CN105015414A - Rear-collision avoiding device and rear-collision avoiding method based on Doppler speed measuring radar - Google Patents
Rear-collision avoiding device and rear-collision avoiding method based on Doppler speed measuring radar Download PDFInfo
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- CN105015414A CN105015414A CN201510399528.5A CN201510399528A CN105015414A CN 105015414 A CN105015414 A CN 105015414A CN 201510399528 A CN201510399528 A CN 201510399528A CN 105015414 A CN105015414 A CN 105015414A
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Abstract
The invention provides a rear-collision avoiding device based on a Doppler speed measuring radar. The rear-collision avoiding device is low in cost and reliable in properties, can fully utilize the resources of an original vehicle, and has the characteristics of being low in development cost, simple in interfaces, easy to mount and debug and low in power consumption. The rear-collision avoiding device disclosed by the invention comprises a detecting unit and a control unit, wherein the detecting unit consists of a Doppler speed measuring radar, and the control unit consists of a processor and a CAN bus communicating interface of a whole vehicle; an output end of the detecting unit is connected with an input end of the processor, the processor is connected with the CAN bus communicating interface of the whole vehicle, and the Doppler speed measuring radar is arranged at the middle position of the rear part of the vehicle. According to the rear-collision avoiding device disclosed by the invention, the relative velocity between a coming vehicle and the vehicle in a set range behind the vehicle is measured through the Doppler speed measuring radar which is arranged at the middle position of the rear part of the vehicle and low in cost, the speed of the vehicle can be obtained cooperating with the processor through CAN bus communications, a pre-alarm function for various collisions can be realized, and then an acousto-optic system of the original vehicle is connected through the CAN bus communications, so that the alarm is realized, and the active safety is improved.
Description
Technical field
The present invention relates to vehicle active safety protective device, be specifically related to a kind of rear-end device based on Doppler speed radar and anti-overtaking-collision method.
Background technology
Now to vehicle collision avoidance early warning, the method for detection has two kinds, and a kind of is the distance detecting rear car amount and this car with sensor, and another kind is the distance with radar equipment detection back car and this car, and the former cost is low, but reliability is low; The latter's cost is high, is difficult to again promote the use of on low and middle-grade car.
Summary of the invention
Primary and foremost purpose of the present invention is that to propose a kind of cost low, the rear-end device based on Doppler speed radar of dependable performance, and this device can make full use of former carfare source, has the advantages that developing low-cost, interface are simple, be easy to Installation and Debugging, low-power consumption.
Rear-end device based on Doppler speed radar of the present invention, comprise the detecting unit be made up of Doppler speed radar and the control unit be made up of treater and car load CAN communication interface, the mouth of described detecting unit is connected with the input end of described treater, described treater is connected with car load CAN communication interface, and described Doppler speed radar is arranged on the midway location in fort after car.
Rear-end device based on Doppler speed radar of the present invention, send a car in setting range after measuring car by the Doppler speed radar of the low cost of the midway location in fort after being arranged on car and the relative velocity of this car, coordinate this car speed of a motor vehicle that treater is obtained by CAN communication, multiple anti-collision warning function can be realized, then the acousto-optic system utilizing CAN communication to connect former car realizes reporting to the police, and improves active safety.
Further, the antenna beam width angle value of described Doppler speed radar with the body width at car door place during car door opening for body width benchmark.So just can realize enabling early warning when vehicle stationary, namely when car door opening, Doppler speed radar probe vehicles back car, comprises corresponding the sending a car in car door opening tail gate position, to evade risk of collision when car door is opened suddenly.
Specifically, described Doppler speed radar is arranged on automobile rear bumper medium position, stops and convenient installation to avoid radar signal as far as possible.
Further, the element of described Doppler speed radar adopts integrated design, to adapt to vibration environment when being arranged on bumper/spoiler.
Another object of the present invention is to provide a kind of anti-overtaking-collision method based on Doppler speed radar, comprises the following steps:
A, measure in setting range by the Doppler speed radar of the midway location in fort after being arranged on car, the relative velocity between rear car and this car;
B, treater read the relative velocity of step A and the speed of this car simultaneously, judge whether to there is risk of collision;
If C exists risk of collision, then treater sends alerting signal by the acousto-optic system of vehicle control unit controls car load.
Anti-overtaking-collision method based on Doppler speed radar provided by the invention, the Doppler speed radar seat detecting unit of the midway location in fort after what use cost was low be arranged on car, read the speed of relative velocity that Doppler speed radar measures and this car by treater simultaneously, to judge whether whether there is risk of collision, again by using the acousto-optic system of former car as warning indicating member, former carfare source can be made full use of, improve car load active safety.
Further, the setting range of described step A with the body width at car door place during car door opening for body width benchmark.So just can realize enabling early warning when vehicle stationary, namely when car door opening, Doppler speed radar probe vehicles back car, comprises corresponding the sending a car in car door opening tail gate position, to evade risk of collision when car door is opened suddenly.
Further, the alerting signal of described step C comprises the chimes of doom signal of collision car door when preventing from opening the door, the chimes of doom signal of collision when preventing automobile from advancing and instrument carrier panel alarm lamp, for pointing out the automobile tail stoplight stop lamp quick-flashing light signal of car rear-end risk.Anti-overtaking-collision method based on Doppler speed radar of the present invention, treater reads the speed of relative velocity that Doppler speed radar measures and this car simultaneously, multiple warning function can be realized, then by corresponding alarm, this car chaufeur and rear car chaufeur can be pointed out simultaneously to note risk of collision, improve active safety.
Accompanying drawing explanation
Fig. 1 is system architecture schematic diagram of the present invention.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, the effect and principle of work etc. of the specific embodiment of the present invention as the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part are described in further detail.
As Fig. 1, rear-end device based on Doppler speed radar of the present invention, comprise the detecting unit be made up of Doppler speed radar and the control unit be made up of treater and car load CAN communication interface, the mouth of detecting unit is connected with the input end of treater, treater is connected with car load CAN communication interface, and Doppler speed radar is arranged on the midway location in fort after car.
The principle of work of the rear-end device based on Doppler speed radar of the present invention is: send a car in setting range after measuring car by the Doppler speed radar of the low cost of the midway location in fort after being arranged on car and the relative velocity of this car, coordinate this car speed of a motor vehicle that treater is obtained by CAN communication, multiple anti-collision warning function can be realized, then the acousto-optic system utilizing CAN communication to connect former car realizes reporting to the police, and improves active safety.
As preferred embodiment, the antenna beam width angle value of Doppler speed radar with the body width at car door place during car door opening for body width benchmark.So just can realize enabling early warning when vehicle stationary, namely when car door opening, Doppler speed radar probe vehicles back car, comprises corresponding the sending a car in car door opening tail gate position, to evade risk of collision when car door is opened suddenly.Doppler speed radar is arranged on automobile rear bumper medium position, stops and convenient installation to avoid radar signal as far as possible.The element of Doppler speed radar adopts integrated design, to adapt to vibration environment when being arranged on bumper/spoiler.
The present invention also provides a kind of anti-overtaking-collision method based on Doppler speed radar, comprises the following steps:
A, measure in setting range by the Doppler speed radar of the midway location in fort after being arranged on car, the relative velocity between rear car and this car;
B, treater read the relative velocity of step A and the speed of this car simultaneously, judge whether to there is risk of collision;
If C exists risk of collision, then treater sends alerting signal by the acousto-optic system of vehicle control unit controls car load.
Anti-overtaking-collision method based on Doppler speed radar provided by the invention, the Doppler speed radar seat detecting unit of the midway location in fort after what use cost was low be arranged on car, read the speed of relative velocity that Doppler speed radar measures and this car by treater simultaneously, to judge whether whether there is risk of collision, again by using the acousto-optic system of former car as warning indicating member, former carfare source can be made full use of, improve car load active safety.Wherein, the setting range of step A with the body width at car door place during car door opening for body width benchmark.The alerting signal of step C comprises the chimes of doom signal of collision car door when preventing from opening the door, the chimes of doom signal of collision when preventing automobile from advancing and instrument carrier panel alarm lamp, for pointing out the automobile tail stoplight stop lamp quick-flashing light signal of car rear-end risk, with the multiple different anti-collision warning function of correspondence.
Claims (7)
1. the rear-end device based on Doppler speed radar, it is characterized in that comprising the detecting unit be made up of Doppler speed radar and the control unit be made up of treater and car load CAN communication interface, the mouth of described detecting unit is connected with the input end of described treater, described treater is connected with car load CAN communication interface, and described Doppler speed radar is arranged on the midway location in fort after car.
2. the rear-end device based on Doppler speed radar according to claim 1, is characterized in that the antenna beam width angle value of described Doppler speed radar with the body width at car door place during car door opening for body width benchmark.
3. the rear-end device based on Doppler speed radar according to claim 1, is characterized in that described Doppler speed radar is arranged on automobile rear bumper medium position.
4. the rear-end device based on Doppler speed radar according to claim 1, is characterized in that the element of described Doppler speed radar adopts integrated design.
5., based on an anti-overtaking-collision method for Doppler speed radar, it is characterized in that comprising the following steps:
A, measure in setting range by the Doppler speed radar of the midway location in fort after being arranged on car, the relative velocity between rear car and this car;
B, treater read the relative velocity of step A and the speed of this car simultaneously, judge whether to there is risk of collision;
If C exists risk of collision, then treater sends alerting signal by the acousto-optic system of vehicle control unit controls car load.
6. the anti-overtaking-collision method based on Doppler speed radar according to claim 5, is characterized in that the setting range of described step A with the body width at car door place during car door opening for body width benchmark.
7. the anti-overtaking-collision method based on Doppler speed radar according to claim 5, is characterized in that the alerting signal of described step C comprises the chimes of doom signal of collision car door when preventing from opening the door, the chimes of doom signal of collision when preventing automobile from advancing and instrument carrier panel alarm lamp, for pointing out the automobile tail stoplight stop lamp quick-flashing light signal of car rear-end risk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510399528.5A CN105015414A (en) | 2015-07-09 | 2015-07-09 | Rear-collision avoiding device and rear-collision avoiding method based on Doppler speed measuring radar |
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| CN201510399528.5A CN105015414A (en) | 2015-07-09 | 2015-07-09 | Rear-collision avoiding device and rear-collision avoiding method based on Doppler speed measuring radar |
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| CN105015414A true CN105015414A (en) | 2015-11-04 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201291826Y (en) * | 2008-08-29 | 2009-08-19 | 湖南工程学院 | Automobile anticollision apparatus based on Doppler effect |
| KR101062713B1 (en) * | 2004-10-21 | 2011-09-06 | 주식회사 만도 | Vehicle anti-collision system |
| CN103198716A (en) * | 2013-04-08 | 2013-07-10 | 北京汽车股份有限公司 | Pre-warning system for preventing tailgating of rear vehicle |
| CN204196715U (en) * | 2014-11-04 | 2015-03-11 | 李志飞 | Car door opening safe early warning ancillary system |
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2015
- 2015-07-09 CN CN201510399528.5A patent/CN105015414A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101062713B1 (en) * | 2004-10-21 | 2011-09-06 | 주식회사 만도 | Vehicle anti-collision system |
| CN201291826Y (en) * | 2008-08-29 | 2009-08-19 | 湖南工程学院 | Automobile anticollision apparatus based on Doppler effect |
| CN103198716A (en) * | 2013-04-08 | 2013-07-10 | 北京汽车股份有限公司 | Pre-warning system for preventing tailgating of rear vehicle |
| CN204196715U (en) * | 2014-11-04 | 2015-03-11 | 李志飞 | Car door opening safe early warning ancillary system |
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Application publication date: 20151104 |
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