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Enhanced Smoke Detection System with
EMERGENCY LIGHTSand
REMOTE MESSAGING SYSTEM
Submitted By:09061720906175090618209061840906187
Objective
how ca
n we
STOP
these?
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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Series 1Column2 Series 1
Column1Column2
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