The invention provides an in-tunnel traffic flow monitoring method and system, and the method comprises the steps: collecting the wireless signal intensity of a same mobile terminal in vehicles at different positions through employing a plurality of first wireless access nodes which are pre-arranged in a tunnel, and building a mobile terminal tunnel position fingerprint database; acquiring license plate number information of a vehicle and an MAC address of a mobile terminal in the vehicle, and establishing association between a license plate number and the MAC address of the mobile terminal in the vehicle; wireless signals of mobile terminals in a plurality of vehicles in the tunnel are collected in real time and preprocessed; determining the position of the mobile terminal according to position fingerprints at different positions in a mobile terminal tunnel position fingerprint database by using a position fingerprint positioning algorithm based on the preprocessed wireless signal of the mobile terminal; determining the position of the vehicle based on the position of the mobile terminal, and obtaining real-time vehicle distribution information and vehicle speed in the tunnel; and according to the real-time vehicle distribution information and the vehicle speed in the tunnel, determining the occurrence of traffic jam and emergencies in the tunnel.

    本发明提供了一种隧道内车流监测方法及系统,包括利用在隧道内预先布设好的多个第一无线访问节点采集不同位置处车辆内同一移动终端的无线信号强度,建立移动终端隧道位置指纹数据库;获取车辆的车牌号信息以及车辆内移动终端的MAC地址,建立车牌号与车辆内移动终端MAC地址的关联;实时采集隧道内多个车辆内移动终端的无线信号并进行预处理;基于预处理后的移动终端的无线信号,利用位置指纹定位算法,根据移动终端隧道位置指纹数据库中的不同位置处的位置指纹确定移动终端的位置;基于移动终端的位置确定车辆的位置,得到隧道内实时的车辆分布信息以及车辆速度;根据隧道内实时的车辆分布信息以及车辆速度判定隧道内交通堵塞以及突发事件的发生。


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    Title :

    Method and system for monitoring traffic flow in tunnel


    Additional title:

    一种隧道内车流监测方法及系统


    Contributors:
    TAN QINGLEI (author) / ZHANG YONGLIANG (author) / WANG CHUNYUAN (author) / YUE LIHONG (author) / SA ZHANYOU (author) / CHEN ZENGRONG (author) / SHAO BING (author) / WANG YUHUA (author) / MA CHIXIANG (author) / LIANG QINGHUA (author)

    Publication date :

    2022-07-12


    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



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