The Research On The System Of Monitoring And Control For Greenhouse Environment Based On Internet And Expert System

The paper introduces the development process of the modern greenhouse control technology in detail.It is prediceted that expert control system is the developmental direction according to the application and the current situation of the domestic and the international greenhouse control technology .With abundant experience and professional knowledge,expert system can work well as human experts. In order to save and spread all kinds of precious expert knowledge, It can enhance the abilities of human experts extremely.Nowadays expert system penetrates a lot of domains, and produce huge benefit of society and economy. experiences of advanced countries show that it is very important to upgrade the agricultural production and planting management skills by collecting, summarizing and spreading the advanced technologies of agricultural expert and advanced management experiences of agricultural factory. Theory of Rough Set is a softly calculating method based on set theory,which recognizes that knowledge is a categorized ability that mankind and other species inherented and extend the concept of knowledge reduce,relative reduce,dependence of knowledge.We can obtain decision rules through relative reduce which has removed redundant of attribute. Because it is unavoidable to introduce noise data and with the demand of rule expanding,this thesis adopts variable precision rough set model,approximate reduce was introduce from this model. Experiments on control system of greenhouse had been done for data collection,After the establishment of greenhouse mathematical model , A simulation was Implement on MATLAB ,The results show that Fuzzy expert controller is a effective operation.According to the characteristic of SustainableAgriculture , A long–distance control system for green house enviornmet of it which based on ARM has been designed in this paper.The system consists of agriculture sensors. embedded locale controller, and Long-Distance Supervisory computer. The idea has been proposed that the supervisor and control system uses the high performance embedded Internet network part as the bridge which is downwards compatible with the special network consist of the CAN bus and upwards uses the local network to connect with Internet. This system is very practical and easy to integrate with the enterprise network.This system involves in embedded technology, the technology of establishment of greenhouse expert system, CAN bus technology, sensor technology, Ehernet technology. It can be used in medium and lots of large green houses.