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Correlation Analysis of the Time Difference Between Multi-wavelength PPG

  • Jing Liu
  • Yuan-Ting Zhang
Conference paper
Part of the IFMBE Proceedings book series (IFMBE, volume 64)

Abstract

This work developed a four-channel photoplethysmogram (PPG) acquisition system to collect the multi-wavelength PPG signals of red, yellow, green and blue light at the fingertip simultaneously. Eight subjects including 4 females took part in the experiment, and the multi-wavelength PPG signals from their fingertip were recorded. Since different PPG signal carries the blood pulsation information in different depth of the tissue, the time differences between multi-wavelengths was examined to investigate their relationships. The result shows the three time difference between yellow PPG and other PPGs (red PPG, green PPG and blue PPG) are highly correlated with each other (|r| > 0.7).

Notes

Acknowledgements

This work was in part supported by the Guangdong Innovative Research Team fund in China and the HKSAR Innovation and Technology Commission (ITC) Innovation and Technology Fund (ITF), ITS/111/14. The authors would also like to thank the student volunteers for their participation in the experiment.

References

  1. 1.
    A. Challoner, “Photoelectric plethysmography for estimating cutaneous blood flow,” Non-invasive physiological measurements, vol. 1, pp. 125–151, 1979.Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Department of Electronic EngineeringJoint Research Centre for Biomedical Engineering, The Chinese University of Hong KongShatinHong Kong
  2. 2.Department of Electronic EngineeringThe Chinese University of Hong KongShatinHong Kong

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