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應用於循環式養液系統之電導度與酸鹼度調配控制系統

The Application of Conductivity and P^H Control System in Circulating Hydroponic System

摘要


本研究提出適用於立體式栽培層架中循環養液的質傳分析模型,並成功對該模式進行實驗驗證。檢測立體式層架在不同循環配置下之營養液循環、混合所造成的時間延滯現象,並成功推估及驗證循環流速、栽培槽層數與營養液安定時間之相對關係,其預測誤差為± 10%。將此模型用於營養液調配系統之安定時間設定,成功建立一套能穩定立體式層架中循環營養液電導度(EC值)及酸鹼度(pH值)之營養液調配控制系統。並探討在多層串並聯配置下,養液在母液混合桶的安定時間,從研究中比較出使用並聯配置的栽培層在層數較多時能有較短的安定時間,亦有較寬的營養液調控頻寬。但並聯栽培層層數多時,也會提高循環系統對循環馬達的輸出馬力要求與增加每層栽培層與循環馬達間的高壓管配置成本。

並列摘要


This study has derived a model for a three-dimensional cultivation shelves for circulating nutrient solution based on mass transfer theory. The time delays in the model have experimentally determined to associate with various configurations of three-dimensional shelves such as flow rates, layers etc. The predicted errors were within ± 10%, which are sufficiently accurate for this application. A control system has been established based on the identified model. The experimental results have shown that the derived model is very useful to achieve the accurate control of the EC and pH values of the nutrient solution.

並列關鍵字

Load cell Fruit Automatic detection Discharge

被引用紀錄


黃家煒(2016)。微型植物工廠內不同顏色反射半球對萵苣生長之研究〔碩士論文,國立屏東科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0042-1805201714172360

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