Title: A two-stage data fusion model for wireless sensor networks

Authors: Yong Yin; Chaoyong Zhang; Yu Li

Addresses: Key Laboratory of Fiber Optic Sensing Technology and Information Processing, Ministry of Education, Wuhan University of Technology, Wuhan 430070, China ' The State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan 430074, China ' Scientific Technology Section, WuHan Textile University, Wuhan, 430073, China

Abstract: Wireless sensor networks (WSNs) are widely applied in many industrial and consumer fields, and data fusion arises as a critical discipline concerned with how data collected by sensors can be processed. However, existing research results on data fusion cannot achieve the optimal performance of the accuracy, the processing speed and the network life-span simultaneously. In this paper, a two-stage data fusion model is established. On the basis of this model, a fusion matrix is constructed to get rid of the redundant data so as to reduce the data fusion time at the first stage. Then strategies of BP neural network are adopted at the second stage to fuse data for more confident ones, which guarantees the fusion accuracy further. Simulations and experiments show that the performance of both the accuracy and real-time property is much improved.

Keywords: WSNs; wireless sensor networks; data fusion; fusion matrix; BP neural networks.

DOI: 10.1504/IJSNET.2014.063897

International Journal of Sensor Networks, 2014 Vol.15 No.3, pp.163 - 170

Received: 04 Feb 2014
Accepted: 11 Feb 2014
Published online: 24 Jul 2014 *

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