Simulation Design of an HMI-Based Monitoring System for Hydroponic Cultivation

Hydroponic cultivation, Human–Machine Interface (HMI), PLC, real-time monitoring, smart farming.

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October 6, 2025
October 31, 2025

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Hydroponic cultivation offers a promising alternative to conventional agriculture, particularly in urban areas with limited land. Its success, however, depends on maintaining precise conditions such as nutrient concentration, pH, water level, and temperature. Manual monitoring methods are often inefficient, error-prone, and lack real-time accuracy, highlighting the need for automated solutions. This study presents the simulation design of a Human Machine Interface (HMI)-based monitoring system integrated with a Programmable Logic Controller (PLC). The system was developed using Schneider Modicon M221 for control logic and Schneider Magelis GTU for visualization, with programming through EcoStruxure Machine Expert Basic and Vijeo Designer. Key hydroponic parameters were monitored, while actuators such as fans, pumps, and motors were automatically controlled based on predefined thresholds. Simulation results demonstrated reliable performance the fan activated at 36 °C and deactivated at 32 °C, pH and TDS values were displayed with threshold-based alarms (lamps indicator), water levels triggered automated refilling cycles, and nutrient distribution was periodically regulated. These outcomes validate the system’s ability to provide real-time monitoring, improve transparency, and reduce human dependency.