Control method for avoiding collision during emergent lane changing of vehicle in high-speed state

Abstract

The invention discloses a control method for avoiding collision during emergent lane changing of a vehicle in a high-speed state and belongs to the technical field of vehicle active safety. A detecting unit obtains a road adhesion coefficient as well as the speeds, distance and accelerated speeds of the vehicle and a vehicle on an adjacent lane through a GPS / INS, millimeter-wave radar, a high-definition camera, a speed sensor and an accelerated speed sensor. A processing unit judges whether an alarm is given or an emergent lane changing collision avoiding intervention measure is taken under the collision risk situation according to the data of the detecting unit. An alarm unit carries out voice prompting and carries out displaying through a vehicle-mounted terminal. An executing unit achieves lane changing collision avoiding intervention through a braking controller and a steering controller. According to the method, risk early warning and lane changing prompting are achieved, under the situation that accidents cannot be avoided through emergent braking, the lane changing direction is judged according to the speed, accelerated speed and distance of the vehicle on the adjacent lane, an emergent lane changing trajectory is planned reasonably, and thus the purpose of avoiding accidents by avoiding collision during emergent lane changing is realized.

Description

technical field [0001] The invention belongs to the technical field of vehicle active safety, and in particular relates to a control method for emergency lane change and collision avoidance of a vehicle in a high-speed state. Background technique [0002] With the continuous increase of the number of cars in the world, the number of car traffic accidents is increasing year by year, and the problem of traffic safety has become a major public hazard in modern society. According to statistics, in all traffic accidents, automobile collision accidents (comprising vehicle-vehicle collisions and car-fixed object collisions) are the main forms, accounting for 60% to 70% of traffic accidents. Most of the car collision accidents are caused by factors such as driving too fast, the distance between vehicles is too small, and the brakes are not timely. Most of the collision avoidance control systems studied at present adopt the method of emergency braking, which will increase the safety...

AI Technical Summary

Problems solved by technology

[0003] At present, there are some active collision avoidance technologies, which can automatically start emergency braking and emergency lane change avoidance intervention measures through dynamic intervention in emergency situations, but there are the following disadvantages. Judging the avoidance direction is only based on the radar detection of the vehicle and the vehicle in front. The distance between vehicles in adjacent lanes does not take into account the speed and acceleration of the vehicle in front of the vehicle in the adjacent lane, so the detection content is less, and the avoidance path planning is unreasonable. At the same time, it cannot guarantee the maximum safety of vehicles in dangerous conditions. limited collision avoidance

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