A system includes multiple capacitive sensors, a multiplexer, a programmable gain amplifier, an oscillator, a switch, and a controller. The sensors are coupled to the multiplexer, the multiplexer is coupled to the switch, and the switch is coupled to the amplifier and the oscillator. The controller may control the multiplexer to select each of the sensors. The controller may control the switch to activate the amplifier or the oscillator. The controller may measure voltage output by the amplifier or frequency output by the oscillator. The system may be included in an occupant support such as a vehicle seat.


    Access

    Download


    Export, share and cite



    Title :

    ANALOG SIGNAL CONDITIONING WITH DIAGNOSTICS FOR CAPACITIVE SENSOR ELEMENTS


    Contributors:
    OEL LUDGER (author)

    Publication date :

    2019-12-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein / B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



    Analog signal conditioning with diagnostics for capacitive sensor elements

    OEL LUDGER | European Patent Office | 2020

    Free access

    CAPACITIVE MEASUREMENT CIRCUIT WITH SENSOR WIRING DIAGNOSTICS

    LAMESCH LAURENT | European Patent Office | 2017

    Free access

    Capacitive measurement circuit with sensor wiring diagnostics

    LAMESCH LAURENT | European Patent Office | 2020

    Free access

    CAPACITIVE MEASUREMENT CIRCUIT WITH SENSOR WIRING DIAGNOSTICS

    LAMESCH LAURENT | European Patent Office | 2019

    Free access