An illustrative example embodiment of a switch monitoring device (30) includes a controller (42) configured to command a switch (38, 40) to enter at least one of a conducting state and a non-conducting state. A monitoring circuit (46) conducts current when the switch (38, 40) is in the conducting state. A comparator (48) provides an output indicating a relationship between a voltage of a selected portion of the monitoring circuit (46) and a threshold voltage (52). The controller (42) determines a condition of the switch (38, 40) based on the output of the comparator (48) and the command.


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    Title :

    ELEVATOR SWITCH MONITORING DEVICE


    Additional title:

    AUFZUGSSCHALTERÜBERWACHUNGSVORRICHTUNG
    DISPOSITIF DE SURVEILLANCE DE COMMUTATEURS D'ASCENSEURS


    Contributors:
    GUO BEN (author) / LI ZHENHONG (author)

    Publication date :

    2022-08-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H01H Elektrische Schalter , ELECTRIC SWITCHES / H03K PULSE TECHNIQUE , Impulstechnik



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