Download Independent Project - Indian Institute of Technology

No More Splash !!
ByAgam Agarwal (CS12B1003)
Sachin Jaiswal (CS12B1033)
Saurabh Bhati (EE12B1044)
Indian Institute of Technology
Hyderabad
Introduction to the Project
A large amount of the valuable resource “Water” is wasted due to
overflow in house tanks. The prime reason for this is that people
forget to switch off the motor pumps. Our device does this work for
them.
The Basic Plan
Water
level alarm
circuit
B
M
A
Circuit
Prototype
What does it do?
• When the switch is closed, the motor
starts to work and fill in water in the
tank.
• As soon as the tank is completely filled
up the motor turns off and a buzzer
starts to ring.
• If some water is taken out of the tank,
the buzzer switches off again and the
motor starts working.
• The motor can be manually switched off
by opening the switch.
How does it work?
• When the tank is completely filled up
the two probes A and B get connected
to each other through water.
• This triggers the IC and makes it
generate square waves from pin 3.
• The base of the NPN transistor
connected through pin 3 gets high
voltage and current passes through the
transistor and thus through the coil of
the relay.
How does it work?
• This switches on the relay thus
connecting the common pin of the relay
to the NO pin.
• The motor is connected to NC pin so it
turns off and the buzzer is connected to
NO pin so it starts to ring.
• On opening the switch, the power
supply to the circuit stops and the motor
and the buzzer, both turn off.
Where can it be implemented?
• All kind of water tanks
 Household water tanks
 Water tanks at schools
 Even at the water tank at the
hostels which overflow and waste
a lot of water when the guards
forget to turn off the motor
• The buzzer part can be used in dams
and river banks as a warning signal