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IMU-based underwater sensing system for swimming stroke classification and motion analysis

  • Zhendong Zhang
  • , Dongfang Xu
  • , Zhihao Zhou
  • , Jingeng Mai
  • , Zhongkai He
  • , Qining Wang
  • Peking University
  • Beijing Engineering Research Center of Intelligent Rehabilitation Engineering

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Swimming stroke classification and underwater motion analysis are important in swimming training. In this paper, we propose an IMU-based wearable sensing system for recognizing swimming strokes and motion analysis, focusing on lower-limb movements. The system measures 12 channels of posture signals from the shank, the thigh, and the foot of two legs. Three competitive swimmers were recruited in experiments. With a stroke-dependent quadratic discriminant analysis classifier and selected time-domain features, the proposed system can achieve a satisfactory classification accuracy of 98.63%±1.9%, 99.04%±0.91%, 99.10%±1.43%, 97.24%±1.71% for butterfly stroke, breaststroke, backstroke, front crawl, respectively. Besides, we carry out kinematics analysis of breaststroke. Preliminary results show that the IMU-based sensing system can be used for both swimming stroke classification and motion analysis.

Original languageEnglish
Title of host publication2017 IEEE International Conference on Cyborg and Bionic Systems, CBS 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages268-272
Number of pages5
ISBN (Electronic)9781538631942
DOIs
StatePublished - 2 Jul 2017
Externally publishedYes
Event2017 IEEE International Conference on Cyborg and Bionic Systems, CBS 2017 - Beijing, China
Duration: 17 Oct 201719 Oct 2017

Publication series

Name2017 IEEE International Conference on Cyborg and Bionic Systems, CBS 2017
Volume2018-January

Conference

Conference2017 IEEE International Conference on Cyborg and Bionic Systems, CBS 2017
Country/TerritoryChina
CityBeijing
Period17/10/1719/10/17

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