Sensors & Transducers Journal (ISSN 1726- 5479) |
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Vol. 151, No. 4, April 2013, pp. 95-100
A New Time Synchronization Algorithm for Wireless Sensor
Networks Based on Internet of Things1 Zhang Yong-Heng, 1,2 Zhang Feng1 School of Information Engineering, Yulin University, 719000, Yulin, China 2 School of automation, Northwestern Polytechnical University, Xi’an 710072, China 1 Tel.: +8613509121314, +8613891915616 1 E-mail: 709863637@qq.com, tfnew21@sina.com
Received: 4 April 2013 /Accepted: 18 April 2013 /Published: 30 April 2013 |
Abstract: To improve the time synchronization energy efficiency for wireless sensor networks and solve the problem of network overhead, reduce energy cost, analyzed existing time synchronization algorithm, ensure that one of the core technology for wireless sensor network performance. In this paper, according to the number of nodes in wireless sensor network increases, network overhead of the traditional reference broadcast synchronization algorithm for very large problems, proposed an energy efficient wireless sensor network reference broadcast time synchronization algorithm. Firstly, only non-adjacent two of the receiving node in the plurality of reference conditions of the broadcast message and the average phase deviation and phase deviation of the calculated maximum a posteriori estimation; followed by least squares linear regression method the periodic fit clock skew, the synchronization process is completed. The algorithm in synchronization accuracy achieved some improvements, at the same time, effectively reducing the energy consumption of the network.
Keywords: Time synchronization, Wireless sensor network, Internet of things, delay, Synchronization control
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