HOME AUTOMATION AND SECURITY SYSTEM

INTERNAL GUIDE M.ANULATHA(09D21AO464)Mr.FRANCIS G.DIVIJA(09D21A0469)

K.PHANIPOOJA(09D21A0488) E.DIVYA(09D21A0470)

The project aims at designing a automatic locking system that will activate by using voice command by seeing their faces in the television through camera or by sending the right SMS to the system and if any thief tries to enter the home by breaking the window message will be send to the owner and if any fire accidents occur in the home it sends the message to the fire control room.

ABSTRACT

The project uses the GSM technology and Embedded Systems to design this application

Our project mainly consists 3parts Automatic door lock opening system Fire detection Home security systemHere we are mainly using gsm technology, voice

module, fire sensor, IR pair etc.

INTRODUCTION

Now a days everything became automized If any thief enters the house there will be no

intimation and loss of wealth hence by placing the IR pair we will be intimated .

If any fire accidents occur there will be huge damage in order to avoid that a message will be sent to the fire control room intimating about the fire accident that occurred.

OVERVIEW OF THE EXISTING SYSTEM

Microcontro

ller

voicemodule

Ir pair

Switch

RS 232

l293D

buzzer

Max 232

gsm

M1 load

BLOCK DIAGRAM

Fire sensor

ADC

LCD CAM

AUTOMATIC DOOR LOCK OPENING SYSTEM: When ever a person presses the calling bell we are

able to see the video with the help of cam in the tv. by using voice command by seeing their

faces in the television through camera and by sending the right SMS to the system it will be operated automatically

WORKING OF THE PROJECT

FIRE DETECTION: If a fire accident occurs fire sensor detects it and

regarding information will be sended to the user and controll room using gsm

SECURITY SYSTEM: By using IR pair we are able to detect if a thief tries

to enter into the house by breaking the windows

CIRCUIT DIAGRAM

Mc AT89C51 Voice module Cam Rs232 IR Pair MAX232 LCD Fire sensor ADC

Micro controller

8K Bytes of Re-programmable Flash Memory. RAM is 256 bytes. 4.0V to 5.5V Operating Range. Fully Static Operation: 0 Hz to 33 MHz’s Three-level Program Memory Lock. 256 x 8-bit Internal RAM. 32 Programmable I/O Lines. Three 16-bit Timer/Counters. 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.

Features of AT89S52

The infared region is roughly from 0.75µm to 1000 µm

IR pair consists of transmitter receiver Used to detect any moving object Transmitted signal will be reflected back to the

transmitter, if any object is present

IR PAIR

An RS-232 serial port was once a standard feature of a personal computer, used for serial communication with the modems, printers, data storage, uninterruptible power supplies, and other peripheral devices

Communication as defined in the RS232 standard is an asynchronous serial communication method. The word serial means, that the information is sent one bit at a time. Asynchronous tells us that the information is not sent in predefined time slots. Data transfer can start at any given time and it is the task of the receiver to detect when a message starts and ends

RS-232

GSM is a TDMA based wireless network technology developed in Europe that is used throughout most of the world. GSM phones make use of a SIM card to identify the user's account.

The use of the SIM card allows GSM network users to quickly move their phone number from one GSM phone to another by simply moving the SIM card. Currently GSM networks operate on the 850MHz, 900MHz, 1800MHz, and 1900MHz frequency bands

Devices that support all four bands are called quad-band, with those that support 3 or 2 bands called tri-band and dual-band, respectively. In the United States, Cingular operates on the 850 and 1900MHz bands, while T-Mobile operates only on the 1900MHz band.

A GSM modem is a wireless modem that works with a GSM wireless network.

wireless modem sends and receives data through radio waves.

These are used in many applications like TV remotes Mouse

Electric motors are used to efficiently convert electrical energy into mechanical energy.

Motors are two types AC motor DC motor Magnetism is the basis of their principles of

operation.

DC MOTOR

In any electric motor, operation is based on simple electromagnetism. A current-carrying conductor generates a magnetic field; when this is then placed in an external magnetic field, it will experience a force proportional to the current in the conductor, and to the strength of the external magnetic field. As you are well aware of from playing with magnets as a kid, opposite (North and South) polarities attract, while like polarities (North and North, South and South) repel. The internal configuration of a DC motor is designed to harness the magnetic interaction between a current-carrying conductor and an external magnetic field to generate rotational motion

Works as voltage regulator Max232 IC is a specialized circuit which

makes standard voltages as required by RS232 standards.

MAX 232

It will detect any fire accident depending on the temperature rise.

For every one degree of temperature rise will produce 2mv of voltage

FIRE SENSOR

This is designed to drive inductive loads such as relays, solenoids, dc and bipolar stepping motors, as well as other high-current/high-voltage loads in positive-supply applications.

The L293D is designed to provide bidirectional drive currents of up to 600-mA at voltages from 4.5 V to 36V.

L293D

Features : Wide Supply-Voltage Range: 4.5 V to 36 V Separate Input-Logic Supply Thermal Shutdown High-Noise-Immunity Inputs Output Current 1 A Per Channel (600 mA for L293D) Peak Output Current 2 A Per Channel (1.2 A for

L293D)

 

L293D

By implementing this project we are providing safety to the home. It is very useful for physically disabled people.

CONCLUSION