when no object is detected within a predetermined distance from the vehicle, the operator is not distracted by spurious indications on the display.
  • mirror display system is described using LCDs. light emitting diode displays may be substituted thereby eliminating the need for separate backlighting LEDs.
  • system is described including two channels of sensors, fewer or greater number of channels may be incorporated to provide a desired hazard warning detection zone.
  • ultrasonic ranging is described, other ranging systems may be used including radio detection and ranging (radar), infrared and radio transponder systems.

Abstract

A vehicular distance measuring system includes a distance measuring device for detecting a distance to an object and, in response, supplying a distance signal. An ultrasonic transducer (72) mounted in a vehicle taillight (130) or running light assembly is used to ultrasonically detect and range objects in back of, and along side a vehicle in which the system is installed. A display includes (i) a vehicular mirror (42) having an image reflecting surface with a transparent window portion (48, 50) located therein, and (ii) a digital display mounted on the vehicular mirror and viewable through the window portion. The digital display is responsive to the distance signal for displaying the detected distance to the object. The distance measuring device includes a comparator for comparing the distance to the object with a predetermined threshold distance and, in response, supplying a display unblank signal. The digital display is responsive to the display unblank signal for selectively blanking the digital display and displaying thedetected distance to the object. The display includes an illumination device such as light emitting diodes (LEDs) responsive to the display unblank signal for illuminating the digital display.

Description

VEHICULAR DISTANCE MEASURING SYSTEM WITH INTEGRAL MIRROR DISPLAY
This is a Continuation-in-Part application of Serial No. 07/484,626 filed February 26, 1990.
Technical Field
The system relates generally to electronic distance measuring systems and, more specifically, to an ultrasonic vehicular distance measuring system having a numeric distance display integrated into a vehicle rear view mirror.
Background Art
While modern vehicle design provides an operator satisfactory forward visibility during vehicle operation, vision in- side and rear directions is often obstructed. To some extend operator vision is augmented by proper placement of mirrors on the vehicle. However, mirrors do not completely eliminate blind spots. For example, it is difficult to provide a satisfactory view toward the rear of a vehicle using mirrors due to obstructions caused by the body of the vehicle. Operator vision toward the rear of the vehicle is further impeded by the relatively large distance from the operator position to the rear of the vehicle common to tractor-trailer combinations and other large vehicles.
Mirrors further limit visual clues necessary for operator judgment of distance to an obstruction by limiting operator depth perception. This is a particular problem when backing a vehicle when the operator requires accurate distance information to maneuver a vehicle (e.g., a semi-tractor trailer) toward an obstruction such as a loading dock. Because of the relatively large distance between the operator and the rear of the vehicle, smaller obstructions may go unnoticed. This is also true in blind areas one either side of a vehicle where direct driver observation is not possible and mirror systems provide incomplete coverage.
Various systems have been proposed in addition to mirrors to augment operator vision. These systems include visual systems using television cameras and monitors to allow visual observation of areas not viewable through mirrors. Television augmentation is relatively expensive, requires the operator to divert his or her attention from other visual systems, and provides limited clues to determine distance to an obstruction.
Electronic obstruction detecting and ranging systems use ultrasonic, radar and infrared emitters and receivers to bounce energy off an obstruction. the systems measure the time required for the emitted energy to travel to and from the obstruction to determine a distance to the obstruction.
Starke et al. U.S. Patent No. 4,903,004, incorporated herein by reference, describes a distance measuring and signalling system for a vehicle for measuring distances to obstructions such as behind a vehicle being backed up. An array of transducers are mounted on a support such as a rear bumper of the vehicle. A pulsed signal is timed as it is converted to an ultrasonic wave signal and its echo detected. S
The calculated distance is displayed on a • three digit display mounted on a dashboard of the vehicle. The system includes ultrasonic transmitting/receiving units, a control unit and a digital display unit. Tendler U.S. Patent No. 4,937,796 describes a method and apparatus for providing a voice alert to a vehicle operator. The apparatus uses sonar to detect a distance from the rear of a vehicle to a structure such as a loading dock to which the vehicle is being backed. A device converts a detected range into an audible call out of the distance from the back of the vehicle to the structure.
Naruse U.S. Patent No. 4,674,073 describes an apparatus for use in a vehicle for ultrasonically locating and ranging an object in relation to the vehicle. A plurality of ultrasonic transmitting and receiving elements are alternately arranged in a linear array and sequentially activated to detect and locate an object. A digital display shows the location and distance to a detected object.
Chev U.S. Patent No. 4,626,850 describes an apparatus for use in a vehicle for ultrasonically locating and ranging an object in the vicinity of the vehicle. An ultrasonic transducer is rotated in azimuth to scan an area for objects. Audio and visual display of distance and direction to a detected object are provided.
Lee U.S. Patent No. 4,943,796 describes a display unit attachable to an inside rear view mirror of an automobile for displaying distance to an object behind the vehicle using ultrasonic sensors .
While the prior art describes ultrasonic detection and ranging devices, conventional visual distance displays require the vehicle operator to divert attention away from other systems to observe the device display. Although Lee describes a display mounted on an inside mirror so that a distance display is observable near he mirror, the system still requires the vehicle operator to divert his or her vision from the mirror to the attached display. Further, this latter system is not usable with tractor-trailer combinations not having an inside rear view mirror.
Accordingly, an object of the invention is to provide an vehicular digital distance display system for providing precise obstruction distance information to an operator without requiring the operator to divert attention away from other visual systems .
Another object of the invention is to provide an digital distance display system usable with tractor- trailer combinations and other vehicles having an obstructed rear view.
Another object of the invention is to provide a digital distance display system which minimizes operator distraction until an obstruction is detected within a predetermined hazard or threshold range.
Another object of the invention is to provide a non-obtrusive vehicular mount for a distance measuring sensor.
Disclosure of the Invention
According to one aspect of the invention, a vehicular distance measuring system includes a distance measuring device for detecting a distance to an object and, in response, supplying a distance signal. A display includes (i) a vehicular mirror having an image reflecting surface with a transparent window portion located therein, and (ii) a digital display mounted on the vehicular mirror and viewable through the window portion. The digital display is responsive to the distance signal for displaying the detected distance to the object.
According to another aspect of the invention, the distance measuring device includes a comparator for comparing the distance to the object with a predetermined threshold distance and, in response, supplying a display unblank signal. The digital display is responsive to the display unblank signal for selectively blanking the digital display and displaying the detected distance to the object. The display includes an illumination device such as light emitting diodes (LEDs) responsive to the display unblank signal for illuminating the digital display. According to a feature of the invention, the distance measuring device includes an ultrasonic transmitter and receiver, a timing circuit and a distance calculating processor. The ultrasonic transmitter is responsive to a transmit signal for emitting an ultrasonic wave. The ultrasonic receiver receives a reflected ultrasonic wave and, in response, supplies a received signal. The timing circuit measures a time period between the emission of the ultrasonic wave by the ultrasonic transmitter and reception of the reflected ultrasonic wave by the ultrasonic receiver. In response to the measured time period, the distance conversion processor supplies the distance signal to the display.
According to a feature of the invention, the ultrasonic transmitter and receiver are contained within a vehicle light assembly such as a taillight assembly. The taillight assembly includes a shell with a bulb or other light emitting means mounted in the shell for supplying an externally perceptible visible light. A lens is secured to the shell for transmitting the visible light and the ultrasonic wave.
According to another feature of the invention, the digital display includes a binary-coded-decimal (BCD) decoder receiving the distance signal and, in response, supplies a display driver signal. A numeric display is responsive to the display driver signal for displaying the detected distance to the object. The numeric display may comprise a pair of seven-segment liquid crystal displays (LCDs) or light emitting diodes (LEDs.) The display includes a mount for attaching the display to an outer portion of a vehicle.
According to another feature of the invention, a heater is provided to electrically heat the vehicular mirror to defrost and/or defog the mirror and the display.
According to another aspect of the invention, a vehicular distance measuring system includes a distance measuring device having (i) a first sensor channel for detecting a distance to an object located in a first space and, in response, supplying a first sensor signal, and (ii) a processor responsive to the first sensor channel for supplying a first distance signal. A distance display system includes (i) a vehicular rear view mirror having an image reflecting surface and a first transparent window located in a portion of the image reflecting surface, and (ii) a first numeric display mounted on the vehicular rear view mirror. The numeric display is visible to a vehicle operator through the first transparent window and is responsive to the first distance signal for displaying the detected distance to the object to the operator.
The processor supplies an unblank display signal to the numeric display in response to detecting the object within a predetermined distance, the first numeric display being responsive to the unblank display signal for selectively blanking and displaying the detected distance. According to a feature of the invention, the distance display system includes a display illumination device responsive to the unblank display signal from the distance measuring means for illuminating the numeric display. The first numeric display may be selectively blanked in response to the unblank display signal in response to a detected distance greater than the predetermined distance while displaying a detected distance less than the predetermined distance.
According to another aspect of the invention, the vehicular distance measuring system includes a second channel to detect obstructions in a second area distinct from the first. In particular, the distance measuring device includes a second sensor channel for detecting a distance to an object located in a second space and, in response, supplies a second sensor signal. The processor is responsive to the second sensor channel for supplying a second distance signal to a second numeric display device mounted in the vehicle mirror. According to another aspect of the invention, a combination vehicular light and sensor housing includes a vehicular mountable shell with a light emitting element mounted in the shell for supplying visible light. A lamp socket and bracket are provided for mounting the light emitting element in the shell. A transducer is mounted in the shell spaced from the lamp socket for emitting and receiving a probe signal used to measure a distance. An optically translucent lens is mounted to the shell for transmitting the visible r light and the probe signal in a desired direction. Alternatively, the lens may include an aperture through which the probe signal is transmitted and echo signals are received. According to a feature of the invention, probe signal uses ultrasonic wave energy to detect and range an object. Further, the lens may be in the form of a clear or colored plastic cover substantially transparent to the ultrasonic wave energy and translucent to the visible light. The lens may include a series of concentric ridges forming a Freznel lens.
The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.
Brief Description of Drawings
Figure 1 is a side view of a vehicular distance measuring system according to the invention installed in a vehicle.
Figure 2 is a plan view of the vehicle of Figure 1 including the vehicular distance measuring system according to the invention.
Figure 3 is a view of major components forming the vehicular distance measuring system according to the invention.
Figure 4 is a front view of a mirror system according to the invention including a vehicle side view mirror and a pair of integral digital distance displays.
Figure 5 is a partial sectional view of the mirror system of Figure 4.
Figure 6 is a front view of an alternate mirror system according to the invention.
Figure 7A is a front view of an ultrasonic transducer.
Figure 7B is a sectional side view of the ultrasonic transducer of figure 7A.
Figure 7C is a rear view of the ultrasonic transducer of figure 7A.
Figure 7D is a sectional top view of the ultrasonic transducer of figure 7A. Figure 8 is a perspective view of a sonic transmitter/receiver unit.
Figure 9a is a partial front sectional view of a ultrasonic sensor enclosure.
Figure 9b is a sectional view of the enclosure of Figure 9a.
Figure 9c is another sectional view of the enclosure of Figure 9a.
Figure 10a is a front view of an ultrasonic sensor back panel. Figure 10b is a bottom sectional view of the back panel of Figure 10a.
Figure 11a is a front view of an ultrasonic mounting bracket.
Figure lib is a bottom view of the mounting bracket of Figure 11a.
Figure lie is a side view of the mounting bracket of Figure 11a.
Figure 12a is a front view of an ultrasonic sensor front panel. Figures 12b and 12c are sectional views of the front panel of Figure 11a.
Figure 13a is a front view of a vehicle taillight assembly with lens cover removed to show integral ultrasonic transducer installed. Figure 13b is a partial sectional view of the vehicle taillight assembly of figure 13a with lens cover installed.
Figure 14a is a rear view of a vehicle with the vehicle taillight assembly of figure 13a installed.
Figure 14b is a partial side view of the vehicle of figure 14a.
Figure 15a is a side view of a connection box according to the invention. Figure 15b is a view of another side of the connection box of Figure 15a.
Figure 15c is a front view of the connection box of Figures 15a and 15b.
Figure 16 is a schematic diagram of the controller and display electronics of the vehicular distance measuring system according to the invention.
Figure 17 is a schematic diagram of the ultrasonic transducer and ultrasonic receiver and transmitter circuitry according to the invention.
Best Mode for Carrying out the Invention
Referring to Figure 1, a vehicle 20 includes a combination of a tractor 22 and trailer 24. A plurality of transceivers 60 functioning as obstruction distance sensors are mounted on a rear bumper 26 of vehicle 20. The transmitters/receivers emit an ultrasonic acoustic energy wave having a frequency of 40 to 50 kiloHertz (kHz) rearward from the vehicle into a detection space immediately behind the vehicle. Mirror display system 40 includes a conventional reflective side view mirror with a digital display mounted thereon. The digital display is visible through a transparent window in the mirror for indicating distance to a detected obstruction. //
Each transceiver 60 emits ultrasonic acoustic energy in a conical pattern. A linear array 62 of transceivers 60 is mounted along bumper 26 as shown in Figure 2 to achieve a desired rearward obstruction detection space. The transceiver 60 is wired in parallel to simultaneously emit a pulse of ultrasonic acoustic energy and provide overlapping receive capability of a return ultrasonic echo signal.
Rear array 62 of transceivers 60 in combination with associated processing and control circuitry described below provides complete sensor coverage to detect and provide range information to obstructions located within ten feet of the rear of the vehicle. This information is provided to the vehicle operator by the digital display visible in mirror display system 40 for collision avoidance. For example, the vehicle operator can back vehicle 20 to a bay or dock while visually checking for obstructions in mirror display system 40 and simultaneously observing the distance to the bay or dock indicated by the digital display.
In addition to rear collision avoidance provided by rear sensor array 62, transceivers can be mounted along a side of the vehicle to provide augmented collision avoidance. Side facing sensor array 64 includes three transceivers 60 for detecting obstructions along the right side of vehicle 20. The array is oriented to detect vehicles in a space not readily visible to the vehicle operator and provides distance sensor information to a second channel of the processing and control circuitry for display on a second digital display of mirror display system 40.
The vehicular distance measuring system includes three major components as shown in Figure 3: mirror display system 40 with integral digital display, one or /*- more ultrasonic transceivers 60 and connection box 80. Referring to Figures 4 and 5, mirror display system 40 includes a reflective "West Coast Style" side view mirror 41, approximately seven inches wide by sixteen inches high with a deep drawn stainless steel back. Mirror element 42 is either first surface chrome or silvered glass sealed in a vinyl channel to prevent component damage and to absorb shock and road vibration. Mirror display system 40 includes one or two back lighted three digit LCD displays 44,46 visible through clear windows in the mirror element. The mirror may be heated to defog or deice the unit.
Connection box 80 supplies power to LCD display 44,46 and back-lights (not shown) and includes circuitry for operating transceiver 60 to detect and calculate a range of obstructions . The connection box includes a conventional microprocess or microcontroller for operating and receiving echo signals from the transceiver 60, calculating a range to a sensed object, comparing the calculated range with predetermined display activation maximum distance values and, in response, activating and supplying range data signals to respective displays 44 and 46.
Connection box 80 accommodates up to two channels of sensor inputs for sensor located on the rear and one side of the vehicle. Each channel controls one or more transceivers 60 for detecting obstructions behind or to one side of the vehicle. Multiple transceiver units provide inputs to a channel to increase lateral coverage of the system. As shown in Figure 2, multiple transceivers 60 are located along the rear and side of trailer 24 to insure full sensor coverage. The transceiver unit of both channels transmit in parallel to emit ultrasonic acoustic waves. Return ultrasonic echo signals are separately supplied by each group of sensors to the associated channel and separately processes and displayed on a respective LCD display 44, 46. Ultrasonic transducers constituting transceivers 60 are commercially available, for example, from the Polaroid Corporation. Each unit includes an ultrasonic transmitter for emitting an ultrasonic signal of about 50 kHz and a receiver for sensing a reflection of the emitted signal. The connection box 80 measures the time difference and calculates a distance to a sensed obstruction. If the sensed obstruction is calculated to be within a predetermined distance specified for that sensor channel, the respective LCD display and back light are activated and the distance to the obstruction is displayed.
Ultrasonic transceivers 60 are connected in series or are "daisey chained" by interconnect cables 66 to form a first channel of sensors mounted along the rear bumper of the vehicle in linear array 62. The first channel of sensors is connected by cable 68a to connection box 80 mounted in the cab of the vehicle tractor 22.
Connection box 80 includes a controller for driving transceivers 60 to emit an ultrasonic pulse, receiving a return ultrasonic echo, computing a distance to an obstruction reflecting the ultrasonic wave, and supplying a binary coded decimal (BCD) data signal indicating the computed distance. A second array of ultrasonic transceiver (not shown) forming a second sensor channel is connected to connection box 80 by cable 68b.
An alternative mirror display system 40a for horizontal mounting within a vehicle is depicted in '1
Figure 6. Multiple LCD displays 44a, 46a are located along opposite side of the mirror element 42a and are visible through transparent windows formed therein.
An ultrasonic transducer 72 is shown in figures 7A-7D. The unit is relatively small in size, measuring approximately 1*$ inches wide by 1 inch high by h inch deep. The transducer functions as a loudspeaker to emit a pulse of ultrasonic energy and as an electrostatic microphone to receive the reflected signal or "echo." The transducer may be mounted as shown in Figure 8 to provide a complete ultrasonic transceiver 60.
Referring to Figure 8, transceiver 60 includes housing 70 with ultrasonic transducer 72 mounted therein. Housing 70 is made of conventional sheet metal and includes a box shaped front cover 71 (Figures 9a-9c) having an open back and an opposite front. A large square central aperture in the front is covered with an acoustically transparent screen 76 to protect transducer 72 from foreign objects. Cover 71 engages a peripheral lip of square ultrasonic sensor back panel 72 (Figures 10a and 10b) and is secured to sensor back panel 72 using bolts inserted through holes 73 of cover 71 engaging corresponding threaded apertures 75 in the lip of back panel 72.
Sensor back panel 72 is secured to a vehicle by through-bolts 78. Alternatively, housing 70 may be attached to a vehicle using L-shaped ultrasonic mounting bracket 79 (Figures lla-llc) which engages and secures to sensor back panel 72 using through bolts 78.
Transducer 72 is centrally positioned within housing 70 by front panel 74. Referring to Figures
12a-12c, front panel 74 is formed in the shape of a square with a large central square recessed portion. A
An oval aperture is formed in the recess portion with a plurality of holes formed thereabout for securing a transceiver to the panel.
Because the ultrasonic transducer is relatively small, it may instead be incorporated into an existing vehicle structure with minimal modification. Light units such as taillight assemblies provide environmental protection for the transducer. The assemblies include an ultrasonic transparent plastic covering as shown in Figures 13a and 13b or an aperture through the plastic.
Taillight assembly 130 includes a metallic taillight shell 132 with a peripheral lip for mounting the assembly in an aperture formed in the body of a vehicle. A socket lamp 134 is mounted to shell 132 by a bracket. An incandescent lamp 136 is installed in lamp socket 134 and is supplied with electric power through insulated electric wire 138 to illuminate lamp 136. Transducer 72 is installed below lamp 136 and is supported directly behind lens cover 140 by a conventional bracket member (not shown.)
Lens 140 may be a multifaceted optically translucent plastic material for projecting light emitted from lamp 136. Alternatively, the lens may form a Freznel lens to further direct and concentrate light from lamp 136. The plastic may be optically clear, partially opaque or colored as is conventional for vehicle taillights and running lights. To minimize ultrasonic attenuation, a suitable plastic type and thickness is chosen. Alternatively, an aperture 142 through the plastic or a window area of a suitable ultrasonic transparent material, such as a fine screen material, may be provided in the lens to minimize attenuation of the transmitted and received signals. / (,
Referring to Figure 14a, vehicle 150 includes a taillight assembly 130 mounted in the rear portion 152 of the vehicle. Thus, the vehicular measuring system may be readily installed in a vehicle by either modifying or replacing an existing taillight to incorporate an ultrasonic transducer without requiring modifications to the structure of the vehicle. Including an ultrasonic transducer in a taillight assembly 130 or running light assembly 154 on a side of the vehicle further accommodates optimal placement of the transducers without removing or relocating existing vehicle lighting.
Referring to Figures 15a-15c, connection box 80 includes a first side face 82 including connectors 84 and 86 for connecting electronics contained within the connection box to first and second daisey chained channels of transceivers. An opposite side panel 88 includes a connector 90 accepting cable 82 for supplying signals to mirror display system 40. Connector 92 is used to supply d.c. power to the connection box which distributes power to the other systems as required. Finally, a front panel 94 includes a power fuse holder 96 and a display mode switch 98 for selecting digital display readings in either feet or meters.
The control electronics housed in connector box 80 and the display electronics of the mirror display system are shown in the schematic diagram of Figure 16. The controller and display electronics 100 of the vehicular distance measuring system includes a conventional microprocessor 102, binary-coded-decimal (BCD) to seven segment converters/drivers (display drivers) 110-116 and seven-segment liquid crystal displays (LCDs) 120. n
Microprocessor 102 includes an on-chip erasable programmable read only memory (EPROM) storing a set of operating instructions, random access memory (RAM) for temporary storage of operating data, a central processing unit for performing arithmetic and logic operations, and first and second parallel input/output (I/O) ports PA0-PA7 and PB0-PB5. First I/O port PA0- PA7 of microprocessor 102 includes I/O terminals PA0- PA3 supplying parallel MOS level BCD data signals to display drivers 110-116. The remaining I/O terminals PA7-PA4 of the first I/O port are connected to respective display enable terminals of display drivers 110-116. Output terminals A-G of display drivers 110- 116 are connected to respective segments of dual seven- segment LCD displays 120 and 122.
A first I/O terminal PB0 of the second output port is connected in parallel to light emitting diodes (LEDs) 144 through drivers 140 and 142. LEDs 144 are mounted in the mirror display system behind LCD displays 120 and 122 to illuminate the displays in response to detection of an obstruction within a predetermined threshold distance.
I/O terminal PB1 of the second output port provides a clock signal to display drivers 110-116 and LCD displays 120 and 122. The clock signal is used to synchronize data transfers from the first output port of microprocessor 102 to display drivers 110-116 and LCD displays 120 and 122.
I/O terminal PB2 provides a transmit control signal under program control to each of the transceivers through bipolar transistor Ql . I/O terminal PB3 receives a logic signal from display mode switch 98 through amplifier 136. Microprocessor 102 periodically reads the logic level at I/O terminal PB3 and scales a computed distance to a detected obstruction to selectively display the distance in either feet or meters. Finally, I/O terminals PB5 and PB4 receive respective echo signals ECH01 and ECH02 from first and second sensor channels .
Each sensor channel includes a comparator 130 receiving at an inverting input an echo signal from a respective ultrasonic transceivers in parallel comprising a sensor channel. A noise suppression capacitor is connected from the inverting input terminal of comparators 130 to ground. A non-inverting input of the comparator is connected to a reference voltage. If any of the transceivers detect an ultrasonic return echo signal, current is drawn through pull-up resistor 134 connected to the inverting input terminal causing the voltage level applied to the inverting terminal to decrease, i.e., go low with respect to the reference voltage. The output from comparator 130 is supplied to invertor 132 which reinverts the signal level and supplies a respective echo signal to input terminals PB5 and PB4.
Power to all components of electronics 100 is provided by voltage regulator 160. Nominal vehicle 12 volt power is supplied to voltage regulator 160 which supplied five volt MOS operating voltage to system components. Twelve volt direct current is supplied directly to electrical heater units of the mirror display units .
A schematic diagram of a transceiver including an ultrasonic transducer 200 and ultrasonic receiver and transmitter circuitry is depicted in Figure 17. The transmitter circuit includes transducer transmit controller 202 which receives a transmit control signal from controller and display electronics 100 and, in II response, provides an ultrasonic output signal of a predetermined duration to transducer 200 through output transistor 204 and output transformer 206.
Ultrasonic waves received by transducer 200 are converted to electrical signals and supplied to signal processor 212. Signal processor 212 is responsive to a frequency set by tuned circuit 214 to detect a return echo corresponding to the frequency of the transmitted signal. Upon detecting the predetermined frequency, signal processor 212 supplies a detector signal to an inverting input of comparator 216. The output of comparator 216 is provided in parallel with the output of other transmitters of the channel to controller and display electronics 100. In operation, microprocessor 102 periodically supplies a transmit control signal in parallel to ultrasonic transceivers of both channels and initiates a timer. In response to the transmit control signal, the transmitters of each transceiver generates an ultrasonic signal causing the respective transducers to emit ultrasonic acoustic wave energy toward areas of potential obstructions or hazards. The acoustic wave energy is bounced off of obstructions, creating an acoustic echo receivable by the transducer. In response to receiving an acoustic echo, the transducer provides a corresponding electrical signal to signal processor 212. The detector output from signal processor 212 is supplied to microprocessor 102 on a corresponding channel. Microprocessor 102 alternately receives signals from each of the channels and, using the timer, determines a round trip time required for the acoustic wave energy to travel to, and return from the obstruction. The microprocessor translates the time into a distance and compares the computed distance to a predetermined threshold distance value for that channel .
The system has an accuracy and display resolution of one-tenth of a foot over an operating range of 1.5 inches to over ten feet. Distances to objects over ten feet from the vehicle are suppressed in view of system range constraints and to avoid generating spurious warning indications to the operator.
If the computed distance is within a display range corresponding to the threshold distance, microprocessor 102 provides a display output signal indicating distance to the obstruction to the corresponding display channel in the selected units, i.e., feet or meters . If no obstruction to the corresponding display channel is detected within the threshold distance for either channel, both displays are blanked and the illumination therefor is extinguished.
Other features of the inventions include electric heating elements in the mirror display units to defrost, defog and deice the mirrors and to maintain a satisfactory operational environment for the LCD displays . Another feature of the invention includes pellicle mirror portions forming half silvered display windows in the mirror whereby the LCD displays are only visible when back lighted. Blanked displays, being darker than the ambient light level, would not be visible so that the vehicle operator would not be distracted by the display and the full surface area of the mirror unit would constitute usable image area . In summary, the invention provides an obstruction detection and ranging system including a mirror display unit providing conventional rear view vision to a driver in combination with an integrated digital display. The digital display is viewable through an at optical window in the mirror whereby the operator does not redirect his or her vision away from the mirror to observe the display. Because the display is blanked when no object is detected within a predetermined distance from the vehicle, the operator is not distracted by spurious indications on the display.
While there have been described and illustrated several specific embodiments of the invention, it will be clear that variations in the details of the embodiments specifically illustrated and described may be made without departing from the true spirit and scope of the invention as defined in the appended claims.
For example, although the mirror display system is described using LCDs. light emitting diode displays may be substituted thereby eliminating the need for separate backlighting LEDs. Further, although the system is described including two channels of sensors, fewer or greater number of channels may be incorporated to provide a desired hazard warning detection zone. Still further, although ultrasonic ranging is described, other ranging systems may be used including radio detection and ranging (radar), infrared and radio transponder systems. Although the present invention has been described and illustrated in detail, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, the spirit and scope of the present invention being limited only by the terms of the appended claims.

Claims

A3-Claims
1. A vehicular distance measuring system, comprising: distance measuring means for detecting a distance to an object and, in response, supplying a distance signal; and display means including
(i) a vehicular mirror having an image reflecting surface with a window portion located therein, and
(ii) a digital display mounted on said vehicular mirror and viewable through said window portion, said digital display responsive to said distance signal for displaying the detected distance to the object.
2. The vehicular distance measuring system according to claim 1, further comprising a combination vehicular light and sensor housing including:
(i) a shell; (ϋ) light emitting means mounted in said shell for supplying visible light;
(iii) a transducer mounted in said shell for emitting and receiving a probe signal for measuring said distance to said object; and (iv) a lens mounted to said shell for transmitting said visible light.
3. The vehicular distance measuring system according to claim 2 wherein said lens includes an aperture aligned with said transducer.
4. The vehicular distance measuring system according to claim 1, said distance measuring means including means for comparing the distance to the object with a predetermined threshold distance and, in response, supplying a display unblank signal, said digital display responsive to said display unblank signal for selectively (i) blanking the digital display and (ii) displaying the detected distance to the object.
5. The vehicular distance measuring system according to claim 4 , said display means further comprising illumination means responsive to said display unblank signal for illuminating said digital.
6. The vehicular distance measuring system according to claim 1, wherein said distance measuring means includes: an ultrasonic transceiver responsive to a transmit signal for emitting an ultrasonic wave and for receiving a reflected ultrasonic wave and, in response, supplying a received signal; timing means for measuring a time period between the emission of the ultrasonic wave by said ultrasonic transmitter and reception of said reflected ultrasonic wave by said ultrasonic transceiver; and distance conversion means responsive to said measured time period for supplying said distance signal.
7. The vehicular distance measuring system according to claim 6, further comprising a combination vehicular light and sensor housing including:
(i) a shell; (ϋ) light emitting means mounted in said shell for supplying visible light;
( iii ) means f or mounting s aid u l tra s oni c transceiver in said shell ; and
(iv) a lens mounted to said shell for transmitting said visible light.
8. The vehicular distance measuring system according to claim 6, said digital display including binary-coded-decimal (BCD) decoding means receiving said distance signal and, in response, supplying a display driver signal, and a numeric display responsive to said display driver signal for displaying said detected distance to the object.
9. The vehicular distance measuring system according to claim 8, wherein said numeric display comprises a pair of liquid crystal displays (LCDs.)
10. The vehicular distance measuring system according to claim 8, wherein said numeric display comprises a pair of light emitting diode displays (LEDs. )
11. The vehicular distance measuring system according to claim 1, wherein said display means includes mounting means attaching said display means to an outer portion of a vehicle.
12. The vehicular distance measuring system according to claim 1, further comprising heater means for electrically heating said vehicular mirror.
13. The vehicular distance measuring system according to claim 1, wherein said window comprises a X pellicular mirror .
14 . The vehicular distance measuring system according to c laim 1 , wherein said window is transparent .
15 . A vehi cular distance measuring system , comprising : distance measuring means including (i) a first sensor channel for detecting a distance to an object located in a first space and, in response, supplying a first sensor signal, and
(ii) processor means response to said first sensor channel for supplying a first distance signal; and a distance display system including
(i) a vehicular rear view mirror having an image reflecting surface and a first window located in a portion of said image reflecting surface, and (ii) a first numeric display mounted on said vehicular rear view mirror, said numeric display visible through said first transparent window and responsive to said first distance signal for displaying the detected distance to the object.
16. The vehicular distance measuring system according to claim 15, wherein said processor means supplies an unblank display signal to said numeric display in response to detecting the object within a predetermined distance, said first numeric display responsive to said unblank display signal for selectively blanking and displaying said detected distance.
17. The vehicular distance measuring system according to claim 16, said distance display system further comprising display illumination means responsive to said unblank display signal from said distance measuring means for illuminating said numeric display.
18. The vehicular distance measuring system according to claim 16, wherein said first numeric display is selectively blanked in response to said unblank display signal with a detected distance greater than said predetermined distance and displays the detected distance less than said predetermined distance.
19. The vehicular distance measuring system according to claim 15, said distance display system further comprising display illumination means responsive to a signal from said processor means for illuminating said numeric display.
20. The vehicular distance measuring system according to claim 15, said distance measuring means including a second sensor channel for detecting a distance to an object located in a second space and, in response, supplying a second sensor signal, said processor means response to said second sensor channel for supplying a second distance signal; said vehicular rear view mirror having a second window located in a portion of said image reflecting surface spaced from said first window, and a second numeric display mounted on said vehicular rear view mirror, said numeric display visible through said A? second transparent window and responsive to said second distance signal for displaying the second detected distance.
21. The vehicular distance measuring system according to claim 20, said distance measuring means including display blanking means for selectively blanking said first and second numeric displays in response to no object being detected by said respective first and second sensor channels within predetermined threshold distances.
22. The vehicular distance measuring system according to claim 21, further comprising display illumination means for selectively illuminating said first and second numeric displays in response to said first and second sensor channels respectively detecting an object within said predetermined threshold distances.
23. The vehicular distance measuring system according to claim 15, said first sensor channel comprising: an ultrasonic transmitter responsive to a transmit signal for emitting an ultrasonic wave; an ultrasonic receiver for receiving a reflected ultrasonic wave and, in response, supplying a received signal; timing means for measuring a time period between the emission of the ultrasonic wave by said ultrasonic transmitter and reception of said reflected ultrasonic wave by said ultrasonic receiver; and distance conversion means responsive to said measured time period for supplying said distance A signal
24. The vehicular distance measuring system according to claim 15, wherein said first window comprises a pellicular mirror.
25. The vehicular distance measuring system according to claim 15, wherein said first window is transparent.
26. A vehicular distance measuring system mounted in a vehicle for detecting a distance to an object, comprising: control means for supplying a transmit signal and, responsive to a received echo signal, supplying a distance signal; ultrasonic transducer means mounted on an outer surface of said vehicle and responsive to said transmit signal for emitting an ultrasonic wave and for receiving a reflected ultrasonic wave and, in response, supplying said received echo signal; a side view mirror mounted outside of said vehicle for observing an object at a rear of the vehicle, said side view mirror including a reflective surface; and a numeric display mounted on said side view mirror and observable through a window in said reflective surface, said numeric display responsive to said distance signal for displaying numeric distance data.
27. The vehicular distance measuring system according to claim 26, said control means including display blanking means responsive to said received echo signal for blanking said numeric display whereby display of numeric data by said numeric display is suppres sed respons ive to no object being detected within a predetermined threshold distance from the vehicle .
28 . A vehi cu lar light and s ensor housing assembly, comprising : a vehicular mountable shell; light emitting means mounted in said shell for supplying visible light; a transducer mounted in said shell for emitting and receiving a probe signal for measuring a distance; and a lens mounted to said shell for transmitting said visible light and said probe signal.
29. The vehicular light and sensor housing assembly according to claim 28 wherein said probe signal comprises ultrasonic wave energy.
30. The vehicular light and sensor housing assembly according to claim 28, further comprising means for sealing said lens to said shell to prevent entry of contaminants into said housing.
31. The vehicular light and sensor housing assembly according to claim 28 wherein said transducer includes means to transmitting and receiving ultrasonic wave energy.
32. The vehicular light and sensor housing assembly according to claim 31 wherein said lens includes an aperture aligned with said transducer.
33. The vehicular light and sensor housing ϊ assembly according to claim 31 wherein said lens comprises a plastic cover translucent to said visible light with a window portion substantially transparent to said ultrasonic wave energy.
34. The vehicular light and sensor housing assembly according to claim 28, further including means for mounting said shell to an exterior of a motor vehicle.
35. The vehicular light and sensor housing assembly according to claim 28 wherein said light emitting means comprises and incandescent lamp and means for supplying electric power to said incandescent lamp.
PCT/US1993/006345 1992-07-02 1993-07-02 Vehicular distance measuring system with integral mirror display WO1994001787A1 (en)

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US07/908,267 US5303205A (en) 1990-02-26 1992-07-02 Vehicular distance measuring system with integral mirror display
US908,267 1992-07-02

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2292857B (en) * 1994-08-29 1999-09-22 Motorola Inc Radio frequency communication device including a mirrored surface
EP1396381A1 (en) * 2002-09-06 2004-03-10 Stefan Dipl.-Wirtsch.-Ing. Voit Electronic distance warning system
CN104678401A (en) * 2013-11-29 2015-06-03 青岛永通电梯工程有限公司 Intelligent distance measuring method

Families Citing this family (255)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5469497A (en) * 1993-01-19 1995-11-21 Teledebit Networked interactive call management subsystems with prevention of simultaneous use of a single account number
US5877897A (en) 1993-02-26 1999-03-02 Donnelly Corporation Automatic rearview mirror, vehicle lighting control and vehicle interior monitoring system using a photosensor array
US6822563B2 (en) 1997-09-22 2004-11-23 Donnelly Corporation Vehicle imaging system with accessory control
US5910854A (en) 1993-02-26 1999-06-08 Donnelly Corporation Electrochromic polymeric solid films, manufacturing electrochromic devices using such solid films, and processes for making such solid films and devices
US5670935A (en) * 1993-02-26 1997-09-23 Donnelly Corporation Rearview vision system for vehicle including panoramic view
US5668663A (en) 1994-05-05 1997-09-16 Donnelly Corporation Electrochromic mirrors and devices
US5734336A (en) * 1995-05-01 1998-03-31 Collision Avoidance Systems, Inc. Collision avoidance system
US6891563B2 (en) 1996-05-22 2005-05-10 Donnelly Corporation Vehicular vision system
US5940120A (en) * 1995-10-20 1999-08-17 Prince Corporation Vanity console
US7655894B2 (en) 1996-03-25 2010-02-02 Donnelly Corporation Vehicular image sensing system
US6400835B1 (en) * 1996-05-15 2002-06-04 Jerome H. Lemelson Taillight mounted vehicle security system employing facial recognition using a reflected image
AUPO073796A0 (en) * 1996-06-27 1996-07-25 Duskedge Pty Ltd A collision avoidance system
US5984496A (en) * 1996-11-07 1999-11-16 Malcomson; Kirk Lighted mirror assembly
US5940012A (en) * 1997-05-09 1999-08-17 Collision Avoidance Systems, Inc. Collision avoidance system and method for operating the same
US6106121A (en) * 1997-07-10 2000-08-22 Chrysler Corporation Rear view mirror with integrated matrix display
US6326613B1 (en) 1998-01-07 2001-12-04 Donnelly Corporation Vehicle interior mirror assembly adapted for containing a rain sensor
US6124886A (en) 1997-08-25 2000-09-26 Donnelly Corporation Modular rearview mirror assembly
US6172613B1 (en) 1998-02-18 2001-01-09 Donnelly Corporation Rearview mirror assembly incorporating vehicle information display
US8294975B2 (en) 1997-08-25 2012-10-23 Donnelly Corporation Automotive rearview mirror assembly
US8288711B2 (en) 1998-01-07 2012-10-16 Donnelly Corporation Interior rearview mirror system with forwardly-viewing camera and a control
US6124647A (en) * 1998-12-16 2000-09-26 Donnelly Corporation Information display in a rearview mirror
US6278377B1 (en) 1999-08-25 2001-08-21 Donnelly Corporation Indicator for vehicle accessory
US6445287B1 (en) 2000-02-28 2002-09-03 Donnelly Corporation Tire inflation assistance monitoring system
US6405112B1 (en) 1998-02-09 2002-06-11 Gary A. Rayner Vehicle operator performance monitor with enhanced data retrieval capabilities
US6477464B2 (en) 2000-03-09 2002-11-05 Donnelly Corporation Complete mirror-based global-positioning system (GPS) navigation solution
US6420975B1 (en) 1999-08-25 2002-07-16 Donnelly Corporation Interior rearview mirror sound processing system
US6329925B1 (en) 1999-11-24 2001-12-11 Donnelly Corporation Rearview mirror assembly with added feature modular display
US6693517B2 (en) 2000-04-21 2004-02-17 Donnelly Corporation Vehicle mirror assembly communicating wirelessly with vehicle accessories and occupants
US6553308B1 (en) 1999-04-29 2003-04-22 Donnelly Corporation Vehicle-based navigation system with smart map filtering, portable unit home-base registration and multiple navigation system preferential use
US6693524B1 (en) 1998-06-02 2004-02-17 George R. Payne Vehicle backup monitoring and alarm system
US6268803B1 (en) * 1998-08-06 2001-07-31 Altra Technologies Incorporated System and method of avoiding collisions
US6175300B1 (en) * 1998-09-03 2001-01-16 Byron K. Kendrick Blind spot viewing system
US6304173B2 (en) * 1999-01-29 2001-10-16 Lear Automotive Dearborn Inc Rear view and multi-media system for vehicles
US6184781B1 (en) * 1999-02-02 2001-02-06 Intel Corporation Rear looking vision system
JP4287532B2 (en) * 1999-03-01 2009-07-01 矢崎総業株式会社 Vehicle rear side monitoring device
DE19911648A1 (en) * 1999-03-16 2000-09-21 Volkswagen Ag Procedure for displaying objects
US6690413B1 (en) * 1999-04-21 2004-02-10 Michael S. Moore Tractor-trailer viewing system
JP2000339589A (en) * 1999-05-25 2000-12-08 Fujitsu Ltd Traffic safety auxiliary system for vehicle and recording medium
US6668327B1 (en) 1999-06-14 2003-12-23 Sun Microsystems, Inc. Distributed authentication mechanisms for handling diverse authentication systems in an enterprise computer system
US8066415B2 (en) 1999-06-17 2011-11-29 Magna Mirrors Of America, Inc. Exterior mirror vision system for a vehicle
US7366595B1 (en) * 1999-06-25 2008-04-29 Seiko Epson Corporation Vehicle drive assist system
EP1083076A3 (en) * 1999-09-07 2005-01-12 Mazda Motor Corporation Display apparatus for vehicle
US6917693B1 (en) * 1999-12-20 2005-07-12 Ford Global Technologies, Llc Vehicle data acquisition and display assembly
DE10109680B4 (en) * 2000-02-29 2009-02-26 Aisin Seiki K.K., Kariya Parking assist device and parking assistance method for a vehicle
WO2007053710A2 (en) 2005-11-01 2007-05-10 Donnelly Corporation Interior rearview mirror with display
EP1263626A2 (en) 2000-03-02 2002-12-11 Donnelly Corporation Video mirror systems incorporating an accessory module
US7167796B2 (en) 2000-03-09 2007-01-23 Donnelly Corporation Vehicle navigation system for use with a telematics system
US7370983B2 (en) 2000-03-02 2008-05-13 Donnelly Corporation Interior mirror assembly with display
US7480149B2 (en) 2004-08-18 2009-01-20 Donnelly Corporation Accessory module for vehicle
EP1129904B1 (en) * 2000-03-02 2006-08-09 Autonetworks Technologies, Ltd. Monitoring device of blind zones around vehicles
DE10012525A1 (en) * 2000-03-15 2001-09-20 Still Gmbh Fork lift truck has rear view cameras for monitoring different ranges coupled to monitor screen positioned in line of sight of driver
US6396408B2 (en) 2000-03-31 2002-05-28 Donnelly Corporation Digital electrochromic circuit with a vehicle network
US6583730B2 (en) * 2000-07-28 2003-06-24 Lang-Mekra North America, Llc Surveillance apparatus for a vehicle
US6497491B2 (en) 2000-08-03 2002-12-24 Magna Mirror Systems Inc. Extendable mirror
US20020075138A1 (en) * 2000-08-16 2002-06-20 Van Rees H. Barteld Portable object detection system
DE10052751A1 (en) * 2000-10-25 2002-05-08 Mannesmann Vdo Ag Rear-view mirror for a vehicle with a reflective surface
JP2002200936A (en) 2000-11-06 2002-07-16 Semiconductor Energy Lab Co Ltd Display device and vehicle
US7581859B2 (en) 2005-09-14 2009-09-01 Donnelly Corp. Display device for exterior rearview mirror
ATE363413T1 (en) 2001-01-23 2007-06-15 Donnelly Corp IMPROVED VEHICLE LIGHTING SYSTEM
US7255451B2 (en) 2002-09-20 2007-08-14 Donnelly Corporation Electro-optic mirror cell
US20020113873A1 (en) * 2001-02-20 2002-08-22 Williams Michael R. Rear vision system for large vehicles
ES2177469B1 (en) * 2001-05-16 2003-12-16 Fico Mirrors Sa DEVICE FOR DETECTION OF PRESENCE OF OBJECTS IN A DEAD ANGLE OF A MOTOR VEHICLE.
US6693519B2 (en) 2001-05-31 2004-02-17 V-Tech-Usa, Llc Vehicle safety monitoring system for viewing blind spots
US6491417B1 (en) * 2001-06-13 2002-12-10 Bendix Commercial Vehicle Systems Llc Night vision clearance light
US6882287B2 (en) 2001-07-31 2005-04-19 Donnelly Corporation Automotive lane change aid
US7697027B2 (en) 2001-07-31 2010-04-13 Donnelly Corporation Vehicular video system
KR100866450B1 (en) * 2001-10-15 2008-10-31 파나소닉 주식회사 Automobile surrounding observation device and method for adjusting the same
US6636258B2 (en) 2001-10-19 2003-10-21 Ford Global Technologies, Llc 360° vision system for a vehicle
US6737964B2 (en) * 2001-11-05 2004-05-18 Ford Global Technologies, Llc Vehicle blind spot monitoring system
US7006129B1 (en) 2001-12-12 2006-02-28 Mcclure Daniel R Rear-view display system for vehicle with obstructed rear view
US6824281B2 (en) 2002-01-31 2004-11-30 Donnelly Corporation Vehicle accessory module
EP1332923B1 (en) * 2002-02-05 2007-07-11 Donnelly Hohe GmbH & Co. KG Manoeuvring and/or parking aid device for a vehicle
US7123168B2 (en) * 2002-04-25 2006-10-17 Donnelly Corporation Driving separation distance indicator
ES2391556T3 (en) 2002-05-03 2012-11-27 Donnelly Corporation Object detection system for vehicles
US6918674B2 (en) 2002-05-03 2005-07-19 Donnelly Corporation Vehicle rearview mirror system
US7329013B2 (en) 2002-06-06 2008-02-12 Donnelly Corporation Interior rearview mirror system with compass
WO2003105099A1 (en) 2002-06-06 2003-12-18 Donnelly Corporation Interior rearview mirror system with compass
US20060061008A1 (en) 2004-09-14 2006-03-23 Lee Karner Mounting assembly for vehicle interior mirror
US20030227546A1 (en) * 2002-06-06 2003-12-11 Hilborn Thomas W. Viewing arrangement
US20020189881A1 (en) * 2002-06-27 2002-12-19 Larry Mathias System and method for enhancing vision in a vehicle
US10144353B2 (en) 2002-08-21 2018-12-04 Magna Electronics Inc. Multi-camera vision system for a vehicle
AU2003278863A1 (en) 2002-09-20 2004-04-08 Donnelly Corporation Mirror reflective element assembly
US7310177B2 (en) 2002-09-20 2007-12-18 Donnelly Corporation Electro-optic reflective element assembly
WO2004103772A2 (en) 2003-05-19 2004-12-02 Donnelly Corporation Mirror assembly for vehicle
ITTO20020894A1 (en) * 2002-10-15 2004-04-16 Fiat Ricerche SYSTEM TO AVOID THE COLLISION OF A VEHICLE WITH ANIMALS
US7602413B2 (en) * 2002-10-18 2009-10-13 Sony Corporation Information processing system and method, information processing apparatus, image-capturing device and method, recording medium, and program
US6783187B2 (en) * 2002-10-29 2004-08-31 Michael S. Parsons Vector neutral truck
US7292208B1 (en) 2002-12-04 2007-11-06 Savv Corporation Rearview video output device
US6834906B2 (en) * 2002-12-30 2004-12-28 Valeo Electrical Systems, Inc. Vehicle liftgate with component module applique
JP2006526300A (en) * 2003-05-22 2006-11-16 フィコ ミロールス，エセ ア External environment monitoring camera system applicable to vehicle rear view mirrors
US6916110B2 (en) * 2003-05-29 2005-07-12 Rene C. Batiste Flame simulating devices for use with lights and method thereof
US7142098B2 (en) * 2003-09-05 2006-11-28 Lang-Mekra North America, Llc Wireless data transfer system for a tractor-trailer
US7446924B2 (en) 2003-10-02 2008-11-04 Donnelly Corporation Mirror reflective element assembly including electronic component
US7308341B2 (en) 2003-10-14 2007-12-11 Donnelly Corporation Vehicle communication system
JP2005124010A (en) * 2003-10-20 2005-05-12 Nissan Motor Co Ltd Imaging apparatus
US20050128294A1 (en) * 2003-12-10 2005-06-16 Trailer Technology. Rear viewing device and method
DE10358857A1 (en) * 2003-12-16 2005-07-21 Robert Bosch Gmbh Distance measuring device for control
US7526103B2 (en) 2004-04-15 2009-04-28 Donnelly Corporation Imaging system for vehicle
FR2870600B1 (en) * 2004-05-24 2006-09-29 Shih Hsiung Li VEHICULAR MONITORING SYSTEM WITH MULTIFENER DISPLAY
US7881496B2 (en) 2004-09-30 2011-02-01 Donnelly Corporation Vision system for vehicle
EP1827908B1 (en) 2004-12-15 2015-04-29 Magna Electronics Inc. An accessory module system for a vehicle window
US7720580B2 (en) 2004-12-23 2010-05-18 Donnelly Corporation Object detection system for vehicle
US7230523B2 (en) * 2005-01-07 2007-06-12 Delphi Technologies, Inc. Vehicular rear view mirror/video display
DE102005015463B4 (en) * 2005-04-04 2007-02-15 Magna Donnelly Gmbh & Co. Kg Vehicle with distance control system
ATE517368T1 (en) 2005-05-16 2011-08-15 Donnelly Corp VEHICLE MIRROR ARRANGEMENT WITH CHARACTER ON THE REFLECTIVE PART
US7496439B2 (en) * 2005-10-17 2009-02-24 Lang Mekra North America, Llc Multifunction exterior display for a vehicle mirror
US10878646B2 (en) 2005-12-08 2020-12-29 Smartdrive Systems, Inc. Vehicle event recorder systems
US20070150138A1 (en) 2005-12-08 2007-06-28 James Plante Memory management in event recording systems
US8194132B2 (en) 2006-01-20 2012-06-05 Old World Industries, Llc System for monitoring an area adjacent a vehicle
EP2378350B1 (en) 2006-03-09 2013-12-11 Gentex Corporation Vehicle rearview assembly including a high intensity display
US9201842B2 (en) 2006-03-16 2015-12-01 Smartdrive Systems, Inc. Vehicle event recorder systems and networks having integrated cellular wireless communications systems
US8996240B2 (en) 2006-03-16 2015-03-31 Smartdrive Systems, Inc. Vehicle event recorders with integrated web server
US7511607B2 (en) * 2006-03-28 2009-03-31 D. Larry Hubbard Vehicle back-up viewing system
WO2008024639A2 (en) 2006-08-11 2008-02-28 Donnelly Corporation Automatic headlamp control system
EP1916155A1 (en) * 2006-10-23 2008-04-30 MEKRA Lang GmbH & Co. KG Multifunction display for a vehicle rearview mirror
US8602573B2 (en) * 2006-10-31 2013-12-10 Velvac Incorporated Electronics module for mirrors
US8649933B2 (en) 2006-11-07 2014-02-11 Smartdrive Systems Inc. Power management systems for automotive video event recorders
US8989959B2 (en) 2006-11-07 2015-03-24 Smartdrive Systems, Inc. Vehicle operator performance history recording, scoring and reporting systems
US8868288B2 (en) 2006-11-09 2014-10-21 Smartdrive Systems, Inc. Vehicle exception event management systems
US8013780B2 (en) 2007-01-25 2011-09-06 Magna Electronics Inc. Radar sensing system for vehicle
US8239092B2 (en) 2007-05-08 2012-08-07 Smartdrive Systems Inc. Distributed vehicle event recorder systems having a portable memory data transfer system
US7914187B2 (en) 2007-07-12 2011-03-29 Magna Electronics Inc. Automatic lighting system with adaptive alignment function
US8017898B2 (en) 2007-08-17 2011-09-13 Magna Electronics Inc. Vehicular imaging system in an automatic headlamp control system
US8451107B2 (en) 2007-09-11 2013-05-28 Magna Electronics, Inc. Imaging system for vehicle
US8446470B2 (en) 2007-10-04 2013-05-21 Magna Electronics, Inc. Combined RGB and IR imaging sensor
US7984574B2 (en) * 2008-03-11 2011-07-26 Deere & Company Construction vehicle with rear object detection
US8154418B2 (en) 2008-03-31 2012-04-10 Magna Mirrors Of America, Inc. Interior rearview mirror system
US20100020170A1 (en) 2008-07-24 2010-01-28 Higgins-Luthman Michael J Vehicle Imaging System
US8582052B2 (en) * 2008-08-22 2013-11-12 Gentex Corporation Discrete LED backlight control for a reduced power LCD display system
US9487144B2 (en) 2008-10-16 2016-11-08 Magna Mirrors Of America, Inc. Interior mirror assembly with display
WO2010099416A1 (en) 2009-02-27 2010-09-02 Magna Electronics Alert system for vehicle
US8376595B2 (en) 2009-05-15 2013-02-19 Magna Electronics, Inc. Automatic headlamp control
CN102481874B (en) 2009-07-27 2015-08-05 马格纳电子系统公司 Parking assistance system
US9495876B2 (en) 2009-07-27 2016-11-15 Magna Electronics Inc. Vehicular camera with on-board microcontroller
KR101043450B1 (en) * 2009-07-31 2011-06-21 삼성전기주식회사 Location and distance mesuring appratus its method usnig camera
US9041806B2 (en) 2009-09-01 2015-05-26 Magna Electronics Inc. Imaging and display system for vehicle
JP4985745B2 (en) * 2009-10-30 2012-07-25 株式会社デンソー Perimeter monitoring system for moving objects
CN102073040B (en) * 2009-11-20 2014-02-12 建兴电子科技股份有限公司 Control method of ultrasonic wave sensor
CN101776986B (en) * 2010-02-03 2011-12-14 青岛海信移动通信技术股份有限公司 Display control method of outstanding message in program startup and mobile terminal
US8890955B2 (en) 2010-02-10 2014-11-18 Magna Mirrors Of America, Inc. Adaptable wireless vehicle vision system based on wireless communication error
US9117123B2 (en) 2010-07-05 2015-08-25 Magna Electronics Inc. Vehicular rear view camera display system with lifecheck function
US9180908B2 (en) 2010-11-19 2015-11-10 Magna Electronics Inc. Lane keeping system and lane centering system
US9900522B2 (en) 2010-12-01 2018-02-20 Magna Electronics Inc. System and method of establishing a multi-camera image using pixel remapping
US9264672B2 (en) 2010-12-22 2016-02-16 Magna Mirrors Of America, Inc. Vision display system for vehicle
WO2012103193A1 (en) 2011-01-26 2012-08-02 Magna Electronics Inc. Rear vision system with trailer angle detection
US9194943B2 (en) 2011-04-12 2015-11-24 Magna Electronics Inc. Step filter for estimating distance in a time-of-flight ranging system
WO2012145819A1 (en) 2011-04-25 2012-11-01 Magna International Inc. Image processing method for detecting objects using relative motion
US10019841B2 (en) 2011-05-18 2018-07-10 Magna Electronics Inc. Driver assistance systems for vehicle
WO2013016409A1 (en) 2011-07-26 2013-01-31 Magna Electronics Inc. Vision system for vehicle
DE112012003931T5 (en) 2011-09-21 2014-07-10 Magna Electronics, Inc. Image processing system for a motor vehicle with image data transmission and power supply via a coaxial cable
WO2013048994A1 (en) 2011-09-26 2013-04-04 Magna Electronics, Inc. Vehicle camera image quality improvement in poor visibility conditions by contrast amplification
US9146898B2 (en) 2011-10-27 2015-09-29 Magna Electronics Inc. Driver assist system with algorithm switching
WO2013081985A1 (en) 2011-11-28 2013-06-06 Magna Electronics, Inc. Vision system for vehicle
US10457209B2 (en) 2012-02-22 2019-10-29 Magna Electronics Inc. Vehicle vision system with multi-paned view
WO2013126715A2 (en) 2012-02-22 2013-08-29 Magna Electronics, Inc. Vehicle camera system with image manipulation
US8694224B2 (en) 2012-03-01 2014-04-08 Magna Electronics Inc. Vehicle yaw rate correction
DE102012004639A1 (en) * 2012-03-07 2013-09-12 Audi Ag Motor vehicle with an electronic rearview mirror
US9760092B2 (en) * 2012-03-16 2017-09-12 Waymo Llc Actively modifying a field of view of an autonomous vehicle in view of constraints
US10609335B2 (en) 2012-03-23 2020-03-31 Magna Electronics Inc. Vehicle vision system with accelerated object confirmation
US9751465B2 (en) 2012-04-16 2017-09-05 Magna Electronics Inc. Vehicle vision system with reduced image color data processing by use of dithering
US8879139B2 (en) 2012-04-24 2014-11-04 Gentex Corporation Display mirror assembly
US10089537B2 (en) 2012-05-18 2018-10-02 Magna Electronics Inc. Vehicle vision system with front and rear camera integration
US9728228B2 (en) 2012-08-10 2017-08-08 Smartdrive Systems, Inc. Vehicle event playback apparatus and methods
US9340227B2 (en) 2012-08-14 2016-05-17 Magna Electronics Inc. Vehicle lane keep assist system
DE102013217430A1 (en) 2012-09-04 2014-03-06 Magna Electronics, Inc. Driver assistance system for a motor vehicle
US9446713B2 (en) 2012-09-26 2016-09-20 Magna Electronics Inc. Trailer angle detection system
US9558409B2 (en) 2012-09-26 2017-01-31 Magna Electronics Inc. Vehicle vision system with trailer angle detection
US9090234B2 (en) 2012-11-19 2015-07-28 Magna Electronics Inc. Braking control system for vehicle
US9743002B2 (en) 2012-11-19 2017-08-22 Magna Electronics Inc. Vehicle vision system with enhanced display functions
US10025994B2 (en) 2012-12-04 2018-07-17 Magna Electronics Inc. Vehicle vision system utilizing corner detection
US9481301B2 (en) 2012-12-05 2016-11-01 Magna Electronics Inc. Vehicle vision system utilizing camera synchronization
DE102012222668A1 (en) * 2012-12-10 2014-06-12 Robert Bosch Gmbh Vehicle surroundings monitoring device
US9092986B2 (en) 2013-02-04 2015-07-28 Magna Electronics Inc. Vehicular vision system
US20140218529A1 (en) 2013-02-04 2014-08-07 Magna Electronics Inc. Vehicle data recording system
US20140232851A1 (en) * 2013-02-20 2014-08-21 United States Of America, As Represented By The Secretary Of The Army M-ATV Driver's Vision Augmentation System
US9598018B2 (en) 2013-03-15 2017-03-21 Gentex Corporation Display mirror assembly
US10027930B2 (en) 2013-03-29 2018-07-17 Magna Electronics Inc. Spectral filtering for vehicular driver assistance systems
US9327693B2 (en) 2013-04-10 2016-05-03 Magna Electronics Inc. Rear collision avoidance system for vehicle
US10232797B2 (en) 2013-04-29 2019-03-19 Magna Electronics Inc. Rear vision system for vehicle with dual purpose signal lines
US9508014B2 (en) 2013-05-06 2016-11-29 Magna Electronics Inc. Vehicular multi-camera vision system
US10567705B2 (en) 2013-06-10 2020-02-18 Magna Electronics Inc. Coaxial cable with bidirectional data transmission
US9260095B2 (en) 2013-06-19 2016-02-16 Magna Electronics Inc. Vehicle vision system with collision mitigation
US20140375476A1 (en) 2013-06-24 2014-12-25 Magna Electronics Inc. Vehicle alert system
US10755110B2 (en) 2013-06-28 2020-08-25 Magna Electronics Inc. Trailering assist system for vehicle
US20150042797A1 (en) * 2013-08-06 2015-02-12 GM Global Technology Operations LLC Motor vehicle rear side view display system
US10326969B2 (en) 2013-08-12 2019-06-18 Magna Electronics Inc. Vehicle vision system with reduction of temporal noise in images
AU2014326772B2 (en) 2013-09-24 2017-07-20 Gentex Corporation Display mirror assembly
US9501878B2 (en) 2013-10-16 2016-11-22 Smartdrive Systems, Inc. Vehicle event playback apparatus and methods
US9610955B2 (en) 2013-11-11 2017-04-04 Smartdrive Systems, Inc. Vehicle fuel consumption monitor and feedback systems
US9499139B2 (en) 2013-12-05 2016-11-22 Magna Electronics Inc. Vehicle monitoring system
US9988047B2 (en) 2013-12-12 2018-06-05 Magna Electronics Inc. Vehicle control system with traffic driving control
DE102013022063A1 (en) * 2013-12-23 2015-06-25 Valeo Schalter Und Sensoren Gmbh Method for producing an ultrasonic sensor for a motor vehicle
US9511715B2 (en) 2014-01-31 2016-12-06 Gentex Corporation Backlighting assembly for display for reducing cross-hatching
US10160382B2 (en) 2014-02-04 2018-12-25 Magna Electronics Inc. Trailer backup assist system
US8892310B1 (en) 2014-02-21 2014-11-18 Smartdrive Systems, Inc. System and method to detect execution of driving maneuvers
WO2015143333A1 (en) 2014-03-21 2015-09-24 Gentex Corporation Tri-modal display mirror assembly
KR101894262B1 (en) 2014-04-01 2018-09-04 젠텍스 코포레이션 Automatic display mirror assembly
US9623878B2 (en) 2014-04-02 2017-04-18 Magna Electronics Inc. Personalized driver assistance system for vehicle
US9487235B2 (en) 2014-04-10 2016-11-08 Magna Electronics Inc. Vehicle control system with adaptive wheel angle correction
KR101592685B1 (en) * 2014-04-16 2016-02-12 현대자동차주식회사 System for detecting obstacle using a road surface model setting and method thereof
US10328932B2 (en) 2014-06-02 2019-06-25 Magna Electronics Inc. Parking assist system with annotated map generation
JP6516421B2 (en) * 2014-07-31 2019-05-22 日本セラミック株式会社 Safety device using an ultrasonic distance meter unit mounted on a vehicle and a distance meter
US9925980B2 (en) 2014-09-17 2018-03-27 Magna Electronics Inc. Vehicle collision avoidance system with enhanced pedestrian avoidance
WO2016044746A1 (en) 2014-09-19 2016-03-24 Gentex Corporation Rearview assembly
US9663127B2 (en) 2014-10-28 2017-05-30 Smartdrive Systems, Inc. Rail vehicle event detection and recording system
US9433065B2 (en) * 2014-11-05 2016-08-30 Stmicroelectronics (Research & Development) Limited Lighting system including time of flight ranging system
WO2016073848A1 (en) 2014-11-07 2016-05-12 Gentex Corporation Full display mirror actuator
US11069257B2 (en) 2014-11-13 2021-07-20 Smartdrive Systems, Inc. System and method for detecting a vehicle event and generating review criteria
EP3218227B1 (en) 2014-11-13 2018-10-24 Gentex Corporation Rearview mirror system with a display
KR101997815B1 (en) 2014-12-03 2019-07-08 젠텍스 코포레이션 Display mirror assembly
USD746744S1 (en) 2014-12-05 2016-01-05 Gentex Corporation Rearview device
CN105792460B (en) * 2014-12-18 2019-08-13 深圳市海洋王照明工程有限公司 Lighting circuit
US9744907B2 (en) 2014-12-29 2017-08-29 Gentex Corporation Vehicle vision system having adjustable displayed field of view
US9720278B2 (en) 2015-01-22 2017-08-01 Gentex Corporation Low cost optical film stack
US9679420B2 (en) 2015-04-01 2017-06-13 Smartdrive Systems, Inc. Vehicle event recording system and method
JP2018513810A (en) 2015-04-20 2018-05-31 ジェンテックス コーポレイション Rear view assembly with decoration
US10819943B2 (en) 2015-05-07 2020-10-27 Magna Electronics Inc. Vehicle vision system with incident recording function
EP3297870B1 (en) 2015-05-18 2020-02-05 Gentex Corporation Full display rearview device
CN106274702A (en) * 2015-06-12 2017-01-04 郭骏贤 Multimode suitching type chip for rear-view mirror of car
WO2016209877A1 (en) 2015-06-22 2016-12-29 Gentex Corporation System and method for processing streamed video images to correct for flicker of amplitude-modulated lights
US10214206B2 (en) 2015-07-13 2019-02-26 Magna Electronics Inc. Parking assist system for vehicle
US10078789B2 (en) 2015-07-17 2018-09-18 Magna Electronics Inc. Vehicle parking assist system with vision-based parking space detection
US10086870B2 (en) 2015-08-18 2018-10-02 Magna Electronics Inc. Trailer parking assist system for vehicle
JP6429751B2 (en) * 2015-08-31 2018-11-28 三菱電機株式会社 Obstacle detection device
JP6207803B2 (en) * 2015-08-31 2017-10-04 三菱電機株式会社 Ultrasonic sensor and obstacle detection device
US10875403B2 (en) 2015-10-27 2020-12-29 Magna Electronics Inc. Vehicle vision system with enhanced night vision
EP3368375B1 (en) 2015-10-30 2020-03-04 Gentex Corporation Rearview device
USD797627S1 (en) 2015-10-30 2017-09-19 Gentex Corporation Rearview mirror device
CN108349435B (en) 2015-10-30 2021-06-15 金泰克斯公司 Switching board
USD798207S1 (en) 2015-10-30 2017-09-26 Gentex Corporation Rearview mirror assembly
USD800618S1 (en) 2015-11-02 2017-10-24 Gentex Corporation Toggle paddle for a rear view device
US10144419B2 (en) 2015-11-23 2018-12-04 Magna Electronics Inc. Vehicle dynamic control system for emergency handling
CN105487079A (en) * 2015-12-11 2016-04-13 成都翰兴科技有限公司 Gain flash-lamp type underground parking lot backing auxiliary system
US11277558B2 (en) 2016-02-01 2022-03-15 Magna Electronics Inc. Vehicle vision system with master-slave camera configuration
US11433809B2 (en) 2016-02-02 2022-09-06 Magna Electronics Inc. Vehicle vision system with smart camera video output
US10160437B2 (en) 2016-02-29 2018-12-25 Magna Electronics Inc. Vehicle control system with reverse assist
US20170253237A1 (en) 2016-03-02 2017-09-07 Magna Electronics Inc. Vehicle vision system with automatic parking function
US10132971B2 (en) 2016-03-04 2018-11-20 Magna Electronics Inc. Vehicle camera with multiple spectral filters
US10055651B2 (en) 2016-03-08 2018-08-21 Magna Electronics Inc. Vehicle vision system with enhanced lane tracking
USD845851S1 (en) 2016-03-31 2019-04-16 Gentex Corporation Rearview device
USD817238S1 (en) 2016-04-29 2018-05-08 Gentex Corporation Rearview device
US20170341577A1 (en) * 2016-05-25 2017-11-30 Pattie Pool Driver Alert System
US10025138B2 (en) 2016-06-06 2018-07-17 Gentex Corporation Illuminating display with light gathering structure
US10086763B2 (en) * 2016-07-19 2018-10-02 GM Global Technology Operations LLC System and method for enhancing vehicle environment perception
USD809984S1 (en) 2016-12-07 2018-02-13 Gentex Corporation Rearview assembly
USD854473S1 (en) 2016-12-16 2019-07-23 Gentex Corporation Rearview assembly
EP3562710A4 (en) 2016-12-30 2019-11-13 Gentex Corporation Full display mirror with on-demand spotter view
CN110312641A (en) 2017-03-17 2019-10-08 金泰克斯公司 Dual display reversing camera system
JP6851018B2 (en) * 2017-03-24 2021-03-31 パナソニックＩｐマネジメント株式会社 In-car lighting and automobiles
CN106926780A (en) * 2017-04-17 2017-07-07 贵州大学 A kind of device for eliminating driver blind area
CN107933427A (en) * 2017-11-09 2018-04-20 武汉华安科技股份有限公司 A kind of embedded oversize vehicle parking assisting system
CN108957459A (en) * 2018-05-29 2018-12-07 肇庆奥迪威传感科技有限公司 Digital type ultrasound wave sensor, distance detection system and method
US11208039B2 (en) 2019-07-25 2021-12-28 Adam Benjamin Tannenbaum Vehicular surveillance system
CN110562139A (en) * 2019-08-08 2019-12-13 湖南成鑫专用汽车有限公司 Novel multifunctional intelligent visual system for semitrailer
US11089205B2 (en) * 2019-08-16 2021-08-10 Toyota Motor Engineering & Manufacturing North America, Inc. Window position monitoring system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940822A (en) * 1975-02-19 1976-03-02 All Weather Truck Mirror Co., Inc. Rear view safety mirror
US4500977A (en) * 1980-09-25 1985-02-19 Egon Gelhard Method and apparatus for measuring a distance using ultrasonic echo signals, particularly for use on a motor vehicle
US4943796A (en) * 1989-06-09 1990-07-24 Lee Y C Rear view mirror mounted reversing distance sensor
US4974215A (en) * 1989-11-29 1990-11-27 Portec, Inc. Loading dock range finding system

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4626850A (en) * 1983-05-16 1986-12-02 David Chey Vehicle detection and collision avoidance apparatus
USRE32576E (en) * 1984-01-18 1988-01-12 Combination rear view mirror and digital clock
US4674073A (en) * 1985-02-28 1987-06-16 Aisin Seiki Kabushiki Kaisha Reflective object detecting apparatus
US4903004A (en) * 1986-11-05 1990-02-20 Starke Jeffrey W All-weather digital distance measuring and signalling system
US4882565A (en) * 1988-03-02 1989-11-21 Donnelly Corporation Information display for rearview mirrors
US4968124A (en) * 1988-07-27 1990-11-06 Poly-Optical Products, Inc. Vehicle viewing system
US4937796A (en) * 1989-01-10 1990-06-26 Tendler Robert K Vehicle backing aid
US5016996A (en) * 1989-11-03 1991-05-21 Yasushi Ueno Rearview mirror with operating condition display
US5037182A (en) * 1990-09-12 1991-08-06 Delco Electronics Corporation Rearview mirror head-up display
US5144661A (en) * 1991-02-11 1992-09-01 Robert Shamosh Security protection system and method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940822A (en) * 1975-02-19 1976-03-02 All Weather Truck Mirror Co., Inc. Rear view safety mirror
US4500977A (en) * 1980-09-25 1985-02-19 Egon Gelhard Method and apparatus for measuring a distance using ultrasonic echo signals, particularly for use on a motor vehicle
US4943796A (en) * 1989-06-09 1990-07-24 Lee Y C Rear view mirror mounted reversing distance sensor
US4974215A (en) * 1989-11-29 1990-11-27 Portec, Inc. Loading dock range finding system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2292857B (en) * 1994-08-29 1999-09-22 Motorola Inc Radio frequency communication device including a mirrored surface
EP1396381A1 (en) * 2002-09-06 2004-03-10 Stefan Dipl.-Wirtsch.-Ing. Voit Electronic distance warning system
CN104678401A (en) * 2013-11-29 2015-06-03 青岛永通电梯工程有限公司 Intelligent distance measuring method

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US5303205A (en) 1994-04-12

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