How to design the generic cabling system of Intelligent Community
People often ask Xiaobian how to design generic cabling in an intelligent community. Indeed, this is a question asked by many people. Now let's talk about how to design the generic cabling system of Intelligent Community in combination with the generic cabling design case of intelligent community.
1. Building background
A single 30 storey high-rise residential building with 8 households on each floor, with a total of 8 households in the whole building × 30 = 240 households. The details are as follows:
Number of buildings: 1
Total floors: 0 underground and 30 above ground
Number of households per floor: 8
Clear height of each floor: 3M
Total households of the whole building: 240
Structure and area of each household: three rooms and two halls (area about 90m2)
Main distribution room: distribution room on the first floor
Monitoring management center: main distribution room
CATV Access Center: main distribution room
Computer network center: main distribution room
Building control center: main distribution room
2. Design basis
Engineering Design Manual of the company;
Technical requirements report provided by users;
YD / t926.1-1997 building communication generic cabling system standard (industry standard issued by the Ministry of Posts and Telecommunications);
EIA / tia568a and ISO / iec11801;
EIA / tia570a North American residential cabling standard.
3. Overview of system design
(1) Transmission medium: intelligent residential wiring includes twisted pair, coaxial cable and optical fiber. Among them, coaxial cable is used as the transmission medium of cable TV, twisted pair cable is used to transmit data, telephone, monitoring, intelligent and other signals, and optical fiber is used as the data network backbone between buildings. In this scheme, the intelligent residential wiring system includes four parts: household indoor wiring system, vertical backbone wiring system, inter building wiring system and main wiring room system.
(2) Management Center: the intelligent residential wiring system of this scheme has two-level management centers. The first level management center is the community network control and maintenance center, which is located in the main wiring room on the first floor. It is not only the public management and monitoring center of the whole community, but also the computer network center. The lines of Telecom Bureau and cable TV station are merged into the center, but also the security monitoring center and three meter reading management center. The second level of management is the household small wiring management center of each household unit.
(3) Vertical trunk in the building: the residential vertical trunk line system refers to the transmission cable from the main wiring room of the first building to the home wiring management center of each household unit. Two transmission media are recommended in this scheme: one is 1061004c + 4 pairs of super class 5 cables of XX company, which can support the signal transmission of voice, data and video telephone, anti-theft / disaster alarm system and three meter reading system; The second is 75 Ω coaxial cable, which can support video applications such as cable TV. The star structure is laid from the main wiring room to the home wiring center of each household unit. Each household unit is connected with three 1061004c + Category 5 4-Pair cables and one bus type 75 Ω coaxial cable.
(4) Indoor wiring: household indoor wiring system includes household wiring center, indoor wiring and information socket. Sc305 or other models of XX company can be used for home distribution center. The home distribution center is composed of twisted pair distribution frame and coaxial multiplex panel, which is generally located inside the door of the room and installed together with the main power control box. Household indoor wiring can be wired in place at one time, which can be constructed to a reasonable position by the real estate developer, or to the best position when the final household carries out decoration.
4. Detailed description of system design
Household indoor wiring
Household wiring system consists of household wiring Center (or transfer box TP), indoor wiring and information socket. The cables from the main distribution room on the first floor will be terminated in the home distribution frame. The home distribution center (TP) centrally manages all information points in the home, including computer, telephone, cable TV, videophone, anti-theft / disaster prevention system, three meter reading system, etc. Divided by transmission medium, it can be divided into twisted pair UTP part and 75W coaxial cable TV part. Among them, category 5 twisted pair supports data, voice and visual intercom doorbell system, anti-theft alarm system, three meter reading system and other applications, and 75W coaxial cable supports cable TV, security monitoring, home theater and other applications.
Three 1061004csl super class 5 4-Pair twisted pair cables and one 75 Ω coaxial cable connected to the home distribution center (TP) from the main distribution room on the first floor of each building. Three Cat-5 twisted pairs correspond to three functional relay points respectively, and one coaxial cable is the access relay of wired electrical signals. The functions used by the three twisted pair relay points are as follows:
The first: telephone / ISDN telephone (up to four external lines can be accessed, and four-way telephones are provided at the same time);
The second: intranet, Internet or computer network (data network application, which can support 2 data points);
Third: building control (visual intercom doorbell, three meter reading and anti-theft / disaster prevention alarm system).
Indoor wiring type
Home wiring is divided into two grades: enhanced and ordinary. The configuration of enhanced and ordinary models in the vertical trunk is the same, and the configuration of cable TV and various monitoring points is the same. Distinguish the number of voice points in the center of the home distribution frame.
Enhanced: each household is equipped with 3 data network information points, which are respectively set in the living room, master room and study; 6 voice telephone points are set in the living room, master room, guest hall, study, kitchen and bathroom respectively; The information modules of voice and data adopt category 5 (mps200e); The distribution center adopts category 5 modular distribution frame (dm2150bpathchmax distribution module).
Ordinary type: each household is equipped with 2 data network information points, which are respectively set in the living room and the master room; Three voice telephone points are set in the living room, master room and study respectively; The information modules of voice and data adopt category 5 (mps200e); The distribution center adopts category V distribution frame (110dw-50).
Indoor information point distribution
The following describes the wiring of various functions in the family
Computer interface: the main distribution room in building a is the computer network center, which is used to build the internal network of the residential community and access ISDN, xDSL and DDN through routers or other network equipment, so as to realize high-speed Internet Interconnection. The Internet access speed of residents in the community is not only improved, but also the cost is much lower than that of using ordinary telephone dialing to access the Internet. At home, residents can enjoy the application of high-tech technologies such as distance education, telemedicine, online shopping, e-mail, file sharing and so on. The enhanced type has one computer interface in the living room, master room and study respectively, and the ordinary type has two computer interfaces in the living room and master room, which can be interchanged and plug and play.
Telephone interface: with the increase of information, the installation of a telephone in each household may not meet the requirements of users. Six enhanced telephone sockets are distributed in the living room, each room, toilet and kitchen, and four telephone information interfaces are set in the living room and each room for the ordinary type. Whether enhanced or ordinary, each telephone information port is connected to the TP (small distribution center) of the home through category 5 4-Pair cable 1061. All telephones can be connected to an external line independently, or different information ports can be connected in parallel to use the same telephone number. The switching and change of telephone between different rooms is very simple. Households can flexibly manage in the home distribution center through a jumper. Residents can send and receive faxes or access ISDN phones at home.
Cable TV wiring: the cable TV system shall comply with the local cable TV networking standards, and the network design and devices shall select accessories that comply with the local standards. A 75 Ω coaxial cable from the main distribution room on the first floor is connected to the small distribution center in the family and connected to the input port of the coaxial wiring panel (also known as the distributor) in the small distribution center. The coaxial wiring panel is one port input and four port output. Four coaxial cables can be led out from the four output ports and connected to the cable TV user plug-in box in the living room, master room and each bedroom. CATV system includes branching device, coaxial terminal block, distributor, user box, etc. If the signal is attenuated to 70dB, the coaxial terminal block of signal amplifier type shall also be used for signal amplification and distribution.
Wiring of visual intercom doorbell system: the visual intercom system is composed of an outdoor host installed next to the anti-theft iron door of each unit door of each building and the indoor extension of each household unit. The indoor visual intercom is usually placed on the wall next to the door of the hall. The transmission signal of the visual intercom system includes sound, image and control feeders. The four core wire can meet the transmission requirements. In this scheme, two pairs of wires in 4 pairs of super class 5 twisted pair 1061004csl of XX company are used to transmit the visual intercom doorbell signal.
Wiring of indoor anti-theft / disaster prevention alarm system: the anti-theft / disaster prevention alarm system is one of the important components of intelligent residence. The anti-theft alarm system of each household unit is an independent system, and can be connected with the anti-theft alarm monitoring network of the whole building or even the community.
At present, most of the anti-theft alarm systems used in intelligent houses are: install a glass breaking alarm at the window where criminals are easy to invade, track the movement of suspicious people indoors and send an alarm, and use microwave and infrared monitoring detectors to prevent thieves from opening the door and escaping. The combustible gas alarm provides a reliable alarm for the leakage of combustible gas used in the family. The alarm concentration range is set at 1 / 10 ~ 1 / 4 of the lower limit of gas explosion. In this way, in case of gas leakage, the indicator light and buzzer of the alarm will notify of gas leakage in advance, so as to take corresponding measures to ensure the life and property safety of residents. Fire alarm is generally smoke detector or heat detector. Each anti-theft and disaster prevention alarm signal can be transmitted through two core twisted pair. One 1061 four pairs of super category 5 cables can provide four security signals, corresponding to infrared induction alarm, anti gas leakage alarm, anti glass breaking alarm and fire alarm respectively.
Three meter automatic meter reading system: automatic meter reading and billing of water, electricity and gas is an important part of property management. The implementation of automatic meter reading and billing of water, electricity and gas under computer network management can reduce intermediate links, solve the low efficiency, interference and unsafe factors of household meter reading, and improve work efficiency. The automatic water, electricity and gas meters set in the household are connected with the data sampler. The data sampler is connected to the home distribution center through the adapter, and the home distribution center is connected with the community management computer through the vertical trunk. In this way, the community center management computer system can automatically collect the readings of water, electricity and gas meters in each household's home in the community and charge them regularly Electricity and gas companies conduct data exchange settlement and automatic bank transfer.
Home distribution center (TP)
The home wiring center is the core of home cable management, which uniformly manages the information points of the whole home, and is generally installed on the wall in the living room. The termination equipment in the distribution center is encapsulated in an iron square box. It consists of a twisted pair distribution frame and a coaxial distribution panel. Three 1061 four pairs of cables in the vertical trunk from the main distribution room on the first floor of the building are terminated on the twisted pair distribution frame and connected to each room, living room, toilet and kitchen through indoor wiring to support the signal transmission of data, voice and visual doorbell, anti-theft / disaster prevention alarm system and three meter reading system. One coaxial cable from the vertical trunk is connected to the coaxial terminal board of the distribution center and connected to the living room and each room through four output ports of the coaxial panel to provide broadband video applications such as cable TV and home theater.
The indoor wiring system consists of cables from the home wiring center to each room, living room, bathroom and kitchen. The 1061004c + enhanced category 5 4-Pair twisted pair of XX company is connected to each room, bathroom and kitchen, which can support 622Mb / s, 100m network application, visual intercom doorbell, anti-theft / disaster prevention alarm system and three meter reading system, Four 75 Ω coaxial cables are connected to the living room and rooms to provide cable TV transmission. In this scheme, only the indoor wiring of cable TV, voice and data networks is considered. As for the vertical backbone and indoor wiring of visual access control, anti-theft / disaster prevention alarm system and three meter reading, it will be laid at the point according to the actual needs of users in the future.
The calculation method of indoor wiring copper cable is as follows (refer to the engineering design manual of the company for this method):
Average distance (m) = (farthest point distance + nearest point distance) / 2 × 1.1+7
Number of cable boxes = total points / (305m / box) + 1
According to the calculation, the cables required for each household unit are:
Enhanced type: 1061004csl: 60m; 75 Ω coaxial cable (/ 5): 40m.
Ordinary type: 1061004csl: 40m; 75 Ω coaxial cable (/ 5): 30m.
Data and voice information
The data system adopts enhanced super class 5 mps100e information socket (CAT5), and the voice also adopts enhanced mps100e information socket (CAT5). The indoor wiring and information socket of videophone, anti-theft / disaster prevention system, three meter reading system are not considered temporarily. There are 9 information points in total, so 9 mps100e 262 information modules are required.
2. Ordinary type:
The data system adopts enhanced super class 5 mps100e information socket (CAT5), and a computer interface is set in the living room and study, so two mps100e modules are required. The voice also adopts enhanced super class 5 mps100e information base (CAT5), which has three telephone interfaces, so three mps100e modules are required.
The voice and data information modules are installed in the domestic concealed panel. D8sa type work area user jumper is used for high-speed data transmission to connect user equipment; The voice can be connected with the RJ11 connector of the equipment. The sockets of anti-theft / disaster prevention system, visual doorbell system and three meter reading system are not considered temporarily.
Standard information sockets are concealed on the wall (ceiling, ground or open installation can be considered for special application environment), and the bottom edge is 30cm away from the ground. In order to facilitate use, 220V power sockets shall be provided near each group of information sockets to supply power to data equipment. It is recommended that the installation position shall not be less than 10cm away from the information socket.
The information socket of cable TV is also called cable TV user box. The TV or VCD machine in each room can be connected to the user box through the tail line.
5. Building vertical trunk system
Residential vertical trunk system refers to the subsystem connecting the main wiring room of the first floor to the household wiring management center of each household unit. Two transmission media are recommended in this scheme: 1061004c + 4 pairs of super category 5 cables of XX company, which can support signal transmission of voice, data and videophone, anti-theft / disaster alarm system and three meter reading system; 75 Ω coaxial cable can support video applications such as cable TV. The star structure is laid from the management center structure to each household unit. The management center connects three 1061004c + Category 5 4-Pair cables and a bus type 75 Ω (/ 7) coaxial cable to each household unit.
The clear height of each building is 87m, and the average length of vertical cables is 55m. Each box of 1061004csl (305m / box) can be pulled by 5. According to 3 1061004csl per household and 240 households in the whole community, 144 boxes of 1061004csl (305m / box) cables are required.
The unit of coaxial cable is code, 1 code = 0.9144m. Each building has two unit doors, so there are two cable TV branches. Each floor of each branch has a coaxial four branch device, which divides the cable TV signals from the first floor into four pairs to transmit to the four residents on this floor of the unit door. A total of 60 coaxial four branches are required. According to 100m of each branch road, the whole building needs about 220 yards of coaxial cable.
Characteristics of coaxial cable: considering economy and performance, domestic 75 Ω coaxial cable (CT-100) is selected as the vertical backbone of CATV.
6. First floor main wiring room
The main distribution room is located on the first floor of the building. It is the public management monitoring center of the community and connected to public equipment, such as network equipment, PABX, visual doorbell monitoring center, three meter reading centralized management host and anti-theft / disaster prevention monitoring center. The main distribution room can manage all information points of residents in the whole building. Star shaped cables are laid from the main distribution room to the household distribution frame of each unit household to communicate the information channel between each household and the main distribution room.
The main distribution room is composed of distribution frame, jumper slot, cable TV branch and amplifier installed on the wall. Considering that the cost can be reduced as much as possible on the premise of fully meeting the system functions, the copper distribution frame in each main distribution room is centrally managed by the 110ab-300ft distribution frame of XX company, and is equipped with corresponding 188b3 jumper slot. The cable TV part includes branching device, amplifier, etc. The cable TV signal from the cable TV Bureau passes through the cable TV branch in the main distribution room, and then passes through the four branches on each floor to be transmitted to the TV of each household.
There are three 1061004csl, four pairs of cat 5 twisted pairs and one coaxial cable distributed to each household unit in the main wiring room. 10 110ab2-300ft Cat 5 distribution frames are required to terminate the twisted pair vertical trunk cables of 240 households. In addition, two 100ab2-300ft are required to access the telephone line from PABX or telecom bureau. 110ab2-300ft type V distribution frame is fixed on the wall. The 110a3 jumper slot is placed between each two distribution frames in each column, and a total of 8 110a3 jumper slots are required. The change of voice and data network configuration can be easily realized through jumper management, which is beautiful and generous.
110ab2-300ft super category 5 distribution frame can terminate 300 pairs of wires and can be installed on the wall or frame. It is suitable for cross connection system and can be used in a wide range.
110A jumper slot is a white, fireproof and plastic structure, which is used to accommodate connecting cables and jumpers. It is placed between 110ab2-300ft, and provides parallel transfer for each group of connecting cables and jumper wires at the top of each column.
Since the main distribution frame of the first floor needs to be equipped with network equipment, it is necessary to carry out necessary decoration or offices with the same conditions, and be equipped with lighting equipment to facilitate equipment maintenance. At the same time, in order to ensure the reliable operation of the network, three groups of 220V power sockets with independent power supply shall be equipped in the management center, and the power of each management center shall not be less than 400W.
The above is all about how to design the generic cabling system of the intelligent community and the design scheme of the generic cabling system of the intelligent community. I believe you have understood how to design the generic cabling system of the intelligent community in combination with the above examples. I hope you can give you some help.