信息工程通信外文翻譯外文文獻(xiàn)英文文獻(xiàn)基于虛擬儀器的信號(hào)發(fā)生器的設(shè)計(jì)與實(shí)現(xiàn)(存儲(chǔ)版)
【正文】 e 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) 。傳統(tǒng)的信號(hào)發(fā)生器其功能完全靠硬件實(shí)現(xiàn)，功能單一而且用戶的購置、維護(hù)費(fèi)用高。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。 強(qiáng)大的 Inter 功能，支持常用網(wǎng)絡(luò)協(xié)議，方便網(wǎng)絡(luò)、遠(yuǎn)程測(cè)控儀器的開發(fā)。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。 2 虛 擬儀器的概念 虛擬儀器 (Virtual Instrument，簡(jiǎn)稱 VI)的概念是由美國(guó)國(guó)家儀器公司 (NI)在 20 世紀(jì) 80 年代最早提出的。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)。函數(shù)信號(hào)發(fā)生器是在科學(xué)研究和工程設(shè)計(jì)中廣泛應(yīng)用的一種通用儀器。 圖形化程序設(shè)計(jì)編程簡(jiǎn)單 、直觀、開發(fā)效率高。而且，隨著測(cè)試儀器的數(shù)字化、計(jì)算機(jī)化的發(fā)展趨勢(shì)，傳統(tǒng)測(cè)試儀器漸漸有被取代的趨勢(shì)。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 購買新的儀器，傳統(tǒng)信號(hào)發(fā)生器的不足是顯而易見的。 譯 文 The generation background of virtual instrument Today we are in a highly developed information society, which require a limited time and space to achieve a large amount of information exchange, inevitably bring about the rapid increase of information density， required the electronic systems have a faster speed and more powerful function for information processing. On the one hand the development of electronic technology and market requirements objectively make the test instrument develop to the direction of automation and flexible, On the other hand, the electronic technology and market development also make virtual instrument possible. In this situation, the virtual instruments based on microputer gradually bee a reality, its appearance and extensive
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