Fire Alarm EEE.pptx a fire alarm system project proposal

1. BANGLADESH UNIVERSITY OF BUSINESS AND TECHNOLOGY
ELECTRIC CIRCUIT DC LAB PRESENTATION
SPRING 2024
Department of Computer Science and
Engineering
Supervised by
Dipta Kumar Ghoshe

2. PROJECT- FIRE INDICATOR
Yeamin Sheikh 20234103410
Mahin Mohosin Beeva 20234103413
Md. Delower Hossin Dinar 20234103414
Moinul Islam Shakib 20234103417
Md. Masum Billah 20234103422
Anika Bushra Ela 20234103447
Mamunur Bashar 20234103448

3. Required components for the fire
detector alarm circuit :
 BC547 Transistor (NPN)
 Infrared Receiver LED
 4.7-ohm Resistor
 LED 5mm
 DC Buzzer
 9 volt DC supply or 9 Volt Battery
 Breadboard

4.  Working principle
 Normal condition: When there's no fire, the thermistor has high
resistance. The voltage divider formed by the thermistor and a fixed
resistor creates a specific voltage at the non-inverting input of the op-
amp. A reference voltage is applied to the inverting input. As long as
these voltages are similar, the op-amp's output remains low, and the
alarm is silent.
 Fire condition: In a fire scenario, the temperature rises, causing the
thermistor's resistance to decrease. The voltage at the non- inverting
input of the op-amp drops. If the temperature rise is significant enough,
the voltage difference between the two inputs becomes large enough
for the op- amp to switch its output to a high voltage.

5. DIAGRAM :

6. • Enhanced safety and security .
• Reach Emergency services
quickly.
• Protection of employees and
assets.
• Fire alarm are easy to use.
• Cost effectiveness.
Benefits of fire detector:

7.  Disadvantag
es:
The circuit will not work if it exposed to
sun light.
As the sun emits infrared rediation so
the IR detector LED will sense the
infrared and the circuit will remain turns
on when it is exposed to sunlight..

8. Future Outlook
The future of fire alarms looks very exciting and advanced. Smart
fire alarms will connect to the internet, letting our monitor and get
alerts on our phone. Wireless systems will connect easily with smart
homes and buildings. Better sensors will catch fires earlier by
detecting more signs of fire. Overall, fire alarms will become more
reliable, easier to use, and much better at keeping us safe.
Thank You