Heart sound is the shock vibration to the chest wall during the heartbeat. The mechanical vibration of heart sounds can be recorded by instruments such as polyvinylidene fluoride (PVDF) piezoelectric ultrasonic transducer , which is called a phonogram. When detecting simulated human heart sounds, th

When is designing a special test instrument for the control unit in the car, the company trusted the force and torque sensors. As one of the components of the tester, the ultrasonic distance transducer has proved its advantages such as high accuracy and automatic quality control, and it meets the re

Ultrasonic distance measurement has a series of advantages, but there are many factors that affect measurement accuracy, so it is difficult to achieve higher accuracy. Based on the principle of ultrasonic distance measurement, a single temperature ultrasonic transducer , humidity compensation scheme

Piezoelectric sensorThe application of piezoelectric sensors for sensing and excitation extends to many areas. This article mainly introduces the induction of some physical intensities, namely acceleration, vibration, oscillation and pressure, which can be considered similar from the perspective of

What is a piezoelectric ceramics?　Piezo ceramics ultrasonic sensor is a device that uses the piezoelectric effect to measure the electromotive force caused by the mechanical force applied to the piezoelectric material. They are based on the principle of electromechanical energy conversion, mainly me

Piezoelectric ceramics sensors are ultrasonic sensors made by using the piezoelectric effect produced by certain dielectrics. The so-called piezoelectric effect refers to the phenomenon that certain dielectrics undergo deformation (including bending and stretching deformation) due to the polarizatio

Ultrasonic distance measurement sensor has a series of advantages, but there are many factors that affect measurement accuracy, so it is difficult to achieve higher accuracy. Based on the principle of ultrasonic distance measurement, temperature, and humidity compensation program of ultrasonic trans

Design of automobile anti-collision system by using ultrasonic ranging transducerWith the continuous advancement of automobile technology, especially the development of autonomous driving technology, more and more distance detection equipment will continue to appear. At present, there are four main

Due to the strong directivity of ultrasonic waves, slow energy consumption, and long distances in the medium, ultrasonic waves are often used for distance measurement. For example, ultrasonic rangefinders and level measuring instruments can be realized by ultrasonic waves. Ultrasonic testing is ofte

The ultrasonic rangefinder adopts NE555 circuit, two-stage amplifier circuit and level comparison circuit to realize the transmission and reception of ultrasonic waves. The comparator is the core unit of the rangefinder, which realizes the control of the transmitting circuit and the processing of th

Principle of piezoelectric ultrasonic generator　　Piezoelectric ultrasonic generator actually uses the resonance of piezoelectric crystal to work. The internal structure of the ultrasonic generator is shown . It has two piezoelectric wafers and a resonance plate. When a pulse signal is applied to its