搜索
本科生毕业论文（设计）题目：基于单片机的数字电流表的设计学院电子信息工程学院学科门类工学专业电子信息工程学号指导教师2015年05月30日2015届本科生毕业论文（设计）I摘要随着时代的进步，电子科学技术的日益更新，传统电工电子测量仪器——模拟测量仪表即使可以直观地从刻度盘读出表针偏转了多少格或占了满刻度的百分之几等，也满足不了对测量数据的精确要求，那么就需要更高、更准精度的仪器来替代。同时传统的模拟测量仪表在计算时需要对读数加以换算和说明，而且不同的观察者会带来不同的人为“视差”，即使同一个观察者处于不同的位置也可能会得到不同的结果和偏差。然而，数字电流表就能够克服这些问题，它的测量结果直接以数字的形式在显示屏上显示出来。数字电流表不仅具有读数准确，设计简单，随身携带的优点,而且操作方法简单，人们使用起来也非常方便，这些优点使数字电流表在近年来的电工电子的测量中应用更加广泛。本文基于AT89C51单片机，论述数字电流表的工作原理及设计过程。利用Protel软件设计、KeilC软件和Proteus仿真软件，根据所给数字电流表的技术指标和要求，确定电流表所需的元器件和最佳设计方案，这种方法简单易行，最终得到比较理想，符合设计要求的数字电流表。关键词：C51单片机；A/D转换器；数字电流表2015届本科生毕业论文（设计）IIAbstractWiththeprogressoftime,increasinglyupdatingelectronicscienceandtechnology,traditionalelectricandelectronicmeasuringinstruments-analoguemeasurementinstruments,evenintuitivelyreadfromthedialhandsdeflectedthenumberofcellsoraccountedforafewpercentoffullscale,alsocannotmeettheexactrequirementsofthemeasureddata,thenyouneedhigherprecisionandmoreaccurateinstrumentinstead.Whiletraditionalanalogmeasuringinstrumentsneedtobeconvertedinthecalculationanddescriptionofthereadings,anddifferentobserverswillbringadifferentman,parallax,evenifthesameobserverindifferentlocationsmaygetdifferentresultsanderror.However,thedigitalmeterwillbeabletoovercometheseproblems,itsmeasurementresultsindigitalformdirectlyonthescreenout.Digitalammeterreadingisnotonlyaccurate,simpledesign,theadvantagesofportable,andsimplemethodofoperation,itisalsoveryeasytouse,theseadvantagesmakedigitalammeterinelectricandelectronicmeasuringmorewidelyinrecentyears.BasedonAT89C51microcontroller,digitalammeterdiscussedtheworkingprincipleanddesignprocess.UseProtelsoftwaredesign,KeilCsoftwareandProteussimulationsoftware,dependingonthedigitalammetertechnicalindicatorsandrequirements,determinetherequiredcomponentsandammeterbestdesign,thismethodissimple,andultimatelygettheideal,inlinewithDigitalammeterdesignrequirements.Keywords:C51microcontrollerdigitalammeter;A/Dconverter;digitalammeter2015届本科生毕业论文（设计）III目录摘要..................................................................................................................................IAbstract..............................................................................................................................II目录...............................................................................................................................III1．引言...............................................................................................................................11.1研究背景及意义..............................................................................................11.2国内外研究现状..............................................................................................21.3本文主要内容安排..........................................................................................22．数字电流表的理论.................................................................................................22.1数字电流表的工作原理................................................................................22.2A/D转换器........................................................................................................32.3AT89C51单片机..............................................................................................52.4液晶显示器........................................................................................................83．数字电流表的设计.................................................................................................93.1方案论证............................................................................................................93.2任务指标..........................................................................................................103.3整体电路图......................................................................................................104．软件设计....................................................................................................................114.1软件设计的主程序流程图...........................................................................114.2编程语言介绍..................................................................................................114.3Protel99SE软件的介绍...............................................................................125．系统调试及实物制作..........................................................................................135.1硬件系统的调试............................................................................................135.2系统软件的调试............................................................................................135.3整体系统的调试............................................................................................145.4实际硬件制作结果........................................................................................146．总结与展望..............................................................................................................14参考文献..........................................................................................................................16致谢...................................