Study On Project Design And Device Choice Of Building Automation System

BA System (Building Automation System) is an important intelligentized subsystem of Intelligent Building, also known as the groundwork of intelligent integration. It is the integration of multi-subsystems , which aims at automatic device management, efficiently saves energy and reduces use-cost. What is outstanding out of all efforts for saving energy in modem Intelligent Building are both supervision and control of air-conditioner system. Now BA System comprises the basic components, here they are: central station, sub-station, spot meters, Control Network. According to survey, there are few stable BA Systems for long, without regard to amount of those existence. It results directly in massive equipments and related investment suspended. The thing is gone for little.BA System stems from the latest technological combination of computer, control and communication, still keep up with their going paces. Its architecture go throughes 3 stages: central control system, distributed control system and fieldbus control system, now running into network integration system. The Control Network technique (one of Industrial Control Network) surely plays the key role in BA System, which sets strict rules on reliability, real-time and stability. For the benefit of easily integration and communication, BA System moves gradually its Control Network in the way: inter-operation and open.Integration is the hot point of BA System technically; the standard and open of communication protocols are definitely the best way-out of integration. Lonworks technique and BACnet standard guide how and where the Control Network of BA System to keep going, one more noticed is industrial Ethernet technology. We certainly could utilize DDE, ODBC, OPC and other current techniques in Application Layer of the integration system.By far, lacking of criteria to highlight the technical indexes of BA System brings about some embarrassments, though some standards of performance have already been set up.The thesis illuminates functions and components of BA System thoroughly, gives further details of key technique—Control Network and System Integration, and predicts trend of this system. Based on the analysis mentioned along with my experience, the procedure, principles and key points of BA System design and device...