Kose, Alper and Cereatti, Andrea and Della Croce, Ugo (2011) Estimation of traversed distance in level walking using a single Inertial Measurement Unit attached to the waist. In: EMBC 2011: 33rd Annual International Conference of the IEEE EMBC, 30 August - 3 September 2011, Boston (MA), USA. Piscataway, IEEE. p. 1125-1128. ISBN 978-1-4244-4121-1. Conference or Workshop Item.
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A method for estimating step length during level walking using a single inertial measurement unit is proposed. A combination of an optimally filtered direct and reverse integration technique and a velocity update technique for the initial velocity values identification was implemented to reduce the effects of the acceleration signals drift. The method takes advantage of the cyclic nature of gait. The inertial measurement unit was placed at waist level on the right side and the method was validated on eight subjects walking for 75 m while varying their speed. The traversed distance was estimated with an average error equal to 0.8% of the total walking distance.
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