【正文】 ............................................... 13 3 系統(tǒng)軟件設(shè)計(jì) ................................................................................................................ 14 數(shù)據(jù)采集子程序 .................................................................................................. 14 火災(zāi)判斷程序 ...................................................................................................... 15 電話報(bào)警流程設(shè)計(jì) .............................................................................................. 15 MT8880 的數(shù)據(jù)發(fā)送程序設(shè)計(jì) ............................................................................ 17 MT8880 數(shù)據(jù)接收程序設(shè)計(jì) ................................................................................ 19 II 4 仿真與調(diào)試 .................................................................................................................... 21 結(jié)論 .................................................................................................................................... 23 參 考 文 獻(xiàn) ...................................................................................................................... 24 致 謝 ................................................................................................................................ 25 III 插圖索引 圖 1 報(bào)警電路方框圖 ....................................................................................................... 3 圖 2 AD590 應(yīng)用電路圖 .................................................................................................... 4 圖 3 TGS202 應(yīng)用電路圖 ................................................................................................... 4 圖 4 ISD1420 引腳 ............................................................................................................ 5 圖 5 AT89C51 引腳 ............................................................................................................ 7 圖 6 MT8880 接收電路連線圖 ........................................................................................... 9 圖 7 MT8880 發(fā)送電路連線圖 ......................................................................................... 10 圖 8 光報(bào)警電路 .............................................................................................................11 圖 9 信號(hào)音檢測(cè)電路 ......................................................................................................11 圖 10 總體電路圖 ........................................................................................................... 13 圖 11 報(bào)警流程圖 ........................................................................................................... 16 圖 12 MT8880 的數(shù)據(jù)發(fā)送圖 ........................................................................................... 17 圖 13 MT8880 的數(shù)據(jù)接收流程圖 .................................................................................... 19 圖 14 故障信號(hào)仿真圖 .................................................................................................... 21 圖 15 火災(zāi)信號(hào)仿真圖 .................................................................................................... 21 圖 16 正常信號(hào)仿真圖 .................................................................................................... 22 圖 17 異常信號(hào)仿真圖 .................................................................................................... 22 IV 基于 8051 火災(zāi)自動(dòng)報(bào)警系統(tǒng)的設(shè)計(jì) 摘 要 本文設(shè)計(jì)了一種基于公用電話網(wǎng) ,利用單片機(jī) 805 DTMF信號(hào)收發(fā)芯片 MT8880、集成語音芯片 ISD1420, 集成溫度傳感器 AD590 和氣體傳感器 TGS202等 ,利用多傳感器信息融合技術(shù) ,完成語音報(bào)警的實(shí)用、可靠的單片機(jī)語音自動(dòng)報(bào)警系統(tǒng) ,著重講述了該系統(tǒng)的組成形式及工作原理。實(shí)踐表明 ,單片機(jī) 技術(shù)在系統(tǒng)報(bào)警和 其它一些自動(dòng)控制領(lǐng)域中有著廣泛的應(yīng)用前景。 【關(guān)鍵詞】 單片機(jī) 傳感器 數(shù)據(jù)處理 報(bào)警 The Design of Automatic Fire Alarm System Based on 8051 Abstract This paper design a method that use single chip puter and digital voice chip ISD1420 to realize remote voice alarm, gives out the hardware structure and software of system, Based on the singlechip microputer AT89C51, dial chip MT8880 and speech chip ISD1420,temperature sensor AD590 and gas sensor TGS202 are used, and the multisensors information processing method is adopted . Practice the enunciation, The singlechip microputer technique has the extensively applied foreground in system alarm and other automatic control realm. This system can automatically to monitor the points which are acute to temperature. It can also send out alarm, show the points and record the occurring time when a fire has broke out. 【 Key words】 MCU Transducer Data Process Alarm 1 緒論 概述 無線火災(zāi)傳感器硬件和軟件平臺(tái)的設(shè)計(jì)對(duì)于整個(gè)系統(tǒng)的開發(fā)與應(yīng)用至關(guān)重要，作為整個(gè)系統(tǒng)的底層支持，其必然向微型化、高度集成化、網(wǎng)絡(luò)化、節(jié)能化、智能化的方向發(fā)展，近幾年，隨 著計(jì)算機(jī)成本下降和微處理器體積縮小，開發(fā)和構(gòu)造火災(zāi)智能無線報(bào)警系統(tǒng)將有廣闊的應(yīng)用前景。隨著智能樓宇技術(shù)應(yīng)用的迅速發(fā)展，商業(yè)市場(chǎng)對(duì)火災(zāi)報(bào)警器的需求不斷增長(zhǎng)，目前主要使用的是智能型總線制分布式計(jì)算機(jī)系統(tǒng)的火災(zāi)報(bào)警系統(tǒng)，雖然在系統(tǒng)安裝方面比過去大大方便，但仍然不能滿足現(xiàn)代需要，其安裝成本約占設(shè)備成本的 33%～ 70%。 有關(guān)資料統(tǒng)計(jì)表明：凡是 安裝了火災(zāi)自動(dòng)報(bào)警系統(tǒng)的場(chǎng)所，發(fā)生了火災(zāi)一股地說都能及早報(bào)警，不會(huì)釀成重大火災(zāi)。德國(guó)、日本、美國(guó)等發(fā)達(dá)國(guó)家對(duì)無線火災(zāi)自動(dòng)報(bào)警系統(tǒng)的研究投入大量人力、財(cái)力。無線傳感器網(wǎng)絡(luò)(WSN)綜合了微電子技術(shù)