The invention discloses an elevator door lock detection circuit. The front-end circuit is located on one side of a door lock switch, and the rear-end circuit is located on the other side of the door lock switch. The front-end circuit comprises a series circuit formed by connecting a first resistor and a rectifying circuit in series. One side of the door lock switch is connected with one end of theseries circuit. The other end of the series circuit is grounded through a second resistor. The front-end circuit further comprises a power supply circuit, a comparator and an active detection circuit. The power supply circuit is connected between the series circuit and one side of the door lock switch. The first end of the comparator is connected with reference voltage. The second end of the comparator is connected between the rectifying circuit and the second resistor, and the output end of the comparator is connected with the active detection circuit, and the rear-end circuit is connected with the ground through a third resistor. The detection circuit is small in size, small in occupied space, free of limitation of the service life of an electrical switch and capable of being used for along time theoretically, and elevator maintenance cost is reduced.

    本发明公开了一种电梯门锁检测电路,包括位于门锁开关一侧的前端电路和位于门锁开关另一侧的后端电路:所述前端电路包括由第一电阻和整流电路串联连接的串联电路,所述门锁开关一侧与所述串联电路的一端连接,串联电路的另一端通过第二电阻接地,前端电路还包括电源电路、比较器和主动检测电路,所述电源电路连接于所述串联电路和所述门锁开关一侧之间,所述比较器的第一端接入参考电压,所述比较器的第二端连接于所述整流电路和第二电阻之间,所述比较器的输出端与所述主动检测电路连接;所述后端电路通过第三电阻与地连接。本发明的检测电路体积小,占用空间少,没有电气开关寿命的限制,理论上可以长期使用,减少电梯维护成本。


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    Titel :

    Elevator door lock detection circuit


    Weitere Titelangaben:

    一种电梯门锁检测电路


    Beteiligte:
    LI ZHIJUN (Autor:in) / ZHANG YIJIAN (Autor:in)

    Erscheinungsdatum :

    2020-05-08


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B66B Aufzüge , ELEVATORS



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