HOUSE AUTOMATION USING MOBILE WITH SECURITY SYSTEM

Under the guidance ofMr. T. VENUGOPALM.E, MISTE, FIETE(PhD)Assoc. Prof. ECE Department

BY 09-431 09-424 09-450

BRIEF OVERVIEWEmbedded system - IntroductionHouse Automation System with Mobile Security User InteractionFeatures of House Automation Principle and operation of House Automation Block Diagram of House Automation About Microcontroller AT89S52 Introduction to Embedded C Program Code and Wave formsApplications/Advantages/DisadvantagesFuture scopeBibilographyConclusion

Embedded system - Introduction An Embedded System is one that has computer

hardware with software embedded in it as one of its important components.

Its software embeds in ROM (Read Only Memory). It does not need secondary memories as in a computer.

SOFTWARE PROGRAM

What Makes Embedded System Different ?

Real-Time OperationSizeCostReliabilitySafetyEnergySecurity

History of Embedded System The first recognizably

modern embedded systems was the Apollo Guidance Computer.

It was developed by Charles Stark Draper at the MIT Instrumentation Laboratory in early 1960’s.

It was built from transistor logic and had a hard disk for main memory.

Since these early applications in the 1960’s embedded systems have come down in price and there has been a dramatic rise in processing power and functionality.

Components of Embedded System It has Hardware Ex: Timers, Processors,

I/O Devices, Memory, ports. It has main

application software

which may perform

concurrently the series

of tasks or multiple tasks. It has Real Time

Operating System which sets Rules during the

Execution of Application

program.

Processor - The Heart of Embedded System

A Processor is considered as the Heart of Embedded System.

A Processor is a Part of Central Processing Unit that Performs Calculations and other manipulations such as conversion of Program code into form of Binary code (such as 0’s and 1’s) which is acceptable by computer being used.

Two Main Operations of Processor:

Fetch data

Execute data

A Typical Figure of Processor

Embedded Software

Software C C++ dot net

Compiler Ride Keil

Simulator Masm

Program code in Embedded C

#include <16f876a.h> #use delay(clock=20000000) #byte PORTB=6 main { Set_tris_b(0) portb=255 //decimal delay_ms(1000); portb=0x55; // hexa decimal delay_ms(1000); Portb=0b101010101; //binary delay_ms(500); }

Applications of Embedded SystemHousehold appliances EX: microwave ovens, television,

DVD players and Recorders.

Audio players Integrated systems in

Aircrafts and MissilesCellular TelephonesEngine controllers in

AutomobilesElectronic and

Electric Motor controllers

Medical EquipmentsVideogames

House Automation using Mobile Security Introduction

House automation with mobile refers to the use of computer or mobile and information technology to control home appliances and features (such as windows or lighting).

Systems can range from simple remote control of lighting through to complex computer/micro-controller based networks with varying degrees of intelligence and automation.

Home automation is adopted for reasons of ease, security and energy efficiency.

Why house automation? Technology has surged

now that it has unlocked your potential to control your appliances with out your physical presence.

This project HOUSE AUTOMATION USING MOBILE SECURITY SYSTEM enables us to control Home appliances like Bulbs, Fans, Micro ovens, washing machines, Water Pumps with the Pressing of our Mobile Keys.

Consequently, if you don’t Remember them to Switch OFF them Before you Leave your House, you can Easily do it through your Mobile which Serves as a Remote.

Need for House AutomationSaves TimeSaves Money (long run)Self MaintenanceSecurityMakes the Life Easy

Oven

When: you are in a traffic jam on the high wayWhat : you set microwave oven in a slow cooking mode

Principle of House Automation House Automation using

Mobile mainly consists of three parts – Microcontroller, DTMF(dual tone multiple frequency) decoder and Voice Recording and Play back device.

While on a Call, if a Handset Key is pressed, a Tone Analogous to Key pressed is Heard on the other side.

This Tone Received (DTMF tone) is Processed by the Micro controller with the Aid of a DTMF decoder.

The Decoder further Translates the Tone into corresponding Binary digit and sent to microcontroller to perform corresponding operation.

Block Diagram of House Automation

Power Supply

5v

DTMF

Rx IC

Mobile

Micro Controller

AT89S52

Buzzer

Driver

Relay1

IR pairs

DTMF (Dual – Tone Multi Frequency Signaling)

Dual-tone multi-frequency signaling (DTMF) is used for telecommunication signaling over analog telephone lines in communications devices and the switching center.

The version of DTMF that is used in push-button telephones for tone dialing is known as Touch-Tone.

DTMF tone Dialling system is used by the Push button Keypads in Telephones and Mobile sets to convey the Number or Key dialled by the caller.

DTMF uses a combination of two sine wave Tones to represent a key. These Tones are called Row and Column frequencies as they correspond to layout of Telephone Keypad.

DTMF keypad layout

Relay

A relay is an electrical switch that opens and closes under the control of another electrical circuit.

The switch is operated by an electromagnet to open or close one or many sets of contacts.

A relay is able to control an output circuit of higher power than the input circuit, it can be considered to be, in a broad sense, a form of an electrical amplifier.

A DPDT AC coil relay with "ice cube" packaging

Microcontroller A microcontroller (

abbreviated as µC, uC or MCU) is a small computer on a single integrated circuit containing a processor core, memory, and programmable input/output peripherals.

Program memory in the form of OTP ROM is also often included on chip, as well as a typically small amount of RAM.

Microcontrollers are designed for embedded applications.

Micro controller

Microcontroller AT89S52 The Atmel AT89 series is an

Intel 8051-compatible family of 8 bit microcontrollers (µCs) manufactured by the Atmel Corporation.

The AT89S52 is a low-power, high-performance CMOS 8-bit microcontroller with 8K bytes of in-system programmable Flash memory.

The device is manufactured using Atmel’s high-density non volatile memory technology and is compatible with the industry standard 80C51 instruction set and pin out.

AT89S52 Micro controller

Features of AT89S52 - MCU Compatible with MCS-51 Products 8K Bytes of In-System Programmable (ISP) Flash

Memory Endurance: 1000 Write/Erase Cycles 4.0V to 5.5V Operating Range Fully Static Operation: 0 Hz to 33 MHz Three-level Program Memory Lock 256K Internal RAM 32 Programmable I/O Lines 3 16-bit Timer/Counter Eight Interrupt Sources Full Duplex UART Serial Channel Low-power Idle and Power-down Modes Interrupt Recovery from Power-down Mode Watchdog Timer Dual Data Pointer Power-off Flag

Block Diagram of AT89S52 - MCU

FIG : BLOCK DIAGRAM OF AT89S52

Pin Description of AT89S52

FIG : PIN DIAGRAM OF AT89S52

Embedded C Embedded C is a set of language extensions for the

C Programming language by the C Standards committee to address commonality issues that exist between C extensions for different embedded systems.

Historically, embedded C programming requires nonstandard extensions to the C language in order to support exotic features such as fixed-point arithmetic, multiple distinct memory banks, and basic I/O operations.

In 2008, the C Standards Committee extended the C language to includes a number of features not available in normal C, such as, fixed-point arithmetic, named address spaces, and basic I/O hardware addressing.

Embedded C use most of the syntax and semantics of standard C, e.g., main() function, variable definition, data type declaration, conditional statements (if, switch. case), loops (while, for), functions, arrays and strings, structures and union, bit operations, macros, etc.

Program Code for Embedded C #include <16f876a.h> #use delay(clock=20000000) #byte PORTB=6 main { Set_tris_b(0) portb=255 //decimal delay_ms(1000); portb=0x55; // hexa decimal delay_ms(1000); Portb=0b101010101; //binary delay_ms(500); }

Applications of House Automation In modern construction in industrialized nations, most

homes have been wired for electrical power, telephones, TV outlets (cable or antenna), and a doorbell.

Control of Home Appliances Home Security Alarm Monitoring Control of home robots, using if necessary domotic electric

beacon. Lighting Control System Motion sensors Magnetic contact sensors for doors / windows Glass break detectors Pressure sensors Presence Simulation Detection of fire, gas leaks and water leaks (see fire alarm

and gas alarm) Medical alert / teleassistance. Precise and safe blind control

Advantages of House AutomationConvenience... An automated home is about the convenience of saving your time and effort by having your home automatically do routine functions such as watering your grass (but only if it has not rained recently), or turning off all lights, setting the thermostat to economy mode and arming the security system when you retire for the night.

Security... Home automation is about the security you have knowing that you can look in on your home remotely from anywhere in the world.

Savings... And it’s about the energy savings you will enjoy by assigning your home the responsibility of regulating the operation of lights, water heater, HVAC system, entertainment components, appliances and irrigation system so these devices are on only when needed.

DisadvantagesCosts mainly include equipment,

components, furniture, and custom installation.

Ongoing costs include electricity to run the control systems, maintenance costs for the control and networking systems, including troubleshooting, and eventual cost of upgrading as standards change. Increased complexity may also increase maintenance costs for networked devices.

Control system security may be difficult and costly to maintain.

Result

Bibilography Home automation

From Wikipedia, the free encyclopedia www.wikipedia.org www.national.com http://thesai.org/Downloads/Volume1No6/Paper_10-

Microcontroller_Based_Home_Automation_System_With_Security.pdf

www.atmel.com www.microsoftsearch.com www.geocities.com

Conclusion Home Automation makes our life easier, it

makes our life more comfortable, it saves our energy, it gives us more security, a peace of mind and not to forget it is fun too.

But most of all we believe it is what you want it to be. For some of us, it could be as simple as controlling a light or appliance with a completely automated home that is controlled by a computer interface completely programmed to fit your personal lifestyle. Home Automation is capable of controlling all home appliances assure the safety of your home appliance and personal property.