Description
ABSTRACT
A smart home covers a variety of theoretical and practical approaches that deals with methodology of living today and in the future. Technology has influenced and changed the life of humans in many ways. To design a device that will be serviceable to others is a huge contribution to the society. Today mobile phones (smart phones, android etc.) can preforms almost all the tasks that once only PCs used to handle. With these advanced features and thought of elderly in mind, a device is designed. This device provides a much more advanced and a safer home to us. Bluetooth Home Automation System is a complex technology that uses information technology to control the electrical appliances and monitors the environment. The design and implementation presented in this paper is of a device which will use bluetooth technology for basic home automation and a wireless home network is desirable which does not incur any additional cost of wiring. The advantages and disadvantages are also discussed, along with the future scope and application areas.
TABLE OF CONTENTS
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWELDGEMENT
ABSTRACT
TABLE OF CONTENT
CHAPTER ONE
- INTRODUCTION
- BACKGROUND OF THE PROJECT
- PROBLEM STATEMENT
- AIM/OBJECTIVES 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 CIRCUIT DESCRIPTION
3.6 CIRCUIT OPERATION
3.7 SYSTEM FLOWCHART
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
1.1 BACKGROUND OF THE PROJECT
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 (Alkar et al., 2015). 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 an AVR microcontroller based electrical appliances controlling system using cell phone bluetooth. 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 (Alkar et al., 2015). 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 an AVR microcontroller 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 PROBLEM STATEMENT
In the last decade, all home appliances are manually operated, and this sometimes exposes the user to the risk of electric shock, and which also cause time wastage and also involves labour, but today the story has challenge which brought solutions to these problems by controlling home appliances wirelessly. Here, the project is based on Bluetooth control home automation system, which could help to save energy like electricity and lots of physical strength. It could be secure, flexible, help to prevent power and more accurate outcomes. Most of houses in the cities of the developed countries now using bluetooth based home automation system to prevent energy and ensure adequate safety.
1.3 OBJECTIVE OF THE PROJECT
The main aim of this study is to build a bluetooth home automation system based on AVR microcontroller.
The objectives of this project are:
- To build the system prototype
- To enable users to remotely control their home appliances and systems using a cell phone bluetooth.
- To reduce the risk involved in manual operation of appliances.
1.4 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 arduino 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.
1.5 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.
1.6 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.
1.7 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 arduino.
1.8 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.
1.9 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.
CHAPTER FIVE
5.1 CONCLUSION
The various methods of designing automated home appliances were adopted in this paper. However, various components were designed and tested separately and collectively to ensure it does meet the specification of the end-users by avoiding the incident of fire outbreak as a result of failure to switch off the electronic gadgets which may get burnt when there is slight power surge. This makes the control of all home appliances to be easy to deal with as against the manual way.
