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Biosensors 2017, 7(2), 22; doi:10.3390/bios7020022

A Multi-Wavelength Opto-Electronic Patch Sensor to Effectively Detect Physiological Changes against Human Skin Types

1
School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200072, China
2
School of Electronic, Electrical and Systems Engineering, Loughborough University, Ashby Road, Loughborough, Leicestershire LE11 3TU, UK
3
College of Engineering, Taif University, Airport Road, Al Hawiyah Area 888, Taif 26571, Saudi Arabia
*
Author to whom correspondence should be addressed.
Received: 11 January 2017 / Revised: 13 June 2017 / Accepted: 16 June 2017 / Published: 21 June 2017
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Abstract

Different skin pigments among various ethnic group people have an impact on spectrometric illumination on skin surface. To effectively capture photoplethysmographic (PPG) signals, a multi-wavelength opto-electronic patch sensor (OEPS) together with a schematic architecture of electronics were developed to overcome the drawback of present PPG sensor. To perform a better in vivo physiological measurement against skin pigments, optimal illuminations in OEPS, whose wavelength is compatible with a specific skin type, were optimized to capture a reliable physiological sign of heart rate (HR). A protocol was designed to investigate an impact of five skin types in compliance with Von Luschan’s chromatic scale. Thirty-three healthy male subjects between the ages of 18 and 41 were involved in the protocol implemented by means of the OEPS system. The results show that there is no significant difference (p: 0.09, F = 3.0) in five group tests with the skin types across various activities throughout a series of consistent measurements. The outcome of the present study demonstrates that the OEPS, with its multi-wavelength illumination characteristics, could open a path in multiple applications of different ethnic groups with cost-effective health monitoring. View Full-Text
Keywords: multi-wavelength; auto adaptive adjustment; opto-electronic patch sensor (OEPS); skin pigments; Von Luschan’s chromatic scale (VLCS) multi-wavelength; auto adaptive adjustment; opto-electronic patch sensor (OEPS); skin pigments; Von Luschan’s chromatic scale (VLCS)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Yan, L.; Hu, S.; Alzahrani, A.; Alharbi, S.; Blanos, P. A Multi-Wavelength Opto-Electronic Patch Sensor to Effectively Detect Physiological Changes against Human Skin Types. Biosensors 2017, 7, 22.

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