Font Size: a A A

The Greenhouse Expert Management System Based On Remote Monitoring Technology

Posted on:2009-08-17Degree:MasterType:Thesis
Country:ChinaCandidate:Y T LvFull Text:PDF
GTID:2208360245462711Subject:Control theory and control engineering
Abstract/Summary:PDF Full Text Request
Facilities agriculture is one of the 21st century's most dynamic new industries, and greenhouse is its typical representative. As electronic technology and information technology is developing rapidly, as well as being applied widely, greenhouse technology has aimed to automation and informationization. Only if making full use of the new theories and methods from computer technology, intelligent control technology and information technology, greenhouse can be real modernization and industrialization. So, the research on the greenhouse expert system of intelligent monitoring and control is important to the increase of greenhouse economic benefit and the modernization of greenhouse industry .In this paper, the integration of control network technology and information network technology were studied based on the actual situation of agricultural production, an expert system of greenhouse environment management based on wireless remote monitoring were proposed by combining the wireless remote monitoring system and the conventional expert system of agricultural management.Remote control technology is a monitoring technology which extends its control area using of existed information networks. It realized the integration of greenhouse-site monitoring network with GPRS technology and Internet by selecting GPRS mobile communication technologies, considering the geographically scattered and difficult features of greenhouse, such as the laying of a dedicated line. It chosen RS-485 as its field-bus, and established a Remote Monitoring System with long-distance transmission of data over the Internet.Paper on the greenhouse environment expert system for knowledge acquisition was studied. Collecting the relevant data of greenhouse environment with the wireless remote monitoring system developed by China Academy of Agricultural Sciences Environmental Labs. In the expressing of expert system knowledge, production methods were used, and expressed the corresponding control rules in the reasoning mechanism, the positive reasoning strategy was used to design a fuzzy expert controller. At the same time, the paper introduced the basic knowledge of fuzzy control theory, and the basic concepts of the development of applications, as well as applied it to the knowledge acquisition of greenhouse environment.In order to achieve the Objective of main factors in greenhouse integrated environmental control optimization, which to design the greenhouse integrated environmental management expert system. Using the object-oriented technology, based on ASP. NET technology B/S model development mode, using Visual Basic programming language to program development, constructed in accordance with the actual requirements of the corresponding system platform. To the theory of fuzzy control technology, modular design structure of the strategy to achieve the state of the system setup, control parameter settings, real-time acquisition monitoring, fuzzy control, as well as historical data for coordinating help desk functions.Worthy of noting that the relationship between the environmental factors affects plant growth and development is complex and diverse. Because of the time and energy constraints, we only do a part of its research, experts control management system also need evaluation and improvement in the further actual operation.At last, the conclusions and achievements of this paper are summed up, and the future work is prospected.
Keywords/Search Tags:Remote monitoring technology, data acquisition, expert system control, fuzzy reasoning, greenhouse environment
PDF Full Text Request
Related items