智能温室控制系统的设计.doc

智能温室控制系统的设计
摘要：单片机在日用电子产品中的应用越来越广泛，温度和湿度则是人们日常生活中常常需要测量和控制的一个量。本文采用AT89S51单片机、温度传感器DS18B20湿度传感器和液晶显示器1602A从硬件和软件两方面介绍了一款简易数字温室控制系统的设计过程， 并对硬件原理图和程序流程图作了简洁的描述，同时本文介绍了DS18B20， HS1101和1602A内部结构及工作时序，该温室控制系统适用于农业生产及多方面应用。
关键词：温度传感器；湿度传感器；单片机；液晶显示器
Greenhouse control system
Abstract: SCM in daily application of electronic products more and more widely
Temperature and humidity in daily life is often need measurement and control of a quantity。Based on AT89S51 and temperature sensor DS18B20 humidity sensor and LCD 1602A from two aspects of hardware and software are introduced a simple digital control system design process of greenhouse。And the hardware diagram and program flow chart of the concise description, The paper introduces DS18B20 HS1101 and 1602A internal structure and working sequence。The greenhouse control system for agricultural production and various applications.
Key words: temperature sensor; Humidity sensor SCM; LCD display
目 录
1 温度设计 ...........................................................................................1
1.2 传感器DS18B20................................................................................1
1.2.1 DS18B20温度传感器特性..................................................................1
1.2.2引脚介绍........................................................................................1
1.2.3 工作原理........................................................................................2
1.2.4 高速暂存存储器...............................................................................4
2湿度设计..............................................................................................5
2.1HS1101湿度传感器 ............................................................................5
2.1.1特点...............................................................................................5
2.1.2最大参数值......................................................................................5
2.1.3特征参数........................................................................................6
2.1.4电压输出典型参数 ............................................................................6
2.1.5频率输出回路...................................................................................6
2.1.6频率输出典型参数 .............................................................................7
3.液晶显示器............................................................................................7
4驱动电路................................................................................................9
5程序设计................................................................................................10