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나노입자 연구단
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Wearable Fall Detector using Integrated Sensors and Energy Devices

Cited 20 time in webofscience Cited 0 time in scopus
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Title
Wearable Fall Detector using Integrated Sensors and Energy Devices
Author(s)
Sungmook Jung; Seungki Hong; Jaemin Kim; Sangkyu Lee; Taeghwan Hyeon; Lee, M; Dae-Hyeong Kim
Publication Date
2015-11
Journal
SCIENTIFIC REPORTS, v.5, no., pp.17081 -
Publisher
NATURE PUBLISHING GROUP
Abstract
Wearable devices have attracted great attentions as next-generation electronic devices. For the comfortable, portable, and easy-to-use system platform in wearable electronics, a key requirement is to replace conventional bulky and rigid energy devices into thin and deformable ones accompanying the capability of long-term energy supply. Here, we demonstrate a wearable fall detection system composed of a wristband-type deformable triboelectric generator and lithium ion battery in conjunction with integrated sensors, controllers, and wireless units. A stretchable conductive nylon is used as electrodes of the triboelectric generator and the interconnection between battery cells. Ethoxylated polyethylenimine, coated on the surface of the conductive nylon electrode, tunes the work function of a triboelectric generator and maximizes its performance. The electrical energy harvested from the triboelectric generator through human body motions continuously recharges the stretchable battery and prolongs hours of its use. The integrated energy supply system runs the 3-axis accelerometer and related electronics that record human body motions and send the data wirelessly. Upon the unexpected fall occurring, a custom-made software discriminates the fall signal and an emergency alert is immediately sent to an external mobile device. This wearable fall detection system would provide new opportunities in the mobile electronics and wearable healthcare. © 2015, Nature Publishing Group. All rights reserved
URI
http://pr.ibs.re.kr/handle/8788114/2280
DOI
10.1038/srep17081
ISSN
2045-2322
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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