1. China University of Mining and Technology, IOT Perception Mine Research Center, Xuzhou, People’s Republic of China + The National and Local Joint Engineering Laboratory of Internet Application Technology on Mine, Xuzhou, People’s Republic of China
2. The National and Local Joint Engineering Laboratory of Internet Application Technology on Mine, Xuzhou, People’s Republic of China
3. China University of Mining and Technology, Department of Mathematics and Mechanics, Xuzhou, China + University of Victoria, Department of Mathematics and Statistics, Victoria, British Columbia, Canada