1.0 Introduction
Automatic water pump operator is a device which automates the ON or OFF and other controlling mechanisms of the water pumps which are used in many industries and houses. This device correctly calculates the exact moment to turn NO or OFF the water pump base on the water level in the storage tanks. As a result there is no chance for the pumps to get burned and there is no wastage of water which was the basic problem in the manual water pump system. Automatic water pump operator is used to control the water pump motor.
The motor gets automatically switched on when water in the over head tank (OHT) falls below the lower limit similarly it gets switched off when the tank is filled up. Built around only an AND gate I. this circuit is simple, compact and economical. It uses a 12V DC power supply and consumes very little power. The circuit can be divided into two parts controller circuit and indicator circuit. The controller circuit is one which is use for the purpose of controlling the water pump action. When the water level reaches a maximum level the motor turns off and when the water level goes below the minimum level the motor turns on automatically.
This circuits consists of a NAND gate IC, transistors, relays with specification 12V, 200 OHM IC/o, diodes, the indicator circuit is one which is use to indicate the level of water inside the tank depending upon the number of LEDs that glow we can determine the water level in the tank. This device is very much useful to curb the over flow of water in overhead tanks which in turns favors conservation of water. With further advancement, it can be use to check the level of water in dams.
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