Intelligent system of campus buildings based on LonWorks field bus

To enhance the level of intelligence of buildings and exert the open and ease of extension of the LonWorks field bus due to its integration of multi-I/O and network communication. An automatic control system based on LonWorks field bus for the campus building is developed. This system includes cold water unit subsystem, air conditioning subsystem, draining water subsystem, hot water boiler subsystem, electricity supply and distribution subsystem and the intelligent illumination subsystem, etc. The bus topological architecture based on Lon Works technology, and the newly open building integration and management discreteness EBI (Enterprise Building Integrator) from HONEYWELL Company are adopted to the system. The interfaces between EBI and electricity supply and distribution subsystem, the intelligent illumination as well as cold water unit are developed to realize common control and synthetic management of the data message.