文档介绍：目录
摘要..............................................................................Ⅲ
引言 1
第一章: 远程智能报警器的功能与方案 2
总体设计分析 2
2
2
软件模块 3
3
电话报警 3
第二章总体设计 5
第三章硬件单元电路设计 6
6
6
6
6
信号检测电路 6
模拟摘挂机电路 7
双音调发生电路 8
电源电路 8
9
第四章软件设计单元 12
10
12
13
15
16
18
第五章产品的制作、安装与调试 20
产品的制作过程 20
硬件部分的制作 20
20
系统调试 20
第六章芯片简介 22
22
拨号芯片的简介 25
25
存储芯片AT24C02 28
总结 30
参考文献 31
致谢 32
附录1:PCB板(主板) 33
附录2:元器件清单 34
附录3:主程序 36
远程智能报警器设计制作
摘要
 本文设计的电话远程报警器是基于DTMF(双音双频信号) 传输、作为电话的附属物而设计的家庭远程报警系统。以单片机AT89C51、双音调发生器TCM5087、串行存储器AT24C02及光偶PC817为核心,通过电话线路自动拨号报警的智能电话报警器。单片机在正常情况下处于等待状态,光偶PC817不工作,从而电话处于挂机状态。当探头检测有小偷进入时,产生中断信号给单片机,延时10mS后开始执行中断程序,启动拨号电路,送中断信号给单片机,单片机输出高电平,TCM5087的16脚输出高电平,T2立刻进入导通状态,经T2后再由D0~D4转变极性后送到电话线两端,PC817的8脚从高电平跳为低电平,T1导通,继电器闭合,则此时程控交换机认为电话处于摘机状态。同时单片机从串行存储器AT24C02中读出号码自动拨号,把所有存储的号码都自动拨打一遍后自动挂机。
关键词双音多频,电话报警器,DTMF
The long range intelligence report to the police a machine
Abstract
The telephone long range of[with] this text design report to the police a machine is the family long range of the adjunct but design that deliver and Be a telephone according to the DTMF(double the sound dual-band signal) to report to the police the list slice the machine AT89 C51,double tone occurrence machine TCM5087,string saving machine in line AT24 C02 and light accidentally PC817 for core, pass the telephone circuit an au to stir number to report to the police of the intelligence telephone report to the police a list slice the machine be placed in to wait for appearance under the normal circumstance, light accidentally PC817 not work, thus the telephone be placed in to hang machine stretching forward an examination to there is burglar to into, the creation break off signal to