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  • Topic: GSM, Rectifier, Mobile phone
  • Pages : 42 (10328 words )
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  • Published : April 20, 2013
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TABLE OF CONTENTS

CHAPTER ONE: INTRODUCTION

1. Introduction
2. Methodology
3. Scope of Work
4. Aims of the GSM Electronic Notice Board
5. Objectives of the GSM Home Appliance Control Device

CHAPTER TWO: THEORETICAL BACKGROUND AND LITERATURE REVIEW

2.0 Theoretical Background

2.1GSM Architecture

2.2Technical Details

2.3 Main Cellular Standards
2.4GSM Frequencies

2.5 Network Structure

2.6 Subscriber Identity Module (SIM)

2.7 Literature Review

2.8 GSM Security

2.9 Circuit Diagram of the GSM Electronic Home Appliance Device and Power Supply

2.10 Components list of gsm based home appliance device

CHAPTER THREE: DESIGN AND CONSTRUCTION

3.1GSM Modem

3.1.1 Accessing GSM MODEM using Microsoft HyperTerminal

3.2 Testing of GSM Modem

3.3List of Important AT Commands

3.4 Microcontroller – MODEM Interfacing

3.4.1. DTE and DCE

3.4.2. RS-232

3.4.3. RTS/CTS Handshaking

3.4.4. Specifying Baud Rate, Parity & Stop bits

3.4.5 DCE Baud Rates

CHAPTER FOUR: TESTS, RESULTS, AND DISCUSSION

4.1Testing a DB-9 RS-232 serial port in HyperTerminal

4.2Testing and Observations

4.3Operational Flowchart

4.4Initializations

4.4.1Serial transfer using TI and RI flags

4.4.2Validity Check

4.4.3Display

4.5Programmer

4.6Simulator

4.6Burner

CHAPTER FIVE: RECOMMENDATION AND CONCLUSION

5.1Conclusion

5.2Problems Encountered

5.2Future Improvement

5.3Recommendation

REFERENCES

APPENDIX A: USER’S MANUAL

APPENDIX B: TROUBLESHOOTING MANUAL

APPENDIX C: PROGRAM FLOWCODE

APPENDIX D: CONSTRUCTION STAGES

CHAPTER ONE
1. Introduction
GSM and GPRS based Designs have developed another innovative and Public utility product for mass communication [1]. This is a Home Appliance Control Device which control the home appliances through messages received as SMS or GPRS Packets and also send acknowledgement of task. Such Devices can be used at different areas of the human being life. Such offices, houses, factories et, sent command from Mobiles or PCs to these devices for on and off the devices . These devices are designed to remotely control the devices from anywhere and anytime. Wireless communication has announced its arrival on big stage and the world is going mobile [2]. We want to control everything and without moving an inch. This remote control electronic device is possible through Embedded Systems. The use of “Embedded System in Communication” has given rise to many interesting applications that ensures comfort and safety to human life [3]. The main aim of the project will be to design a SMS electronic Home Appliance Control toolkit which can replace the traditional Home Appliance Control Devices. The specific home appliance is on/off sent through a SMS from an authorized mobile phone. The toolkit receives the SMS, validates the sending Mobile Identification Number (MIN) and perform the desired information after necessary code conversion. The system is made efficient by SIMs so that the SMS can be received by number of devices boards in a locality using techniques of time division multiple access. The main components of the toolkit include microcontroller, GSM modem. These components are integrated with the display board and thus incorporate the wireless features. The GSM modem receives the SMS. The AT commands are serially transferred to the modem. In return the modem transmits the stored message through the wireless link. The microcontroller validates the SMS and then perform specific task on the device. The microcontroller used in this case is ATMEL AT89S52 .Motorola W220 is used as the GSM modem. In this prototype model, LCD display is used for simulation purpose. The results presented in the thesis support the proper functionalities and working of the system. The timing diagram suggests the...
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