本科毕业生外文文献翻译
学生姓名：**
******
所在学院：信息技术学院
专 业：电气工程及其自动化
中国·大庆
2012年 5 月
Automatic fire alarm system
The traditional electron safe alarm system mainly is through the nsor automatic detection, produces the alarm, nds out the alarm from the scene or reports to the police through the special electric cable near distance, thus caus people's vigilance. Through many years rearch and the development, the prent alarm apparatus may say is the class is multitudinous. As a result of the alarm apparatus rapid development and the social each domain anxious need, can the application domain be more and more many, specially is rapidly develops in the civil domain.
In recent years, the infrared alarm apparatus already became reports to the police a domain hot spot, becau it ud was not the obviously infrared acquisition, there for had the hiding to be good, characteristic and so on curity. Theinfrared nsor is different according to the mechanism may divide into the light survey and the hot survey. The light acquisition nsor is us the photon effect the infrared acquisition aid. This kind of nsor speed of respon quick, the nsitivity high, the examination characteristic is good, but needs to cool, us not conveniently. Moreover the component examination nsitivity and the infrared wave length concern. The hot acquisition nsor is us hotly
releas the electricity effect the infrared acquisition aid. After receives the goal the infrared radiation temperature increment, the temperature elevates caus the nsor interior certain physical quantities changes, through examination physical quantity change definite infrared emission. This kind of nsor works under the room temperature condition, examination nsitivity also very high, speed of respon also very quick, moreover has nothing to do with the infrared emission wavelength, may survey the power only to receive the background radiation the limit, the application is very convenient. This article designs is the passive form hotly releas the electricity infrared acquisition aid. In the article mainly elaborated has hotly relead the electricity the principle, hotly releas content and so on many alarm circuit which the electric detector the characteristic, the BISS0001 signal processor, 555 timers compod. Finally designed completes has hotly relead the electricity infrared detection alarm apparatus the hardware electric circuit.
With the modern family u of fire, electricity consumption increas, 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 prence 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.
For the prevention of domestic fires, reducing the fire loss have practical significance .
In the modern urban family, becau of lot of people do not understand common n home curity caud by fire, so that the happy family Goog ruined blink of an eye, and some lead to destruction, but the event of houhold fires, improper disposal, alarm delay is caud so that people should get to know more about the main caus of houhold fires, master to prevent the fire of knowledge and in ca of fire to protect his or her own way, timely elimination of
The United Kingdom each year more than 50000 families of rious fires, most of them fire casualties and significant loss of houhold asts, and some result in the neighbors, more heavy fire loss. Investigate the caus of fire in time, the vast majority of home fires happen parties said that the fire always feel that things are other people with their o
wn far away, did not think this will happen even in the top of his head.
Home fires are the main reason for negligent not to take timely preventive measures .In some of our large and medium-sized cities, almost every day family fires, fire prevention is so each family must always pay attention to. If your home bad on the actual situation in advance to take simple fire prevention measures, a number of tragedies are entirely avoidable.
Automatic fire alarm system is in order to inform the early detection of fire, and take effective measures to control and fight fires, and t in a building or other place of an automatic fire facilities, is that people with a powerful tool to fight the fire. Fire alarm system, fire detectors generally, regional centralized alarm alarm and composition; also be required under the project with various fire-fighting facilities and communication devices linked to form a central control system. From automatic alarm, automatic fire fighting, evacuation guidance, system process shows that, fire up a complete file management, fire control system.
Fire detectors are fire detection devices, as in the stage of fire will produce smoke with high temperature flame cells. The smoke, heat and light into electrical signals through the detector alarm or automatic fire extinguishing system to start fighting the fire in time. Area where the floor of alarm detector can nd the signal into sound and light alarm, and fire on the screen showing the room number; while also monitoring the concentration of certain floors of alarm (if the monitor is located in the building fire Control Center) output signal or control automatic fire extinguishing system. Concentration of alarm signal is received by way of sound and light show, and the screen also shows the specific fire floor and room number, the plane stopped taking the first alarm clock to record the timing, u of the machine-specific phones, but also quickly to the fire alarm to give directions and. In addition, you can control the fire extinguishing system or signal transmission to the fire control room.
