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ID:32557049
大小:9.01 MB
页数:62页
时间:2019-02-12
《基于等效采样数字存储示波器设计和实现论文》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、摘要数字存储示波器在电子行业的各个领域中扮演着重要的角色。本论文以现场可编程门阵列(FPGA)作为主控制器,采用等效采样技术、虚拟仪器技术,通过模拟电路设计、数字逻辑设计以及软件编程设计,实现了一款基于等效采样的多功能可控的数字存储示波器。论文首先对数字示波器的工作原理进行了分析,对基于等效采样的采样方式进行了详细的介绍,并深入讨论了几种等效采样方案的实现原理。通过对方案进行可行性分析,本文采用FPGA+硬件电路设计的结构来实现整个系统的设计,并对系统的模块设计、硬件电路进行了详细的描述和讨论。在数字逻辑
2、设计中,采用了QuartusII11.0开发工具,实现了控制电路模块的设计及仿真分析。最后在LabWindows/CVI平台上开发了系统的应用程序。在实际应用中对整个系统进行了详细的测试,通过对系统硬件、软件程序的不断完善,达到了设计目标。关键词:等效采样数字示波器FPGA虚拟仪器AbstractDigitalstorageoscilloscopeplaysamoreandmoreimportantroleineveryareaoftheelectronicsindustry.Bycombiningsam
3、plingprinciple,virtualinstrumenteffectively,alowcost,portable,extensibleandmultifunctionaldigitalstorageoscilloscopesystembasedonequivalentsamplingwhichhasbeenrealized.FPGAprovidesthehardwarefoundationforthedesignandthemaincontentsconsistofanalysiscircuit
4、design,digitallogicdesignandsoftwaredesign.Thestudyprovidesadetailedanalysisofprincipleoftheequivalentsamplingandputforwardseveralfeasibleimplementations.Withdeeplyanalysisandcomparisonofthesemethods,adesigncombinationofFPGAandhardwarecircuitisusedtoreali
5、zethesystem.AndthenfldetaileddescriptionofthesystemdesignisprovidedtOdiscussthemodulesrespectivelyandconcretecircuitdesign.QuartusIIdeveloptoolisemployedtodesignandsimulatetheDigitallogiccircuitintheFieldProgrammableGateArrayinwhichtheequivalentsamplingde
6、signandmodulecontrolincluded.Finally,userapplicationprogramisrealizedwithLabWindows/CVI,bywhichwecanviewandmeasurethesignalwaveform,andcontrolthesignalsamplingprocessbysendingcommandtothehardwarecircuitboard.Thedigitalstorageoscilloscopesystemiselaboratel
7、ytestedinthepracticalapplication,andeveryfunctiononthecontrolpanelischeckedindetail.Inthetestingprocess,manytechnicaldifficultiesaresurmountedandthehardwarecircuitandthesoftwareprogramarebothimprovedbyhandlingtheerrorsandproblems.Andfinallythesystemdigita
8、lstorageoscilloscopeperformsverywellandachievesinitialdesignrequirements.Keywords:EquivalentSamplingDigitalStorageOscilloscopeFPGAVirtualInstrument第一章绪论1.1引言在电子技术领域,常常需要对信号的波形、频率、幅度等进行测量,或者要观察某段时间的型号波形,这就需要用到一种电子仪器—
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