ID:
publications-4265
Type:
article
Year:
2003
Authors:
Berry, Jonathan W. and Fleischer, Lisa and Hart, William E. and Phillips, Cynthia A.
Title:
Sensor Placement in Municipal Water Networks
Venue/Journal:
DOI:
10.1061/40685(2003)40
Research type:
Water System:
Technical Focus:
Abstract:
In this paper we present a model for optimizing the placement of sensors in municipal water networks to detect maliciously-injected contaminants. Optimal sensor placement is required to ensure an adequate coverage of the network's flow for detection and remediation of contaminants. There are many possible objectives that could be formulated for optimal sensor placement, reflecting various costs and risks of an attack on a network. Previous work has focused on detection before a given volume of water has been consumed and detection within a given time limit. Additionally, Tryby et al. present related work on the placement of disinfectant booster station. We consider a sensor placement formulation for which optimal sensor configurations minimize the expected fraction of the population that is at risk for an attack. We model an attack as the release of a large volume of harmful contaminant at a single point in the network with a single injection. For any particular attack, we assume that all points "downstream" of the release point (connected by a set of directed edges) can be contaminated. In general, we do not know a priori where this attack will occur, so our objective is to place sensors to provide a compromise solution across a set of weighted attack scenarios.
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