Patent ID: 8760971
Filing Date: 2014-06-24
Classification: G01H,G01N,G01S,G10K

Abstract:
1. An ultrasonic sensor, comprising: a diaphragm which has at least two partial regions for at least one of emitting and receiving ultrasonic signals, the two partial regions having different resonance characteristics; a chassis attached to the diaphragm, the chassis having negligible vibrational amplitudes; and at least one electromechanical transducer coupled to the diaphragm, wherein a control signal having at least two different control signal frequencies is applied to the electromechanical transducer, a first control signal frequency being in the range of a resonant frequency of a first partial region of the diaphragm, and a second control signal frequency being in the range of a resonant frequency of a second partial region of the diaphragm; wherein the electromechanical transducer is attached to the diaphragm by an adhesive layer, and is attached to a control unit via electrical leads.