本文選題：虛擬儀器 + 遠(yuǎn)程測(cè)試��； 參考：《南京林業(yè)大學(xué)》2012年碩士論文

【摘要】：機(jī)械密封廣泛應(yīng)用于化工、水利以及船舶等領(lǐng)域，其性能直接影響相關(guān)設(shè)備的安全性與可靠性。機(jī)械密封技術(shù)的發(fā)展，要求有高性能的機(jī)械密封試驗(yàn)裝置與之相適應(yīng)。本課題將虛擬儀器技術(shù)及其網(wǎng)絡(luò)通信技術(shù)引入到機(jī)械密封性能試驗(yàn)裝置設(shè)計(jì)中，開(kāi)發(fā)了基于虛擬儀器技術(shù)的網(wǎng)絡(luò)化機(jī)械密封性能試驗(yàn)裝置測(cè)控系統(tǒng)。此系統(tǒng)不僅完成了對(duì)機(jī)械密封性能參數(shù)信號(hào)的采集、顯示、存儲(chǔ)與處理，還實(shí)現(xiàn)了遠(yuǎn)程監(jiān)控與測(cè)試數(shù)據(jù)的網(wǎng)絡(luò)共享。主要研究工作與結(jié)果如下： （1）基于機(jī)械密封性能試驗(yàn)的基本原理，結(jié)合虛擬儀器網(wǎng)絡(luò)化技術(shù)及測(cè)控系統(tǒng)的一般組成結(jié)構(gòu)，，提出了網(wǎng)絡(luò)化機(jī)械密封性能試驗(yàn)測(cè)控系統(tǒng)的設(shè)計(jì)流程； （2）依據(jù)LabVIEW2009的開(kāi)發(fā)環(huán)境特點(diǎn)，討論了網(wǎng)絡(luò)化機(jī)械密封性能測(cè)控系統(tǒng)的構(gòu)建方案。B/S模式非常靈活，是一種“瘦客戶(hù)”模式，但是在開(kāi)發(fā)深層次的功能時(shí)受限于瀏覽器通信方式；C/S模式可以充分利用服務(wù)器與客戶(hù)端的硬件資源，但是存在升級(jí)困難等缺點(diǎn)； （3）探討了機(jī)械密封性能參數(shù)的測(cè)量方法與傳感器輸出信號(hào)的種類(lèi)，完成了測(cè)控系統(tǒng)的硬件組裝調(diào)試。選擇了輸出浮地信號(hào)的傳感器和USB總線(xiàn)型采集卡，構(gòu)建了一個(gè)具有強(qiáng)抗干擾能力的差分式測(cè)量系統(tǒng)； （4）完成了機(jī)械密封性能試驗(yàn)測(cè)控軟件的開(kāi)發(fā)。基于模塊化設(shè)計(jì)理念，將滿(mǎn)足用戶(hù)功能要求的控制系統(tǒng)劃分成多個(gè)子程序來(lái)實(shí)現(xiàn)，在完成各個(gè)子VI的編寫(xiě)調(diào)試工作后，再由主程序動(dòng)態(tài)調(diào)用各子VI，最終實(shí)現(xiàn)了系統(tǒng)所需的信號(hào)采集、分析、顯示和存儲(chǔ)等功能； （5）對(duì)運(yùn)轉(zhuǎn)中的機(jī)械密封端面溫度進(jìn)行了探索式試驗(yàn)研究。采用指數(shù)擬合和多項(xiàng)式擬合兩種方法對(duì)由熱電偶測(cè)得的4路溫度信號(hào)進(jìn)行曲線(xiàn)擬合，選取誤差值小的擬合函數(shù)計(jì)算出密封端面的溫度。試驗(yàn)結(jié)果表明：一般工況下，機(jī)械密封端面溫度與被密封介質(zhì)的溫度基本持平，同時(shí)測(cè)得的溫度信號(hào)沿軸向服從多項(xiàng)式函數(shù)分布；而在特殊工況下，如干摩擦等工況下端面溫度會(huì)驟然升高，同時(shí)測(cè)得的溫度信號(hào)沿軸向服從指數(shù)函數(shù)分布； （6）通過(guò)對(duì)Web、TCP/IP和DataSocket三種技術(shù)優(yōu)缺點(diǎn)的試驗(yàn)比較，最終以DataSocket技術(shù)實(shí)現(xiàn)了系統(tǒng)的網(wǎng)絡(luò)化。Web技術(shù)無(wú)法實(shí)現(xiàn)測(cè)試數(shù)據(jù)的進(jìn)一步處理，TCP/IP技術(shù)編程復(fù)雜，DataSocket技術(shù)不但編程簡(jiǎn)便，而且易于將讀取到的數(shù)據(jù)進(jìn)行深入處理。在由DataSocket技術(shù)編寫(xiě)的系統(tǒng)中，服務(wù)器程序不需直接和客戶(hù)機(jī)通信，只需單獨(dú)加載一個(gè)獨(dú)立的DataSocket服務(wù)器，將數(shù)據(jù)發(fā)送至此服務(wù)器上，客戶(hù)端就可從該服務(wù)器讀取數(shù)據(jù)，從而達(dá)到遠(yuǎn)程測(cè)試的目標(biāo)。
[Abstract]:Mechanical seal is widely used in chemical engineering, water conservancy and ship, and its performance directly affects the safety and reliability of related equipment. With the development of mechanical seal technology, high performance mechanical seal test device is required. In this paper, the virtual instrument technology and its network communication technology are introduced into the design of mechanical seal performance test device, and the networked mechanical seal performance test device measurement and control system based on virtual instrument technology is developed. The system not only collects, displays, stores and processes the signals of mechanical seal performance parameters, but also realizes the network sharing of remote monitoring and testing data. The main research work and results are as follows: 1) based on the basic principle of mechanical seal performance test, combined with the network technology of virtual instrument and the general structure of measurement and control system, According to the characteristics of LabVIEW2009 development environment, this paper discusses the construction scheme of networked mechanical seal performance measurement and control system. It is a "thin client" mode, but it is limited by the browser communication mode C / S mode when developing deep functions, but it has some shortcomings such as the difficulty of upgrading. The measurement method of mechanical seal performance parameters and the type of sensor output signal are discussed. The hardware assembly and debugging of the measurement and control system are completed. A differential measurement system with strong anti-interference capability is constructed by selecting the sensor and USB bus data acquisition card, and the testing and controlling software of mechanical seal performance is developed. Based on the modular design concept, the control system that meets the user's functional requirements is divided into several subprograms. After the completion of each sub-VI programming and debugging work, Finally, the functions of signal acquisition, analysis, display and storage are realized. Finally, the temperature of the end surface of the mechanical seal in operation is studied experimentally. The four channel temperature signals measured by thermocouple were fitted by exponential fitting and polynomial fitting, and the temperature of seal face was calculated by selecting the fitting function with small error. The test results show that the temperature of the mechanical seal face is basically equal to that of the sealed medium under general working conditions, and the measured temperature signals are distributed along the axial direction according to the polynomial function. For example, under dry friction and other conditions, the end surface temperature will rise suddenly, and the measured temperature signals will be distributed along the axial orientation of the exponential function. (6) by comparing the advantages and disadvantages of the three technologies, WebTCPP / IP and DataSocket, Finally, the network. Web technology of the system can not realize the further processing of test data by DataSocket technology. It is not only simple to program, but also easy to deal with the read data deeply. In the system written by DataSocket technology, the server program does not need to communicate directly with the client, only need to load a separate DataSocket server separately, send the data to the server, the client can read the data from the server. In order to achieve the goal of remote testing.
【學(xué)位授予單位】：南京林業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類(lèi)號(hào)】：TP273;TH136

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 趙偉,張小牛,孟浩文;網(wǎng)絡(luò)化──測(cè)量技術(shù)與儀器發(fā)展的新趨勢(shì)[J];電測(cè)與儀表;2000年07期

2 趙偉,郝劍,張小牛;試論“網(wǎng)絡(luò)就是儀器”新概念[J];電工電能新技術(shù);2001年02期

3 付桂翠;鄒航;;虛擬儀器軟件體系結(jié)構(gòu)(VISA)[J];電子測(cè)量技術(shù);1997年01期

4 路林吉,饒家明;數(shù)據(jù)采集技術(shù)概論[J];電子技術(shù);2000年02期

5 陳大港 ,陳光(礻禹);網(wǎng)絡(luò)技術(shù)在分布式測(cè)試系統(tǒng)上的應(yīng)用[J];國(guó)外電子測(cè)量技術(shù);1999年04期

6 尹建新,楊欣榮;網(wǎng)絡(luò)化儀器綜述[J];工業(yè)儀表與自動(dòng)化裝置;2004年06期

7 應(yīng)懷樵;虛擬儀器與計(jì)算機(jī)采集測(cè)試分析儀器的發(fā)展和展望[J];測(cè)控技術(shù);2000年08期

8 周劍鋒,顧伯勤;機(jī)械密封試驗(yàn)機(jī)用傳感器選型及誤差分析[J];機(jī)床與液壓;2004年06期

9 劉念聰,李宏穆,孫未;網(wǎng)絡(luò)化虛擬儀器及其關(guān)鍵技術(shù)研究[J];機(jī)床與液壓;2005年05期

10 李繼容,鮑芳,馮燕;網(wǎng)絡(luò)化虛擬儀器技術(shù)及應(yīng)用[J];計(jì)量技術(shù);2003年02期

相關(guān)碩士學(xué)位論文 前4條

1 胡小云;機(jī)械密封端面信息采集及應(yīng)用[D];昆明理工大學(xué);2004年

2 吳明華;基于虛擬儀器的自動(dòng)測(cè)控系統(tǒng)設(shè)計(jì)與研究[D];南京理工大學(xué);2004年

3 廖和濱;機(jī)械密封環(huán)溫度場(chǎng)/應(yīng)力場(chǎng)的數(shù)值模擬及實(shí)驗(yàn)研究[D];福州大學(xué);2005年

4 李小吉;基于PC的機(jī)械密封試驗(yàn)臺(tái)的研制[D];浙江大學(xué);2007年

本文編號(hào)：2023408