基于单片机的温室大棚测控系统研究

论文编号:JD1034  论文字数:14617,页数:37  附原理图，PCB,仿真

摘要
 
 本文从温度检测电路、A/D转换电路、输出控制电路、键盘及LED显示电路的设计等几个方面出发，详细研究和设计了基于单片机的温室大棚测控系统的各个部分内容，设计了单片机及其外围电路，并结合一套完整的程序算法。给出了一套温室大棚测控系统软硬件解决方案。系统通过温度检测电路感知温室大棚温度变化，通过模数转换送给单片机处理，通过键盘设定上限温度和下限温度，当温室大棚温度低于设定的温度下限值时，启动点暖风机给温室加温，当温室大棚温度高于设定的温度上限值时，停止加热，实现了温室大棚测控的自动化。
 关键字 AD590温度检测  A/D转换  单片机

Abstract

    this article from the temperature examination electric circuit, a/D switching circuit, the output control electric circuit, the keyboard and LED display circuit's design and so on several aspects embarks, the dissect and has designed based on monolithic integrated circuit's greenhouse big awning observation system's each partial contents, has designed the monolithic integrated circuit and the peripheral circuit, the parallel connection unites the set of complete procedure algorithm. Has given a set of greenhouse big awning observation system software and hardware solution. The system through the temperature examination electric circuit sensation greenhouse big awning temperature change, gives monolithic integrated circuit processing through a/d conversion, through keyboard hypothesis upper limit temperature and lower limit temperature, when the greenhouse big awning temperature is lower than the hypothesis the temperature lower limiting value, start heater unit to greenhouse warming, when the greenhouse big awning temperature is higher than the hypothesis in the temperature the limiting value, stopped heating up, has realized the greenhouse big awning observation automation.

key words: AD590 temperature examines A/D transformation monolithic integrated circuit

目  录

第一章  引  言 5
1.1 概 述 5
1.2 测控要求 5
1.3 测控方案 5
第二章  温度测控系统组成框图 7
2.1 系统模块框图 7
2.2 输入/输出设备 7
2.2.1显示器 7
2.2.2键盘 8
2.3 键盘/显示器接口 9
2.4 A/D转换 10
2.4.1 简介 10
2.4.2 A/D转换硬件应考虑的问题 11
2.5 温度测试电路的调整 12
第三章 温度测控系统硬件与其详细功能介绍 13
3.1系统硬件组成 13
3.1.1 AT89C51 13
3.1.2 ADC0809 15
3.1.3 AD590 18
3.1.4 MAX232 21
3.1.5 74LS164 22
3.2 显示电路 23
3.3工作电路 24
3.4 时钟电路 24
3.5 复位电路 25
3.6 温度检测电路 26
第四章 温度测控系统软件设计 28
4.1 软件总体结构 28
4.2 软件设计 28
4.2.1工作流程 28
4.2.2功能模块 29
4.2.3资源分配 30
第五章  系统的仿真 31
5.1 Proteus简介 31
5.2 系统的仿真和操作方法 33
第六章  结论与展望 36
致谢 37
参考文献 38
附录：系统的整体电路图 39