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    Stride Length Estimation Based on a Single Shank's Gyroscope

    Access Status
    Fulltext not available
    Authors
    Han, Yi Chiew
    Wong, Kiing
    Murray, Iain
    Date
    2019
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Han, Y.C. and Wong, K. and Murray, I. 2019. Stride Length Estimation Based on a Single Shank's Gyroscope. IEEE Sensors Letter. 3 (10): Article No. 7001804.
    Source Title
    IEEE Sensors Letter
    DOI
    10.1109/LSENS.2019.2942177
    Faculty
    Curtin International
    Faculty of Science and Engineering
    School
    Curtin International
    School of Electrical Engineering, Computing and Mathematical Sciences (EECMS)
    Remarks

    © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

    URI
    http://hdl.handle.net/20.500.11937/79519
    Collection
    • Curtin Research Publications
    Abstract

    An inertial measurement unit based stride length estimation remains as a challenging problem despite many researchers have tried to use frequency, vertical acceleration, and/or angle to estimate the stride length. In this letter, we propose three new features that can be extracted from a single shank's gyroscope for an stride length estimation. We first noticed that the shank's horizontal displacement increases mainly during its extension, while remains almost unchanged during its flexion. The horizontal displacement s during the shank's extension was treated as a linear increment, and therefore, a linear kinematic equation s = 0.5(u + v)t could be applied. The initial velocity u is estimated as the average angular velocity during shank's flexion, while the final velocity v is estimated as the summation of angular velocity during the whole stride. The time t is estimated as the duration of the shank's extension rather than the duration of the whole stride. This proposed method had resulted in a low mean absolute error of 4.2 cm with a standard deviation of 5.5 cm.

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