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19544 Opportunistic Sensing in Wireless Sensor Networks
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Scholten, J. and Bakker, P. (2011) Opportunistic Sensing in Wireless Sensor Networks. In: Tenth International Conference on Networks, ICN 2011, 23-28 Jan 2011, St. Maarten, The Netherlands Antilles. pp. 224-229. IARIA. ISBN 978-1-61208-002-4

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Opportunistic sensing systems consist of changing constellations of wireless sensor nodes that, for a limited amount of time, work together to achieve a common goal. Such constellations are self-organizing and come into being spontaneously. This paper presents an opportunistic sensing system to select a subset of sensor nodes out of a larger set based on a common context. We show that it is possible to use a wireless sensor network to make a distinction between carriages from different trains. The common context in this case is acceleration, which is used to select a subset of carriages that belong to the same train. Simulations based on a realistic set of sensor data establish that the method is valid, but that the algorithm is too complex for implementation. Downscaling reduces the number of processor execution cycles as well as memory usage, and makes the algorithm suitable for implementation on a wireless sensor node with acceptable loss of precision. Actual implementation on wireless sensor nodes confirms the results obtained with the simulations.

Item Type:Conference or Workshop Paper (Full Paper, Talk)
Research Group:EWI-PS: Pervasive Systems
Research Program:CTIT-WiSe: Wireless and Sensor Systems
Research Project:iLand: Middleware for deterministic dynamically reconfigurable networked embedded systems
Uncontrolled Keywords:opportunistic sensing, wireless sensor network, context awareness, activity recognition
ID Code:19544
Deposited On:01 February 2011
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