sms based device controlling

SMS Based Device Controlling

and Status Monitoring

BY

Aritra thakurta(ece/2008/060)

Anupam biswas(ece/2008/048)

Arindam biswas(ece/2008/053)

Dipan bandyopadhyay(ece/2008/054)

Under Guidance OfMr. Srijibendu Bagchi

Overview

IntroductionBasic working of the systemSystem block diagramFlowchartSystem Circuit diagramThings required for Construction of the projectConstruction procedureApplication of the SystemAdvantages and DisadvantagesFuture planning Possible improvementAcknowledgements and ReferencesConclusion

SMS Based Device Controlling and Status Monitoring

Introduction

In our modern busy days life we sometimes forget to switch off devices while leaving home, so we need to operate devices while we are no able to access them physically. So the goal of our project is to design an embedded system which can control devices by sending a specific SMS from a cell-Phone. The embedded system is programmed to control the devices according to commands from a remote.


Basic Working of the System

The remote user sends text message including commands to the receiver.

GSM receiver receives messages sent from the user cell phone.

GSM receiver decodes the sent message and sends the command to the microcontroller.

Microcontroller issues commands to the appliances and the device connected will switch ON/OFF.


SYSTEM BLOCK DIAGRAM

SMSNOKIA3315

ATtiny2313

RELAY 3

RELAY 2

RELAY 1

ULN2003RELAY

DRIVER

FAN

LAMP

WATER PUMP

LCD DISPLAY

Tx

Rx

GND


FLOW CHARTSTART

Device Initialization

Reading SMS/Sensor Status

SMSReceived

?

Reading SMS from SIM card and compare

with default command

Device controlled with valid command

Device status is sent to owner’s Mobile

ValidCommand

?

Delete SMS from SIM

YES

NO

NO

YES


Things required for building the project

HARDWARE

AT command supporting NOKIA 3315/3310 GSM Phone.ATtiny2313 MicrocontrollerMax 232 IC.RelaysRelay driver IC ULN 2803Voltage regulator LM7805,LM317t,LM7812.Diode IN4007,1N4148

SOFTWARE

WINAVRPCB WIZARD

TECHNOLOGY

GSM (Global System for Mobile Communication)Launched in 1991 by Radiolinja in Finland900/1800MHZ: uplink and downlink(Frequency band)


Circuit Diagram


Construction Procedure

Development and testing of the software

Development of the circuit

Programming the Microcontroller

Testing of the circuit

PCB preparation

Encasement


Application

Wireless automation and control.

Remote monitoring.

Alarm and notification systems.

Automatic meter reading.


Advantages and Disadvantages

Advantages

Global Range

Low Cost

Low Power Requirement

Disadvantages

Delays in mobile network

Need of a mobile phone entirely dedicated for the system.


Future planning and Possible Improvement

Control of more devices

Use of GSM module

Theft alert


Acknowledgements and References:

It is a great pleasure in presenting our project under the guidance of Mr.Srijibendu Bagchi.From the core of our heart, we all pay deep gratitudeto him and to all the faculties of ECE for being a constant source ofinspiration and for helping us in difficulties that we have faced till dateand we are sure that we will get future help from them for thecompletion of this project.

For our project till date ,we have taken help from the following s:

1. Mazidi,Muhammad ali, The 8051 Microcontroller and EmbededSystems, Second edition.

2. www.google.co.in3. www.embedronics.com4. www.forum.nokia.com


http://www.embedronics.com/

http://www.forum.nokia.com/

Conclusion

In this era when the number of mobile phones users growing at a high rate, this system makes use of the mobile networks to provide the users with a simple and cheap home automation system.


sms based device controlling

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