编号信息职业技术学院毕业论文题 目多功能温室检测控制系统设计学生学 号院 系电子工程学院专 业栽培生产班 级指导老师顾问老师摘要摘要正文输入课题背景课题设计课题结果温室环境系统是一个多变量、非线性、时变和滞后的系统。其中，温度和湿度的变化是最基本的因子，对农业作物影响最为显著。本文以 AT89C51 单片机为核心，选用 DS18B20 温度传感器和 Al2O3 型湿度传感器，设计实现了温室大棚温、湿度测控系统。系统由主程序、数据采集与显示、温湿度参数设置、执行机构控制、报警等模块组成。与传统测试系统相比具有结构简单、体积小、成本低、通用性好、易于实现等特点。关键词：AT89C51；温度传感器；湿度传感器；A/D 转换Abstract英文摘要正文输入[格式刷]This system takes the AT89C51 singlechip as the control core, using the temperature sensor AD590 to carry on real-time gathering and controlling to the greenhouse of vegetables, so it can realizes auto-control to the greenhouse’s temperature. This system contains the miniature singlechip system module, the temperature gathering module, the heatermodule, the drop-temperature module, the key pressed module and the display module. The gathering temperature or the setting temperature is displayed through the seven-seg LED. It can be established new temperature value in the greenhouse through pressing buttons, when this temperature value is higher than the gathering temperature value, then makes the heater work in order to achieve the defined value; Otherwise, the heater knocks off, and opens the ventilator as fast as to achieve the supposed temperature. It will be effective and reliable to exam and control the temperature of the greenhouse by using this system, thus guarants the crop growing fine under the best temperature condition, and enhances the crops’ quality and output.Keywords:Single chip; Temperature sensor; Temperature control; Temperature display; Keyboard entry; Greenh...
