信号灯信息采集在车路协同系统中的设计及应用  

Design and Application of Signal Light Information Collection in Vehicle-infrastructure Cooperation

作　　者：王百里 WANG Baili(Shanghai Intelligent Transportation Co.,Ltd,Shanghai 200092,China)

机构地区：[1]上海智能交通有限公司,上海200092

出　　处：《交通与运输》2024年第4期42-46,共5页Traffic & Transportation

摘　　要：为弥补地图厂商、软件采集方式中存在的信号灯信息时延、可靠性不足的问题。基于对信号机的硬件采集方式,实时获取信号控制路口信号灯信息数据。根据不同相位时长,通过机器学习及滤波算法,实现路口信号配时方案的获取。针对智能网联车路协同系统对信号灯信息低时延、高可靠性的要求,以PTP高精度校时为基础,通过引入灯色及倒计时置信度参数,消除路口配时方案切换阶段信号灯倒计时跳变问题,提高SPAT消息的高可靠性,提升车路协同网联车辆的服务水平。选取智能网联车路协同路口进行场景测试,测试结果表明,该方法可实现对信号灯信息的实时高可靠读取,针对事件触发精度控制在50 ms±3 ms范围内,无倒计时跳变现场。满足智能网联车路协同系统应用中在SPAT消息要求的前提下,可结合MAP、RSI等消息数据赋能城市交通管理。To compensate for the delay and insufficient reliability of signal light information in map manufacturers and software collection methods.Based on the connection of traffic signal machine by cables,real-time acquisition of intersection signal light information data.According to different phase durations,obtain the intersection signal timing scheme through machine learning and filtering algorithms.In response to the requirements of low latency and high reliability of signal light information for intelligent networked vehicle-infrastructure cooperation systems,based on PTP high-precision timing,the problem of signal light countdown jumping during the switching phase of intersection timing schemes is eliminated by introducing light state confidence and countdown confidence,improving the high reliability of SPAT information and enhancing the service level of vehicleinfrastructure cooperation systems.Intelligent connected vehicle-infrastructure cooperation road intersections are selected for scenario testing.The test results show that the method proposed in the paper can achieve real-time and highly reliable reading of signal light information,with event triggering accuracy controlled within the range of 50 ms±3 ms and no countdown jump onsite.Under the premise of meeting the requirements for SPAT messages in the application of intelligent connected vehicle road collaboration system,urban traffic management can be empowered by combining message data such as MAP and RSI.

关 键 词：信号灯信息采集 SPAT 车路协同 置信度 

分 类 号：U491[交通运输工程—交通运输规划与管理]