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Sensors 2009, 9(12), 9925-9944; doi:10.3390/s91209925

Locating Acoustic Events Based on Large-Scale Sensor Networks

Department of Computer Science, Yonsei University, Seodaemungu, Shinchondong, Seoul, Korea
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Received: 12 October 2009 / Revised: 16 November 2009 / Accepted: 18 November 2009 / Published: 7 December 2009
(This article belongs to the Section Chemical Sensors)

Abstract

Research on acoustic source localization is actively being conducted to enhance accuracy and coverage. However, the performance is inherently limited due to the use of expensive sensor nodes and inefficient communication methods. This paper proposes an acoustic source localization algorithm for a large area that uses low-cost sensor nodes. The proposed mechanism efficiently handles multiple acoustic sources by removing false-positive errors that arise from the different propagation ranges of radio and sound. Extensive outdoor experiments with real hardware validated that the proposed mechanism could localize four acoustic sources within a 3 m error in a 60 m by 60 m area, where conventional systems could hardly achieve similar performance. View Full-Text
Keywords: acoustic source localization; sensor network acoustic source localization; sensor network
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Kim, Y.; Ahn, J.; Cha, H. Locating Acoustic Events Based on Large-Scale Sensor Networks. Sensors 2009, 9, 9925-9944.

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