Classification and working principle of ultrasonic transducer
Ultrasonic transducer is a general term for various types of devices that transmit and receive ultrasonic waves. According to the use environment, working frequency, required power, and different purposes of the transducer, various structural forms can be adopted.
Ultrasonic transducer is a general term for various types of devices that transmit and receive ultrasonic waves. According to the use environment, working frequency, required power, and different purposes of the transducer, various structural forms can be adopted. As far as the principle of energy conversion is concerned, some ultrasonic transducers use the physical effects of the transducer material such as piezoelectric effect, magnetostriction, electrostriction, etc., and some use the electrodynamic effects in the transducer structure such as electromagnetic effects, Electrostatic effect; some use the vortex vibration during fluid injection and the resonance and modulation of the structure. In addition, various structural forms can be adopted according to the use environment, operating frequency, required power, and different purposes of the transducer. (1) Ultrasonic transducer: A device that can convert high-frequency electrical energy into mechanical energy, generally magnetostrictive and piezoelectric ceramic. The power output to the ultrasonic generator, and then to the ultrasonic transducer, usually through the ultrasonic export and receiving device to generate ultrasonic waves. (2) The composition of the ultrasonic transducer: including the shell, the matching layer, the acoustic window, the piezoelectric ceramic disc transducer, the backing, and the lead-out cable. It is characterized in that it also includes the array receiver, which consists of the lead-out cable and It is composed of energy device, metal ring and rubber gasket. (3) Ultrasonic transducers are piezoelectric ceramics that resonate at ultrasonic frequencies. The piezoelectric effect of the material converts electrical signals into mechanical vibrations. Ultrasonic transducers are energy conversion devices whose function is to input Electric power is converted into mechanical power (ultrasound) and then transmitted, and it consumes a small part of its own power. Types of ultrasonic transducers: can be divided into piezoelectric transducers, sandwich transducers, cylindrical transducers, inverted horn transducers, etc.
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