Research output per year
Research output per year
Research output
Search results
-
2024
Evaluation of the impact of LED viewing angle and optical window choice on photoplethysmography signal quality
Sole Morillo, A., Lambert Cause, J., da Silva, B. & Stiens, J., 12 Mar 2024, Photoplethysmography (PPG) is a non-invasive optical technique used to extract physiological information by means of light interaction with the skin. PPG is widely used in pulse oximeters, and the evolution of wearable technologies is further enlarging its applications. A great variety of influencing factors impact the PPG waveform, making the correct feature extraction difficult and, therefore, limiting the accuracy of many PPG applications. The device hardware and software are among these influencing factors. This study evaluates the impact on the PPG signal quality of the LED viewing angle (luminous aperture) and the protective glass material, thickness, and anti-reflective coating, both important building blocks of a PPG sensor. Results suggest that the larger the viewing angle, the smaller the detected signal amplitude. The protective glass properties on the contrary does not seem to impact the detected signal amplitudes.. Gannot, I., Gannot, I. & Roodenko, K. (eds.). 2024 ed. Optical Fibers and Sensors for Medical Diagnostics, Treatment, and Environmental Applications XXIV: SPIE, Vol. 12835. p. 157-169 13 p. 128350Q. (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; vol. 12835).Research output: Chapter in Book/Report/Conference proceeding › Conference paper › Research
-
2022
Effect of the Transimpedance Amplifier Topology on the Photoplethysmography Signal
Sole Morillo, A., Lambert Cause, J., da Silva, B., Garcia-Naranjo, J. C. & Stiens, J., 18 Oct 2022, Effect of the Transimpedance Amplifier Topology on the Photoplethysmography Signal. IEEE Xplore, p. 1-7 7 p. (IECON Proceedings (Industrial Electronics Conference); vol. 2022-October).Research output: Chapter in Book/Report/Conference proceeding › Conference paper › Research
Open Access3 Citations (Scopus)