What Are the Components of an Ultrasonic Transducer?

Ⅰ. The introduction of the ultrasonic transducer


The ultrasonic transducer is composed of a central piezoelectric ceramic element, front and rear metal cover plates, prestressed screws, electrode sheets and insulating tubes. This kind of sandwich transducer (also known as: bolt-fastened transducer) generates stable ultrasonic waves when the load changes, and is the most basic and main method to obtain a power ultrasonic drive source. Contact BBT surgery equipments company for more ultrasonic transducer price info!


Ⅱ. Design composition of ultrasonic transducer


According to different designs, the shape of the medical ultrasonic transducer mainly includes column type (the diameter of front and rear metal cover plates are the same), horn type (the diameter of the front cover plate is excessively reduced by the arc type), column type (with a section in the middle) and other structural shapes. The technical problem to be solved by the ultrasonic transducer is to design an ultrasonic transducer with a large working distance and a wide frequency band. The ultrasonic transducer consists 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 consists of 8-16 Cymbal transducers, two metal rings and rubber washers. 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 ultrasonic transducer, as an ultrasonic receiver, used to receive the Doppler echo signal outside the frequency band of the disc ultrasonic transducer. The invention acts on the distance greater than 35m, the frequency bandwidth reaches 10kHz, and can detect the long-distance target moving at high speed.

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