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DP 499: FINAL YEAR PROJECT II
PROJECT TITTLE: DESIGN AND
IMPLEMENTATION OF AN AUTOMATIC
WATER TANK LEVEL CONTROL SYSTEM
AT MABIBO HOSTEL
NAME: MTEGA, BenedictDEGREE PROGRAM: BSc IN EPE
REG NUMBER: 2008-04-03368
SUPERVISOR: Dr. B.J.KUNDY
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INTRODUCTION
In tall buildings and in homes where the pressure
of water is insufficient for them to have a normal
flow in the water piping systems, water pumping
systems are inevitable.
As long as there is water pumping system, the
control mechanism of it is inevitable too.
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PROBLEM STATEMENT
Currently, the water pumping system at Mabibo
Hostel is manually operated and leads to the
following problems:-
Insufficient water management
Pump damage (Motor damage)
Unreliable water supply in the buildings
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PROJECT OBJECTIVES
The objective of the project was to design and
implement an automatic water level control
system that will be able to start and stop the pump
automatically depending on the water levels in the
overhead tank and the main reservoir tank which
is on the ground level.
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SYSTEM DESIGN
The design of the system comprised the design of
the following parts:-
Type of the sensors to be used
Decision making unit
Pump switching mechanism
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DECISION LOGIC TABLE FOR CONTROL UNIT
Reserve tank
sensor
Overhead tank sensors (two sensors) Pump Overhead tank Reserve tank
Sensor1 Sensor2(full) Sensor3(1/4)
0 0 0 Off X Empty
0 0 1 Off X Empty
0 1 0 Off X Empty
0 1 1 Off X Empty
1 0 0 On Empty Water exist
1 0 1 On Water exist
1 1 0 On No such Water exist
1 1 1 Off Full Water exist
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RESULTS OF THE DESIGN
After the designing process, I came up with the
circuits as shown in the figures below:-
Sensors which are selected for the system, are just
the electrodes immersed in water tanks.
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DECISION MAKING UNIT CIRCUIT
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THE GENERAL CONTRAL CIRCUIT
With a Microcontroller as the brain of the circuit
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RESULTS DISCUSSION
The designed circuit were simulated using the
ISIS professional software to check its
consistence and it ran successful.
The prototype of the circuit is constructed to
demonstrate its operation.
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CONCLUSION
Water is one of the most important basic need in all living
things. Being important, it must be well managed to
ensure that there is no wastage of it.
This project has provided one of the best method for water
management.
It is the best method because, it is flexible, economical
and easy configurable system.
The low cost PIC 16F877A Microcontroller has been
used in this project which is the key point to reduce cost.
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RECOMMENDATION
Due to the flexibility of the system and the programmablecharacteristics of the PIC 16F877A Microcontroller
In future time, the control system can further be extended
to the other functions using the same PIC 16F877A
Microcontroller like testing the saltiness of the water etc.
Also the control mechanism can further be extended up to
being a web-based water level monitoring and controlling
network which flexibility would offer us to control this
system from any place via internet even with different
type of devices
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Thank you for listening
MAY GOD BLESS YOU ALL
THANK YOU