What is integrated wiring? What module systems are included in the weak current project?
The integrated wiring system is the channel of enterprise information operation, and its smoothness is very important. According to the actual needs of users, a cost-effective wiring system is designed.
Integrated Cabling System A telecommunications cabling system capable of supporting any user-selected voice, data, graphics and image applications. The system should be able to support the transmission of various information such as voice, graphics, images, data multimedia, security monitoring, sensing, etc., support various transmission carriers such as UTP, optical fiber, STP, coaxial cable, etc., and support the application of multi-user and multi-type products. Applications that support high-speed networks.
The integrated wiring system includes six subsystems:
Work area subsystem, horizontal branch trunk subsystem, management subsystem, vertical trunk subsystem, equipment subsystem and building group trunk subsystem.
Building Cluster Backbone Subsystem : Provides the connection point between the external building and the wiring inside the building. The EIA/TIA569 standard specifies the physical specifications of the network interface to realize the connection between buildings.
Equipment subsystem : The EIA/TIA569 standard specifies the equipment wiring between equipment. It is the main management area of the wiring system, and the data of all floors are transmitted here by cables or optical fiber cables. Usually, this system is installed in the computer room of the computer system, network system and program-controlled machine system.
Vertical Backbone Subsystem : It connects communication rooms, equipment rooms, and entrance equipment, including backbone cables, intermediate switching and main switching, mechanical terminations, and patch cords or plugs for trunk-to-trunk switching. The backbone wiring shall adopt a star topology, and the grounding shall comply with the requirements stipulated in EIA/TIA607.
Management subsystem : The management subsystem is composed of cross-connection and interconnection distribution frames. The management point provides the connection means for connecting other subsystems. Cross-connection and interconnection allow the positioning or relocation of communication lines to different parts of the building, so that communication lines can be more easily managed, allowing easy plugging and unplugging when moving end equipment.
The interconnecting distribution frame is divided into floor distribution frame (box) IDF and general distribution frame (box) MDF according to different connection hardware. IDF can be installed in the trunk wiring room of each floor, and MDF is generally installed in the equipment room.
Horizontal branch trunk subsystem : The horizontal subsystem is also called the distribution subsystem. The purpose is to realize the connection between the information socket and the management subsystem (jumper frame), to lead the user’s work area to the management subsystem, and to provide users with an information point outlet that conforms to international standards and meets the requirements of voice and high-speed data transmission. The subsystem starts from an information socket in the work area, and is composed of cables arranged horizontally to the inner distribution frame of the management area. The commonly used transmission medium in the system is 4 pairs of UTP (Unshielded Twisted Pair), which can support most modern communication equipment, and the cable should be flexibly selected according to the rate: when the rate is lower than 10Mbit/s, Category 4 or It is Category 5 twisted pair; when the rate is 10~100Mbit/s, generally use Category 5 or Category 6 twisted pair; when the rate is higher than 100Mbit/s, use optical fiber or Category 6 twisted pair. The wiring subsystem is required to be within 90m, which refers to the actual length from the wiring frame in the floor wiring room to the information point in the work area. Fiber optic cables can be used if certain broadband applications are required. The information outlet adopts the standard socket of ISDN 8-core (RJ-45), each information socket can be used flexibly, and the use can be changed at will according to the actual application requirements. The most common topology for a distribution subsystem is a star configuration, where each point in the system must be connected to the distribution frame that manages the subsystem by a separate cable.
Work area subsystem : the purpose is to realize the connection between the terminal equipment in the work area and the horizontal subsystem, which is composed of connecting cables connecting the terminal equipment to the information socket. Consists of information outlets, outlet boxes, connection jumpers and adapters. The design of the workspace subsystem mainly considers two aspects of the information socket and the adapter.
(1) Information socket: The information socket is the interface connecting the workstation and the wiring subsystem. The standard IO socket of the integrated wiring system is an 8-pin modular information socket. When installing the socket, the socket should be as close to the user as possible, and the location of the power supply should also be considered. According to the relevant electrical installation specifications, the height of the installation position of the information socket from the ground is 30~50cm
(2) Adapters: The selection of work area adapters should meet the following requirements: when different information sockets are used at the equipment connection, special cables or adapters can be used; when two services are performed on a single information socket, “Y” should be selected type adapter; the type of cable selected in the wiring subsystem is different from the type of cable required by the equipment, and also different from the type of cable required to connect the corresponding devices such as digital-to-analog conversion or data rate conversion of different signals, and the adapter should be used. ;According to the different telecom terminal equipment in the working area, the corresponding terminal matching device can be equipped.
Advantages of Integrated Cabling
Using the integrated wiring system, users can flexibly and conveniently realize the change and reorganization of the line according to the actual needs or changes of the office environment, and adjust the required network mode to fully meet the needs of the user’s business development;
The integrated wiring system adopts the structured star topology wiring method and standard interface, which greatly improves the reliability and manageability of the entire network, and greatly reduces the management and maintenance costs of the system;
The modular system design provides good system expansion capability and support for future application development, fully guarantees the user’s investment in wiring, and provides users with long-term benefits.
The integrated wiring system better solves many problems existing in the traditional wiring method, and provides an advanced and reliable solution with long-term benefits. With the rapid development of modern information technology, the integrated wiring system will become an indispensable infrastructure for modern intelligent buildings.
Transmission medium
There are two main types of cables used in integrated wiring – twisted pair copper cables and optical cables.
- Copper cable
(1) 50Ω coaxial cable, suitable for relatively large computer LAN.
(2) Unshielded twisted pair: divided into two categories: 100Ω and 150Ω. The 100Ω cable is divided into categories 3, 4, 5, and 6, and the 150Ω twisted pair cable has only one category of 5.
(3) The shielded twisted pair is the same as the unshielded twisted pair, except that a metal layer is added to the sheath.
- Optical cable
(1) 62.5mm graded enhanced multimode fiber
High optical coupling efficiency, less stringent fiber alignment, less management points and splice boxes; less sensitive to microbending losses, FDDI compliant.
(2) 8.3mm abrupt single-mode fiber is often used in buildings with a distance of more than 2000 meters.
Precautions
Based on years of experience in structured cabling and troubleshooting, Lanmeng has summed up a few points that need to be paid attention to when cabling. We need to pay attention to these when cabling, so as to ensure that we can enjoy the network more smoothly.
hardware compatible
In the selection of network equipment, try to make all network equipment use the products of one company, so as to minimize the incompatibility between high-end and low-end or even different equipment of the same level. And don’t choose network basic materials without quality assurance, such as jumpers, panels, network cables, etc., in order to save dozens of dollars. These things will be placed in the ceiling or wall when wiring, and it is difficult to solve the problem when it occurs. At the same time, even the products of big brands should be checked for quality with professional tools before installation.
properly terminated
When we complete the structured wiring work, we should take away the excess wires and equipment to prevent ordinary users from randomly connecting these wires. In addition, sometimes, users privately use a device such as a one-point-two-line head, which will also cause broadcast storms in the network. Therefore, it is necessary to follow a strict management system when wiring. Do not leave any components behind after wiring, because users are generally not familiar with the network, and when a problem occurs, they are likely to go to the doctor in a hurry, and they will use the redundant equipment casually, making the problem more serious.
antimagnetic
Why can electromagnetic equipment interfere with the transmission speed of the network? Because the network cable is an electrical signal, and a magnetic field will be generated near the high-power electrical appliances, and this magnetic field will act on the nearby network cable to generate a new electric field, which will naturally appear A condition where the signal is weakened or lost.
heat dissipation
In a high temperature environment, equipment always fails frequently. Why is this happening? Readers who have used computers know that when the CPU fan is not well cooled, the computer system often freezes or restarts automatically, especially for network equipment. The high-speed CPU and core components need to be in a suitable working environment. operation, too high a temperature can damage them. Equipment cooling is a must, especially for core equipment and servers, which need to be managed in a dedicated computer room, and also need to be equipped with cooling equipment such as air conditioners.
Connect cables according to specifications
There are many kinds of network cables, such as crossover cables, straight-through cables, etc. Different cables have different uses in different situations. If the confusion type is used arbitrarily, the network will be blocked. Therefore, special attention must be paid to distinguish the types of cables when structured cabling. The use of cables that do not meet the requirements will cause the problem of network failure. Wiring experience: Although many network devices currently support the DIP jumper function, that is to say, it can be used normally regardless of whether you connect the positive line or the reverse line. But sometimes the device does not have the DIP function, and only if you pay special attention to the type of wiring when connecting, can you avoid unnecessary failures.
Keep enough network access points
In many cases, the future upgradeability is not considered in the structured cabling process. The number of network interfaces is very limited, which is just enough for immediate use. If the residential layout changes in the future, the above problems will occur. Therefore, it is necessary to reserve twice as many network access points in advance in structured cabling.
On the basis of the integrated wiring system, various types of intelligent systems are integrated.
- telephone communication system
- computer LAN system
- Music/Broadcasting System
- CATV Signal Distribution System
- security monitoring system
- fire alarm system
- Access control system
- Parking lot fee management system
- Building Automation System
