【 Weak current College 】 airport scheduling data center building information weak electricity system design

1.1 cable tray and comprehensive pipeline system
1.1.1 design overview
Because of building multiple pipeline parallel cross, space is limited, especially production scheduling data center, the weak electricity system, information points, cable laying alongside floor grooves and wall inner tube, in the shaft and housing within the ceiling suspended ceiling in the widespread adoption of cable tray, provides the different trends of wiring, the weak electricity system of classification of the various cable in the cable tray cloth, the best routing and installation requirements according to the trend, combined with the architectural structure and air conditioning, electrical, etc., pipeline location to be determined in consultation, passive cable cannot be the active cable laying, side by side, subject to the conditions in the same tray placement, during which it must adopt the metal separators are located, lead cable to avoid passing through the intersection of the cable, wall or floor expansion joints should be marked in the building plan to leave the empty and location, to avoid missing until the construction of temporary drilling, may hurt and civil engineering structures. In order to prevent electromagnetic interference (EMC), the bridge's design, you should consider the cable tray sealing.

1.1.2 bridge structure
Cable tray ¡¡¡¡feeder, tray and ladder rack and other structures, from the bracket, bracket arm and installation accessories, etc. All parts of the bridge should be consistent with the series, universal, standardization of complete sets of requirements. Building bridges can be independently set up, you can also build up the various (structure) to build structures and pipe Gallery brackets, should reflect the simple structure, handsome in appearance, configuration flexibility and easy maintenance, etc., all parts are galvanized processing required, installed in the building of the bridge, made of open air must have antiseptic, resistance to moisture, good adhesion, high impact strength, resistance to physical characteristics.
In order to reduce the weight can also use aluminum cable tray and glass, its dimensions, load characteristics are similar with steel cable tray base. Due to aluminium, steel and the proportion is different (Al = 2.7, Fe = 7.86) by weight, aluminium steel ratio is 1: 3, according to two material market rate, the cost of construction cost aluminum Cable Tray than similar galvanized steel bridge price to 1.5 ~ 2.0 times, aluminum cable tray has a beautiful, light weight, easy installation, etc., in recent years, the aluminum cable tray is in the works.

1.1.3 bridge design issues to consider
1. cable tray load
Cable Tray load into loads, dynamic loads and the additional load. Static load is laying in the cable tray cable types, elements, each of the outer diameter of weight/unit length, different according to cable routing list statistics respectively. Dynamic loads is the Cable Tray Installation and maintenance of construction maintenance staff. For lightweight cable tray, generally not considered dynamic loads, that is not allowed on the bridge (line), if you need to consider the station, you should span appropriate shrink. Additional load only outdoor refers to ice and snow, wind and the electromagnetic force formed by loading it and installation site of the region's natural weather conditions and the nature of the charged body, the design should be based on various criteria.
2. Select tray steps
1) determine the cable tray width, layers and support of type and spacing, and cable in all levels of distribution of the cable tray.
2) calculation of per-layer cable uniform load (kN/m2), the preliminary determination bridge models, specifications.
3) press the biggest cable always uniform load value checking bridge strength. Checking type: q = q1 + q2
2 type: q1--cable of uniform load (the layer of uniform load in max) (kN/m2), uniform load is the pallet, ladder or cable Groove of loads;
2q2--consider cable laying or maintenance, the person's weight equivalent uniform load (kN/m2), the value of the calculation, the q2 of weight General press p = 90kg meter.
4) deflection. How to get the deflection, at present there is no clear provisions is evident in the burdens of area should consider reducing the wound, which means that the steel consumption will increase, therefore, calculated as long as the full use of the maximum permissible stress, and ensure adequate factor of safety, the maximum deflection and span (support spacing) ratio from 1/250 ~ 1/150.
3. grounding
According to the specifications of the relevant provisions, galvanized cable tray for good grounding.

1.1.4 bridge design and installation requirements
1, cable tray as a weak electrical engineering project, there is no special specifications for guidance, the manufacturer's specification model lacks the versatility, therefore, the selection process should be based on weak electricity systems and cable type, number, rational selection applies the cable tray.
1) determines the direction: according to the building floor plans, combined with the air conditioning plumbing and electrical pipes etc Setup, easy maintenance, as well as cable routing density to determine the best route cable tray. Indoors, as far as possible along the walls, columns, beams and floor mounted, Hui leverage chengzhan erection, it should be in the pipeline side or parallel mounted above, and cited the following line and branch line to avoid overlapping, if no other pipe support borrowing, since the establishment (branch) column.
2) calculation of load calculation: Cable Tray trunk sectional unit length of cable weight.
3) determine the width of tray: according to the number of laying cables, cable diameter and spacing of the cable to determine Cable Tray models, specifications, arm's length, the length and spacing of pillars, cable tray width and number of layers.
4) determine the installation mode: depending on the place of setting conditions determine the fixed method spans, select suspended, vertical, lateral wall type or hybrid, fittings and fasteners are generally the matching supply, in addition, under the bridge structure selected discount appropriate cover.
5) map out cable tray flat, profiles, local sites should also draw the space map, set out the materials table.
2, if combined with the power cable tray, power cable and power cable directly to the side of middle clapboard separated.
3, power cables, including cables and copper, if conditions permit, you can plug the cable, copper cable into the cable laying.

1.2 comprehensive wiring system
1.2.1 design overview
Production scheduling data center building cabling system includes support for building, property management, maintenance, routine Office may be required for the building itself cabling system, and is located in the building's functional Centre, various types of rooms, two types of wiring system cabling system should be relatively independent.
1.2.2 system structure
1.2.2.1 building comprehensive wiring system
Building cabling system from device subsystem, vertical link subsystem, management level subsystem between subsystems, and workspace subsystems.
1) device subsystem choose more often in at the lower levels.
2) backbone optical multimode fiber optic cable choice OM3, typically 8 or 12 cores should be considering the selection of 6 types of cables as a backup. 3 voice trunk use large logarithms cable.
3) management between general settings in the weak current shaft, management of floor General, for the layer under the management of space, information points, determine the appropriate management near the floor, but not exceeding this level and lower level is appropriate.
4) selection of horizontal cables category 6 UTP cables
5) workspace General matching double hole Panel, one voice, one of the data.
1.2.2.2 building features Center and a dedicated computer room cabling system

As the terminal premises distribution system, building features Center and a dedicated computer room cabling system needs and building wiring system connection.
1) from the terminal building room cited multiple root-mode optical fiber and cable outdoor large logarithms to production control center's main distribution center. Outdoor large logarithms cable is used for building intercom system.
2) will each professional room as a management company, which consists of integrated wiring Cabinet. From comprehensive wiring Cabinet to each column equipment cabinet column head Cabinet laying SM fiber cable and multimode fiber optic cable OM3. From the column head Cabinet to Cabinet in this column you can consider laying between single-mode and multimode fiber optic cable, OM3 so that future jumper work to be completed within the Cabinet.
3) on this computer room or functional centre can optionally install a 6 kind information point or fiber information point for engine maintenance Terminal, network management Terminal and seats.
4) for ease of use, professional system of distribution centers and building their own comprehensive wiring system between main wiring using multi-mode fiber-optic cable between connections.

1.3 network system and network security system
As production scheduling data center floor inside the system simpler, to simplify the network architecture using two-tier structure. Physically in order to ensure the reliability of the network, no single point of failure, the network topology used star redundant structure, all floors are connected by two Gigabit link binding interconnected, 2 g backbone bandwidth.
Production scheduling data center floor within the system network local relatively independent, isolated even through the firewall into the airport zone network to form a unified whole.

1.4 public broadcasting system
Production scheduling data center building located a broadcast system, mainly for emergency broadcast.
Radio host is located in the fire service duty, in the room, corridors, rooms, halls and public toilets and other public places set fire emergency radio speakers.

1.5 security monitoring system
Airport scheduling Center building is the airport communications center of information system, its security issues related to the normal operation of the airport. In production scheduling data centre CCTV surveillance systems and access control system, as the airport closed-circuit television monitoring system and access control system, compared to passenger terminal building of CCTV surveillance systems and access control system, and an airport building area of the same product.
In the design, monitoring and export to: building an object, each floor corridors, rooms, and other important places. Information centre of the room and the engine room control room, and other important door is controlled doors.
Located in the fire room, closed circuit television monitors, video equipment and control keyboard, access controller.
CCTV surveillance systems and access control system through the international terminal of security integration system can be linked.

1.6 cable TV system
An overall consideration for all airport, in a production scheduling data center set up at the airport of cable TV of front-end devices, systems of signal sources include: local cable television network signals, satellite television signal, the signal of airport self, in addition, the cable TV system and flight information display system settings interface, cable TV system, depending on the need to provide some airport flight information channels.
By scheduling a data center using fiber optic cables to the terminal building cited CATV system signals.
Production scheduling data centre Office set cable TV socket.

1.7 wired communications systems
Production scheduling data centers wired communications systems as unified communications platform modules installed in the floor, gateway over the IP network and terminal connections for IP-PABX data centers workers who provide telephone voice services.

1.8 wireless indoor coverage system
Data Center because of the large indoor and outdoor decoration, causing metal material of its internal wireless signal basic masked, lock out or depth attenuation, design and installation of a wireless signal indoor coverage system is essential.
System design including 138.175MHz airport paging system, 154/450MHz shift cluster system, 800MHz cluster system, 800MHzCDMA (code division multiple access), 900MHz simulation of cellular system (ETACS format), 900MHz digital cellular system (GSM) and 1800MHzDCS (digital communication system) system for indoor coverage of line.
The system consists of a set of main interface unit, remote unit, indoor antenna and several minutes power converters. The system has a modular structure, expand Microsoft. The main interface unit independent of the system, the signal integrated transmit signals through optical fibers to distribution in the building of the remote unit, the remote session will enlarge the letter through the output power is low, but in the indoor distribution relative intensive indoor antenna will signal transmitted out of the buildingEffective coverage of indoor space.

1.9 building automatic control system
In the data centre building automatic control system, on the building's air conditioning system, electricity system, lighting system, water supply and drainage systems, UPS systems, elevator and other centrally-controlled, reach regulation indoor environment, energy saving, extend equipment life.

1.10 clock system
As the airport Communications Center, clock system front-end devices located in the Centre of production scheduling data. Set up a central master clock to GPS receiver for time standard signal reception unit, receive the international standard time, computer control unit on the master clock for control and more, the master clock as a unified time airport signal source to the terminal building to provide baseline time signal and computer integrated systems equipped with interface to the computer network to provide standard time signal.
In production scheduling data center's information center rooms, control rooms set digital child clock.

1.11 internal communications system
In the production control center building located within the telephone system is a set, using and building area of the same product for building intercom system.

1.12 video conference system
In the data center installation video conferencing Terminal, and an airport building area of video conference system over an IP network connection, the video conferencing system.

1.13UPS and weak electricity distribution system
Production scheduling data center all main equipment room and other information-current room system devices using UPS electrical power distribution system, by building a unified power UPS. In each room, Interior distribution Cabinet power supply for each cabinet. Distribution Cabinet input uses two ways power supply, all the way to building all the way to commercial power UPS.

1.14 function centre
Production scheduling data center main function centre to the airport runs the command center and emergency command center.
Airport operations/emergency command center is daily airport operations command center, is responsible for overseeing the flight plan, coordinate operations and service sector partnership to address the treatment of airport operations in major problems for non-normal situations on the flight plan, the operational command center unified development and arrangement of contingency measures, and overseeing production and service sectors. At the same time to assist decision makers and public security, police, fire, ambulance and related departments complete the hijacking, aviation emergencies and other significant and unexpected events command processing.
Airport operations/emergency command Center architecture configuration including: emergency command center of the Hall, and the corresponding consultation room equipped room.
In the command center of the Hall, equipped with large-screen display, setting several staff seats, equipped with related information weak electricity system management Terminal, broadcasting system call station, intercom terminals, clock display, etc. Each seat configuration integrated wiring 6 information point and fiber information point.
In the emergency room, configure meeting consultation system, video conferencing Terminal, amplification system, video display systems, the clock display, intercom Terminal, radio paging stations, etc.

1.15 room integrated engineering (including functional Centre)
In production scheduling data center settings command center, central core network host room, computer room, departure node computer lab, testing laboratories, information monitoring center, Service Center and training center, and a subsidiary of power distribution equipment, UPS devices.
Central host room: airport information integration system with the central host devices, navigation and display system host devices, Enterprise OA system host devices.
Network core room: Airport Park network core switch device and the external network access equipment. Cable TV system front-end devices, clock system front-end devices are also located here.
Departure node computer room: airport departure system host devices.
Test laboratory: airport terminal within the information system simulation equipment, luggage system, parking systems, building control systems, simulation interface device.
Information monitoring center, Service Center and Training Center: information monitoring management workstation, etc.
The central host computer room and network core room, departure node computer lab, testing laboratories, UPS room environmental conditions in A-level computer room design, information monitoring center, Service Center and training center, and other environmental conditions in accordance with the B-class computer room design.