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Proceedings Paper

Estimation of walking trajectory using ankle-mounted sensor
Author(s): Keita Mishima; Sagawa Koichi
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Paper Abstract

Estimation of walking trajectory using ankle-mounted sensor is discussed. The three-dimensional walking distance is delivered by the integration of the three-dimensional acceleration of ankle during swing phase. Since the sensor system is attached on the ankle, the acceleration data measured on the ankle include acceleration of gravity that causes inaccurate calculation of the velocity and the distance. Three gyros are used to compensate the rotation of the sensor system. Healthy volunteers performed level walk, ascending and descending to verify the proposed method. And the experimental results showed that the estimation error of the distance in level walk was -6.9 [%] on average and the estimation errors of the height in ascending and descending were 4.5 [%] and -22.0 [%] on average.

Paper Details

Date Published: 9 January 2008
PDF: 7 pages
Proc. SPIE 6794, ICMIT 2007: Mechatronics, MEMS, and Smart Materials, 67943S (9 January 2008); doi: 10.1117/12.783976
Show Author Affiliations
Keita Mishima, Hirosaki Univ. (Japan)
Sagawa Koichi, Hirosaki Univ. (Japan)


Published in SPIE Proceedings Vol. 6794:
ICMIT 2007: Mechatronics, MEMS, and Smart Materials

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