Grid-based Fault-Tolerant Event Detection in Wireless Sensor Networks
- Authors
- Lee, Myeong-Hyeon; Yim, Sung-Jib; Choi, Yoon-Hwa
- Issue Date
- 2009
- Publisher
- IEEE
- Citation
- TENCON 2009 - 2009 IEEE REGION 10 CONFERENCE, VOLS 1-4, pp.1879 - 1883
- Journal Title
- TENCON 2009 - 2009 IEEE REGION 10 CONFERENCE, VOLS 1-4
- Start Page
- 1879
- End Page
- 1883
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/29751
- ISSN
- 0886-1420
- Abstract
- In this paper, we present a grid-based fault-tolerant event detection scheme for wireless sensor networks. The sensor field is divided into square-shaped cells, called virtual grids here, where sensor nodes in each grid form a cluster. Each grid is further divided into subgrids of equal size. Each cluster head receives sensor readings of its member nodes and counts the number of sensor nodes reporting a "1" (an unusual reading) in each of its subgrids. An event is detected by applying a threshold test and finding square regions with highest detection rate. Cluster heads communicate with their neighboring cluster heads to exchange the numbers of nodes reporting a 1, requiring only a small amount of communication overhead to make a final decision on an event. High event detection performance is achieved even for a relatively high fault probability by employing a moving average filter to tolerate most transient faults. Computer simulation shows that the proposed scheme can achieve extremely low false alarm rate, while maintaining high event detection accuracy.
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Collections - Department of General Studies > Department of General Studies > 1. Journal Articles
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