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TITLE PAGE

 

BY

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--/H2013/01430
DEPARTMENT OF ----
SCHOOL OF ---
INSTITUTE OF ---

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APPROVAL PAGE

This is to certify that the research work, "design and construction of a keypad control for multiple appliances" by ---, Reg. No. --/H2007/01430 submitted in partial fulfillment of the requirement award of a Higher National Diploma on --- has been approved.

By
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Supervisor                                                  Head of Department.
Signature……………….                           Signature……………….        

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External Invigilator

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DEDICATION
This project is dedicated to Almighty God for his protection, kindness, strength over my life throughout the period and also to my --- for his financial support and moral care towards me.Also to my mentor --- for her academic advice she often gives to me. May Almighty God shield them from the peril of this world and bless their entire endeavour Amen.

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ACKNOWLEDGEMENT

The successful completion of this project work could not have been a reality without the encouragement of my --- and other people. My immensely appreciation goes to my humble and able supervisor mr. --- for his kindness in supervising this project.
My warmest gratitude goes to my parents for their moral, spiritual and financial support throughout my study in this institution.
My appreciation goes to some of my lecturers among whom are Mr. ---, and Dr. ---. I also recognize the support of some of the staff of --- among whom are: The General Manager, Deputy General manager, the internal Auditor Mr. --- and the ---. Finally, my appreciation goes to my elder sister ---, my lovely friends mercy ---, ---, --- and many others who were quite helpful.

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PROJECT DESCRIPTION: This work "design and construction of a keypad control for multiple appliances" research material is a complete and well researched project material strictly for academic purposes, which has been approved by different Lecturers from different higher institutions. We made Preliminary pages, Abstract and Chapter one of "design and construction of a keypad control for multiple appliances" visible for everyone, then the complete material on "design and construction of a keypad control for multiple appliances" is to be ordered for. Happy viewing!!!

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Keypad control for multiple appliances is a device designed to on/off multiple appliances using a keypad.

This circuit employs DTMF technique to switch on/off up to ten appliances. The controller uses telephone-type keypad with 12 press-to-on switches. These switches are arranged in four rows (R1 through R4) and three columns (C1 through C3) using seven lines that are terminated at corresponding inputs of DTMF encoder UM91214B (IC1). IC1 generates 12 distinct dual-tone signals corresponding to the switch pressed. This signal is routed to the receiver using a wired link.  (It can also be used for remote control using IR or FM.)

The wired link unit can be operated off a 9V PP battery or using a suitable AC mains adaptor.

TABLE OF CONTENTS
TABLE OF CONTENT
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWLEDGEMENT
ABSTRACT
TABLE OF CONTENT
CHAPTER ONE
1.0      INTRODUCTION
1.1      OBJECTIVE OF THE PROJECT
1.2      SIGNIFICANCE OF THE PROJECT
1.3      SCOPE OF THE PROJECT
1.4      STATEMENT OF PROBLEM
1.5      LIMITATION OF THE PROJECT
1.6      APPLICATION OF THE PROJECT
1.7      PROJECT ORGANISATION
CHAPTER TWO
2.0      LITERATURE REVIEW
2.1      REVIEW OF HOME APPLIANCES
2.2      HISTORITICAL BACKGROUND OF THE PROJECT
2.3      MAJOR APPLIANCES
2.4      MINOR APPLIANCES
CHAPTER THREE
3.0      CONSTRUCTION
3.1      BLOCK DIAGRAM
3.2      CIRCUIT DIAGRAM
3.3      SYSTEM OPERATION
3.4      CIRCUIT DESCRIPTION
3.5      DESCRIPTION OF COMPONENTS USED

CHAPTER FOUR
4.0      RESULT ANALYSIS
4.1      CONSTRUCTION PROCEDURE AND TESTING
4.2      CASING AND PACKAGING
4.3      ASSEMBLING OF SECTIONS
4.4      TESTING OF SYSTEM OPERATION
4.5       INSTALLATION OF THE COMPLETED DESIGN
4.6      COST ANALYSIS
CHAPTER FIVE
5.1      CONCLUSION
5.2      RECOMMENDATION
5.3       BIBLIOGRAPHY

 

CHAPTER ONE
1.1                                                        INTRODUCTION
In present times there are many types of Home Automation Systems which are available in the market. Most of these are simple Home Appliances Controlling Systems like DTMF controlled Home Appliances, GSM based Home Appliances Controlling, RF based Home Appliances Controlling. Here we are going to discuss about TV or DVD Remote Control LED Home / Office Appliances Control (Home Automation System) using Arduino Board.
In this project, TSOP (IR Receiver) is connected with Arduino. Arduino receives encoded signal coming from IR Remote and then decodes by using IRremote.h library, which is easily available on internet (Find this library by typing on Google IR remote library for Arduino). After decoding the signal, compare decoded signal with defined value, if the match occurs then perform related function or switching on/off related relay by using digital input/output. Here AC load is used for demonstration. Three Home/Office Appliances are used for demonstration. In which one zero watt bulb indicated by light 1 and second is 100 watt bulb indicated by light 2 and third and last is TV/LCD indicated by TV.  LCD is also added in this system for displaying the current status of Appliances like TV ON, TV OFF, light 1 ON, light 1 OFF, light 2 ON, light 2 OFF, ALL ON, ALL OFF etc.

1.2                                         THE OBJECTIVE OF THE PROJECT
The objective of this work is to design a relay based 4X4 Keypad controlled home appliances system with AVR ATmega16 microcontroller Part-I. Here, we will use the 4X4 keypad as the input device to control the appliances i.e 2 bulbs and 2 fans.

1.3                                         SIGNIFICANCE OF THE PROJECT

• With this device multiple appliances can be controlled in homes, even in offices.
• It is cheap when considering the number of control it can handled.
• It is microcontroller based, therefore number of load it carries can be adjusted

1.4                                                 SCOPE OF THE PROJECT
Here, we will use 2 keys of the Keypad to control one appliance. One key will be used to turn on and the other key will be used to turn off the appliance. So, for four appliances, we will use 8 keys of the keypad. Apart from these 8 keys, we will use 2 more keys to turn on and off all appliances at a time. Now, press different keys of the 4X4 keypad and control your appliances.

1.5                                     STATEMENT OF THE PROBLEMS
In every home, office or industries, keypad appliances plays a vital role, that is, It provides a means of switching appliances of different power rating using relay; This project has been improved on the existing types of electromechanical device that has being in use over the years.           
In the course of designing this project, different kinds of problem was notice such as:

• Difficulty in troubleshooting with circuit without the circuit diagram
• Difficulty in connecting the circuit, without the circuit diagram.
• Difficult in wiring because of the strong wiring the project required..

1.6                                        LIMITATION OF THE PROJECT
This work covers only using 4*4 keypad and using it to control upto eight different home appliances, and it is microcontroller based.

1.7                                          APPLICATION OF THE PROJECT
Applications of this project are not in homes but it can also be applies in other places such as:

• Small and Medium Scale Industries
• Offices.

1.7                                        PROJECT WORK ORGANISATION
The various stages involved in the development of this project have been properly put into five chapters to enhance comprehensive and concise reading. In this project thesis, the project is organized sequentially as follows:
Chapter one of this work is on the introduction to this study. In this chapter, the background, significance, objective limitation and problem of this work was discussed.
Chapter two is on literature review of a variable dc motor drive. In this chapter, all the literature pertaining to this work was reviewed.
Chapter three is on design methodology. In this chapter all the method involved during the design and construction were discussed.
Chapter four is on testing analysis. All testing that result accurate functionality was analyzed.
Chapter five is on conclusion, recommendation and references.

CHAPTER FIVE
5.1                                                       CONCLUSION
At the end of this work a 4 by 4 keypad controlled appliances was constructed, meaning that the aim of this work was met. We  use 2 keys of the Keypad to control one appliance. One key will be used to turn on and the other key will be used to turn off the appliance. So, for four appliances, we will use 8 keys of the keypad. Apart from these 8 keys, we will use 2 more keys to turn on and off all.

5.2                                                RECOMMENDATION
Carrying-out this work by final year student is a right thing and at the right time.
This work was built with quality wiring and contains many connections, I recommend that if failure occur, it should be troubleshoot by a qualify personnel along with the circuits diagram.
This project was built for Educational purposes. If one want to use it for industrial or home applications, and it carries AC source on the relay contacts. I recommend any student handling should be one that have work for AC circuit before and must be conscious of the ac signal to avoid electrocution.

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CHAPTER TWO: The chapter one of this work has been displayed above. The complete chapter two of "design and construction of a keypad control for multiple appliances" is also available. Order full work to download. Chapter two of "design and construction of a keypad control for multiple appliances"consists of the literature review. In this chapter all the related work on "design and construction of a keypad control for multiple appliances" was reviewed.

CHAPTER THREE: The complete chapter three of "design and construction of a keypad control for multiple appliances" is available. Order full work to download. Chapter three of "design and construction of a keypad control for multiple appliances" consists of the methodology. In this chapter all the method used in carrying out this work was discussed.

CHAPTER FOUR: The complete chapter four of "design and construction of a keypad control for multiple appliances" is available. Order full work to download. Chapter four of "design and construction of a keypad control for multiple appliances" consists of all the test conducted during the work and the result gotten after the whole work

CHAPTER FIVE: The complete chapter five of "design and construction of a keypad control for multiple appliances" is available. Order full work to download. Chapter five of "design and construction of a keypad control for multiple appliances" consist of conclusion, recommendation and references.

 

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