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Vehicle collision detection method and vehicle control system

A technology of a vehicle control system and a detection method, which is applied to control devices, vehicle components, vehicle safety arrangements, etc., can solve problems such as misjudgments as collision accidents, and achieve the effects of eliminating misjudgments, improving accuracy, and reducing misjudgments

Active Publication Date: 2019-01-29
GUANGZHOU XIAOPENG MOTORS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has been found in practice that known collision detection methods are likely to misjudge the driver's active emergency braking (sudden braking) as a collision accident

Method used

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  • Vehicle collision detection method and vehicle control system
  • Vehicle collision detection method and vehicle control system
  • Vehicle collision detection method and vehicle control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] see figure 1 , figure 1 It is a schematic flowchart of a vehicle collision detection method disclosed in an embodiment of the present invention. Such as figure 1 As shown, the vehicle collision detection method may include the following steps:

[0063] 101. The vehicle control system detects the relative distance between the vehicle and the obstacle.

[0064] In the embodiment of the present invention, the vehicle control system can specifically detect the relative distance between the vehicle and the obstacle through the measurement data of the ranging sensor and / or the camera. Wherein, the ranging sensor may be an ultrasonic ranging sensor, a laser ranging sensor, an infrared ranging sensor, a microwave ranging sensor, etc., which are not limited in this embodiment of the present invention. When the vehicle control system detects the relative distance between the vehicle and the obstacle through the ranging sensor, the distance data fed back by the ranging sensor ...

Embodiment 2

[0076] see figure 2 , figure 2 It is a schematic flowchart of another vehicle collision detection method disclosed in the embodiment of the present invention. Such as figure 2 As shown, the vehicle collision detection method may include the following steps:

[0077] 201. The vehicle control system detects the relative distance between the vehicle and the obstacle, and judges whether the relative distance is smaller than a preset distance threshold. If yes, execute step 202. If not, end the process.

[0078] 202. The vehicle control system acquires a longitudinal acceleration component, a lateral acceleration component, and a vertical acceleration component of the vehicle within a first specified time period.

[0079] In the embodiment of the present invention, it can be specifically obtained through the measurement data of the three-axis accelerometer installed on the vehicle. The three-axis accelerometer can obtain the X-axis (longitudinal), Y-axis (horizontal) and Z-ax...

Embodiment 3

[0090] see image 3 , image 3 It is another vehicle collision detection method disclosed in the embodiment of the present invention. Such as image 3 As shown, the vehicle collision detection method may include the following steps:

[0091] 301. The vehicle control system judges whether the distance data fed back by the ranging sensor of the vehicle is equal to the lower limit of the ranging range of the ranging sensor. If yes, execute steps 302 to 303. If not and the first distance is greater than the lower limit of the ranging range, Execute step 304 .

[0092] In the embodiment of the present invention, taking the ultrasonic ranging sensor as an example, the lower limit of the ranging range of some ultrasonic sensors is 26cm (according to the difference in sensor performance, the specific value of the lower limit of the ranging range is different), when the distance between the vehicle and the obstacle When the actual distance is less than 26cm, the distance data retur...

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PUM

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Abstract

The invention discloses a vehicle collision detection method and a vehicle control system. The vehicle collision detection method comprises the steps: the relative distance between a vehicle and an obstacle is detected; whether the relative distance is smaller than a preset distance threshold value or not is judged, and if yes, the longitudinal acceleration component and the transverse acceleration component of the vehicle within the first specified time length are obtained; the first variance of the longitudinal acceleration component and the second variance of the transverse acceleration component are determined; and if the first variance exceeds a preset first threshold value or the second variance exceeds a preset second threshold value, it is determined that a collision accident of the vehicle occurs. By implementing the vehicle collision detection method, when it is judged that the vehicle and the obstacle are excessively close, collision detection is conducted through the variances of the acceleration components in the horizontal direction of the vehicle, thus misjudgment can be reduced, and the accuracy rate of vehicle collision detection is increased.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a vehicle collision detection method and a vehicle control system. Background technique [0002] At present, some cars can automatically detect collision accidents, and perform corresponding control operations (such as ejecting airbags) after detecting collision accidents. Known collision detection methods generally use the angular velocity and acceleration of the vehicle in three-dimensional space measured by an inertial measurement unit (Inertial Measurement Unit, IMU) of the vehicle for detection. However, it has been found in practice that known collision detection methods easily misjudge the driver's active emergency braking (sudden braking) as a collision accident. Contents of the invention [0003] The embodiment of the invention discloses a vehicle collision detection method and a vehicle control system, which can reduce misjudgments and improve the accuracy of vehicl...

Claims

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Application Information

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IPC IPC(8): B60W40/107B60W40/109
CPCB60W40/107B60W40/109B60W2520/105B60W2520/125B60W2554/00B60W2030/082B60W50/14B60W2050/146B60W2050/143B60W2554/802B60W2554/801B60W2420/54B60W2050/002B60W2540/215B62D41/00B60R21/015B60W2050/001B60W2420/403B60K35/28B60K2360/176
Inventor 黄亚刘中元李红军赖健明蒋少峰潘力澜
Owner GUANGZHOU XIAOPENG MOTORS TECH CO LTD
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