(一氧化碳报警器毕业设计.docVIP

一氧化碳报警器设计 作者姓名：*** 专业名称：自动化 指导教师：*** 讲师 摘要 随着计算机技术和通信技术的飞速发展，日新月异的，舒适、便利、智能化”已成为的理念，家居智能化控制系统力求创造安全、舒适的生活环境理念成为众多开发商高度关注的卖点之一。MQ-2型气敏传感器和 STC12C5A60S2单片机为核心技术设计的一氧化碳报警器，运用单片机内部的十位模数转换器把传感器采集到的气体的浓度信号转换成数字信号，实现了气体或烟雾报警、报警限设置等功能，对有毒气体或烟雾检测报警的实现技术进行了的有意义的探索与研究，在有害气体监测实现方面有一定的参考价值。 关键词 ： STC12C5A60S2 气敏传感器 继电器 Abstract With the development rapidly of computer technology and communicable technology, human standard of living change largely. And the idea of based on human, coziness, convenience and intelligentize is already become important design ideas, meanwhile, the design idea of aiming at establish safe and comfortable living environment is also becoming the selling merit that lots of land agents have more attention. In this paper, warning system of intelligent house control system. Design scheme and demonstrated scheme are carried out based on the design task and observation in reality, hardware and software system is all designed, and CO ALARM is produced. The system uses the MQ-2 type gas sensor and STC12C5A60S2 SCM as the core technology of carbon monoxide alarm design, using ten bit analog to digital converter chip internal gas concentration signal collected by the sensor is converted into digital signal, realize gas or smoke alarm, the alarm limit setting function, exploration and Research on the realization technology of alarm toxic gas or smoke detection is meaningful, the harmful gas monitoring system has a certain reference value. Keywords: STC12C5A60S2, gas sensor, relay  目录 摘要 I Abstract II 目录 III 前言 1 1 绪论 2 1.1 课题背景 2 1.2 一氧化碳报警器的概述 3 1.3 课题研究的目的及意义 4 1.4 系统设计主要任务 4 2 方案设计 5 2.1 设计原理 5 2.2 设计思路 5 2.3 气体传感器的选定 6 2.4 装置效果图 7 3 硬件电路设计 8 3.1 芯片介绍及相关电路模块设计 8 3.1.1 STC12C5A60S2系列单片机简介 8 3.1.2 MQ-2气敏传感器介绍 11 3.1.3显示电路的设计 13 3.1.4蜂鸣器概述 15 3.1.6按键设计 17 3.2 系统功能扩展 17 3.3 设计的硬件电路 17 4 软件部分 19 4.1 主程序设计 19 4.1.1 主程序设计流程图 19 4.2 A/D转换模块的编程 20 4.3按键设计编程 21 5 系统制作及调试 22 5.1系统PCB板的制作 22 5.2 硬件调试 23 5.2.1检测元器件 23 5.2.2检测各个引脚信号 23 5.3 软件调