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This thesis is the development background and related technologies on the basis of the central air-conditioning system , and gradually the current situation of the management system of the central air-conditioning analysis , based the the BACnet / web services technology, central air conditioning energy management system CAC - IEnet , the system in real time monitoring central air conditioning system , temperature , humidity , pressure , flow , and other electrical parameters , and automatically take energy-saving strategies to manage the air-conditioning system , while managers can master the operation of the central air-conditioning systems as well as environmental conditions in real-time via a web service . The overall objective of this system is to build a scalable , good open system platform , the platform can realize the interconnection between the central air-conditioning equipment , interaction and information sharing , central air-conditioning , the exchange of information with the outside world . This paper first introduces the development status at home and abroad , the central air-conditioning system , combined with the characteristics of the BACnet describes the basic design principles of the system , and put forward specific development methods . Then , on the basis of all aspects of the requirements analysis system and data analysis , design the system frame structure , and major functional modules of the system to conduct a detailed analysis and design , described later based NET platform and SQL Server2005 technology system implementation process and implementation of the system is tested , the test shows that the system to achieve the design goal , basically meet the needs of the people , and to achieve energy-efficient management of air conditioning , central air-conditioning system , the introduction of the BACnet protocol design and developed based on the the BACnet central air conditioning system , not only has great practical significance , also has a broad market prospect .
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