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Proceedings Paper

Investigation of human locomotion using Penny & Giles electrogoniometer
Author(s): Krzysztof Jaworek; Marcin Derlatka; Mateusz Dominikowski
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Paper Abstract

This paper deals with the experimental measurements, data filtering and theoretical representation of the angular position of a human led in 3D space during normal and pathological walking. The angular position of a human leg during walking in sagittal plane was measured by a new electrogoniometer made by a UK company named Penny & Giles. This system is a spatial mechanism made of a group of links which are coupled by proper angular sensor. This instrument enables an indirect evaluation of the angular position of a human leg in the 3D space from knowledge of the system geometry and from the angular value readings. This instrument is light, small-sized technologically new and is easy to use. However, its dynamics features have not been analyzed in the literature. Therefore we decided to analyze the instrument in order to built a DWT (Discrete Wavelets Transform) filter for filtering data recorded by a electrogoniometer Penny & Giles. We built filter corresponding to Daubechies wavelets, DAUB #20. The DWT filter is sufficient for filtering high frequency noise which exists during experimental measurement of the angular position of a human leg during normal and pathological gait. Filtering using Daubechies wavelets--DAUB #20 is more efficient than commercial numerical filtering delivered by Penny & Giles company.

Paper Details

Date Published: 30 April 1999
PDF: 11 pages
Proc. SPIE 3730, Optoelectronic and Electronic Sensors III, (30 April 1999); doi: 10.1117/12.346863
Show Author Affiliations
Krzysztof Jaworek, Technical Univ. of Bialystok (Poland)
Marcin Derlatka, Technical Univ. of Bialystok (Poland)
Mateusz Dominikowski, Physical Training Academy (Poland)

Published in SPIE Proceedings Vol. 3730:
Optoelectronic and Electronic Sensors III
Antoni Nowakowski; Bogdan Chachulski, Editor(s)

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