摘要：目前，随着电子线路技术、信号与信息处理技术和计算机科学与技术的飞速发展，以及这些技术在测量、测量理论、新方法和新设备方面的应用也越来越受到重视。虚拟仪器跟传统仪器相比较具有很多优点，比如操作灵活、开发周期短、节约成本和具有友好的操作界面等。这也正是虚拟仪器是通过强大的计算机资源与硬件仪器相结合的体现，对于信号的分析处理极为方便。91149

本篇文章是基于LabVIEW开发平台的虚拟示波器，所以本文首先介绍虚拟仪器的发展，研究背景和意义。然后对虚拟仪器基础包括概念、硬件系统、软件系统的介绍和LabVIEW基础包括LabVIEW程序的基本构成、选板、基本数据类型的介绍。接着对虚拟示波器的基本工作原理、组成部分、功能模板、设计方案作叙述。最后，对该虚拟示波器系统进行调试。试验成效达到预先策划要求。

毕业论文关键词：虚拟仪器，LabVIEW,虚拟示波器

Abstract ： At present, with the rapid development of electronic technology, signal and information processing technology and computer science and technology, and the application of these techniques in measurement, measurement theory, new methods and new equipment has been paid more and more attention。 Compared with traditional instruments,  virtual instrument has many advantages, such as flexible operation, short development cycle, cost saving and friendly interface。 This is also the virtual instrument is a combination of powerful computer resources and hardware instruments for the analysis of the signal processing。It is very convenient for Signal analysis and processing。

This article is based on the LabVIEW development platform of the virtual oscilloscope, so this paper first introduces the development of virtual instruments, research background and significance。 Then the paper introduces the concept of virtual instrument, hardware system and software system, including the basic structure of LabVIEW program, the selection of board and the basic data types of LabVIEW。 Then the basic working principle, component, function template and design scheme of the virtual oscilloscope are described。 Finally, the virtual oscilloscope system is debugged。 Test results meet the pre planning requirements。

Keywords：virtual instrument,LabVIEW, oscilloscope

目录

1绪论 5

1。1前言 5

1。2本研究的内容与技术路线 5

2虚拟仪器基础 6

2。1虚拟仪器概念 6

2。2虚拟仪器的硬件系统 6

2。3虚拟仪器的软件系统 6

2。3。1应用软件层 7

2。3。2仪器驱动程序层 7

2。3。3输入输出接口层 7

2。4虚拟仪器设计方法 7

3LabVIEW基础 8

3。1LabVIEW概述 8

3。2LabVIEW程序的基本构成 9

3。2。1前面板和框图 9

3。2。2前面板和框图工具条 10

3。2。3图标和连接器 10

3。3LabVIEW的选板 10

3。3。1工具选板 10

3。3。2控件选板 11

3。3。3函数选板