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A Wireless Sensor Network for Hospital Security: From User Requirements to Pilot Deployment

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Abstract

Increasing amount of Wireless Sensor Network (WSN) applications require low network delays. However, current research on WSNs has mainly concentrated on optimizing energy-efficiency omitting low network delays. This paper presents a novel WSN design targeted at applications requiring low data transfer delays and high reliability. We present the whole design flow from user requirements to an actual pilot deployment in a real hospital unit. The WSN includes multihop low-delay data transfer and energy-efficient mobile nodes reaching lifetime of years with small batteries. The nodes communicate using a low-cost low-power 2.4 GHz radio. The network is used in a security application with which personnel can send alarms in threatening situations. Also, a multitude of sensor measurements and actuator control is possible with the WSN. A full-scale pilot deployment is extensively experimented for performance results. Currently, the pilot network is in use at the hospital.

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Correspondence to Ville Kaseva.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Kaseva, V., Hämäläinen, T.D. & Hännikäinen, M. A Wireless Sensor Network for Hospital Security: From User Requirements to Pilot Deployment. J Wireless Com Network 2011, 920141 (2011) doi:10.1155/2011/920141

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Keywords

  • Wireless Sensor Network
  • Mobile Node
  • Data Transfer
  • User Requirement
  • Design Flow