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Sensors 2016, 16(11), 1869; doi:10.3390/s16111869

Real-Time Location Tracking of Multiple Construction Laborers

1
R&D Center, SamwooIMC CO., LTD, Seoul 05660, Korea
2
Department of Civil Engineering, Inha University, Incheon 22212, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M.N. Passaro
Received: 16 July 2016 / Revised: 1 November 2016 / Accepted: 2 November 2016 / Published: 6 November 2016
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [5315 KB, uploaded 8 November 2016]   |  

Abstract

A real-time location (RTL) system was developed to improve safety for multiple laborers in confined construction sites. The RTL system can monitor the location and movement of multiple laborers in real time. A portable RTL system with a low-battery mode was developed to accommodate various constraints in the construction site. A conventional RTL system that uses radio signal strength indicators (RSSIs) has high error, so an accelerometer with Bluetooth Low Energy (BLE) was added, and a calculation process is suggested. Field tests were performed for validation in underground construction and bridge overlay sites. The results show that the accelerometer and BLE can be used as effective sensors to detect the movement of laborers. When the sensor is fixed, the average error ranges 0.2–0.22 m, and when the sensor is moving, the average error ranges 0.1–0.47 m. View Full-Text
Keywords: construction site; RTL system; radio signal strength indicator; accelerometer construction site; RTL system; radio signal strength indicator; accelerometer
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Lim, J.-S.; Song, K.-I.; Lee, H.-L. Real-Time Location Tracking of Multiple Construction Laborers. Sensors 2016, 16, 1869.

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