摘要
介绍了虚拟仪器的特点和组成。基于LabVIEW开发系统,用普通PC机的声卡代替价格昂贵的商用数据采集卡,设计了一个简单的虚拟示波器,该系统能够正确采集声卡设计频率范围内的信号,可以实现基本示波器的测量功能和频谱分析功能。
In this paper, the characteristics and composition of virtual instrument was introduced. A virtual oscilloscope based on sound card of PC and LabVIEW programming environment was designed. The system can acquire signals in the frequency range designed for sound card accurately, and has the function of measurement and spectral analysis.
出处
《微计算机信息》
北大核心
2005年第3期109-109,163,共2页
Control & Automation
