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Sensors 2015, 15(12), 31620-31643; doi:10.3390/s151229875

Event Coverage Detection and Event Source Determination in Underwater Wireless Sensor Networks

1
School of Computer & Communication Engineering, University of Science & Technology Beijing, Beijing 100083, China
2
School of Information Engineering, China University of Geosciences (Beijing), Beijing 100083, China
3
Computer Science Department, TELECOM SudParis, Evry 91 011, France
4
College of Information Science and Technology, Hainan University, Haikou 570228, China
5
Development Research Center of China Geological Survey, and Key Laboratory of Geological Information Technology, Ministry of Land and Resources, Beijing 100037, China
*
Author to whom correspondence should be addressed.
Academic Editors: Yunchuan Sun, Antonio Jara and Shengling Wang
Received: 10 November 2015 / Revised: 5 December 2015 / Accepted: 11 December 2015 / Published: 15 December 2015
(This article belongs to the Special Issue Identification, Information & Knowledge in the Internet of Things)
View Full-Text   |   Download PDF [728 KB, uploaded 15 December 2015]   |  

Abstract

With the advent of the Internet of Underwater Things, smart things are deployed in the ocean space and establish underwater wireless sensor networks for the monitoring of vast and dynamic underwater environments. When events are found to have possibly occurred, accurate event coverage should be detected, and potential event sources should be determined for the enactment of prompt and proper responses. To address this challenge, a technique that detects event coverage and determines event sources is developed in this article. Specifically, the occurrence of possible events corresponds to a set of neighboring sensor nodes whose sensory data may deviate from a normal sensing range in a collective fashion. An appropriate sensor node is selected as the relay node for gathering and routing sensory data to sink node(s). When sensory data are collected at sink node(s), the event coverage is detected and represented as a weighted graph, where the vertices in this graph correspond to sensor nodes and the weight specified upon the edges reflects the extent of sensory data deviating from a normal sensing range. Event sources are determined, which correspond to the barycenters in this graph. The results of the experiments show that our technique is more energy efficient, especially when the network topology is relatively steady. View Full-Text
Keywords: event coverage detection; event sources determination; routing tree; weighted graph; underwater wireless sensor networks event coverage detection; event sources determination; routing tree; weighted graph; underwater wireless sensor networks
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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. (CC BY 4.0).

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MDPI and ACS Style

Zhou, Z.; Xing, R.; Duan, Y.; Zhu, Y.; Xiang, J. Event Coverage Detection and Event Source Determination in Underwater Wireless Sensor Networks. Sensors 2015, 15, 31620-31643.

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