1. School of Emergency Management Henan Polytechnic University Jiaozuo China
2. Engineer Shenzhen Zhaowei Electromechanical Co., Ltd Shenzhen China
3. School of Electrical Engineering and Automation Henan Polytechnic University Jiaozuo China
4. College of Electrical Engineering Zhengzhou University Zhengzhou China
5. Department of Electronics Engineering University of York York UK