Automated Liquid level controlling and monitoring system

Plonnnaruwa is a remote in Sri Lanka and Water is very precious in that area. But, one of the student in Polonnaruwa noticed that a considerable amount of water is being wasted in houses through their water tank.
So, he wanted to stop this wastage and he wanted an innovative approach to this problem. He presented his idea to Prototyping innovation and we have worked out designed a system to stop this wastage and save water.

This system checks the liquid level of a tank and supply liquid to the tank when necessary. When the liquid level of the tank is low then the liquid is pumped to the tank automatically by opening the liquid inlet valve and vice versa.
And, this system also measures the liquid level in the tank (centimeter), and the volume of the liquid inside the tank (liter), and when the liquid is filling in the tank the water level at that moment and also the liquid flow rate and it is displayed in the LCD attached to the system. 

When the liquid level in the tank is low sensor sends a signal to the Microcontroller and as per the algorithm the microcontroller sends out a current signal to a relay module and using that relay the water inlet valve is opened and the liquid gets filled into the tank. And, this valve remains open until the water level approaches the HIGH level.

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