摘  要：信息技术的飞速发展得益于科学技术的不断创新，人类对信息技术的依赖程度已经达到了前所未有的高度，在今天无论是任何领域，都可以看到信息技术的影子，信息技术与人类息息相关。家庭作为社会进步的最小细胞，智能化的引入可以丰富人们的生活，智能住宅已经成为民建领域非常重要的组成部分，它可以提供便捷高效的服务，在智能住宅的管理系统中，防火防盗则是智能住宅的首要智能化的体现。

本次基于单片机的智能小区防火防盗系统设计主要由主要控制部分、人体红外检测部分、火灾检测部分、LCD的实时显示部分、独立式的按键部分、温度检测部分和蜂鸣器报警送部分，一共七个部分组成。本次只要应用51单片机作为主要控制部分，通过周围的硬件电路连接确保对系统的整体控制，通过人体红外检测部分对有人进入电平输出，通过LCD1602液晶显示屏对需要的数据进行显示，应用火灾传感器和ADC组成的火灾检测部分采集烟雾浓度，应用温度传感器采集温度，通过独立按键部分设置需要的报警浓度报警温度。当检测到有人进入或烟雾浓度超过预设值或温度超过预警值时，有蜂鸣器警进行提示，同时有LED灯提示警信息。

关键词：报警器  传感器  单片机

Based on single - chip microcomputer of The fire - proof system of intelligent community

Abstract：The degree of human dependence on information technology has reached an unprecedented height. Today, no matter in any field, the shadow of information technology can be seen. Information technology is closely related to human beings. As the smallest cell of social progress, the intelligent introduction of the family can enrich people's life. Intelligent residence has become a very important part of the field of civil construction. It can provide convenient and efficient service. In the management system of intelligent residence, fire proof and anti-theft is the first and intelligent embodiment of Intelligent Residence.

The design of the intelligent fire prevention and theft system based on single chip microcomputer mainly consists of the main control parts, the infrared detection part of the human body, the fire detection part, the real-time display part of the LCD, the independent key press, the temperature detection part and the buzzer alarm and sending part, which consist of seven parts. This time, as long as the 51 single chip computer is used as the main control part, the whole control of the system is ensured through the connection of the peripheral hardware circuit. Through the infrared detection part of the human body, the data is displayed by the LCD1602 LCD display, and the fire detection part is made up of the fire sensor and ADC. Smoke concentration is collected, temperature sensor is used to collect temperature, and alarm concentration alarm temperature is set by independent button part. When someone enters or the smoke concentration exceeds the preset value or the temperature exceeds the warning value, the buzzer alarm prompts, while the LED light prompts the police information.

Key Words: burglar alarm  sensor  single chip microcomputer

目  录

摘  要 I

ABSTRACT II

1. 绪 论 1

1.1选题的背景 1

1.2 研究的目的和意义 1

2. 系统总体方案设计 2

2.1系统要求 2

2.2方案论证与选择 2

3.系统硬件设计 4

3.1整体方案设计.4

3.2最小系统模块.4

3.3液晶显示电路.5

3.4烟雾检测模块.7

3.5 DS18B20传感器模块8

3.6人体红外检测模块10

3.7按键输入模块11

3.8报警模块12

3.9 LED电路............13

4. 系统软件设计 14    

4.1程序语言及开发环境14

4.2程序流程图设计14

5. 系统调试 .19