1. School of Information Science and Engineering, Hebei North University, Zhangjiakou 075000, China
2. College of Lab Medicine, Hebei North University, Zhangjiakou 075000, China
3. School of Physical Science and Technology, Southwest Jiaotong University, Chengdu, Sichuan 610031, China
4. School of Physics and Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China