The invention relates to a vehicle-mounted video line fault field diagnosis method and system. The method comprises the steps that S01, a signal generator transmits a signal; s02, when the transmitted signals pass through the transmission link, for example, impedance change occurs in the transmission link, part of the transmitted signals are reflected back, and the reflected signals are reflected signals; s03, the sampling oscilloscope samples the reflected signal; s04, the MCU processes the reflected signal sampled by the sampling oscilloscope, and calculates the position length of an impedance difference point based on the time difference between the transmitted signal and the reflected signal; and S05, the MCU judges whether the wire loss and the connector loss are smaller than or equal to the corresponding calibration values, and further obtains and displays a vehicle-mounted video line fault point. According to the method, the position point of the vehicle video transmission wire harness fault can be quickly and effectively positioned, the fault of a vehicle-mounted video line can be focused and quickly processed, the troubleshooting efficiency is improved, and the cost of solving the fault problem is reduced.

    本发明涉及一种车载视频线路故障现场诊断方法及系统,该方法包括的步骤为:S01,信号发生器发射信号;S02,发射的信号通过传输链路时,如传输链路出现阻抗变化时,部分发射的信号被反射回来,被反射回来的信号即反射的信号;S03,采样示波器采样反射的信号;S04,MCU处理采样示波器采样的反射的信号,基于发射的信号与反射的信号的时间差计算出阻抗差异点的位置长度;S05,MCU判断线材损耗、连接器损耗是否小于等于对应的标定值,进而得到车载视频线路故障点并显示。本发明能快速、有效的定位出车辆视频传输线束故障的位置点,能够聚焦并快速的处理车载视频线路的故障,提升故障排查的效率,降低解决故障问题的代价。


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    Titel :

    Vehicle-mounted video line fault field diagnosis method and system


    Weitere Titelangaben:

    一种车载视频线路故障现场诊断方法及系统


    Beteiligte:
    CHEN YUGUO (Autor:in) / CHEN ZHUO (Autor:in) / JOO SUNG-YONG (Autor:in) / FU CHAOYANG (Autor:in) / YUAN CHANGRONG (Autor:in)

    Erscheinungsdatum :

    30.09.2022


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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