基于虛擬儀器的多功能信號(hào)發(fā)生器設(shè)計(jì)畢業(yè)論(已修改)
2025-06-23 08:08 本頁面
【正文】 平頂山學(xué)院畢業(yè)論文設(shè)計(jì)說明書 基于虛擬儀器技術(shù)的多功能信號(hào)發(fā)生器設(shè)計(jì) 摘 要 虛擬儀器技術(shù)是將儀器技術(shù)、計(jì)算機(jī)技術(shù)、總線技術(shù)和軟件技術(shù)緊密的融合在一起，利用計(jì)算機(jī)強(qiáng)大的數(shù)字處理能力實(shí)現(xiàn)儀器的大部分功能，打破了傳統(tǒng)儀器的框架，形成的一種新的儀器模式。 本設(shè)計(jì)采用 NI USB6211 數(shù)據(jù)采集卡，將虛擬儀器技術(shù)用于多功能信號(hào)發(fā)生器的設(shè)計(jì)。該系統(tǒng)具有生成正弦波、方波、三角波、鋸齒波及 PWM(Pulse Width Modulation)波的功能。 本文首先概述了信號(hào)發(fā)生器及虛擬儀器技術(shù)在國內(nèi)外的發(fā)展及趨勢(shì)，然后介紹了信號(hào)發(fā)生器的相關(guān)理 論及信號(hào)發(fā)生器的基本原理框圖，并探討了虛擬儀器的總線及其標(biāo)準(zhǔn)、框架結(jié)構(gòu)、 LABVIEW 開發(fā)平臺(tái)。在分析本系統(tǒng)功能需求的基礎(chǔ)上，介紹了數(shù)據(jù)采集卡、 LABVIEW 的編程模式等設(shè)計(jì)中所涉及到的硬件和技術(shù)。證明本文很有參考價(jià)值。 關(guān)鍵詞 ： 虛擬儀器 ， 數(shù)據(jù)采集卡 ， 信號(hào)發(fā)生器 ， LABVIEW The design of multifunctional signal generator base on virtual instrument technology ABSTRACT Virtual instrument technology is formed by the instrument technology, puter technology, bus technology and software technology. Powerful digital processing’s ability of puter is used to achieve the main functions of instrument. Virtual instrument broke the framework of the traditional instruments, and built a new device model. This design uses NI USB6211 data acquisition card. The virtual instrument technology has been utilized in the design of multifunctional signal generator. The system has ability to produce sine wave, square wave, and triangle wave, saw tooth wave and PWM (Pulse Width Modulation) wave. This article summarizes the development and trend of the signal generator and virtual instrument at home and abroad at first. And then introduces the 平頂山學(xué)院畢業(yè)論文設(shè)計(jì)說明書 theory of signal generator and gives a basic block diagram of signal generator, also the frame structure and LABVIEW development platform of the virtual instrument with the inquiry of the bus’ s standard. Based on the analysis of this system’s functional requirem ents, this article introduces the hardware and technology which involved in design of the data acquisition card and the LABVIEW programming modes. Testify this article have great reference value. Key Words： Virtual Instruments， Data Acquisition Cards， Signal Generators， LABVIEW 平頂山學(xué)院畢業(yè)論文設(shè)計(jì)說明書 目錄 第一章 緒論 ............................................................ 1 引言 .............................................................. 1 信號(hào)發(fā)生器的發(fā)展史 ............................................ 1 虛擬儀器的發(fā)展趨勢(shì) ............................................ 2 課題的主要任務(wù) ............................................... .3 第二章 虛擬儀器 ..................................................... ...4 虛擬儀器的特點(diǎn)及機(jī)制 .............................................. 4 虛擬儀器系統(tǒng)與 傳統(tǒng)儀器的比較 ...................................4 虛擬儀器的特點(diǎn)及優(yōu)勢(shì) ...........................................4 系統(tǒng)的組成 .....................................................5 I/O 接口設(shè)備 ...................................................6 軟件結(jié)構(gòu) .......................................................8 虛擬儀器的開發(fā)軟件 ................................................8 虛擬儀器的開發(fā)語言 .............................................8 圖形化虛擬儀器開發(fā)平臺(tái) —— LABVIEW..............................9 基于 LABVIEW 平臺(tái)的虛擬儀器程序設(shè)計(jì) .............................9 第三章 系統(tǒng)設(shè)計(jì)的硬件平臺(tái) ...............................................11 PC 機(jī) .............................................................11 數(shù)據(jù)采集卡的選擇 .................................................11 數(shù)據(jù)采集卡的性能指標(biāo) .........................................11 數(shù)據(jù)采集卡 (DAQ 卡 )的組成 ......................................12 NI USB6211 數(shù)據(jù)采集卡 ........................................12 第四章 系統(tǒng)總體的設(shè)計(jì)與實(shí)現(xiàn) .............................................13 系統(tǒng)設(shè)計(jì)和程序框圖的流程 .........................................13 系統(tǒng)設(shè)計(jì) .....................................................13 程序框圖的主要設(shè)計(jì)流程 .......................................13 系統(tǒng)的具體應(yīng)用程序 ...............................................13 程序框圖的具體設(shè)計(jì)步驟 .......................................13 PWM波形信號(hào)發(fā)生器 ..................................16 平頂山學(xué)院畢業(yè)論文設(shè)計(jì)說明書 ...............................................18 硬件連接調(diào)試 ...................................................18 整體程序的具體實(shí)現(xiàn) ......................................
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