ID:
publications-4348
Type:
article
Year:
2008
Authors:
Preis, Ami and Ostfeld, Avi
Title:
MULTIOBJECTIVE SENSOR DESIGN FOR WATER DISTRIBUTION SYSTEMS SECURITY
Venue/Journal:
DOI:
10.1061/40941(247)107
Research type:
Water System:
Technical Focus:
Abstract:
This paper presents a multiobjective model to optimal sensor design in water distribution systems as part of the battle of the water sensors networks (BWSN). Previous work on optimal sensor design for water distribution systems (WDS) focused on one objective (e.g., maximizing the detection likelihood of contamination events). In this study the Non-Dominated Sorted Genetic Algorithm–II (NSGA-II) is implemented to tradeoff the following four conflicting objectives: (1) maximizing the detection likelihood; (2) minimizing the detection time; (3) maximizing the detection instrumentation redundancy; and (4) maximizing the contamination source identification likelihood (i.e., the likelihood to provide a unique solution to the inverse problem of contamination source identification for a given layout of sensors). The effectiveness of the multiobjective approach is demonstrated through using the two BWSN network examples, where Pareto fronts are plotted for each two objectives; for each three; and finally for all four.
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