TABLE OF CONTENTS
CHAPTER ONE: INTRODUCTION
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
2.3 Main Cellular Standards
Subscriber Identity Module (SIM)
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
Accessing GSM MODEM using Microsoft HyperTerminal
Testing of GSM Modem
List of Important AT Commands
Microcontroller – MODEM Interfacing
DTE and DCE
3.4.4. Specifying Baud Rate, Parity & Stop bits
DCE Baud Rates
CHAPTER FOUR: TESTS, RESULTS, AND DISCUSSION
Testing a DB-9 RS-232 serial port in HyperTerminal
Testing and Observations
Serial transfer using TI and RI flags
CHAPTER FIVE: RECOMMENDATION AND CONCLUSION
APPENDIX A: USER’S MANUAL
APPENDIX B: TROUBLESHOOTING MANUAL
APPENDIX C: PROGRAM FLOWCODE
APPENDIX D: CONSTRUCTION STAGES
GSM and GPRS based Designs have developed another innovative and Public utility product for mass communication . 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 . 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 . 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...
References: 6. Introduction to Robotics – P.J.Mc Kerrow, Addisson Wesley, USA, 1991 Bernard Sklar, Digital Communications: Fundamentals and Applications, Prentice Hall, 2001.
13. Jörg Eberspächer and Hans-Jörg Vögel. GSM switching, services and Protocols. John Wiley and Sons, 1999.
14. Klaus Vedder GSM: Security, Services, and SIM. State of the art in Applied Cryptography. Course on Computer Security and Industrial Cryptography. Leuven, Belgium, June 3-6, 1997.
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