AUTOMATIC FIRE DETECTORALARM AND EXTINGUISHER

By Rahul sinha

This project is a prototype of an automatic fire alarm and extinguishing system.

It works on the principle of detection of fire by sensing rise in temperature, using a Thermostat.

As soon as the fire is detected the circuit becomes live thereby giving an audio alarm and simultaneously activating fire extinguishing system.

ABSTRACT

COMPONENTS REQUIRED

1. Resistors-1. 330k2. 1k3. 0.22k

2. Capacitors1. 0.04uf

3. Transistors1. PNP-3692. NPN-548

4. Diode1. 1N 4007

5. Buzzer6. Fire Switch7. LED bulb8. PCB –Printed Circuit Board9. Wires10.Water Pump11.Transformer

FUNCTION OF EACH

COMPONENT

Function-A thermostat is a component of a control system which senses

the temperature of a system so that the system's temperature is maintained near a

desired setpoint. The name is derived from the Greek words

thermos "hot" and statos "a standing".Use-To detect the heat produced by the fire.

THERMOSTAT

PRINTED CIRCUIT BOARD(PCB)

Function-A printed circuit board (PCB) mechanically supports and electrically connects electronic components using conductive tracks.

WATER PUMP

Function-A water pump is a device that moves water by mechanical action.

Use-To extinguish the fire

BUZZER

Function-A buzzer or beeper is an audio signalling device, which may be mechanical, electromechanical, or piezoelectric.

Use-To alert people in the case of a fire.

TRANSFORMER

Function-A transformer is a static electrical device that transfers energy by inductive coupling between its winding circuits. 

Use-To convert 220V AC to 9V AC

FULL WAVE RECTIFIER

Function-A full-wave rectifier converts the whole of the input waveform to one of constant polarity (positive or negative) at its output.

Use-To convert AC to DC

Circuit Diagram-Fire Alarm

Circuit Diagram- Water Level

Application

Our project can be chiefly used to detect and extinguish fire to prevent the fire from causing any damage. Moreover, our project not only focuses on the extinguishing part but also on water conservation which we have achieved using the water level indicator. So safety and conservation go hand-in-hand.

Problem Faced

Gathering the components.Making the connections on the bread board.

Finding a DC water pump .Converting AC current to DC(We couldn’t convert the same) .

Conclusion

By using our “Fire Alarm and extinguisher”, we were able to achieve our desired purpose.