资源描述：
《基于FPGA的频率计的设计【毕业论文】》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、本科毕业设计（20届）基于FPGA的频率计的设计摘要在电子技术中，频率是最基本的参数之一，并且与许多电参量的测量方案、测量结果都有十分密切的关系，因此频率的测量就显得更为重要。数字频率计是数字电路的一个典型应用，由于硬件的关系，往往测量误差较大。论文介绍一种基于VHDL语言的FPGA技术的数字频率计，用十进制数码管显示被测信号的频率。文章首先对频率进行简单介绍，分析频率计方案分析；然后对VHDL语言和FPGA的各种设计方案进行了分析与比较。最后确定用FPGA来做本文的实验方案。文章又对各种测频率法进行了介绍，最后选择了直接测量
2、频率法。第四章是文章重点，详细介绍了频率计的硬件设计和软件设计。文章的最后是对频率计的调试。关键词：FPGA；VHDL；EDA；频率计AbstractInelectronics,thefrequencyisoneofthemostbasicparameters,andwithmanyelectricalparametersmeasurementprogram,measurementresultsareverycloselyrelated,sothefrequencyofmeasurementbecomesevenmoreimp
3、ortant.Digitalfrequencymeterisadigitalcircuitinatypicalapplication,becauseofhardware,itwillhaveagreaterdelay,Thepaperintroducedthatonefrequency,basedonVHDLlanguageFPGAthetechnicaldigitalfrequencymeter,measuredthesignalwiththedecimalbasedemonstrated.Thearticlefirstin
4、troducesthefrequency,describedthesignificanceresearchonthisissueandtheapplicationbackground.AndareintroducetheVHDLlanguageandFPGAonthebasics,suchasstructuralfeatures,developmentprocessanddevelopmentenvironment,andproposetheplanbasedonVHDLlanguageFPGA.Dividedthewhole
5、systemintothefrequencydivision,thecounting,thelocktheoverallsystemtosave,thedecodingandthedemonstration,thefourmodules,thepaperelaboratesindetailsforeachmodule,ondesignconcept,thekeyprogramprocessdiagramandtheessentialsimulationresult,carriesonjointingshakedowntesti
6、ngtoeachmodulefinally,ittakestheDEIIplatformasthegoalboardtosave,translationanddownloading,successtorealizetheoverallsystem,andsurveyedthedelayerrorlessthan1Hz.KeyWords:FPGA;VHDL;EDA;Frequencymeter目录1引言.............................................................12频
7、率计方案分析...................................................22.1设计要求.....................................................22.2方案分析.....................................................23频率测量方法.....................................................43.1直接测频法.................
8、..................................43.2直接测周期...................................................43.3等精度测量原理.................................
