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Sensors 2009, 9(4), 2446-2460; doi:10.3390/s90402446
Article

Energy-efficient Area Coverage by Sensors with Adjustable Ranges

1
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1
,
2
 and
3,*
Received: 19 January 2009 / Revised: 30 March 2009 / Accepted: 6 April 2009 / Published: 8 April 2009
(This article belongs to the Section Physical Sensors)
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Abstract

In wireless sensor networks, density control is an important technique for prolonging a network's lifetime. To reduce the overall energy consumption, it is desirable to minimize the overlapping sensing area of the sensor nodes. In this paper, we study the problem of energy-efficient area coverage by the regular placement of sensors with adjustable sensing and communication ranges. We suggest a more accurate method to estimate efficiency than those currently used for coverage by sensors with adjustable ranges, and propose new density control models that considerably improve coverage using sensors with two sensing ranges. Calculations and extensive simulation show that the new models outperform existing ones in terms of various performance metrics.
Keywords: Coverage; deployment; energy efficiency; wireless sensor networks; simulation Coverage; deployment; energy efficiency; wireless sensor networks; simulation
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.

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Zalyubovskiy, V.; Erzin, A.; Astrakov, S.; Choo, H. Energy-efficient Area Coverage by Sensors with Adjustable Ranges. Sensors 2009, 9, 2446-2460.

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