火災(zai)自動報警系統是設(she)置(zhi)在建筑物或其他場所中(zhong)的(de)一種(zhong)自動消(xiao)防設(she)施，能(neng)早期發(fa)現和通報火災(zai)。

火災自(zi)動報警系統(tong)通常由觸發裝置(zhi)(zhi)如(ru)火災探測(ce)器、報警裝置(zhi)(zhi)如(ru)火災報警控(kong)(kong)(kong)制(zhi)器、警報裝置(zhi)(zhi)如(ru)聲光報警器、聯(lian)動控(kong)(kong)(kong)制(zhi)裝置(zhi)(zhi)如(ru)總線控(kong)(kong)(kong)制(zhi)盤與(yu)控(kong)(kong)(kong)制(zhi)模(mo)塊、電源等(deng)組成。

工作原理(li)：在火(huo)(huo)災初期，將(jiang)燃(ran)燒產(chan)生的(de)煙霧、熱量和光(guang)(guang)輻射等物理(li)量，通過感煙、感溫和感光(guang)(guang)等火(huo)(huo)災探(tan)測器(qi)(qi)變成電信號，傳輸到火(huo)(huo)災報警控制器(qi)(qi)，信號經火(huo)(huo)災報警控制器(qi)(qi)處(chu)理(li)、分析、判斷后(hou)，以(yi)聲、光(guang)(guang)、文(wen)字等方式顯示出(chu)來并(bing)同(tong)時顯示出(chu)火(huo)(huo)災發生的(de)部位，記(ji)錄(lu)火(huo)(huo)災發生的(de)時間(jian)。

聯動(dong)(dong)(dong)控制：火(huo)(huo)(huo)災自(zi)動(dong)(dong)(dong)報警系(xi)(xi)統(tong)(tong)一般和(he)(he)預作用系(xi)(xi)統(tong)(tong)、雨(yu)淋(lin)系(xi)(xi)統(tong)(tong)、水幕(mu)系(xi)(xi)統(tong)(tong)、水噴(pen)霧(wu)系(xi)(xi)統(tong)(tong)、水炮系(xi)(xi)統(tong)(tong)、氣(qi)體滅火(huo)(huo)(huo)系(xi)(xi)統(tong)(tong)、防(fang)(fang)排煙(yan)(yan)(yan)系(xi)(xi)統(tong)(tong)、通風(feng)系(xi)(xi)統(tong)(tong)、空調系(xi)(xi)統(tong)(tong)、常開防(fang)(fang)火(huo)(huo)(huo)門、防(fang)(fang)火(huo)(huo)(huo)卷簾、擋(dang)煙(yan)(yan)(yan)垂(chui)壁、消防(fang)(fang)廣播等設備聯動(dong)(dong)(dong)。在火(huo)(huo)(huo)災情況下，控制器(qi)如在自(zi)動(dong)(dong)(dong)狀態，會自(zi)動(dong)(dong)(dong)啟(qi)動(dong)(dong)(dong)防(fang)(fang)排煙(yan)(yan)(yan)風(feng)機、停止(zhi)新風(feng)機、關閉(bi)防(fang)(fang)火(huo)(huo)(huo)閥、釋放防(fang)(fang)火(huo)(huo)(huo)門、防(fang)(fang)火(huo)(huo)(huo)卷簾以及擋(dang)煙(yan)(yan)(yan)垂(chui)壁等，也能自(zi)動(dong)(dong)(dong)啟(qi)動(dong)(dong)(dong)預作用、雨(yu)淋(lin)、水幕(mu)、水噴(pen)霧(wu)和(he)(he)水炮泵(beng)，還(huan)能在消防(fang)(fang)控制室直(zhi)接啟(qi)動(dong)(dong)(dong)消防(fang)(fang)泵(beng)和(he)(he)防(fang)(fang)排煙(yan)(yan)(yan)風(feng)機。