Hydroponics house with automatic control system using solar energy

Abstract

The article presents hydroponics house with an automation control system using solar energy. The structure of the system is divided into 2 parts: the first part is the solar energy system which can produce electric power at 842.21 Watt per day and the second part is the control system which consists of 5 operations; fertilizer mixing control system, water charging control system, water pump control system, temperature control system and humidity control system. The dimension of the hydroponics house is 12 meters wide and 2.4 meters in length. The house is covered with a gable roof with 0.8-meter height up from the roof frame for better ventilation, meanwhile, the floor frame is also 0.8-meter-high up from the ground for the release of overused water. During the daytime, the system can control 80% of humidity inside hydroponics house at a temperature of 35˚C. The water charging control system will work in conjunction with the fertilizer mixing system with a ratio of 400 mL fertilizer per 80 liters of water at 13 seconds run time. The system is functioned to run every 7 days for 4 times and then at the fifth time, the water charging control system will still work as usual while the fertilizer mixing system will stop working. From the performance testing of the system, it is found that the designed hydroponics-house can work efficiently and is suitable for the application.