A door switch inspection device (11) for detecting an abnormal condition of a landing door switch (4) used in an elevator. Each of a plurality of landing door switches (4) is disposed on a corresponding landing door at each landing floor for detecting an open/closed state of the landing door. The door switch inspection device (11) includes a plurality of voltage detection units (A, B, C, ... N) connected to the ground side of their respective landing door switches (4) for detecting a voltage value of their respective landing door switches (4), and a switch contact monitoring unit (9) for detecting an abnormal condition of a landing door switch (4), which is carried out by calculating a voltage difference between two adjacent floors and comparing the voltage difference with a threshold voltage.


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    Title :

    AUTOMATIC DOOR SWITCH INSPECTION


    Additional title:

    AUTOMATISCHE TÜRSCHALTERINSPEKTION
    INSPECTION D'INTERRUPTEUR DE PORTE AUTOMATIQUE


    Contributors:

    Publication date :

    2023-04-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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