基于小波变换的脉搏波信号去噪  

Denoising of Pulse Signals Based on Wavelet Transform

作　　者：洪文学[1] 陈媛媛[1] 张璋[1] 

机构地区：[1]燕山大学生物医学工程研究所,河北秦皇岛066004

出　　处：《北京生物医学工程》2009年第1期97-99,共3页Beijing Biomedical Engineering

摘　　要：人体脉象信号是一种信噪比较低的非平稳随机信号，在分析脉象信号之前去噪是一项十分重要的工作。针对小波变换中的阈值法进行公式上的改进，并利用ZM—ⅢC型智能化中医脉象仪采集到的亚健康人群左关外桡动脉脉搏信号进行去噪处理，实验结果表明，改进后的阈值法可以取得更好的去噪效果。The pulse signal is a kind of weak signal with lower SNR. Denoising the pulse signal is an important task before analyzing it. A new denoising method combining above improved wavelet thresholding method was proposed. Pulse signals from sub-heahh＇s radial artery were picked up by using ZM-ⅢC pulse collector system. The experimental results indicated that the proposed method was better than traditional wavelet thresholding de-noising methodse.

关 键 词：脉搏信号 小波变换 去噪 

分 类 号：R318.04[医药卫生—生物医学工程]