电阻电容电感测仪的设计九江学院学士学位论文PAGE\*MERGEFORMATIIPAGE\*MERGEFORMATIIIPAGE\*MERGEFORMATI毕业论文（设计）题目电阻电容电感测仪的设计英文题目Inductancecapacitanceresistancetester院系专业姓名年级指导教师年月摘要摘要内容：本设计是一种基于单片机(89C51)的高精度电阻电感电容测量仪器的设计.本设计采用MAX038单片压控函数发生器产生高精度的正弦波信号流经待测的电容或者电感和标准电阻的串连电路,利用电压比例计算的方法推算出电容值或者电感值,利用51单片机控制测量和计算结果,采用1602液晶模块实时显示数值,可以手动调节量程,正弦信号发生器可以实现幅值和频率的调整,为了提高精度,我们把被测的交流电压先通过ICL7650来消除因为AD637输入电阻较低产生的误差.实验测试结果表明,本设计性能稳定,测量精度高。关键词：电压比例法;89C51;AD637;1602液晶;DesignofinductancecapacitanceresistancetesterABSTRACTAbstractcontent:Thedesignisthedesignofahigh-precisioninstrumentforRLCmeasurementbasedonmicrocontroller(89C51).ThisdesignadoptedMAX038monolithicvoltage-controlledfunctiongeneratortoproducehighaccuracysinewavesignal,whichpassedthroughtheseriescircuitofthecapacityorinductanceandstandardresistance,andthenmeasuredtherespectivevoltageofthecapacityortheinductanceandthestandardresistance.Usingthevoltageproportionmethodcalculatedthecapacitancevaluesorinductancevalues.Thedesignused51microcontrollertocontrolthemeasurementandcalculationresults,used1602LCDtoshowtheresult.Therangecanbeadjustedmanually,sinesignalgeneratorcanadjustamplitudeandfrequencytoimproveaccuracy,wemeasuredtheACvoltagethroughtheICL7650toeliminatetheerrorcausedbythelowerinputresistanceofAD637.Experimentalresultsshowthattheperformanceofthisdesignisstableandofhighmeasurementaccuracy.Keywords:Voltageproportionmethod;89C51;AD637;1602LCD;PAGE\*MERGEFORMATIVPAGE\*MERGEFORMAT3目录TOC\o"1-2"\h\z\uHYPERLINK\l"_Toc318124715"第一章引言PAGEREF_Toc318124715\h1HYPERLINK\l"_Toc318124716"第二章电压比例法测量原理2HYPERLINK\l"_Toc318124717"第三章系统方案4HYPERLINK\l"_Toc318124718"3.1系统总体方案设计与结构框图4HYPERLINK\l"_Toc318124719"3.2方案设计与论证4HYPERLINK\l"_Toc318124718"3.2.1电阻电感电容测试采样模块4HYPERLINK\l"_Toc318124718"3.2.2正弦信号发生器模块5HYPERLINK\l"_Toc318124719"3.2.3显示模块6HYPERLINK\l"_Toc318124720"第四章硬件电路7HYPERLINK\l"_Toc318124721"4.1稳压电源模块7