The weak current construction of the machine room mainly includes the power supply of the machine room, the floor of the machine room, the wall materials and ceiling of the machine room, the access control system of the machine room, the weak current lightning protection and grounding of the machine room, and the fire-fighting equipment. Let's take a look at the weak current construction solution of the machine room.

1、 Machine room power supply
Three way high voltage power supply
For the computer center room, in order to ensure the continuous operation of the computer and give full play to the role of UPS, three-way high-voltage primary power supply is adopted for the municipal power supply, and one way is used for standby and two ways are used to ensure the continuous operation of the computer (because the battery can only last for 10 ~ 20 minutes generally, in case of power failure for a long time, the computer cannot run). In order to ensure three-way power supply, it is best to increase contact between three-way high-voltage power supplies to minimize power failure time. During load distribution at the low-voltage side, UPS power supply and bypass power supply do not use the same low-voltage distribution cabinet as other power equipment.
UPS
UPS is basically composed of rectifier, battery, static switch, etc. The floor area of UPS is not large, but if it needs to be equipped with battery pack, the floor area will be expanded. In addition, its self weight is large, so its weight factor should be specially considered when arranging the machine room. Due to the high calorific value and high noise of UPS, its internal structure is compact and difficult to clean. Therefore, the ups machine room should be well ventilated, and pay attention to dust prevention and sound insulation.
UPS generally requires that the input voltage of mains power fluctuates between (+ 10% ~ - 15%). In areas where the fluctuation of mains power voltage exceeds the above requirements, AC electronic regulated power supply shall be connected before mains power enters ups.

In this scheme, it is recommended to select American APC MS5000 products (5kV on-line, 1hour), which have advanced and reliable power management functions and are applicable to all network operating systems popular in the market.

2、 Machine room floor
In the engineering and technical facilities of each room of the computing center, the ground is a very important part. The anti-static metal raised floor shall be used in the main engine room area, the anti-static metal raised floor or general raised floor can be used in the terminal room area, and the general terrazzo floor or wooden floor can be used in the power area and office area, The following focuses on the raised floor and anti-static raised floor.

Raised floor, also known as false floor or double floor, is a floor that can be flexibly installed and removed on the real floor of the machine room according to needs. An underground building structure can be formed in the machine room by using the raised floor.

The structure of the raised floor has the following characteristics:

(1). The raised floor structure provides a suitable space for laying the signal line, power line and machine ground wire system in the equipment room. Computer equipment can be electrically connected freely through the raised floor. Because the raised floor is detachable, it is very convenient for the laying, maintenance and replacement of electrical wiring. All connecting lines enter the equipment from under the raised floor, so that the connecting lines between equipment can be directly connected with the shortest distance, so as to reduce the loss of signal in the transmission process.
(2). The computer equipment is used as the static pressure air storage of the air conditioner through the space under the raised floor, which provides convenience for the air conditioner of the equipment and the machine room. Satisfactory air distribution can be obtained. Because the floor with air distribution outlet can be interchanged with ordinary raised floor, the machine room can freely adjust the air distribution. No matter where the equipment is located, the air conditioned can be obtained through the air outlet on the floor.
(3). Regardless of the shape and area of the machine room, it can be assembled conveniently and quickly and removed easily. This facilitates the layout and adjustment of equipment, and reduces the transformation of building facilities caused by equipment expansion or upgrading.
(4). Be able to level the unevenness of the floor with the help of adjustable support.
(5). The floor surface is firm, wear-resistant, clean, dust-free, dust-free, reflective and slippery. It can be wet washed and dusted with a vacuum cleaner.
(6). The anti-static metal raised floor is adopted in the main engine room, which can vent the static charge to the ground and reflect electromagnetic radiation.
Raised floor has become one of the indispensable facilities in modern computer room. As the computer equipment is installed on the raised floor, the connections between the equipment are set below the raised floor, which not only makes the machine room neat and beautiful, but also gives the staff a comfortable feeling.

Based on the performance price ratio, it is recommended to select the composite plastic veneered floor as the ground building material of the machine room.

3、 Wall material and ceiling of machine room
wall
The wall thickness of the machine room shall meet the heat load requirements to minimize the indoor heat load. The materials used should not be easy to burn, and have good heat insulation, sound insulation and sound absorption.

There are many kinds of materials coated on the wall surface of the machine room, which can be reasonably selected by the designer according to the actual situation and referring to relevant materials. Materials that are not easy to produce dust, static electricity and non-toxic are required.

suspended ceiling

The ceiling of the machine room mainly has the following functions: the space above the ceiling to the ceiling (or the upper floor) is used as the static pressure air supply or return air reservoir of the machine room; When it is not used as a wind farm, it can be used to arrange ventilation ducts; Install fixed lighting fixtures and wiring; Install and fix all kinds of air outlets; Install fixed automatic fire detector; Prevent dust from falling.

The ceiling of the machine room shall have a certain bearing capacity and must be able to bear the weight of all installed equipment. The space above the ceiling shall be reserved with an interval of 300mm ~ 800mm. When the air conditioning pipe is installed on the ceiling, the interval shall be determined according to the structure of the air duct, and the space for personnel installation and maintenance shall be reserved. The ceiling components should preferably be removable, at least in the specified section, so that personnel can enter the ceiling space. If the space above the ceiling is used as the static pressure air reservoir for air conditioning, dust prevention measures shall be taken for the space above the ceiling and the roof to prevent dust from falling into the machine room through the ceiling. The selected ceiling board and its components shall also have the properties of light weight, fire prevention, moisture-proof, sound absorption, no dust and no dust collection.

At present, the fabricated light steel keel ceiling is widely used, which is divided into two structural types: U-type and T-type. The U-shaped fabricated light steel keel ceiling uses the U-shaped thin-wall light steel keel as the load-bearing skeleton, and is equipped with fixed components. The ceiling plate is fixed on the load-bearing skeleton with self tapping screws. The T-shaped fabricated light steel keel ceiling uses the T-shaped light steel keel as the skeleton, installs the top plate between the middle and small dragon bones, and then fastens the middle and small keels with lead wires.

There are many materials in the ceiling, such as flammable plastic decorative boards, plastic foam decorative boards, gypsum sound absorbing boards, metal ceiling boards, etc. The top plate has various patterns and colors for designers to choose from.

4、 Computer room access control system
The biggest difference between the computer room access control system and the ordinary electronic door lock lies in the access control system