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1、基于LabVIEW的電信號(hào)分析采集系統(tǒng)38摘要隨著計(jì)算機(jī)技術(shù)的迅速發(fā)展，虛擬儀器正逐漸成為測(cè)控領(lǐng)域的發(fā)展方向。本設(shè)計(jì)以個(gè)人計(jì)算機(jī)和數(shù)據(jù)采集卡為主要硬件,以L(fǎng)abVIEW軟件為開(kāi)發(fā)平臺(tái),創(chuàng)建了實(shí)現(xiàn)信號(hào)采集與信號(hào)分析的多功能的虛擬儀器系統(tǒng),該系統(tǒng)能夠?qū)Σ杉蟮男盘?hào)進(jìn)行一些時(shí)域分析和頻域分析。此外，由于數(shù)據(jù)采集卡一般都有多個(gè)模入通道，所以通過(guò)數(shù)據(jù)采集卡驅(qū)動(dòng)程序控制采集卡可以實(shí)現(xiàn)多通道的數(shù)據(jù)采集。因此使用LabVIEW進(jìn)行數(shù)據(jù)采集十分簡(jiǎn)單、方便。通常只要使用NI公司提供的NI-DAQmx數(shù)據(jù)采集卡驅(qū)動(dòng)程序，再結(jié)合數(shù)據(jù)采集設(shè)備可方便地實(shí)現(xiàn)數(shù)據(jù)采集。關(guān)鍵詞：LabVIEW，數(shù)據(jù)采集卡，信
2、號(hào)分析，NI-DAQmx基于LabVIEW的電信號(hào)分析采集系統(tǒng)38ABSTRACTWiththerapiddevelopmentofcomputertechnology，Virtualinstrumentisbecomingthedirectionofdevelopmentsinthefieldofmeasurementandcontrol.Thedesignofthepersonalcomputer,anddataacquisitioncardasthemainhardware，LabVIEWsoftwaredevelopmentplatform,Createamulti-
3、functionvirtualinstrumentsystemforsignalacquisitionandsignalanalysis,Thesystemiscapableofthepost-acquisitionsignalanalysisoftimedomainandfrequencydomainanalysis.Inaddition,dataacquisitioncardsgenerallyhavemorethanonemodeintothechannel,Sothroughdataacquisitioncarddrivercontrolacquisitioncard
4、canrealizemulti-channeldataacquisition.UsingLabVIEWdataacquisitionisverysimpleandconvenient.UsuallyaslongastheuseofNI-DAQmxdatacollectiondriverprovidedbytheNIcompany,combinedwiththedataacquisitionequipmentcaneasilyachievedatacollection.Keyword:LabVIEW，Dataacquisitioncard，Signalanalysis，NI-D
5、AQmx基于LabVIEW的電信號(hào)分析采集系統(tǒng)38目錄1緒論-------------------------------------------------------------------------------------------------------------------11.1數(shù)據(jù)采集分析系統(tǒng)的研究--------------------------------------------------------------11.2系統(tǒng)主要特點(diǎn)-----------------------------------------------------------
6、-------------------42系統(tǒng)的設(shè)計(jì)及原理------------------------------------------------------------------------------112.1系統(tǒng)實(shí)現(xiàn)的主要功能----------------------------------------------------------------------------------112.2系統(tǒng)的結(jié)構(gòu)及其原理--------------------------------------------------------------------------
7、--------113系統(tǒng)硬件設(shè)計(jì)-----------------------------------------------------------------------------133.1傳感檢測(cè)模塊----------------------------------------------------------------------------------133.2信號(hào)調(diào)理模塊--------------------------------------------------------
