Application fields of piezoelectric ceramics-www.ultra-piezo.com

Piezoelectric ceramics is a functional ceramic material that can convert information between mechanical energy and electrical energy. Piezoelectric effect. In addition to piezoelectricity, piezoelectric ceramics also have dielectric properties, elasticity, etc., and have been widely used in medical imaging. Acoustic sensors, acoustic transducers, ultrasonic motors, etc. Piezoelectric ceramics are made by the relative stress of the internal positive and negative charge centers under the action of mechanical stress, which causes the opposite ends of the material to have oppositely bound trapped charges, ie piezoelectric effect, and has sensitive characteristics. Ceramics are mainly used in the manufacture of ultrasonic transducers, hydroacoustic transducers, electroacoustic transducers, ceramic filters, ceramic transformers, ceramic discriminators, high voltage generators, infrared detectors, surface acoustic wave devices, electro-optic devices, In addition to being used in high-tech fields, it is used to serve people in daily life and to create a better life for people.

Today, the range of piezoelectric ceramic products is not only widely used in medical and industrial fields, but also penetrates into every corner of people's daily life. Its application areas mainly involve the following five aspects:
First, the frequency control device. In recent years, there have been ceramic resonators, ceramic filters, tuning tuning fork filters, mechanical filters, ceramic discriminators, traps and delay lines. Among them, the output of ceramic resonators and ceramic filters has accounted for more than 65% of China's piezoelectric ceramic products, which is quite remarkable. In particular, ceramic resonators are characterized by high stability, no adjustment, small size and low cost. Typical applications are: televisions, camcorders, computers, CD-ROM drives, automotive electronics, VCDs, telephones, copiers, speech synthesizers, remote controls and toys.
Second, piezoelectric ultrasonic transducers. Piezoelectric ultrasonic transducers are acoustic devices that transmit and receive ultrasonic waves and are widely used in water and air media. The role of radar in underwater acoustic communication, known as sonar, is an essential sensor for all types of ships. In the industry, ultrasonic transducers have been used for ultrasonic cleaning, ultrasonic precision machining, ultrasonic humidification, phacoemulsification, ultrasonic seed treatment, ultrasonic flaw detection and ultrasonic diagnosis. Today, another broad application area for piezoelectric ultrasonic transducers is telemetry, remote control systems, and alarm systems.
Third, the piezoelectric sounder. Typical products of piezoelectric sounders are piezoelectric buzzers and piezoelectric transmitters, receivers, watches, calculators, electronic alarm clocks, small alarm bells, and ringing of telephones and mobile phones. Buzzer with transistor oscillating circuit and DC power supply can make continuous sound, buzzer with switching circuit can make intermittent sound, underwater microphone and speaker belonging to sound transducer can also be used to drive or seduce Fish school.
Fourth, piezoelectric devices for measurement and control. Piezoelectric devices for measurement and control mainly include pressure, acceleration, angular velocity sensors, as well as ultrasonic sounding, ultrasonic thickness measurement, ultrasonic flow measurement, and ultrasonic diagnosis.

Fifth, piezoelectric igniters and piezoelectric transformers. Mass production of piezoelectric igniters began in 1965, and has been developed more rapidly in the past 20 years. At present, almost all gas stoves, bathroom gas boilers, gas room heaters, gas water heaters and cigarette lighters use piezoelectric igniters. Piezoelectric transformer has the advantages of simple structure, small size, high transformation ratio, high electromechanical conversion efficiency, no electromagnetic interference and safety, etc., so it is used for electrostatic smoke remover, negative ion generator, electrostatic coating equipment, electrostatic copier, electric field treatment. Instrument and LCD backlight.

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