voice recognition based home automation system for paralyzed people

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Page 1: Voice recognition based home automation system for paralyzed people
Page 2: Voice recognition based home automation system for paralyzed people

CONTENTS

ABSTRACT

INTRODUCTION

BLOCK DIAGRAM

COMPONENTS

VR MODULE

MICRO PHONE

PROCESSOR

GSM MODULE

LCD

RF TRANSMITTER AND RECIEVER

RELAY CIRCUIT

ADVANTAGES

APPLICATIONS

RESULTS

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Page 3: Voice recognition based home automation system for paralyzed people

ABSTRACT

• The key objective of our system design is to provide easy means for

normal, handicapped and old age persons to control and operate

home appliances.

• Since home automation is gaining popularity day by day in today’s

world, we require a system which is affordable and simple to

implement.

• Develop an embedded system which is used to control the home

appliances through voice for the visually impaired people and also

for the physically challenged people.

• Though various techniques have been proposed and are available

currently, most of them are not user friendly for the visually

impaired people and thus a friendly system has been developed for

them.

Page 4: Voice recognition based home automation system for paralyzed people

INTRODUCTION

• Wireless home network.

• Provide secure Realize the concept of a smart home.

• Has the more applications than the traditional manual methods.

• Require home automation system to satisfy their needs and comfort

while for physically challenged people it can provide great

assistance.

• Need a person which take care’s movement disabled or paralyzed

patient.

• And appliances cannot be handled by them. So they need constant

help and they cannot work independently.

• It can also be used to send messages Or call someone on mobile

phone, All this can be done with just a few voice commands.

Page 5: Voice recognition based home automation system for paralyzed people

VOICE

RECOGNITION

SERIAL

COMMUNICA

TION

MICRO

PHONE

MICRO

CONTROLLER

AT MEGA

328p

POWER

SUPPLY

LCD

DISCIPLAY

SWITCHING

CIRCUIT

RF

TX

RF

RX

OSCILL

ATOR

BLOCK DIAGRAM

FIG-1: BLOCK DIAGRAM OF THE PROJECT

DRIVER

MODULE

GSM

MODULE

FAN

LIGHT

Page 6: Voice recognition based home automation system for paralyzed people

MICRO PHONE

• A microphone is a transducer that converts sound into an electrical

signal.it is commonly named as Mike.

• Microphones are used in many applications such as telephones, hearing

aids, public address systems for concert halls and public events, motion

picture production audio engineering, radio and television broadcasting,

in computers for recording voice, speech recognition and for non-acoustic

purposes such as ultrasonic sensors.

FIG-2: MICRO PHONE

Page 7: Voice recognition based home automation system for paralyzed people

VOICE RECOGNITION MODULE

A microphone picks up the signal of the speech to be recognized

and converts it into an electrical signal.

A modern speech recognition system also requires that the

electrical signal be represented digitally by means of an analog-

to-digital (A/D) conversion process, so that it can be processed

with a digital computer or a microprocessor.

This speech signal is then analyzed to produce a representation

consisting of salient features of the speech.

speech pattern is then compared to a store of phoneme patterns or

models through a dynamic programming process in order to

generate a hypothesis of the phonemic unit sequence.

Page 8: Voice recognition based home automation system for paralyzed people

Parameters:

• Voltage: 4.5-5.5V.• Current: <40mA.• Digital Interface: 5V TTL level for UART

interface and GPIO.• Analog Interface: 3.5mm mono-channel

microphone connector + microphone pin interface.

• Size: 31mm x 50mm.• Recognition accuracy: 99%

Features:

• Support maximum 80 voice commands, with each voice 1500ms (one or two words speaking).

• Maximum 7 voice commands effective at same time.

• Arduino library is supplied• Easy Control: UART/GPIO.• User-control General Pin Output.

FIG-3:VOICE RECOGNITION MODULE

Page 9: Voice recognition based home automation system for paralyzed people

GSM - MODULE

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Dual-Band 900/ 1800 MHz

GPRS multi-slot class 10/8GPRS mobile

station.

Class 1 (1 W @ 1800/1900MHz)

Control via AT commands (GSM 07.07

,07.05 and SIMCOM enhanced AT

Commands).

Low power consumption: 1.5mA(sleep

mode)

Operation temperature:-40°Cto +85 °C.

Status indicator(D5):It will flashes

continuously whenever the call arrives

otherwise it is left ON.

Network LED(D6):This led will blink

every second.FIG-4:GSM MODULE

Page 10: Voice recognition based home automation system for paralyzed people

PROCESSOR

• The AT MEGA 328 operates between 1.8 - 5.5 volts.

• Three flexible timer/counters with compare modes, internal and external interrupts, serial programmable USART.

Parameter Value

• Number AT MEGA 328p

• Bits 8 bit

• Flash (k Bytes): 32 k Bytes

• Pin Count: 32

• Max. Operating Freq. (MHz): 16 MHz

• CPU: 8-bit

• Max I/O Pins: 23

• Ext Interrupts: 24

• USB Interface: No

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Page 11: Voice recognition based home automation system for paralyzed people

FIG-5:ARDUINO-UNO

Page 12: Voice recognition based home automation system for paralyzed people

LCD

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A 16x2 alphanumeric LCD is

most widely used module of

LCD nowadays.

The reason for choosing LCD

over other display component or

devices is that it is

Low cost

Easily programmable

Large number of display

character etc.

It has two type of register

inbuilt that is

Command Register

Data Register.FIG-6: LCD

Page 13: Voice recognition based home automation system for paralyzed people

RF TRANSMITTER AND RECEIVER

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• It operates at Radio Frequency. The

corresponding frequency range

varies between 30 kHz & 300 GHz.

• In this RF system, the digital data is

represented as variations in the

amplitude of carrier wave.

• This kind of modulation is known as

Amplitude Shift Keying (ASK).

FIG-7 : RF TRANSMITTER CIRCUIT DIAGRAM

Page 14: Voice recognition based home automation system for paralyzed people

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• The RF module is often used along

with a pair of encoder/decoder.

• The encoder is used for encoding

parallel data for transmission feed

while reception is decoded by a

decoder.

• HT12E-HT12D, HT640-HT648, etc.

are some commonly used encoder /

decoder pair ICs.

FIG-8 : RF RECEIVER CIRCUIT DIAGRAM

Page 15: Voice recognition based home automation system for paralyzed people

RELAY MODULE

A relay is an electrically operated switch.

Many relays use an electromagnet to

mechanically operate a switch, but other

operating principles are also used, such

as solid-state relays.

Relays are used where it is necessary to

control a circuit by a separate low-power

signal, or where several circuits must be

controlled by one signal.

The first relays were used in long

distance telegraph circuits as amplifiers: they

repeated the signal coming in from one

circuit and re-transmitted it on another

circuit.

FIG-9:RELAY MODULE

Page 16: Voice recognition based home automation system for paralyzed people

FIG-10:RELAY MODULE

Page 17: Voice recognition based home automation system for paralyzed people

ADVANTAGES

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Low cost.

Easy to use.

Comfortable to live.

Smart home.

Prevents wastage of

electricity.

Highly flexible.

Quick response time.

Real-time application.

Reduces the use of human

activity.

Highly secured.

High accuracy.

Page 18: Voice recognition based home automation system for paralyzed people

APPLICATIONS

Home where we can control whole

appliances.

Industries where we can control

machines by just saying instructions.

This project is useful for the blind

people.

Notice board to show whatever

messages they want to display

Military applications.

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Page 19: Voice recognition based home automation system for paralyzed people

RESULTS

FIG-11: HOME APPLICANCES

Page 20: Voice recognition based home automation system for paralyzed people

FIG-12:WHEEL CHAIR FIG-13:MESSAGE REQUEST

Page 21: Voice recognition based home automation system for paralyzed people