Vehicle intersection collision early warning method

A technology of collision warning and intersection, which is applied in the traffic control system, anti-collision system, and traffic control system of road vehicles, can solve the problems of large deviation in estimated arrival time at intersections, inaccurate collision positions, etc., and achieve false positives. Reduce the situation, improve the calculation accuracy, and the effect of good calculation accuracy

Active Publication Date: 2016-10-12
CHONGQING CHANGAN AUTOMOBILE CO LTD
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Problems solved by technology

[0006] The purpose of the present invention is to provide a vehicle intersection collision warning method, which can solve the problems of inac

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  • Vehicle intersection collision early warning method
  • Vehicle intersection collision early warning method

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] A vehicle intersection collision warning method, which first collects the position, heading, trajectory radius, speed and acceleration information of the vehicle 13 and the target vehicle 14, and then sends the information to In the central processing unit 22 of the vehicle 13. The central processing unit 22 calculates the driving trajectory and the collision point 11 of the host vehicle 13 and the target vehicle 14 according to the position, heading and trajectory radius information. Such as figure 1 As shown, the host vehicle 13 and the target vehicle 14 are located on the road at the intersection, and the collision area 12 with the radius value R is calculated with the collision point 11 as the center. After the calculation and processing by the central processing unit 22, the result is obtained to determine whether the time of the vehicle 1...

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Abstract

The invention relates to a vehicle intersection collision early warning method. Firstly, the position, direction, track radius, speed and acceleration information of a local vehicle and a target vehicle is collected; the driving trajectories and the collision point of the local vehicle and the target vehicle are calculated according to the position, direction and track radius information, and a collision area is calculated according to the collision point; whether the time from driving into the area to driving out of the collision area of the local vehicle and the time from driving into the collision area to driving out of the collision area of the target vehicle are overlapped or not is judged, when the two times are overlapped, the time T needed by the driving into the collision area of the local vehicle with a current speed and acceleration is calculated, and if the time T is smaller than a set value, the early warning result of alarm is executed. According to the scheme, the problems that a collision position is not accurate, the estimated time deviation of arriving an intersection is large and a lot of wrong alarms exist in the prior art are solved.

Description

technical field [0001] The invention relates to the field of road traffic safety, in particular to a vehicle intersection collision warning method. Background technique [0002] Most of the existing vehicle intersection anti-collision systems or methods are based on simple intersections and time differences to determine whether there is a risk of collision, without considering the actual driving state of the vehicle, resulting in poor calculation accuracy. It is not applicable to the situation of atypical intersections, and there are cases of false positives. [0003] For example, CN 105118329 A discloses a method for resolving traffic conflicts between two vehicles at an unsignalized intersection. The specific idea is: first collect the information of the two vehicles, and predict whether the two vehicles conflict at the intersection according to the time when the two vehicles arrive at the intersection; Establish a hierarchical analysis structure to determine the priority...

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Application Information

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IPC IPC(8): G08G1/16
CPCG08G1/166
Inventor 刘鑫李增文张盼蒲果牛雷
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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