The mankind has entered the twenty-first Century, with the development of our national economy and the enhancement of comprehensive national strength, the quality of people's life was greatly improved, living conditions and living environment has been greatly improved. With the development of 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 certain intelligence. And network technology as the core information technology rapid infiltration, greatly expand the development space of buildings, the country built a batch of another batch of intelligent residential quarters. According to the demand of the development of intelligent building, the state promulgated in July 3, 2000" standard for design of intelligent building automatic fire alarm system", as one of the content.

As the city population expansion, city land resources are scarce, residential area, many built large comprehensive high-rise buildings, namely to annex is a conjoined, many high-rise residential building in the annex, annex with shopping malls and other public buildings. In Beijing City, northeast Wangjing area as an example, a total construction area of about about 700000 square meters, underground structures with garage, annex a supermarket, shopping mall, restaurants, entertainment, banking, top part is composed of several houses and office buildings. Building population increases, gas, household appliances and public electrical equipment used in the safety factor, has a fire hazard, the lives and property of residents have caused a great threat to. Therefore, people have become more and more urgent requirements of residential property in the facilities and management to adopt effective measures, in order to meet the increasing security requirements.

In order to effectively guarantee the safety of the lives and property of residents, the comprehensive residential and residential area, introduce the intelligent means of security management. Smart home security system is mainly composed of an anti-theft system and fire system ( automatic fire alarm and linkage control system ). Especially for high-rise buildings in case of fire, causing casualties and economic loss is very heavy. Therefore high-rise building fire safety measures is particularly important.

Usually in order to facilitate management, district fire control center should be built on the property management center, a layer of groups of high-rise building fire duty room, duty room within the area of fire automatic fire alarm controller ( regional machine or machine ) and central fire control host ( concentrating machine or PC ), through the local area network is connected into a whole, the whole system should consider adopting distributed control, centralized management of structural layout. Through engineering design, automatic fire alarm system can achieve the following functions:

One, building fire alarm system function:

According to the code of fire in underground garage, a temperature detector, manual alarm and fire emergency radio; in the podium mall, bank, public place of entertainment office smoke detector, manual alarm, and set the loudspeaker used in the background music, fire emergency broadcast. In high-rise residential section, in the lift lobby, public corridors and other public places layout smoke detector, manual alarm, emergency broadcast device, the staircase is located on the door alarm flashing lights ( or sound and light alarm ), during the senior residential bedroom, living room, study and a smoke detector. In all public places are equipped with a fire hydrant box emergency pump start button.

Automatic fire alarm system linkage control ( control relation between fire control logic relation table ), the main one of the following:

Control system of controlled equipment and alarm equipment types after the action of position and results

Water fire fighting system fire hydrant button to start the fire pump pump

Alarm valve pressure switch start spray pump pump

Flow indicator ( alarm, fire water branch pipe layer )

Overhaul signal valve ( alarm, to remind attention) water branch

Fire pool water or water pressure to start, stop pump etc.

Preaction system the area detector or manual button to start the pre-action alarming valve water filling the area ( closed nozzle )

Pressure switch start spray pump pump

Water spray system of temperature, smoke at the same time the alarm or emergency button to start the deluge valve start spray pumps ( automatic delay 30 seconds ) of the region (open head)

Air conditioning system smoke detector or manual button to close the system air conditioner, fresh air machine, ordinary blower

Close the layer of electrically controlled valve

Fireproof valve 70 DEG C temperature control to shut down the system air conditioner or fan, blower

Smoke control system smoke detector or manual button to open the exhaust fan and a positive pressure air blower roof

Open the exhaust port ( valve )

Open the positive pressure air fire layer, each layer under the

Dual double speed fan to exhaust state of high speed

Dual duct, close the normal exhaust outlet, open exhaust port

Exhaust fan at 280 DEG C temperature fire valve shut off the exhaust fan roof

Combustible gas alarm opened the room exhaust fan, close kitchen, gas pipeline valve gas meter housing, underground gas boiler room

Fire shutter doors fire shutter door smoke detector to the rolling shutter door or the group dropped by half

Fire shutter door temperature detector the shutter or the group of rolling to the bottom

Shutter with water curtain protection, starting electromagnetic valve and pump water curtain of rain

Electronic control normally open fire door smoke or temperature-sensitive release electromagnet, close the fire doors

Electronic smoke-keeping-off hung-down wall next to smoke or heat release electromagnet, the retaining wall of smoke or the set of retaining wall of smoke ptosis

Manual system manual / automatic, manual cutting off fire layer non fire power fire layer, each layer under the

Manual / automatic, manual fire alarm initiating layer or alarm fire layer, each layer under the

Manual / automatic, manual lift to the first, fire elevator into the fire

Manual on regional emergency broadcasting fire layer, each layer under the

Fire telephone alarm at any time, contact, direct fire

1 water fire extinguishing system:

Fire hydrant button action, the system can automatically / manual start and stop, fire pump, and monitoring the running state. Water spray pipe on the pressure switch, the system can automatically start spray pump, and monitoring the running state.

In the underground gas boiler room design of water spray fire extinguishing system, water spray head with open nozzles is set inside the room, several groups of smoke, temperature sensing detector. When the smoke, temperature detector and alarm, system can automatically, manual and emergency operation in three ways, open the deluge valve. The pressure switch after the system start spray pump, and monito, ring the running state.

In the underground garage of a water spray preaction system, water spray head adopts a closed type nozzle, hose filled with air, when the temperature detector alarm system, automatic / manual opening pipe electromagnetic valve on the water, when the head is broken water pipe gas, dry pipe pressure switch, signal return fire duty room automatic / manual start the spray pump, and monitoring the running state.

2 smoke control system:

When the system is confirmed after the fire, immediately opened fire on the lower layer, and the positive pressure air supply valve ( port ), at the same time automatically open top corresponding pressurization fan, so that the stairs antechamber channel for positive pressure, preventing the gas invasion, to ensure the evacuation escape when the environmental safety. In the corridor, basement and windowless room with a normally closed fire exhaust valve ( export ), fire, can be automatically or manually opened fire area fire exhaust valve ( port ), at the same time linkage corresponding exhaust fan start, when the top smoke fan before the fire smoke outlet temperature reached 280 degrees, the valve is closed, linkage exhausting machine also closed at the same time.

3 fire emergency broadcasting system:

When the system is confirmed after the fire, the system can automatically cut off the background music broadcast, or in fire control room control cabinet on manual control, switch on the ignition, the lower layer and the speaker for emergency broadcasts, guiding the building evacuation.

4 elevator landing system:

When the fire alarm system immediately after landing, all elevator to the first floor, and automatically cut off the power supply, freight elevators, retaining only the fire elevator for firefighters use.

5 door shutter control:

When the fire passage on the shutter doors on both sides of the smoke detector alarm, system control shutter doors down to from the ground 1.8m, smoke and evacuation. When the rolling door on both sides of the temperature-sensing detector alarm, system control shutter doors down to the ground, to complete the fire district partition. Rolling shutter door is arranged on both sides of rolling shutter door to control the lifting button, and a keep delay ( 1-30 seconds adjustable ) after rolling shutter door automatic down function.

6 other control linkage:

When the fire alarm, the system will auto / manual will fire layer and lower layer, the alarm flashing light or sound and light alarm start, remind people in the building and the timely evacuation, fire duty room manually cut burning layer and lower layer, the fire power.

In two, community alarm system network function

Residential alarm system network, is to make the management information and control information integration to adapt to the district fire alarm system distributed control, centralized management of demand. Fire control center with a large community fire simulation disc, display various buildings detector alarm, the fire fighting facilities operation, as well as the implementation of alarm and control.

Fire alarm network system, used in the building fire duty room set up sub-station ( fire alarm controller ), can be viewed as a network of regional machine ( machine ), in addition to receiving the fire alarm controller with fire alarm, manual / automatic output control program, starting the fire apparatus, but also has the superior performance of the networking function, even with the central station ( central machine or PC ) lost contact, but also able to complete all the work, because the building 's fire alarm controller adopts advanced multi-channel CPU microcomputer processor technology, according to the construction of the characteristic of oneself, form their own alarm, control subsystem.

The central station is located in the district fire control center, the system can display the fire detector, the control device and the working state of each sub-station.

The central station, the main function is as follows:

A can access each substation monitoring system;

B. Can complete the alarm and alarm processing;

C can monitor online all the running status of equipment;

D. According to set program complete linkage control;

Time and date of automatic transformation of E;

Analysis and treatment of F. The alarm event record;

G document and report;

H. Fire building graphic display operation;

I also has a security patrol functions.

The central station is provided with each substation data / voice communication network, network topology can adopt star type ( or ring type), the central station to station has two communication lines, a data communications circuit; a voice communication line.

In conclusion, with the development of modern control technology, the computer and the network technology rapid development, people's living conditions improve, a lot of weak current system in intelligent community, automatic fire alarm system is indispensable, intelligent fire alarm system application in the community are becoming more and more popular, the Intelligent Community weak system integration is more perfect, more resources are make full use of, the function is more complete, more concentrated and efficient security system, thus realizing the true sense of the intelligence community.