Ankle and knee joint angle measurements during gait with wearable sensor system for rehabilitation

Hiroki Saito, Takashi Watanabe, Achmad Arifin

研究成果: Conference contribution

29 被引用数 (Scopus)

抄録

A method of joint angle measurement during gait using wearable sensors for rehabilitation was studied in this paper. The method corrected joint angles measured by gyroscopes using joint angles measured by accelerometers with Kalman filter. Although gyroscopes could measure joint angles, their offset drift caused error in measurement of joint angles. At first, we made up small sensor units consist of a gyroscope and an accelerometer. Then, the method was validated with the developed sensor units in measurement of ankle and knee joint angles of three healthy subjects under walking on short distance pathway and on treadmill for long time. The measured joint angles were compared with reference joint angles measured with optical motion measurement system simultaneously. The result for short distance walking showed low RMS errors and high correlation coefficients (3.19deg and 0.918 for the ankle joint, 2.98deg and 0.993 for the knee joint in average). The result for treadmill walking also showed low RMS errors and high correlation coefficients (3.04deg and 0.960 for the ankle, 4.19deg and 0.994 for the knee in average). Although the measurement accuracy decreased in some of trials of a specific subject because of sensor attachment position, the experimental results suggested that joint angle could be measured with good accuracy independent of measurement period of time, walking speeds and subjects.

本文言語English
ホスト出版物のタイトルWorld Congress on Medical Physics and Biomedical Engineering
ホスト出版物のサブタイトルNeuroengineering, Neural Systems, Rehabilitation and Prosthetics
出版社Springer Verlag
ページ506-509
ページ数4
9
ISBN(印刷版)9783642038884
DOI
出版ステータスPublished - 2009
イベントWorld Congress on Medical Physics and Biomedical Engineering: Neuroengineering, Neural Systems, Rehabilitation and Prosthetics - Munich, Germany
継続期間: 2009 9 72009 9 12

出版物シリーズ

名前IFMBE Proceedings
番号9
25
ISSN(印刷版)1680-0737

Other

OtherWorld Congress on Medical Physics and Biomedical Engineering: Neuroengineering, Neural Systems, Rehabilitation and Prosthetics
国/地域Germany
CityMunich
Period09/9/709/9/12

ASJC Scopus subject areas

  • バイオエンジニアリング
  • 生体医工学

フィンガープリント

「Ankle and knee joint angle measurements during gait with wearable sensor system for rehabilitation」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