The Research Of Intelligent Environment Control System For Multi-span Plastic Greenhouse In East China

Facility agriculture gets rapidly development in21th century. In orderto meet the needs of the situation, many countries have taken measures toincrease investment in intelligent agriculture facilities. Since1980s, Chinabegan using facility greenhouse simulating crops’ growing environment tohelp agricultural production. Facilities and related technology of Glassgreenhouse production mainly relied on imports from Netherlands andIsrael in the early days.By the end of2010, China’s horticultural area reached more than3.5million ha, nearly500-fold increase compared to1980, becoming one ofthe most largest region of greenhouse production. Although greenhouseproduction scale is developing rapidly, but high production cost ofdomestic greenhouse, particularly smart glass greenhouse, makes it moredifficult to come into daily life of ordinary people. In Addition, the qualityis also not as good as the same level products of foreign. The reason for theabove phenomenon is that the domestic high-end smart greenhousefacilities and intelligent environmental control system which is alsogenerally designed for the specific seeds mainly depends on imports, andlacks of greenhouse intelligent control systems which suitable forgreenhouse production in China.Based on the previous research on greenhouse environment intelligentcontrol at home and abroad, according to the status that the system whichowns Independent intellectual property rights has only a low degree ofintelligence and has a high production costs, develops an smart greenhouseenvironment control system aimed to the most widely adopted multi-spanplastic greenhouse in Shanghai area. This system provided easy-to-use human interface, and can make intelligent decision according to cropsgrowth needs and greenhouse environment. On the other hand, low-costmakes it competitive.This paper focused on these three aspects. First, studies the typicalimpact factor of environment, like temperature, humidity, light, carbondioxide, etc., related to crop’s growth to provide the basis for thegreenhouse electrical equipment modification. According with CFDsimulation results, propose a modular multi-level and multi-factordecision-making Control scheme. Second, according to the characteristicsof multi-span greenhouse structure and control objectives, proposed asolutions for System Architecture, which including a remote server (acombination of distributed systems based the VS2008design) andgreenhouse-site intelligent monitoring and control system (based on theARM11development). Third, given a detailed design on both hardwareand software of the greenhouse on-site control system. In terms ofhardware, selected S3C6410as the core processor, and then followed bydetailed circuit analysis and design of relevant hardware module; In termsof software, choose Linux as an embedded operating system, moreover,briefly describes the transplantation process of embedded systems and Qt/Embedded.