【作者】 郭永江；

【导师】 周宝焜；

【作者基本信息】 福建农林大学 ， 农业机械化工程， 2004， 硕士

【摘要】 本论文介绍了硕士学位研究课题的主要情况。通过对传感技术、通讯技术、自动检测技术和计算机技术的运用，实现了一个快速，准确，性能较好的智能温室控制系统。实现了对温室的主要环境参数——温度、湿度、光照度、CO₂浓度的综合控制。温室系统共有控制系统、喷淋系统、通风系统、遮阳系统、降温系统几大部分组成。控制系统的硬件由两部分组成。下位机系统以89C52单片机为核心，完成环境参数的采集、显示、通讯等功能；上位机系统利用Delphi6.0作为软件的编程环境，由RS232接口与采集系统通讯，主要完成对温室环境参数的显示、存储、查询、打印、远程控制等功能。由于温室系统是一个大滞后、非线性、多输入输出变量的耦合系统，难以建立精确的数学模型，利用常规的控制算法无法得到非常满意的控制效果，因此采用专家数据库作为控制的基准，从而取得了较好的控制效果，实现了对温室环境的综合控制。更多还原

【Abstract】 This paper presents main part of the study of M.S.degree. In this paper, a set of fast, precise and high performance intelligent greenhouse control system was set up by using sensor technology, automatic measurement technology, communication technology and microcomputer technology. It is designed to control the indoor environment paramenters such as temperature, humidity, CO2 pressure and light intensity. The system of greenhouse is composed of control module, raining module, shining-void module, drift module, cooler module. The hardware of control module includes two parts: a lower-level and a higher-level computer. The central component of the lower-level computer is 89C52 single-chip microcomputer, whose usage is to finish data acquisition, data processing and data communication; The. higher-level computer, used Delphi6.0 as its programming environment to finish the real-time monitor and control function such as real-time data collection, real-time data showing , data memory and historic data query by communicating with the lower-level computer through RS232.The greenhouse system is a large lagging, nonlinear, multiple input and output object. So it is hard to found the precise model and difficult to attach a satisfactory effection in conventional control methods. So we use the expert database system so as to realize control with many factors in greenhouse environment.更多还原