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Gait posture estimation using wearable acceleration and gyro sensors

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Title: Gait posture estimation using wearable acceleration and gyro sensors
Authors: Takeda, Ryo Browse this author
Tadano, Shigeru Browse this author →KAKEN DB
Natorigawa, Akiko Browse this author
Todoh, Masahiro Browse this author →KAKEN DB
Yoshinari, Satoshi Browse this author
Keywords: Gait analysis
Acceleration sensor
Gyro sensor
Issue Date: 13-Nov-2009
Publisher: Elsevier Ltd.
Journal Title: Journal of Biomechanics
Volume: 42
Issue: 15
Start Page: 2486
End Page: 2494
Publisher DOI: 10.1016/j.jbiomech.2009.07.016
PMID: 19682694
Abstract: A method for gait analysis using wearable acceleration sensors and gyro sensors is proposed in this work. The volunteers wore sensor units that included a tri-axis acceleration sensor and three single axis gyro sensors. The angular velocity data measured by the gyro sensors were used to estimate the translational acceleration in the gait analysis. The translational acceleration was then subtracted from the acceleration sensor measurements to obtain the gravitational acceleration, giving the orientation of the lower limb segments. Segment orientation along with body measurements were used to obtain the positions of hip, knee, and ankle joints to create stick figure models of the volunteers. This method can measure the three dimensional positions of joint centers of the hip, knee, and ankle during movement. Experiments were carried out on the normal gait of three healthy volunteers. As a result, the flexion-extension (F-E) and the adduction-abduction (A-A) joint angles of the hips and the flexion-extension (F-E) joint angles of the knees were calculated and compared with a camera motion capture system. The correlation coefficients were above 0.88 for the hip F-E, higher than 0.721 for the hip A-A, better than 0.924 for the knee F-E. A moving stick figure model of each volunteer was created to visually confirm the walking posture. Further, the knee and ankle joint trajectories in the horizontal plane showed that the left and right legs were bilaterally symmetric.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 但野 茂

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