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http://dx.doi.org/10.5302/J.ICROS.2015.15.9017

A Study on Gait Imbalance Evaluation System based on Two-axis Angle using Encoder  

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)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.21, no.5, 2015 , pp. 401-406 More about this Journal
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
gait imbalance; symmetry index (SI); encoder; gait analysis;
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Times Cited By KSCI : 4  (Citation Analysis)
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