基于LabVIEW双通道示波器的设计与实现亚为科技.docVIP

基于LabVIEW通道示波器的设计与实现 Design and Implementation of Channel Oscilloscope Based on LabVIEW 2015年0 月摘 要 虚拟仪器技术是现在计算机系统和仪器系统相结合的产物，是当今计算机辅助测试领域的一项重要技术。它推动着传统仪器朝着数字化，智能化，模块化，网络化的方向发展。 随着电子计算机技术和软件开发技术的日新月异，电子计算机在数据的实时分析和处理，显示，存贮等方面的优势与传统的仪器相比越来越明显。与此同时，随着计算机性价比的不断提升，传统仪器的价格又长期居高不下，再加上传统仪器的功能单一，发展虚拟仪器已经成为一个不可阻挡的历史潮流。美国NI公司在这种大环境下，率先发起了对虚拟仪器的研究开发，推出了LabVIEW软件开发平台。 文章阐述了虚拟仪器的背景、概念、发展、组成等，重点介绍了采用图形化编程软件LABVIEW设计虚拟示波器方法以及它的波形显示、频谱分析、参数显示等功能，最终实现开发一个能够对声音信号进行显示的虚拟示波器。 本文所设计的虚拟示波器经过测试可以对信号正确的采集和显示，达到了本次虚拟示波器的设计要求。 本课题在掌握了虚拟仪器的基本结构及信号处理的相关知识基础之上，设计了一套虚拟示波器。对虚拟仪器的概念，结构，发展趋势进行了相关分析。 关键词：虚拟仪器 虚拟示波器 LabVIEW  ABSTRACT Now, virtual instrument technology is the combination of the computer system and instrument system, is an important technology in the field of computer aided testing. It promotes the traditional instruments toward digital, intelligent, modular, network direction. With advances in computer technology and software development technology, electronic computer in real-time data analysis and processing, display, storage, etc advantages compared with traditional instruments is more and more obvious. At the same time, with the improving of the computer price, the price of traditional instruments and high for a long time, coupled with the single function of traditional instrument, virtual instrument development has become an unstoppable tide of history. NI companies in the United States in this environment, take the lead in launching the research and development of virtual instrument, introduced the LabVIEW software development platform. The article expounds the background, concept, the development of virtual instrument, composition, etc., focus on using graphical programming software LABVIEW virtual oscilloscope design method and its waveform display, spectrum analysis, and other functions, eventually developing a audio signals to display the virtual oscilloscope. In this paper, the design of virtual oscilloscope tested signal right acquisition and displa