基于LabVIEW的心音声发射信号分析仪

Acoustic Emission Signal Analyzer Based on LabView for Heart Sounds

利用声发射技术直接测量心音信号,将虚拟仪器技术应用于心音信号的分析,开发了基于LabVIEW的心音发射信号分析仪。该仪器通过对采集到的信号进行分析处理,可实时显示心音信号频率与幅度随时间的动态变化特性。采用图形语言编写程序,程序界面友好,便于操作,易于临床诊断心脏及心血管疾病。

Currently,electrocardiogram is often regarded as the evidence of analyzing heart sounds in the clinic.In terms of the same electrocardiogram,different doctors will be able to get different diagnosis results.In this paper,the sign of heart sounds is directly measured by using the technique of acoustic emission.The virtual instrument technique is applied to the analysis of heard sounds,and the acoustic emission signal analyzer based on LabVIEW for heart sounds is designed.This instrument can display dynamic change characteristic between frequency and extent for heart sounds real time.In addition,programs are worked out by Graphic program language in this essay,and can be operated expediently with friendly interface.It is helpful for the diagnosis of cardiopathy and cardiovascular diseases.