The function of ultrasonic transducer is to convert the input electric power into mechanical power (that is, ultrasonic) and then transfer it out, but it consumes a small part of the power.

The technical problem of ultrasonic transducer is to design a kind of ultrasonic transducer with large operating distance and wide frequency band.

The transducer consists of a shell, a matching layer, a piezoelectric ceramic disc transducer, a backing, an outgoing cable and a cymbal array receiver. The piezoelectric ceramic disk transducer is made of PZT-5 piezoelectric material polarized in the thickness direction. The cymbal array receiver consists of 8-16 cymbal transducers, two metal rings and rubber gaskets. The operating distance of the invention is greater than 35m, the bandwidth reaches 10kHz, and the high-speed moving long-distance target can be detected.

Functional structure

The ultrasonic transducer comprises a shell (1), a matching layer i.e. a sound window (2), a piezoelectric ceramic disc transducer (3), a backing (4) and an outgoing cable (5). The ultrasonic transducer is characterized in that it also comprises a cymbal array receiver, which is composed of an outgoing cable (6), 8-16 cymbal transducers (7), a metal ring (8), (9) and a rubber washer (10); The cymbal array receiver is located on the disc piezoelectric transducer 3; The piezoelectric ceramic disc transducer is used as the basic ultrasonic transducer to transmit and receive ultrasonic signals; Cymbal array receiver is located on the disc piezoelectric transducer, which is used as ultrasonic receiver to receive Doppler echo signal beyond the frequency band of the disc transducer.

It is mainly used for ultrasonic plastic welding machine, ultrasonic metal welding machine, ultrasonic cleaning machine, gas camera, trichloride machine, etc.