Techno Press
You logged in as Techno Press

Smart Structures and Systems
  Volume 30, Number 5, November 2022 , pages 433-446

Wireless safety monitoring of a water pipeline construction site using LoRa communication
Sahyeon Lee, Sang-Kyun Gil, Soojin Cho, Sung Woo Shin and Sung-Han Sim

    Despite efforts to reduce unexpected accidents at confined construction sites, choking accidents continue to occur. Because of the poorly ventilated atmosphere, particularly in long, confined underground spaces, workers are subject to dangerous working conditions despite the use of artificial ventilation. Moreover, the traditional monitoring methods of using portable gas detectors place safety inspectors in direct contact with hazardous conditions. In this study, a long-range (LoRa)-based wireless safety monitoring system that features the network organization, fault-tolerant, power management, and a graphical user interface (GUI) was developed for underground construction sites. The LoRa wireless data communication system was adopted to detect hazardous gases and oxygen deficiency within a confined underground space with adjustable communication range and low power consumption. Fault tolerance based on the mapping information of the entire wireless sensor network was particularly implemented to ensure the reliable operation of the monitoring system. Moreover, a sleep mode was implemented for the efficient power management. The GUI was also developed to control the entire safety-monitoring system and to manage the measured data. The developed safety-monitoring system was validated in an indoor testing and at two full-scale water pipeline construction sites.
Key Words
    confined underground space; fault tolerance; LoRa communication; mapping information; underground construction site; wireless safety monitoring
(1) Sahyeon Lee, Sung-Han Sim:
School of Civil, Architectural Engineering and Landscape Architecture, Sungkyunkwan University, Suwon 16419, Republic of Korea;
(2) Sang-Kyun Gil:
Korea Water Resources Corporation (K-water), Daejeon 34350, Republic of Korea;
(3) Soojin Cho:
Department of Civil Engineering/Graduate School of Urban Big-data Convergence, University of Seoul, Seoul 02504, Republic of Korea;
(4) Sung Woo Shin:
Department of Safety Engineering, Pukyong National University, Busan 48513, Republic of Korea.

Techno-Press: Publishers of international journals and conference proceedings.       Copyright © 2023 Techno Press
P.O. Box 33, Yuseong, Daejeon 305-600 Korea, Tel: +82-42-828-7996, Fax : +82-42-828-7997, Email: