Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Performance Evaluation of the Proper Pressing Method and Materials with Regard to EMG Textile Electrodes

EMG 텍스타일 전극으로서의 적절한 압착방식 및 소재 성능 평가

  • Koo, Bon-Hak (Department of Organic Materials and Fiber Engineering, Soongsil University) ;
  • Lee, Sang-ho (Department of Organic Materials and Fiber Engineering, Soongsil University) ;
  • Cha, Kyung-hoon (Department of Organic Materials and Fiber Engineering, Soongsil University) ;
  • Kim, Sang-Un (Department of Organic Materials and Fiber Engineering, Soongsil University) ;
  • Kim, Joo-yong (Department of Organic Materials and Fiber Engineering, Soongsil University)
  • 구본학 (숭실대학교 유기신소재파이버공학과) ;
  • 이상호 (숭실대학교 유기신소재파이버공학과) ;
  • 차경훈 (숭실대학교 유기신소재파이버공학과) ;
  • 김상운 (숭실대학교 유기신소재파이버공학과) ;
  • 김주용 (숭실대학교 유기신소재파이버공학과)
  • Received : 2022.08.23
  • Accepted : 2022.10.06
  • Published : 2022.10.31
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Abstract

After COVID-19, there is a growing demand for bio-signal wearable devices in everyday life owing to an increasing interest in health and fitness. Studies on wearable surface electromyography (sEMG) electrodes are being conducted because sEMG can measure muscle activity signals without incurring pain and bleeding. EMG electrodes are made of gel (i.e., Ag/AgCl); however, they are not suitable for long-term use in everyday life owing to their strong adhesive force and adverse impact on the skin. Accordingly, dry textile electrodes are required, along with electrode materials and compression methods suitable for obtaining EMG signals. Therefore, this study evaluated the performance of the EMG electrode compression method and appropriate textile electrode materials. Conductive textile electrodes were made of silver fabric, silver coating fabric, carbon fabric, and CNT-Dipping neoprene, and an EMG sensor was positioned at the biceps according to the SENIAM to obtain signals and raw data for each material and compression method. Silver fabric exhibited a significant muscle active/release signal data difference and low dispersion and demonstrated a high signal-to-noise ratio (SNR), which confirms that it is the most appropriate electrode material for conducting measurements. Therefore, while comparing the SNR of the silver fabric electrode and general wet electrodes in the band type, it exhibited similar performance and indicated that the wet electrode can be replaced with a textile dry electrode (band silver fabric electrode: 16.14±1.50; wet electrode: 17.77±1.00).

Keywords

Acknowledgement

이 논문은 2022년도 정부(산업통상자원부)의 재원으로 한국산업기술진흥원의 지원을 받아 수행된 연구임(P0002397, 2022년 산업혁신인재성장지원사업).

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