学位论文—利用虚拟仪器开发平台lab-view.doc

摘要随着计算机技术与测量仪器技术的结合，促使了一种新的测量仪器—虚拟仪器的出现。虚拟仪器是一种功能意义上的仪器，由个人计算机、仪器硬件及应用软件组成。其基本工作原理是:先通过仪器硬件采集信号，然后通过软件编程来实现数据的显示及测量等功能。随着网络通信技术的发展，网络化虚拟仪器也应运而生，它是将虚拟仪器技术与网络通信技术相结合，从而实现网络化测量。本课题利用虚拟仪器开发平台LabVIEW和NI公司的数据采集卡设计了虚拟任意波形发生器和虚拟示波器。虚拟任意波形发生器能够实现任意波形载入、增益控制、直流偏置调节、滤波器状态设置等功能。虚拟示波器不但具有传统示波器的波形显示控制功能，而且还对传统示波器的功能进行了扩展，实现了参数自动测量显示、波形存储和频率响应分析等功能。最后，本文总结并以实例说明了LabVIEW实现网络通信的几种方法:TCP或UDP通信、DataSocket,WebServer及远程面板技术等。关键词:虚拟仪器，LabVIEW，任意波形发生器，示波器，DataSocketAbstractThecombinationofcomputertechnologyandmeasuretechnologymakeakindofnewmeasureinstrument--virtualinstruments.Virtualinstrumentsisakindofinstrumentsoffunctionalmeaning,itiscomposedofpersonalcomputer,hardwareandappliedsoftware.Thebasicprincipleisthehardwareacquiressingles,thenusingthesoftwaretorealizedatadisplayingandmeasurement.Alongwiththedevelopmentofcommunicationandnetworktechnology,thenetworkedvirtualinstrumentsappeared.Networkedvirtualinstrumentsimplementnetworkedmeasurement,whichistheoutcomeofvirtualinstrumentsintegratewithnetworkcommunicationtechnology.BasedonthesoftwareLabVIEWofvirtualinstrumentanddataacquisitioncardofNI,thevirtualarbitrarywaveformgeneratorandvirtualoscilloscopearedesignedinthisthesis.Thevirtualarbitrarywaveformgeneratorhassuchfunctionsasarbitrarywaveformloading,gaincontrolling,dcoffsetadjusting,filterssettingup.Thevirtualoscilloscopenotonlyhasthefunctionsachievedintraditionalscopesuchaswaveformdisplayandcontrol,butalsoachievessomeexpandedfunctions.Forexample,theparameterscanbemeasuredanddisplayedautomatically,thewaveformcanbesavedandthefrequencyresponsecanbeanalyzed.Ultimately,thisthesissumsupseveralmeansofLabVIEWtorealizecommunicationthroughnetworksuchasTCPorUDPcommunication,DataSocket,WebServerandremotepanelstechnology.Keywords:VirtualInstruments,LabVIEV,ArbitraryWaveformGenerator,Oscilloscope,DataSocket目录第1章绪论.........................................................11.1研究背景和课题的提出........................................11.2国内外研究现状综述..........................................11.3课题的主要工作和本文的主