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Sensors 2014, 14(1), 95-116; doi:10.3390/s140100095

A Uniform Energy Consumption Algorithm for Wireless Sensor and Actuator Networks Based on Dynamic Polling Point Selection

1
School of Information Science and Engineering, Central South University, Changsha 410075, China
2
Department of Mechanical and Aerospace Engineering, University of Central Florida, Orlando, FL 32816, USA
*
Author to whom correspondence should be addressed.
Received: 25 October 2013 / Revised: 5 December 2013 / Accepted: 17 December 2013 / Published: 19 December 2013
(This article belongs to the Section Sensor Networks)
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Abstract

Recent research has indicated that using the mobility of the actuator in wireless sensor and actuator networks (WSANs) to achieve mobile data collection can greatly increase the sensor network lifetime. However, mobile data collection may result in unacceptable collection delays in the network if the path of the actuator is too long. Because real-time network applications require meeting data collection delay constraints, planning the path of the actuator is a very important issue to balance the prolongation of the network lifetime and the reduction of the data collection delay. In this paper, a multi-hop routing mobile data collection algorithm is proposed based on dynamic polling point selection with delay constraints to address this issue. The algorithm can actively update the selection of the actuator’s polling points according to the sensor nodes’ residual energies and their locations while also considering the collection delay constraint. It also dynamically constructs the multi-hop routing trees rooted by these polling points to balance the sensor node energy consumption and the extension of the network lifetime. The effectiveness of the algorithm is validated by simulation.
Keywords: wireless sensor and actor networks; mobile data collection; network lifetime; uniform energy consumption wireless sensor and actor networks; mobile data collection; network lifetime; uniform energy consumption
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Li, S.; Peng, J.; Liu, W.; Zhu, Z.; Lin, K.-C. A Uniform Energy Consumption Algorithm for Wireless Sensor and Actuator Networks Based on Dynamic Polling Point Selection. Sensors 2014, 14, 95-116.

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