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硕士研究生课程《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发展趋势学院：自动化工程学院年级专业：姓名：任课教师：2011年5月20日压电式传感器的国内外现状及发展趋势TheCurrentSituationandTendencyofPiezoelectricSensoratHomeandAboard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发展。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AbstractThepiezoelectricsensorisakindoftypicallyspontaneouselectricitysensor.Ithastheadvantagesofhighsensitivity,widefrequencyband,highsignal-to-noiseratio,simpleinstructure,andreliablelightweightetc.Andthepiezoelectricsensorsareconstantlytointelligentdevelopment.Thispaperintroducesthebasictheoryofpiezoelectricsensorswhicharepiezoelectriceffect,piezoelectricmaterials,piezoelectricequationandpiezoelectricsensorequivalentcircuit.Thenitintroducestwokindsofpiezoelectricsensors.OneisPDVFpiezoelectricsensorwhichismadebyanewtypeofpiezoelectricmaterials.ItrespectivelyexplainstheadvantagesofPDVFfilm,piezoelectricproperties,cosineandsinePDVFpiezoelectricsensorandtheuseofmeasuringvibratesbeam.AnotherisIEPEpiezoelectricsensor,includingaccelerationsensoracceleratedtheadvantages,workingprincipleandtheapplicationofvibrationcompactingrollertest.Keywords：piezoelectricsensor,IEPEacceleration,accelerationsensor,PDVFfilm目录第1章绪论..........................................................................................................................................11.1压电传感器的特点及发展..........................................................................................................11.2压电传感器的国内外发展现状..................................................................................................11.3智能传感器的产生与发展前景...................................................................................................2第2章压电传感器的理论基础..........................................................................................................42.1压电传感器的基本特性................................................................................................................42.1.1压电效应.................................................................................................................................42.1.2压电材料.................................................................................................................................52.1.3压电方程与压电常数.............................................................................................................52.2压电式传感器的等效电路............................................................................................................82.3压电式传感器的信号变换电路....................................................................................................92.3.1变换电路的必要性.................................................................................................................92.3.2电压放大器...........................................................................................................................102.3.3电荷放大器...........................................................................................................................12第三章PDVF压电传感器..................................................................................................................133.1PVDF压电薄膜........................................................................................................................133.1.1PVDF压电薄模的压电方程...............................................................................................133.1.2PVDF压电薄膜制作传感器的理论分析............................................................................143.2PVDF压电传感器的设计...........................................................................................................173.2.1梁的弯曲波..........................................................................................................................173.2.2振动粱的基本物理量...........................................................................................................193.3传感器的设计.............................................................................................................................193.3.1形状设计..............................................................................................................................193.3.2正弦传感器的设计...............................................................................................................203.3.3余弦传感器的设计..............................................................................................................203.4正余弦传感器测量物理量的原理..............................................................................................22第四章压电加速传感器......................................................................................................................244.1压电式加速度传感器的基本概念..............................................................................................244.2加速度传感器的工作原理.....................................................................................