A wearable physical activity sensor system: Its classification algorithm and performance comparison of different sensor placements

Jeen Shing Wang, Fang Chen Chuang, Ya Ting C. Yang

研究成果: Conference contribution

2 引文 斯高帕斯(Scopus)

摘要

This paper presents a wearable physical activity sensor system and its activity classification algorithm. In addition, we investigate possible combinations of different sensor placements, and identify an optimal combination to achieve the best classification performance. The sensor system consists of several sensor modules that can be synchronized to record the accelerations of diverse motions/activities. In our experiment, three sensor modules are mounted on participants' hand wrists, waists, and ankles, respectively, to collect seven categories of activity accelerations. The proposed classification algorithm consisting of acceleration acquisition, signal preprocessing, feature generation, and feature reduction, is capable of translating time-series acceleration signals into important time- and frequency-domain feature vectors. The dimension of features is reduced by linear discriminate analysis (LDA), and then the reduced features are sent to a k-nearest neighbor (k-NN) classifier for classification. Our experimental results have successfully validated the effectiveness of the proposed classification algorithm. The best classification accuracy is 96.98% when the sensor modules are placed on hand and ankle simultaneously.

原文English
主出版物標題Advanced Intelligent Computing Theories and Applications
主出版物子標題With Aspects of Artificial Intelligence - 7th International Conference, ICIC 2011 - Revised Selected Papers
頁面447-454
頁數8
DOIs
出版狀態Published - 2011 十二月 1
事件7th International Conference on Intelligent Computing, ICIC 2011 - Zhengzhou, China
持續時間: 2011 八月 112011 八月 14

出版系列

名字Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
6839 LNAI
ISSN(列印)0302-9743
ISSN(電子)1611-3349

Other

Other7th International Conference on Intelligent Computing, ICIC 2011
國家/地區China
城市Zhengzhou
期間11-08-1111-08-14

All Science Journal Classification (ASJC) codes

  • 理論電腦科學
  • 電腦科學(全部)

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