1. School of Building Services Science and Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, Shaanxi, China;
2. College of information and control engineering, Xi’an University of Architecture and Technology, Xi’an 710055, Shaanxi, China;
3. School of Architectural Design and Research Institute, Xi’an University of Architecture and Technology, Xi’an 710055, Shaanxi, China