Title: Lifetime enhancement in wireless sensor and actuator network using uniform energy consumption algorithm

Authors: Shuo Li; Jun Peng; Weirong Liu; Fu Jiang; Zhengfa Zhu; Kuo-Chi Lin

Addresses: School of Information Science and Engineering, Central South University, Changsha, Hunan 410075, China ' School of Information Science and Engineering, Central South University, Changsha, Hunan 410075, China ' School of Information Science and Engineering, Central South University, Changsha, Hunan 410075, China ' School of Information Science and Engineering, Central South University, Changsha, Hunan 410075, China ' School of Information Science and Engineering, Central South University, Changsha, Hunan 410075, China ' Department of Mechanical and Aerospace Engineering, University of Central Florida, Orlando, FL 32816, USA

Abstract: This paper studies the moving path planning problem of mobile actuator in delay-constrained wireless sensor and actuator networks. We consider a real-time scenario for mission-critical applications, where the data gathering must be performed within a specified latency constraint. To maximise the network lifetime subject to the delay constraint, we construct an energy-efficient shortest path tree in which the sensors' residual energy is taken into consideration. Then, based on the shortest path tree, we present a dynamic cost algorithm in which the sensor with more energy has higher possibility to be selected as polling point. Finally, the moving path of mobile actuator is determined by solving the travelling salesman problem including all the polling points. The effectiveness of our algorithm is validated by extensive simulations.

Keywords: WSANs; mobile data collection; network lifetime; balanced energy consumption; wireless sensor and actuator networks; WSNs; wireless sensor networks; path planning; mobile actuators; mission-critical applications; latency constraints; energy efficiency; travelling salesman problem; TSP; simulation.

DOI: 10.1504/IJES.2014.063821

International Journal of Embedded Systems, 2014 Vol.6 No.2/3, pp.233 - 239

Available online: 22 Jul 2014 *

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