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題名 | 半開放式棚架溫室之模組化環境控制箱開發=Technological Development of a Modular Environmental Control Box for Use in Semi-Open Type Greenhouses |
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作者 | 吳柏青; 張邦彥; 周立強; | 書刊名 | 宜蘭大學生物資源學刊 |
卷期 | 7:1 2011.12[民100.12] |
頁次 | 頁49-62 |
分類號 | 435.16 |
關鍵詞 | 溫室; 環控; 可程式控制器; 濕空氣線圖; 空氣線圖; Greenhouses; Environmental control; Programmable logical controller; Psychrometric chart; |
語文 | 中文(Chinese) |
中文摘要 | 本文目的在於以工業使用普及之可程式控制器(PLC)及其週邊硬體元件,發展一種可「模組化」的環境控制箱,使用於半開放式棚架溫室。方法策略是以條件序控法為架構,結合空調程序與濕空氣線圖原理,推導環控操作的邏輯語言, 再轉譯成可程式控制器的階梯電路程式,針對溫度、相對溼度及照度進行邏輯及追值控制。此模組化環境控制箱, 在噴霧降溫作業一及二之操作控制歷程中得平均最大蒸發冷卻效率分別為28.4±3.8%及39.6±2.3 %,確認使用者在環控箱的面板設計上可依現場狀況去設定各設備之動作時間, 使其對應之環控作業效能達到最適效果。 |
英文摘要 | The main purpose of this work was to use a programmable logical controller (PLC) associated with its interface devices, which were popular commercial apparatuses widely used in industrial control, to develop a modular environmental control box for use in semi-open type greenhouses. By employing the linkage of air conditioning procedures and principles of a psychrometric chart, we used the condition-sequencing control methodology as a main control framework to deduce the procedural and Logical issues of temperature-humidity and illumination environmental control in such a greenhouse. A Boolean logical language was employed to transform the environmental control paths in a psychrometric chart into a PLC program to implement the operation of environmental control in semi-open type greenhouses. The control display plane of our developed modular environmental control box was designed to easily operate for users to achieve more efficient evaporation-cooling effects in commanding fog-cooling operations. The performance outcomes show that the developed modular environmental control box can appropriately modulate indoor temperature and relative humidity to achieve an expected target range for managers. Thus, we confirm that our developed modular environmental control box can satisfy the operational requirement of environmental control in such a semi-open type greenhouse. |
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