【 Weak current College 】 automatic alarm system in high-rise application of intelligent building group

Mankind has entered the 21st century, as China's national economic development and the overall strength of enhanced quality of life of the people have greatly improved the living conditions and the living environment has also been significantly improved. As the science and technology, control technology and communication technology development and application of high speed, automatic control technology, sensor technology has been widely used in industrial and civil construction, the building also has a certain smart. With network technology as the core of the rapid penetration of information technology, greatly expanding the architectural complex of the national space development, in built a group after group of intelligent housing community. According to the needs of the development of intelligent building, national (Xinhua)--the intelligence architectural design standard ", automatic fire alarm system as one of the content.
Because of the urban population growth, urban land resource scarcity, residential area built large comprehensive in high-rise buildings, the podium as the Siamese, many high-rise residential building on the podium, the podium with shopping malls and other public buildings. Northeast of Beijing wangjing a community as an example, the total area of about 70 million square meters, building with underground garage, podium with supermarkets, shopping, dining, entertainment, banking, etc., from several top part of the House and Office. The increase in population, gas, household appliances, electrical equipment, and public in the use of unsafe, etc., all have a fire hazard, to community residents of life and property caused great threat. Therefore, people are increasingly urgently require community property in the facilities and the management to adopt effective measures to meet the increasing security requirements.
In order to effectively ensure the residents of life and property safety, in an integrated residential and residential community introduces intelligent means of security management. Intelligent home security system is mainly composed of anti-theft system and fire protection systems (fire auto-alarm and coordinated control system). Particularly in the event of fire of high-rise buildings, resulting in casualties and economic losses due to very heavy. Fire protection measures is therefore particularly important.
Usually in order to facilitate the management, the community should be built in fire Centre, groups of wuyeguanlizhongxin high-rise building a layer of fire room, the fire in the community room fire auto-alarm controller (regional or slave) and fire Centre control hosts (concentration or PC), through the community network connection as a whole, the whole system should consider use of decentralized control, centrally managed structure layout. Through engineering design, automatic fire alarm system can achieve the following functions:
I. building fire alarm system features:
In accordance with the fire code, located in the underground garage heat detector, Manual alarm and fire emergency broadcasting; the podium Mall, banks, entertainment and other Office smoke detector, manual, alarm, and set the speakers for the usual background music, a fire emergency broadcast. In high-rise residential section, in the elevator room, public corridor, and other public places in arrangement of smoke detectors, manual, alarm, emergency broadcasting system, in the layer staircase door alarm Flash (or sound and light alarm), advanced residential bedroom, study room and living room, Office smoke detector. In all public areas of the fire hydrant boxes are equipped with fire hydrant emergency reboot the pump button.
Fire alarm system linkage control (control relationship see fire control logical relational tables), it has the following content:
Control system alarm device types on the managed device and equipment movements results location and description
Water fire suppression system fire hydrant button to launch the fire hydrant pump pump house
Alarm valve pressure switch start spraying pump pump house
Flow meter (alarm, fire layer) water pipes
Repairing signal valve (alarm reminder note) water pipes
Fire water tank water or water pressure startup, stop regulators pumps, etc.
Preaction system the area detector or manually button start preaction alarm valve filling the area (closed sprinkler)
Pressure switch start spraying pump pump house
Water spray system temperature, smoke feeling alarm or emergency button at the same time start the deluge valve and start spraying pump (automatic delay of 30 seconds) the region (open nozzle)
Air conditioning smoke detector or manually button to turn off the system air conditioners, new fans, ordinary blowers
Turn off the layer control fire damper
Fire damper 70 ℃ temperature close to close the system air conditioners or new fans and blowers
Smoke smoke detector or manually button to open the exhaust fan and positive-pressure blowers roof
Open the exhaust port (valve)
Open the positive pressure air is on fire with a bottom layer, layer
Dual-use two-speed fan into high speed exhaust status
Dual air ducts, vents closed properly, open exhaust port
Exhaust fan side 280 ° c temperature fire damper closing off the exhaust fans for roof
Combustible gas alarm open the room exhaust fan, turn off gas pipeline valve kitchen, gas meter room, underground gas boiler room, etc.
Fire shutter fire shutter smoke detector next to the shutter or dropped half shutter group
Fire shutter detector temperature next to the shutter or group of shutter to bottom
Shutter curtain protection there, start the water curtain solenoid valve and rain pump
Electronically controlled normally open fire door smoke or warm sense of release electromagnet, close the fire door
Electronically controlled vertical wall beside the smoke smoke or warm sense of release the electromagnet smoke vertical wall or group smoke hanging wall hanging
Manual-system manual/automatic, manual-cut off power to the non-fire-fire-flames layers, upper and lower the level
Manual/automatic, manual fire-alarm master boot or acousto-optic alarm fire layer, a layer up or down
Manual/automatic, manual focus, the lift to the first fire use fire elevator inputs
Manual on the regional emergency broadcast on fire with a bottom layer, layer
Fire alarm, telephone contact, directing fire
1. water fire suppression system:
Fire hydrant buttonAction, the system provides automatic/manual fire pump start-up and shutdown, and monitor the operational state. Water spray dry pipe pressure switch, the system can automatically start spraying pump, and monitor the operational state.
In the underground gas boiler room located water spray extinguishing systems, water nozzle with open sprinkler, room, Interior sets of smoke and heat detector. When the smoke and heat detector with alarm, the system can be automatic, manual and emergency operations in three ways, turn on the shower solenoid valve. Pressure switch action after system start spraying pump, and monitor the operational state.
In the underground garage located preaction system of water sprinkler, water nozzle with closed sprinkler, water pipe is full of air, when heat detector alarm, automatic/manual on water pipe water filling of solenoid valve, pipe when the nozzle after breaking, dry pipe pressure switch movement, the signal returned fire on duty, auto/manual start spraying pump, and monitor the operational state.
2. the smoke control system:
When the system is confirmed immediately after the fire occurred on the burning layer and its upper and down of positive pressure ventilation valve (mouth) and automatically open the top-level corresponding pressure blower, the stairs passage to before chamber pressure, prevent smoke evacuation, ensure environmental safety escape. In each floor corridor, basement and no window in the room is equipped with fire smoke exhaust valve normally closed (mouth), fire, you can automatically or manually open fire region fire smoke exhaust valve (mouth), and linkage corresponding exhaust fan starts, when the top exhaust fan in front of the fire smoke exhaust outlet temperature reached 280 ° c, the valve closes, the linkage of the exhaust fan is also closed.
3. fire broadcasting system:
When the system after the confirmed outbreaks of fire, the system can automatically cut off the background music broadcast, or first in fire control cabinet manual control on the ignition on, the lower layer and the speakers for the emergency broadcast, guidance in building evacuation.
4. elevator landing systems:
When after the confirmed outbreaks of fire, the system immediately forced all elevators to the first floor, and automatically cut off the passenger and freight elevators, lift only reserved for firefighters and fire.
5. shutter control:
When fire channel roll-front sides of the smoke detector alarm, control the shutter down to the ground, of distance 1.8m and let smoke evacuation. When the shutter on both sides of the heat detector alarm time, the system control shutter fell to the ground, to complete the zones are separated. Roll-front side also has a shutter control movements of button and keep the delay (1-30 seconds adjustable) shutter automatically dropped.
6. other linkage control:
When the confirmation of a fire, manual/automatic will fire layer and its upper and down alert Flash or sound and light alarm starts to remind the building personnel evacuated, and cut off by the fire service duty manual ignition on, the lower layer and the non-fire power.
Second, community fire system network features
Community fire system network aims to make the management information and control information integration to meet the Community fire system distributed control, centralized management needs. Fire Centre is equipped with a large community fire simulation disk, display various buildings detector alarm, fire-fighting facilities, as well as perform alarm control work.
Fire network system, used in the building fire room located sub-station (fire alarm controller), can be considered as a network of regional aircraft (slave), fire controllers in addition receive the building fire alarm signal, manual/automatic output control program, start the fire-fighting facilities of linkage, also has a performance superior networking features, even with the Central Station (Central machine or host computer) can be out of touch, finish all the work, because the building's fire alarm controller adopts advanced multi-channel CPU PC processor technology, according to the architectural features of all own, forming its own alarm, control subsystem.
Central station is located in the Community Centre, showing fire the whole system of the fire detectors, control devices and the status of the Act.
The central station and the main function as follows:
A. you can access the system in each branch of the monitoring points;
B. can complete alarm and alarm handling;
C. you can monitor the status of all devices running on the Internet;
D. press the set program complete linkage control;
E. time and date automatically transform;
F. alarm event analysis and disposition of records;
G. documents and reports;
H. fire building graphical display operation;
I. also has security patrol functions.
Central station is equipped with and sub-station data/voice network communication interface, network topology can be a star (or ring-shaped), Central station and substation has two communication line, a is a data communication lines; one is a voice communication lines.
In short, with modern control technology, computer and network technology and the rapid development, the improvement of living conditions, in the intelligent community many weak electricity systems, automatic fire alarm system is indispensable, intelligent fire alarm system in the community and more generally in the application, make the intelligent community weak electricity system integration is more perfect, resources are more fully, more complete, more focused and efficient security systems, enabling true sense of the intelligence community.