Print Email Facebook Twitter Heart rate measurement through PPG: Heartbeat measurement in a wireless headset Title Heart rate measurement through PPG: Heartbeat measurement in a wireless headset Author Guyomard, J. Stortelder, R. Contributor De Graaf, G. (mentor) Faculty Electrical Engineering, Mathematics and Computer Science Department Microelectronics & Computer Engineering Programme Electrical Engineering Date 2015-07-31 Abstract This thesis, assigned by Plantronics, proposes a solution to the motion artifacts that corrupt the results of PPG (Photo Plethysmo Graphic) signals and therefore the determined heart rate during physical exercises. An Infra-Red light emitting diode and phototransistor package was used to create a PPG signal that was amplified using an operational amplifier and filtered using a high pass and low pass filter. Research was done on PPG signals corrupted by motion with the help of an accelerometer. The fast Fourier transform of the signals showed that there is a relation between the frequency components of the PPG signal and motion signals. Based on this finding a working filter was designed in MATLAB that compares the frequency spectrum of the PPG to motion signals and removes any overlap. The experimental results for running motions prove the correct functioning of this system and showed that invasive sensing techniques are unnecessary. Subject photoplethysmographyheart beatheart rate To reference this document use: http://resolver.tudelft.nl/uuid:62236e40-e12d-4b9b-ab42-7c319d1d7dd3 Part of collection Student theses Document type bachelor thesis Rights (c) 2015 Guyomard, J.Stortelder, R. Files PDF BEP__Heartbeat_PPG.pdf 9.39 MB Close viewer /islandora/object/uuid:62236e40-e12d-4b9b-ab42-7c319d1d7dd3/datastream/OBJ/view