ABSTRACT
Fire is defined as burning out of control in time and space caused by disasters. In all
sorts of disaster, fire is one of the most often and most widely disaster to public safety and
social development. Humans can use and control on fire, is an important symbol of
civilization progress. So the history of using fire links with that of fighting with fire, when
people use fire, they always summarize unceasingly the rule of fire, as far as possible to
reduce fire and the damage to human.
With the arrival of the "information age", as a means of obtaining information - sensor
technology, has gotten significant progress, its application field is more and more widely,
the demand is higher and higher. As an important part of the harmonious society and the
direction of development, family CO safety testing, coal gas safety testing and other
flammable gas monitoring technology has become one of the important symbols of
measuring a national science and technology development level. For this, understanding
and mastering the basic structure of sensor, working principle and characteristic is very
important.
For the typical representative of the twenty-first century transmission technology
transmission is wireless transmission technology, high stability, low cost is becoming an
important transmission tool, has been widely applied. Based on the above reason and
combining theory with practice, considering ATmegal-16 microcontroller as the core, and
applying wireless transmission module, sensor module, display module and alarm module
to make a fire alarm. This work has good points of high precision of real-time monitoring,
good stability, low power work in etc, mainly can be used in family, also be cited in
factories, mines etc .
Keywords: sensors；Atmegal – 16； wireless transmission；alarm
