压电式传感器的国内外现状及进展趋势(45 页)Good is good, but better carries it.精益求精，善益求善。 硕士讨论生课程 《智能传感器技术》（考查） 自选课题题 目：压电式传感器的国内外现状与进展趋势学 院： 自动化工程学院 年级专业： 姓 名： 任课老师： 2011 年 5 月 20 日压电式传感器的国内外现状及进展趋势The Current Situation and Tendency ofat Home and Aboard摘 要压电式传感器是一种典型的自发电式传感器。它具有灵敏度高、使用频带宽、信噪比高、结构简量轻、工作可靠等优点。压电式传感器正不断地向智能化进展。文章首先介绍了压电传感器的理论基础即压电效应，压电材料，压电方程以及压电传感器的等效电路。接着又介绍了两种压电式传感器。一是 PDVF 压电式传感即由一种新型压电材料 PDVF 薄膜制作的传感器，分别阐述了 PDVF薄膜的优点，压电特性，用其制作的正余弦压电式传感器以及 PDVF 压电式传感器测量振动梁的物理量的工作原理。二是 IEPE 压电加速传感器，包括加速传感器的优点，工作原理以及其在振动压路机振动测试中的应用。关键词：压电式传感；IEPE加速计；加速度传感器；PDVF压电模 AbstractThe piezoelectric sensor is a kind of typically spontaneous electricity sensor. It has the advantages of high sensitivity, wide frequency band, high signal-to-noise ratio, simple in structure, and reliable lightweight etc. And the piezoelectric sensors are constantly to intelligent development.This paper introduces the basic theory of piezoelectric sensors which are piezoelectric effect, piezoelectric materials, piezoelectric equation and piezoelectric sensor equivalent circuit. Then it introduces two kinds of piezoelectric sensors. One is PDVF piezoelectric sensor which is made by a new type of piezoelectric materials. It respectively explains the advantages of PDVF film, piezoelectric properties, cosine and sine PDVF piezoelectric sensor and the use of measuring vibrates beam. Another is IEPE piezoelectric sensor, including acceleration sensor accelerated the advantages,...
