Abstract:
Along with the modern home with fire, electricity
consumption increases, the frequency of home fires is getting
higher and higher. The family of fire occurrence, is prone to
fighting is not timely, the lack of fire-fighting equipment
and the presence of people be confound at escape, retardation
and other adverse factors, which eventually led to a
significant loss of life and property. Home fires are the main
reason for drop one's guard, not to take timely preventive
measures. The smoke alarm is a kind of induction sensor for
detecting smoke, once the fire danger, its internal electronic
speaker will be timely to alert people.
In some large and medium-sized city in China, almost every
family fires, fire prevention is so each family must always
pay attention to the problem. If can advance to take simple
fire prevention measures according to the actual situation of
each, some tragedy could have been avoided.
This paper is the study of the smoke alarm in fire in the
meaning and role.
Mainly by the smoke sensor, temperature sensor, A/D
converter circuit, information processing module, and sound
and light alarm module.
Keywords: sensor;fire;alarm