基于声卡和LabVIEW的虚拟示波器的设计  

Design of Virtual Oscilloscope Based on Sound Card and LabVIEW

作　　者：李燕杰[1] 赵娜[1] 赵平[1] 张京京[1] 

机构地区：[1]天津农学院计算机与信息工程学院,天津300384

出　　处：《天津农学院学报》2016年第1期51-53,70,共4页Journal of Tianjin Agricultural University

基　　金：天津农学院科技发展基金项目"基于EDA的虚拟示波器的研究与设计"(2012N13)

摘　　要：为解决传统示波器价格昂贵、功能单一的问题,在对采样频率要求不高的情况下,利用PC机上配置的普通声卡作为数据采集卡,借助虚拟仪器开发软件Lab VIEW,设计了基于声卡的双通道虚拟示波器。重点阐述了示波器的数据采集、数据处理、参数测量、波形显示、波形存储及回放等功能模块的设计。经实践证明,该虚拟示波器不仅实现了传统示波器的基本功能,而且具有开发周期短、运行可靠和性能良好等特点。In order to solve the problem of expensive and single function of the traditional oscilloscope, this article describes the development of dual-channel virtual oscilloscope under the condition of not high sampling frequency based on personal computer＇s sound card instead of data acquisition card and Lab VIEW software. The main functions of virtual oscilloscope include data acquisition, parameter measurement, waveform display,spectrum analysis, et al.The practice shows that the virtual oscilloscope is not only realize the basic function of traditional oscilloscope, but also a short development cycle, reliable operation and good performance, et al.

关 键 词：虚拟仪器 示波器 声卡 数据采集 LABVIEW 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]