ATTENTION:
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PLEASE READ THE INFORMATION BELOW.THANK YOU!
INFORMATION:
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PROJECT COSTS N5000 ONLY. THE FULL INFORMATION ON HOW TO PAY AND GET THE
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AUTOMATED LIQUID LEVEL
MANAGEMENT SYSTEM
CHAPTER ONE
1.0 INTRODUCTION
Liquid has always been paramount to life on earth. The
importance of liquid to life generally cannot be over emphasized. Generally
without it life could have been so terrible. Considering the benefit and joy it
has brought to life it needs to be monitored critically. The most dramatic
thing about most liquid is that they need to process from it combined or impure
form to a pure form before it can be used for its purposes. Because of it
benefit and the long process involve in getting pure form of liquid a care
needs to be taken as to avoid wastage of this pure liquid. Liquid is
fundamental to all life on earth; while many people may still take its ease
availability for granted, growing demands on the world s liquid resources
highlight the importance of liquid to everyday life activity.
As many automobile devices e.g. cars, motorcycle, generator
and many others cannot work without the aid of a certain liquid(fuel) this also
shows the vast application of liquid even in an automobile industries all over
the world. A very high percentage of world energy is harness from liquid
(petroleum).
Nowadays everybody has overhead tanks at their homes. But
everyone who has a water tank above knows the kind of problems they are facing.
Firstly there is no system to track the water level in the
tank. Then there come a secondary problem that is when water is to be pumped
and when pumping is to be stopped that prevent spilling of water out from the
tank. Due to these challenges, there is wastage in energy and liquid.
Earlier on, there were several methods (traditional ways) for
tracking the level of liquid in a tank. Like tapping down the side of the tank
until changes in sound is heard or removing the cover and dipping in a
measuring stick. The above stated methods are unreliable, inaccurate, and
sometimes stressful and time consuming, especially when the tank is placed at a
greater height or in an underground. Therefore the need for modern liquid level
indicator arises so as to eradicate/reduces the above stated challenges.
The modern liquid level indicator is used to show the exact
level of liquid in an overhead tank or a reservoir. It display percentage level
of the liquid on the display unit i.e by showing 100% when the tank if filled
up, 0% when there is no water and some calibrated percentages. At a certain
level (critical level) the system begins to generate sound to draw human
attention to this critical level so as not to run out of liquid unaware. The
liquid level indicator operates on the principle of floatation. As long as the
floater (sensor) floats on the surface of the liquid, increase or decrease in
the level of the liquid causes the upward and the downward movement of the
floater respectively.
The modern liquid level indicator saves time, energy,
maintain liquid level, and prevent liquid overflow and same time sure that
enough liquid is left in the tank.
1.1 AIMS AND OBJECTIVES
The design and construction of liquid level indicator is
aimed at achieving the following goals.
To design and construct an electronic device that will
conveniently indicate the level of any liquid in a tank or a reservoir
To regulate the usage of the liquid in various places to
which its been used
To ease the difficulties encountered when trying to know the
exact level of liquid in an overhead or underground
To know the precise and accurate level of the liquid in a
container
1.2 SCOPE OF WORK.
The circuitory can be used to check the level of any liquid
be it conductive or nonconductive as the design deals with the principle of
floatation by changing the floater with the rest of the circuit remaining the
same
1.3 METHODOLOGY AND SOURCE OF MATERIALS
The entire circuit diagram was first designed on proteus ISIS
professional after which it was simulated and confirmed working perfectly. Each
sub-unit of the circuit design on proteus ISIS professional software was
transferred into breadboard with appropriate tests carried out. These sub-units
design was now integrated to form the complete circuit of the system still on
breadboard and was tested working which serves as a replica of how the work
will ought to have been if it were to be on permanent (vero) board.
After confirming the workability of the system on breadboard
it was now transferred into veroboard that was finally coupled with the
constructed container whose content is to be measured
The entire electronics component used in the process of
project design/construction was obtained locally from the market. Electronic
books were also consulted as part of materials used which were referenced after
the completion of the work
1.4 OVERVIEW OF THE DESIGN
The liquid level indicator consists of a power supply unit,
sensing unit, control unit, and relay unit. The sensor (floater) moves up and
down depending on the rise and fall in the level of the liquid. As the floater
moves it varies the resistance of the variable resistance attached to the
container. The variable signal from the resistor is now fed into the
analoguedigital converter (ADC).
The ADC output digital signal is now sent to the micro-chip,
the micro-controller now processes the signal being sent into it and it now
instruct the 7-segment display to show the equivalent percentage level of the
liquid.
As a result of this detection and control, the fuel level in
the reservoir will be known and maintained as long as there is power supply.
1.5 SIGNIFICANCE OF THE PROJECT
The project focused on determination of liquid level in a
fuel reservoir or fuel tank. It is believed that the findings in this project
work will be of assistance to the following:
The control of water in overhead tanks by user.
The determination of petroleum product level in storage
reservoir or tanks
1.6 PROJECT OUTLINE
Chapter one: This chapter gives a general introduction to the
project. Aims and objectives, scope of work and significance of the project are
also contained in this chapter.
Chapter two: This chapter covers the literature review that
highlights previous work of the subject and also the level measure techniques
which also show an in-depth look at various components and sub-circuits that
make up the system.
Chapter three: This chapter contains the principle of
operations and the detailed circuit design and the analysis of the project.
Chapter four: This chapter covers all the details of the
construction and testing procedures employed to achieve the final product. It
spans simulation of the circuit diagram on the computer, bread boarding and
soldering of the components on the vero board, casing construction, test
precautions taken, troubleshooting and result obtained, as well as the
difficulties encountered, in the course of the construction and testing.
Chapter five: The chapter contains the conclusion drawn from
the results of the testing, with reference to the objectives and goals of the
project. The chapter also contains the recommendation for further work on the
project topic in future.
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