Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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A Study on Gait Imbalance Evaluation System based on Two-axis Angle using Encoder

인코더를 이용한 2축 각도 기반 보행 불균형 평가 시스템 연구

  • Shim, Hyeon-min (Institute for Information and Electronics Research, Inha University) ;
  • Kim, Yoohyun (Department of Electronic Engineering, Inha University) ;
  • Cho, Woo-Hyeong (Department of Electronic Engineering, Inha University) ;
  • Kwon, Jangwoo (Department of Computer Information Engineering, Inha University) ;
  • Lee, Sangmin (Institute for Information and Electronics Research, Inha University)
  • 심현민 (인하대학교 정보전자공동연구소) ;
  • 김유현 (인하대학교 전자공학과) ;
  • 조우형 (인하대학교 전자공학과) ;
  • 권장우 (인하대학교 컴퓨터정보공학과) ;
  • 이상민 (인하대학교 정보전자공동연구소)
  • Received : 2015.02.15
  • Accepted : 2015.03.15
  • Published : 2015.05.01
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Abstract

In this study, the gait imbalance evaluation algorithm based on two axes angle using encoder is proposed. This experiment was carried out to experiment with a healthy adult male to 10 people. The device is attached to the hip and knee joint in order to measure the angle during the gait. Normal and imbalance gait angle data were measured using an encoder attached to the hip and knee joints. Also, in order to verify the reliability of estimation of asymmetrical gait using hip and knee angle, it was compared with the result of asymmetrical gait estimation using foot pressure. SI (Symmetry Index) was used as an index for determining the gait imbalance. As a result, normal gait and 1.5cm imbalance gait were evaluation as normal gait through SI using an encoder. And imbalance gait of 3cm, 4cm, and 6cm were judge by imbalance gait. Whereas all gait experiments except normal gait were evaluation as imbalance gait through SI using the pressure. It was possible to determine both the normal gait and imbalance gait through measurement for the angle and the pressure.

Keywords

References

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