A capacitive occupancy or proximity detector (10) comprises a heating circuit, an impedance measurement circuit (34, 36, 40) and a diagnostic circuit. The heating circuit includes a heating element (12). The impedance measurement circuit is connected to the heating element so as to measure impedance between the heating element and a node at ground potential. The diagnostic circuit is configured for measuring electrical resistance across the heating circuit and includes a heating current sensor (42), configured for sensing a heating current across the heating circuit, a current supply device (48) for driving a diagnostic current across the heating circuit and a current limiting ground path (50), configured for draining the diagnostic current and for blocking the heating current.


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    Titel :

    Diagnostic capacitive occupancy or proximity detector


    Beteiligte:
    LAMESCH LAURENT (Autor:in) / PUETZ MICHAEL (Autor:in) / HOYER DAVID (Autor:in) / PETEREIT ANDREAS (Autor:in) / MEYERS THOMAS (Autor:in) / ALTHAUS FRANK (Autor:in) / VIRNICH MICHAEL (Autor:in)

    Erscheinungsdatum :

    19.09.2017


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / G01V Geophysik , GEOPHYSICS / H03K PULSE TECHNIQUE , Impulstechnik



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