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Sensors 2009, 9(11), 8579-8592; doi:10.3390/s91108579
Article

Optimal Sensor Location Design for Reliable Fault Detection in Presence of False Alarms

1,2
, 1,*  and 2
1 Department of Automation, Tsinghua University, Beijing 100084, China 2 Department of Chemical and Materials Engineering, University of Alberta, Edmonton, T6G 2G6, AB, Canada
* Author to whom correspondence should be addressed.
Received: 30 June 2009 / Revised: 24 August 2009 / Accepted: 29 September 2009 / Published: 27 October 2009
(This article belongs to the Special Issue Sensor Algorithms)
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Abstract

To improve fault detection reliability, sensor location should be designed according to an optimization criterion with constraints imposed by issues of detectability and identifiability. Reliability requires the minimization of undetectability and false alarm probability due to random factors on sensor readings, which is not only related with sensor readings but also affected by fault propagation. This paper introduces the reliability criteria expression based on the missed/false alarm probability of each sensor and system topology or connectivity derived from the directed graph. The algorithm for the optimization problem is presented as a heuristic procedure. Finally, a boiler system is illustrated using the proposed method.
Keywords: fault detection; directed graph; reliability; false alarm; missed alarm fault detection; directed graph; reliability; false alarm; missed alarm
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Yang, F.; Xiao, D.; Shah, S.L. Optimal Sensor Location Design for Reliable Fault Detection in Presence of False Alarms. Sensors 2009, 9, 8579-8592.

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