CN104802709A

CN104802709A - Intelligent rearview mirror system

Info

Publication number: CN104802709A
Application number: CN201510144845.2A
Authority: CN
Inventors: 谭德荣; 于洋; 张洪加
Original assignee: Shandong University of Technology
Current assignee: Shandong University of Technology
Priority date: 2015-03-31
Filing date: 2015-03-31
Publication date: 2015-07-29

Abstract

The invention discloses an intelligent rearview mirror system and aims at providing an intelligent rearview mirror system based on face recognition. The intelligent rearview mirror system comprises a control unit, an image acquisition unit, an LCD display screen and a visibility sensor; the control unit comprises an image recognition algorithm; the image acquisition unit is divided into a vehicle interior image acquisition unit and a rearview image acquisition unit; the vehicle interior image acquisition unit is located above the outline of a speed-per-hour meter and used for acquiring the head face data of a driver; the head face data are processed by use of an algorithm in the control unit and a signal is output to control a rotating motor, and then the angles of outer rearview mirrors are adjusted by use of a driving mechanism connected with the rotating motor to obtain the optimal field of view of vehicle travelling; the LCD display screen is embedded in an inner rearview mirror and capable of displaying the face image of the driver or displaying the field of view behind the vehicle; the control unit intelligently switches the display contents of the LCD display screen according to the data of the visibility sensor; partial reflectors are maintained simultaneously so that the reliability of the whole system can be improved. The intelligent rearview mirror system can be widely applied to all vehicles.

Description

A kind of Intelligent rearview mirror system

Technical field

The invention belongs to field of automobile control, particularly relate to a kind of Intelligent rearview mirror system based on face recognition.

Background technology

Along with the development of social economy's level, automobile also starts to enter huge numbers of families, a kind of capital consumption product are become from initial luxury, recoverable amount is increasing, and the competition of automobile vendor is also more and more fierce, and customer is also more and more higher with expectation for the requirement of automobile, fashion, comfortable, high security, and good handlingly all become customer and purchase the factor that car considers.

Common automobile rearview mirror is generally divided into exterior mirror and room mirror, and they are most important for the safe driving of chaufeur, but traditional automobile rearview mirror exists following problem:

1, traditional vehicle outside rear-view mirror also exists blind area, when vehicle wide-angle is turned and become two or more track continuously, cannot obtain the outer clear visual field of best car from exterior mirror and room mirror observe back car, all therefore many traffic accidents occur, and cause the injures and deaths of occupant;

2, traditional vehicle inside rear-view mirror is as a kind of supplementing for exterior mirror, and when sleety weather, room mirror effect is almost in " inefficacy " state, in operator's compartment, cannot observe back car situation in all directions by room mirror at all.

In recent years, along with the fast development of in-vehicle information technology, the acceleration of vehicle intellectualized development, read-out in automobile cabin and all kinds of gauge panel get more and more, environment inside car is become increasingly complex, so not only can change the driving habit of driver by force, make driver need temporal adaptation, and the attention of driver can be disperseed, increase the probability that traffic accident occurs.

Intelligent back vision mirror technology domestic is at present all based on steering wheel angle sensor mostly, the angle of outside rear-view mirror is adjusted by the angle-data gathering bearing circle, there is a problem in this: when driver turns's bearing circle, at this moment Vehicular turn action occurs, the angle now adjusting back mirror does not again have the effect observed in advance for driver, cannot provide reliable reference for driver, although the time may be very short, the generation of many accidents is just so in a flash.

Summary of the invention

Object of the present invention is exactly for the problems referred to above, a kind of intelligent back vision mirror control system based on face recognition is provided, can judge that outside rear-view mirror is adjusted to most suitable position, the visual field, for chaufeur provides the reliable visual field by its driving intention in real time in advance according to the amplitude of fluctuation of chaufeur Head And Face.

The present invention is directed to that above-mentioned Problems existing mainly solved by following technical proposals:

A kind of intelligent back vision mirror control system, comprises chaufeur Head And Face image acquisition units, backsight image acquisition units, rotary electric machine, driver train, pressure sensor, LCD display and visibility sensor in control unit, car, it is characterized in that:

Chaufeur Head And Face image acquisition units in car, for obtaining chaufeur Head And Face action message;

Backsight image acquisition units, for obtaining rear view of vehicle road view; Control unit, processes the information that each unit and sensor transmit, and produces control information; Rotary electric machine, is connected with control unit, and passes through the action of driving mechanisms control back mirror; Driver train, is connected with rotary electric machine, adjustment door mirror angle; Pressure sensor, is connected with control unit, starts working for start up system; LCD display, the Head And Face information of display driver and display back visibibility; Visibility sensor, for perception car external environment;

Described Intelligent rearview mirror system retains traditional outside rear-view mirror, embeds in the eyeglass of traditional vehicle inside rear-view mirror with described LCD display; Described LCD display is when visbility height, and display driver face information, when low visibility, plays the graphicinformation of backsight image acquisition units, display rear view of vehicle road view;

Described pressure sensor is positioned at below operating seat, for start up system;

Be provided with face-image Processing Algorithm in described control unit, according to the chaufeur Head And Face information collected, utilize internal image Processing Algorithm, produce control signal, the angle of outside rear-view mirror for vehicle is controlled;

In described car, image acquisition units is positioned at above car speedometer profile, for collecting driver's Head And Face information.

Preferred as one, described control unit can also arrange image recognition algorithm, identifies whether, into car owner drives, to strengthen the theftproof performance of vehicle by the facial information gathering driver.

Compared with prior art, the present invention prejudges turning to of chaufeur or lane change intention by the information that image acquisition units in car is collected, adjust the angle of outside rear-view mirror for vehicle in advance, for driver provides the good visual field, provide a reference shifted to an earlier date to the driving behavior of chaufeur; By the adjustment of outside rear-view mirror angle, eliminate the ubiquitous blind area of common outside rear-view mirror; And when low visibility, start backsight image acquisition units, the lcd screen originally showing driver face's information switches to display back visibibility, for outside rear-view mirror plays supplementary function; Simultaneously, LCD display is embedded in the minute surface of traditional rear-view mirror, screen can not be set interior space additionally outside occupying volume, remain a part of light deflector, not only can not change traditional driving habit of driver, and can also when camera breaks down in the wings, for chaufeur provide one alternative, also very little, safe and reliable to the dispersiveness of driver attention.

Accompanying drawing explanation

Fig. 1 is circuit theory schematic diagram of the present invention;

Fig. 2 is a kind of embodiment of room mirror in the present invention;

Fig. 3 is a kind of embodiment of the present invention.

In figure, 1, control unit; 2, image acquisition units; 3, rotary electric machine; 4, driver train; 5, pressure sensor; 6, back mirror; 7, backsight image acquisition display module; 8, visibility sensor; 9, LCD display; 10, room mirror shell; 11, light deflector.

Detailed description of the invention

Below in conjunction with accompanying drawing, the invention will be further described.

A kind of intelligent back vision mirror control system based on face recognition, as shown in Figure 1, comprise control unit 1, gather chaufeur facial motion data and send the image acquisition units 2 of control unit 1, rotary electric machine 3, the driver train 4 that is connected with rotary electric machine 3 to, be used for starting the pressure sensor 5 of control unit 1, back mirror 6, is used for obtaining the backsight image capture module 7 of back visibibility, visibility sensor 8, LCD display 9, room mirror shell 10 and light deflector 11.

Consult Fig. 3, when chaufeur enter operator's compartment sit down time, the pressure sensor 5 be positioned under operating seat will start control unit 1, start working, start the image acquisition units 2 gathering chaufeur facial information, gather the facial information of driver, judge whether it is that car owner is in driving by the image recognition algorithm be provided with in control unit 1.

When car engine and start travel, image acquisition units 2 constantly gathers chaufeur facial motion data, be presented in the lcd screen on room mirror, data are sent into control unit 1 to judge whether chaufeur Head And Face has rotational action simultaneously, according to data with existing, if driver head turns left more than 9.2 °, send control signal after then calculating according to the algorithm in control unit 1, control rotary electric machine 3 and make back mirror 6 swing as chaufeur provides the visual field of left back maximum range left by driver train 4; If driver head's turning clockwise is more than 7.58 °, then controls rotary electric machine 3 after calculating according to the algorithm in control unit 1 and by driver train 4, back mirror 6 is swung as driver provides the visual field of right abaft maximum range to the right.

With reference to figure 2, when the outer visbility of car is very low, visibility information is sent into control unit 1 by the visibility sensor 8 being positioned at headstock and the tailstock, start backsight image acquisition display module 7, and LCD display picture room mirror showing chaufeur facial information is switched to broadcasting back visibibility image, for driver provides good visual field reference.

Claims

1. an Intelligent rearview mirror system, is characterized in that, comprising:

Backsight image acquisition units, for obtaining the Che Wai visual field, rear;

Control unit, processes the information that each unit and sensor transmit, and produces control information;

Rotary electric machine, is connected with control unit, and passes through the action of driving mechanisms control back mirror;

Driver train, is connected with rotary electric machine, adjustment door mirror angle;

Pressure sensor, is connected with control unit, for waken system, starts working;

LCD display, the Head And Face information of display driver and display back visibibility;

Visibility sensor, for perception car external environment.

2. Intelligent rearview mirror system as claimed in claim 1, is characterized in that, retain traditional outside rear-view mirror, common room mirror embeds described LCD display.

3. Intelligent rearview mirror system as claimed in claim 1, is characterized in that: described pressure sensor is positioned at below operating seat.

4. Intelligent rearview mirror system as claimed in claim 1, is characterized in that: the built-in face-image Processing Algorithm of described control unit, identifies the action of driver's Head And Face, and produces control signal.

5. Intelligent rearview mirror system as claimed in claim 1, is characterized in that: in described car, image acquisition units is positioned at above car speedometer profile.