【正文】 在生產(chǎn)實(shí)踐和科技領(lǐng)域中有著廣泛的應(yīng)用 。 囊括了 DAQ, GPIB, PXI, VXI, RS232/485 在內(nèi)的各種儀器通信總線標(biāo)準(zhǔn)的所有功能函數(shù)，使得不懂總線標(biāo)準(zhǔn)的開發(fā)者也能夠驅(qū)動(dòng)不同總線標(biāo)準(zhǔn)接口設(shè)備與儀器。一方面電子技術(shù)及市場(chǎng)的發(fā)展從客觀上要求測(cè)試儀器向自動(dòng)化及柔性化的方向發(fā)展，另一方面，電子技術(shù)及市場(chǎng)的發(fā)展也給虛擬儀器的產(chǎn)生提供了可能。 提供了豐富的數(shù)據(jù)采集、分析及存儲(chǔ)的庫(kù)函數(shù)。當(dāng)前應(yīng)該解決的是如何使虛擬儀器和現(xiàn)有儀器配合，挖掘現(xiàn)有儀器的潛力，達(dá)到逐步淘汰和取代傳統(tǒng)儀器的目的。更重要的是，對(duì)于傳統(tǒng)的信號(hào)發(fā)生器，其功能一旦確定便不能更改，用戶要想使用新的功能則必須重新 購(gòu)買新的儀器，傳統(tǒng)信號(hào)發(fā)生器的不足是顯而易見(jiàn)的。 圖形化程序設(shè)計(jì)編程簡(jiǎn)單 、直觀、開發(fā)效率高。虛擬儀器就是在以通用計(jì)算機(jī)為核心的硬件平臺(tái)上，由用戶設(shè)計(jì)定義、具有虛擬前面板、測(cè)試功能由測(cè)試軟件實(shí)現(xiàn)的一種計(jì)算機(jī)儀器系統(tǒng)。目前，該開發(fā)軟件在國(guó)際測(cè)試、測(cè)控行業(yè)比較流行，在國(guó)內(nèi)的測(cè)控領(lǐng)域也得到廣泛應(yīng)用。在電工電子實(shí)驗(yàn)室的建設(shè)中，實(shí)驗(yàn)室常規(guī)設(shè)備有的已經(jīng)老化，有的技術(shù)上有些落后，在當(dāng)前學(xué)校經(jīng)費(fèi)較少的情況下，如果配置常規(guī)儀器、儀表，學(xué)校財(cái)力難以支付，也不符合目前學(xué)校的實(shí)際。 . The virtual instrument is a kind of Computer equipment system which based on the general purpose puter as the core hardware platform, defined by the user with a virtual front panel, the test function is performed by a puter testing software. The core idea is to use a powerful puter resources that would otherwise require hardware to software of the technology in order to minimize system cost, enhance system functionality and flexibility. The virtual instrument represents the fundamental changes from traditional hardwarebased test system to Softwarecentric test system. The emergence of virtual instrument is a revolution in the history of instruments, it represents the latest development direction and trend of instrument, produced an immeasurable influence on the development of science and technology and industrial production progress. Virtual instrument have many advantages, such as high performance, scalability, strong, development time is short and seamless integration. graphical virtual instrument development platformLABVIEW introduction and its advantages LABVIEW is short for Laboratory Virtual Instrument Engineering Workbench, it is a powerful and flexible instrumentation and analysis of application development tool created by National Instruments (National instruments, IN) 。 隨著計(jì)算機(jī)軟硬件技術(shù)、通信技術(shù)及網(wǎng)絡(luò)技術(shù)的發(fā)展，給虛擬儀器的發(fā)展提供了廣闊的天地，國(guó)內(nèi)外儀器界正看中這個(gè)大市場(chǎng)。虛擬儀器的出現(xiàn)是儀器發(fā)展史上的一場(chǎng)革命，代表著儀器發(fā)展的最新方 向和潮流，對(duì)科學(xué)技術(shù)的發(fā)展和工業(yè)生產(chǎn)的進(jìn)步將產(chǎn)生不可估量的影響。虛擬儀器具有性能高、擴(kuò)展性強(qiáng)、開發(fā)時(shí)間短、無(wú)縫集成等優(yōu)勢(shì)。測(cè)控儀器將會(huì)向高效、高速、高精度和高可靠性以及自動(dòng)化、 智能化和網(wǎng)絡(luò)化的方向發(fā)展。 Labview is a graphical programming language, mainly used to develop data acquisition, instrument control and data processing and analysis software. Cur