摘 要
景觀溫室是一種配備有溫室環境控制系統的資源集約型高效農業生產方式,它在調控溫室內小氣候環境以適應作物生長發育要求的同時,不僅實現了作物的反季節生產,還提高了作物的質量以及作物生產的效率。近年來隨著傳感器技術、計算機技術、網絡技術、智能控制技術以及生物技術等高新技術和手段的飛速發展,帶來了溫室環境控制方面的一場革命。溫室環境控制系統正在不斷吸收相關領域新的理論和方法,結合溫室作物種植的特點,不斷創新,逐步完善。
本論文首先介紹了國內外溫室環境控制系統的研究發展狀況,總結了溫室環境控制系統的發展趨勢,分析了現有溫室環境控制系統存在的不足。溫室環境控制的目的是把各被控變量(溫室環境因子),如光照、溫度、濕度、CO2濃度等,維持在作物生長發育要求的范圍內,所以本論文還分析了各環境因子對作物生長發育的影響以及各環境因子之間的相互耦合關系。其次根據工控領域發展迅速的現場總線模型提出了AFCS(Agricultural Field Bus Control System)參考模型,并由此得出分布式溫室控制系統的物理模型,然后在上下位機結構形式的基礎上對溫室控制系統進行了軟硬件設計。最后利用工控領域優秀的控制軟件組態王(KingView6.5)編寫了溫室模擬運行軟件,利用該軟件可以對溫室進行參數設置,報表、曲線查詢,報警提示等。
關鍵詞:景觀溫室,環境因素,現場總線,分布式控制,組態軟件
Abstract
The ornamental glasshouse is a kind of high efficient and intensive production mode that equipped with the glasshouse environment control system. It adjusts the microclimate of greenhouse in order to adapt to farm crop growth request.At the time it not only carries out the anti-season.production of the farm crop,but also raises the productin effciency.In recent years along with the spread of high new techniques,such as sensor technique, calculator technique, network technique, the intelligence control technique and the living creature technique,it brings a revolution of glasshouse environment control. The glasshouse environment control、system is absorbing the new theories and methods continuously,combining the characteristics of the glasshouse farm crop plant, continuously creative,gradually perfect.
This thesis introduced the research development condition of domestic and international glasshouse environment control system first, pointed out the development trend and analyzed the existent shortage of the existing glasshouse environment control system. The glasshouse environment control is used to control the light shine,temperature,humidity,C02 density etc. within the scope of the farm crop grow request. So it is meaningful to analyze how environmental factors effect on the farm crop grow and how effect between environmental factors.Based on the model of fieldbus using in the scope of industry control,put forward the
AFCS( Agricultural Field Bus Control System)reference model and got the physical model of distributed glasshouse control system. Then the paper carried on the design of the hardware and software of the system based on PC and PLC. An integrity glasshouse control system shoulds till includes pray irrigation control system.So the paper includes the of spray irrigation system.At last using the configuration software-KingView6.5,author made simulated software that can imitate the movement of greenhousee quipment.And the software can be used to carry on the parameter constitution,report and curve search,and alarming.
Keywords: ornamental greenhouse, environmental factor ,fieldbus,distributed control,
configuration software