Efficient Fault-Tolerant Event Query Algorithm in Distributed Wireless Sensor Networks. (30th June 2010)

• Record Type: Journal Article
• Authors: Zhu, Rongbo
• Is Part Of: International journal of distributed sensor networks. (2010)
• Publication Date: 2010-06-30
• Subjects: Sensor networks -- Periodicals; Intelligent agents (Computer software) -- Periodicals; Multisensor data fusion -- Periodicals; 681.2
• DOI: 10.1155/2010/593849
• Languages: English
• ISSNs: 1550-1329

Abstract

Abstract : To overcome the faulty data query problem to improve the accuracy of data query, an efficient fault-tolerant event query algorithm (FTEQ) is proposed, which takes the short-term and long-term spatial and temporal similarities between sensors and environment into considerations. An imprecise and missing data correction algorithm based on Kalman filter is proposed to correct fault sensing data, and a score rank algorithm also is proposed to assign each sensor an appropriate value to reflect the importance of sensors. FTEQ performs self-evaluation and cooperative evaluation schemes with its trustful r neighbor nodes to filter fault data query with the importance of sensor. Simulation results prove that FTEQ performs extremely well in terms of faulty detection rate and data query cost.