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摘要在火灾频繁发生的今天，人们一直在寻找火灾报警的有效设备，从简单的眼观鼻嗅到模拟电子报警系统，火灾报警器已进入数字报警时代。用Arduino替代传统的微芯片，因为Arduino平台有丰富的外部接口与配件，方便新手学习，利于创新，基于此它将把火灾报警器带到一个准确报警，创新报警的一个巅峰。50570
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本次设计用传统的设计方法，先做硬件的设计，然后给每一个硬件模块配以软件的子程序。其中硬件的选用方面，有温度传感器和M-Q2（烟雾传感器），通过烟雾/温度传感器采集火灾信息，信号滤波放大后处理后交给Arduino，Arduino处理信息后，判断是否发生火情，如果发生即会通过蜂鸣器报警。硬件电路包括DS18B20测温电路，报警电路，四位数码管显示电路，按键电路，烟雾传感器转换电路。软件设计包括主程序设计，数字滤波程序，报警程序，控制按键设计程序，检测程序。程序使用C语言编写，调用函数库，使程序设计更简便。
毕业论文关键词：Arduino 报警器 传感器
Abstract
Frequent occurrence of fire today, people have been looking for an effective fire alarm equipment, from simple analog electronic Grossly, nose smelled alarm system, fire alarm has entered the era of the digital alarm. Replaced with Arduino traditional microchips, because Arduino platform has a wealth of external interfaces and accessories to facilitate novice learning, conducive to innovation, based on this it will bring an accurate fire alarm alarm, an alarm pinnacle of innovation.
The design of the traditional design methods, the design of hardware do first, and then to each hardware module with software subroutines. Choose which aspects of the hardware, with a temperature sensor and M-Q2 (smoke sensor), fire information collected by smoke / temperature sensor, signal filtering after the enlargement process to the Arduino, Arduino after processing information to determine whether the fire occurred, the event That will be an alarm through the buzzer. Hardware circuit including DS18B20 temperature measurement circuit, alarm circuit, four digital display circuit, key circuit, smoke sensors converting circuit. Software design, including the main program design, digital filtering program, alarm procedures, control button design procedures, testing procedures. Programs written in C, call the library to make programming easier.
Keywords: Arduino alarm sensor
目录
摘要 I
Abstract II
1.绪论 III
1.1 国内外研究现状 1
1.2 课题研究意义 2
1.3本论文完成的主要工作 3
2.火灾报警系统整体方案规划设计 5
2.1火灾报警系统的设计目标 5
2.2火灾报警器的原理 5
2.3火灾报警系统的框图 6
2.4控制器的选择 6
2.5 核心芯片AVR的简单介绍 6
2.6火灾报警系统的硬件框图 8
3.火灾报警系统硬件设计 9
3.1外部接口电路 9
3.1.1 DS18B20测温电路 9
3.1.2报警电路 10
3.1.3四位数码管显示电路 11
3.1.4按键电路 12
3.1.5烟雾传感器转换电路 12
3.2硬件电路图设计 12
4.软件设计 13
4.1系统软件设计总流程图 14
4.2主程序设计 15
4.2.1设计要求 15
4.2.2主程序流程图 15
4.2.3主程序初始化流程图 17