A two-tier strategy for priority based critical event surveillance with wireless multimedia sensors

Surveillance plays a vital role in protecting infrastructure facilities of a country and improving detection of cross-border activities. Compared to traditional surveillance systems, wireless multimedia sensor networks (WMSN) provide distinct advantages. In this paper we consider the problem of crit...

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Bibliographic Details
Published in:Wireless networks Vol. 22; no. 1; pp. 267 - 284
Main Authors: Bhatt, Ravindara, Datta, Raja
Format: Journal Article
Language:English
Published: New York Springer US 01.01.2016
Springer Nature B.V
Subjects:
Analysis
Communications Engineering
Computer Communication Networks
Connectivity
Cost engineering
Efficiency
Electrical Engineering
Energy consumption
Energy efficiency
Engineering
Infrastructure
IT in Business
Linear programming
Multimedia
Multimedia communications
Networks
Priorities
Reduction
Scheduling
Sensors
Strategy
Studies
Surveillance
Wireless networks
Wireless multimedia sensor network (WMSN)
Deployment
Surveillance
Energy-efficient scheduling
ISSN:1022-0038, 1572-8196
Online Access:Get full text
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Summary:Surveillance plays a vital role in protecting infrastructure facilities of a country and improving detection of cross-border activities. Compared to traditional surveillance systems, wireless multimedia sensor networks (WMSN) provide distinct advantages. In this paper we consider the problem of critical event surveillance in a region of interest with the help of WMSN. The challenge here is deployment cost, energy-efficient routing and preservation of coverage and connectivity of the network. To keep the deployment cost minimum, we propose a two-tier strategy consisting of (a) densely deployed low cost audio tier nodes and (b) sparsely placed high cost video tier nodes to monitor critical events occurring in a given area. The audio nodes perform the preliminary event detection task, whereas, the base station activates the rotatable-video nodes on a demand basis. Depending upon the cost of potential damage, an event is assigned a priority, and based upon that priority an event is assigned either energy efficient or a delay tolerant path along the audio and video tiers. We also propose two integer linear programming formulations MEAT and MEVT for minimization of energy consumption in audio and video tiers separately. We then present two approaches, namely Greedy and DCSEG, and compare them with a popular existing approach under various scenarios. Simulation results show considerable reduction in the number of active audio and video sensor nodes per event which leads to low deployment cost and reduction of average energy consumption in the network.
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ISSN:1022-0038
1572-8196
DOI:10.1007/s11276-015-0971-7