Jiangsu Key Laboratory of Special Robot Technology College of Mechanical and Electrical Engineering Hohai University No.200.Jinling North Road Xinbei Changzhou 213022 China;
School of Mechanical Engineering Changzhou University No.1.Gehu Road Wujin Changzhou 213164 China;
School of Mathematics&Physics Changzhou University No.1.Gehu Road Wujin Changzhou 213164 China;
National Research Center for Rehabilitation Technical Aids Beijing Key Laboratory of Rehabilitation Technical Aids for Old-Age Disability Key Laboratory of Rehabilitation Technical Aids Technology and System of the Ministry of Civil Affairs No.1.Ronghuazhong Road Beijing BDA Beijing 100176 China.;
Jiangsu Key Laboratory of Special Robot Technology College of Mechanical and Electrical Engineering Hohai University No.200.Jinling North Road Xinbei Changzhou 213022 China;
Obstructive sleep apnea hypopnea syndrome; continuous positive airway pressure; ventilator mask; CO2 residual concentration; 3D numerical reconstruction.;