Vehicle identification system for electric toll collection system
    123.
    发明授权
    Vehicle identification system for electric toll collection system 失效
    电收费系统车辆识别系统

    公开(公告)号:US5969641A

    公开(公告)日:1999-10-19

    申请号:US827692

    申请日:1997-04-10

    CPC分类号: G07B15/063 G08G1/017

    摘要: A plurality of antennas receives radio wave transmitted from a vehicle which comes in a toll collection area. Each antenna has at least three antenna elements, and the antennas are disposed in the horizontal direction and vertical direction. The signal analyzer analyzes the ID signal included in the received radio wave to identify the vehicle. The direction detector measures the direction of arrival (DOA) of radio wave received by two antennas selected by the antenna selector by way of two-dimensional interferometry principle in terms of the directional angle and depression angle. The location detector calculates the location of the vehicle in the horizontal direction and the height in the vertical direction of the vehicle as a location information based on the DOA of the radio wave measured by the direction detector. The vehicle tracking unit generates the locus data of the vehicle based on the location information calculated by the location detector and the information for identifying the vehicle analyzed by the signal analyzer. On the other hand, the video camera takes a picture of the vehicle which comes in the toll collection area to obtain the picture data. The data correlation unit judges whether the vehicle is a violator vehicle by correlating the picture data and locus data. The controller registers the locus data and picture data of the vehicle if the vehicle is a violator vehicle. On the other hand, the controller collects a prescribed toll from the vehicle if the vehicle is not a violator vehicle.

    摘要翻译: 多个天线接收从进入收费区域的车辆发送的无线电波。 每个天线具有至少三个天线元件,并且天线设置在水平方向和垂直方向上。 信号分析仪分析接收的无线电波中包括的ID信号以识别车辆。 方向检测器通过二维干涉测量原理在方向角和俯角方面测量由天线选择器选择的两个天线接收的无线电波的到达方向(DOA)。 位置检测器基于由方向检测器测量的无线电波的DOA,计算车辆在水平方向上的位置和车辆垂直方向上的高度作为位置信息。 车辆跟踪单元基于由位置检测器计算的位置信息和用于识别由信号分析器分析的车辆的信息来生成车辆的轨迹数据。 另一方面,摄像机拍摄来自收费区域的车辆的图像,以获得图像数据。 数据相关单元通过使图像数据和轨迹数据相关来判断车辆是否是违规车辆。 如果车辆是违规车辆,则控制器登记车辆的轨迹数据和图像数据。 另一方面,如果车辆不是违规车辆,则控制器从车辆收取规定的费用。