Applying Time Series Analysis and Neighbourhood Voting in a Decentralised Approach for Fault Detection and Classification in WSNs

Tuan Anh Nguyen, Doina Bucur, Marco Aiello, Kenji Tei

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

18 Citations (Scopus)

Abstract

In pervasive computing environments, wireless sensor networks play an important infrastructure role, collecting reliable and accurate context information so that applications are able to provide services to users on demand. In such environments, sensors should be self-adaptive by taking correct decisions based on sensed data in real-time in a decentralised manner; however, sensed data is often faulty. We thus design a decentralised scheme for fault detection and classification in sensor data in which each sensor node does localised fault detection. A combination of neighbourhood voting and time series data analysis techniques are used to detect faults. We also study the comparative accuracy of both the union and the intersection of the two techniques. Then, detected faults are classified into known fault categories. An initial evaluation with SensorScope, an outdoor temperature dataset, confirms that our solution is able to detect and classify faulty readings into four fault types, namely, 1) random, 2) mal-function, 3) bias, and 4) drift with accuracy up to 95%. The results also show that, with the experimental dataset, the time series data analysis technique performs comparable well in most of the cases, whilst in some other cases the support from neighbourhood voting technique and histogram analysis helps our hybrid solution to successfully detects the faults of all types.
Original languageEnglish
Title of host publicationSoICT '13. Proceedings of the Fourth Symposium on Information and Communication Technology
PublisherAssociation for Computing Machinery (ACM)
Pages234-241
Number of pages8
ISBN (Print)978-1-4503-2454-0
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event4th International Symposium on Information and Communication Technology 2013 - Danang, Viet Nam
Duration: 5 Dec 20136 Dec 2013
Conference number: 4

Conference

Conference4th International Symposium on Information and Communication Technology 2013
Abbreviated titleSoICT 2013
CountryViet Nam
CityDanang
Period5/12/136/12/13

Keywords

  • decentralised fault tolerance, online sensory data fault handling, wireless sensor networks

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