Fault-tolerant in wireless sensor networks using fuzzy logic
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2014, Vol 8, Issue 9
Abstract
A wireless sensor network with a large number of sensors to monitor the disposal of hazardous and inaccessible environments, placed. Sensors in wireless sensor networks due to energy depletion, hardware failure, software, and communication link errors, … may be damaged or fail. Thus, fault tolerance is one of the most important requirements for wireless sensor networks is considered. Fault tolerance means that In case of deterioration of sensors, network will continue to work correctly, without failure impact on network performance. In this paper, we propose algorithm for increasing fault tolerance Using fuzzy logic in wireless sensor networks. In the proposed algorithm, When the sensor is broken, The space covered by the sensor without cover remains and This space is lost due to sensor failure, by neighboring sensors faulty sensor are covered. the case that at each step of the algorithm, A neighbor of a faulty sensor that has a higher priority, to cover the lost space due to sensor failure is selected and it moves toward. To calculate prioritize neighbors, from fuzzy logic is used. Neighbor priority is based on the distance to the neighboring sensor faulty sensor, the distance to cluster heads, the amount of remaining energy and the amount overlapping sensing range neighbors sensors is determined. Then we compare the proposed algorithm with the algorithms FBFT, FTO, WCPZ. simulation results show that the proposed algorithm in terms of the motion sensors in the environment, fault-tolerant time, the amount of coverage has been better than the previous algorithm.
Authors and Affiliations
Sara Behzadi| Master student of Computer Software, Islamic Azad University, Science & Research Branch, saveh,email: srbehzadi@yahoo.com, Mohammad Azad| Faculty member, Islamic Azad University, Science & Research Branch, saveh
Keywords
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