基于AT89C52的烟雾报警器研究与设计

电子论文编号:JD1137  论文字数:14631,页数:25 附开题报告

基于AT89C52的烟雾报警器研究与实现             

目录
摘要 2
关键词 2
Abstract 2
Key words 2
绪论 3
1烟雾报警器的发展与现状及本文的工作 3
1.1火灾探测技术 3
1.2火灾探测器的发展趋势 3
1.3论文研究的目的及意义 3
1.4本文主要工作 4
2系统总体设计方案 4
2.1任务分析 4
2.2总体方案设计 4
2.3系统基本工作过程 5
3系统硬件实现 5
3.1主控电路设计 5
3.1.1 AT89C52芯片介绍 5
3.1.2主机硬件电路设计 7
3.2自动拨号和录放语音电路设计 8
3.2.1电路原理及组成 8
3.2.2 MT8880特点 8
3.2.3 ISD1420芯片介绍 10
3.3键盘电路设计 11
3.4 LCD1602芯片介绍 11
3.5  NIS-09烟雾传感器介绍 12
3.6 A/D转换器 13
4仿真设计与调试 15
4.1编程KEIL环境介绍 15
4.2程序流程 16
4.2.1报警主程序 16
4.2.2拨号子程序 16
4.3硬件调试 17
4.4实物图片 18
5结束语 19
5.1结论 19
5.2展望 19
致谢 19
参考文献： 20
附录： 20

摘要：随着现代家庭用火、用电量的增加，家庭火灾发生的频率越来越高。烟雾报警器也随之被广泛应用于各种场合。本设计是利用单片机结合传感器技术而开发设计了这一远程电话报警系统。该设计以AT89C52单片机为MCU，用EEPROM存储器存储电话号码，采用双音多频芯片MT8880作为拨号芯片。当探测器检测到警情的时候，就会向单片机发出中断请求，再由单片机控制电话接口电路，实现模拟摘机，通过DTMF拨号电路实现自动拨号，并由语音电路通过电话完成播放预先录制好的语音信息，实现语音报警。并且用户可通过键盘设置、更改自动拨打的电话号码。
关键词：单片机；自动报警系统；双音多频芯片

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