piezoelectric transducer to measure displacement

                     piezoelectric transducer to measure displacement

  Piezoelectric ultrasonic transducers are using the piezoelectric effect of piezoelectric materials. The polarized PZT material piezo platesundergoes mechanical deformation under the applied electric field. This is called the inverse piezoelectric effect. Conversely, the mechanical deformation of the piezoelectric material also generates the voltage. This is called the positive piezoelectric effect. piezo energy harvestingis using the inverse piezoelectric effect, high-frequency voltages can be converted into high-frequency mechanical vibrations to generate ultrasonic waves; the positive ultrasonic vibrations can also be used to convert receiving ultrasonic vibrations into electrical signals. This is how the ultrasonic transducer works. Piezoelectric ultrasonic transducers can be seen as four-terminal networks with electrical and mechanical ends. Piezoelectric materials of piezo block crystal is making ultrasonic transducers include piezoelectric single crystals, it is polycrystalline piezoelectric ceramics, piezoelectric polymers, piezoelectric composites. Among them, lead zirconate titanate piezoelectric disc crystal have the advantages of high mechanical strength, temperature and humidity resistance, low cost, and good electromechanical coupling effect, and have been widely used in ultrasonic transducers. Ultrasonic transducers are used in the ultrasonic range finders. Using lead zirconate titanate piezoelectric ceramics is vibrator materials.