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基于单片机的温湿度报警器设计毕业(设计)论文论文.doc
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基于单片机的温湿度报警器设计毕业(设计)论文论文.doc
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2013 毕业设计论文
基于单片机的温湿度监控报警
系统设计
2013 毕业设计论文
摘要
温度、湿度和人类的生产、生活有着密切的关系,尤其是在医学、
电子电力、航天航空、食品发酵,农业生产等领域中对温湿度的要求尤
其严格,是最常见最基本的参数,例如机械、电子、石油、化工等各类
工业中广泛需要对温度湿度的实时检测与控制。并且随着人们生活水平
的提高,人们对自己的生存环境越来越关注。而空气中温湿度的变化与
人体的舒适度和情绪都有直接的影响,所以对温度湿度的检测及控制就
非常有必要了。
使用 STC89C52 单片机设计温湿度监控报警系统,可以即时精确的反
应温室内外的温度以及湿度的变化。完成诸如升温到特定的温度、降温
到特定的温度。在温度上下限范围内保持恒温等多种控制方式,在湿度
控制方面也是如此。将此系统应用到温室当中无疑为植被生长提供了更
加适宜的环境。对于大棚种植和花圃、花卉栽培,必须在某些特定环境
安装温湿度装置对其进行监控。本系统可以及时、精确的反映室内外的
温度以及湿度的变化,能够满足温湿度的控制要求。
关键词:温湿度 监控 STC89S52
2013 毕业设计论文
Abstract
Temperature, humidity and has close relation with the human production
and living, especially in medicine, electronics, electric power, aerospace,
food fermentation, the requirements for temperature and humidity in areas
such as agricultural production is particularly strict, is the most common is
the most basic parameters, such as machinery, electronics, petroleum,
chemical industry etc widely needed in real-time detection and control of
temperature, humidity. And as people living standard rise, people for their
own survival environment more and more attention. And the body's comfort
level with the change of temperature and humidity in the air and mood has a
direct effect, so the detection and control of the temperature humidity is very
necessary.
Using a STC89C52 single-chip microcomputer temperature and
humidity monitoring alarm system, can real-time accurate reaction inside and
outside the greenhouse temperature and humidity changes. Finish such as
heating up to a specific temperature and cooling to a specific temperature. In
upper and lower temperature range constant temperature control of a variety
of ways, so in terms of humidity control. Will no doubt of this system is
applied to the greenhouse for vegetation growth provide a more comfortable
environment. For greenhouses planting and flower beds, flower cultivation,
must be installed in some specific environment to monitor the temperature
and humidity devices. This system can timely and accurately reflect the
change of indoor and outdoor temperature and humidity, can satisfy the
requirement of the temperature and humidity control.
Keywords: Temperature and humidity, monitoring, STC89S52
2013 毕业设计论文
目录
摘要 ............................................................................................................I
Abstract .....................................................................................................II
目录 .........................................................................................................III
1 总体设计概述 .......................................................................................1
1.1 系统的主要功能 .........................................................................1
1.2 系统的工作原理 .........................................................................1
1.3 总体设计 .....................................................................................2
1.3.1 总体设计框图........................................................................2
1.3.2 总体设计工作流程................................................................3
2 系统硬件设计 .......................................................................................4
2.1 主控模块设计 .............................................................................4
2.1.1 STC89C52 概述......................................................................4
2.1.2 时钟电路与复位电路............................................................7
2.2 电源模块设计 .............................................................................8
2.3 DHT11 传感器模块设计 .............................................................8
2.3.1 DHT11 传感器 .......................................................................8
2.3.2 DHT11 传感器模块电路设计 .............................................10
2.4 1602 液晶显示模块设计 ...........................................................11
2.4.1 1602 液晶显示屏..................................................................11
2.4.2 1602 液晶显示屏参数..........................................................11
2.4.3 1602 液晶显示模块电路设计..............................................13
2.5 阈值设置模块设计 ...................................................................14
2.6 报警模块设计 ...........................................................................15
2.6.1 蜂鸣器报警模块设计..........................................................15
2.6.2 发光二极管报警模块设计..................................................16
2.7 24C02 数据存储模块.................................................................16
2013 毕业设计论文
2.7.1 24C02 数据存储器...............................................................16
2.7.2 24C02 数据存储器模块电路设计.......................................17
2.8 系统总体电气原理图 ...............................................................18
3 系统软件设计 .....................................................................................19
4 系统调试 .............................................................................................21
总结 .........................................................................................................22
致谢 .........................................................................................................23
参考文献 .................................................................................................24
附件 1 系统程序 ....................................................................................25
A1.1 主程序.....................................................................................25
A1.2 24C02 程序..............................................................................30
A1.3 DHT11 传感器程序 ................................................................33
A1.4 1602 程序.................................................................................35
附件 2 PCB 板.........................................................................................39
附件 3 实物图 ........................................................................................40
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