Real time and anytime opto-physiological monitoring

• Main Authors: Hu, Sijung, Hou, Jiajin, Zheng, Xiaoyu, Dwyer, Vincent, Barrett, Laura, Elsahar, Yasmin
• Format: Conference Proceeding
• Language: English
• Published: SPIE 20.09.2023
• ISBN: 9781510663435; 1510663436
• ISSN: 0277-786X
• DOI: 10.1117/12.3006570

Real-time physiological monitoring is a real challenge due to physical activity to directly disturb photoplethysmography (PPG) based physiological monitoring. Opto-physiological monitoring (OPM) to evolute Beer-Lambert driven PPG, has been well generating a new multi-wavelength optoelectronic patch sensor (mOEPS) to overcome drawbacks of present PPG sensors causing from gravity, balance, skin tone, thermoregulation, and contact force that are highly conducted with hemodynamic processes. A specific configuration of mOEPS has been well defined to enable OPM engineering realization and to generate a multi-spectral imaging of various opto-physiological variations. Together bespoke electronics with embedded algorithms of minimum residual (MR) signal processing, mOEPS delivers a high standard physiological monitoring and assessment in real time and at any time. One physical activity protocols engaged with 12 subjects have been implemented with mOEPS system together with its real time MR. The MA-free pulsatile signals obtained through mOEPS system enables to calculate HR and respiration rate (RR) to 1.44 beat/min and 2.85 breath/min respectively for in-house datasets. Oxygen saturation (SpO2%) levels calculated from MR are consistent with the expected values of ≥ 95% and the Pearson correlation (R) for HR and RR are 0.99 and 0.91 respectively. The outcomes demonstrate mOEPS system is capable of real-time and anytime physiological monitoring at physical states. The coming mOEPS validation against golden standards will be performed to prove a prospective wearable system for clinical grade monitoring and assessment in a continuous physiological status.