Comarative Research On The Typicai Mainstream Of Building Automation System

With the development of computer technology, communication technology, electronic technology in the various buildings are more and more widely used, the intelligent building technology has been rapid development. All the time since, building automation system as an important part of Intelligent Building-always is the hot research field of intelligent building technology. This paper tries to systematically to the mainstream market, the typical application of building automation system to undertake comparative study, in order to promote our scientific development of intelligent building market.This paper describes the BACnet protocol and it’s application in intelligent building,, and gives LonWorks technology-based on building automation system.The relationship between BACnet and Lonworks is also discussed.The typical building automation system structure, using a communication protocol and network system, DDC, DDC control procedures, programming software and features of the Central Administration Workstation platform integrated management software and a typical application were analyzed and compared, and their regularity has been researched.This paper gives detailed expatiation and analysis of building control system system based on the BACnet,Research of an BACtalk building control management system Based on Microsoft Windows. And a detailed analysis based on TCP/IP standard building control system. Finally, A study on the economic comparison and design optimization of building control system.In short, BACnet technology, LonWorks technology and Ethernet technology is the intelligent building control system in the three most mainstream technology, has a high market share. They are in the present building control areas have their own unique advantages, BACnet technology, LonWorks technology has a long history and as a result of market competition due to a number of large companies and trade associations to support, the technology is more mature, the market is relatively stable; Ethernet technology applied to building control technology in the field of history is relatively short, but by virtue of the commercial Internet Success creates vast development space, make Ethernet become floor control system field parvenu, it is a new technology, low price, convenient and simple application to become a true sense of" transparent" network, realize the information from domain to domain of control net in the end, Ethernet in in the building automation system development application embodies this kind of mainstream development technology.