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Gyroscope vs. accelerometer measurements of motion from wrist PPG during physical exercise

Casson, Alexander J and Vazquez Galvez, Arturo and Jarchi, Delaram (2016) 'Gyroscope vs. accelerometer measurements of motion from wrist PPG during physical exercise.' ICT Express, 2 (4). 175 - 179. ISSN 2405-9595

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Abstract

Many wearable devices include PPG (photoplethysmography) sensors for non-invasive heart rate monitoring. However, PPG signals are heavily corrupted by motion interference, and rely on simultaneous motion measurements to remove the interference. Accelerometers are used commonly, but cannot differentiate between acceleration due to movement and acceleration due to gravity. This paper compares measurements of motion using accelerometers and gyroscopes to give a more complete estimate of wrist motion. Results show the two sensor signals are very different, with low correlations present. When used in a wrist PPG heart rate algorithm gyroscope motion estimates obtain better performance in half of the cases.

Item Type: Article
Uncontrolled Keywords: Photoplethysmography (PPG), Gyroscope, Accelerometer, Heart rate monitoring, Physical exercise
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
R Medicine > R Medicine (General)
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Depositing User: Elements
Date Deposited: 11 Jun 2019 10:05
Last Modified: 11 Jun 2019 10:15
URI: http://repository.essex.ac.uk/id/eprint/24674

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