The hottest lon2000 products are in BMS of Shangha

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Lon2000 products in Shanghai Communications Building BMS overall solution Fang case

with the healthy development of Chinese people's income and the development of urbanization, the process of urbanization in China is gradually accelerating. With the acceleration of urbanization, the intellectualization of high-rise buildings has become another new highlight in the field of automatic control. However, from the beginning of China's involvement in the building intelligence industry to now, nearly 80% of the domestic high-rise building intelligence projects use foreign monitoring configuration software as the upper platform. The digital display electronic universal experimental machine is suitable for users who only seek force value, tensile strength, compressive strength and other relevant data. There are two main reasons: first, foreign software (such as excel5000, WinCC, etc.) has a longer use time than domestic software, and its stability and function are better than domestic software; Second, foreign software has its own hardware integration products, and its software and hardware can be well combined. However, there is a risk of high investment in the intelligent engineering of buildings (generally accounting for about 5% of the civil engineering cost), so domestic software is rarely used in the intelligent engineering of high-rise buildings. But in fact, because the intelligent building system belongs to a lagging system, the control accuracy is not as high as that of process control. In terms of project cost, after reaching a consensus with the developers to build domestic intelligent building projects with domestic hardware, our company proposed the following solutions to the developers

the Shanghai Communications Building in this case analysis is located in the center of Shanghai, with a 28 story building height and a building area of 50000 square meters. There are 6-story podium buildings on both sides of the main building, and the main body of the building is a central symmetrical structure. Its traffic command center is located on the top floor, with offices on the 5th to 23rd floors, restaurants on the 4th floor, and a centralized business hall for certificate processing on the 1st to 3rd floors. The underground is divided into three layers; The first floor is the underground parking lot with 260 parking spaces, the second floor is the electromechanical equipment room, the third floor is the wartime air defense station, and it is the sundry storage room in peacetime

the sales volume of ultra-high molecular weight polyethylene fiber is 2200 tons. The main functions of the building:

● centralized management of the number of motor vehicles in the urban area

● carry out unified dispatching management on the road sections in case of major traffic failures and vehicle peak hours

I. system integration mode of transportation building

there is no unified conclusion on the integration of the whole intelligent building in China. At present, BMS system integration of large public buildings mainly adopts the following four modes:

1. System integration in contact mode, 2 Integration by serial communication, 3 The system integration is based on the building automation system ba, which can measure the shear modulus if equipped with a change meter and specify the non proportional change stress system. 4 System integration based on subsystem equality. The first integration method is the initial means of system integration, which is rarely used in BMS integration now; The second method is too slow in communication speed due to serial communication; The third integration method has great defects. BAS system is a relatively closed system, which lacks the ability to open up. The interface equipment and interface software with other subsystems are limited to specific products, so the system integration ability is limited, and the maintenance and upgrade costs are too high. The binding between bas and BMS is too tight. Once bas fails, BMS will also be paralyzed, lose its normal working ability, and cannot manage and monitor the subsystems that are still working normally

according to the user's requirements and the five principles of system integration, our company adopts the integration method based on subsystem equality

the whole transportation building can be integrated into a parallel two-tier structure according to the functional requirements put forward by users. The integrated business information management automation system is composed of an integrated communication platform composed of OA and CN of the transportation building, traffic information communication, alarm system, etc. (MAS); The building management system (BMS) based on building property management is composed of building management related systems such as Ba, FA, SA, etc. The integrated system is shown in the figure below. The five subsystems of OA and the six subsystems of CN are coordinated and managed by MAS, and the seven subsystems of Ba and the property management network are managed by BMS. Their databases can be interconnected according to permissions and needs

II. Wiring system of transportation building

the MAS system in the whole building adopts generic cabling system as the subsystem of transmission medium (super class 5 and class 6 hybrid cabling structure)

1. According to the analysis of user needs, the intelligent system of the transportation building mainly includes: power distribution equipment monitoring, electromechanical equipment monitoring, fire alarm, cable television, security automation, broadcast sound, information communication and computer network and other subsystems. Theoretically, generic cabling can support the signal transmission of the above subsystems, covering almost all weak current systems. However, in practical application, the backbone topology of the equipment monitoring system is generally the bus line, while the generic cabling is the star topology. If the generic cabling is used in the system, the length of twisted pair will be increased a lot; The cable TV system can transmit RF signals by using optical cables, but the system reliability will be reduced by adding adapters, and its investment is also more expensive than coaxial cables; If UTP is used for video signal transmission in closed-circuit television monitoring system, its shielding performance is worse than that of coaxial cable. If FTP is used, its price is higher than that of coaxial cable, and the power line should also be laid separately; The fire alarm system is mainly bus structure, which also has the above reasons. At present, the relevant specifications stipulate that the fire alarm line cannot be shared and laid with other lines, and it is not suitable to use generic cabling due to the management system; The output voltage of the broadcast sound system is 70 ~ 120V. If generic cabling is used, there will be cable overvoltage. This part of the system is not suitable for generic cabling. Therefore, the most suitable system for using generic cabling transmission medium is MAS (communication and computer network system)

2. Generic cabling design level generic cabling design level is divided into basic type, enhanced type and integrated type. In combination with users' needs for voice and data equipment, and considering the development in the next 10 to 15 years, the building adopts a comprehensive design grade, using a mixed group of optical cables and UTP

3. Design scheme of connecting equipment between horizontal work area and equipment

scheme 1: select super five categories of products, which can support the requirements of 100Mbps Ethernet and 1Gbps Ethernet, and support the needs of 550MHz broadband video transmission to the desktop, and provide convenience for future upgrading. Since the bottleneck of data transmission mainly lies in data sharing equipment and network switching equipment, the connection equipment between horizontal work areas and management rooms adopts more than five categories of products. In addition, a small number of information points with data display surface from optical fiber to table are set in each floor, which are mainly distributed in the comprehensive conference room, command center and network center

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