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Smart Structures and Systems
  Volume 6, Number 5, July-August 2010, pages 619-639
DOI: http://dx.doi.org/10.12989/sss.2010.6.5_6.619
 


Wireless sensor networks for underground railway applications: case studies in Prague and London
Peter J. Bennett, Kenichi Soga, Ian Wassell, Paul Fidler, Keita Abe, Yusuke Kobayashi and Martin Vanicek

 
Abstract
    There is increasing interest in using structural monitoring as a cost effective way of managing risks once an area of concern has been identified. However, it is challenging to deploy an effective, reliable, large-scale, long-term and real-time monitoring system in an underground railway environment (subway / metro). The use of wireless sensor technology allows for rapid deployment of a monitoring scheme and thus has significant potential benefits as the time available for access is often severely limited. This paper identifies the critical factors that should be considered in the design of a wireless sensor network, including the availability of electrical power and communications networks. Various issues facing underground deployment of wireless sensor networks will also be discussed, in particular for two field case studies involving networks deployed for structural monitoring in the Prague Metro and the London Underground. The paper describes the network design, the radio propagation, the network topology as well as the practical issues involved in deploying a wireless sensor network in these two tunnels.
 
Key Words
    tunnel; wireless sensor network; monitoring.
 
Address
Peter J. Bennett and Kenichi Soga; Department of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, UK
Ian Wassell; Computer Laboratory, University of Cambridge, William Gates Building, 15 JJ Thomson Avenue, Cambridge CB3 0FD, UK
Paul Fidler; Department of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, UK
Keita Abe and Yusuke Kobayashi; Japan Railway Technical Research Institute, Japan
Martin Vanicek; Czech Technical University in Prague, Zikova 4, 166 36, Prague 6, Czech Republic
 

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