Method for driving an ultrasound sensor and ultrasound sensor

Method for driving an ultrasound sensor and ultrasound sensor

  • CN 102,859,580 A
  • Filed: 04/12/2011
  • Published: 01/02/2013
  • Est. Priority Date: 04/15/2010
  • Status: Active Grant
First Claim
Patent Images

1. sonac (1), it has:

  • A diaphragm (2;

    2 '"'"';

    2 ";

    2 " '"'"';

    2 " " "), described diaphragm have at least two subregion (2-1, the 2-2 that are used for emission and/or receive ultrasonic signal;

    2-1 '"'"', 2-2 '"'"';

    2-1 " " ", 2-2 " " ", 2-3 " " ", 2-4 " " "), wherein, described two sub regions (2-1,2-2;

    2-1 '"'"', 2-2 '"'"';

    2-1 " " ", 2-2 " " ", 2-3 " " " and, 2-4 " " ") has different resonance characteristics;

    At least one and described diaphragm (2;

    2 '"'"';

    2 ";

    2 " '"'"';

    The electromechanical transducer (3) of 2 " " ") coupling, the control signal with at least two different control signal frequencies can be applied on the described electromechanical transducer,Wherein, the first control signal frequency is positioned at described diaphragm (2;

    2 '"'"';

    2 ";

    2 " '"'"';

    First subregion (the 2-1 of 2 " " ");

    2-1 '"'"';

    In the scope of the resonance frequency of 2-1 " " "), and the second control signal frequency is positioned at described diaphragm (2;

    2 '"'"';

    2 ";

    2 " '"'"';

    Second subregion (the 2-2 of 2 " " ");

    2-2 '"'"';

    In the scope of the resonance frequency of 2 " " ").

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