CN216467658U - Monitoring device for vehicle rear-end collision prevention based on millimeter wave radar - Google Patents
Monitoring device for vehicle rear-end collision prevention based on millimeter wave radar Download PDFInfo
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- CN216467658U CN216467658U CN202122994590.2U CN202122994590U CN216467658U CN 216467658 U CN216467658 U CN 216467658U CN 202122994590 U CN202122994590 U CN 202122994590U CN 216467658 U CN216467658 U CN 216467658U
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Abstract
The utility model discloses a monitoring device for preventing rear-end collision of a vehicle based on a millimeter wave radar. The system comprises a millimeter wave radar which is arranged at the rear part of a vehicle body and faces towards the rear part, detects and obtains the distance between the vehicle and a rear vehicle, and sends the distance to a vehicle body CAN network; the system comprises a vehicle body CAN network, a vehicle body CAN network and a vehicle device, wherein the vehicle body CAN network receives a distance from a millimeter wave radar and sends the distance to the vehicle device CAN network for master control; the system comprises a vehicle device main control unit, a steering control module and a vehicle device control unit, wherein the vehicle device main control unit receives a distance through a CAN network, generates steering control according to the distance and sends the steering control module; the emergency steering control system comprises a steering control module, and a steering wheel of a vehicle is controlled to carry out emergency steering according to steering control sent by a main control of a vehicle device so as to prevent rear-end collision. Aiming at the accident that the rear vehicle rear-end collision is neglected by the conventional driving safety device to cause the small vehicle at the middle position to be squeezed flat, the utility model adopts the measures of alarming and emergency steering to reduce or avoid the risks.
Description
Technical Field
The utility model relates to an automobile auxiliary control device, in particular to a monitoring device for preventing rear-end collision of a vehicle based on a millimeter wave radar.
Background
By analyzing road traffic accident data, the following disastrous accidents often occur: a small car is clamped in the middle of a certain cement mixer truck at the front and a heavy dump truck at the rear, and the heavy dump truck at the rear is out of control and accelerated due to misoperation or fatigue driving of a driver, so that the cars clamped at the front and the rear are extruded and deformed, passengers on the truck are extruded to be flat, and the casualties are heavy. At present, the loading rate of an AEB emergency braking device is gradually increased, the accident rate of front vehicle collision is well controlled, but the method is a blank field for preventing active collision of vehicles from behind. Because a general driver focuses attention on a front road and often neglects sudden impact from a rear vehicle, once the driver encounters impact of a rear high-speed running vehicle or impact of a rear heavy engineering vehicle, the driver looks like an accident of crash and death, and the tragedy of vehicle damage and death is easy to happen.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the background art, the utility model provides a monitoring device for preventing rear-end collision of a vehicle based on a millimeter wave radar, which effectively reduces the occurrence of collision accidents and protects the safety of personnel and property.
The technical scheme adopted by the utility model is as follows:
the system comprises a millimeter wave radar which is arranged at the rear part of a vehicle body and faces towards the rear part, detects and obtains the distance between the vehicle and a rear vehicle, and sends the distance to a vehicle body CAN network;
the system comprises a vehicle body CAN network, a vehicle body CAN network and a vehicle device, wherein the vehicle body CAN network receives a distance from a millimeter wave radar and sends the distance to the vehicle device CAN network for master control;
the system comprises a vehicle device main control unit, a steering control module and a vehicle device control unit, wherein the vehicle device main control unit receives a distance through a CAN network, generates steering control according to the distance and sends the steering control module;
the emergency steering control system comprises a steering control module, and a steering wheel of a vehicle is controlled to carry out emergency steering according to steering control sent by a main control of a vehicle device so as to prevent rear-end collision.
A millimeter wave radar is arranged on the side surface of the rear part of the vehicle body, and the millimeter wave radar detects the longitudinal distance between the vehicle and the rear vehicle towards the rear.
And a millimeter wave radar is arranged around the vehicle body.
The vehicle device main control generates prompt alarm information while generating steering control, displays the prompt alarm information on the main control console and reminds a driver to present the prompt information.
The utility model has the beneficial effects that:
the utility model effectively supplements the active anti-collision technology, and the device mainly solves the problem that the existing ADAS device mostly pays attention to the risk of forward anti-collision and ignores the risk of rear-end collision prevention from the rear, and particularly can avoid the vicious traffic accident of rear-end collision and collapse if a large vehicle is arranged in front of the rear-end collided vehicle and a large vehicle is arranged behind the rear for forward collision, if the side edge has a space.
The utility model effectively improves the safety of the vehicle when the collision accident is about to occur, and further protects the safety of passengers in the vehicle.
Drawings
Fig. 1 is a top view of a block diagram of an emergency steering apparatus based on millimeter wave radar;
in the figure: 1-4, a millimeter wave radar, 5, a device master control, 6, a steering control module, 7 and a CAN network.
Detailed Description
The utility model is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1, the apparatus includes:
the system comprises millimeter wave radars 1-4 which are arranged at the rear part of a vehicle body and face the rear part, detect and obtain the distance between the vehicle and the rear vehicle and send the distance to a vehicle body CAN network 7;
the system comprises a vehicle body CAN network 7, a vehicle device main control unit 5 and a vehicle body CAN network, wherein the vehicle body CAN network receives distances from millimeter wave radars 1-4 and transmits the distances to the vehicle device main control unit;
including vehicle device master control 5, receive the distance that millimeter wave radar gathered through the CAN network, judge according to the distance whether control emergency steering: if the distance is smaller than the threshold value, the safe and emergency steering is controlled, the steering control is generated and sent to the steering control module 6; otherwise, the safe emergency steering control is not carried out.
The device comprises a steering control module 6, which controls the steering wheel of the vehicle to steer emergently according to the steering control signal sent by the vehicle device main control 5 so as to prevent rear-end collision.
And the millimeter wave radar 1-4 is arranged on the rear side surface of the vehicle body, and the millimeter wave radar 1-4 detects the longitudinal distance between the vehicle and the rear vehicle towards the rear. The rear-end collision prevention device is arranged on the vehicle, and the longitudinal distance between the vehicle and the rear vehicle is detected by the millimeter wave radar 1 arranged behind the vehicle body of the vehicle.
In specific implementation, the longitudinal distance and the transverse distance between the vehicle and the front vehicle can be detected by a millimeter wave radar arranged in front of the vehicle body of the vehicle. The longitudinal distance is the distance in the direction of travel and the transverse distance is the distance in the direction perpendicular to the direction of travel.
The present invention is directed to a case where a host vehicle and a rear vehicle travel forward and backward along the same route, and the rear vehicle travels close to the host vehicle.
And the periphery of the vehicle body is respectively provided with a millimeter wave radar 1-4. Specifically, one millimeter wave radar 1-4 is arranged on each of the front and rear sides and the left and right sides of the vehicle body. If the distance collected at the two sides is smaller than the preset threshold value, no avoidable space exists, and an alarm prompt is sent out so that a driver can make a decision on an avoidance measure.
Further, the millimeter wave radars 1 to 4 installed around the vehicle recognize pedestrians, vehicles, or other obstacles, thereby monitoring surrounding vehicle conditions and transmitting obstacle information data to the vehicle apparatus main control 5 through the CAN network 7 in real time.
The implementation working process of the utility model is as follows:
if at a certain moment, the vehicle apparatus main control 5 finds that a collision accident will occur at the rear based on the vehicle condition data. In such an emergency, if the driver does not take effective measures due to cognitive delay or improper operation, the vehicle device main control 5 will take over the vehicle according to the distance obtained by the millimeter wave radar 1-4, and the device generates a steering control command and sends the steering control command to the steering control module 6 through the CAN network 7.
The steering control module 6 controls the steering wheel corner to perform emergency steering collision avoidance action according to a given control instruction, and then the rear vehicle device main control 5 reminds a driver to take over the steering wheel again to continue normal driving.
The utility model is mainly aimed at avoiding the difficulty that the driver does not notice the collision risk from the rear or realizes the collision risk from the rear through a rearview mirror but has no time to react in the emergency situation of the impending collision accident. The rear-end collision prevention device can firstly give an alarm in time for the rear-end collision risk, and secondly can change the lane in time for the vehicle condition that the front and the rear of the vehicle have large vehicles and have extrusion tendency so as to avoid the extruded accident.
Therefore, the utility model aims at the problem that the driving safety device neglects the rear-end collision risk from the rear vehicle at present, avoids the accident that the rear vehicle is crushed to be flat when the front and the rear of the small vehicle are both provided with large vehicles, and adopts the measures of alarming and emergency steering to reduce or avoid the risk.
Claims (3)
1. The utility model provides a monitoring device that is used for vehicle to prevent knocking into back based on millimeter wave radar which characterized in that:
the system comprises millimeter wave radars (1-4) which are arranged at the rear part of a vehicle body and face the rear part, detect and obtain the distance between the vehicle and the rear vehicle and send the distance to a vehicle body CAN network (7);
the system comprises a vehicle body CAN network (7), a vehicle body CAN network and a vehicle device main control system, wherein the vehicle body CAN network receives distances from millimeter wave radars (1-4) and sends the distances to the vehicle device main control system;
the system comprises a vehicle device main control (5), a steering control module (6) and a vehicle device control module, wherein the vehicle device main control (5) receives a distance through a CAN network, generates steering control according to the distance and sends the steering control module;
the steering control module (6) is used for controlling the steering wheel of the vehicle to carry out emergency steering according to the steering control sent by the vehicle device main control (5) so as to prevent rear-end collision.
2. The monitoring device for preventing the rear-end collision of the vehicle based on the millimeter wave radar as claimed in claim 1, wherein: a millimeter wave radar (1-4) is arranged on the side surface of the rear part of the vehicle body, and the millimeter wave radar (1-4) is used for detecting the longitudinal distance between the vehicle and the rear vehicle towards the rear.
3. The monitoring device for preventing the rear-end collision of the vehicle based on the millimeter wave radar as claimed in claim 1, wherein: and a millimeter wave radar (1-4) is arranged around the vehicle body respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122994590.2U CN216467658U (en) | 2021-11-30 | 2021-11-30 | Monitoring device for vehicle rear-end collision prevention based on millimeter wave radar |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122994590.2U CN216467658U (en) | 2021-11-30 | 2021-11-30 | Monitoring device for vehicle rear-end collision prevention based on millimeter wave radar |
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| CN216467658U true CN216467658U (en) | 2022-05-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114030434A (en) * | 2021-11-30 | 2022-02-11 | 浙江亚太机电股份有限公司 | Rear-end collision prevention system based on millimeter wave radar |
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2021
- 2021-11-30 CN CN202122994590.2U patent/CN216467658U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114030434A (en) * | 2021-11-30 | 2022-02-11 | 浙江亚太机电股份有限公司 | Rear-end collision prevention system based on millimeter wave radar |
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