Automatic Emergency Light and Remote SMS System in case of Fire

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Enhanced Smoke Detection System with

EMERGENCY LIGHTSand

REMOTE MESSAGING SYSTEM

Submitted By:09061720906175090618209061840906187

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Reasons of Major Losses

• Lower quality of Fire Detection System• Communication gap among the buildings and Nearest Fire

Service Stations• Lack of Fire Extinguishers• Absence of Emergency Systems

Project Overview:

• A remote SMS system to communicate immediately with nearest fire stations, local PS, local hospitals and other necessary places

• A emergency light system in case of power failure

Required chips

• ATMEGA32A• LM35 (Heat Sensor)• LM324 (Op-Amp)• 7404 (Not Gate)• SIM900 (GSM Module)

Block Diagram (Emergency Light)

Main Line

220-6V XFR

Charge/Discharge

DC Battery

Emergency Light

Block Diagram (Remote SMS)

5V Vcc

LM35 (Heat Sensor)

Voltage Comparator

ATMEGA32A

GSM Module

Circuit Diagram

Remote SMS System

• The GSM module (SIM 900) is interfaced with ATMEGA32A in the total system

Sensing The Fire• A heat sensor (LM35) is used to detect room temperature• A comparator circuit is used to compare the output voltage of

LM35 with a given reference voltage• If the output is above certain level, it takes the decision that a fire

incident has occurred

SOS

As the fire has been detected, the module will automatically send SMS to necessary persons and places

Emergency Light System

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Emergency Light System

• Powered by a rechargeable DC battery• If the main power goes off, the emergency lights

automatically turn on• Other times, the battery is being charged and kept nearly

100% charged

Cost Estimation

• GSM Module- Tk. 2300• Transformer (220-6V)- Tk. 65• Microchip (ATMEGA32A)- Tk. 200• Heat Sensor (LM35)- Tk. 45• DC Battery (2 pcs)- Tk.50• Miscellaneous- Tk. 130

• Total Cost- Tk. 2790

In case of MASS PRODUCTION, total cost can be decreased to Tk. 2000 (estimated)

Limitations• LM35 is very sensitive, so in case of other temperature arising

incidents, the system can turn on.• The output of LM35 is in mV range (10 mV/◦C), so minor noise can

activate the system

Future Development

• Inclusion of fire alarm• Automated Fire Extinguishers in sensitive places

Cautions• Both GSM Module and Microchips are voltage sensitive,

minimum increase can harm these devices• GSM module is temperature sensitive• Total system (except the LM35) should be installed in a

neutral place

Thank you

Save life, save property, get your own device now

ContactAntar, Didar, Pradip, Siam, Shantonu

4008, Sher-e Bangla Hall, BUET