US20110015809A1 - Device and Method for Wireless Vehicle Communication - Google Patents
Device and Method for Wireless Vehicle Communication Download PDFInfo
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- US20110015809A1 US20110015809A1 US12/893,154 US89315410A US2011015809A1 US 20110015809 A1 US20110015809 A1 US 20110015809A1 US 89315410 A US89315410 A US 89315410A US 2011015809 A1 US2011015809 A1 US 2011015809A1
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- vehicle
- data
- receiver
- microprocessor
- trailer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0965—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages responding to signals from another vehicle, e.g. emergency vehicle
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096708—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/1141—One-way transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/40—Arrangements in telecontrol or telemetry systems using a wireless architecture
Definitions
- This invention relates to a device and method for wireless vehicle communication. More specifically, this invention relates to utilizing a wireless receiver in a vehicle for receiving data to be displayed by, for example, an existing vehicle display such as a message center or a navigation screen.
- a common, standardized data format is utilized and may include a unique serial code.
- Vehicles are used to tow a variety of things, such as boat trailers, motorcycle trailers, moving trailers, livestock trailers including horse trailers, house trailers, etc.
- Livestock as used herein, may include any domesticated or wild animal, fish, or fowl.
- U.S. Pat. No. 6,501,376 discloses a method and apparatus for data exchange between a towing vehicle and a trailer using radio contact via transmission/receiving modules in the towing vehicle and the trailer.
- Data transmitted wirelessly by the towing vehicle includes an identification signal that is stored by the trailer and used subsequently for wireless communications.
- Wireless communication is used to transmit data representing the temperature and pressure values in the trailer.
- U.S. Patent Publication No. U.S. 2005/0270148 discloses a trailer tire monitoring system and method using tire sensors monitoring an operating parameter and transmitting data representing the parameter wirelessly to an in-vehicle receiver.
- the vehicle's remote keyless entry (RKE) receiver can be used.
- An in-vehicle indicator (such as a display) communicates with the receiver and is available to the vehicle operator.
- the in-vehicle receiver and indicator are embodied in a portable hand-held unit that can easily be moved to a different vehicle, allowing multiple vehicles to tow and communicate wirelessly with the trailer. Low battery status may also be transmitted.
- U.S. Pat. No. 4,952,908 discloses a wireless trailer stability monitor including an RF receiver in the cab and an RF transmitter in the trailer.
- a motion sensor in the trailer senses conditions conducive to rollover, which are transmitted to the cab to warn the operator of such conditions.
- U.S. Pat. 6,525,654 discloses monitoring the operation of electrical circuits on a vehicle trailer and outputting a signal in response to failure of a component such as a lamp.
- a transmitter passes a failure indication signal to a receiver in a position where it can notify the vehicle driver.
- Wireless RF signals can be used.
- U.S. Patent Publication No. U.S. 2002/0130771 discloses a system for remotely sensing the temperature and pressure in vehicle tires. Data representing tire pressure and temperature is transmitted with a unique ID from the sensor to a portable cab display.
- U.S. Patent Publication No. U.S. 2005/0062590 discloses a wireless data transfer system for a tractor-trailer. Data transferred to the operator can represent objects behind the vehicle to avoid collision, safety information such as tire pressure, and trailer temperature.
- the invention provides a device, system; and method for wireless communication with a vehicle, comprising a receiver mounted in or on the vehicle for receiving data from a wireless transmitter, and a microprocessor in communication with the receiver for processing the data.
- the data has a format adapted to be processed by the microprocessor and is intended for receipt by all vehicles within a predetermined wireless range that have microprocessors capable of processing its standard format.
- the invention also provides a method for wireless communication with a vehicle, comprising transmitting data having a standard format, receiving the data having a standard format, and processing the data having a standard format.
- the data is intended for receipt by all vehicles within a predetermined range that have microprocessors capable of processing its standard format.
- the invention further provides a device, system, and method for disabling a vehicle using only information transmitted to the vehicle, comprising a receiver mounted in or on the vehicle and for receiving data wirelessly, and a microprocessor in communication with the receiver for processing the data.
- the data includes a unique vehicle identifier and an instruction to disable the vehicle.
- the invention further provides a device for wirelessly monitoring environmental conditions of a livestock trailer towed by a vehicle, comprising a wireless transmitter mounted on the livestock trailer, a receiver mounted in or on the vehicle and adapted to receive data from the wireless transmitter, and a microprocessor in communication with the receiver and processing the data.
- FIG. 1 is a schematic diagram of an embodiment of the invention having a transmitter attached to a trailer.
- FIG. 2 illustrates a dashboard of a vehicle having a message center and a navigation screen.
- FIG. 3 illustrates an embodiment of the invention having a transmitter attached to a roadside sign.
- FIG. 4 illustrates an embodiment of the invention having a transmitter attached to a school bus.
- FIG. 5 is a flow chart illustrating an embodiment of signal processing according to the invention.
- FIG. 6 is a flow chart illustrating another embodiment of signal processing according to the invention.
- FIG. 7A illustrates an embodiment of a displayed message in accordance with an embodiment of the invention.
- FIG. 7B illustrates an embodiment of a displayed message in accordance with an embodiment of the invention.
- FIG. 7C illustrates an embodiment of a displayed message in accordance with an embodiment of the invention.
- FIG. 7D illustrates an embodiment of a displayed message in accordance with an embodiment of the invention.
- FIG. 7E illustrates an embodiment of a displayed message in accordance with an embodiment of the invention.
- FIG. 7F illustrates an embodiment of a displayed message in accordance with an embodiment of the invention.
- FIG. 8 illustrates an exemplary embodiment of a data stream for use in accordance with the invention.
- the present invention provides a universal method in which a wireless receiver receives data in a standardized format from a wireless transmitter.
- the data is displayed to vehicle occupants using an existing vehicle display, or is used to control the vehicle from a remote location.
- the wireless transmitter may be installed in a variety of places, depending on the type of data being transmitted.
- a transmitter installed on a boat or motorcycle trailer may transmit tire pressure, bearing temperature, trailer sway, brake light function, and load shift data.
- a transmitter installed in a livestock trailer may transmit the same data, and additionally transmit information such as food levels, water levels, environment temperature and humidity, etc.
- the present invention contemplates transmission of livestock vital signs.
- a transmitter installed on a school bus (see FIG. 4 ) may be used to transmit warning information to vehicles in its vicinity, for example when it is approaching a bus stop.
- a transmitter may similarly be installed on a police cruiser, ambulance, or fire truck for transmitting warning information to vehicles in its vicinity.
- Transmitters may additionally be installed along roadways to transmit school zone warnings and speed limits, other safety information, or traffic advisories. Transmitters can be used by private entities for sending advertising to vehicle occupants, or providing useful information such as wait times for services (see, e.g., FIG. 7E ) or availability of parking (see, e.g., FIG. 7F ).
- the transmitter may be a simple, known device and need only include a power supply and be capable of transmitting data in a standardized format compatible with the vehicle's existing receiver.
- FIG. 7C An exemplary display is illustrated in FIG. 7C .
- the wireless receiver may be, for example, an RF receiver such as the commonly-used remote keyless entry (RKE) receiver or tire pressure monitoring system (TPMS) receiver, which provides a standard communication interface.
- RKE remote keyless entry
- TPMS tire pressure monitoring system
- Other suitable wireless receivers may be used.
- a common data format is used so that existing receivers and microprocessors can receive and process the data, and the intended display, such as a message center or navigation screen (see FIG. 2 ), can be used to display the received information.
- the vehicle message center is commonly a disassociated display that displays information from multiple sources internal to the vehicle, such as the radio, ECU, etc. So long as the transmitter transmits information using the common data format, the information can be displayed to the user.
- the common data format includes a unique serial code or a predetermined serial code allowing the vehicle receiver to select transmissions that are intended for the vehicle.
- the system for receiving data may then employ an auto discovery process that checks for transmitter signals having the unique or predetermined serial code.
- the present invention contemplates a system that does not use an auto discovery process.
- the vehicle receives data including a unique serial code or a predetermined serial code upon electrical connection of the trailer and the vehicle.
- transmission of the serial code and electrical connection of the vehicle and trailer are substantially simultaneous. Receipt and acceptance of a correct serial code is required to establish a communication link between the vehicle and the trailer.
- the receiver no longer performs the auto discovery process until the communication link has been terminated.
- the serial code is set the first time the trailer and the vehicle are electrically connected, by transmitting the code from the vehicle to the trailer for storage in the trailer's transmitter. That serial code is then used to establish a communication link each time the trailer and vehicle are connected,
- the serial code can alternatively be preprogrammed into the trailer or set by the trailer the first time the vehicle and the trailer are connected.
- the vehicle when a transmitter is mounted on a trailer being towed by the vehicle (see FIG. 1 ), it is desirable to have a unique serial code so that the vehicle will only receive data from the trailer it is towing.
- the vehicle may check for a trailer signal with the unique serial code when power is first applied (e.g., through the trailer's wired connection) and listen for a trailer signal to link the vehicle and trailer and prevent other trailer signals from being accepted.
- a transmitter when a transmitter is mounted along a roadway (see FIG. 3 ) or by a private entity, it is desirable to have a predetermined serial code so that a number of intended vehicles will receive data from the transmitter.
- the vehicle checks for signals with the predetermined serial code periodically, and receives data from the transmitter for a predetermined amount of time or while it remains within range of the transmitter.
- This embodiment includes receipt of reduced speed zones (see FIG. 3 ), emergency vehicle proximity, advertising, and other types of useful information such as parking lot vacancies, service waits, etc.
- the present invention also contemplates assigning levels of importance or type to data.
- a filter can then be employed, similar to known SPAM filters, allowing vehicle occupants a certain ability to determine different levels or types of information that will be displayed. For example, occupants may choose to receive speed limit warnings (see, e.g., FIG. 7A ), traffic advisories (see, e.g., FIG. 7B ), and safety information (see, e.g., FIG. 7D ), but may not want to receive advertising. It may alternatively be required that certain safety information be displayed to the occupants.
- the vehicle's receiver receives transmitted information including the reduced speed limit and perhaps an identification of the reason, such as a school zone.
- An existing microprocessor within the vehicle that communicates with the receiver for example the RKE microprocessor, receives the reduced speed limit, determines the vehicle's actual speed (for example by querying the vehicle's speedometer), and compares the two speeds.
- Other existing microprocessors may be used alternatively or additionally, including the engine control microprocessor or the instrument cluster microprocessor.
- the microprocessor may send a display message to the operator indicating that the vehicle speed should be reduced.
- the display message may additionally include the reduced speed limit, the vehicle's actual speed, and the reason for the reduced speed (e.g., school zone).
- the display may additionally flash or include an audio alarm to attract the operator's attention.
- the transmitted data itself may prompt the microprocessor to perform these tasks, or the microprocessor may be preprogrammed to perform certain tasks upon receiving a type of data.
- the vehicle's receiver receives transmitted information that signifies the presence of the emergency vehicle.
- a microprocessor within the vehicle that is in communication with the receiver queries the vehicles audio system to determine a volume level. If the volume level is above a predetermine threshold, the microprocessor reduces the volume to allow the vehicle operator to hear the emergency vehicle siren and thereby determine its location and direction with respect to the vehicle. Alternatively, the microprocessor may simply mute the audio system rather than querying the volume level.
- the transmitted data itself may prompt the microprocessor to perform these tasks, or the microprocessor may be preprogrammed to perform certain tasks upon receiving a type of data.
- the vehicle's wireless receiver to facilitate remote control of a vehicle
- law enforcement personnel can transmit data allowing them to disable a vehicle being pursued or that otherwise poses a safety threat to others.
- the disabling transmission may need to include such information as a special code based on the vehicle's VIN number and a public key encryption.
- the vehicle may be disabled gracefully by slowly decreasing engine power and speed and eventually stopping the vehicle.
- An embodiment of the invention contemplates providing law enforcement with the ability to disable a vehicle within a given transmission range, even if the vehicle is not within site of a law enforcement officer.
- the vehicle manufacturer incurs little or no cost.
- a standardized protocol is used to receive message from various sources, including those listed above.
- Canned messages may be stored in the vehicle (e.g., in the microprocessor employed in receiving, processing, and displaying data) or may be transmitted in the message content received by the transmitter and deciphered by the microprocessor. A combination of both can also be used.
- a hierarchical structure may be used to give priority to some messages over others. The hierarchical structure may be set by the transmitter or the receiver. If the data transmitted includes a message type or level, that information can be used by the microprocessor to set message priority. Alternatively, when canned messages are used, a message type or level can be preprogrammed along with each message and used to set message priority.
- the transmitter transmits a signal
- the vehicle's receiver receives the signal and sends it to the microprocessor
- the microprocessor performs any necessary processing (e.g., deciphering a message, comparing vehicle speed to reduced speed limit, checking audio system volume level) and sends a suitable message to the display.
- FIG. 8 illustrates an exemplary embodiment of a data stream or frame for use in accordance with the invention.
- the first field is an internal field separator or white space for separating multiple pieces of data.
- a one-bit “start-of-frame” (SOF) field follows, and then a 32/12 bit arbitration field. Arbitration fields are used to prioritize messages.
- SOF start-of-frame
- a 6-bit control field is followed by a data field of 0-8 bytes.
- a 16-bit CRC field is used to perform a redundancy check.
- a 2-bit ACK field acknowledges receipt of the transmitted packet and a 7-bit end-of-frame (EOF) field finishes the data stream or frame.
- EEF end-of-frame
- the present invention contemplates a data stream having three basic message parts: (1) a preamble of, for example, 12 bytes for synchronization and to indicate the type of data that will follow; (2) a payload that includes data consisting, for example, of a unique or predetermined ID of the transmitter or for the vehicle, a counter for the messages, and data such as commands or ASCII characters for the system to display; and (3) a CRC redundancy check field of, for example, 2 bytes.
- the payload may comprise, for example, up to 128 bytes.
Abstract
The invention provides a device, system, and method for wireless communication with a vehicle, comprising a receiver mounted in or on the vehicle for receiving data from a wireless transmitter, and a microprocessor in communication with the receiver for processing the data. The data has a format adapted to be processed by the microprocessor and is intended for receipt by all vehicles within a predetermined wireless range that have microprocessors capable of processing its standard format. The invention also provides a method for wireless communication with a vehicle, comprising transmitting data having a standard format, receiving the data having a standard format, and processing the data having a standard format. The data is intended for receipt by all vehicles within a predetermined range that have microprocessors capable of processing its standard format. The invention further provides a device, system, and method for disabling a vehicle using only information transmitted to the vehicle, comprising a receiver mounted in or on the vehicle and for receiving data wirelessly, and a microprocessor in communication with the receiver for processing the data. The data includes a unique vehicle identifier and an instruction to disable the vehicle. The invention further provides a device for wirelessly monitoring environmental conditions of a livestock trailer towed by a vehicle, comprising a wireless transmitter mounted on the livestock trailer, a receiver mounted in or on the vehicle and adapted to receive data from the wireless transmitter, and a microprocessor in communication with the receiver and processing the data.
Description
- This invention relates to a device and method for wireless vehicle communication. More specifically, this invention relates to utilizing a wireless receiver in a vehicle for receiving data to be displayed by, for example, an existing vehicle display such as a message center or a navigation screen. A common, standardized data format is utilized and may include a unique serial code.
- Vehicles are used to tow a variety of things, such as boat trailers, motorcycle trailers, moving trailers, livestock trailers including horse trailers, house trailers, etc. Livestock, as used herein, may include any domesticated or wild animal, fish, or fowl.
- U.S. Pat. No. 6,501,376 discloses a method and apparatus for data exchange between a towing vehicle and a trailer using radio contact via transmission/receiving modules in the towing vehicle and the trailer. Data transmitted wirelessly by the towing vehicle includes an identification signal that is stored by the trailer and used subsequently for wireless communications. Wireless communication is used to transmit data representing the temperature and pressure values in the trailer.
- U.S. Patent Publication No. U.S. 2005/0270148 discloses a trailer tire monitoring system and method using tire sensors monitoring an operating parameter and transmitting data representing the parameter wirelessly to an in-vehicle receiver. The vehicle's remote keyless entry (RKE) receiver can be used. An in-vehicle indicator (such as a display) communicates with the receiver and is available to the vehicle operator. The in-vehicle receiver and indicator are embodied in a portable hand-held unit that can easily be moved to a different vehicle, allowing multiple vehicles to tow and communicate wirelessly with the trailer. Low battery status may also be transmitted.
- U.S. Pat. No. 4,952,908 discloses a wireless trailer stability monitor including an RF receiver in the cab and an RF transmitter in the trailer. A motion sensor in the trailer senses conditions conducive to rollover, which are transmitted to the cab to warn the operator of such conditions. U.S. Pat. 6,525,654 discloses monitoring the operation of electrical circuits on a vehicle trailer and outputting a signal in response to failure of a component such as a lamp. A transmitter passes a failure indication signal to a receiver in a position where it can notify the vehicle driver. Wireless RF signals can be used.
- U.S. Patent Publication No. U.S. 2002/0130771 discloses a system for remotely sensing the temperature and pressure in vehicle tires. Data representing tire pressure and temperature is transmitted with a unique ID from the sensor to a portable cab display. U.S. Patent Publication No. U.S. 2005/0062590 discloses a wireless data transfer system for a tractor-trailer. Data transferred to the operator can represent objects behind the vehicle to avoid collision, safety information such as tire pressure, and trailer temperature.
- Similarly, there exist systems for wirelessly sending a variety of information to a vehicle. Many of these systems, however, rely On tracking vehicle location, such as via satellite. Such a system requires the addition of satellite tracking equipment that is not presently standard or even common in vehicles, and require the vehicle to be able to send and receive data.
- There also exist systems that communicate with a vehicle to allow wireless control of a vehicle. These systems require additional equipment for the vehicle and/or require a dialog wherein the vehicle must be able to send and receive data,
- There exists a need to provide an inexpensive and simple method for wirelessly communicating with a vehicle to control an aspect of the vehicle, such as its existing display devices. Such a system could allow monitoring and communication of trailer status to ensure safe operation and to raise awareness of potential problems or safety issues such as trailer internal environment, low tire pressure, bearing temperature, load shifting, trailer sway, brake light functioning, and trailer brake diagnostics.
- In addition to monitoring and communicating trailer environment for improved safety, there is a need for inexpensively communicating a wide variety of data to vehicle occupants, such as safety information, advertising, traffic advisories, etc. There also exists a potential for facilitating remote control of a vehicle, for example allowing law enforcement to disable a vehicle being pursued or that otherwise poses a safety threat to others.
- The invention provides a device, system; and method for wireless communication with a vehicle, comprising a receiver mounted in or on the vehicle for receiving data from a wireless transmitter, and a microprocessor in communication with the receiver for processing the data. The data has a format adapted to be processed by the microprocessor and is intended for receipt by all vehicles within a predetermined wireless range that have microprocessors capable of processing its standard format.
- The invention also provides a method for wireless communication with a vehicle, comprising transmitting data having a standard format, receiving the data having a standard format, and processing the data having a standard format. The data is intended for receipt by all vehicles within a predetermined range that have microprocessors capable of processing its standard format.
- The invention further provides a device, system, and method for disabling a vehicle using only information transmitted to the vehicle, comprising a receiver mounted in or on the vehicle and for receiving data wirelessly, and a microprocessor in communication with the receiver for processing the data. The data includes a unique vehicle identifier and an instruction to disable the vehicle.
- The invention further provides a device for wirelessly monitoring environmental conditions of a livestock trailer towed by a vehicle, comprising a wireless transmitter mounted on the livestock trailer, a receiver mounted in or on the vehicle and adapted to receive data from the wireless transmitter, and a microprocessor in communication with the receiver and processing the data.
- The accompanying drawings, which are incorporated herein and form part of the specification, illustrate the prior art and the present invention and together with the description, further serve to explain the principles of the invention and to enable a person skilled in the pertinent art to make and use the invention.
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FIG. 1 is a schematic diagram of an embodiment of the invention having a transmitter attached to a trailer. -
FIG. 2 illustrates a dashboard of a vehicle having a message center and a navigation screen. -
FIG. 3 illustrates an embodiment of the invention having a transmitter attached to a roadside sign. -
FIG. 4 illustrates an embodiment of the invention having a transmitter attached to a school bus. -
FIG. 5 is a flow chart illustrating an embodiment of signal processing according to the invention. -
FIG. 6 is a flow chart illustrating another embodiment of signal processing according to the invention. -
FIG. 7A illustrates an embodiment of a displayed message in accordance with an embodiment of the invention. -
FIG. 7B illustrates an embodiment of a displayed message in accordance with an embodiment of the invention. -
FIG. 7C illustrates an embodiment of a displayed message in accordance with an embodiment of the invention. -
FIG. 7D illustrates an embodiment of a displayed message in accordance with an embodiment of the invention. -
FIG. 7E illustrates an embodiment of a displayed message in accordance with an embodiment of the invention. -
FIG. 7F illustrates an embodiment of a displayed message in accordance with an embodiment of the invention. -
FIG. 8 illustrates an exemplary embodiment of a data stream for use in accordance with the invention. - In accordance with an embodiment, the present invention provides a universal method in which a wireless receiver receives data in a standardized format from a wireless transmitter. The data is displayed to vehicle occupants using an existing vehicle display, or is used to control the vehicle from a remote location.
- The wireless transmitter may be installed in a variety of places, depending on the type of data being transmitted. For example, a transmitter installed on a boat or motorcycle trailer may transmit tire pressure, bearing temperature, trailer sway, brake light function, and load shift data. A transmitter installed in a livestock trailer may transmit the same data, and additionally transmit information such as food levels, water levels, environment temperature and humidity, etc. The present invention contemplates transmission of livestock vital signs. A transmitter installed on a school bus (see
FIG. 4 ) may be used to transmit warning information to vehicles in its vicinity, for example when it is approaching a bus stop. A transmitter may similarly be installed on a police cruiser, ambulance, or fire truck for transmitting warning information to vehicles in its vicinity. Transmitters may additionally be installed along roadways to transmit school zone warnings and speed limits, other safety information, or traffic advisories. Transmitters can be used by private entities for sending advertising to vehicle occupants, or providing useful information such as wait times for services (see, e.g.,FIG. 7E ) or availability of parking (see, e.g.,FIG. 7F ). The transmitter may be a simple, known device and need only include a power supply and be capable of transmitting data in a standardized format compatible with the vehicle's existing receiver. - In a case where a transmitter is installed in a livestock trailer and transmits environmental information such as temperature, humidity, water, and food levels, an exemplary display is illustrated in
FIG. 7C . - The wireless receiver may be, for example, an RF receiver such as the commonly-used remote keyless entry (RKE) receiver or tire pressure monitoring system (TPMS) receiver, which provides a standard communication interface. Other suitable wireless receivers may be used.
- According to an embodiment of the invention, a common data format is used so that existing receivers and microprocessors can receive and process the data, and the intended display, such as a message center or navigation screen (see
FIG. 2 ), can be used to display the received information. The vehicle message center is commonly a disassociated display that displays information from multiple sources internal to the vehicle, such as the radio, ECU, etc. So long as the transmitter transmits information using the common data format, the information can be displayed to the user. According to an embodiment of the invention, the common data format includes a unique serial code or a predetermined serial code allowing the vehicle receiver to select transmissions that are intended for the vehicle. The system for receiving data may then employ an auto discovery process that checks for transmitter signals having the unique or predetermined serial code. The present invention contemplates a system that does not use an auto discovery process. - In an exemplary auto discovery process that could be used with a vehicle-trailer system, the vehicle receives data including a unique serial code or a predetermined serial code upon electrical connection of the trailer and the vehicle. In an embodiment of the invention, transmission of the serial code and electrical connection of the vehicle and trailer are substantially simultaneous. Receipt and acceptance of a correct serial code is required to establish a communication link between the vehicle and the trailer. In an embodiment of the invention, once the correct serial code has be received and a communication link has been established between the vehicle and the trailer, the receiver no longer performs the auto discovery process until the communication link has been terminated.
- In an embodiment of the invention, the serial code is set the first time the trailer and the vehicle are electrically connected, by transmitting the code from the vehicle to the trailer for storage in the trailer's transmitter. That serial code is then used to establish a communication link each time the trailer and vehicle are connected, The serial code can alternatively be preprogrammed into the trailer or set by the trailer the first time the vehicle and the trailer are connected.
- According to an embodiment of the invention, when a transmitter is mounted on a trailer being towed by the vehicle (see
FIG. 1 ), it is desirable to have a unique serial code so that the vehicle will only receive data from the trailer it is towing. In this embodiment, the vehicle may check for a trailer signal with the unique serial code when power is first applied (e.g., through the trailer's wired connection) and listen for a trailer signal to link the vehicle and trailer and prevent other trailer signals from being accepted. - In another embodiment of the invention, when a transmitter is mounted along a roadway (see
FIG. 3 ) or by a private entity, it is desirable to have a predetermined serial code so that a number of intended vehicles will receive data from the transmitter. In this embodiment, the vehicle checks for signals with the predetermined serial code periodically, and receives data from the transmitter for a predetermined amount of time or while it remains within range of the transmitter. This embodiment includes receipt of reduced speed zones (seeFIG. 3 ), emergency vehicle proximity, advertising, and other types of useful information such as parking lot vacancies, service waits, etc. - The present invention also contemplates assigning levels of importance or type to data. A filter can then be employed, similar to known SPAM filters, allowing vehicle occupants a certain ability to determine different levels or types of information that will be displayed. For example, occupants may choose to receive speed limit warnings (see, e.g.,
FIG. 7A ), traffic advisories (see, e.g.,FIG. 7B ), and safety information (see, e.g.,FIG. 7D ), but may not want to receive advertising. It may alternatively be required that certain safety information be displayed to the occupants. - In accordance with an embodiment of the invention receiving speed limit information as illustrated in
FIG. 5 , for example upon entry of the vehicle into a reduced speed zone such as a school zone or a construction zone, the vehicle's receiver receives transmitted information including the reduced speed limit and perhaps an identification of the reason, such as a school zone. An existing microprocessor within the vehicle that communicates with the receiver, for example the RKE microprocessor, receives the reduced speed limit, determines the vehicle's actual speed (for example by querying the vehicle's speedometer), and compares the two speeds. Other existing microprocessors may be used alternatively or additionally, including the engine control microprocessor or the instrument cluster microprocessor. Upon comparing the two speeds, if the vehicle's actual speed is greater than the reduced speed limit, the microprocessor may send a display message to the operator indicating that the vehicle speed should be reduced. The display message may additionally include the reduced speed limit, the vehicle's actual speed, and the reason for the reduced speed (e.g., school zone). The display may additionally flash or include an audio alarm to attract the operator's attention. The transmitted data itself may prompt the microprocessor to perform these tasks, or the microprocessor may be preprogrammed to perform certain tasks upon receiving a type of data. - In accordance with an embodiment of the invention receiving information that an emergency vehicle (e.g., and ambulance, police cruiser, or fire truck) is within the vehicle's vicinity as illustrated in
FIG. 6 , the vehicle's receiver receives transmitted information that signifies the presence of the emergency vehicle. A microprocessor within the vehicle that is in communication with the receiver, for example the RKE microprocessor itself, upon receiving such information, queries the vehicles audio system to determine a volume level. If the volume level is above a predetermine threshold, the microprocessor reduces the volume to allow the vehicle operator to hear the emergency vehicle siren and thereby determine its location and direction with respect to the vehicle. Alternatively, the microprocessor may simply mute the audio system rather than querying the volume level. The transmitted data itself may prompt the microprocessor to perform these tasks, or the microprocessor may be preprogrammed to perform certain tasks upon receiving a type of data. - In accordance with an embodiment of the invention using the vehicle's wireless receiver to facilitate remote control of a vehicle, law enforcement personnel can transmit data allowing them to disable a vehicle being pursued or that otherwise poses a safety threat to others. In an embodiment of the invention, the disabling transmission may need to include such information as a special code based on the vehicle's VIN number and a public key encryption. In an embodiment of the invention, the vehicle may be disabled gracefully by slowly decreasing engine power and speed and eventually stopping the vehicle. An embodiment of the invention contemplates providing law enforcement with the ability to disable a vehicle within a given transmission range, even if the vehicle is not within site of a law enforcement officer.
- In an embodiment of the invention where an existing vehicle receiver, microprocessor, and display are used, the vehicle manufacturer incurs little or no cost.
- In an embodiment of the invention, a standardized protocol is used to receive message from various sources, including those listed above. Canned messages may be stored in the vehicle (e.g., in the microprocessor employed in receiving, processing, and displaying data) or may be transmitted in the message content received by the transmitter and deciphered by the microprocessor. A combination of both can also be used. A hierarchical structure may be used to give priority to some messages over others. The hierarchical structure may be set by the transmitter or the receiver. If the data transmitted includes a message type or level, that information can be used by the microprocessor to set message priority. Alternatively, when canned messages are used, a message type or level can be preprogrammed along with each message and used to set message priority.
- In a method according to the present invention, the transmitter transmits a signal, the vehicle's receiver receives the signal and sends it to the microprocessor, the microprocessor performs any necessary processing (e.g., deciphering a message, comparing vehicle speed to reduced speed limit, checking audio system volume level) and sends a suitable message to the display.
-
FIG. 8 illustrates an exemplary embodiment of a data stream or frame for use in accordance with the invention. As can be seen, the first field is an internal field separator or white space for separating multiple pieces of data. A one-bit “start-of-frame” (SOF) field follows, and then a 32/12 bit arbitration field. Arbitration fields are used to prioritize messages. Next, a 6-bit control field is followed by a data field of 0-8 bytes. After the data field, a 16-bit CRC field is used to perform a redundancy check. Next, a 2-bit ACK field acknowledges receipt of the transmitted packet and a 7-bit end-of-frame (EOF) field finishes the data stream or frame. The present invention contemplates a data stream having three basic message parts: (1) a preamble of, for example, 12 bytes for synchronization and to indicate the type of data that will follow; (2) a payload that includes data consisting, for example, of a unique or predetermined ID of the transmitter or for the vehicle, a counter for the messages, and data such as commands or ASCII characters for the system to display; and (3) a CRC redundancy check field of, for example, 2 bytes. The payload may comprise, for example, up to 128 bytes. - It is to be understood that the present invention contemplates wireless communication of data to a vehicle using other suitable wireless methods including laser, infrared, etc. Aspects of the invention may vary and remain within the scope of the invention, which is set forth below in the claims.
Claims (23)
1-22. (canceled)
23. A device for disabling a vehicle using only information transmitted to the vehicle, the device comprising:
a receiver mounted in or on the vehicle and adapted to receive data wirelessly; and
a microprocessor in communication with the receiver and adapted to process the data;
wherein in the data includes a unique vehicle identifier based on a vehicle identification number (VIN), a public encryption key, and an instruction to disable the vehicle, and
wherein the vehicle is disabled by slowly decreasing power and speed and eventually stopping the vehicle.
24. The device of claim 23 , wherein the unique vehicle identification comprises the vehicle identification number.
25. The device of claim 23 , wherein the receiver comprises a remote keyless entry (RKE) receiver.
26. The device of claim 23 , wherein the microprocessor is part of the remote keyless entry (RKE) receiver.
27-30. (canceled)
31. A method for disabling a vehicle, the method comprising:
transmitting data having a standard format and including a unique vehicle identifier based on a vehicle identification number (VIN), a public encryption key, and an instruction to disable the vehicle;
receiving the data within the vehicle; and
processing the data with a microprocessor within the vehicle; and
disabling the vehicle by slowly decreasing power and speed and eventually stopping the vehicle.
32-33. (canceled)
34. A device for wirelessly monitoring environmental conditions of a livestock trailer towed by a vehicle, the device comprising:
a wireless transmitter mounted on the livestock trailer;
a receiver mounted in or on the vehicle and adapted to receive data from the wireless transmitter; and
a microprocessor in communication with the receiver and adapted to process the data;
wherein in the data represents environmental conditions within the livestock trailer.
35. The device of claim 34 , wherein the transmitted data includes a unique serial code to establish wireless communication between the vehicle and the trailer.
36. The device of claim 34 , wherein the environmental conditions include temperature and humidity within the trailer.
37. The device of claim 34 , wherein the environmental conditions include information regarding food for livestock within the trailer.
38. The device of claim 34 , wherein the environmental conditions include information regarding water for livestock within the trailer.
39. The device of claim 23 , wherein the receiver comprises a tire pressure monitoring system (TPMS) receiver.
40. The device of claim 23 , wherein the microprocessor is part of the tire pressure monitoring system (TPMS) receiver.
41. The device of claim 23 , wherein the microprocessor is part of the instrument cluster.
42. The device of claim 23 , wherein the microprocessor is part of the engine controller.
43. The device of claim 23 , further comprising a wireless transmitter for transmitting the data.
44. The device of claim 43 , wherein the vehicle can be disabled within a given transmission range, even if the vehicle is not within sight of the wireless transmitter.
45. The method of claim 31 , wherein the microprocessor is part of the remote keyless entry (RKE) receiver.
46. The method of claim 31 , wherein the microprocessor is part of the tire pressure monitoring system (TPMS) receiver.
47. The method of claim 31 , wherein the microprocessor is part of the instrument cluster.
48. The method of claim 31 , wherein the microprocessor is part of the engine controller.
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Also Published As
Publication number | Publication date |
---|---|
GB0803263D0 (en) | 2008-04-02 |
DE102008014101A1 (en) | 2008-09-25 |
CN101269615A (en) | 2008-09-24 |
CN101269615B (en) | 2013-07-10 |
US20080231434A1 (en) | 2008-09-25 |
US7825782B2 (en) | 2010-11-02 |
GB2447731A (en) | 2008-09-24 |
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