基于单片机的烟雾检测报警系统毕业设计.doc

摘 要 据相关统计，随着家用电器的普及，家庭用电量正呈逐年上升的趋势，家庭火灾发生的频率也越来越高，火灾报警器也随之被广泛应用于各种场合。运用多传感器结合单片机能够有效解决灵敏度与报警准确率之间的矛盾，本文正是利用单片机结合传感器技术而开发设计了这一烟雾监控报警系统。 本设计选用MQ-2烟雾传感器、DS18B20温度传感器以及AT89S52单片机作为核心器件并与其他电子技术相结合，通过AT89S52单片机控制传感器对检测地点的烟雾、温度进行实时检测，并把检测结果进行数据信息处理，可以实现声光报警、浓度显示、温度显示等功能。是一种结构简单、性能稳定、使用方便、价格低廉、智能化的烟雾报警器，具有一定的实用价值。 论文主要针对烟雾报警系统中的各个组成部分及功能进行了详细的介绍和说明，并对其主控电路和外围设备电路之间的接口连接方式，以及系统软件设计进行了重点的分析和讲解。 关键词：烟雾；报警器；单片机；传感器 Abstract According to relevant statistics, as household appliances popularization,family electricity use is increasing year by year, family fire occurrence frequency is also more and more high, fire alarm has subsequently been widely applied in all kinds of situations. By using microcontroller can effectively solve the sensor with sensitivity and alarm accuracy. In this paper, combined with the use of single-chip sensor technology development and design of the smoke control system. This protect designs a better smoke alarm with MQ-2 smoke sensor, DS18B20 temperature sensor and AT89S52 type MCU as the core, and combines with other electronic technology. Each module is controlled by the MCU for monitoring the smoke, fire, and other information in real-time and the MCU will process the information. It can realize a series of functions such as sound and light alarming, the smoke density and the temperature being demonstrated. It is one kind of structure simple, the performance stable, easy to operate, the price inexpensive, the intellectualized smog alarm apparatus and has certain practical value. Thesis give detailed introduction for the function and theory of the various component parts of the alarm system, focus on the interface technology between its main controlled circuit and peripheral circuit, also give explanation of the software . Key words: smoke; alarm; MCU; sensor PAGE II 目 录 TOC \o 1-2 \h \z \u HYPERLINK \l _Toc359701684 第1章 概述 PAGEREF _Toc359701684 \h 1 HYPERLINK \l _Toc359701685 1.1 论文选题背景、目的和意义 PAGEREF _Toc359701685 \h 1 HYPERLINK \l _Toc35970