本文设计了以PC机和PCI-6221数据采集卡为主要硬件。以LabVIEW为软件开发平台设计虚拟仪器系统。该系统能够实现对采集数字信号的时域分析和频域分析,并能够对采集信号进行各种滤波处理。
Based on PC and PCI-6221 data acquisition card, a virtual instrument system is desinged with LabView. It has external signal acquisition and signal analysis module. This multi-functional virtual instrument system can analyse all acquired signals in time domain and frequency domain, and can process them with fiter functions.