城市高速道路微波检测器RTMS的检测精度分析

Accuracy Analysis of RTMS on Urban Freeway

首先分析交通信息采集在城市高速道路监控系统中的重要作用 ,然后比较视频、环形线圈、微波等多种交通检测器的优缺点。根据目前北京二环、三环高速道路检测器的应用现状 ,选取RTMS的检测精度作为研究对象并在北京三环紫竹桥附近作了现场实验。实验数据分析结果表明 ,RTMS检测的各车道平均检测精度达到 95 %以上 ,可用于完成城市高速道路信息采集的任务。

This paper first analyzes the importance of traffic information collection in traffic control systems for urban freeways, then the advantages and shortcomings of various traffic sensors,such as induction loops, video sensors and microwave sensors,are discussed According to the current application situation of the traffic sensors used in Beijing urban freeways,the detection accuracy of RTMS is studied Based on the experiment in Green Bamboo Bridge in the third loop urban freeway,the results of the field data analysis show that the average detection accuracy of various lanes detected by RYMS is over 95 percents So RTMS is capable of gathering traffic information on urban freeways In the end, the measures to refine the experiment and the further work are suggested