Funding for this research was provided by:
sichuan institute of technology research fund (2014KY01)
Enterprise informatization and Internet of things measurement and control technology sichuan university key laboratory (2014WYY04)
Department of Science and Technology of Sichuan Province (15ZC0195)
Education Department of Sichuan Province (17SB0345)
Article History
Received: 26 July 2018
Accepted: 8 November 2018
First Online: 6 December 2018
Competing interests
: The authors declare that they have no competing interests.
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