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1、本科畢業(yè)生外文文獻翻譯 學生姓名:*指導教師:孟潔所在學院:信息技術(shù)學院專 業(yè):電氣工程及其自動化中國·大慶2012年 5 月automatic fire alarm systemthe traditional electron safe alarm system mainly is through the sensor automatic detection, produces the alarm, sends out the alarm from the scene or reports to the police through the special electric cab
2、le 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 apparatus rapid development and the social each domain anxious need, can the application domain be more a
3、nd 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, because it used was not the obviously infrared acquisition, there for had the hiding to be good, characteristic and so on security. t
4、heinfrared 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 infrared acquisition aid. this kind of sensor speed of response quick, the sensitivity high, the examination characteristic is goo
5、d, but needs to cool, uses not conveniently. moreover the component examination sensitivity and the infrared wave length concern. the hot acquisition sensor is uses hotly releases the electricity effect the infrared acquisition aid. after receives the goal the infrared radiation temperature incremen
6、t, the temperature elevates causes the sensor interior 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 qui
7、ck, 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 releases the electricity infrared acquisition aid. in the article mainly e
8、laborated has hotly released the electricity the principle, hotly releases content and so on many alarm circuit which the electric detector the characteristic, the biss0001 signal processor, 555 timers composed. finally designed completes has hotly released the electricity infrared detection alarm a
9、pparatus 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-stric
10、ken 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 losses have practical significance .
11、in the modern urban family, because of lot of people do not understand common sense home security caused by fire, so that the happy family goog ruined blink of an eye, and some lead to destruction, but the event of household fires, improper disposal, alarm delay is caused so that people should get t
12、o know more about the main causes of household fires, master to prevent the fire of knowledge and in case of fire to protect his or her own way, timely elimination of the united kingdom each year more than 50000 families of serious fires, most of them fire casualties and significant loss of househol
13、d assets, and some result in the neighbors, more heavy fire losses. investigate the causes 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 own far away, did not think this will happen even in the top of his head.
14、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 based on the actual situation in advance to take simple fire
15、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 set in a building or other place of an automatic fire facilities, is that people with a powerfu
16、l 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 fi
17、ghting, 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 detec
18、tor alarm or automatic fire extinguishing system to start fighting the fire in time. area where the floor of alarm detector can send 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 monit
19、or 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
20、 to record the timing, use 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.automatic fire alarm system is by the trigger devices, fire alarm, fire ala
21、rm devices and other auxiliary functions of the device with the composition of a button fire alarm system fire alarm system. it can fire early stages of burning smoke, heat and light radiation and other physical quantities, by temperature. photographic and other smoke and fire detectors into electri
22、cal signals, transmitted to the fire alarm controller, and also shows the site of the fire, the fire record of the time. general fire alarm system and automatic sprinkler system, fire hydrant systems, smoke control systems, ventilation systems, air conditioning system, fire doors, fire shutter, smok
23、e screen and other related equipment interaction, automatically or manually issue commands to start the corresponding device.(a) the trigger device of the trigger devices in automatic fire alarm system, automatic or manual fire alarm signal devices generate called trigger conditions, including fire
24、detectors and manual fire alarm button. fire detector is able to fire parameters (smoke, temperature, flame radiation, gas concentration, etc.) response, and automatically generate a fire alarm signal devices. fire response parameters according to different fire detectors into heat detectors, smoke
25、detector, sensitive fire detectors, combustible gas detectors and fire detectors five basic types of composite. different types of fire detectors for different types of fires and different places. manual fire alarm button fire alarm signal generated manually start the automatic fire alarm system dev
26、ices, automatic fire alarm system is an indispensable component of the.(b) fire alarm installationthe fire alarm device in automatic fire alarm system to receive, display and transmit fire alarm signals, and can send control signals and control functions with other auxiliary equipment as the fire al
27、arm device instructions. fire alarm control is one of the most basic kind. charged with the fire alarm control fire detectors provide a stable working power; detector and the working status of the system itself; the reception, conversion, processing a warning of fire detectors;export; jinxing sound
28、and light alarm; knowledge specific location and alarm time; the same time supporting the implementation of appropriate control and many other tasks. fire alarm system is a core component. in the fire alarm devices, some devices such as break, regional monitors, fire shows and other functions can no
29、t complete disc alarm device, which can be regarded as the evolution of fire alarm controller or supplement. under certain conditions applied, and the fire alarm device fire alarm control belong.the basic function of fire alarm control are: the main power, backup power automatically converted, stand
30、by power charge function, power failure monitoring function, power functions working status indicator, power supply for the detector circuit function, control sensors or system failures, sound and light alarm, fire sound, light alarm, fire alarm and memory function, clock function unit, with priorit
31、y being given fault function fire alarm, sound alarm sound audible alarm mute and again. (c) fire control equipment fire control equipment in automatic fire alarm system, when receiving the fire alarm, automatically or manually start the related fire-fighting equipment and display devices of their s
32、tate, known as the fire control equipment. include fire alarm control, automatic fire extinguishing system control device, fire hydrant system control devices, smoke exhaust system and air conditioning and ventilation system control device, normally open fire doors, fire shutter control device, the
33、lift back down control equipment, and fire emergency radio, fire alarms, fire communications equipment, fire evacuation signs and emergency lighting control devices, control devices in some or all. fire control equipment normally installed in the fire control center to facilitate the implementation
34、of centralized control. while others set fire control equipment, fire fighting equipment is located in the charged field, but its actions must be returned fire control signal, combined with the implementation of centralization and decentralization of control. (d) electrical source fire alarm system
35、power supply electrical equipment belonging to the fire, the main power should be in the fire power, standby power use of battery. in addition to fire alarm system power controller, power supply, but also related to the system for the fire control equipment such as power supply.火災自動報警系統(tǒng)傳統(tǒng)電子安全報警系統(tǒng)主要是
36、通過傳感器自動檢測,產(chǎn)生報警信號,從現(xiàn)場發(fā)出報警信號或通過專門電纜近距離報警,從而引起人們的警覺。通過多年的研究和發(fā)展,現(xiàn)在的報警器可以說是門類眾多。由于報警器的飛速發(fā)展和社會各個領(lǐng)域的急切需要,能應用的領(lǐng)域越來越多,特別是在民用領(lǐng)域更是急速發(fā)展。近年來,紅外線報警器已經(jīng)成為報警領(lǐng)域的一個熱點,由于其采用的是不可見的紅外線探測,所以具有隱蔽性好、安全等特點。紅外線傳感器按機理不同可以分為光探測型和熱探測型。光探測傳感器是利用光子效應的紅外探測器。這類傳感器響應速度快、靈敏度高、檢測特性好,但需要冷卻,使用不方便。而且器件的檢測靈敏度與紅外波長有關(guān)。熱探測傳感器是利用熱釋電效應的紅外探測器。在接
37、收到目標的紅外輻射后溫度升高,溫度的升高又引起傳感器內(nèi)部某些物理量的變化,通過檢測物理量的變化來確定紅外線輻射。這類傳感器在室溫條件下工作,檢測靈敏度也很高,響應速度也很快,而且與紅外線輻射波長無關(guān),可探測功率只受背景輻射的限制,應用很方便。本文設(shè)計的是被動式熱釋電紅外探測器。文中主要論述了熱釋電的原理、熱釋電探測器的特性、biss0001傳感信號處理器、555定時器組成的多諧振蕩報警電路等內(nèi)容。最后設(shè)計完成了熱釋電紅外探測報警器的硬件電路。隨著現(xiàn)代家庭用火、用電量的增加,家庭火災發(fā)生的頻率越來越高。家庭火災一旦發(fā)生,很容易出現(xiàn)撲救不及時、滅火器材缺乏及在場人驚慌失措、逃生遲緩等不利因素,最終
38、導致重大生命財產(chǎn)損失。探討家庭火災的特點及防火對策, 對于預防家庭火災,減少火災損失具有現(xiàn)實意義。在現(xiàn)代城市家庭里,許多人因不懂家庭安全常識引起火災事故,使好端端的幸福家庭轉(zhuǎn)眼間毀于一旦,有的導致家破人亡,而且一旦發(fā)生居民家庭火災,處置不當、報警遲緩,是造成人員受害的原因。人們應該積極了解家庭火災的主要起因,掌握防止發(fā)生火災的知識和萬一發(fā)生火災時保護自己的方法,及時消除隱患。 英國每年發(fā)生50000起以上的嚴重家庭火災,其中大部分火災造成人員傷亡和重大的家庭財產(chǎn)損失,有的還連累左鄰右舍,火災損失更加慘重。在調(diào)查火災起因的時候,絕大多數(shù)發(fā)生火災家庭的當事人說,以前總覺得火災是人家的事情,與自己離
39、得很遠,沒有想到這一次竟然會發(fā)生在自己的頭上。 家庭火災的主要原因是麻痹大意,沒有及時采取預防措施。在我國的一些大中城市,幾乎每天都發(fā)生家庭火災,所以防火是每個家庭必須時刻注意的問題。假如能根據(jù)您家的實際情況預先采取簡單的防火措施,一些悲劇是完全可以避免的?;馂淖詣訄缶到y(tǒng)是人們?yōu)榱嗽缙诎l(fā)現(xiàn)通報火災,并及時采取有效措施,控制和撲滅火災,而設(shè)置在建筑物中或其它場所的一種自動消防設(shè)施,是人們同火災作斗爭的有力工具。火災報警系統(tǒng),一般由火災探測器、區(qū)域報警器和集中報警器組成;也可以根據(jù)工程的要求同各種滅火設(shè)施和通訊裝置聯(lián)動,以形成中心控制系統(tǒng)。即由自動報警、自動滅火、安全疏散誘導、系統(tǒng)過程顯示、消防檔案管理等組成一個完整的消防控制系統(tǒng)?;馂奶綔y器是探測火災的儀器,由于在火災發(fā)生的階段,將伴隨產(chǎn)生煙霧、高溫格火光。這些煙、熱和光可以通過探測器轉(zhuǎn)變?yōu)殡娦盘枅缶蚴棺詣訙缁鹣到y(tǒng)啟動,及時撲滅火災。區(qū)域報警器能將所在樓層之探測器發(fā)出的信號轉(zhuǎn)換為聲光報警,并在屏幕上顯示出火災的房間號;同時還能監(jiān)視若干樓層的集中報警器(如果監(jiān)視整個大樓的則設(shè)于消防控制中心)輸出信號或控制自動滅火系統(tǒng)。集中報警是將接收到的信號以聲光方式顯示出來,其屏幕上也具體顯示出著火的樓層和房間號,機上停走的時鐘記錄下首次報警時間性,利用本機專用電話,還
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