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http://dx.doi.org/10.5302/J.ICROS.2011.17.3.223

Recognition of Stance Phase for Walking Assistive Devices by Foot Pressure Patterns  

Lee, Sang-Ryong (Kyungpook National University)
Heo, Geun-Sub (Kyungpook National University)
Kang, Oh-Hyun (Kyungpook National University)
Lee, Choon-Young (Kyungpook National University)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.17, no.3, 2011 , pp. 223-228 More about this Journal
Abstract
In this paper, we proposed a technique to recognize three states in stance phase of gait cycle. Walking assistive devices are used to help the elderly people walk or to monitor walking behavior of the disabled persons. For the effective assistance, they adopt an intelligent sensor system to understand user's current state in walking. There are three states in stance phase; Loading Response, Midstance, and Terminal Stance. We developed a foot pressure sensor using 24 FSRs (Force Sensing/Sensitive Resistors). The foot pressure patterns were integrated through the interpolation of FSR cell array. The pressure patterns were processed to get the trajectories of COM (Center of Mass). Using the trajectories of COM of foot pressure, we can recognize the three states of stance phase. The experimental results show the effective recognition of stance phase and the possibility of usage on the walking assistive device for better control and/or foot pressure monitoring.
Keywords
stance phase; walking assistance; FSR; recognition;
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Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By SCOPUS : 1
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