2016届毕业生毕业设计说明书
(原创保证能用)
题目: 基于单片机的室环境智能监测系统设计
院系名称：专业班级：
学生：学号：
指导教师：教师职称：
2016 年05月25日
摘要
随着社会的发展，科学技术的提升，生产生活的不断优化，人们的生活水平也在随之不断提高，因此人们也开始越来越重视室环境发舒适程度。住宅不仅是家庭团聚和生活的场所，而且还是人们生活的重要物质保障，但随着装修材料的肆意使用和生活用品的日益广泛，居住环境的隐患大幅度提高，室环境污染已成为严重影响现代人类健康的杀手之一，严重影响着人们的生产生活。因此尤为重要的便是室环境的监测，不仅要灵敏的检测出各种有害气体的浓度大小，也要具有报警功能，可以时刻提醒危险。当下市面上也有很多监测室环境的装置仪器，但其大部分价格偏高而且功能相对单一局限，因此非常需要能够综合监测室温湿度和有害气体的智能系统。
本设计主要运用了如下几方面的功能：
1．将单片机和温湿度、气体传感器相连接，实现实时采集和读取室温湿度值以及监测气体浓度，达到预期效果。
2．利用LCD完成了显示电路的设计。
3．利用蜂鸣器报警功能，当气体浓度值和温湿度值超过设定的标准值时，实现自动报警功能。
4．当温湿度超限时，LCD显示器可以立即提示并结合发光二极管报警，当气体浓度超限时采用发光二极管报警。
关键词：单片机；声光报警；LCD显示电路；室环境监测
Title The design of indoor environmental intelligent
monitoring system based on the Single Chip
Microcomputer
Abstract
With the development of society, the improvement of science and technology, the continuous optimization of production and life, people's living standards have been improved, so people have begun to pay more attention to the indoor environment. Residence is not only the place of family party and life, but also an important material guarantee of people's lives. But with the wanton use of decoration materials and daily necessities, the hidden danger of the living environment is greatly improved. Indoor environment pollution has become one of the serious killer on the modern
human health, impacting on people's production and life. Therefore, it is particularly important to monitor the indoor environment, not only to be sensitive to detect the concentration of harmful gases, but also with alarm function, it can always remind the danger. At present on the market also has a lot of indoor environmental monitoring instrumentation, but most of its high price and function relative to a single limited. Therefore there is a great need for comprehensive monitoring of indoor temperature and humidity and harmful gas intelligent system.
This design mainly uses the following several aspects of the function:
1 The single chip microcomputer and the temperature and humidity, gas sensor are connected to achieve real-time collection and reading room temperature and humidity values as well as monitoring the gas concentration, to achieve the desired results.
2 The design of display circuit is completed by using LCD.
3 Using buzzer alarm function, when the gas concentration and temperature and humidity value exceeds the set standard value, realize the automatic alarm function.
4 When the temperature and humidity are out of limit, the LCD monitor can prompt and combined with the light emitting diode warning, when the gas concentration exceeds the limit, the light emitting diode is used to alarm.
