Ultrasonic transducer, the technical problem to be solved is to design an ultrasonic transducer with large working distance and bandwidth

For the ultrasonic transducer, the technical problem to be solved is to design an ultrasonic transducer with a large working distance and a wide frequency band. 　　

The transducer is composed of a shell, a matching layer, a piezoelectric ceramic disc transducer, a backing, a lead-out cable and a Cymbal array receiver. The piezoelectric ceramic disc transducer is made of PZT-5 piezoelectric material polarized in the thickness direction. The Cymbal array receiver is composed of 8-16 Cymbal transducers, two metal rings and rubber washers.

The piezoelectric ceramic disc transducer is used as a basic ultrasonic transducer, which transmits and receives ultrasonic signals; the Cymbal array receiver is located on the disc piezoelectric transducer as an ultrasonic receiver for receiving the disc Doppler echo signal outside the transducer frequency band. The operating distance of the invention is greater than 35m, the frequency bandwidth reaches 10kHz, and it can detect the long-distance target moving at high speed.