Design and Construction Water Tank Overflow Indicator

Student: Mubarak Olawale Oriolowo (Project, 2025)
Department of Computer Engineering
Lens Polytechnic, offa, Kwara State.

Abstract

ABSTRACTThis project is titled the design and construction of a water level sensor system. It is designed to indicate the level of water to over-head tank. It not only indicates the amount of water present in the overhead tank but also gives an alarm when the tank is full.When the water is empty the wires in the tank are open circuited and the 180K resistors pulls the switch low hence opening the switch and LEDs are OFF. As the water starts filling up, first the wire in the tank connected to S1 and the + supply are shorted by water. This closes the switch S1 and turns the LED1 ON. As the water continues to fill the tank, the LEDs2 , 3 and 4 light up gradually.When the water is full, the base of the transistor BC148 is pulled high by the water and this saturates the transistor, turning the buzzer ON. The SPST switch has to be opened to turn the buzzer OFF.

Keywords
design construction water overflow indicator
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