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5 March 2021 Investigation of optical heart rate sensors in wearables and the influence of skin tone and obesity on photoplethysmography (PPG) signal
Ajmal Ajmal, Tananant Boonya-Ananta, Andres J. Rodriguez, Vinh Nguyen Du Le, Jessica C. Ramella-Roman
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Proceedings Volume 11638, Biophotonics in Exercise Science, Sports Medicine, Health Monitoring Technologies, and Wearables II; 1163808 (2021) https://doi.org/10.1117/12.2578023
Event: SPIE BiOS, 2021, Online Only
Abstract
Wearable devices, with Photoplethysmography (PPG)-based sensors, are helping patients to monitor chronic health conditions outside the clinic. The prime source of PPG signals is the blood volume change in the dermal vasculature. Here, we present a novel approach of using a skin model, containing double vascular layer within the dermis to investigate the pulsatile contribution from the region. Finite Element Method (FEM) is used to design vessels and PPG signals from the wrist are extracted by studying light transport through Monte Carlo simulations. By assessing PPG sensors in common wearables, the influence of obesity on the PPG signals are also investigated.
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Ajmal Ajmal, Tananant Boonya-Ananta, Andres J. Rodriguez, Vinh Nguyen Du Le, and Jessica C. Ramella-Roman "Investigation of optical heart rate sensors in wearables and the influence of skin tone and obesity on photoplethysmography (PPG) signal", Proc. SPIE 11638, Biophotonics in Exercise Science, Sports Medicine, Health Monitoring Technologies, and Wearables II, 1163808 (5 March 2021); https://doi.org/10.1117/12.2578023
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KEYWORDS
Heart
Sensors
Photoplethysmography
Blood
Finite element methods
Measurement devices
Skin
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