Water level control based fuzzy logic controller: simulation and experimental works

Abstract

This paper presents an automatic control system for Water Level Control (WLC) using Fuzzy Logic Controller (FLC). The use of FLC on the WLC system so that it can work automatically regulates the rotation speed of the motor (water pump). This system uses the input of Light-Dependent Sensor (LDR) as a light detector sensor outside space and ultrasonic detection sensors as the height of the water. As for the output of the motor rotation be as a replacement water pump for filling water in the reservoir of the water automatically. The working principle of this system is in a light sensor to detect outdoor LDR and Ultrasonic Sensor obstructed water level then the sensor will provide the input signal to the microcontroller in the form of Analog data when it is converted into a digital form signal using an Analog to Digital Converter (ADC). The data is processed using the FLC algorithm. The results show that the lighter in the outdoors and higher low water, the water-pumping Motor speed the faster or maximal. As for when the high water is medium and a bright light or daylight then the speed of motor rotation is medium and at the time of the highest water is maximal then the motor will die. Conversely, if the light on the outdoor is darker or at night and water levels are low or medium, the motor rotation speed will be medium too.