TABLE OF
CONTENTS
CHAPTER ONE
INTRODUCTION
1.1 Background of study
1.2 Statement of problem
1.3 Project Aims and objectives
1.4 Justification of study
1.5 Scope of the study
1.6 Project Report Organization
CHAPTER TWO
LITERATURE REVIEW
2.1 Brief History of tone Recognition Device
2.2 Automatic Speech Recognition (ASR)
2.3 Related works
2.4 DTMF Decoder
2.5 MICROPROCESSORS EVOLUTION: HISTORY AND OVERVIEW
2.6 TYPES OF MICROPROCESSORS
2.6.1 Dedicated or embedded controllers
2.6.2 BIT SLICE PROCESSORS
2.6.3 GENERAL PURPOSE CPUs
CHAPTER THREE
SYSTEM
ANALYSIS AND DESIGN
3.1 METHODOLOGY
3.1.1 System Analysis
3.2 DATA COLLECTION
3.3 ANALYSIS OF THE EXISTING SYSTEM.
3.4 LIMITATIONS OF
THE EXISTING SYSTEM
3.5 SYSTEM DESIGN
3.5.1 Transformer
3.5.2 RELAY
3.5.3 RESISTORS
3.5.4 Transistors:
3.5.5 Resonance in Crystal Oscillator
3.5.6 DIODES
3.5.7
RECTIFIERS
3.5.8 CAPACITORS (SMOOTHING)
3.5.9 THE LIGHT EMITTING DIODE (LED)
3.6 POWERS SUPPLY UNIT
3.7 DTMF Decoder using MT8870DE
3.8 SWITCHING UNIT
3.8 MICROCONTROLLER UNIT
3.10 TOP DOWN DESIGN
CHAPTER FOUR
IMPLEMENTATION, TESTING AND
INTEGRATION
4.1 CHOICE OF DEVELOPMENT TOOLS
4.2 SYSTEM REQUIREMENT
4.2.1 Software requirement
4.2.2
System hardware
requirement
4.3 IMPLEMENTATION
4.4 TESTING
4.5 TESTING OF
THE INDIVIDUAL COMPONENTS.
4.6 UNIT BY UNIT
TESTING.
4.7 SYSTEM
TESTING.
4.8 PACKAGING
CHAPTER 5
SUMMARY, RECOMMENDATIONS AND CONCLUSION
5.1 SUMMARY OF FINDINGS
5.2 LIMITATION OF STUDY
5.3
RECOMMENDATION
5.4 BEME (BILL OF ENGINEERING MEASUREMENT OF
ENGINEERING)
5.5 CONCLUSION
REFERENCES
CHAPTER ONE
INTRODUCTION
1.1 Background of study
Has technology transformed
humankind into omniscient being? Years back, communication was done through
difficult means like travelling to the destination of the second party, posting
letters est. Today people can communicate easily through various means like
e-mailing, face booking, GSM etc. The new age of technology has redefined
communication, most people nowadays have access to mobile phones and thus the
world indeed has become a global village. At any given moment, any particular
individual can be contacted with the mobile phone. But application of mobile
phones cannot be restricted to sending SMS or starting conversation. New
innovation and ideas can be generated from it that can further enhance its
capabilities. Technologies such as infra-red, Bluetooth etc which has developed
in recent years goes to show the very fact that improvement are infact possible
and those improvement have eased our life and the way we live. Remote
management of several home and offices appliances is a subject of growing interest
and in recent years we have seen many systems providing such controls.
These days, apart from supporting voice calls, a mobile
phone can be used to send text message as well as multimedia message (that may
contain pictures, graphics, animation, etc). Sending written text messages is
very popular among mobile phone users. Instant messaging as it is known, allows
an individual to share ideas, opinions and other relevant information. I have
used this to design a system that allows a platform to receive calls which
infact are commands sent to control different appliances and device connected
to the platform. The design of this control system system is based on the GSM
technology that effectively allows control from a remote area to the desired
location. The application of the suggested system is immense in the ever
changing technological world. It allows a greater degree of freedom to an
individual whether it is controlling the household appliances or office
equipments. The need to be physically presenting order to control appliances of
a certain location eliminated with the use of this system.
The research is borne out of the need for man to control
electrical devices that are remotely located to him. Anything from home devices
such as alarms, heaters, air conditioner and so on, IT equipment such as
routers and servers can be controlled.
The desire for man to control an object that is remotely
located to him has been for many ages. However, the technology that meets the
perfect desire in this
respect has not been obtained, though there is increasing improvement in
technology that struggles to meet this need in terms of accuracy, speed, ease
of operation and limitless operation point. The introduction of the global
system for mobile communication (GSM) and particularly the use of hand-held
mobile phones brought the innovation of distance communication at remote
location. Based on this, research utilizes this facility for remote control of
systems and appliances, take for instance, a man on a journey inside his car
suddenly remembers that he left the air conditioner (AC) ON when it was
supposed to be OFF. The normal condition is to drive back and switch OFF. But
with the GSM mobile phone in the hand, one looks on how the same could be used
to effect control at any point and time.
1.2 Statement of problem
Technology has advanced so much in the last decade or two
that it has made life more efficient and comfortable. The comfort of being able
to take control of devices from one particular location has become imperative
(i.e. important) as it saves a lot of time and effort. Therefore there arises a
need to do so in a systematic manner which will be implemented in the proposed
system. The system is an extended approach to automating a control system. With
the advancement and breakthrough in technology over the years, the lives of
people have become busier than before. With the adoption of this system, we can
gain control over certain things that require constant attention. The application of
this system comes in handy when people who forget to do simple things such as
turn ON or OFF devices at their homes or at their offices. They can now d so
without their presence by the transmission of a simple call from their mobile
phone. This development , I believe will ultimately save a lot of time
especially when people do not have to come back for simple things such as to
turn ON or OFF at their homes or at their office once they set out for their respective
work or appointment.
1.3 Project Aims and objectives
The project “GSM control
system” as the title suggests is aimed to construct a control system that
enables the complete control of the interface on which it is based.
General objectives of the project
are :
a.
To co-ordinate appliances and other devices through calls.
b.
To effectively receive and transmit data via calls.
c.
To eliminate the need of being
physically present in any location for tasks involving the operation of
appliances with household/office.
d.
Minimize power and time wastage.
e.
It allows a great degree of freedom
to an individual.
1.4 Justification of study
o
The proposed project can be used as a reference or as a base
of realizing a scheme
to be implemented in other project of greater level such as device
synchronization, temperature updates, weather forecasting etc.
o
The project itself can be modified to achieve a complete
home automation system
which will then create a platform for the user to interface between himself and
the household.
o
It can be used by companies for management purpose example
is switching ON/OFF
the server in other to manage the bandwidth.
1.5 Scope of the study
The project covers
the aspect of just being able to switch ON/OFF any electrical appliance
connected to the circuit.
1.6 Project Report Organization
The project is designed to have
five chapters, which will explain in details the various aspects of system. The
first chapter gives an introduction to GSM control system along with the
project aims and objectives, with emphasis to the scope in order to achieve the
desired goal and limitations to the study.
Chapter two is on literature
review which contains a review of previously implemented systems.
Chapter three contains the
details of the entire major component that were used in the actualization of
the hardware part of the project.
Chapter four deals
with the implementation and the testing, the chapter contains the major work of
the project.
Chapter five
summarizes and concludes the project work on GSM – Based Remote switching
system. Recommendations are also stated.
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