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Open AccessArticle

A Mobility-Aware Adaptive Duty Cycling Mechanism for Tracking Objects during Tunnel Excavation

Department of Civil Engineering, Hongik University, Seoul 04066, Korea
School of Computer and Information Engineering, Hoseo University, Asan 31499, Korea
Department of Information and Communication Engineering, Hannam University, Daejeon 34430, Korea
Author to whom correspondence should be addressed.
Academic Editor: Dongkyun Kim
Sensors 2017, 17(3), 435;
Received: 31 October 2016 / Revised: 16 February 2017 / Accepted: 17 February 2017 / Published: 23 February 2017
PDF [5028 KB, uploaded 23 February 2017]


Tunnel construction workers face many dangers while working under dark conditions, with difficult access and egress, and many potential hazards. To enhance safety at tunnel construction sites, low latency tracking of mobile objects (e.g., heavy-duty equipment) and construction workers is critical for managing the dangerous construction environment. Wireless Sensor Networks (WSNs) are the basis for a widely used technology for monitoring the environment because of their energy-efficiency and scalability. However, their use involves an inherent point-to-point delay caused by duty cycling mechanisms that can result in a significant rise in the delivery latency for tracking mobile objects. To overcome this issue, we proposed a mobility-aware adaptive duty cycling mechanism for the WSNs based on object mobility. For the evaluation, we tested this mechanism for mobile object tracking at a tunnel excavation site. The evaluation results showed that the proposed mechanism could track mobile objects with low latency while they were moving, and could reduce energy consumption by increasing sleep time while the objects were immobile. View Full-Text
Keywords: tunnel excavation; WSNs; adaptive duty cycle; mobility tunnel excavation; WSNs; adaptive duty cycle; mobility

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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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Kim, T.; Min, H.; Jung, J. A Mobility-Aware Adaptive Duty Cycling Mechanism for Tracking Objects during Tunnel Excavation. Sensors 2017, 17, 435.

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