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Proceedings Paper

Gas-leak localization using distributed ultrasonic sensors
Author(s): Javid Huseynov; Shankar Baliga; Michael Dillencourt; Lubomir Bic; Nader Bagherzadeh
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Paper Abstract

We propose an ultrasonic gas leak localization system based on a distributed network of sensors. The system deploys highly sensitive miniature Micro-Electro-Mechanical Systems (MEMS) microphones and uses a suite of energy-decay (ED) and time-delay of arrival (TDOA) algorithms for localizing a source of a gas leak. Statistical tools such as the maximum likelihood (ML) and the least squares (LS) estimators are used for approximating the source location when closed-form solutions fail in the presence of ambient background nuisance and inherent electronic noise. The proposed localization algorithms were implemented and tested using a Java-based simulation platform connected to four or more distributed MEMS microphones observing a broadband nitrogen leak from an orifice. The performance of centralized and decentralized algorithms under ED and TDOA schemes is analyzed and compared in terms of communication overhead and accuracy in presence of additive white Gaussian noise (AWGN).

Paper Details

Date Published: 7 April 2009
PDF: 18 pages
Proc. SPIE 7293, Smart Sensor Phenomena, Technology, Networks, and Systems 2009, 72930Z (7 April 2009); doi: 10.1117/12.812058
Show Author Affiliations
Javid Huseynov, Univ. of California, Irvine (United States)
General Monitors Transnational (United States)
Shankar Baliga, General Monitors Transnational (United States)
Michael Dillencourt, Univ. of California, Irvine (United States)
Lubomir Bic, Univ. of California, Irvine (United States)
Nader Bagherzadeh, Univ. of California, Irvine (United States)

Published in SPIE Proceedings Vol. 7293:
Smart Sensor Phenomena, Technology, Networks, and Systems 2009
Norbert G. Meyendorf; Kara J. Peters; Wolfgang Ecke, Editor(s)

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