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JACIII Vol.19 No.2 pp. 191-196
doi: 10.20965/jaciii.2015.p0191
(2015)

Paper:

Distributed Cooperation Based Priority Coverage Control Strategy for Mobile Sensors

Zhi Zheng*,** and Zhihong Peng*

*School of Automation, Beijing Institute of Technology
No. 5 South Street, Zhong Guan Cun, Haidian District, Beijing 100081, China
**School of Mathematics and Computer Science, Fujian Normal University
Fuzhou 350108, China

Received:
July 1, 2014
Accepted:
November 13, 2014
Online released:
March 20, 2015
Published:
March 20, 2015
Keywords:
mobile sensor, sensing constraints, priority coverage, distributed cooperation, key areas
Abstract

Random deployment and inadequate numbers of sensor nodes may cause low coverage, so we propose a new priority coverage control strategy based on the distributed cooperation of mobile sensors. Sensor nodes are distributed randomly around the region of interest (ROI) and searched for independently. When nodes are found, an unbreakable group is formed under repulsion, attraction and speed consistency control, then searching is begun cooperatively. When some node finds a ROI, it guides the other nodes in the group following it to the ROI. While in the ROI, nodes choose the most important position within the sensing range, then move toward it independently while avoiding collision, eventually, reaching the most important area of the ROI. Under the premise of satisfying key area coverage, sensor nodes are adjusted based on the degree of coverage, maximizing coverage. Simulation results show that the proposed method quickly improves the coverage rate and achieves priority coverage of key areas strongly robustly without being adversely affected by sudden damage to nodes. Applications include coverage with limited amounts of nodes in unknown environments.

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Last updated on May. 24, 2017