This design uses a single-chip microcomputer as the control and parameter calculation circuit. The signal generator outputs a continuous analog excitation frequency sweep signal, which is applied to the piezoelectric ceramics ,which detects the voltage and current amplitude of the analog signal, con

1.One-way Piezoelectric sensor The structure of the piezoelectric ceramic cylinder is usually a load washer type. The figure shows a one-way piezoelectric sensor structure, which is composed of a base, a force transmitting upper cover, a chip electrode, a quartz wafer, an insulating member

The ultrasonic cleaning vibrator should be placed in a dry place to avoid the ultrasonic vibration of the mover, which will affect the normal work. If the ultrasonic vibrator is damp, put it into the oven and set it to dry at about 100 °C for 2 hours or use a hair dryer to remove moisture until the

1.Development of ultrasonic piezoelectric transducer materials: (1) Piezoelectric composite transducers: At present, piezoelectric ceramics are the most commonly used materials in ultrasonic imaging transducers, with electromechanical conversion efficiency, easy to match with circuits, and undetermi

The core of the underwater acoustic transducer is a piezoelectric wafer in its outer casing, and there are many kinds of materials constituting the wafer. The size of the wafer, such as diameter and thickness, varies, so the performance of each probe is different and its performance must be known be

The polarization of some dielectrics is very special. In a certain temperature range, their dielectric constants are not constant, but vary with field strength, and after removing the external electric field, these dielectrics are not neutral. There is residual polarization. In order to be analogous

1. Hysteresis characteristics of piezoelectric ceramics: The difference between the step-up and step-down displacement curves of the same piezoelectric ceramic, and the difference in displacement is called hysteresis. 2. Nonlinearity characteristics of piezoelectric ceramics: The input voltage of pi

As a new material that has emerged in recent years, piezoelectric ceramics are widely used in the manufacture of electronic products and laboratory research. The variation of the dielectric constant of piezoelectric ceramics is closely related to its structural characteristics and polarization mode.

The use of ultrasound HIFU piezo ceramic for diagnosis and treatment has become one of the most important branches of medical bioengineering.More and more people are paying attention. As early as the 1930s, there were reports of ultrasound for treatment after forty years.Generations have proposed th

Applications of Piezoelectric ceramic transducerPiezoelectric ceramic as a transducer,its application of ultrasonic piezoelectric transducer of is broader than the oscillator. Piezoelectric transducers are one of them. They are underwater acoustic devices that emit and receive