Surroundings-sensing system having an ultrasonic transducer, and a motor vehicle having such a surroundings-sensing system
A technology of ultrasonic transducers and surrounding environment, applied in the directions of sound-producing instruments, piezoelectric/electrostrictive transducers, resonant transducers, instruments, etc. question
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[0041] figure 1 The surroundings sensing device 1 according to the first preferred embodiment of the invention is shown in a side cross-sectional view in an inactivated state. The surrounding environment sensing device 1 includes an ultrasonic transducer 11 and a membrane 12, wherein the ultrasonic transducer 11 is composited by a precursor 111, a transducer element 112 and a rear body 113 in this order. The precursor 111 is coupled to the membrane 12 with an end side 1111 facing the membrane 12 (also referred to as end face section 1111 or end face region 1111 ). This means that, in the embodiment shown, the end side 1111 forms the contact surface with respect to the membrane 12 . The coupling between precursor 111 and membrane 12 can take place both indirectly and directly, wherein indirect contact means that at least one further material layer, for example a liquid layer such as oil or Gel for improved acoustic coupling. Alternatively, there can be a mechanical coupling...
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