Development Of The Software In Monitoring And Managing System For Greenhouse Environment

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.