The composition of intelligent building Intelligent building usually consists of four basic elements: building automation system, office automation system, communication automation system and intelligent building integration system. (1) Building automation system BAS refers to the automatic control function that the building itself should have, including the automatic process of perception, judgment, decision-making, reaction and execution. It is mainly composed of four parts: environmental equipment monitoring system, energy equipment monitoring system, fire protection system (FAS) and security monitoring system (SAS). (2) Communication automation system The information communication system of CAS intelligent building is the basis to ensure the transmission of voice, data and images in the building. At the same time, it is connected with external communication networks (such as telephone public network, data network, computer network, satellite and radio and television network) to exchange information with all parts of the world. The communication network system includes fixed telephone communication system, voice service communication system, wireless communication system, satellite communication system, multimedia communication system, video service system and television communication system. It includes network structure, network hardware, network protocol, network operating system and network security. (III) Office Automation System The office automation system of OAS intelligent building can be divided into general office automation system and special office automation system. The integrated office automation system mainly serves and manages building property management and operation information as well as public affairs inside the building. General office automation system has the following functions: building property management and operation information, electronic accounting, e-mail, information release, information retrieval, guidance, electronic conference, word processing and document management. Special office automation system is mainly an office system in special business areas of professional office buildings (such as special business application systems in specific environments such as finance, foreign trade and government departments). The modes of office automation are divided into transactional office system, managerial office system and decision-making office system. Including word and document processing flow automation system, management information system, decision support system, property management system, professional management system (hotels, businesses, libraries, parking lots/garages, banks, securities, futures, etc. ), financial and electronic transfer POS system and equipment management system. (4) Integrated Wiring System (SCS) The integrated wiring system is a transmission network within or between buildings. It can connect the voice, data, graphics, images and multimedia communication equipment, information exchange equipment, building property management and building automation management equipment in the building with each other, and can also connect the communication network equipment in the building with the external communication network. The integrated wiring system connects all kinds of terminal equipment, and the whole building is dynamically monitored by computer in real time, realizing high intelligence. (5) The intelligent building integration system has the function of comprehensively managing all intelligent modules and various information in the system, collecting various information inside and outside the building, carrying out real-time processing and communication capabilities, and comprehensively managing various subsystems of the building. Intelligent building takes integrated wiring as the basic transmission medium, computer network as the main means of communication and control, and adopts a systematic method. Through comprehensive configuration and management, a comprehensive building environment with organic combination of equipment and network, hardware and software, control management and service provision is formed. It includes not only the physical building environment of equipment, but also the soft environment of management and service, which is a comprehensive building environment. As far as the service function of intelligent building is concerned, the security service function of intelligent building is provided by subsystems such as burglar alarm, access control, closed-circuit television monitoring, public security patrol management, elevator safety and operation control, perimeter prevention, fire alarm, fire fighting, emergency lighting and emergency call. The comfortable service function of intelligent building is provided by air conditioning and ventilation, heating, water supply and drainage, power supply, closed-circuit television, multimedia audio, smart card, parking lot management, sports and entertainment management and other subsystems; The convenient service function of intelligent building is provided by office automation, communication automation, computer network, structured integrated wiring, business service, catering service, hotel management and other systems. /browse.asp？ id= 1 1 1。 Type =7