Presentation1(12.01.07) - Voice Controlled Wheelchair

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2 Νοε 2013 (πριν από 3 χρόνια και 9 μήνες)

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VOICE OPERATED
WHEEL CHAIR


www.techtriks.wordpress.com





Model Engg. College, Ernakulam

Group Members:



Nisha M S


ECU032/48



Sapna Vasudevan

ECU032/32



Tintu Mary Skariah

ECU032/40



Senthil Kumar


ECU032/34



Priyanka Susan George

ECU032/29

Project

website:
www.techtriks.wordpress.com


Project Guide:

Mr. Rajesh M V



Sr. Lecturer



Dept. of Electronics


Project Co
-

ordinator: Mrs. Jibi John




Sr. Lecturer




Dept. of Electronics


To

control

the

movement

of

a

manual

wheelchair

by

means

of

human

voice

for

paralyzed

patients
.




AIM:


BLOCK DIAGRAM

MIC


VOICE
RECOGNITION
IC




MICROCONTR
OLLER


DRIVER


CIRCUIT

RIGHT

MOTOR

BATTERY

CHARGER

BATTERY

LEFT
MOTOR


DRIVER


CIRCUIT

SPEED &DIRECTION


CONTROL

RESET


SPECIFICATIONS

1.MICROCONTROLLER: PIC16F877

2.VOICE RECOGNITION IC (options)


a)HM2007

b) ISD 2500

c) MSM6679

3. MOTOR DRIVER CIRCUIT (options)


a) H
-
BRIDGE CIRCUIT USING MOSFET


b) H
-
BRIDGE IC: LMD18245,LMD18200

4.MOTORS(DC): (options)


a) GEAR DRIVEN


b) CHAIN DRIVEN


c) HUB MOTOR

5.BATTERY

6.BATTERY CHARGER CIRUIT


VOICE RECOGNITION IC


ACCEPTS THE VOICE INPUT SIGNAL


SPEED AND DIRECTION RECORDED


MICRO CONTROLLER



PROCESSES DATA



PROVIDES CONTROL VOLTAGE TO MOTORS


DC MOTORS


DRIVES THE WHEELS OF THE CHAIR IN


NECESSARY MODES




VOICE RECOGNITION IC


It’s

a

single

chip

CMOS

voice

recognition

module

with

on
-
chip

ADC,

Voice

analysis,

Recognition

process

and

system

control

functions
.


A

10
-
40

isolated

word

voice

recognition

system,

can

be

interfaced

with

external

memory,

key

board,

microphone

etc
.


Speaker

dependant

and

speaker

independent

modules

available

MICRO CONTROLLER:PIC16F877



High performance RISC CPU


Only 35 single word instructions to learn


All single cycle instructions except for program


branches which are two cycle


Operating speed: DC
-

20 MHz clock input


DC
-

200 ns instruction cycle


Up to 8K x 14 words of FLASH Program Memory,


Up to 368 x 8 bytes of Data Memory (RAM)


Up to 256 x 8 bytes of EEPROM Data Memory


Up to 8K x 14 words of FLASH Program Memory,


Up to 368 x 8 bytes of Data Memory (RAM)


Up to 256 x 8 bytes of EEPROM Data Memory


MOTOR DRIVER


H bridge circuit used for controlling the DC
motors.


CMOS/IGBT

H
-
bridge

modules

available

with

different

current

and

voltage

specifications
.







THANK YOU