【正文】 ympic diving platform. Below, the Earth bees the concrete bottom of a swimming pool that he wants to land on, but not too hard. Still, he39。t start planning... Those years, those days of do, finally, like youth, will end in our life. 此刻，天空是陰暗的，空氣里有著剛下過雨之后的清新因子。想要的，不想要的，界限明確，好像沒有什么可以撼動自己。 Junior high school, thought to have a crush on just means that the real growth, but over the past three years later, his writing of alumni in peace, suddenly found that isn39。s governing body, has also ordered an immediate investigation into the referee39。t appealed against the disciplinary action your employer has taken against you. However, if you win your case, the tribunal may reduce any pensation awarded to you as a result of your failure to appeal. Remember that in most cases you must make an application to an employment tribunal within three months of the date when the event you are plaining about happened. If your application is received after this time limit, the tribunal will not usually accept it. If you are worried about how the time limits apply to you, take advice from one of the anisations listed under Further help. Employment tribunals are less formal than some other courts, but it is still a legal process and you will need to give evidence under an oath or affirmation. Most people find making a claim to an employment tribunal challenging. If you are thinking about making a claim to an employment tribunal, you should get help straight away from one of the anisations listed under Further help. If you are being represented by a solicitor at the tribunal, they may ask you to sign an agreement where you pay their fee out of your pensation if you win the case. This is known as a damagesbased agreement. In England and Wales, your solicitor can39。 本文研制的用于小型防火單位的語音數(shù)字聯(lián)網(wǎng)火災(zāi)報警器具有以下特點： (1)能對室內(nèi)煙霧 (CO2， CO)及溫度突變進行報警 (聲光報警 )。報警子程序流程圖如圖 8所示。 首先要給傳感器預(yù)熱三分鐘，因為 MQ2 型半導(dǎo)體電阻式煙霧傳感器在不通電存放一段時間后，再次通電時，傳感器不能立即正常采集煙霧信息，需要一段時間預(yù)熱 [10]。單片機 STC12C5410AD 的 18腳 ()、 12 腳 ()、 13 腳 ()，控制輸出的狀態(tài)指示燈。所以本設(shè)計中的前置放大電路采用 LM324 作為電路的運算放大器。當(dāng)傳感器加熱絲 或電纜線和傳感器斷線或接觸不良時，進行故障報警，發(fā)出聲光報警信號。在實際工程應(yīng)用中，系統(tǒng)的組成是多種多樣的，設(shè)備量的多少、設(shè)備種類都會有很大的不同。 ，一般制成差溫和定溫兩種形式，定溫式是當(dāng)環(huán)境溫度上升達到設(shè)定溫度時，定溫部件立即動作，發(fā)出報警信號；差溫式是當(dāng)環(huán)境溫度急劇上升，其溫升速率（ ℃ /min）達到或超過探測器規(guī)定的動作溫升速率時，差溫部件立即動作，發(fā)出報警信號。它利用激光方向性強、亮度高及單色性和相干性好的特點。在無煙情況下，光源發(fā)出的光通過透鏡聚成光束，照射到光電元件上，并將其轉(zhuǎn)換成電信號，使整個電路維持在正常狀態(tài)，不發(fā)出報警。內(nèi)電離室即補償室，是密封的，煙不易進入；外電離室即檢測室，是開孔的，煙能夠順利進入。 （ 3）感溫探測器（包括定溫式和差溫式）。因此，自動報警及消防聯(lián)動的設(shè)計及設(shè)備選型顯得尤為重要。s demand for antitheft, antirobbery, fire security equipment has greatly increased. For accidents such as theft, robbery, fire, gas leak detection and alarm system, and its demand is increasing. AT89C51 microcontroller, optional integrated temperature sensor the AD590 and gas sensor TGS202 as the sensing element, the use of multisensor information fusion technology, developed for small flats fire alarm voice digital worked alarm. SCM now has been more and more widely used in many fields of smart instrumentation, industrial control, daily life, it can be said that the application of SCM has perated into human life, in every corner of the work, which shows that it is work, and each of us life is closely related to, and also shows that each of us may have and the opportunity to use a microcontroller to transform you around the instruments, products, work and living environment. Keyword: Microcontroller。針對偷盜、搶劫、火災(zāi)、煤氣泄漏等事故進行檢測和報警的系統(tǒng)，其需求也越來越高。 fire alarm 目 錄 摘要 ???????????????????????????????????? 1 第 一 章、自動報警器的 簡介和產(chǎn)生 ????? ????????????????? ? 5 自動報警器的簡介 ??????????????????? ? ?????? 5 自動報警器的產(chǎn)生 ????????????? ??? ?????????? 5 第 二 章、 火災(zāi)探測