The invention discloses a state monitoring circuit and method for vehicle-mounted electronic equipment. The circuit comprises a microprocessor, a serializer/deserializer, a DCDC power module, and a camera module, the DCDC power module is connected with the serializer/deserializer, and the microprocessor and the camera module achieve the data communication through the serializer/deserializer. The circuit is characterized by further comprising a current detection module, a comparison module and a switch module; the switch module is connected with the DCDC power supply module so as to control onor off of power supply; the input end of the current detection module is connected with the output end of the DCDC power supply module so as to detect output current and convert the output current into voltage; the input end of the comparison module is connected with the output end of the current detection module for voltage comparison; and the microprocessor is connected with the output end of the comparison module to control the state of the switch module according to a comparison result. The circuit is simple in structure, easy to implement, low in cost and high in universality.

    一种车载电子设备的状态监测电路及方法,包括微处理器、串行/解串器、DCDC电源模块和摄像头模块,该DCDC电源模块与串行/解串器相连,该微处理器和摄像头模块之间通过串行/解串器实现数据通信;其特征在于:还包括电流检测模块、比较模块和开关模块;该开关模块与DCDC电源模块相连以控制开启或关闭供电;该电流检测模块输入端与DCDC电源模块输出端相连以检测输出电流并转换为电压;该比较模块输入端与电流检测模块输出端相连以进行电压比较;该微处理器与比较模块输出端相连以根据比较结果控制开关模块状态。本发明电路结构简单、易于实现、电路成本低、通用性强。


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    Title :

    State monitoring circuit and method for vehicle-mounted electronic equipment


    Additional title:

    一种车载电子设备的状态监测电路及方法


    Contributors:
    LAN WEIHUA (author) / TANG YIMING (author) / LIAO GUIFU (author)

    Publication date :

    2021-01-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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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