基于单片机和GSM模块的防火防盗毕业设计外文文献翻译

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 the characteristic,the BISSAU signal processor, 555 timers composed. Finally designed completes has hotly released the electricity infrared detection alarm apparatus the hardware electric circuit.

With the modern family use of fire, electricity consumption increases, the frequency of home fires is getting higher and higher. The family of fire, it is easy to fight does not occur promptly, the lack of fire-fighting equipment and the presence of panic-stricken people, to escape unfavorable factors, such as retardation, which eventually led to a significant loss of life and property. Explore the characteristics of the family of fire and fire prevention measures.