Rebar Worker Analysis Using a 3-Axis Accelerometer

The purpose of the present study is to grasp the situation of construction sites easily by distinguishing the movements of construction workers at construction sites from the accelerometer data attached to their waists. For the construction manager to accurately perceive the active or inactive state...

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Autores principales:	Takuma Akaki, Tomoyuki Gondo
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	accelerometer construction sites workers motion discrimination rebar Engineering (General). Civil engineering (General) TA1-2040 City planning HT165.5-169.9
Acceso en línea:	https://doaj.org/article/8785d022145d4820900ccf603464a15b
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id	oai:doaj.org-article:8785d022145d4820900ccf603464a15b
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spelling	oai:doaj.org-article:8785d022145d4820900ccf603464a15b2021-12-03T06:59:17ZRebar Worker Analysis Using a 3-Axis Accelerometer2297-336210.3389/fbuil.2021.721742https://doaj.org/article/8785d022145d4820900ccf603464a15b2021-12-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fbuil.2021.721742/fullhttps://doaj.org/toc/2297-3362The purpose of the present study is to grasp the situation of construction sites easily by distinguishing the movements of construction workers at construction sites from the accelerometer data attached to their waists. For the construction manager to accurately perceive the active or inactive state of his workers, their movements were classified into three distinct categories: walking, standing, and sitting. We tracked and observed two rebar workers for 5 days at a large building construction site. Their movements were classified by two-axis plots of (1) the difference between the maximum and minimum absolute values and (2) the value of acceleration at each second, and visualized by a heatmap among others for this trial. The results showed that despite the difficulty in distinguishing rebar work without a total body movement while sitting, the accuracy of discrimination was 60–80% in walking and sitting. From this analysis, we were able to identify repetitive tasks and the differences between morning and afternoon tasks. Furthermore, by applying simple visualization, we could concisely represent changes in work intensity over a relatively long period.Takuma AkakiTomoyuki GondoFrontiers Media S.A.articleaccelerometerconstruction sitesworkersmotiondiscriminationrebarEngineering (General). Civil engineering (General)TA1-2040City planningHT165.5-169.9ENFrontiers in Built Environment, Vol 7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	accelerometer construction sites workers motion discrimination rebar Engineering (General). Civil engineering (General) TA1-2040 City planning HT165.5-169.9
spellingShingle	accelerometer construction sites workers motion discrimination rebar Engineering (General). Civil engineering (General) TA1-2040 City planning HT165.5-169.9 Takuma Akaki Tomoyuki Gondo Rebar Worker Analysis Using a 3-Axis Accelerometer
description	The purpose of the present study is to grasp the situation of construction sites easily by distinguishing the movements of construction workers at construction sites from the accelerometer data attached to their waists. For the construction manager to accurately perceive the active or inactive state of his workers, their movements were classified into three distinct categories: walking, standing, and sitting. We tracked and observed two rebar workers for 5 days at a large building construction site. Their movements were classified by two-axis plots of (1) the difference between the maximum and minimum absolute values and (2) the value of acceleration at each second, and visualized by a heatmap among others for this trial. The results showed that despite the difficulty in distinguishing rebar work without a total body movement while sitting, the accuracy of discrimination was 60–80% in walking and sitting. From this analysis, we were able to identify repetitive tasks and the differences between morning and afternoon tasks. Furthermore, by applying simple visualization, we could concisely represent changes in work intensity over a relatively long period.
format	article
author	Takuma Akaki Tomoyuki Gondo
author_facet	Takuma Akaki Tomoyuki Gondo
author_sort	Takuma Akaki
title	Rebar Worker Analysis Using a 3-Axis Accelerometer
title_short	Rebar Worker Analysis Using a 3-Axis Accelerometer
title_full	Rebar Worker Analysis Using a 3-Axis Accelerometer
title_fullStr	Rebar Worker Analysis Using a 3-Axis Accelerometer
title_full_unstemmed	Rebar Worker Analysis Using a 3-Axis Accelerometer
title_sort	rebar worker analysis using a 3-axis accelerometer
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/8785d022145d4820900ccf603464a15b
work_keys_str_mv	AT takumaakaki rebarworkeranalysisusinga3axisaccelerometer AT tomoyukigondo rebarworkeranalysisusinga3axisaccelerometer
_version_	1718373883252310016

Rebar Worker Analysis Using a 3-Axis Accelerometer

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