How to make the integrated wiring system more reasonable?

The integrated wiring system is a wiring system specially designed to meet the development needs. For modern buildings, it is like the nerves in the body. It uses a series of high-quality standard materials and a modular combination to integrate voice, data, image and some control signal systems with a unified transmission medium. After unified planning and design, it is integrated into a standard wiring system, organically connecting the three subsystems of modern buildings, providing a physical medium for the system integration of modern buildings. It can be said that the success of the structured wiring system is directly related to the success or failure of modern buildings. It is crucial to choose a high-quality integrated wiring system.

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1. The integrated wiring system can be divided into 6 independent systems (modules):

1. Workspace subsystem

The workspace subsystem is composed of the equipment between the terminal equipment and the information socket, including: information socket, socket box, connection jumper and adapter.

2. Horizontal zone subsystem

The horizontal area subsystem should consist of information sockets for the work area, horizontal cables from floor distribution line equipment to information sockets, floor distribution equipment and jumpers. Generally, four pairs of twisted-pair cables should be used for horizontal cables. In situations where the horizontal subsystem has high-speed applications, optical cables should be used, that is, optical fiber to the desktop. According to the requirements of the entire integrated wiring system, the horizontal subsystem should be connected on the wiring equipment of the secondary handover room, handover room or equipment room to form telephone, data, television system and monitoring system, and can be managed conveniently.

3. Management subsystem

The management subsystem is set up in the room of the floor distribution line equipment. The management room subsystem should be composed of the wiring equipment, input/output equipment, etc. in the handover room, and can also be applied to the equipment room subsystem. The management subsystem should adopt single-point management and double handover. The structure of the handover field depends on the work area, the scale of the integrated wiring system and the selected hardware. When the management scale is large and complex and there is a secondary handover room, double-point management and double handover are set up. At the management point, each terminal field should be marked with a marking insertion strip according to the application environment.

4. Vertical trunk subsystem

The main equipment room (such as computer room, program-controlled switch room) usually provides the most important copper or optical fiber trunk lines in the building, which is the information transportation hub of the entire building. Generally, it provides multiple connection paths between equipment rooms and wiring frames on different floors, and can also connect large areas of a single-story building.

5. Equipment room subsystem

The equipment room is a place where incoming line equipment is installed at appropriate locations in each building, where network management is carried out and where management personnel are on duty. The equipment room subsystem should consist of the building incoming line equipment of the integrated wiring system, various host equipment such as telephone, data, computer and its security wiring equipment.

6. Building complex subsystem

The building complex subsystem extends the cables of one building to the communication equipment and facilities of other buildings in the building complex. It includes copper wires, optical fibers, and protection devices to prevent surge voltages from cables in other buildings from entering the building.

2. Integrated wiring system

1. Horizontal subsystem, cable usage calculation method:

• Average cable length = (horizontal distance of the farthest information point + horizontal distance of the nearest information point)/2 + 2H (H-floor height) Actual average cable length = average cable length × 1.1 + (termination tolerance, usually 6)
• Number of cables per box = length of cables per box / average length of actual cables
• Number of cable boxes required = total number of information points / number of cables per box

Note: The horizontal distance between the farthest and nearest information points is the actual horizontal distance from the floor wiring room (IDF) to the information point, including the actual horizontal route distance. If an IDF is set up on multiple floors, it should also include the corresponding floor height. The above "average cable length" calculation formula is suitable for the situation where a floor wiring room (IDF) is set up on the first or third floor.

2. Calculation method for copper cable usage in the trunk subsystem:

• Average cable length = (farthest IDF distance + closest IDF distance)/2
• Actual average cable length = average cable length × 1.1 + (termination tolerance, usually 6)
• Number of cables per axis = length of cable per axis / average length of actual cable
• The number of cable reels required = the total number of IDFs / the number of cables per box

Note: The farthest and nearest IDF distances are the actual distances from the floor distribution room (IDF) to the main distribution frame (MDF) in the network center, which mainly depends on the floor height and the horizontal distance from the weak current well to the equipment room (MDF).

The number of pairs of large-pair cables is calculated as 1:2 (i.e., 2 pairs of twisted pairs are configured for 1 voice point), and 25/50 pairs of cables are selected for reasonable design. 100-pair large-pair cables are generally not selected because they are difficult to construct.

3. Calculation method of optical cable usage for backbone subsystem:

• Average cable length = (farthest IDF distance + closest IDF distance)/2
• Actual average length of optical cable = average length of optical cable × 1.1 + (termination tolerance, usually 6)
• Total amount of optical cables required = total number of IDFs × average length of actual optical cables

Note: The farthest and nearest IDF distances are the actual distances from the floor distribution room (IDF) to the main distribution frame (MDF) in the network center, which mainly depends on the floor height and the horizontal distance from the weak current well to the MDF.

If the bidding documents have clear requirements for the number of optical fiber cores, single-mode, and multi-mode, the design will be based on the requirements. The common choice is 6-core multi-mode optical cable.