Gait velocity estimation using time-interleaved between consecutive passive IR sensor activations
Article
Article Title | Gait velocity estimation using time-interleaved between consecutive passive IR sensor activations |
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ERA Journal ID | 4437 |
Article Category | Article |
Authors | Rana, Rajib (Author), Austin, Daniel (Author), Jacobs, Peter G. (Author), Karunanithi, Mohanraj (Author) and Kaye, Jeffrey (Author) |
Journal Title | IEEE Sensors Journal |
Journal Citation | 16 (16), pp. 6351-6358 |
Number of Pages | 8 |
Year | 2016 |
Publisher | IEEE (Institute of Electrical and Electronics Engineers) |
Place of Publication | United States |
ISSN | 1530-437X |
1558-1748 | |
Digital Object Identifier (DOI) | https://doi.org/10.1109/JSEN.2016.2577708 |
Web Address (URL) | http://ieeexplore.ieee.org/document/7486123/?reload=true |
Abstract | Gait velocity has been consistently shown to be an important indicator and predictor of health status, especially in older adults. It is often assessed clinically, but the assessments occur infrequently and do not allow optimal detection of key health changes when they occur. In this paper, we show that the time gap between activations of a pair of passive infrared motion sensors in the consecutively visited room-pair carry rich latent information about a person’s gait velocity. We name this time gap transition time and modeling the relationship between transition time and gait velocity, and using a support vector regression approach, we show that gait velocity can be estimated with an average error of <2.5 cm/s. Our method is simple and cost effective and has advantages over competing approaches such as: obtaining 20–100 times more gait velocity measurements per day. It also provides a pervasive in-home method for contextaware gait velocity sensing that allows for monitoring of gait trajectories in space and time. |
Keywords | gait velocity, passive infrared (PIR) motion sensors, transition time, support vector regression |
ANZSRC Field of Research 2020 | 461199. Machine learning not elsewhere classified |
Public Notes | © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. |
Byline Affiliations | Institute for Resilient Regions |
Oregon Health and Science University, United States | |
Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3qx3/gait-velocity-estimation-using-time-interleaved-between-consecutive-passive-ir-sensor-activations
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