基于LabVIEW和声卡的心电信号采集及频谱分析仪设计

Based on the sound card of ecg signal LabVIEW and collecting and spectrum analyzer design

LabVIEW是一个高效的图形化程序设计环境,它在测量、测试及工业控制领域已有广泛的应用。声卡是多媒体计算机最基本的配置硬件之一,价格便宜,使用方便。本文介绍了一种将声卡作为A/D,用LabVIEW实现心电信号采集和虚拟频谱分析的功能。实际应用证明,文中设计分析仪成本低、性价比高、使用简单、易操作,完全能够满足数据采集和数据分析的功能。

LabVIEW is a high efficiency graphical platform with extensive applications in measuring,testing and industrial control realm.The audio card is one of the most basic disposition hardware of multi-media computer,the price is cheap and it is easy to be used.This paper introduced the design of a virtual Spectrum Analyzer based on LabVIEW and used the audio card as A /D.The spectrum analyzer designed in this paper willenriched the understanding of the ECG and also have some merit