大棚蔬菜湿度控制系统(单片机论文).doc

大棚蔬菜湿度控制 Humidity control greenhouse vegetable 摘 要 湿度检测在工业、农业、国防等行业有着广泛的应用。利用单片机技术的系统以其体积小，可靠性高而被广泛采用。The humidity examination which is widely used in industry, agriculture, national defense and so on .the humidity examination which is widely used because that the system which uses microcontroller technology is volume small and reliability. This article has carried on the analysis design to the humidity examination system. First, the application and development condition of the humidity examination technology is made a simple introduction. And then, the humidity examination of commonly used method which has enumerated the characteristic as well as each one .The point of the article is the design of the hardware and software. In the process of hardware designing, the function and the characteristic of each part of electric circuits which has made a simple introduction in detail. Meanwhile, the humidity sensorHS1101 and the chip of the A/D transformation to the system in TLC1549 have been made the simple introduction. In the process of software designing, I have drawn up each program module flow chart, and introduced each module function in detail. Then to the procedure repeatedly revision, it has been consummated the software system. Finally, I has completed the over all system designing. This system have the characteristic of sensitivity high and the reflection time is short, and so on .It has the intellectualization, and programmable and small, then takes along short, and so on. It believed that this system has the widespread application . Keywords：?MCU,?humidity examination，software?system,?hardware?system 摘 要 2 ABSTRACT 3 第1章 绪论 5 1.1湿度的基本概念 5 1.2 湿度检测的应用领域 5 1.3 常见的湿度检测方法及特点 6 1.4 湿度测量技术的发展趋势 6 1.5 本课题研究的主要内容和目标 7 第2章 湿度检测系统的功能与硬件设计 8 2.1湿度检测方案的选择 8 2.2 设计方案的确定 8 2.2.1 处理器 9 2.2.2 显示电路 9 2.2.3 键盘电路 9 2.3 湿度检测仪的主电路设计 9 2.3.1 系统时钟电路设计 10 2.3.2系统复位电路的设计 10 2.3.3 按键与按钮电路的设计 11 2.3.4 系统的显示电路设计 12 2.3.5 电源设计 13 2.3.6 湿度检测传输及A/D转换电路 14 2.3.7 硬件电路原理图 15 2.4 器件的选择及说