Evaluation of a Doppler radar sensor system for vital signs detection and activity monitoring in a radio-frequency shielded room

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2015
Major/Subject
Mcode
Degree programme
Language
en
Pages
135-142
Series
MEASUREMENT, Volume 68
Abstract
This study presents an evaluation of an advanced Doppler radar-based method for detection of vital signs, presence, and activity of a human subject in a test room with radar-signal reflecting aluminum-coated surfaces. Ten test subjects lay in four positions, and they sat in two locations in the room, both breathing normally and holding their breath. The mean ratios of the pulse rates determined from the radar signal and electrocardiography and respiration reference signals were 110% (respiration) and 99% (heartbeat), and the mean occupied and empty room radar signal variance ratios were 608 (breathing) and 20 (breath-hold). In a one-subject activity monitoring test, walking, standing and lying activities could be well separated from the radar signal. The results are promising and the proposed system seems to have potential to be used in position-independent health and activity monitoring of, for example, elderly people in care homes or intoxicated people in police custody.
Description
Keywords
cell death prevention, contactless activity monitoring, contactless vital signs monitoring, Doppler radar sensor, elderly care
Other note
Citation
Kuutti , J , Paukkunen , M , Aalto , M , Eskelinen , P & Sepponen , R E 2015 , ' Evaluation of a Doppler radar sensor system for vital signs detection and activity monitoring in a radio-frequency shielded room ' , Measurement , vol. 68 , pp. 135-142 . https://doi.org/10.1016/j.measurement.2015.02.048