1. The School of Biology and Medical Engineering, Beihang University, Beijing 100191, China
2. The School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China
3. The State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China
4. The Engineering Training Center, Beihang University, Beijing 100191, China
5. The Department of Respiratory Medicine, Beijing Chaoyang Hospital, Beijing 100020, China