虛擬信號發(fā)生器設(shè)計(jì)及遠(yuǎn)程實(shí)現(xiàn)

電子機(jī)電論文編號:JD885  附開題報(bào)告,任務(wù)書,源代碼,外文翻譯,論文字?jǐn)?shù):18824,頁數(shù):31

  摘要 
1.緒論  1
1.1虛擬儀器背景介紹  1
1.2虛擬儀器系統(tǒng)的構(gòu)成  1
1.2.1虛擬儀器的構(gòu)建技術(shù)  1
1.2.2虛擬儀器的硬件組成  2
1.2.3虛擬儀器的軟件結(jié)構(gòu)  2
1.3虛擬儀器與傳統(tǒng)儀器的比較  3
1.4本課題的重要意義  3
2. 構(gòu)建虛擬信號發(fā)生器的基礎(chǔ)  3
2.1測量用信號源的作用與分類  3
2.2正弦信號發(fā)生器的組成  4
2.3正弦信號發(fā)生器的主要性能指標(biāo)  5
2.4傳統(tǒng)函數(shù)信號發(fā)生器的工作原理  7
2.5基于虛擬儀器技術(shù)的信號發(fā)生器的設(shè)計(jì)和應(yīng)用  9
2.5.1 虛擬信號發(fā)生器的提出  9
2.5.2 虛擬信號發(fā)生器的設(shè)計(jì)  9
2.5.3 虛擬信號發(fā)生器的應(yīng)用  10
3.虛擬函數(shù)信號發(fā)生器的實(shí)現(xiàn)  10
3.1 LabVIEW簡介  10
3.2實(shí)現(xiàn)方案  10
3.2.1系統(tǒng)的總體設(shè)計(jì)思路介紹  10
3.2.2虛擬函數(shù)信號發(fā)生器的用戶界面  11
3.2.3虛擬函數(shù)信號發(fā)生器的程序圖設(shè)計(jì)  12
3.3虛擬函數(shù)信號發(fā)生器的各子模塊設(shè)計(jì)  13
3.3.1數(shù)字波形產(chǎn)生模塊  13
3.3.2頻率單位變化控制模塊  16
3.3.3相位變化控制模塊  17
3.3.4.數(shù)據(jù)存儲模塊  18
3.4儀器功能描述  19
4.虛擬儀器的遠(yuǎn)程實(shí)現(xiàn)  19
4.1遠(yuǎn)程虛擬儀器系統(tǒng)介紹  19
 4.1.1遠(yuǎn)程虛擬儀器系統(tǒng)的概念  19
4.1.2遠(yuǎn)程虛擬儀器國內(nèi)外發(fā)展的現(xiàn)狀  19
4.2 遠(yuǎn)程虛擬儀器系統(tǒng)的開發(fā)方案  20
4.2.1 Socket技術(shù)概述  20
4.2.2Socket網(wǎng)絡(luò)通信機(jī)制  21
4.2.3服務(wù)器端程序的開發(fā)  22
4.2.4客戶端程序的開發(fā)  23
4.3遠(yuǎn)程虛擬儀器系統(tǒng)的實(shí)現(xiàn)  25
4.3.1遠(yuǎn)程虛擬儀器的網(wǎng)絡(luò)結(jié)構(gòu)及組成  25
4.3.2遠(yuǎn)程虛擬儀器的網(wǎng)絡(luò)結(jié)構(gòu)  27
4.3.3基于web的虛擬儀器  27
5結(jié)論  28
參考文獻(xiàn)  30

摘要: 虛擬儀器是由一些必要的硬件獲取調(diào)理信號，并以通用計(jì)算機(jī)為平臺，實(shí)現(xiàn)不同測量軟件對采集獲得信號進(jìn)行分析處理及顯示。它改變了傳統(tǒng)電子測量儀器的概念和模式，用戶完全可以自己定義儀器的功能和參數(shù)，即“軟件既是儀器”。計(jì)算機(jī)技術(shù)與網(wǎng)絡(luò)技術(shù)的飛速發(fā)展，使得虛擬儀器已經(jīng)成為現(xiàn)代電子測量儀器發(fā)展的趨勢。
本文介紹了一種以LabVIEW為開發(fā)平臺，能夠產(chǎn)生正弦波、三角波、方波、鋸齒波和任意波測試信號發(fā)生器，其平率、幅值、相位、電壓偏置等參數(shù)可以設(shè)置，不但輸出波形參數(shù)可調(diào)、而且可同步顯示。本系統(tǒng)通過采用TCP/IP技術(shù)來實(shí)現(xiàn)遠(yuǎn)程數(shù)據(jù)傳輸功能，當(dāng)兩臺計(jì)算機(jī)設(shè)置好端口后，就可以進(jìn)行數(shù)據(jù)傳輸。
與傳統(tǒng)儀器相比，本系統(tǒng)具有高效、開放、使用靈活、功能強(qiáng)大、性價(jià)比高、可操作性好等明顯優(yōu)點(diǎn)，可用于醫(yī)療，工程等精密儀器的測試，具有較強(qiáng)的實(shí)用性和開發(fā)價(jià)值。
關(guān)鍵詞:虛擬儀器; Labview; 函數(shù)信號發(fā)生器;網(wǎng)絡(luò)通信

The design of virtual signal generator and remote reslization
Abstract: The virtual instrument which conditioning signals is gained by some essential hardware. It takes the general-purpose computer as a platform and the signal is realized through the different measurement software, such as signal’s analyze, process and display etc. The concept and mode of traditional measuring instruments are changed, the parameters and functions can be transformed by the user, namely, "software is the instrument". With the rapid development of computer and network technology, the virtual instrument has become a developing trend of modern electronic measuring instruments.
In this paper development platform LabVIEW is introduced firstly, then the test signals of Sine, triangle, square sawtooth and arbitrary waveform is described in the virtual signal generator. The functions of signal generator are set, such as frequency, amplitude, phase, voltage bias etc. Not only output parameters can be adjusted but also the corresponding wave is acquired simultaneously in this system. The function of remote data transmission is performed by TCP/IP technology. Data is transported when the port parameters between two computers are set. 
Compared with traditional machines, advantages of the virtual instrument are showed in efficiency, opening, easy using, strong function, cost-effective and operation etc. It can be used for testing of medical and engineering precision instruments.

Key words：Virtual instrument，LabVIEW， Function generator，Network Communication