Maintenance of Soil Water Content with Automatic Irrigation and Soil Moisture Sensor

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Maintenance of Soil Water Content with Automatic Irrigation and Soil Moisture Sensor
DISUSSION
Power Supply. The power supply is connected to the microcontroller which then connected to the water pump driver and sensors. It is made of a 12/5 V battery which is used to drive the motor. The battery is charged using a photovoltaic cell which helps to convert light energy into electricity. According to (Balaji and Sudha 203), the power supply system provides electricity to be used for pumping water and transmitting signals. A charge controller within the panel helps to regulate the amount of solar power to the 12/5V battery. It maintains desirable amounts of current and voltage to ensure adequate power is supplied and longer battery life.
The power supply is also made of a boost converter which is used to step up the voltage from the input to its output. It ensures that a higher voltage is delivered to the battery when the photovoltaic cell receives less light. The boost converter is made of a transistor, a diode, and a capacitor, all in one unit. The voltage output ripple is reduced by using filters. The converter has two resistance values to help control the amount of power from the solar panel. The voltage from the booster is stored in the 12/5v battery. A regulator is also provided to regulate the voltage from 12 V to 5 V with the assistance of a current limiting resistor (Balaji and Sudha 204). Power emanating from the regulator is us…