The invention provides a method, a system and a device for detecting clock synchronization precision of roadside sensing equipment. The test machine synchronously receives test vehicle sensing data of the tested roadside sensing device, test vehicle video data shot by the test camera, and test vehicle reference positioning data and corresponding reference time recorded by the real-time dynamic positioning subsystem. The test machine obtains a critical point timestamp when the tested roadside sensing equipment senses the test vehicle for the first time and a corresponding critical point video frame in the video data, critical point positioning is determined based on the critical point video frame, and reference time corresponding to a point location corresponding to the reference positioning data is searched in the reference positioning data to serve as a standard timestamp; and the difference between the standard timestamp and the critical point timestamp is used as the clock synchronization precision deviation of the measured roadside sensing equipment. According to the invention, the clock synchronization precision test can be carried out under the condition that the program of the tested equipment is not changed.

    本发明提供一种路侧感知设备时钟同步精度检测方法、系统及装置,测试机同步接收被测路侧感知设备对试验车的感测数据、测试摄像机拍摄的试验车的视频数据以及实时动态定位子系统记录的试验车的基准定位数据和对应的基准时间,测试机获取被测路侧感知设备首次感测到试验车时的临界点时间戳和在视频数据中对应的临界点视频帧,基于临界点视频帧确定临界点定位,通过查找基准定位数据中与之相对应的点位对应的基准时间,作为标准时间戳,标准时间戳和临界点时间戳作差,作为被测路侧感知设备的时钟同步精度偏差。本发明可以在不更改被测设备程序的情况下进行时钟同步精度测试。


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    Titel :

    Method, system and device for detecting clock synchronization precision of roadside sensing equipment


    Weitere Titelangaben:

    一种路侧感知设备时钟同步精度检测方法、系统及装置


    Beteiligte:
    JI JINFENG (Autor:in) / SUN YUNLI (Autor:in) / LU JINGHUI (Autor:in) / ZHAO YONGSHENG (Autor:in) / HUANG YUN (Autor:in) / YOU XIN (Autor:in) / GAO WENBAO (Autor:in) / LU CHENG (Autor:in) / DENG XIAOHUI (Autor:in) / ZHAO XIN (Autor:in)

    Erscheinungsdatum :

    2023-07-25


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    H04J Multiplex-Verkehr , MULTIPLEX COMMUNICATION / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS