基于多信号瞬时频率捕捉血压信号特定点的研究*

作者：何佳英，张 日期：2009-12-30/span> 浏览：2728 查看PDF文档

基于多信号瞬时频率捕捉血压信号特定点的研究*

何佳英，张
（杭州电子科技大学 电子信息学院，浙江 杭州 310018）

摘要：针对动脉、静脉信号的特征点准确定位问题，着重讨论了采用改进小波进行动脉、静脉信号去伪存真处理的方法，并利用时频分析的瞬时频率跃变对动脉信号的特定点进行了定位仿真，提出了一种时频多信号关联的静脉特征捕捉和定位方法。研究结果表明，动、静脉波信号的特定点定位方法比传统方法更加准确。
关键词：血压信号；瞬时频率；特征点
中图分类号：TP391文献标识码：A文章编号：1001-4551(2009)12-0017-03

Research on capturing a particular point of blood pressure
based on the multi-signal instantaneous frequency
HE Jia-ying, ZHANG Xun
(School of Electronic & Information, Hangzhou Dianzi University, Hangzhou 310018, China)
Abstract: Aiming at tackling the accurate positioning of feature points problem of the arterial signal and the venous signal ,a new method of improving the wavelet to simulate the elimination of noise was realized in the arterial signal and the venous signal , the mutation of the instantaneous frequencys time frequency analysis was employed for the position simulation of the arterial signals feature points , and a new method of utilizing the multi-signal relation to capture the venous signals characteristics was presented. The results indicate that the new method of locating the arterial signals feature points and the venous signals feature points is more accurate than the traditional method.
Key words: blood pressure signal; instantaneous frequency; feature points
参考文献(References):
［1］崔华,宋国乡.基于小波阈值去噪方法的一种改进方案［J］.中国生物医学工程学报,2005,13(1):1-4,15.
［2］常昌远,骆璇.脉搏波的函数叠加逼近分析方法的研究［J］.应用科学学报,2000,18(2):135-138.
［3］杨福生,吕杨生.生物医学信号的处理和识别［M］.天津：天津科技翻译出版公司,1997:378-384.
［4］罗志昌,张松,杨文鸣.脉搏波波形特征信息的研究［J］.北京工业大学学报,1996,22(1):71-79.
［5］黄晓华.中医脉诊客观化研究浅析［J］.中国中医基础医学杂志，2007,13(11):3.
［6］钱伟立,徐兰义.高斯函数分解法提取脉搏波特征［J］.中国生物医学工程学报,1994,13(1):1-7,15.
［7］薛涛.和卫星.小波阈值去噪技术在ECG信号处理中的应用［J］.应用科学学报,2006,18(2):135-138.
［8］ZHANG Xiao-ping, DESAI M D.Adaptire denoising based on sure risk［J］.IEEE Signal Processing Lerrers,1998,5(10):265-267.
［9］ROURKE M, PAUCA R. Pulse wave analysis［J］.Blackwell Science Clin Pharmacol,2002（22）:147-152.