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Automatic fire alarm system
The traditional electron safe alarm system mainly is through the sensor
automatic detection, produces the alarm, sends out the alarm the scene or
reports to the police through the special electric near distance, thus
causes people's vigilance. Through many years research and the development,
the present alarm apparatus may say is the class is multitudinous. As a
result of the alarm apparatchik development and the social each domain
anxious need, can application domain be more and more many, specially is
overdevelops in the civil domain.
In recent years, the infrared alarm apparatus already became reports to
the police a domain hot spot,because it used was not the obviously infrared
acquisition, Hereford the hiding to be good, characteristic and so on
security. Infrared sensor is different according to the mechanism may
divide into the light survey and the hot survey. The light acquisition
sensor is uses the photon effect the acquisition aid. This kind of sensor
speed of response quick, sensitive high, the examination characteristic is
good, but needs cool, uses not conveniently. Moreover the component
examination sensitivity and the infrared wave length concern. The hot
acquisition is uses hotly releases the electricity effect the acquisition
aid. After receives the goal the infrared misinterpretation increment, the
temperature elevates causes the censorial certain physical quantities
changes, through examination physical quantity change definite infrared
emission. This kind of sensor works under the room temperature condition,
examination sensitivity also very high, speed of response also very
quick,moreover has nothing to do with with the infrared emission wavelength,
may survey the power only to receive the background irradiation limit, the
application is very convenient. This article designs atheist passive form
hotly releases the electricity infrared acquisition aid. In the article
mainly elaborated has hotly released electrician the principle, hotly
releases content and so on Malayalam circuit which the electric detector