基于小波分析的结肠蠕动压力信号提取方法

上海交通大学学报（自然版） ›› 2014, Vol. 48 ›› Issue (09): 1252-1256.

基于小波分析的结肠蠕动压力信号提取方法

赵凯，颜国正，王志武，鲁丽，许飞

（上海交通大学电子信息与电气工程学院，上海 200240）

收稿日期:2013-11-28 出版日期:2014-09-30 发布日期:2014-09-30
基金资助:
国家自然科学基金项目（31170968）,载人航天领域预先研究项目（010203）,上海市科委项目（09DZ1907400）资助

Extraction of Colon Peristalsis Pressure Signal Based on Wavelet Analysis

ZHAO Kai,YAN Guozheng,WANG Zhiwu,LU Li,XU Fei

（School of Information and Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China）

Received:2013-11-28 Online:2014-09-30 Published:2014-09-30

摘要/Abstract

摘要：

为了获取纯净的结肠蠕动信号，提出了一种基于小波分析的结肠蠕动压力信号提取方法.其中，对结肠压力信号进行5层的小波分解，去除干扰信号后重构信号，进而获得结肠蠕动压力信号.同时，针对异常的结肠压力数据进行了验证实验.结果表明：所提出的方法对异常的结肠压力信号具有很好的抑制效果，并可以保留结肠蠕动压力信号的细节特征；与含突变信号的结肠蠕动压力信号相比，所提取的结肠蠕动压力信号的信噪比较高、均方误差较低.

关键词: 结肠, 蠕动, 压力信号, 小波分析, 微型电子胶囊

Abstract:

In order to obtain the pure peristalsis pressure signal of the colon, a method for extracting the peristalsis pressure signal of the colon based on wavelet analysis was proposed in this paper. The colonic pressure signal was decomposed into five levels and the peristalsis pressure signal of the colon was reconstructed after detaching the interference signal. Besides, an experiment for eliminating abnormal data was conducted. The results showed that not only the abnormal colonic pressure signal was inhibited effectively, but also the detail characteristics of the colonic peristalsis pressure signals were maintained by using the proposed method. Compared with the peristaltic pressure signal containing interference signal, the extracted signal had higher signal noise ratio and lower mean square error.

Key words: colon, motility, pressure signal, wavelet analysis, micro electronic capsule

中图分类号:

赵凯，颜国正，王志武，鲁丽，许飞. 基于小波分析的结肠蠕动压力信号提取方法[J]. 上海交通大学学报（自然版）, 2014, 48(09): 1252-1256.

ZHAO Kai,YAN Guozheng,WANG Zhiwu,LU Li,XU Fei. Extraction of Colon Peristalsis Pressure Signal Based on Wavelet Analysis[J]. Journal of Shanghai Jiaotong University, 2014, 48(09): 1252-1256.

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