楼宇智能化技术网络技术现状及发展趋势

楼宇智能化技术网络技术现状及发展趋势内容摘要：

ew. Distributed puter control system (DCCS), also known as distributed puter control system, called Distributed Control System (DCS). Distributed Control System, in essence, is using puter technology to the production process to focus on monitoring, operation, management and decentralized control of a new control technology. A threestructure model, that is, control (engineers Station), operation (Operation points), field instrumentation (meters Station). DCS by puter technology, signal processing technology, measurement and control technology, work munications technology and humanputer interface technology and mutual development and the infiltration. In the building automation system, a typical product of the S600A POGEE Siemens Building Automation System, it is from the central station, all kinds of DDC controllers and various types of sensors, implementation bodies, to plete a variety of control and management functions . The traditional DCS system the problems are: (1) of its I / O signals using the 9 traditional analog signal, so it can not stand in DCS engineers onsite instrumentation (such as the transmitter, implementation, etc.) for remote diagnosis, Maintenance and configuration, (2) As the selfproduct manufacturers, a relatively closed system, the exchange of products of poor, the system expansion difficult. fieldbus technology in the building automation system and the application of research Fieldbus control system FCS (Fieldbus Control System) is used for field instrument and control system between the control room and a fully distributed, alldigital, intelligent, bidirectional, multivariable, multipoint, multistation munication system. Fieldbus control system with the technical characteristics are: (1) open system, open munication protocol, the manufacturers of equipment for interconnection between the system and to achieve exchange of information. (2) interoperability and interoperability of different manufacturers can achieve similar products exchange. (3) equipment at the scene of the intelligent and functional autonomy, that is, the equipment itself can be done at the basic functions of automatic control and diagnostic equipment at any time the running. (4) highly decentralized structure, fundamentally change the DCS bination of concentrated and dispersed distribution system framework to improve the reliability and adaptability of the environment on the spot. DCS system to overe the shortage of building automation system to introduce a field bus technology, at present, monly used in building automation systems are monly used fieldbus LonWorks fieldbus, EIB, such as fieldbus. Building automation system for the launch characteristics of the building automation work munication protocol BACent the application is also very popular. LonWorks Fieldbus LonWorks Field Bus is the building automation system in the application of more fieldbus technology. It is Wchelom panies in the United States in 1991 launched the EON (Local OperrationgNetworks) technology, also known as Lonworks technology. LonTalk work protocols and neurons LonWorks chip is the core technology. At present, a variety of building automation control systems are in support of LonWorks technology, such as Huo Ni Wei Seoul39。 s EBI system, the Siemens APOGEE system, Johnson39。 s METASYS system. LonWorks technology they need is the shortings of neurons chip temperature range is narrow and plicated to operate, more expensive. 10 EIB Fieldbus EIB is the European Installation Bus (European Installation Bus) acronym. It was proposed in 1990, after 10 years of development, bee the most influential European fieldbus intelligent building standards in Europe, has been into the 300 manufacturers for their support. It is mainly through the power cable transmissio n signals, to avoid a repeat of the wiring many troubles, such as ABB ibus EIB system. Intelligent buildings in the country in the EIB technology has been widely used. other Fieldbus CAN (Controller Area Network) that the controller local area work, mainly used for detection and control of the process . In the early 1980s by the German pany BOSCH a serial munication protocol. Has now bee the international standard, in the industrial process has been widely used. In the building automatio n system has also been applied, such as the S2020 Building Automation System. CAN bus is characterized by: the development of lowcost, technology pared with other fieldbus simple, but the bus hung the contact is too small, can not satisfy the requirements of building systems. Profibus fieldbus, it is the only fully integrated process and factory automation of field bus solutions, which is not dependent on manufacturers of openfield bus standards, in the smart buildings have been applied, the existence of the problem With the high level of widearea work connections is more plicated and therefore application is limited. building automation work munication protocol BACent As all countries and all major panies to protect their own interests, for a long time fieldbus standards are not uniform. Building automation control system is also facing a similar situation, a huge buildi。