Development of Hydroponic Vegetable Growing Nutrient Concentration Control with Embedded

Abstract

This research proposes the development of hydroponic vegetable growing nutrient concentration control with embedded system with value control EC and pH by PLC FX1N. Which the organic solution that we have controlled are A, B and C by the equation to find the amount of mixing of each liter of water in the fertilizer formula 3-1-1. When the desired substance is obtained from the equation will write commands to control values by PLC FX1N. Then use a solenoid valve to control the solution that is ordered by PLC FX1N. The result of the experiment will get the ratio of the mixing quantity in the hydroponic vegetable growing at the amount of the solution (100 L of water per 1 L of organic solution) 70 L of water, the solution volume is 0.7 L, A=0.42 mL B=0.14 mL and C=0.14 mL and 100 L of water, the solution volume is 1.0 L, A=0.6 mL B=0.2 mL and C=0.2 mL. Experimental results 70 L of water time it takes to add the solution A=41 s B= 11 s and C=11 s EC=2.0-2.5 and pH =6.5-7.0 values as designed.