函數(shù)發(fā)生器、數(shù)字存儲(chǔ)示波器

頁(yè)數(shù) 62 字?jǐn)?shù) 27865

摘要

隨著科技的發(fā)展，許多傳統(tǒng)意義上的儀器已逐漸不能滿足使用者要求儀器個(gè)性化等的需求，為解決這個(gè)問(wèn)題，美國(guó)于上個(gè)世紀(jì)八十年代末提出了虛擬儀器的概念，而應(yīng)用最為廣泛的虛擬儀器軟件開(kāi)發(fā)工具就是美國(guó)NI公司推出的LabVIEW。
本次畢業(yè)設(shè)計(jì)的任務(wù)就是使用最新版本的虛擬儀器開(kāi)發(fā)軟件LabVIEW6.1，編程實(shí)現(xiàn)兩種虛擬儀器——函數(shù)發(fā)生器以及示波器的常用功能。
論文的第一章為概述，主要介紹了虛擬儀器的產(chǎn)生和發(fā)展，以及虛擬儀器開(kāi)發(fā)軟件LabVIEW的特點(diǎn)，此外，還說(shuō)明了本次畢設(shè)的背景及意義。
第二章提出了本次畢業(yè)設(shè)計(jì)的目標(biāo)和對(duì)畢設(shè)過(guò)程的整體計(jì)劃，并對(duì)畢設(shè)中將會(huì)用到的開(kāi)發(fā)工具（包括LabVIEW6.1、數(shù)據(jù)采集卡等）的特點(diǎn)及參數(shù)作了簡(jiǎn)單介紹。
第三章是全文的重點(diǎn)部分，詳細(xì)說(shuō)明了函數(shù)發(fā)生器以及示波器的實(shí)現(xiàn)過(guò)程。其中包括實(shí)現(xiàn)兩種虛擬儀器的原理、需要使用的各主要模塊的功能及端口介紹、逐步實(shí)現(xiàn)儀器各種功能的過(guò)程、以及設(shè)計(jì)過(guò)程中遇到的問(wèn)題的解決。本章主要突出對(duì)以前成果的改進(jìn)，以及新增的功能的實(shí)現(xiàn)方法。
最后一章概括了本次畢設(shè)成果可實(shí)現(xiàn)的主要功能，并總結(jié)了本人對(duì)本次畢設(shè)的體會(huì)以及一些改進(jìn)設(shè)計(jì)的建議。


關(guān)鍵詞：虛擬儀器,數(shù)據(jù)采集卡,函數(shù)發(fā)生器,示波器,LabVIEW

Abstract

With the development of science and technology, many traditional instruments could not satisfy the user’s requirements gradually, such as the individuation of the instruments. To solve this problem, the conception of virtual instruments was put forward by the U.S. in the end of 80’s in the last century. The most popular software tool applied to virtual instrument is LabVIEW, which is produced by the National Instruments Corporation of the U.S.
The assignment of this project is to program by the new edition of software, LabVIEW6.1, to make the common function of two virtual instruments (function generator and oscilloscope) come true.
The first chapter of the paper is summarizing. It introduces the appearance and development of the virtual instrument, and the characteristic of LabVIEW, the software applied to virtual instrument. Besides, it also shows the background and meaning of the project.
The second chapter puts the objective and whole planning of the project forward. It also introduces the characteristic and parameter of the tools, including LabVIEW6.1 and the DAQ card, which will be used in the project.
The third chapter is the emphases of the paper. It particularly explains the process of how to make the function generator and oscilloscope come true, including the principium of two virtual instruments, the introduction of the main module’s functions and ports, the process of making the instruments’ function come true step by step, and how to solve the problems appeared in the project. This chapter gives prominence to the improvement over the former production, and the methods of how to make the new function come true.
The last chapter generalizes the main function of the production, and sums up my experience of accomplishing this project and the suggestion of how to improve the project.

Keywords: virtual instruments, LabVIEW, DAQ card, function generator, oscilloscope


目錄

摘要 （中文） ………………………………………………………………………Ⅰ
（Abstract） …………………………………………………………………Ⅱ

第一章 概述 ………………………………………………………………………1
1．1 虛擬儀器 …………………………………………………………1
1．2 虛擬儀器開(kāi)發(fā)軟件——LabVIEW ………………………………3
1．3 畢設(shè)背景 …………………………………………………………4

第二章 設(shè)計(jì)目標(biāo)、整體計(jì)劃及開(kāi)發(fā)工具介紹 …………………………………5
2．1 設(shè)計(jì)目標(biāo) …………………………………………………………5
2．2 整體計(jì)劃 …………………………………………………………5
2．3 開(kāi)發(fā)工具介紹 ……………………………………………………6
2．3．1 虛擬儀器軟件開(kāi)發(fā)工具LabVIEW6.1 ………………6
2．3．2 數(shù)據(jù)采集設(shè)備 ………………………………………6
2．3．3 其它工具 ……………………………………………7

第三章 具體實(shí)現(xiàn) …………………………………………………………………9
3．1 函數(shù)發(fā)生器的實(shí)現(xiàn) ………………………………………………9
3．1．1 信號(hào)產(chǎn)生模塊 ………………………………………10
3．1．2 用中級(jí)AO模塊實(shí)現(xiàn)函數(shù)發(fā)生器功能 ……………12
3．1．3 函數(shù)發(fā)生器各種常用功能的實(shí)現(xiàn) …………………16
3．1．4 函數(shù)發(fā)生器的最終實(shí)現(xiàn) ……………………………20
3．2 示波器的實(shí)現(xiàn) ……………………………………………………21
3．2．1 用中級(jí)AI模塊實(shí)現(xiàn)示波器功能 ……………………21
3．2．2 示波器各種常用功能的實(shí)現(xiàn) ………………………24
3．2．3 示波器的最終實(shí)現(xiàn) …………………………………38
3．2．4 調(diào)試過(guò)程中的問(wèn)題 …………………………………39
3．3 函數(shù)發(fā)生器與示波器的結(jié)合使用 ………………………………40

第四章 設(shè)計(jì)成果與總結(jié) …………………………………………………………41
4．1 設(shè)計(jì)成果 …………………………………………………………41
4．2 總結(jié) ………………………………………………………………42

結(jié)束語(yǔ) ………………………………………………………………………………43
考文獻(xiàn) ………………………………………………………………………………44

附錄一 開(kāi)題報(bào)告
附錄二 翻譯

參考文獻(xiàn)
1．北京中科泛華測(cè)控技術(shù)有限公司.《計(jì)算機(jī)虛擬儀器圖形編程LabVIEW實(shí)驗(yàn)教材》
2．《National Instruments LabVIEW Measurement Manual》
3．《National Instruments LabVIEW User Manual》
4．劉君華等編著.《虛擬儀器圖形化編程語(yǔ)言LabVIEW教程》.西安：西安電子科技大學(xué)出版社，2001.7
5．李剛等編著.《LabVIEW —— 易學(xué)易用的計(jì)算機(jī)圖形化編程語(yǔ)言》.北京：北京航空航天大學(xué)出版社，2001.10