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http://dx.doi.org/10.5850/JKSCT.2015.39.3.369

Effect of Module Design for a Garment-Type Heart Activity Monitoring Wearable System Based on Non-Contact Type Sensing  

Koo, Hye Ran (Dept. of Clothing & Textiles, Yonsei University)
Lee, Young-Jae (School of Biomedical Engineering, College of Biomedical & Life Science, Konkuk University)
Gi, Sunok (Dept. of Clothing & Textiles, Yonsei University)
Lee, Seung Pyo (Dept. of Clothing & Textiles, Yonsei University)
Kim, Kyeng Nam (School of Biomedical Engineering, College of Biomedical & Life Science, Konkuk University)
Kang, Seung Jin (School of Biomedical Engineering, College of Biomedical & Life Science, Konkuk University)
Lee, Jeong-Whan (School of Biomedical Engineering, College of Biomedical & Life Science, Konkuk University)
Lee, Joo Hyeon (Dept. of Clothing & Textiles, Yonsei University)
Publication Information
Journal of the Korean Society of Clothing and Textiles / v.39, no.3, 2015 , pp. 369-378 More about this Journal
Abstract
Various forms of wearable bio-signal monitoring systems have been developed recently. Acquisition of stable bio-signal data for health care purposes needs to be unconscious and continuous without hindrance to the users' daily activities. The garment type is a suitable form of a wearable bio-signal monitoring system; however, motion artifacts caused by body movement degrade the signal quality during the measurement of bio-signals. It is crucial to stabilize the electrode position to reduce motion artifacts generated when in motion. The problems with motion artifacts remain unresolved despite their significant effect on bio-signal monitoring. This research creates a foundation for the design of garment-type wearable systems for everyday use by finding a method to reduce motion artifacts through modular design. Two distinct garment-type wearable systems (tee-shirt with a motion artifact-reducing module (MARM) and tee-shirt without a MARM) were designed to compare the effects of modular design on the measurement of heart activity in terms of electrode position displacement, signal quality index value, and morphological quality. The tee-shirt with MARM showed superior properties and yielded higher quality signals than the tee-shirt without MARM. In addition, the tee-shirt with MARM showed a better repeatability of the heart activity signals. Therefore, a garment design with MARM is an efficient way to acquire stable bio-signals while in motion.
Keywords
Heart activity sensing clothing design; Wearable technology; Textile electrode; Non-contact type sensing method; Motion artifact;
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