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INTRODUCTIONINTRODUCTION

The automatic fire suppression system (AFSS) isThe automatic fire suppression system (AFSS) isbasically designed for the office use. The principlebasically designed for the office use. The principleobjective of this system is to effectively andobjective of this system is to effectively andaccurately eliminate the fire.accurately eliminate the fire.

This system minimizes the damage to the officeThis system minimizes the damage to the officesupply and computers by spraying the water only atsupply and computers by spraying the water only atthe spot of fire.the spot of fire.

This system is activated when the smoke sensorThis system is activated when the smoke sensor

detects the existence of the smoke. Once it isdetects the existence of the smoke. Once it isactivated it automatically detects the fire through theactivated it automatically detects the fire through theuse of flame sensors and the electric valve controlsuse of flame sensors and the electric valve controlsthe nozzle to release water towards the fire.the nozzle to release water towards the fire.


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PROJECT BACKGROUNDPROJECT BACKGROUND

Water is the most commonly used fire suppressionWater is the most commonly used fire suppressionagent among all the other fire suppression agents dueagent among all the other fire suppression agents dueto its low cost, non toxic and safe environmentalto its low cost, non toxic and safe environmentalcharacteristics. As a result water sprinkler system ischaracteristics. As a result water sprinkler system is

the most widely used system for fire suppression, butthe most widely used system for fire suppression, butthe limitation of this system is that water releasedthe limitation of this system is that water releasedfrom the sprinkler does not falls on the exact spot offrom the sprinkler does not falls on the exact spot ofthe fire.the fire.

One solution to above problem is to create a systemOne solution to above problem is to create a systemhaving the halohaving the halo--carbon or inert gases which is againcarbon or inert gases which is againthe more costly.the more costly.

Instead of replacing the total water sprinkler system,Instead of replacing the total water sprinkler system,the improvement in the same system can make itthe improvement in the same system can make it

suitable for the user.suitable for the user.


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This AFS System consist of motorized water nozzleThis AFS System consist of motorized water nozzle

with electric valve. This nozzle is capable of 360with electric valve. This nozzle is capable of 360

degree rotation and thus discharge the water only atdegree rotation and thus discharge the water only atthe spot of fire.the spot of fire.


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DESIGN REQUIREMENTS AND GOALSDESIGN REQUIREMENTS AND GOALS

GOALGOAL ::-- The goal of this system is to design anThe goal of this system is to design anaccurate system that can easily detects the fireaccurate system that can easily detects the fireand can provide effective control over it.and can provide effective control over it.

DESIGN REQUIREMENTSDESIGN REQUIREMENTS::--

1.1. The system must automatically detects the fire andThe system must automatically detects the fire andactivate itself.activate itself.

2.2. The system must accurately locate the spot of fire,The system must accurately locate the spot of fire,rotate its water nozzle and spray a beam of water torotate its water nozzle and spray a beam of water tothe source of fire.the source of fire.

3.3. The system must automatically deactivate when theThe system must automatically deactivate when the

fire has been put out.fire has been put out.


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BLOCK DIAGRAMBLOCK DIAGRAM

SMOKE

DETECTOR

MOTOR ELECTRIC

VOLVE

FLAME

DETECTOER

MCUAVR

ATMEGA 32


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BLOCK DIAGRAMBLOCK DIAGRAM

SMOKE

DETECTOR

MOTOR ELECTRIC

VOLVE

FLAME

DETECTOERMCU

AVR

ATMEGA

32D

R

IV

E

R

S

D

R

I

V

E

R


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WORKINGWORKING

Smoke DetectorSmoke Detector

Ionization smoke detector (Kidde 9VIonization smoke detector (Kidde 9V

Ionization Smoke Alarm) is used in this system,Ionization Smoke Alarm) is used in this system,

because of its high sensitivity to invisible smoke,because of its high sensitivity to invisible smoke,

allowing it to trigger the whole system when smoke isallowing it to trigger the whole system when smoke is

detecteddetected


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BLOCK DIAGRAM OFBLOCK DIAGRAM OF

MICROCONTROLLERMICROCONTROLLER


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FEATURES OF MICROCONTROLLERFEATURES OF MICROCONTROLLER


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FLOWCHARTFLOWCHARTSLEEP MODE

SCAN X

360

BACK TO

SLEEP MODE

BACK TO INITIAL

Y-POSITION

BACK TO INITIAL

X-POSITION

SCANY

90

PUT OUT

FIRE

DETECT

SMOKE

SMOKE ALARM TRIGGER

FIRE DETECTED

NO FIRE

FIRE DETECTED

FIRE DETECTED

NO FIRENO FIRE


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FLOWCHARTFLOWCHARTSLEEP MODE

SCAN X

360

BACK TO

SLEEP MODE

BACK TO INITIAL

Y-POSITION

BACK TO INITIAL

X-POSITION

SCANY

90

PUT OUT

FIRE

DETECT

SMOKE

SMOKE ALARM TRIGGER

FIRE DETECTED

NO FIRE

FIRE DETECTED

FIRE DETECTED

NO FIRENO FIRE


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ADVANTAGEADVANTAGE

This system automatically detects the fire and also

provides the efficient control over it.

This system is adequate and chip solution for fire

suppression.

This system locates the exact spot of fire hazard, so

that it minimizes the damage to the electronic

equipments and office power supply.

The installment of the system is very easy.


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DISADVANTAGESDISADVANTAGES

1. The flame sensors and smoke sensors have wide1. The flame sensors and smoke sensors have widedetecting ranges and adjustments have to made indetecting ranges and adjustments have to made inorder for the sensors to detect the exact fire locationorder for the sensors to detect the exact fire location

and to produce useful outputs.and to produce useful outputs. 2. A transformer is needed to convert a 120V input2. A transformer is needed to convert a 120V input

voltage to approximately 6V.voltage to approximately 6V.

3. Extra circuitry is required for flame sensors as they3. Extra circuitry is required for flame sensors as they

require a higher input voltage.require a higher input voltage. 4. Testing of smoke sensors is complicated.4. Testing of smoke sensors is complicated.

5. Difficult to design the mechanism which allows the5. Difficult to design the mechanism which allows the360 degree rotation to stepper motor.360 degree rotation to stepper motor.

6. Testing of circuit is difficult.6. Testing of circuit is difficult.


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APPLICATIONSAPPLICATIONS

This system is mainly used in offices.This system is mainly used in offices.

This system can be used as home security system.This system can be used as home security system.

It can be used in hotels, theaters, shopping malls andIt can be used in hotels, theaters, shopping malls and

other areas.other areas.

It can be used in laboratories.It can be used in laboratories.


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FUTURE MODIFICATIONSFUTURE MODIFICATIONS

In the future this system should not only detects andIn the future this system should not only detects and

extinguish the fire, but should also automaticallyextinguish the fire, but should also automatically

reports a case fire hazards to the fire department whenreports a case fire hazards to the fire department when

the system detects 3 or more fire locations, indicatingthe system detects 3 or more fire locations, indicatingthat the fire hazards are going out of control.that the fire hazards are going out of control.

An alarm can be included which can indicate theAn alarm can be included which can indicate the

existence of fire.existence of fire.

The size and weight of the system can be reduced byThe size and weight of the system can be reduced by

using smaller components and lighter materials.using smaller components and lighter materials.


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THE END !

Thanking you!!!.....


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