The Automatic Control System of PH and Temperature for Hydroponic Vegetables via Android

Abstract

            The purposes of the research were to develop The Automatic Control System of The PH and Temperature for Hydroponic Vegetables via Android. The hardware system is designed using the Arduino board for programming. and PH control Use Analog pH Meter Pro sensors to measure the pH of water with soluble elements. When the sensor detects the nutrient solution is Acidic the system instructs the relay to switch on the solenoid valve to increase the Alkalinity for adjusted to neutral. And when the sensor detects the nutrient solution is Alkalinity the system instructs the relay to switch on the solenoid valve to increase the Acidic for adjusted to neutral. And use a temperature sensor (Digital IC DS18b20) for temperature measurement When the temperature exceeds 30 degrees, the system switches on relay the mist spray pump to work for Lower temperature to balance the needs of hydroponics vegetables.

            The research findings showed that the system can checking pH sensor and temperature and control the operation of solenoid valves and mist spray pumps to help facilities of the growers very well.