摘要
随着科技的飞速发展，人们的工作、生活中涌现出各种各样的科技产品，其中的电子产品更是花样繁多、遍及工作、生活的方方面面。智能家居防盗报警系统是近年来发展极为迅速、应用面极广的防盗报警控制系统，它具有控制能力强、操作方便灵活、可靠性高、适应能力强的特点。
本文介绍了一款易于扩展的基于单片机的家居智能防盗报警系统, 用较低的成本实现家居的高安全性。主要由AT89C52单片机、热释电传感器、信号处理电
路、蜂鸣器语音报警电路、LED显示电路等部分组成。系统主要功能是防盗报警,它由热释电传感器作为探测器,将信号输入单片机中，判断是否有危情，若有则利用蜂鸣器报警。中断申请后再查询的方式使系统的误报率有效降低，并使系统的可靠性大为增强，因而在智能家居防盗报警系统中极具发展前景。本文给出了该家居防盗报警系统的硬件组成，阐述了系统工作方式，并给出主程序和子程序的流程图。
关键词：单片机；防盗报警；传感器
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Abstract
With the rapid development of science and technology, all kinds of products emerge in people's work and life including various electronic products. The system of intellectual home anti-theft alarm is an anti-theft alarm control system which has developed very quickly in recent years and is applied widely.This characters of the system is the enough ability to control, convenient and flexible to operate, high reliability and adaptability. This paper introduces a set of intellectual home anti-theft alarm system based on microcontroller with lower cost to achieve the high-security home environment. It mainly consists of four parts which are the AT89C52, the pyroelectric sensor, signal processing circuit, alarming circuit by buzzer,displaying circuit by LED and so on. The main function of this system is to alarm when the home is in danger. It uses the pyroelectric sensor as a detector,transports the signal into the microcontroller to tell whether the home is dangerous.If the home is in danger ,the system would alarm by buzzer. Due to the design of the inquiries of interruption before the usage of query, the false alarm rate is reduced effectively and the reliability of the system is greatly increased,which is applied widely in the anti-theft alarm system of intellectual home. The paper gives the hardware components of the system, illustrates the work way of the system, and gives the flow chart of main program and subroutine.
Key words: Microcontroller; Anti-theft Alarm; Sensor
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目录
1 绪论 (1)
1.1 智能家居防盗报警系统的国内外发展状况 (1)
1.1.1 智能家居防盗报警系统概述 (1)
1.1.2 智能家居报警系统的现状与发展趋势 (1)
1.1.3 智能家居报警系统在我国的发展情况 (2)
1.2 开发智能家居报警系统的现实意义和应用前景 (2)
1.3 研究本课题的目的及意义 (3)
1.4 本文开展的主要工作 (4)
2 系统整体方案设计 (5)
2.1 系统概述 (5)
2.2 系统硬件要求及设计 (5)
2.2.1 系统硬件的要求 (5)
2.2.2 系统硬件的设计 (5)
2.3 系统软件要求及设计 (6)
2.3.1 系统软件设计要求及注意事项 (6)
2.3.2 系统软件设计 (6)
2.4 本章小结 (7)
3 智能家居防盗报警系统硬件设计 (9)
3.1 PROTEL概述 (9)
3.2 系统主控模块设计 (10)
3.2.1 AT89C52系列单片机介绍 (11)
3.2.2 主控电路的设计 (11)
3.3 信号采集部分的设计 (13)
3.3.1 热释电红外传感器介绍 (13)
3.4 信号处理部分的设计 (15)
3.5 报警部分的设计 (16)
3.5.1 蜂鸣器介绍 (16)
3.5.2 报警电路 (18)
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3.6 LED数码显示部分设计 (19)
3.7 键盘电路的设计 (21)
