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1887

access icon free Using gait symmetry to virtually align a triaxial accelerometer during running and walking

© The Institution of Engineering and Technology
Received 25/10/2012, Published

During running and walking the human centre of mass experiences a symmetric acceleration along the mediolateral direction. This reported work shows how to exploit this knowledge to correct misalignments of the axes of a trunk-mounted accelerometer with respect to the body axes. After vertical alignment, based on the gravitational component of the signal, the technique computes the virtual rotation angle of the axes lying in the horizontal plane. The chosen angle minimises the autocorrelation of the signal along the mediolateral direction.

Inspec keywords: acceleration; gait analysis; accelerometers; medical signal processing; signal sampling

Other keywords: symmetric acceleration; mediolateral direction; virtually align triaxial accelerometer; gait symmetry; human centre-of-mass; signal autocorrelation; gravitational component; trunk-mounted accelerometer; vertical alignment; body axes; virtual rotation angle; running; walking; signal sampling

Subjects: Signal processing and detection; Physics of body movements; Biomedical measurement and imaging; Digital signal processing; Patient diagnostic methods and instrumentation; Velocity, acceleration and rotation measurement; Biology and medical computing; Velocity, acceleration and rotation measurement

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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2012.3763
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