Lane keeping method and system based on lane keeping assist function

Abstract

The present invention relates to a lane keeping method and system based on a lane keeping assist function. The method comprises the following steps: acquiring lane information sent by a detection device; judging whether a target vehicle deviates from its own lane according to the lane information; if the target vehicle deviates from its own lane, Then obtain the state information of the target vehicle and the state information of the comparison vehicle; according to the state information of the target vehicle and the state information of the comparison vehicle, judge whether the target vehicle and the comparison vehicle have a collision risk; if the target vehicle and the comparison vehicle have a collision risk, according to the target vehicle The vehicle state information and the comparison vehicle state information calculate the lateral acceleration of the target vehicle for collision avoidance; when the lateral acceleration is greater than or equal to the preset lateral acceleration, the lane keeping assist function is triggered to pull the target vehicle back to its own lane. By comparing the lateral acceleration with the preset lateral acceleration, it is judged whether to enable the lane keeping assist function, which avoids premature triggering and ensures steering safety.

Description

technical field [0001] The invention relates to the technical field of vehicle monitoring, in particular to a lane keeping method and system based on a lane keeping assist function. Background technique [0002] With the continuous development of the automobile industry and the continuous improvement of people's living standards, automobiles have gradually become a necessity for families. Traffic safety has increasingly become a focus of human society. In traffic accidents, most of them are caused by factors such as drivers misjudging the distance between vehicles or inattention. This has done a lot of harm. [0003] Aiming at this problem, the prior art has designed a technical solution to prevent vehicle collisions. Sensors are used to detect the contrasting vehicle in the adjacent lane. , the emergency lane keeping function is activated. The active safety system requests the intervention of the power steering system to pull the target vehicle back to its own lane, and ...

AI Technical Summary

Problems solved by technology

[0005] The existing emergency lane keeping function is generally activated according to the position of the target vehicle in the adjacent lane, the relative distance from the vehicle and the relative speed. This solution will lead to a higher frequency of undesired triggering of the function

For example, if the vehicle is going straight on the side close to the lane line, if there is traffic in the corresponding adjacent lane, the safety system is easily triggered. This situation will interfere with the driver's normal driving operation and affect the functional experience.

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