Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Development and Assessment of Conductive Fabric Sensor for Evaluating Knee Movement using Bio-impedance Measurement Method

슬관절 운동 평가를 위한 생체 임피던스 측정용 전도성 섬유센서 개발 및 평가

  • Lee, Byung-Woo (Department of Electrical & Electronic Engineering, Yonsei University) ;
  • Lee, Chung-Keun (Department of Electrical & Electronic Engineering, Yonsei University) ;
  • Cho, Ha-Kyung (Korea High Tech Textile Research Institute) ;
  • Lee, Myoung-Ho (Department of Electrical & Electronic Engineering, Yonsei University)
  • 이병우 (연세대학교 전기전자공학과) ;
  • 이충근 (연세대학교 전기전자공학과) ;
  • 조하경 ((재)한국섬유소재연구소) ;
  • 이명호 (연세대학교 전기전자공학과)
  • Received : 2010.11.14
  • Accepted : 2011.01.10
  • Published : 2011.02.28
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Abstract

This paper describes the development and assessment of conductive fabric sensor for evaluating knee movement using bio-impedance measurement method. The proposed strip-typed conductive fabric sensor is compared with a dot-typed Ag/AgCl electrode for evaluating validity under knee movement condition. Subjects are composed of ten males($26.6{\pm}2.591$) who have not had problems on their knee. The strip-typed conductive fabric sensor is analyzed by correlation and reliability between a dot-typed Ag/AgCl electrode and the strip-typed conductive fabric sensor. The difference of bio-impedance between a dot-typed Ag/AgCl electrode and the strip-typed conductive fabric sensor averages $7.067{\pm}13.987\;{\Omega}$ As the p-value is under 0.0001 in 99% of t-distribution, the strip-typed conductive fabric sensor is correlated with a dot-typed Ag/AgCl electrode by SPSS software. The strip-typed conductive fabric sensor has reliability when it is compared with a dot-typed Ag/AgCl electrode because most of bio-impedance values are in ${\pm}1.96$ standard deviation by Bland-Altman Analysis. As a result, the strip-typed conductive fabric sensor can be used for assessing knee movement through bio-impedance measurement method as a dot-typed Ag/AgCl electrode. Futhermore, the strip-typed conductive fabric sensor is available for wearable circumstances, applications and industries in the near future.

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