The Method of Removing Breathing Baseline in Pulse Wave Signal
10.3969/j.issn.1671-7104.2014.01.005
- VernacularTitle:一种消除脉搏波信号中呼吸基线漂移的方法
- Author:
Qingyang HAN
1
;
Bingyu LI
;
Xiaodong WANG
Author Information
1. 中国科学院长春光学精密机械与物理研究所
- Keywords:
pulse wave signal;
breathing baseline draft;
empirical mode decomposition;
wavelet transform
- From:
Chinese Journal of Medical Instrumentation
2014;(1):19-22
- CountryChina
- Language:Chinese
-
Abstract:
A method which combines empirical mode decomposition with wavelet transform is employed to remove breathing baseline draft from pulse wave signal. First of al , this method decomposes pulse wave signal into several intrinsic mode functions and judges the intrinsic mode function which contains the information of breathing baseline draft. And then wavelet transform is used to decompose these intrinsic mode functions, and the detail coefficients representing breathing baseline draft are set into zero. At last, the signal is rebuilt. This can realize removing breathing baseline draft. A self-developed measurement device was used to obtain the pulse wave signal for validating, and AC-DC modulation ratio value was adopted to evaluate the effect. The results showed that this method could effectively remove breathing baseline draft from pulse wave signal.
