Active-lane-changing collision-avoidance control method and device based on vehicle-vehicle coordination

Abstract

The invention provides an active-lane-changing collision-avoidance control method and device based on vehicle-vehicle coordination and belongs to the technical field of intelligent traffic / automobile active safety control. The active-lane-changing collision-avoidance control device comprises a vehicle-vehicle communication unit, a distance measuring sensor, a three-axis acceleration sensor, a vehicle speed sensor, an electronic control unit, an ESP control unit, a driver auxiliary operation unit, a tail lamp control unit and a vehicle inner warning unit. According to the active-lane-changing collision-avoidance control method, surrounding vehicle information is obtained through the vehicle-vehicle communication unit, the safety distance between a vehicle and a front vehicle on the same lane and the safety distance between the vehicle and a front vehicle on the side lane are determined; then, whether the vehicle meets the coordinated lane-changing collision-avoidance requirement is judged, if yes, the expectant lateral and the longitudinal acceleration of the vehicle is calculated, and control over the direction and the speed of the vehicle are conducted, and if not, lane-changing danger warning is conducted. By the adoption of the active-lane-changing collision-avoidance control method and device based on vehicle-vehicle coordination, active-lane-changing collision-avoidance control is achieved, driver safety accidents caused by emergency brake and rear-end collision accidents caused by emergency brake can be avoided, manual operation errors are avoided, and the safety of driving the vehicle is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of intelligent traffic / automobile active safety control, and specifically relates to a method and device for actively changing lanes and avoiding collisions based on vehicle-vehicle coordination to avoid driver safety accidents and rear-end collision accidents caused by emergency braking during vehicle driving . Background technique [0002] From the general situation of the development of active collision avoidance control systems at home and abroad, it can be seen that the current products related to active collision avoidance systems are facing the market, but these collision avoidance systems are basically longitudinal dynamic intervention collision avoidance systems, and such systems will only be Intervention to generate longitudinal power, perform power intervention on the original lane of the vehicle, send out auditory, visual and tactile warning signals when danger is about to occur, and perform dece...

AI Technical Summary

Problems solved by technology

[0010] (1) For the calculation method of safe distance between vehicles, it is calculated based on two kinds of information, the distance between vehicles and the speed of the vehicle. The amount of information is single, and the calculation method is monotonous. A more suitable calculation method for safe vehicle distance;

[0011] (2) For the lane-changing collision avoidance algorithm, there is no pre-planning of the safe driving trajectory, and no operation prompts and auxiliary controls are given to the driver, so as to prevent the driver from causing safety hazards such as misoperation and inattention when he is in a hurry;

[0012] (3) For the lane change and collision avoidance device, the core control unit is not equipped with a vehicle-to-vehicle communication unit to obtain more sufficient information for reliable and stable steering control, and the additional lane change control device is not compatible with the vehicle ESP (Electronic Stability Program, vehicle body electronic stability system) system control unit interference problem

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