A capacitive detection system for detecting occupancy of a vehicle seat includes a signal generating unit and a signal evaluation unit. The vehicle seat has a seat heater member configured for receiving pulse-width modulated electrical heater power of a pulse-width modulation frequency and time-varying output signals of the signal generating unit. The signal evaluation unit is configured to monitor a voltage difference between the electrical connection ends of the seat heater member, and is further configured to generate an output signal that is indicative of the seat heater member to be defective, on the basis of a fulfillment of at least one predetermined condition concerning the monitored voltage difference and a phase of the pulse-width modulated electrical heater power.


    Access

    Download


    Export, share and cite



    Title :

    CAPACITIVE VEHICLE SEAT OCCUPANCY DETECTION SYSTEM WITH DETECTION OF VEHICLE SEAT HEATER MEMBER INTERRUPTION


    Contributors:

    Publication date :

    2018-12-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / G05B Steuer- oder Regelsysteme allgemein , CONTROL OR REGULATING SYSTEMS IN GENERAL







    Seat heater and capacitive occupancy sensor combination

    LAMESCH LAURENT | European Patent Office | 2016

    Free access