《多功能传感器课程设计论文》.doc

课设论文（设计）题 目：系部名称： 系 专业班级：学生姓名： 学 号：指导教师： 教师职称：2011 年月目 录 1 题目背景和意义·······················································3 2 设计题目介绍·························································3 3 系统总体框架·························································3 4 系统硬件设计·························································44.1单片机STC89C52简介··············································44.1.1时钟电路····················································64.1.2复位及复位电路··············································74.2数字温湿度传感器DH11············································104.2.1 DH11概述··················································104.2.2 传感器性能说明············································114.2.3 电源引脚··················································114.2.4 串行接口··················································124.2.5 测量分辨率················································144.3酒精传感器MQ-3概述·············································144.3.1 硬件设计··················································144.3.2 微控单元STC89C52··········································144.3.3 TLC549模数转换············································164.3.4 软件设计··················································174.4烟雾传感器MQ-2概述·············································204.4.1 概述······················································204.4.2 设计理念··················································214.4.3 MQ-2传感器工作原理和简介·································214.4.4 MQ-2传感器和单片机的设计·································22 5 系统软件设计························································27 6 课设心得····························································46 7元件清单·····························································48 1 题目背景和意义 本课设的以《单片机》《传感器》《电路》等课程理论为基础，以其他电子类、计算机及接口类相关课程内容为辅助，在实践中锻炼学生的系统设计能力、理论应用能力、总结归纳能力以及自我学习能力，提高其实践能力、创新意识与创业精神。以达到理论学习的目的,并培养学生应用计算机辅助设计和撰写设计说明书的能力，加深对控制系统理解，将所学的知识灵活穿插并运用起来。 2 设计题目介绍 通过对本课程设计的学习，要求我们熟练掌握对多种功能传感器的掌握和运用，并会运用信号的转换和实践，将信号载入单片机中，通过单片机的计算输出处理完的数据，对液晶显示屏的现实或蜂鸣器的开启和闭合，本课设计旨在运用温度