The invention discloses a rail transit emergency positioning method and system based on video recognition and IMU equipment. The method comprises the steps of initializing position information (including kilometer post data and IMU accumulated displacement values) of the IMU equipment, a camera module and a train; acquiring the moving posture of the current train through IMU equipment, and capturing a kilometer signboard image through a camera module; analyzing and processing the images captured by the camera module, and judging the running state of the current train; when the train is in an advancing state, acquiring a moving posture and an acceleration value of the current train by utilizing IMU equipment, and calculating an IMU accumulated displacement value of the train; and identifying kilometer post data from the images captured by the camera module, and correcting the position information of the train. The method has the advantages that video recognition, IMU equipment and the like are combined to form an emergency positioning mode with high independence, the method can be independent of a signal system of a vehicle, emergency positioning information is provided when a signal fault occurs, and train positioning can be realized without depending on any original vehicle-mounted sensor.

    本发明公开了一种基于视频识别和IMU设备的轨道交通应急定位方法和系统,该方法包含:初始化IMU设备、摄像模块和列车的位置信息(包含公里标数据+IMU累计位移值);通过IMU设备获取当前列车的运动姿态,通过摄像模块捕获公里标识牌图像;对摄像模块捕获的图像分析处理,判断当前列车的运行状态;当列车处于行进状态,利用IMU设备获取当前列车的运动姿态和加速度值,计算列车的IMU累计位移值;从摄像模块捕获的图像中识别公里标数据,校正列车的位置信息。其优点是:该方法将视频识别和IMU设备等相结合,形成一种独立性较强的应急定位方式,可独立于车辆的信号系统,在发生信号故障时提供应急定位信息,不依赖任何原有的车载传感器,即可实现列车的定位。


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    Title :

    Rail transit emergency positioning method and system based on video recognition and IMU equipment


    Additional title:

    基于视频识别和IMU设备的轨道交通应急定位方法和系统


    Contributors:
    DING LU (author) / CUI HONGZHOU (author) / JIANG YAODONG (author) / HAN HAILIANG (author)

    Publication date :

    2021-03-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC



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