Shixing Li
Laboratory of Networked Control Systems, Shenyang Institute of Automation Chinese Academy of Sciences, Shenyang, 110016, China
Hong Wang
Laboratory of Networked Control Systems, Shenyang Institute of Automation Chinese Academy of Sciences, Shenyang, 110016, China
Aidong Xu
Laboratory of Networked Control Systems, Shenyang Institute of Automation Chinese Academy of Sciences, Shenyang, 110016, China
Seung Ho Hong
epartment of Electronic Systems Engineering, Hanyang University, Ansan-Si, Korea
ABSTRACT
WirelessHART is becoming widely used industrial communication standard due to its features such as low cost, low power consumption and strong interoperability. As a research hotspot, time-sync is one of key technologies for WirelessHART networks. Firstly this study summarizes the existing time-sync methods. Secondly, by means of building slot timing model, this study focuses on time slot setting up, active time-sync and passive time-sync processes for WirelessHART network time-sync. The calculation method of time cycle for keep-alive data packets used for keeping time-sync is proposed. The keep-alive data packet cycle of 30 sec is proved reasonable in WirelessHART standard. Finally, test platform is set up using the self-development WirelessHART communication module WH-M and the time-sync mechanism of WirelessHART network is realized. The time-sync error of testing data is small enough to meet the time demand of TDMA in industrial communication fully.
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How to cite this article
Shixing Li, Hong Wang, Aidong Xu and Seung Ho Hong, 2013. Study of Time-sync for WirelessHART Networks. Information Technology Journal, 12: 7809-7814.
DOI: 10.3923/itj.2013.7809.7814
URL: https://scialert.net/abstract/?doi=itj.2013.7809.7814
DOI: 10.3923/itj.2013.7809.7814
URL: https://scialert.net/abstract/?doi=itj.2013.7809.7814
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