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- Title
움직이는 사람에 대한 비접촉식 생체신호추정 연구.
- Authors
차상빈; 윤세원; 박상홍; 김경태; 최인오
- Abstract
The non-contact vital sign estimation of an individual using radar sensors has been widely researched. However, in the case of an individual with undesirable rigid-body motion of the torso, non-contact vital sign estimation may fail owing to extreme phase fluctuations caused by the larger rigid-body motion of the torso than the micro motion of the vital sign. To address this problem, we propose a rigid-body motion compensation method using the complex echo signals of the IR-UWB radar for the vital sign estimation of an in- dividual with rigid-body motion. The proposed method extracts a complex signal vector using principal component analysis from com- plex echo signals in a radial range and pulse time domain. Next, compensation for the rigid-body motion is implemented by minimizing the entropy of the spectrum for the complex signal vector. In simulations using a point-scatterer model and experiments using IR-UWB commercial radar, we verified that our proposed method is capable of performing successful vital sign estimation of an individual with undesirable rigid-body motion.
- Subjects
PRINCIPAL components analysis; BIVECTORS; VITAL signs; ECHO; RADAR; TORSO; RADIAL distribution function; TIME-domain analysis
- Publication
Journal of Korean Institute of Electromagnetic Engineering & Science / Han-Guk Jeonjapa Hakoe Nonmunji, 2022, Vol 33, Issue 11, p870
- ISSN
1226-3133
- Publication type
Article
- DOI
10.5515/KJKIEES.2022.33.11.870