多功能传感器课设论文(整理).doc

课设论文（设计） 题 目： 多功能传感器课设 系部名称： 信息工程系 专业班级： 自动083 学生姓名： 董少衡 学 号： 200880874319 指导教师： 余发军 教师职称： 讲师 2011 年12 月 21 日摘 要 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传感器，酒精传感器，烟雾传感器，三种传感器结合单片机，液晶显示屏，蜂鸣器的综合，达到对这三种传感器的学习掌握和应用；同时也要学会处理好对干扰信号的影响，结合已经掌握的课程知识，完成对课程设计的系统掌握。 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。 重要运用所学的理论知识，通过先设计在实践的研究方法，去解决多个传感器之间的综合运用和掌握，熟练掌握各种传感器的使用，达到锻炼学生分析问题解决问题的能力。 关键字：STC98C52单片机，烟雾传感器，温度传感器，酒精传感器，液晶显示屏 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·························································4 4.1单片机STC89C52简介··············································4 4.1.1时钟电路····················································6 4.1.2复位及复位电路··············································7 4.2数字温湿度传感器DH11············································10 4.2.1 DH11概述··················································10 4.2.2 传感器性能说明············································11 4.2.3 电源引脚··················································11 4.2.4 串行接口··················································12 4.2.5 测量分辨率················································14 4.3酒精传感器MQ-3概述·············································14 4.3.1 硬件设计··················································14 4.3.2 微控单元STC89C52··········································14 4.3.3 TLC549模数转换············································16 4.3.4 软件设计··················································17 4.4烟雾传感器MQ-2概述································