%0 Journal Article %A Shi, Ping %A Azorin-Peris, Vicente %A Echiadis, Angelos S. %A Zheng, Jia %A Zhu, Yisheng %A Cheang, Peck-Yeng %A Hu, Sijung %D 2016 %T Non-contact reflection photoplethysmography towards effective human physiological monitoring %U https://repository.lboro.ac.uk/articles/journal_contribution/Non-contact_reflection_photoplethysmography_towards_effective_human_physiological_monitoring/9562148 %2 https://repository.lboro.ac.uk/ndownloader/files/17194313 %K Non-contact reflection photoplethysmography (NRPPG) %K Sensor placement %K Bland-Altman plot %K Pearson’s correlation %K Cardio-physiological monitoring %K Mechanical Engineering not elsewhere classified %K Artificial Intelligence and Image Processing %X A non-contact reflection photoplethysmography (NRPPG) with its engineering model was created to access human physiological information. The NRPPG engineering setup with a vertical cavity surface emitting laser (VCSEL) as a light source and a high-speed PiN photodiode as a photodetector was configured based upon the principles of light-tissue interaction and Beer-Lambert’s law. In this paper, we present three aspects of the NRPPG performance: (1) photonics engineering work to capture photoplethysmographic signals with a non-contact manner in an optimal setup of the NRPPG; (2) a 5-minute protocol with 22 participants to determine a good agreement between NRPPG and contact photoplethysmography (CPPG) by means of Bland-Altman statistical analysis and Pearson’s correlation coefficient; and (3) a physiological experiment designed for cardiac-physiological monitoring utilizing NRPPG. The experimental results suggest that clean PPG signal can be obtained between 30-110 mm. The outcome from agreement study indicates that the performance of NRPPG is compatible with CPPG. The NRPPG technique has great potential in cardiac-physiological assessment in a required clinical circumstance. %I Loughborough University