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毕业设计
智能安防报警系统设计
附程序源代码
摘要
随着信息技术的飞速发展以及人们生活水平的大幅度提高，人们对居住环境要求日渐增高，希望住宅不仅便利、舒适而且更安全。本文所要介绍的智能防盗报警系统，正是在智能住宅蓬勃发展的背景下，为了满足用户对安全的强烈要求而设计的。
智能化住宅防盗报警系统首要任务是保护住宅的防盗安全，通过运用多传感器探测、双音多频远程数据传输（DTMF）及计算机通信等技术实现智能报警。自动盗情检测是由红外探测与微波探测器构成的双鉴式探测器实现的。当防盗探测器检测到险情的时候，向单片机发出中断申请，再由单片机控制电话接口电路，实现模拟摘机，自动拨打相关部门的电话号码（如小区管理中心电话）进行语音报警。
本系统通过密码来识别主人身份，系统开启后只有输入正确的密码才能关闭系统。该系统的设计可有效的降低误报警率。
关键词：智能报警系统防盗自动拨号语音报警
The Intelligent Alarm System for Residential Area
Abstract
With the rapid development of information technology and great improvement of standard of people’s living. People have increased the requirement for living conditions, they hope not only residential is facilitate and comfortable but also more secure. Intelligent alarm system is designed just based on this intelligent residential background in order to satisfy user strong requirements for security.
The primary task of intelligent anti-theft alarm system is protect the residential anti-theft security. Through using multi-sensor detection, dual tone multi-frequency long-distance data transmission (DTMF) as well as computer and communications technology, the design can realize intelligent alarm. The alarm situation is automatically detected by the double inspect detector that is consisted of the infrared detector and microwave detector to achieved. When the anti-theft detector detect dangerous situations, the interruption will application for single-chip, and then telephone interface circuit is controlled by the single-chip to achieve analog picking machine. The system can dial the telephone number of the relevant departments (such as district management center phone) to voice alarm.
The system is identified owner by password, only entering the correct password the system can be shut down. Design of the system can reduce the false alarm rate effectively.
Key words: intelligent alarm system Anti-theft automatic dial-up voice alarm
1 引言 (1)
1.1 课题背景 (1)
1.2 国内外研究概况 (1)
1.3 论文的主要研究内容 (3)
2 智能报警系统总体方案设计 (5)
2.1 方案提出 (5)
2.2 方案比较及确定 (6)
2.2.1 单片机的选择 (6)
2.2.2 传感器的选择 (6)
3 系统硬件设计 (10)
3.1 最小系统的设计 (10)
3.2 防盗探测器电路设计 (11)
3.2.1 热释电红外线探测器 (11)
3.2.1.1 热释电效应 (11)
3.2.1.2 热释电红外传感器结构 (12)
3.2.1.3 热释电红外探测器基本原理 (13)
3.2.1.4 热释电红外探测器电路设计 (14)
3.2.2 微波探测器 (16)
3.2.2.1 微波探测器原理 (16)
3.2.2.2 探测器电路设计 (17)
3.3 串行 EEPROM-X25045 (18)
3.4 自动拨号及语音报警电路设计 (19)
3.4.1 拨号电路 (19)
3.4.1.1 MT8888芯片简述 (20)
3.4.1.2 芯片工作方式 (21)
3.4.1.3 DTMF拨号原理 (21)
3.4.1.4 拨号芯片及外围电路 (22)
3.4.2 语音电路 (23)
3.4.2.1 ISD1420芯片简述 (23)
3.4.2.2 芯片工作原理 (24)
3.4.2.3 芯片工作模式 (25)
3.4.2.4 语音芯片及外围电路 (25)
3.5 电话接口电路 (26)
3.6 键盘与密码显示电路设计 (27)
