基于计算机声卡的多通道数据采集系统  

Computer-based multiple channels sound cards data acquisition system

作　　者：种兰祥[1] 阎丽[1] 张首军[1] 

机构地区：[1]西北大学电子科学系,陕西西安710069

出　　处：《西北大学学报（自然科学版）》2002年第6期629-632,共4页Journal of Northwest University（Natural Science Edition）

基　　金：西北大学科研基金资助项目(OONW34)

摘　　要：运用LabVIEW开发系统,在配置有4块声卡的计算机上,实现了同时进行4个通道的并行数据采集,解决了在同一时间坐标中显示多个具有独立时钟的波形问题,从而构成了一个多通道数据采集系统。实验结果表明:该系统能够正确采集声卡设计频率范围内的信号,可用于在该频段需要数据采集与一般分析的领域。A fourchannel parallel data aguisition system,which is based on a computer with four sound cards configured,has been realized in LabVIEW programming environment,and the problem of displaying multiple waveformes with one′s own clock in one time coordinate has been solved.Experiment results prove that the system can acquire signals in the frequency range designed for sound card accurately,and can applied in the domain of needing data acquisition and general analysis. 

关 键 词：计算机 声卡 多通道数据采集系统 采样精度 采样频率 采样通道 LabVIEW DMA 

分 类 号：TP334.7[自动化与计算机技术—计算机系统结构]