CN110667331A - Vehicle impact mitigation system and control method thereof - Google Patents

Abstract

The invention discloses a vehicle impact relieving system, wherein an automobile is provided with an active suspension adjusting system, cameras for acquiring image information of two sides of the automobile are respectively arranged on two sides of the automobile, the cameras transmit acquired signals to an image controller, and the image controller outputs suspension adjusting signals to the active suspension adjusting system. The invention actively lifts the height of the suspension under the condition that collision cannot be avoided, so that a lateral vehicle can collide the firmer chassis and the metal plate part of the vehicle, and the life and property safety of a driver is ensured; the advantages of the active suspension are utilized to the maximum extent, the ADAS technology is fused, a solution for reducing the threat of the side collision of the vehicle to the driver is provided, and the driving safety is improved.

Description

Vehicle impact mitigation system and control method thereof

Technical Field

The invention relates to the field of automobile electronic control, in particular to an impact active mitigation technology based on a side camera.

Background

With the continuous development of automotive electronic technology, automobiles gradually become main transportation tools for people to go out, and have higher standard requirements on driving safety and comfort, so that intelligent driving of the automobiles is more and more widely regarded.

The camera has a long detection distance, can identify objects, has high and accurate target identification rate, and can well identify the information of surrounding vehicles and judge the relative positions of the surrounding vehicles and the vehicle and the surrounding real-time environment.

When collision happens, the current safety measures can only protect drivers and passengers through the air bags, the protection effect is single, and if the air bags or the sensors are in failure, the situation of protection failure can occur.

Disclosure of Invention

The invention aims to solve the technical problem of realizing a system for effectively protecting drivers and passengers during collision.

In order to achieve the purpose, the invention adopts the technical scheme that: a vehicle impact mitigation system is provided, wherein an automobile is provided with an active suspension adjusting system, cameras for acquiring image information of two sides of the automobile are respectively installed on two sides of the automobile, the cameras transmit acquired signals to an image controller, and the image controller outputs suspension adjusting signals to the active suspension adjusting system.

And the image controller outputs an alarm signal to the automobile instrument.

The camera of every side of car is equipped with two each cameras of every side, and is high definition digtal camera, the camera acquires car both sides vehicle and this car relative position information.

The image controller is connected with the CAN bus to acquire vehicle information.

The control method based on the vehicle impact mitigation system comprises the following steps:

step 1, performing system self-checking after a vehicle is ignited;

step 2, alarming if the self-checking is abnormal, and executing the next step if the self-checking is normal;

step 3, the cameras on the two sides acquire image signals in real time;

and 4, if the lateral vehicle and the vehicle have collision risks, lifting the lateral suspension.

The method for judging the collision risk between the lateral vehicle and the vehicle in the step 4 comprises the following steps:

1) obtaining information such as distance, angle, relative speed and the like between the lateral vehicle and the vehicle, and predicting the running track of the lateral vehicle;

2) and calculating the Time To Collision (TTC) between the lateral vehicle and the vehicle, and if the TTC is less than a set value, executing the next step and lifting the lateral suspension.

The method for judging the collision risk between the lateral vehicle and the vehicle in the step 4 comprises the following steps:

1) obtaining information such as the speed, the corner, the yaw angle and the like of the vehicle, and calculating the running track of the vehicle;

2) obtaining information such as distance, angle, relative speed and the like between the lateral vehicle and the vehicle, and predicting the running track of the lateral vehicle;

3) and calculating the Time To Collision (TTC) between the lateral vehicle and the vehicle, and if the TTC is less than a set value, executing the next step and lifting the lateral suspension.

The invention actively lifts the height of the suspension under the condition that collision cannot be avoided, so that a lateral vehicle can collide the firmer chassis and the metal plate part of the vehicle, and the life and property safety of a driver is ensured; the advantages of the active suspension are utilized to the maximum extent, the ADAS technology is fused, a solution for reducing the threat of the side collision of the vehicle to the driver is provided, and the driving safety is improved.

Drawings

The following is a brief description of the contents of each figure in the description of the present invention:

FIG. 1 is a schematic diagram of a vehicle impact mitigation system control method.

Detailed Description

The following description of the embodiments with reference to the drawings is provided to describe the embodiments of the present invention, and the embodiments of the present invention, such as the shapes and configurations of the components, the mutual positions and connection relationships of the components, the functions and working principles of the components, the manufacturing processes and the operation and use methods, etc., will be further described in detail to help those skilled in the art to more completely, accurately and deeply understand the inventive concept and technical solutions of the present invention.

The impact active mitigation system which is high in safety and meets the requirement of high real-time performance and is realized by adopting a camera technology aims to monitor the road condition at the side of a vehicle and the real-time road condition around the vehicle in real time in the static or low-speed running process of the vehicle, and when a controller finds that a vehicle coming from the side and the vehicle have collision risk and cannot avoid collision, the controller can send a signal to the vehicle to impact a firmer chassis and a metal plate part of the vehicle, so that the damage of the collision to the passengers of the vehicle is reduced.

In order to achieve the purpose, the system is composed of 2 high-definition cameras, an image controller, an alarm mechanism (instrument) and an actuating mechanism (active suspension), and the triggering state of the system is displayed through a DVD or the instrument.

The control method based on the vehicle impact relieving system comprises the following steps:

step 1, performing system self-checking after a vehicle is ignited;

step 2, alarming if the self-checking is abnormal, and executing the next step if the self-checking is normal;

step 3, the cameras on the two sides acquire image signals in real time;

and 4, if the lateral vehicle and the vehicle have collision risks, lifting the lateral suspension.

In order to improve the accuracy and reliability of the defense action triggering, reduce the complexity of system operation and make the system operation more stable and reliable, the following two processing methods can be adopted for the step 4:

example 1:

1) obtaining information such as distance, angle, relative speed and the like between the lateral vehicle and the vehicle, and predicting the running track of the lateral vehicle;

2) and calculating the Time To Collision (TTC) between the lateral vehicle and the vehicle, and if the TTC is less than a set value, executing the next step and lifting the lateral suspension.

Example 2:

1) obtaining information such as the speed, the corner, the yaw angle and the like of the vehicle, and calculating the running track of the vehicle;

2) obtaining information such as distance, angle, relative speed and the like between the lateral vehicle and the vehicle, and predicting the running track of the lateral vehicle;

3) and calculating the Time To Collision (TTC) between the lateral vehicle and the vehicle, and if the TTC is less than a set value, executing the next step and lifting the lateral suspension.

The technical scheme of the impact active link system comprises the following steps: and after the ignition switch is turned on, the system performs self-checking, and after the self-checking is free from problems, the system is activated. Under the condition that a vehicle coming from the side and the vehicle have collision risks and cannot avoid collision, the controller can send a signal to drive the height of the vehicle body on the collision side to be raised, so that the vehicle coming from the side can collide with a chassis and a metal plate part which are firmer, and the damage caused by traffic accidents is reduced to the maximum extent.

The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.

Claims (7)

1. The utility model provides a system is alleviated in vehicle striking, car are equipped with initiative suspension governing system which characterized in that: the two sides of the automobile are respectively provided with a camera for acquiring image information of the two sides of the automobile, the cameras transmit acquired signals to an image controller, and the image controller outputs suspension adjusting signals to an active suspension adjusting system.

2. The vehicle impact mitigation system of claim 1, wherein: and the image controller outputs an alarm signal to the automobile instrument.

3. The vehicle impact mitigation system according to claim 1 or 2, characterized in that: the camera of every side of car is equipped with two, and is high definition digtal camera, the camera acquires car both sides vehicle and this car relative position information.

4. The vehicle impact mitigation system of claim 3, wherein: the image controller is connected with the CAN bus to acquire vehicle information.

5. A control method based on the vehicle impact mitigation system according to any one of claims 1 to 4, characterized by:

step 1, performing system self-checking after a vehicle is ignited;

step 2, alarming if the self-checking is abnormal, and executing the next step if the self-checking is normal;

step 3, the cameras on the two sides acquire image signals in real time;

and 4, if the lateral vehicle and the vehicle have collision risks, lifting the lateral suspension.

6. The control method according to claim 5, characterized in that:

the method for judging the collision risk between the lateral vehicle and the vehicle in the step 4 comprises the following steps:

1) acquiring distance, angle and relative speed information of a lateral vehicle and a vehicle, and predicting the running track of the lateral vehicle;

2) and calculating the collision time of the lateral vehicle and the vehicle, and if the collision time is less than a set value, executing the next step and lifting the lateral suspension.

7. The control method according to claim 5, characterized in that:

the method for judging the collision risk between the lateral vehicle and the vehicle in the step 4 comprises the following steps:

1) obtaining information such as the speed, the corner, the yaw angle and the like of the vehicle, and calculating the running track of the vehicle;

2) acquiring distance, angle and relative speed information of a lateral vehicle and a vehicle, and predicting the running track of the lateral vehicle;

3) and calculating the collision time of the lateral vehicle and the vehicle, and if the collision time is less than a set value, executing the next step and lifting the lateral suspension.

Images