The invention relates to an automobile reversing detection circuit, which comprises a voltage control unit, a filtering unit, a first switch unit, a current limiting unit, a second-order filtering unit and a second switch unit, and is characterized in that the voltage control unit is used for filtering high-voltage signals in received original reversing signals; the filtering unit is used for filtering high-frequency clutters in the clamping voltage; the first switch unit is used for filtering low-voltage interference signals in reversing signals; the current limiting unit is used for carrying out current limiting on the gating unit and carrying out voltage division on the control unit; the second-order filtering unit is used for smoothing the reversing signal after the high-voltage signal and the high-frequency clutter are removed, so that oscillation and noise of the system are reduced, and the stability of the system is improved; and the second switch unit is used for controlling a reversing signal to be connected with an automobile controller. The objective of the invention is to solve the problems of high cost and complex circuit of an existing automobile reversing detection circuit.

    本发明是一种汽车倒车检测电路,所述电路包括压控单元、滤波单元、第一开关单元、限流单元、二阶滤波单元和第二开关单元,所述的压控单元:用于将接收到的原始倒车信号中的高压信号滤除;所述的滤波单元:用于滤除钳位电压中的高频杂波;所述的第一开关单元:用于滤除倒车信号中的低压干扰信号;所述的限流单元:用于对门控单元进行限流和控制单元进行分压;所述的二阶滤波单元:用于对去除高压信号和高频杂波后的倒车信号进行平滑处理,从而减小系统的振荡和噪声,提高系统的稳定性;所述的第二开关单元:用于控制倒车信号与汽车控制器相连。目的是在于解决现有的汽车倒车检测电路的成本较高以及电路较为复杂的问题。


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    Title :

    Automobile reversing detection circuit


    Additional title:

    一种汽车倒车检测电路


    Contributors:
    TANG ZHONGLIN (author) / MO JINJU (author)

    Publication date :

    2023-08-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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