ABSTRACT
The advantage of cellular communication like GSM technology is a potential solution for such remote controlling activities. GSM-SMS technology can be used to control household appliances from remote places. Remotely, the system allows the home owner to monitor and control his house appliances via his mobile phone set by sending commands in the form of SMS message and receiving the appliances status as well. This system provides ideal solution to the problems caused in situations when a wired connection between a remote appliance device and the control unit might not be feasible. The system is wireless and uses the user’s mobile handset for control and therefore the system is more adaptable and cost effective. The system uses GSM technology thus providing ubiquitous access to the system for appliance control. With this hypothesis, three different approaches have been proposed and implemented in this project; FIRSTLY, home control switch/household appliances are controlled by server mobile which acts as remote control. SECONDLY, GSM-SMS messaging technology is used to control them from remote places and FINALLY, to provide a multiple agents environment.
TABLE OF CONTENTS
TABLE OF CONTENT PAGES
TITLE PAGE……………………………………………………………………………………………..i
CERTIFICATION……………………………………………………………………………………..ii
DEDICATION…………………………………………………………………………………………..iii
ACKNOWLEDGEMENT……………………………………………………………………………..iv
ABSTRACT………………………………………………………………………………………………v
TABLE OF CONTENT…………………………………………………………………………….vi-vii
LISTS OF FIGURES……………………………………………………………………………….viii-ix
CHAPTER ONE
1.0 INTRODUCTION……………………………………………………………………………….1
1.1 PROJECT OBJECTIVE…………………………………………………………………………2
1.2 SCOPE OF THE PROJECT……………………………………………………………………….3
1.3 OPERATION OF THE SYSTEM…………………………………………………………..4
1.4 ARCHTECTURE OF THE SYSTEM…………………………………………………………5
CHAPTER TWO
2. 0 LITERURE REVIEW……………………………………………………………………………..6
2.1 SYSTEM DESCRIPTION…………………………………………………………………………7
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2.1.1 USER GSM MOBILE HANDSET……………………………………………………….8-11
2.1.2 RECEIVER GSM HANDSET…………………………………………………………..12-13
2.2 MICROCONTROLLER BOARD……………………………………………………………..14
2.3 SWITCHING MODULE……………………………………………………………………….15
CHAPTER THREE
3.0 SOFTWARE DESIGNING…………………………………………………………………….16
3.1 TRANSFORMER……………………………………………………………………………17-19
3.2 TRANSFORMER CALCULATION……………………………………………………….20-26
3.3 RECTIFICATION PROCESS………………………………………………………………27-30
3.4 MICROCONTROLLER SECTION……………………………………………………….31 -35
CHAPTER FOUR
4.0 TESTING…………………………………………………………………………………………..36
4.1 SYSTEM TESTING………………………………………………………………………………37
4.2 PACKAGING……………………………………………………………………………………..38
4.3 TROUBLE SHOOTING THE DESIGN………………………………………………………39
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CHAPTER FIVE
5.0 PROBLEM ENCOUNTERED……………………………………………………………….40
5.1 PRECAUTIONS………………………………………………………………………………….41
5.2 RECOMMENDATION………………………………………………………………………..42
5.3 CONCLUSION…………………………………………………………………………………..43
5.5 APPENDIX……………………………………………………………………………………….44
5.4 PROGRAMME CODES……………………………………………………………………45-55
5.6 REFERENCE………………………………………………………………………………………56
CHAPTER ONE
INTRODUCTION
Nowadays, people’s expectations in their life quality are increasing as the
technology is improving rapidly. People need an affordable system (smart) that
can make their lives easier, more comfortable, and offer more safety.GSM based
home automation system is an electrical and electronic system designed to
control home appliance with a mobile phone. The two main technologies
applied in the system are GSM and PLC. GSM stands for global system for mobile
communication and PLC stands for power line communication. In this study,
Nokia 6100 is chosen as the GSM phone that receives command and transfers it
to controller. Due to rapidly advancing of mobile communication technology and
widely availability make it possible to incorporate mobile technology into home
automation systems. ’’AT’’ command is used as communication between GSM
phone and microcontroller by passing through a serial interface RS232 with the
help of its driver.
The project is based on the principle of GSM network, which enables the
user to remotely control the operations of the appliances by using a mobile
phone. In other word it would transform a normal home into an intelligent
home. The controlling circuit is the most important component in
communication and interface between home appliances. It was implemented by
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using peripheral interface controller (PIC) interfaced to mobile phone. The user
can perform ON/OFF operations of the appliances just by pressing keypad of
mobile phone.
The user sends GSM data in the form of SMS (short message service) message
to switch ON or OFF any appliances at home such as lamp, air condition, fan and
etc. the appliances may also provide the user with its current ON/OFF status.
The system can be improved to provide the user with information about the
status of each appliance.
PROJECT OBJECTIVES
The objectives of this project are as follows;
1. To design and develop home appliances control system over GSM
network by using a mobile phone.
2. To determine and understand on how the GSM works.
3. To understand the architecture and programming of the PIC.
4. To learn the troubleshooting and techniques.
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SCOPE OF THE PROJECT
The scopes of works in this project are;
1. Mobile phone with SIM card enables the user to remotely control the
operations of the appliances by communication to the GSM modem.
2. GSM modem allows the capability to send and receive SMS to and from
the mobile phone.
3. RS-232 is the basic serial communication cable that will be used to
interface between GSM modem and PIC microcontroller.
4. PIC microcontroller will be interfaced to the control circuit that is
connected to the appliances. It contains the software components
through which the appliances are controlled and monitored.
5. Relay and control circuit used to detect and control the condition of the
home appliances.
OPERATION OF THE SYSTEM
The system works as a remote sensing for the electrical appliances at home or
industry to check whether it is ON or OFF, at the same time the user can control
the electrical appliances at home by sending SMS message into the system, for
example, turning on the AC before returning home. in case of fire/security the
chip will receive signals from the different sensors in the monitoring place and
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acts according to the received signal by sending an SMS message to user’s
mobile phone, it also works as automatic and immediate reporting to the user
in case of emergency for home security, as well as immediate and automatic
reporting to the fire brigade and police station according to activated sensor to
decrease the time required for tracking action.
A sketch of overall design of the home appliances control using GSM is shown
in the figure below.
RS232 interface
Relay interface
FIG; Simplified block diagram of home appliances
Control using GSM.
ARCHTECTURE OF THE SYSTEM
It can be implemented to any levels of the security system. The architecture of
the system mainly consists of three components the GSM MODEM and the
Mobile device (user)
GSM modem
PIC
Home appliances
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interface circuit that include the different sensors used. The function of the GSM
MODEM is the remote communication between the user and the controller
through the RS232 serial communication standard. The function of the
controller is to continuously check the inputs coming from the different sensor
and send message through the GSM network in case of emergency such that it
acts as a 24hours monitoring and continuously checking for any received
message from the user through the GSM MODEM to switch on the AC for
example.
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