Design And Construction Of A Home Automation Using Bluetooth Control

ABSTRACT

Smart Home is a house that uses information technology to monitor the environment, control the electric appliance and communicates with the outer world. Smart Home is a complex technology, at the same time it is developing. A sample house environment monitors and control system that is one branch of the Smart Home is addressed in this paper. The system is based on the embedded system and can act as a security guard of the home. The system can control electrical appliances.

The whole system is a cheaper one, but it provides the full-scale home device monitor and control function. By using the embedded system technique, it is convenient to use and allows simple installation in existing homes, it provide a safe, convenient home to us. The shortage of the system is only can turn on/off the electric appliances and the lack of the wireless function. With the Development of the smart electric appliances, the system must make much progress.

TABLE OF CONTENTS

 TITLE PAGE

APPROVAL PAGE

DEDICATION

ACKNOWELDGEMENT

ABSTRACT

TABLE OF CONTENT

CHAPTER ONE

• INTRODUCTION
• AIM/OBJECTIVE OF THE PROJECT
• SCOPE OF THE PROJECT
• OPERATING ENVIRONMENT
• LIMITATIONS OF THE PROJECT
• PROBLEMS AND ASSUMPTIONS OF THE PROJECT
• APPLICATIONS OF THE PROJECT
• SIGNIFICANCE OF THE PROJECT
• PROJECT WORK ORGANISATION

CHAPTER TWO

2.0      LITERATURE REVIEW
2.1      OVERVIEW OF THE PROJECT
2.2     HISTORICAL BACKGROUND OF THE PROJECT
2.3      REVIEW OF BLUETOOTH TECHNOLOGY

2.4      ORIGIN OF BLUETOOTH

2.5      ETYMOLOGY OF BLUETOOTH

2.6     IMPLEMENTATION OF BLUETOOTH

2.7     COMMUNICATION AND CONNECTION

2.8     USES OF BLUETOOTH

CHAPTER THREE

3.0       DESIGN METHODOLOGY

3.1      BASICS OF THE PROJECT

3.2     SYSTEM BLOCK DIAGRAM

3.3     DESCRIPTION OF SYSTEM BLOCK DIAGRAM

3.4    CIRCUIT DIAGRAM

3.5    COMPONENTS LIST

3.7    PROGRAM EXPLANATION

3.8    PROGRAME CODE

3.9    DESCRIPTION OF COMPONENTS USED

3.10  POWER SUPPLY UNIT

CHAPTER FOUR

4.0     RESULT ANALYSIS

4.1      CONSTRUCTION PROCEDURE AND TESTING ANALYSIS

4.2     CASING AND PACKAGING

4.3      ASSEMBLING OF SECTIONS

4.4    TESTING OF SYSTEM OPERATION

4.5     INSTALLATION OF THE COMPLETED DESIGN

CHAPTER FIVE

5.1      CONCLUSIONS

5.2      REFERENCES

CHAPTER ONE

1.0                                                        INTRODUCTION

Initially communication was done by travelling from kilometre to kilometre to deliver messages but now the trend involves talking to people even when they are far away around the globe even to the extent of seeing them using the present day 3G technologies. Now mobile phones can be used to trigger their greatest revolution: by allowing us to run our homes remotely. If you are heading home early on a sunny day to your house driving through traffic in Lagos, your mobile phone can be used to switch on your central air conditioner at the touch of a keypad or even turn on your water heater system on a cold night preparing yourself for a warm shower. Fitted to a kitchen wall, the unit will communicate with tiny transponders attached to air conditioners, fridges, washing machines, microwave ovens and household appliances.

This paper presents design and construction of a microcontroller based electrical appliances controlling system using cell phone. A cell (mobile) phone bluetooth acts as a modem for the control of electrical home appliances. This is achieved when the mobile phone number is dialed and an appropriate command button is pressed. The paper demonstrates how to develop a system that aids the control of remote devices using mobile phones to enable devices without infrared though connected to power sources to be controlled and considering the possibility of users to monitor the status and usage of these devices. It makes use of a AT89c51 microcontoller to control the switching of the output. This design is customized as a central device for four pieces of home appliances using relay to activate each of the respective electronic gadgets.

1.2                                             OBJECTIVE OF THE PROJECT

The objective of this project is to enable users to remotely control their home appliances and systems using a cell phone bluetooth.  To access the control unit, the user should on their bluetooth with the required/desired function/action to his/her home control system via GSM.  Upon being properly authenticated, the cell phone-based interface at home (control unit) would relay the commands to a microcontroller that would perform the required function/action, and return a function completion bluetooth that would be sent to the source of the original command (user’s cell phone).

1.3                                                 SCOPE OF THE PROJECT

This device allows for a user to remotely control and monitor multiple home appliances using a cellular phone. This system will be a powerful and flexible tool that will offer this service at any time, and from anywhere with the constraints of the technologies being applied. Possible target appliances include (but are not limited to) climate control systems, security systems, and lights; anything with an electrical interface.

The proposed approach for designing this system is to implement a microcontroller-based control module that receives its instructions and commands from a cellular phone blue tooth. The microcontroller then will carry out the issued commands and then communicate the status of a given appliance or device back to the cellular phone. For security purposes, a means of identification and user authentication will be implemented, and will combine caller identification with a password authorization.

1.4                                            OPERATING ENVIRONMENT

The control system will include two separate units: the cellular phone with bluetooth, and the control unit. There will therefore be two operating environments. The cellular phone will operate indoors and outdoors whereas the control unit will operate indoors within the temperature and humidity limits for proper operation of the hardware.

1.5                                          LIMITATIONS OF THE PROJECT

The following is a list of limitations for the project.

·        The device can only work when the user is within the Bluetooth coverage.

·        Only devices with electrical controlling input ports will be possible targets for control.

·        The receiver must have a power source (220vac) attached at all times.

·        Operation of the controlling unit is only possible through a cell phone with Bluetooth capabilities.

·        Bluetooth has a range of 10-15 meters, so this device can switch ON and OFF any electronic appliance within the range.

1.6                        PROBLEMS AND ASSUMPTIONS OF THE PROJECT

The following is a list of problems and assumptions for the project;

·        The user and control unit will establish communication via bluetooth.

·        The controlled appliances will have to have an electrical interface in order to be controlled by microcontroller.

1.7                                         APPLICATIONS OF THE PROJECT

This project can be used in Industries, This system can be employed in houses, where people often forget to switch off electrical appliances. We can extend this circuit to control many electrical devices with some modifications using 4 x16 decoder IC. This work is aimed toward average consumers who wish to control household appliances remotely from their cell phones provided that the appliances are electrically controllable.  Example of feasible appliances and applications under consideration include; enable/disable security systems, fans, lights, kitchen appliances, and adjusting the temperatures settings of a heating/ventilation/air conditioning system.

This system can be used in industrial applications. This system can be employed in houses, where people often forget to switch off electrical appliances. This system can be used to control AC’s to set the room temperature when we are outside. We can extend this circuit to control many electrical devices with some modifications using 4 x16 decoder IC.

1.8                                         SIGNIFICANCE OF THE PROJECT

Home Appliance Control using bluetooth can be used to turn on / off the devices and various appliances in our home. It can prove very useful for disabled people. This project can also be used in shop, offices, industry.Then user has to press various keys to control the devices. In this work:

• Quick response is achieved.
• Construction is easy.
• Easy to maintain and repair.
• Comparatively the operation cost is less.
• Design is efficient and low cost.
• Power consumption is low.
• Controlling electrical devices wirelessly
• Saves electricity (when we forget to switch off and go out).
• We can control appliances from any place round the globe.
• No coding is required.

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 study were discussed.

Chapter two is on literature review of this study. 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.