Hubei Hannas Tech Co.,Ltd-Professional Piezoceramic Elements Supplier
News
You are here: Home / News / Ultrasonic Transducer information / Applications of piezoelectric ultrasonic sensors

Applications of piezoelectric ultrasonic sensors

Views: 0     Author: Site Editor     Publish Time: 2020-09-28      Origin: Site

Inquire

facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
sharethis sharing button

  1. Piezoelectric force sensor

   Piezoelectric force sensor is a industrial ultrasonic sensor that uses piezoelectric elements to directly realize force-to-electricity conversion. In tension and compression applications, two or more piezo quartz crystals are usually used as piezoelectric elements. Its rigidity, wide measuring range, high linearity and stability, and good dynamic characteristics. When a charge amplifier with a large time constant is used, quasi-static force can be measured. According to the force measurement status, there are unidirectional, bidirectional and three-directional sensors, and they are basically the same in structure.

  

2. Piezoelectric acceleration sensor

   Piezo element is generally composed of two piezoelectric sheets. Piezo plate of silver layer on the two surfaces of the piezoelectric sheet, and weld the output lead on the silver layer, or clamp a piece of metal between the two piezoelectric sheets, the lead is welded to the metal sheet, and the other lead of the output end is directly connected to the ultrasonic sensor base. Placing a mass with a larger specific gravity on the piezoelectric sheet, and then use a hard spring, bolt, or nut to preload the mass. The whole assembly is installed in a metal shell with a thick base. In order to isolate any strain of the test piece from being transmitted to the piezoelectric element and avoid false signal output, it is generally necessary to thicken the base or choose a material with greater rigidity. 

  

At present, there are many materials for making piezoelectric ultrasonic sensors, which can be divided into ultrasonic sensor parts crystal, piezoelectric polycrystalline and organic piezoelectric materials. The most commonly used piezoelectric sensors are various types of piezoelectric ceramics belonging to piezoelectric polycrystals and quartz crystals in piezoelectric single crystals. Other piezoelectric single crystals include lithium niobate, lithium tantalate, lithium gallate, and bismuth germanate suitable for high-temperature radiation environments.


Today's large-scale precision systems are very concerned about quality and size, and traditional large-scale piezoelectric sensors will gradually lose their market. With the development of new materials and new processing technologies, silicon acceleration sensors made of various micro-processing technologies such as lasers are gradually replacing traditional silicon acceleration sensors due to their small size, interchangeability and reliability. For piezoelectric ultrasonic sensor ,the function of the piezoelectric sensor has broken through the traditional function. Its output is no longer a single analog signal, but a digital signal processed by a microcomputer. Some piezoelectric sensors such as integrated ultrasonic sensor for distance measurement has their own control function, that is, digital sensor, this is a trend of the best development.


Feedback
Hubei Hannas Tech Co.,Ltd  is a professional piezoelectric ceramics and ultrasonic transducer manufacturer, dedicated to ultrasonic technology and industrial applications.                                    
 

RECOMMEND

CONTACT US

Add: No.302 Innovation Agglomeration Zone, Chibi Avenu ,Chibi City, Xianning, Hubei Province,China
E-mail: sales@piezohannas.com
Tel: +86 07155272177
Phone: +86 +18986196674         
QQ: 1553242848 
Skype: live:mary_14398
​        
Copyright 2017  Hubei Hannas Tech Co.,Ltd All rights reserved. 
Products