Analysis of topological structure and developing trends of building automation systems

There are more than ten famous brands of foreign building automation (BA) systems in China’s market. The topological structure of BA systems can be classified into four categories—connecting the site layer and the management layer with gateways or network controllers, connecting the management layer with direct digital controllers via TCP/IP and the complex formed by every two categories of the above. Analyses their topological structure based on some specific brands. Presents the three major developing trends of BA systems, i.e., the achievement in industrial control domain being applied to refinement of traditional BA control strategy, the achievement in communication domain to BA system domain and the achievement in IT domain to BA system domain. Considers that the tendency of mechanotronics of air conditioning subsystem may damage BA’s overall situation and integrity.