毕业论文：脉冲信号参数测试仪

编号：毕业设计说明书题目：脉冲信号参数测试仪院（系）：电子工程与自动化学院专业：电子信息科学与技术学生姓名：xxxxxxxxxxxx学号：xxxxxxxxx指导教师：xxxxxxxxxxxxxx职称：xxxxxxxxxxxx题目类型：理论研究实验研究工程设计√工程技术研究软件开发2013年5月20日√桂林电子科技大学毕业设计（论文）报告用纸I摘要脉冲参数测试仪是在信号类常用的一种仪器，用它可以测量峰峰值、有效值、频率、上升沿和下降沿时间，占空比等的仪器。这种功能比较齐全的仪器现在大多数都是比较大型的台式的，手提便携式的功能还没那么完善，便携式的比较少，能测得东西也没那么多，而且便携式的测量精度没有台式的测量精度高。现在便携式的测量仪器普遍用的就是万用表，可以测量直流电压、电阻、电流、电容等等。本次是用超低功耗的控制芯片MSP430F5438A做为主控芯片，可以测量峰峰值、频率、占空比、上升沿和下降沿时间的参数，由于板子做得不怎么好，所以测的量精度不高。关键词：MSP430F5438A；脉冲信号参数测试仪；峰峰值；频率；占空比桂林电子科技大学毕业设计（论文）报告用纸IIAbstractThepulseparametertesterisaninstrumentcommonlyusedinthesignalclass，Itcanmeasurethepeak-to-peak,RMS,frequency,riseandfalltimes,thedutycycleoftheinstrument.Thisfunctionrelativelycompleteinstrumentnowmostofthemarerelativelylarge-scaledesktop,Hand-heldportablefunctionisnotsoperfect,portablearemuchfew,canbemeasurednotsomuchthings,themeasurementaccuracyofthedesktopandportablemeasurementaccuracyisnothigh.Nowportablemeasuringinstrumentscommonlyusedisthemultimeter,CanmeasureDCvoltage,resistance,current,capacitance,andsoon.TheusetheultralowpowercontrolchipMSP430F5438Aofasmasterchip,Canmeasurethepeak-to-peak,frequency,dutycycle,risingandfallingedgetimeparameters,theboardisdoingnotsogood,sothemeasurementaccuracyisnothigh.Keywords:MSP430F5438A;Pulsesignalparametertester;peak-to-peak;frequency;duty桂林电子科技大学毕业设计（论文）报告用纸I目录引言.......................................................................................................................11背景知识及系统设计要求.............................................................................11.1背景知识.............................................................................................................................11.2MSP430系列单片机介绍...................................................................................................21.3系统设计要求.....................................................................................................................21.4系统设计方案.....................................................................................................................22主要器件的选择及论证.................................................................................32.1微处理器的选择.................................................................................................................32.2比较器的选择.....................................................................................................................32.3占空比测量模块的选择.....................................................................................................42.4占峰峰值测量的设置.........................................................................................................43脉冲信号参数测试仪的硬件电路设计.........................................................43.1MSP430F5438A主控模块设计..........................................................................................43.1.1MSP430F5438A最小系统芯片部分..........................................................43.1.2MSP430F5438A最小系统I/O口部分......................................................63.1.3MSP430F5438A最小系统复位电路和仿真电路......................................73.2比较器电路.........................................................................................................................83.3峰值检波电路.....................................................................................................................93.4有效值测量电路...............................................................................................................103.5A/D模数转换电路............................................................................................................113.5D/A数模转换电路............................................................................................................124脉冲信号参数测试仪的软件设计...............................................................134.1脉冲信号参数测试仪的总体流程图...............................................................................135脉冲信号参数测试仪的调试过程...............................................................165.1硬件调试过程...................................................................................................................165.2软件调试过程...................................................................................................................186对系统的总结与展望...................................................................................216.1总结...................................................................................................................................216.2展望...................................................................................................................................21谢辞.................................................................................................................22参考文献.............................................................................................................23附录.................................................................................................................24桂林电子科技大学毕业设计（论文）报告用纸第1页共28页引言单片机微型计算机是计算机的一个很重要的分支，单片机微型计算机简称单片机，非常适用于自动化控制领域，所以又称为微控制器。单片机由集成电路芯片构成，内部包含了计算机的基本功能模