A piezoelectric and/or electret sensing device includes a piezoelectric and/or electret transducer for producing a measurement current in response to mechanical stimulus, and a control and evaluation circuit connected to the transducer. The control and evaluation circuit includes a transimpedance amplifier having a first and a second input, the transducer being operatively connected between the first input and a reference node, and an electrical waveform generator for generating an electrical waveform, the electrical waveform generator being operatively connected between the second input and the reference node.


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    Title :

    Piezoelectric or electret sensing device


    Contributors:

    Publication date :

    2017-06-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G01H MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES , Messen von mechanischen Schwingungen oder Ultraschall-, Schall- oder Infraschallwellen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H01L Halbleiterbauelemente , SEMICONDUCTOR DEVICES



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