The routing of network connection: Comprehensive wiring system construction main point and experience
Should know before starting building
Usually the network routing system that we speak can be divided into routing of telephone line, comprehensive wiring and three big classes of Ethernet routing, they differentiate suitable different environmental situations, users should have a fundamental understanding on they before starting building.
The traditional telephone line routing system is called too " The user line project " ,Because this system is used mainly for transmitting the speech signal and intelligence signal of the narrowband, generally adopt a pair of copper wires to realize and transmit at a long distance, the distance can reach 3- 5 kilometers. This kind can lay the big logarithm copper cable from the computer lab of one block of districts to the community to route, a community sets up several tapping points according to the magnitude, sets up and mixes the line box from tapping point to unit of the floor, when if there are user's newspapers to install a telephone, go between to register one's residence directly from mixing the line box, it is simple that this kind of project of routing has construction, do not have high expectations for construction craft, all right transmissive characteristic of long distance.
The routing of intelligent building is also called comprehensive wiring, it pass comprehensive wiring system the office automated system by one System Integration Center, security protection such as communication automated system and electricity, fire control, security personnel, illumination, air conditioner control the automated system to combine together, purpose to achieve information-based management. This kind of project of routing is generally implemented in one or several office buildings, diversification of information point, unit area information point are intensive (2 information point / 10 square meters) , the critical characteristic of transmitting the bandwidth.
Community's Ethernet routing adopts the star structure, pass " Optic fibre five kinds of lines " Way,it is at several blocks generally or implement dozens of residential building, be offered by broadband interfaces high-speed to user. Community's Ethernet routing has transmission distance between five kinds of lines short (100 meters) , characteristic of expecting much in construction craft etc., compared with comprehensive wiring, community's Ethernet routing information point is single, there are less information points of the unit area, the circuit environment is bad, but the access technology of Ethernet is very ripe, canonicalization, the low cost of the average port, the bandwidth is high, the apparatus low cost of user, it is the present focus of routing.
Preparation of routing and step experience
Usually the network project is through surveying and studying, after confirming the scheme, it is the implementation of the project next, first step of preparation before going into operation that and the project implements: Unless design by construction drawing on comprehensive wiring reality, position collinear trend of cloth,it need it consider for example: Disguise, destroy the BLDG (the structural features of the building) ,Utilizing the existing space to avoid power circuit and other circuits, the essential and valid protection demand for cable,etc. under the on-the-spot situation at the same time, work capacity and feasibility of constructing (for instance, make wall eyes etc.) Wait a moment, then offer this drawing to constructors, supervise and guide personnel and use of Personnel In charge;
And the budget that then the planning and design, confirm the route is applied for and sanctioned according to the above-mentioned situation, need to apply to the administrative department if needing to hit wall eyes on the machine supporting beam, otherwise violate construction regulation,etc., the whole planning and destruction level prove that is preferably approved by Party A and administrative department; Secondly revise and plan. On the formal planning foundation that permits the procedure finally, calculate materials and recruitment, expense budget speech and time limit and construction scheme of administrative operation,etc. considering designing while implementing synthetically and arranging. Need to consider user's square cooperation intensity in the embodiment. The embodiment needs to consult with user's side to approve that sign, and appoint to coordinate a responsible person and appoint project director and project supervision personnel, responsible for, plan, get the material ready, prepare against worker, user side cooperate with the respect matters of demanding etc., propose the time table that every department cooperates, coordinate and construct and organize and manage the on-the-spot construction site and authorize testing when responsible for, make test report and make routing mark system.
That need reminding is to need a lot of construction materials in the construction course of the network, these material some must get the material ready before operation, some can get the material ready in the course of going into operation, mainly optical cable, paired line, socket, information module, server, stabilized voltage supply, line concentrator,etc. implement and order goods in the manufacturer, and confirm the date of picking up goods, plastic cleat, PVC of different specifications fire prevention routing materials such as the tube, Periostracum Serpentis tube, self-tapping screw,etc. take one's place, if the line concentrator is the central current supply, get the wire, iron pipe ready and make the good electric equipment safety measure (power supply line must go on according to the civil architecture standard specification) ,Make the construction schedule (should leave the appropriate leeway, the unexpected thing in the construction course, may happen at any time, and demand to coordinate immediately) .
Question which should be paid attention to while constructing in routing
Because network the intersection of comprehensive wiring and project implement, design collinear to play a decisive role in the whole course to cloth, the design institute that the project implements should be double cautious. Say, should pay attention to according with and normalizing the standard at first while designing on the whole. Not only the collinear implementation of cloth of structuring is designed to not merely accomplish the design rigorously, but also meet user's instructions for use, also make its fabrication cost reasonable, accord with and normalize the standard. World and China have rigorous regulation on routing of structuring and a series of to normalize the standard, these standards have done the clear definition to each link of the structured cabling system, have stipulated its designing requirement and technical indicator;
Secondly show and design according to the actual conditions. The BLDG that should be implemented to the project first is fully investigated, collect the architectural engineering, equipment project and other drawing materials about project of this BLDG, consider the intersection of construction investment and budget of user require, employ demand and the intersection of construction speed and the intersection of person who require and factors of various fields fully. If the BLDG still confirms the routing scheme of structuring in preparing to establish, can put forward the particular requirement about routing of structuring to design institute of the building according to the whole overall arrangement, the collinear demand leaves of the building, in order to finish some the intersection of cloth and collinear front-end engineering while construction. If synchronize with interior decoration project the project of routing implemented on the basis of original BLDG, must and reconnoitre the result and design routing actually according to the situation of the original BLDG, equipment engineering;
Should pay attention to selecting suitable materials and overall arrangement finally. Routing is implemented materials of selecting suitable materials in the design and arrange and have direct influence on construction cost. In design, should according to the intersection of networking and demand of organization, choose suitable to route cable and connector while being typological, select routing the intersection of material and grade with exert a tremendous influence to overall the intersection of scheme and technical indicator. Propose using the serial auxiliary products of a manufacturer in routing, because routing is a system, but not the simple associations of cable and component. The design that is arranged is besides having direct influence on construction cost, still concern whether the routing of network is rational, to a multi-storey building, install the network computer lab of information center of the whole BLDG network backbone switchboard, preferably set up the floor of middle part in the BLDG, if each floor sets up and mixes the space, set up intermediate section in floor preferably, design, can try hard, shorten vertical like this and the intersection of level and main the intersection of Pyrolusitum and system route length, save materials, lower costs and can also reduce the transmission distance of needless signal channel, improvement of favorable communication quality.
Come, say, need notice have construction site supervise and guide personnel take serious from detail, handle various situations appearing in the construction process in time, coordinate and deal with every opinion; If construct and meet the unpredictable question live, should report to the engineering unit in time, and propose the solution is for the engineering unit to research and solve on the spot, so as not to influence job schedule; To the question not well planned of engineering unit, should solve properly in time; Reflect in the construction drawing the point that the engineering unit increases newly in time; Inspect for acceptance stage to some fields or sections in time, guarantee engineering quality; Preferably make the project program out, but while making the project program, should allow some leeway, influence that may bring to this project while also considering other construction, avoid the question that can't be completed, handed over on time, so, propose using and supervising and guiding and appointing the task table, table of constructing of the shop.
At the end of construction, should also pay attention to clearing up the scene, keep the scene clean, esthetic; Need to mend junctions such as wall the hole, vertical shaft,etc.; Various surplus materials are gathered, and concentrate surplus materials to put a place and and register its workable quantity; And do well and summarize materials: Operation report; Routing schedule drawing; Course report of construction; Test report; Acceptance report that operation report and acceptance of work are required.
Routing experience five question and answer
1.Why you had better not are there piecings if braiding is intraductal? In what placement is connected?
It is not usually in the intraductal connecting wire of braiding, when the wire length is not enough to need to connect, joint of wire can't intraductal in braiding, should in switch, socket, the intersection of lamp holder and the intersection of box,etc. and interstar connection under terminal box, otherwise easy to cause intraductal to stop up, dispel the heat bad, it is difficult for fault point not to find out, it is difficult to maintain, and may initiate the electric fire.
2.Why forbid using the portable bed lamp?
The portable bedside light button is that * soft insulated conductors are connected with switch, the wire separates with the switch in use, the current carrying end of a thread may cause the fire or accident of getting an electric shock while exposing.
3.Why necessary tandem connection is the light switch on the phase line?
, at zero line, though electric light does not either on disconnect, the intersection of light switch and tandem connection, but the phase line of the lamp holder remained and put through, but people thought the light was bright will think improperly the light was in deenergization state. And the voltage to earth of each point is still dangerous voltage of 220 volt on the lamps and lanterns in fact, if people touch these in the current carrying position in fact when the light is put out, will cause the accident of getting an electric shock, so various light switches or single-phase small capacity uses the switch of the electrical equipment, only tandem connection could guarantee safely on the phase line.
4.After finishing fitting up, what respects question electricity should pay attention to to confirm?
All switches in the circuit want the power from various places of normal control, all sockets want the energization experiment, a right looks of left, it is not smaller than 30 centimeters that the distance of electric socket of power should be the lowest.
5.Must the pre-buried light current pay attention to those items?
Takes one set of PVC inflaming retarding tubes at the time of routing, and harsh and unreasonable and flat and vertical, meeting turning round will use the bend; The light current seldom leaves in the ground; Minimum distance is 300MM that heavy current and unjust trough two of light current burn; Line of stereo and wide belt line can't be connected, the network thread of telephone line should use the specialized piecing or splitter; After waiting for the light current to assign well, need to measure the experiment, the light current is unblocked after guaranteeing the seal groove.
