Article List
- How the combined transducer worksThe resonant frequency and bandwidth of ultrasonic transducers are selected from the PZT-5A piezoelectric ceramic disc polarized in the thickness direction as the transducer, and the radius R of the piezoelectric ceramic disc is 6mm and has a thickness h. The height of the outer surface of the innerUltrasonic Transducer information September 30, 2018
- Phase estimation method of ultrasonic transducersThe phase estimation method of time delay estimation is a practical method to improve the accuracy of ultrasonic delay estimation. Based on the fact that for a simple harmonic, the fourier transform (DFT) can be used to calculate its fourier coefficient corresponding to the resonant frequency, and tUltrasonic Transducer information September 24, 2018
- What’s the multi-probe ultrasonic range finderA multi-probe ultrasonic range finder for detecting traffic flow conditions, which not only provides information for traffic flow survey statistics and intersection traffic signal automatic control systems, but also applies to various automatic monitoring related to motor vehicle passing and arrivalUltrasonic Transducer information September 24, 2018
- Main performance indicators of ultrasonic transducersRay characteristics of ultrasonic waves are formed in a straight line when they encounter two substances with different acoustic impedance ratios.At the interface, reflection and refraction transmission occurs. The reflection and refraction of ultrasonic waves follow the laws of geometric optics. ThUltrasonic Transducer information September 27, 2018
- Radial vibration mode of the ultrasonic transducerModeling and experiment of ultrasonic transducer in the air medium, the frequency band of the ultrasonic sensor is generally narrow, which directly affects its detection performance for high-speed moving targets. In order to solve the narrow band of the ultrasonic sensor, a micro-miniature transduceUltrasonic Transducer information September 27, 2018
- What’s the production process of piezoelectric ceramicThe technological process of piezoelectric ceramic is as follows: Ingredients - mixing and grinding - pre-sintering - secondary grinding - granulation - molding - plasticizing - sintering into porcelain - shape processing - being electrode - high pressure polarization --Aging test.1. the ingredientsBasics of Piezoelectric Ceramics September 17, 2018
- The main structure of piezoelectric ceramicsThere are three main types of piezoelectric ceramics: barium titanate (BaTiO3), raw materials are titanium dioxide, barium carbonate, barium carbonate, etc.; lead zirconate titanate (PbZrTiO3), raw materials are titanium dioxide, zirconium oxide, lead oxide, barium carbonate, antimony oxide, antimonBasics of Piezoelectric Ceramics September 16, 2018
- The basic principle of piezoelectric ceramics materialDomain:Generally, the directions of spontaneous polarization of ferroelectrics are different, but in a small area, the spontaneous polarization directions of the respective unit cells are the same, and this small area is called a ferroelectric domain. The boundary wall between the two domains is calBasics of Piezoelectric Ceramics September 10, 2018
- Practical applications of specific piezoelectric ceramics materials(2)1)Research status of high temperature piezoelectric materials: SiO2 is one of the earliest piezoelectric materials applied to devices. Due to its stable resonant frequency and good temperature stability, it is widely used in the production control and management of all communication system frequenciBasics of Piezoelectric Ceramics September 06, 2018
- Practical applications of specific piezoelectric ceramics materialsBiological fieldBiological piezoelectric ceramics are combined with lead free piezoelectric ceramics to form bio-piezoelectric ceramics. Nano-generators use zinc oxide to convert mechanical energy generated by human movement, muscle contraction, and body fluid flow into electrical energy, and supplyBasics of Piezoelectric Ceramics September 06, 2018