Design of A Nutrient Film Technique Hydroponics System with Fuzzy Logic Control

This study presents the design and development of a nutrient film technique hydroponics system for lettuce. Hydroponics is a method of cultivating crops with the use of water with nutrient solutions as medium. This nutrient film technique hydroponics system was built as an alternative to traditional farming that requires a lot of space. This system can produce a good number of crops without consuming large land area. The system also features monitoring of the key parameters needed for by the crop to survive. A fuzzy logic control will also be used to maintain the level of the parameters. Data from the sensors for measuring electrical conductivity, pH, and as well as the water level of the mixing tank will be the input of the fuzzy logic and will control the pumps of fresh water and nutrient concentrate reservoir, and the drain of the mixing tank. The optimum values for electrical conductivity, pH, water flow rate, and temperature were all based on the existing studies that also cultivate lettuce as their primary crop.