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A Novel Gait Phase Detection System


I. Pappas, T. Keller, M.R. Popovic

Automatisierungstechnische Verfahren für die Medizin, Darmstadt, Germany, pp. 69-70

This paper presents the architecture and algorithm of a novel gait phase detection system. The system detects four distinct gait phases (stance, heel off, swing and heel strike). It consists of three force sensitive resistors integrated in a shoe sole which measure the applied pressure and a miniature gyroscope attached to the shoe heel which measures angular velocity. A novelty of this system is that it can reliably distinguish walking from loading, unloading or sliding of the foot during stance. Thus the system can be used continuously over long time periods in every day activities which may include walking, standing, sitting and even stair climbing. The necessary signal processing is performed in real time using a microcontroller board. The reliability of the gait phase detection is better than 99 s shown by laboratory experiments. The time delay in the detection of the gait phase transitions is smaller than 70ms for all phases.

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% Autogenerated BibTeX entry
@InProceedings { PapKel:1999:IFA_21,
    author={I. Pappas and T. Keller and M.R. Popovic},
    title={{A Novel Gait Phase Detection System}},
    booktitle={Automatisierungstechnische Verfahren f{\"u}r die Medizin},
    address={Darmstadt, Germany},
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