Intelligent Greenhouse Temperature Field Measurement And Control System Design And Implementation

With the widespread application of modern information technology in the agricultural field,a new agricultural transformation in the form of smart agriculture has arrived.Smart agriculture is the advanced stage of agricultural development from mechanization to digitalization and then to intelligence,as facility agriculture is an important manifestation of smart agriculture.The development of solar greenhouses is becoming more and more important.The function of the intelligent greenhouse is to artificially control the environmental conditions of crop growth with advanced technology,so that crop growth is not affected by the natural climate,and achieve high efficiency,low input and high efficiency production all year round.Based on the investigation and analysis of modern agricultural demonstration projects in Yunnan,combined with existing research,this paper analyzes the actual needs of greenhouse intelligent management,designs and develops a greenhouse intelligent management system,and named the system indoor temperature of greenhouse Field measurement and control system.The main research content of the thesis is as follows.The first part mainly introduces the application of CFD technology in the greenhouse,sensor fault detection and the current research status of greenhouse measurement and control systems at home and abroad.Through combing the literature of previous studies combined with the shutdown technology analysis of the indoor measurement and control system,the Zig Bee technology is selected for wireless signal detection.Collect and transmit,determine the basic composition framework of the indoor temperature field measurement and control system.The second part uses ANSYS to establish a greenhouse simulation model and verify the validity of the model.The validated greenhouse model is analyzed for indoor field changes,combined with the principle of spatial similarity and the LEBDF algorithm to identify faulty sensor network nodes.Ensure the stable operation of the indoor temperature field measurement and control system and provide accurate data support.The third part mainly introduces the realization process of the indoor temperature field measurement and control system.The indoor temperature field measurement and control system mainly includes the acquisition and transmission of sensor signals and the control of indoor equipment.It uses Zig Bee wireless communication technology to achieve signal acquisition and transmission,and uses software technology to develop the system platform,based on MVC(Model,View,Control)mode Realize the development of the indoor temperature field measurement and control system,and through related network tests to ensure the stability and effectiveness of the system operation,the results show that the measurement and control system based on the indoor temperature field can meet the needs of intelligent greenhouse management.This paper uses simulation software to analyze the internal field of the greenhouse,and proposes a sensor failure node detection method based on field changes,which provides accurate and effective data support for the intelligent management of the greenhouse,and combines software development and other related technologies to design and implement An intelligent management system for glass multi-span greenhouses,and named it the indoor temperature field measurement and control system,realizes the standardization,intensive and intelligent management of modern greenhouses,efficient planting of crops and precise operation of facilities and equipment.