A preliminary study on photoplethysmogram (PPG) signal analysis for reduction of motion artifact in frequency domain

Author

Cho, J.M. ; Sung, Y.K. ; Shin, K.W. ; Jung, D.J. ; Kim, Yong Sin ; Kim, Nicholas H.

Author_Institution

Dept. of Biomed. Eng., Inje Univ., Gimhae, South Korea

fYear

2012

fDate

17-19 Dec. 2012

Firstpage

28

Lastpage

33

Abstract

In this study, we analyzed frequency characteristics of photoplethysmogram (PPG) signal to improve the accuracy of SpO₂ by reducing the motion artifacts. 23 kinds of different signals generated by SpO₂ test equipment were used for this analysis. The results of analysis showed that most of PPG signals analyzed in this study consisted of the fundamental, 2^nd and 3^rd harmonic components caused by arterial blood flow and component caused by motion artifact. The result also showed the relative magnitudes of its three frequency components. The signals could be divided into four groups based on the relative locations of these frequency components. But four different algorithms would be required to discriminate the signal and motion artifact frequency components.

Keywords

biomedical equipment; blood; blood vessels; haemodynamics; medical signal detection; medical signal processing; photoplethysmography; PPG signal analysis; SpO₂ test equipment; arterial blood flow; frequency characteristics; frequency domain; motion artifact reduction; photoplethysmogram signal analysis; second harmonic components; third harmonic components; Motion artifact; PPG; SpO2;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Engineering and Sciences (IECBES), 2012 IEEE EMBS Conference on

Conference_Location

Langkawi

Print_ISBN

978-1-4673-1664-4

Type

conf

DOI

10.1109/IECBES.2012.6498141

Filename

6498141