The invention discloses a crossroad left turn early warning anti-collision method based on V2X; the method comprises the steps: detecting the time tA when a vehicle A enters a crossroad in real time when a left turn light is turned on in the driving process of the vehicle A; when the time tA is smaller than a first set value, determining whether a vehicle B on a left-turn track exists or not, and if yes, carrying out left-turn early warning; when the time tA is smaller than a second set value, determining whether a left-turning or straight-going vehicle B on the crossroad exists or not, and if yes, carrying out left-turning early warning; and when the vehicle A enters the crossroad and the change of the course angle of the vehicle A relative to the change of the course angle of the vehicle A entering the crossroad is greater than a first set angle, judging whether a vehicle B of which the time tB for entering the crossroad is less than a first set value exists, and if so, carrying out left-turn early warning. Whether the vehicle collides or not is judged by determining the position of the vehicle and the position of the remote vehicle and calculating the time for reaching the crossroad, and then early warning is conducted, so that the collision occurrence rate is effectively reduced.

    本发明公开了一种基于V2X的十字路口左转预警防碰撞方法,车辆A行驶过程中,左转向灯打开时,实时检测车辆A进入十字路口的时间tA;当时间tA小于第一设定值时,判断是否存在左转轨迹上的车辆B,若存在,则进行左转预警;当时间tA小于第二设定值时,判断是否存在十字路口上左转或直行的车辆B,若存在,则进行左转预警;当车辆A进入十字路口,且行驶至至航向角相对于进入十字路口时的变化大于第一设定角度时,判断否存在进入十字路口的时间tB小于第一设定值的车辆B,若存在,则进行左转预警。本发明通过确定本车位置和远车位置及计算达到十字路口的时间判断辆车是否发生碰撞,进而进行预警,有效降低了碰撞发生率。


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    Title :

    Crossroad left turn early warning anti-collision method based on V2X


    Additional title:

    一种基于V2X的十字路口左转预警防碰撞方法


    Contributors:
    ZHAO YIMING (author) / XIA BIAO (author) / WU QIXUAN (author) / XU JIANYONG (author) / XU XINYI (author)

    Publication date :

    2021-11-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / H04W WIRELESS COMMUNICATION NETWORKS , Drahtlose Kommunikationsnetze



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