V2X技术在城市交叉口防碰撞预警中的应用

Application of V2X Technology in Collision Warning at Urban Intersection

为有效解决城市交叉口车辆之间存在的遮挡严重、信息获取以及信息交互时延过大等问题,在城市交叉口防碰撞预警中引入LTE-V2X技术,提出一种基于V2X技术的城市交叉口协助式防碰撞预警算法。该算法既能保证OBU获取其他OBU的数据信息,也能实时接收RSU推送的红绿灯相位定时信息、地图信息和感知到周围目标物的状态信息,从而实现车、路、人和基础设施的数据共享。仿真结果表明,车辆在低时延内能获取更多车辆的准确运动状态信息,提升了车辆防碰撞预警的准确度,从而有效地避免交叉口碰撞的风险。

Road intersection is a high incidence area of traffic accidents.LTE-V2X technology is introduced into collision warning of urban intersection,and an assisted anti-collision warning algorithm in urban intersection based on v2x technology is proposed,which effectively solves the problems of information acquisition,serious occlusion and large information interaction delay between vehicles.The algorithm not only ensures that OBU can obtain other OBU data information,but also can receive real-time traffic light phase and timing information,map information and the status information of surrounding vehicles pushed by RSU,so as to share the data information of vehicles,roads,people and infrastructure.The simulation results show that the vehicles can not only obtain more accurate motion state information of vehicles in low time delay,but also improve the accuracy of collision warning and effectively avoid the risk of intersection collision,which proves the effectiveness of the application.