A study on IMU-based stride length estimation for motor disabled subjects: A comparison under different calculation methods of rotation matrix

Takashi Watanabe, Tasuku Miyazawa, Jun Shibasaki

研究成果: Conference contribution

10 被引用数 (Scopus)

抄録

Measurement with a single inertial motion measurement unit (IMU) can be useful for monitoring gait information in rehabilitation at hospital or healthcare at home. This study focused on stride length estimation with an IMU because our preliminary study showed different estimation errors between some hemiplegic subjects. This was considered to be caused by differences of foot movements during walking between healthy subjects and paralyzed subjects. Therefore, this study aimed at evaluating estimation error of stride lengths under different calculation methods of rotation matrix that is needed to obtain foot orientation. Experimental results showed that the rotation matrix calculated from Euler angles could be effective for gaits of healthy subjects, but not for some of paralyzed subjects. The rotation matrix calculated from quaternion was shown to be effective for both healthy and paralyzed subjects. Mean absolute error of stride length estimation with the quaternion-based method was smaller than about 5% for healthy subjects and the non-paralyzed side of hemiplegic subjects and smaller than 6% for paralyzed side of the hemiplegic subjects. Average values of estimation error were less than -4% for 3 hemiplegic subjects. Stride length estimation method and correction method of integration error would be required to be evaluated with many motor disabled subjects.

本文言語English
ホスト出版物のタイトル2018 IEEE EMBS International Conference on Biomedical and Health Informatics, BHI 2018
出版社Institute of Electrical and Electronics Engineers Inc.
ページ70-73
ページ数4
ISBN(電子版)9781538624050
DOI
出版ステータスPublished - 2018 4 6
イベント2018 IEEE EMBS International Conference on Biomedical and Health Informatics, BHI 2018 - Las Vegas, United States
継続期間: 2018 3 42018 3 7

出版物シリーズ

名前2018 IEEE EMBS International Conference on Biomedical and Health Informatics, BHI 2018
2018-January

Other

Other2018 IEEE EMBS International Conference on Biomedical and Health Informatics, BHI 2018
国/地域United States
CityLas Vegas
Period18/3/418/3/7

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • 生体医工学
  • 健康情報学

フィンガープリント

「A study on IMU-based stride length estimation for motor disabled subjects: A comparison under different calculation methods of rotation matrix」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル