脉搏声信号检测系统实验设计及功率谱特征

Experiment Design and Power spectral Characteristics of Pulse Signals

目的有效地获取人体脉搏信号和分析脉搏所包含的生理病理信息。方法利用声学原理，设计了一种非接触式的脉搏信号检测系统，提取了人体四种脉搏声信号；应用快速傅立叶变换方法对脉搏信号进行了分析。结果获得了脉搏信号的功率谱，并对功率谱特征进行了分析和比较。结论得出了若干对中医脉诊客观化研究和人体心血管系统疾病的无创伤诊断有重要参考价值的结论。

Objective The goal is to detect the pulse signals of human body effectively and to analyze physio pathological information embodied in pulse.Methods In the light of acoustic theory,a non contact type detecting system of pulse signals is designed,which is used to detect the four kinds of pulse signals.The pulse signals were processed by using the fast Fourier transforms.Results The power spectra of pulse signals were obtained,the power spectral characteristics were analyzed and compared.Conclusion Some clues are drawn,which may be of great value in the objective study of pulse diagnosis and in the non invasive diagnosis of cardiovascular system.