基于AT89C52的煙霧報警器研究與設計

電子論文編號:JD1137  論文字數:14631,頁數:25 附開題報告

基于AT89C52的煙霧報警器研究與實現             

目錄
摘要 2
關鍵詞 2
Abstract 2
Key words 2
緒論 3
1煙霧報警器的發(fā)展與現狀及本文的工作 3
1.1火災探測技術 3
1.2火災探測器的發(fā)展趨勢 3
1.3論文研究的目的及意義 3
1.4本文主要工作 4
2系統總體設計方案 4
2.1任務分析 4
2.2總體方案設計 4
2.3系統基本工作過程 5
3系統硬件實現 5
3.1主控電路設計 5
3.1.1 AT89C52芯片介紹 5
3.1.2主機硬件電路設計 7
3.2自動撥號和錄放語音電路設計 8
3.2.1電路原理及組成 8
3.2.2 MT8880特點 8
3.2.3 ISD1420芯片介紹 10
3.3鍵盤電路設計 11
3.4 LCD1602芯片介紹 11
3.5  NIS-09煙霧傳感器介紹 12
3.6 A/D轉換器 13
4仿真設計與調試 15
4.1編程KEIL環(huán)境介紹 15
4.2程序流程 16
4.2.1報警主程序 16
4.2.2撥號子程序 16
4.3硬件調試 17
4.4實物圖片 18
5結束語 19
5.1結論 19
5.2展望 19
致謝 19
參考文獻： 20
附錄： 20

摘要：隨著現代家庭用火、用電量的增加，家庭火災發(fā)生的頻率越來越高。煙霧報警器也隨之被廣泛應用于各種場合。本設計是利用單片機結合傳感器技術而開發(fā)設計了這一遠程電話報警系統。該設計以AT89C52單片機為MCU，用EEPROM存儲器存儲電話號碼，采用雙音多頻芯片MT8880作為撥號芯片。當探測器檢測到警情的時候，就會向單片機發(fā)出中斷請求，再由單片機控制電話接口電路，實現模擬摘機，通過DTMF撥號電路實現自動撥號，并由語音電路通過電話完成播放預先錄制好的語音信息，實現語音報警。并且用戶可通過鍵盤設置、更改自動撥打的電話號碼。
關鍵詞：單片機；自動報警系統；雙音多頻芯片

The Study and Design of Automatic Dial-up Module of Smoke Intelligent Alarm System On ATM89C52
Student majoring in Automation   
 Tutor    
Abstract：With the modern home with fire, electricity consumption increases, the frequency of home fires is getting higher and higher. Smoke detectors have also been widely used in various occasions. This design is combined with the use of single-chip sensor technology development and design of the smoke alarm system.It uses AT89C52 single-chip as MCU, EEPROM memorizer to store telephone number and DTMF chip MT8880 as dial-up chip. When danger exists, the detector will give the interrupt request to the single-chip, and then simulation of extraction machine will be achieved by single-chip control of telephone interface circuit. Automatic dial-up will be carried out by DTMF dial-up circuit. The pre-recorded voice information will be played by the voice circuit so as to achieve voice alarm. And the users can set and change the automatic dialed telephone numbers by keyboard. It is convenient and flexible.
Key words:SCM；Automatic alarm system；Mt8880