Smart Home

Thiagarajar College Of Engineering
SMART HOME
GUIDE: Dr. (Mrs.) S.RAJU
Mr. K. HARIHARAN

Thiagarajar College Of EngineeringSMART HOME
SMART HOME Team:
M.Alagappan
T.Balaji Srinivasan
S.M.Jerome Lourdu Vikram
S.Pradheep
S.Vasantha Kumar
S.Vivek Swaminathan

Home Automation

Objective
Developing a prototype on the Home of
the Future.
Control Appliances by monitoring
various Parameters (using Sensors) and
keeping the User updated on the Status.
Establishing a wireless data transfer link
using Zigbee protocol.
Developing a network of Zigbee nodes
that communicate seamlessly.

Product Overview

Key Features Implemented
Lighting Control Systems.
Intruder Detection System.
Monitor Temperature and Light Intensity.
Mobile node for Monitoring and Control.
Schedule various Appliances.
Data transfer using Zigbee protocol.
Seamless Zigbee Network.

Flow of this Presentation
Overview on Zigbee
Ground Work.
Sensor Specifications.
Mobile Node.
Appliance Control using Relay.
Product Working.

WIRELESS over WiredWIRELESS over Wired
 FlexibilityFlexibility
 ScalabilityScalability
 Ease of deploymentEase of deployment
 RetrofittingRetrofitting
 Reduced costReduced cost
 Fit and forgetFit and forget

Protocols OverviewProtocols Overview
ZigBee
802.15.4
Wi-Fi
802.11b
Wi-Fi5
802.11a/HL2
GSM/CDMA GPRS/3G LMDS
High Data RateLow Data Rate
ShortRangeLongRange
WAN
LAN
PAN
Bluetooth 2
Text
Digital
video Multi-channel
video
Graphics
Internet
Hi-Fi
audio Streaming
video
Bluetooth 1
802.15.1
WiMedia
802.15.3

Why ZIGBEE ???Why ZIGBEE ???
Reliable and Self HealingReliable and Self Healing
Supports large number of nodesSupports large number of nodes
Easy to deployEasy to deploy
Very long battery lifeVery long battery life
SecureSecure
Low costLow cost
Less channel access timesLess channel access times
Can be used globallyCan be used globally

What is Zigbee?What is Zigbee?
 Specification of protocols for small, low-
power radios
 Operates at 868.3MHz,902-928MHz,2.4-
2.48MHz
Zigbee-Alliance
 Companies developing and promoting the
standard
 150+ members

Silicon
PHY Layer
MAC Layer
LLC Layer
Network Layer
Zigbee
Stack
Application
Application Interface
Application
Customer
ZigbeeAlliance
IEEE
Zigbee Stack
CC2420CC2420
A Zigbee IC from Texas instruments that has bothA Zigbee IC from Texas instruments that has both
physical and MAC layerphysical and MAC layer

EasyBee Module
True single-chip 2.4 GHz IEEE
802.15.4 compliant RF transceiver
Low current consumption
Programmable output power
128(RX) + 128(TX) byte
data buffering
 Hardware MAC encryption
 Battery monitor

Ground Work
Identification and procurement of the
various Components and Sensors.
Development of all the hardware
necessary for the product development.
Fabrication of a common platform for
interoperable module development.
Basic Testing of Working of the boards.

Work Flow
Requirement Analysis
Components Identification
Component Procurement
Development Boards
Hardware Circuit Design
Zigbee Network Formation
Mobile Node Development
Appliance Control using Relays
Integration of modules
Prototype Development
Initial Works
Development
Integration

Development Boards
AVR Microcontroller Development board
for developing Sensor modules.
 Dual Power Supply Selection.
 On Board Serial Communication.
 2 X 4 Matrix Keyboard and LEDs.
 JTAG and SPI compatible.
 In System Programmable.
Easybee Development Board for Zigbee
Programmer for AVR ATmega series.

Zigbee Development Board

Sensors Used
Temperature Sensor- DS1624
Motion Sensor- AMN 13112(PIR).
Light Intensity - Light Dependent
Resistor.
Real Time Clock- DS1307

Temperature Sensor: DS1624
I2C- Two Wire Interface.

Motion Sensor: AMN13112
Detects changes in Infrared radiation
which occur when there is movement by
a person

Light Dependent Resistor
Resistance varies with Light Intensity.

Real Time Clock: DS1307
Dedicated Clock with advanced features.
I2C Compatible.

Zigbee Module Integration

Key Implementations
Communication between two nodes
using Zigbee protocol across the
available channel.
Assignment of network and host ID to
the available nodes.
Address recognition between the
communicating nodes.
Acknowledgement to Packets to identify
any node failures.

Frame Format

Data Transmission Viewed Using
Packet Sniffer

Mobile Node
Development of Nokia 3310 LCD
interfacing circuit.

Nokia LCD Interfacing
NOKIA 3310 LCD INTERFACING
BOARD:
 Compatible with AVR Development
Board.
 4 X 4 Matrix Keypad.
 Real time clock using DS1307.
 Scheduler for appliances.

Menu Hierarchy

Key Features
Monitor various Sensor Status.
Motion Detection Alert.
Scheduler for every appliance in the
home.
Controlling Appliances using Relay
circuitry.

Startup Screen

Main Screen

Main Menu

Rooms Display

Sensor Status

Switch Status

Time & Date Settings

Appliance Control

Atmega 8L
Atmega 8L to remove the burden of
parent controller from controlling all
appliance.
 Can be used to extend the no of
controlled devices.
 Usage of serial interface allows
relocation of controlling switches to any
location.

Product
State Diagram

Scope of the Product
Cost Effective Home Automation
Extremely Low Power Wireless Solution
User Friendly Mobile Node
Scheduled ON-OFF Control of
Appliances
Relocation of Sensor nodes feasible

Future Work
Adding more number of Sensors.
Integration of Camera to provide real
time Video Surveillance.
Ethernet Module development to upload
the data on to the Internet.
GSM module support for providing the
user with SMS Alerts.

Smart Home

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