Gait measurement system for the elderly using laser range sensor

Ayanori Yorozu, Masaki Takahashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Gait measurement is important in various applications such as monitoring systems for the elderly. This paper presents a gait measurement system applicable to the elderly using a laser range sensor (LRS). An LRS can obtain high accuracy distance data over a wide range and leg position can be calculated based on characteristic leg patterns from the scan data. However, situations in which a leg is hidden from the LRS or both legs are too close together lead to false tracking or losing track of both legs entirely. In the case of the elderly in particular, these situations are likely to occur due to slow movement or narrow stride. To solve these problems, we present a novel leg detection method with five observed leg patterns and global nearest neighbor (GNN)-based data association, using a variable gate based on the state of each leg. Experimental results of several elderly people show that the proposed system can reduce the chances of both false tracking and losing track of both legs, and can acquire the accurate trajectory of both legs.

Original languageEnglish
Title of host publicationMechanical Design and Power Engineering
Pages1629-1635
Number of pages7
DOIs
Publication statusPublished - 2014 Feb 20
Event2013 2nd International Conference on Mechanical Design and Power Engineering, ICMDPE 2013 - Beijing, China
Duration: 2013 Nov 292013 Nov 30

Publication series

NameApplied Mechanics and Materials
Volume490-491
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Other

Other2013 2nd International Conference on Mechanical Design and Power Engineering, ICMDPE 2013
CountryChina
CityBeijing
Period13/11/2913/11/30

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Keywords

  • Data association
  • Gait measurement system
  • Global nearest neighbor
  • Kalman filter
  • Laser range sensor

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Yorozu, A., & Takahashi, M. (2014). Gait measurement system for the elderly using laser range sensor. In Mechanical Design and Power Engineering (pp. 1629-1635). (Applied Mechanics and Materials; Vol. 490-491). https://doi.org/10.4028/www.scientific.net/AMM.490-491.1629