CN1701991A - Rear-view device of automobile - Google Patents
Rear-view device of automobile Download PDFInfo
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- CN1701991A CN1701991A CN 200410042726 CN200410042726A CN1701991A CN 1701991 A CN1701991 A CN 1701991A CN 200410042726 CN200410042726 CN 200410042726 CN 200410042726 A CN200410042726 A CN 200410042726A CN 1701991 A CN1701991 A CN 1701991A
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- camera
- microprocessor
- electronic curtain
- automobile
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Abstract
The invention pertains to a rear-view device of motor, which comprises pick-up head and video screen that connect with each other by video cable. Image processing chips and microprocessor, which possesses handling procedure of backward vision and measuring, are set between pick-up head and video screen. Setting switch, which connects with driven backward machinery, connects with microprocessor and feeds status information to it. Through screen control circuit, which is set between microprocessor and video screen, microprocessor transports control information to controlling motor connected with video screen. Because of the adopting of electronic installation, even in hostile visual environment driver could completely know condition behind the car from screen exact data such as distance between car and barrier.
Description
Technical field
The present invention relates to a kind of monitoring device, be specifically related to a kind of automobile backsight device.
Background technology
So far, various automobiles are used the situation after light deflector is understood car usually when reversing.But the classical inverse light microscopic must stretch out at least 10 centimetres of car bodies, all is easier to swipe with other car at meeting with when overtaking other vehicles.And the backsight effect of light deflector is relatively poor, particularly under the visual environment harsh conditions, causes very big difficulty to driver's driving.At present, useful video line is shown to device before the driver eye to the situation at car door place with camera and telltale bonded assembly method on the bus.Using the method for camera and read-out, solve the problem that light deflector stretches out car body and automotive rear-view, is the problem that is solving at present.Can allow the driver recognize situation behind the car fully, so allow the driver can judgment object apart from the orientation and the accurate distance of this car body, the monitoring device of avoiding dangerous situation to take place does not better have as yet at present and sees.In order to overcome above many disadvantages, the reversing finder of development of new is the technical task of facing at present.
Summary of the invention
The objective of the invention is to overcome the defective of classical inverse light microscopic, a kind of driver is provided situation after also recognizing car fully under the visual environment harsh conditions, and obtains the accurate data message that self-measurings such as back car or obstacle distance arrive, the device of realizing safe driving.
For achieving the above object, the invention provides a kind of automobile backsight device, the image DSP process chip and the electronic curtain that comprise camera, be linked in sequence by vision cable with camera, be connected to microprocessor between image DSP process chip and the electronic curtain, described microprocessor has the operating sequence about backsight and measurement, and this program is carried out following steps:
A) obtain the size of the width average and the imaging pixel thereof of various vehicles;
B) the picture imaging width data of setting particular alarm distance;
C) obtain the distance and the modeling relational expression of picture imaging width;
D) start measurement, obtain actual image data;
E) carry out backsight car body or obstacle Fuzzy Processing, obtain range data, Ben Che and back vehicle speed data by the modeling relational expression;
F) judge whether to be safety distance or safety speed, and show these data and provide corresponding alarm.
Automobile backsight device of the present invention, wherein, microprocessor is connected to the position switch that links to each other with reverse machinery, and the status information of position switch is connected to microprocessor; Electronic curtain is equipped with the control motor that links to each other with its machinery, is connected to the screen control circuit between microprocessor and the electronic curtain; The control information of the corresponding output of microprocessor is connected to the control motor of electronic curtain through the screen control circuit.
Automobile backsight device of the present invention, wherein, camera and/or electronic curtain respectively have more than 2, are connected to camera between camera and the image DSP process chip and select circuit; Be connected to screen between electronic curtain and the screen control circuit and select circuit.
Automobile backsight device of the present invention, wherein, camera is equipped with electric platform and/or motorized zoom lens and/or remote control rain brush, camera is selected to be connected to the camera control circuit between circuit and the microprocessor, and the control information of microprocessor selects circuit to be connected to electric platform, motorized zoom lens and/or the remote control rain brush of corresponding camera respectively through camera control circuit and camera.
Automobile backsight device of the present invention, wherein, microprocessor is connected to the harddisk memory and the man machine operation interface of expansion.
Automobile backsight device of the present invention, wherein, camera adopts solid-state image pickup pipe or infrared thermography.
Automobile backsight device of the present invention, wherein, it is the infrared thermography of ANS/PAS-13 that camera adopts model.
Characteristics of the present invention are: because the electronics package that has adopted reversing to observe, the driver is situation after also recognizing car fully from screen under the visual environment harsh conditions, and obtain the accurate data message that self-measurings such as back car or obstacle distance arrive, thereby realize safe driving.
Description of drawings
Fig. 1 is the controlling party block diagram of automobile backsight device of the present invention;
Fig. 2 is the structural representation of automobile backsight device of the present invention;
Fig. 3 is the scheme of installation of camera in the automobile backsight device of the present invention;
Fig. 4 and Fig. 5 are the scheme of installation of electronic curtain in the automobile backsight device of the present invention;
Fig. 6 is image processing and data transmission circuit schematic diagram;
Fig. 7 is microprocessor control principle figure;
Fig. 8 is the schematic circuit diagram of control motor;
Fig. 9 is the diagram of circuit one of automobile backsight device of the present invention about backsight and measurement operation;
Figure 10 is the flowchart 2 of automobile backsight device of the present invention about backsight and measurement operation.
The specific embodiment
Referring to Fig. 1 and Fig. 2, automobile backsight device of the present invention comprises being connected to image DSP process chip 9 and microprocessor 3 between camera 1 and the electronic curtain 2 by vision cable bonded assembly camera 1 and electronic curtain 2.
In the preferred embodiment of the invention, microprocessor 3 is connected to the position switch 11 that links to each other with reverse machinery, and when the driver moveed backward, the status information of position switch 11 was connected to microprocessor 3.Electronic curtain 2 is equipped with the control motor that links to each other with its machinery, the control information of microprocessor 3 output selects circuit 6 to be connected to the control motor of electronic curtain 2 through screen control circuit 4 and screen, and selects circuit 5 to be connected to electric platform, motorized zoom lens and the remote control rain brush of camera 1 through camera control circuit 7 and camera.
In the preferred embodiment of the invention, adopt the type of transmission of coaxial cable transmission of video baseband signal.When selecting camera, the environment minimal illumination of monitored object should be higher than camera and require more than 10 times of minimal illumination.Black-and-white monitor monitored object minimal illumination should be less than 10lx, and colour picture monitor monitored object minimal illumination should be less than 50lx.Should adopt infrared light supply or other light sources under the zero illumination environment.Camera adopts motorized zoom lens, auto iris or electronic circle and electric platform, owing to will be adapted to the different weather environment, rainproof, dustproof, waterproof are provided with the remote control rain brush, and rear-view mirror device can be controlled the above-mentioned parts of camera.Consider that the car body command range is shorter, the control signal of the vision signal of camera 1 and microprocessor 3 can be with two coaxial cables.
In the present invention preferably implemented, camera 1 was selected the solid-state image pickup pipe for use, and its advantage is little, highly sensitive, the anti-strong illumination of inertia, little, the good uniformity of geometric distortion; Anti-impact is shaken, and does not have microphone effect; Small and light, the life-span is long.This camera can 1,2,3 selections everywhere be installed as shown in Figure 3 in the installation site of camera in Fig. 3.
In order to make night or dense fog, heavy rain, blizzard or the sandstorm weather can safe driving, in another enforcement of automobile backsight device of the present invention, camera 4 adopts infrared thermography, realize observing by means of the infrared radiation of target self emission, it finds target according to the temperature difference or thermal radiation difference between target and background or the target each several part.Infrared thermography can descend to work at the weather of mist, rain, snow, and ranging coverage is far away, can discern camouflage and disturbance rejection etc.Infrared thermography converts the radiation image of scenery to charge image, after information processing, converts visual picture to by display device.As the ANS/PAS-13 type, the technology that this device adopts comprises: be used for the high sensitivity cadmium telluride focal plane technology that race glass obtains distant object; Make lightweight, the high transmission rates binary optical parts of shell with senior plastics; The super large-scale integration of small size, low-power consumption (VLSI) electronic unit; The thermoelectric cooling module of noiseless action, high reliability, thumbnail size; Low-power consumption, high brightness LED (LED) show; Be applicable to all kinds of environment.Referring to Fig. 3, load onto this camera at 4 places, just can be under various boisterous environment safe driving.
It still is that black-and-white monitor should be consistent with the camera of device that electronic curtain is selected colour picture monitor.In the present invention preferably implements, adopt many pictures of Dan Ping technique of display.In of the present invention other are implemented, also can adopt the 2-4 screen to show.Electronic curtain can be installed in position as shown in Figure 7.Referring to Fig. 4, the benefit of Windshield top loaded type is to be used as original refracting plate in this position, does not increase to take up space.Referring to Fig. 5, electronic curtain places between the oil measurer and speed meter of original control panel, the formal electronization of light deflector that automobile is original, driver operation and control are all very convenient.
Referring to the schematic circuit diagram of the control motor of Fig. 8, it is suitable for the motor of electronic curtain 2 or camera 4 is controlled.Referring to image processing and the data transmission circuit schematic diagram of Fig. 6, wherein, chip U2 is a picture processing chip, and chip U3 is the data transmission chip.Referring to the microprocessor control principle figure of Fig. 7, wherein, chip U2 is microprocessor MCU, and this chip links to each other with camera 1, electronic curtain 2, memory device 10 and man machine operation interface 8 etc. respectively.Other circuit belong to traditional control circuit, do not give unnecessary details at this.
The following describes the working process of system.Referring to Fig. 9 and Figure 10, in automobile backsight device of the present invention, automatically measuring distance is handled by software.Processing method is that the graphicinformation of gathering is analyzed, and image is made Fuzzy Processing.Road in fuzzy influence will send hydropac very in short-term.Image DSP process chip 9 has the operating sequence that general image DSP handles, and seldom does explanation here.The operating sequence that microprocessor 3 is carried out about range data modeling and automatic range measurement.
About the range data modeling,, the steps include: referring to Fig. 9
1) width of collection various vehicles carries out the vehicle width normalisation, promptly obtains the width average of vehicle;
2) obtain the size of lens imaging pixel;
3) set particular alarm distance and picture imaging width data; Storage actual distance and picture imaging width data also proofreaied and correct processing; Obtain the distance and the relational expression of picture imaging width, i.e. modeling relational expression;
4) the particular alarm distance is carried out mark with picture imaging width data, adopt for alarming processing.
About automatic range measurement,, the steps include: referring to Figure 10
1) judges whether to calibrate, if then carry out 2); If not, then carry out 3); (step 101)
2) provide calibrated distance, button calibration and storage calibration data; (step 102-104)
3) enter distance and velocity measurement, obtained one time view data every 5 seconds; (step 105)
4) enter the road surface Fuzzy Processing, judge whether car is arranged in the image) if then carry out 5; If not, then report safety; (step 106-108)
5) enter car body or obstacle Fuzzy Processing, obtain range data and range data for the first time for the second time by the modeling relational expression; Obtain this car speed of travelling; With the second time range data deduct range data for the first time, divided by 5 seconds, add that this garage makes speed, obtain the moving velocity of back vehicle; (step 110)
6) judge whether to be safety distance or safety speed, if, the speed of range of a signal and back vehicle then; (step 112) then carries out 10 if not); (step 111)
7) dangerous distance or dangerous speed occur, give the alarm, the prompting emergency handling.(step 113)
Wherein, image processing comprises switching, writes down, resets, processes and duplicates etc.All vision signals are fixed on the monitoring device of appointment or sequential shows, also can carry out image blend, picture segmentation, subtitle superposition, record and playback, so that the accident that analyzing and processing took place.
Claims (7)
1. automobile backsight device, the image DSP process chip (9) and the electronic curtain (2) that comprise camera (1), be linked in sequence by vision cable with described camera (1), it is characterized in that: be connected to microprocessor (3) between described image DSP process chip (9) and the electronic curtain (2), described microprocessor (3) has the operating sequence about backsight and measurement, and this program is carried out following steps:
1) obtains the size of the width average and the imaging pixel thereof of various vehicles;
2) the picture imaging width data of setting particular alarm distance;
3) obtain the distance and the modeling relational expression of picture imaging width;
4) start measurement, obtain actual image data;
5) carry out backsight car body or obstacle Fuzzy Processing, obtain range data, Ben Che and back vehicle speed data by described modeling relational expression;
6) judge whether to be safety distance or safety speed, and show these data and provide corresponding alarm.
2. automobile backsight device according to claim 1 is characterized in that: described microprocessor (3) is connected to the position switch (11) that links to each other with reverse machinery, and the status information of described position switch (11) is connected to described microprocessor (3); Described electronic curtain (2) is equipped with the control motor that links to each other with its machinery, is connected to screen control circuit (4) between described microprocessor (3) and the described electronic curtain (2); The control information of the corresponding output of described microprocessor (3) is connected to the control motor of described electronic curtain (2) through described screen control circuit (4).
3. automobile backsight device according to claim 1 and 2, it is characterized in that: described camera (1) and/or described electronic curtain (2) respectively have more than 2, are connected to camera between described camera (1) and the described image DSP process chip (9) and select circuit (5); Be connected to screen between described electronic curtain (2) and the described screen control circuit (4) and select circuit (6).
4. automobile backsight device according to claim 3, it is characterized in that: described camera (1) is equipped with electric platform and/or motorized zoom lens and/or remote control rain brush, described camera is selected to be connected to camera control circuit (7) between circuit (5) and the described microprocessor (3), and the control information of described microprocessor (3) selects circuit (5) to be connected to described electric platform, motorized zoom lens and/or the remote control rain brush of corresponding camera (1) respectively through described camera control circuit (7) and camera.
5. automobile backsight device according to claim 4 is characterized in that: described microprocessor (3) is connected to the harddisk memory (10) and the man machine operation interface (8) of expansion.
6. automobile backsight device according to claim 5 is characterized in that: described camera (1) adopts solid-state image pickup pipe or infrared thermography.
7. automobile backsight device according to claim 6 is characterized in that: it is the infrared thermography of ANS/PAS-13 that described camera (1) adopts model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100427268A CN1292941C (en) | 2004-05-24 | 2004-05-24 | Rear-view device of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100427268A CN1292941C (en) | 2004-05-24 | 2004-05-24 | Rear-view device of automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1701991A true CN1701991A (en) | 2005-11-30 |
| CN1292941C CN1292941C (en) | 2007-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100427268A Expired - Fee Related CN1292941C (en) | 2004-05-24 | 2004-05-24 | Rear-view device of automobile |
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| Country | Link |
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| CN (1) | CN1292941C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187704B (en) * | 2007-12-17 | 2011-01-26 | 奇瑞汽车股份有限公司 | Reversing radar fuzzy controller |
| CN101585347B (en) * | 2008-05-21 | 2012-05-30 | 鸿富锦精密工业（深圳）有限公司 | Rear view system for automobile and automobile therewith |
| CN103057472A (en) * | 2012-12-26 | 2013-04-24 | 杨菊芳 | Car tail environment monitoring system |
| CN104149694A (en) * | 2014-08-18 | 2014-11-19 | 耿泽平 | Warning system for difference of radius between inner wheels of large vehicle |
| CN106553592A (en) * | 2015-09-24 | 2017-04-05 | 现代自动车株式会社 | For installing the structure of the post-positioned pick-up head of vehicle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6396397B1 (en) * | 1993-02-26 | 2002-05-28 | Donnelly Corporation | Vehicle imaging system with stereo imaging |
| FR2716723B1 (en) * | 1994-02-28 | 1996-04-26 | Matra Transport | Method and device for measuring the relative displacement between two components. |
| IL115971A (en) * | 1995-11-14 | 1997-01-10 | Razon Moshe | Computer stereo vision system and method |
| JP3337197B2 (en) * | 1997-04-04 | 2002-10-21 | 富士重工業株式会社 | Outside monitoring device |
| US6636258B2 (en) * | 2001-10-19 | 2003-10-21 | Ford Global Technologies, Llc | 360° vision system for a vehicle |
-
2004
- 2004-05-24 CN CNB2004100427268A patent/CN1292941C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187704B (en) * | 2007-12-17 | 2011-01-26 | 奇瑞汽车股份有限公司 | Reversing radar fuzzy controller |
| CN101585347B (en) * | 2008-05-21 | 2012-05-30 | 鸿富锦精密工业（深圳）有限公司 | Rear view system for automobile and automobile therewith |
| CN103057472A (en) * | 2012-12-26 | 2013-04-24 | 杨菊芳 | Car tail environment monitoring system |
| CN103057472B (en) * | 2012-12-26 | 2016-01-13 | 余姚市吉佳电器有限公司 | Automobile tail environment monitoring systems |
| CN104149694A (en) * | 2014-08-18 | 2014-11-19 | 耿泽平 | Warning system for difference of radius between inner wheels of large vehicle |
| CN106553592A (en) * | 2015-09-24 | 2017-04-05 | 现代自动车株式会社 | For installing the structure of the post-positioned pick-up head of vehicle |
| CN106553592B (en) * | 2015-09-24 | 2020-07-17 | 现代自动车株式会社 | Structure for mounting rear camera of vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1292941C (en) | 2007-01-03 |
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