毕业设计题目智能压力测量仪的研制学院自动化与电气工程学院专业电气工程及其自动化班级学生学号指导教师二〇一五年五月三十一日摘要本文介绍的是可调量程智能压力测量仪的设计。其功能主要是实现多量程的压力的检测，范围0~10-100MP。该压力测量仪的工作原理为，电阻应变式压力传感器采集的信号经过放大器放大后传送给ADC0809转换器，A/D将模拟信号转换为数字信号后送给89C51单片机。数据经由单片机处理后可由显示系统显示出具体的压力测量值。其中硬件部分还包括按键和AT24C02存储系统用于量程的调节。本文还包括软件流程设计，以及PCB板的绘制。关键词：89C51单片机；ADC0809；电阻应变式压力传感器；AT24C02存储器ABSTRACTThepaperintroducedthedesignoftheintelligentpressuremeter,witchhasthefunctionofregulatingrange.Itsmainfunctionistorealizethemultiplerangeofpressuretest,intherangeof0~10-100mp.TheworkingprincipleofpressuremeasuringinstrumentforresistancestraintypepressuresensoracquisitionsignalamplifieramplificationprocesswillbesenttoADC0809converter,A/Dconvertsanalogsignalstodigitalsignalssentafter89c51.Dataafterprocessedbysinglechipmicrocomputercanbedisplayedbythesystemshowsthespecificpressuremeasurements.ThehardwarepartincludesbuttonsandAT24C02storagesystemforregulatingrange.Thisarticlealsoincludesthesoftwareprocessdesign,aswellasthePCBdrawing.Keywords：89c51;ADC0809;Resistancestraintypepressuresensor;AT24C02memory目录摘要.................................................................................................................................IABSTRACT..........................................................................................................................II1.前言...............................................................................................................................11.1背景与发展...............................................................................................................11.2意义...........................................................................................................................12.工作原理.............................................................................................................................32.1整机工作原理...........................................................................................................32.2应变式传感器的工作原理.......................................................................................32.3应变式传感器的电桥原理.......................................................................................43.硬件电路结构设计图........................................................................................................53.1压力传感器...............................................................................................................53.1.1压力敏感元件.................................................................................................53.2放大模块...................................................................................................................63.3A/D转换模块...........................................................................................................73.4AT89C51单片机.......................................................................................................83.5显示模块...................................................................................................................93.6串行输出单元......................
