Typical applications of piezoelectric ceramics in the Piezohannas

1.Applications in medical and beauty products.

Ultrasonic beauty is generated a high frequency alternating current by generator , which make the piezoelectric chip to generate ultrasonic waves. It mainly uses the mechanism of ultrasonic waves on human skin and superficial tissues. In the medical, the doctor puts the piezoelectric ceramic probe on the inspection place of the human body, and sends an ultrasonic wave after being energized. When the human body touches the tissue of the human body, it generates an echo, and then receives the echo, which is displayed on the fluorescent screen, and the doctor will can understand the internal conditions of the human body.

Piezoelectric discs and HIFU piezo?is mainly used for the production of the ultrasonic beauty devices , the material has a large transmit power, strong field loss, good stability and consistency, is the first product to produce ultrasonic focused transducer.High intensity focused ultrasound (HIFU) is a medical procedure that applies high intensity focused ultrasound energy to locally heat and destroy diseased or damaged tissue through ablation.Focused ultrasound may be used to?HIFU therapy for face,skin lifting or to treat cysts,tumors, break up kidney stones ect.

2.Applications in the acoustic pickups 

Piezo acoustic pickups are used for sound transducer of piezoelectric ceramic, that is, the current generates vibration through the inverse piezoelectric effect and emits sound that can be heard by the human ear. The piezoelectric ceramic can generate different frequencies vibration through the control of the electronic circuit. so it emits a variety of different sound.By using the positive piezoelectric effect of piezoelectric ceramics,piezoelectric ceramic is mounted in the resonator of the guitar , and fluctuate strings. When it records vibration of the resonance chamber , the piezoelectric ceramic emits the electrical signal, there are two methods to analyze the frequency of the electrical signal . The data is used to summarize the frequency characteristics of the electrical signal when the guitar emits different tones, and it is verified against the existing frequency data of the musical tone. The second part allows you to use the inverse piezoelectric effect to analyze the dates when the piezoelectric ceramic input current, the surface of the resonance box has regular vibration.

3.Applications of underwater communications

The underwater acoustic transducer plays an irreplaceable role in the underwater communication process. The entire process of underwater acoustic communication can be summarized duo to the instructions from the PC to the modem. After being amplified by power amplification, it is sent to the underwater acoustic transducer, and the underwater part is received in the reverse direction. The selection of the underwater acoustic communication frequency and the selection of the underwater acoustic transducer were studied. The performance test of transducer was carried out to determine the carrier frequency of the underwater acoustic communication. The study of underwater acoustic transducers will provide a high guarantee for the stability and reliability of communication in the maintenance of underwater submarine oil pipelines.The submarine is detected by the sonar-underwater ear. The piezoelectric ceramic is the material to make the sonar. It emits ultrasonic waves and reflects when it encounters the submarine. after being received and processed, you can measure the position, distance.

4.Applications in the ultrasonic cleaning and ultrasonic welder

When is applied piezo rings for ultrasonic welding equipment and ultrasonic cleaning equipment. It mainly uses high-power emitting piezoelectric ceramics. Ultrasonic transducer is a device that can convert high frequency electric energy into mechanical energy. Ultrasonic transducer is used as energy conversion device. The function is to convert the input electrical power into mechanical power ( ultrasonic waves) and transmit, while it consumes a small amount of power itself. The transducer is a device that converts electrical energy and mechanical energy by piezoelectric effect, and amplifies the front and back of the acoustic impedance by acoustic impedance. Ultrasonic cleaning produces the ultrasonic vibration by the transducer. The high-pressure cavitation generated by the cavitation effect under the water which is the object to be cleaned to achieve a good cleaning effect.

5.Applications in the automative electronics  

Piezoelectric ring sensor converts positive and negative piezoelectric effects between electric energy and mechanical energy. When the electric signal is applied to piezoelectric ceramics, which generated mechanical vibration and emitted ultrasonic waves. When ultrasonic waves encounter obstacles during air transmission,immediately they are reflected back, when is applied to piezoelectric ceramics, there will be an electrical signal output, and then through the data processing of difference ranging,to calculate the distance between the vehicle and the obstacle and alarm when dangerous collision. It can accurately detect the tiny obstacles in the tail of the car and the blind spot of the driver's perspective, and it is quite practical.