Vehicle intersection collision early warning method

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...

AI Technical Summary

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 inaccurate collision position, large deviation in estimated time of arrival at the intersection, and a large number of false alarms in the prior art

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