中英文智能樓宇自動(dòng)化系統(tǒng)方案-閱讀頁
2025-05-11 05:03本頁面
【正文】 spersion, improved reliability,. The basic structure and function shown in Figure 3, the figure scene controllers, data acquisition station, engineer station, operator station, monitor and manage puter data munication through puter networks are organically bined to form the hierarchical distributed control system A distributed control system data munications network Data munication network is a pillar of the distributed control system. The structure of the distributed control system, which is a network structure, the control station, data acquisition station, engineers, operator stations, monitoring station is the puter on the network node, contain the CPU and network interface, they all have their own special network address (nodes), can send and receive data through the network, the network of each node in equal status, can share resources and interdependent, form a unified mand, and has the function of the dispersed risk, network architecture area is of great flexibility, scalability, can satisfy the distributed control system with the need to upgrade, the expansion is flexible and convenient(1) control network characteristics of distributed control system is different from the general puter network munication network, and general munication network, it is as follows: (1) have special requirements, high reliability and safety requirements of information transmission, therefore absolutely accurate, reliable and often USES redundant technology, backup and diagnosis function. Such as: control station adopt double CPU boards, double I / 0 plate, etc. 2 good performance. 3 strong adaptability to environment. (2) network topology construction equipment automation systems monly used have bus network and ring network, in two kinds of structure of two nodes can be directly through the network munication, each node in equal status(3) network munication protocol ponent architecture equipment automation system, there must be a kind of everybody can accept and abide by the working language to realize mutual dialogue, this is the data munication protocol standards. Used for building automation control network BACnet agreement by the physical layer, data link layer and network layer and network ponents, or the equivalent of open systems interconnection reference model (OSI) first, second, third, seven layer protocol Among them: ARCnet for token bus network, data transfer rate of , have a good time. MS/TP is a main/transmission from the data link layer technique, allows the use of EIA 485 hardware. BACnet achieve different manufacturer of automatic control system of munication between technology, ., from a island to another island relationship between the technology5 Conclusions building automation control technology in China is still an emerging technology, with the emergence of more intelligent building, there will be more advanced technology to add to this area, so the technology is more mature and improve寧可累死在路上，也不能閑死在家里！寧可去碰壁，也不能面壁。什么是奮斗？奮斗就是每天很難，可一年一年卻越來越容易。能干的人，不在情緒上計(jì)較，只在做事上認(rèn)真；無能的人！不在做事上認(rèn)真，只在情緒上計(jì)
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