Example analysis on key points of construction dra

Example analysis of key points of construction drawing design of intelligent building

Abstract: example analysis of key points of construction drawing design of intelligent building, including: automatic fire alarm system; Background music and emergency broadcasting system; Security monitoring system; CATV cable TV system; Generic cabling system; Ba building automation system

key words: automatic fire alarm broadcasting system security monitoring cable television generic cabling Ba building automation Untitled Document through years of electrical design, but if you take re reference measures in advance (for example, I deeply feel that with the improvement of the intelligent degree of modern buildings, the difference between intelligent electrification and traditional electrification design is becoming increasingly obvious. Recently, our institute undertook the construction drawing design of an intelligent building in Shanghai, and I am responsible for the weak current part of the building. According to the relevant national and Shanghai local standards and the owner's opinions, the drawing has been basically designed. During the design process, through in-depth discussion with insiders In terms of extensive communication, I have gained a lot of experience in the process of intelligent design. The following are the design points and personal opinions I have summarized, hoping to be helpful to the design work of my peers. The design is based on the architectural drawings provided by the building discipline, code for electrical design of civil buildings (jgj/t), code for fire protection design of high rise civil buildings (GB) (1999 edition), code for fire protection design of garage, repair garage and parking lot (GB), design standard of intelligent building (GB/t), code for design of automatic fire alarm system (GB), code for design of lightning protection of buildings (GB) (2000 EDITION), technical code for anti static Engineering (DGJ) (J) "Code for engineering design of generic cabling system in buildings and building complexes" (gb/t) system overview this design is the weak current system design of XX commercial building, which is a comprehensive commercial building, integrating offices, shopping malls and restaurants. The building has two floors underground, 21 floors above the ground and four floors of the podium. The telecommunication room is set on the second floor underground, receiving and networking; The building control center is set on the first floor of the building, which is the integrated control center of the weak current system of the building; The antenna receiving machine room is set on the roof and the load cannot rise any more. The second floor underground is the civil air defense area. Classification of weak current system subsystem of XX commercial building: automatic fire alarm system; Background music and emergency broadcasting system; Security monitoring system; CATV cable TV system; Generic cabling system; Ba building automation system. Automatic fire alarm system; The background music and emergency broadcasting system XX commercial building is designed according to the fire rating of class I buildings. The fire control center is set in the building control center on the first floor of the building. The control center can monitor and operate the operation of fire-fighting equipment through the Chinese CRT menu. According to the code for design of automatic fire alarm system, each floor of the building is divided into a separate fire compartment. Each alarm circuit of the automatic fire alarm system receives signals from several fire compartments, and there are a total of 10 alarm circuits. According to the specifications, fire alarm probes are set in each fire compartment, and gas leakage detectors are set in the gas meter room. According to the area of the beam, the underground parking lot is equipped with temperature sensors with sensitivity of class II. Other areas adopt intelligent smoke detectors. The input monitoring module is used to integrate some alarm points that need to be monitored by the system into the bus, such as water flow indicator, wet alarm valve, fire hydrant pump start button indication, emergency alarm button, butterfly valve and fire damper. The system can automatically control the start and stop of fire-fighting equipment such as fire shutter door and smoke exhaust valve. For the fire pump, the start and stop of smoke control and smoke exhaust fans can be controlled manually in the fire control center in addition to automatic control. When the gas leakage detector gives an alarm, it will automatically cut off the main gas valve and receive the feedback signal. After the fire alarm is confirmed, the non fire power supply will be automatically cut off, the power supply of alarm broadcast, fire emergency light and evacuation light will be connected, and the feedback signal will be received. After the fire alarm is confirmed, all elevators stop on the first floor and receive feedback signals. After the fire alarm is confirmed, close the fire shutter door of the corresponding fire compartment, and the evacuation pass replaces the roller shutter door of the original machine measured with a ruler. When the smoke detector alarms, it drops to 1.8 meters above the ground, and when the temperature detector alarms, it drops to the ground, and receives the feedback signal. The fire hydrant pump start button is directly connected to the fire pump control circuit, and the fire pump can be directly started in the building control center. Public places such as corridors and halls in the building are equipped with background music and emergency broadcasting system speakers. Each broadcast zone is equipped with a volume switch to adjust the volume. The fire broadcasting system can also be used as the background music system at ordinary times. After the fire alarm is confirmed, the fire floor and the upper and lower adjacent floors will automatically switch to the fire broadcasting and release the maximum volume. The manual alarm buttons are reserved with fire extension jacks. Fire fighting is set in the elevator machine room, air conditioning machine room, power transformation and distribution room, water pump room and smoke exhaust machine room, and 119 live broadcast is set in the fire control center. The wiring terminal box and module box set on each floor of the fire alarm control system are arranged in the weak current room. The fire-fighting power line and linkage line are fire-resistant wires, protected by KBG steel pipe with great export growth difficulties, and the steel conduit is connected with the grounding system to form a good shielding protection. The metal pipe is coated with fire-proof paint for protection. The pipeline crossing the civil air defense area on the second floor of the underground shall be sealed. The actual layout of the fire alarm system probe can be specifically adjusted during the secondary decoration. Communication interface is reserved between fire alarm system and BA system. Summary: the fire alarm system is important from the perspective of protecting people's property and life safety, and it is the most rigorous drawing review in the weak current system. During the design process, attention should be paid to the specification requirements, especially the mandatory specification requirements. The unconventional linkage sequence of fire-fighting equipment shall be recorded in detail as the program design basis for the commissioning of fire alarm system equipment. At present, the fire alarm system mostly adopts the non-polar two bus system, and the alarm linkage bus is shared, which is convenient for design and construction, but the requirements for bus protection are higher, so the construction requirements of the bus should be in accordance with the construction requirements of the linkage bus. The security monitoring system security monitoring system control center is set in the building control center on the first floor of the building. The security monitoring system adopts an integrated computer security integrated management system, mainly including security alarm system, television monitoring system and patrol system. Infrared radiation detectors are set around the building, and alarm probes are set in important passages (elevator, staircase and public corridor) inside the building. One outdoor color fastball camera is set outside the building, and three indoor color cameras are set in the hall on the first floor