Gsm Based Home Automation

Georgin Jacob

Nimal V A

Home Automation

GSM

GSM based Home Automation

Working

Construction

Advantages & Disadvantages

Possible Improvements

Why we need it…

Forgetting to switch off

devices while leaving

home.

Needs arising to operate

devices while we are not

able to access them

physically.

Devices are connected to

an embedded system.

The embedded system is

programmed to control the

devices according to

commands from a remote.

Implementation …

Most Popular Mobile Technology

Launch -1991 by Radiolinja in

Finland

Frequencies - 900/1800MHz

Range –Global

Interface – Subscriber Identity

Module

Services – SMS,MMS,GPRS,EDGE…

Home Automation – A Microcontroller System

Remote – A GSM Mobile Phone

Commands – SMS

1. User sends commands via SMS

2. Mobile at the system transfers it to Micro controller

3. The Microcontroller operates the Devices according

to the command received.

o Data Cable of mobile – DB9

o RS232 standard

o Interface - MAX232

o AT Commands

• Current Driver– ULN2003

• Switch – SPDT Relay

Development & testing of Software

Development of Circuit

Programming the Microcontroller

Bread board testing of the circuit

PCB Preparation

Encasement

Software Testing – μVision Kiel

Circuit Development& Simulation – OrCad Release 9.1

Microcontroller Burning – Super Pro Programmer

PCB Preparation – PCB Wizard

Global Range

Low Cost

Low Power Requirement

Delays in mobile networks

Need of a mobile phone

entirely dedicated for the

system

Control of more devices

Use of GSM Module

Theft Alert

In this era when the number of mobile phone usersgrowing at a high rate, this system makes use of the mobilenetworks to provide the users with a simple and cheap HomeAutomation System.