Abstract:
Despite many building
s
have fire fighting systems installed in them; many people are
still
losing their lives and properties due to fire accidents
. In this research, an automatic cost
effective
device
for the detection and control of fire has been designed and constructed. The
system has an additional f
eature of sending signal to a
pump/
sprinkl
er through a relay. It is
made up of two senso
rs, microcontroller
, buzzer and a controlled fire fighting equipment
(pump/sprinkler)
.
LM 35 IC has been used as temperature sensor while MQ
-
2 gas sensor has
been used as smoke sensor. All sensors are
connected
to
the microcontroller
through an
input/output port. The controlling
software for the whole system was
designed in C
programming language. The popular
high performance, low power 8
-
bit microcontroller
from
the AVR family microcontrollers was used. The sys
tem was finally tested by introducing fire
parameters (smoke and temperature) close to the detectors. When the parameters go above
the set level in the detectors, audio alarm,
LED indicator and pump/sprinkler were
activated.
The measured temperature of the
system was compared with the reference temperature. The
result showed that there was a mean deviation of 1.550C between the measured values and
reference values which served as the control.
