期刊論文
| 學年 | 114 |
|---|---|
| 學期 | 2 |
| 出版（發表）日期 | 2026-03-27 |
| 作品名稱 | Fuzzy-Based Adaptive Temperature Management for Hydroponic Systems: An IoT-Enabled Approach Considering Nutrient Solution Dynamics |
| 作品名稱（其他語言） | |
| 著者 | Tran, Thanh-Trang; Huu-Khoa Tran; Tran, Nhut-Tam |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Journal of Engineering Management and Systems Engineering 5(1), p.42-62 |
| 摘要 | This study proposes a fuzzy-based adaptive temperature management system for hydroponic cultivation in tropical climates. Unlike conventional fixed-setpoint controllers, the proposed Mamdani fuzzy system utilizes pH and electrical conductivity (EC) as contextual inputs to dynamically adjust temperature control strategies. The underlying hypothesis is that maintaining lower root-zone temperatures (RZTs) during suboptimal pH/EC conditions may increase dissolved oxygen availability, partially compensating for nutrient stress. The Internet of Things (IoT)-enabled system employs Long Range wireless protocol (LoRa) communication for long-range, low-power data transmission, with fuzzy inference executed at the gateway for offline resilience. A five-month field validation (April–August 2024) in Ho Chi Minh City demonstrated effective temperature regulation, maintaining solution temperature within the 18–28 °C operational target range for 88.7% of the trial period, with zero exceedance of the 35 °C critical threshold. The system maintained pH at 5.72 ± 0.32 (86.4% time in optimal range) and EC at 1.87 ± 0.28 mS/cm (81.3% time in optimal range). Retrospective simulation comparing the proposed controller against On/Off, proportional-integral (PI) baselines, and temperature-only FLC baselines, demonstrated a 15–16% reduction in chiller runtime while maintaining equivalent thermal safety. Operational crop assessment across three cultivation cycles indicated commercially viable lettuce production. A dedicated system engineering analysis addresses architecture trade-offs, reliability, scalability, and cost-effectiveness for practical deployment in tropical commercial operations. |
| 關鍵字 | Fuzzy logic control; Hydroponics; Internet of Things; Root-zone temperature; Electrical conductivity; Long Range wireless protocol; Smart agriculture; Tropical climate |
| 語言 | en_US |
| ISSN | 2958-3519 |
| 期刊性質 | 國外 |
| 收錄於 | EI Scopus |
| 產學合作 | 國外 |
| 通訊作者 | |
| 審稿制度 | 否 |
| 國別 | HKG |
| 公開徵稿 | |
| 出版型式 | ,電子版,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/130029 ) |