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International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 04 Issue: 06 | June -2017 www.irjet.net p-ISSN: 2395-0072
© 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 319
Advanced Braille System-Communication Device for Blind-Deaf People
Saraswathi Y.S1, Shivangi Garg1, Spurti Kulkarni1, Swetha1,Kiran B2
1Student, Dept. of ECE Engineering, SET-Jain University, Bangalore, India
2Assistant Professor, Dept. of ECE Engineering, SET-Jain University, Bangalore, India
---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - Braille is a tactile writing system used by a blind
and the visually impaired. It is a traditionally written with
embossed paper. They can write Braille with the originalslate
and stylus or type it on a Braille writer. In this project we are
developing a new methodology using a Braille system inorder
to read a message for a blind-deaf people. Here we are using a
GSM modem to receive a message the contents/letters of the
message can be read by blind people easily just by feeling the
vibration of the vibrator motor and the same contents/letters
will be displayed on the LCD so that even deaf people can
easily read it. Buzzer is working as a message alerter.
KeyWords:ArduinoUNO,Vibratormotor,LCD,
Buzzer,GSM,Keypad.
1. INTRODUCTION
Mobile cell phones are the milestone in telecommunication
technology. Despite of all these advancement in the
telecommunication field, the physically impaired people
have limited access for these technologies. So as a step to
bridge the gap between the blind-deaf people and the
technological advancement in the telecommunication field.
We decide to design a Short Message Service (SMS) system
for them. For that we are using Braille language as the basis
of the project. Braille is a tactile writing system used by the
blind and visually impaired. Braille characters are small
rectangular blocks called as cells that contain tiny palpable
bumps called raised dots. The number and arrangement of
these dots distinguish from one charactertoanother. Weare
designing a modular device using which blind-deaf people
can send and receive message without anysupportofothers.
The basic grid of a Braille alphabet character consists of six
cells, positioned like the figure six on a die, in two parallel
vertical lines of three dots each using which 64 different
signs can be created. In our modular design we are
representing cells in the form of vibrator motors.
2 .DESCRIPTION
SMS Read
Here the sender sends the SMS to the blind-deaf
person's mobile connected to the controller. The
microcontroller reads the SMS through AT commands and
then converts the letters of the SMS into the Braille language
using the lookup table stored in its memory. Then with the
help of six vibrator motors the microcontroller vibrates the
Braille pad on which the blind-deaf personcanreadtheSMS.
SMS SEND
Here the blind-deaf person can type the SMS using
the keypad interfaced to the microcontroller. The
microcontroller then converts the Braille letter to the
English alphabets using the lookup table. After the message
is translated into alphanumeric English letters the
microcontroller sends the typed SMS via the dedicated
mobile using AT commands.
Braille System
Braille is writing system which enables blind and
partially sighted people to read through touch. It consists of
patterns of raised dots arranged in cells of up to six dots in a
3x2 matrix configuration. Each cell represents letters,
numeral or punctuation marks.
Fig-1: Braille Code for English character
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 04 Issue: 06 | June -2017 www.irjet.net p-ISSN: 2395-0072
© 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 320
3. BLOCK DIAGRAM
Fig-2: Block diagram of proposed Braille System
4. HARDWARE DESCRIPTION
A. Arduino UNO
Arduino is an open source, computer hardware and
software company, project,andusercommunitythatdesigns
and manufactures microcontroller kits for building digital
devices and interactive objects that can sense and control
objects in the physical world. This system is supported by a
32 bit Atmel ARM processor. These systems provide sets of
digital and analog I/O pins that can be interfaced to various
extension boards and other circuits. The board features
serial communication interfaces, including USB on some
models, for loading programs from personal computers.The
Arduino platform provides Integrated Development
Environment (IDE) based on the processing project, which
includes support for C and C++ programming languages.
Fig-3: Arduino UNO
B. GSM Module
GSM engine works on frequencies 850MHz, 900MHz,
1800MHz and 1900MHz.It is very compact in size and easy
to use. It is designed with RS232 level converter circuitry,
which allows you to directly interface PC serial port. The
baud rate can be configurable from 9600-115200 through
AT command. Using this modem, youwill beabletosendand
receive SMS and also connect to internet via GPRS through
simple AT commands.
Fig-4: GSM
C. LCD
20x4 LCD has 14 pins. It uses eight pins for parallel data
and three pins for control signals, two pins connected for
power supply and one pin for contrast adjustment and two
connections for LED back light. LCD accepts two types of
signals, one is data and another is control. These signals are
recognized by the LCD module from status of the RS pin. The
data can be read by LCD display by pulling R/W pin high. As
soon as the Enable pin is pulsed, LCD display reads at the
falling edge of the pulse and executes it, same for the case of
transmission.
Fig-5: LCD
D. Buzzer
A Buzzer is a device which makes buzzing or beeping
noise. There are several kinds; the most basic is piezoelectric
buzzer, which is just a flat piece of piezoelectricmaterialwith
two electrode. This type of buzzer requries some kind of
oscillator to drive it. They are cheap and can be very loud
without using very much power.Apiezoelectricmaterialalso
produce a voltage in response to pressure, so piezo electric
buzzer can also be used as crude pressure sensor or
microphones. Typical use of buzzers and beepers include
alaram devices, timers andconfirmationofuserinputsuchas
a mouse click or keystroke.
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 04 Issue: 06 | June -2017 www.irjet.net p-ISSN: 2395-0072
© 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 321
Fig-6: Buzzer
E. VIBRATOR MOTORS
An Eccentric rotating mass vibration motor(ERM) uses a
small unbalanced mass on a dc motor, when it rotates it
creates a force that translates to vibration. A miniature DC
vibration motors have the benefit of being easytoimplement
and are low cost. A small vibartion motor can be integrated
into a design so that equipment operators and users can rely
on the sense of touch, no longer requiring line of sightorhigh
volumes. This is one of the obvious benefits with mobile
phones, you can receive notification when a device is in your
pocket without disputing those around you. Now there are a
wide range of application that use this tiny vibration motors
to offer vibration alert notification and haptic feedback.
Fig-7: Vibrator Motor
F. LED
A light emitting diode is a two lead semiconductor light
source. It is a p-n junction diode, which emitts light when
activated. When a suitable voltage is applied to the leads,
electrons are able to recombine with electron holes within
the device, releasing energy in the form of photons. This
effect is called electroluminescence, and the color of the light
is determined by the energy band gap of semiconductor.LED
are used in applications as automotive headlamps, traffic
signals, camera flash and lighted wallpaper.
Fig-8: LED
G. Keypad
An alphanumeric keypad is a keyboardthatcontainsboth
numbers and letters on the same keys. Typically, they are
found on telephones and cellular phones. They also can
appear on laptops, ATMs or any device where both numbers
and letters are equally necessary. Thereishalfaseconddelay
in characters of a same button. For example button 1 is
printing 1a,b,c. Now if we want to print b, press button 1 first
time then within half a second press it second time, then in
half asecond press it third timeand b willbedisplayedonthe
20x4 LCD. If you do not press the button in half second you
will stuck to the last printed character and will be unable to
go next character.
Fig-9: Keypad
5. FLOW CHART
5.1 SMS SEND
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 04 Issue: 06 | June -2017 www.irjet.net p-ISSN: 2395-0072
© 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 322
5.2 SMS RECEIVE
6. CONCLUSION
Thus we conclude from above study that with some
modifications in conventional communicatingdevice,wecan
include large no. of physically challenged people in
communication system.
REFERENCES
[1]. Ramesh Sankara Subbu, Pawan Gnanaraj “Enabling
Visually Impaired To ReadMessagesFromModernGadgets”,
2012 Sixth International Conference on Sensing Technology
(ICST).
[2]. Nikhil Siva Subash, Siddhartha Nambiar, Vishesh Kumar
“Braille Key: An alternative Braille text input system”, IEEE
Proceedings of 4th International Conference on Intelligent
Human Computer Interaction, Kharagpur, India, December
27-29, 2012.
[3]. Satoshi Ohtsuka, Tai Tomizawa, Sadao Hasegawa,
Nobuyuki Sasaki and Tetsumi Harakawa . “Introduction of a
Wireless Body-Braille Device and a Self-learning System”,
978-1-4799-0892-9/13/$31.00 ©2013 IEEE.
[4]. Fernando Ramirez Garibay, Cesar Millan Olivarria,
Alejandro Federico Eufracio Aguilera, and Joel C. Huegel.
“MyVox—Device for the communication between people
blind, deaf, deaf-blind and unimpaired”, 978-1-4799-7193-
0/14©2014 IEEE.
[5]. Abhinav Kulkarni, Kishor Bhurchandi “Low cost e-book
reading device for blind people”, 2015 International
Conference on Computing Communication Control and
Automation 978-1-4799-6892-3/15 $31.00 © 2015 IEEE.
[6]. Harshit Gupta, Aswin AnilKumar.“TheBrailleInterface”,
978-1-5090- 978-15090-0774-5/16/$31.00 © 2016 IEEE.

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Advanced Braille System-Communication Device for Blind-Deaf People

  • 1. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 04 Issue: 06 | June -2017 www.irjet.net p-ISSN: 2395-0072 © 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 319 Advanced Braille System-Communication Device for Blind-Deaf People Saraswathi Y.S1, Shivangi Garg1, Spurti Kulkarni1, Swetha1,Kiran B2 1Student, Dept. of ECE Engineering, SET-Jain University, Bangalore, India 2Assistant Professor, Dept. of ECE Engineering, SET-Jain University, Bangalore, India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - Braille is a tactile writing system used by a blind and the visually impaired. It is a traditionally written with embossed paper. They can write Braille with the originalslate and stylus or type it on a Braille writer. In this project we are developing a new methodology using a Braille system inorder to read a message for a blind-deaf people. Here we are using a GSM modem to receive a message the contents/letters of the message can be read by blind people easily just by feeling the vibration of the vibrator motor and the same contents/letters will be displayed on the LCD so that even deaf people can easily read it. Buzzer is working as a message alerter. KeyWords:ArduinoUNO,Vibratormotor,LCD, Buzzer,GSM,Keypad. 1. INTRODUCTION Mobile cell phones are the milestone in telecommunication technology. Despite of all these advancement in the telecommunication field, the physically impaired people have limited access for these technologies. So as a step to bridge the gap between the blind-deaf people and the technological advancement in the telecommunication field. We decide to design a Short Message Service (SMS) system for them. For that we are using Braille language as the basis of the project. Braille is a tactile writing system used by the blind and visually impaired. Braille characters are small rectangular blocks called as cells that contain tiny palpable bumps called raised dots. The number and arrangement of these dots distinguish from one charactertoanother. Weare designing a modular device using which blind-deaf people can send and receive message without anysupportofothers. The basic grid of a Braille alphabet character consists of six cells, positioned like the figure six on a die, in two parallel vertical lines of three dots each using which 64 different signs can be created. In our modular design we are representing cells in the form of vibrator motors. 2 .DESCRIPTION SMS Read Here the sender sends the SMS to the blind-deaf person's mobile connected to the controller. The microcontroller reads the SMS through AT commands and then converts the letters of the SMS into the Braille language using the lookup table stored in its memory. Then with the help of six vibrator motors the microcontroller vibrates the Braille pad on which the blind-deaf personcanreadtheSMS. SMS SEND Here the blind-deaf person can type the SMS using the keypad interfaced to the microcontroller. The microcontroller then converts the Braille letter to the English alphabets using the lookup table. After the message is translated into alphanumeric English letters the microcontroller sends the typed SMS via the dedicated mobile using AT commands. Braille System Braille is writing system which enables blind and partially sighted people to read through touch. It consists of patterns of raised dots arranged in cells of up to six dots in a 3x2 matrix configuration. Each cell represents letters, numeral or punctuation marks. Fig-1: Braille Code for English character
  • 2. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 04 Issue: 06 | June -2017 www.irjet.net p-ISSN: 2395-0072 © 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 320 3. BLOCK DIAGRAM Fig-2: Block diagram of proposed Braille System 4. HARDWARE DESCRIPTION A. Arduino UNO Arduino is an open source, computer hardware and software company, project,andusercommunitythatdesigns and manufactures microcontroller kits for building digital devices and interactive objects that can sense and control objects in the physical world. This system is supported by a 32 bit Atmel ARM processor. These systems provide sets of digital and analog I/O pins that can be interfaced to various extension boards and other circuits. The board features serial communication interfaces, including USB on some models, for loading programs from personal computers.The Arduino platform provides Integrated Development Environment (IDE) based on the processing project, which includes support for C and C++ programming languages. Fig-3: Arduino UNO B. GSM Module GSM engine works on frequencies 850MHz, 900MHz, 1800MHz and 1900MHz.It is very compact in size and easy to use. It is designed with RS232 level converter circuitry, which allows you to directly interface PC serial port. The baud rate can be configurable from 9600-115200 through AT command. Using this modem, youwill beabletosendand receive SMS and also connect to internet via GPRS through simple AT commands. Fig-4: GSM C. LCD 20x4 LCD has 14 pins. It uses eight pins for parallel data and three pins for control signals, two pins connected for power supply and one pin for contrast adjustment and two connections for LED back light. LCD accepts two types of signals, one is data and another is control. These signals are recognized by the LCD module from status of the RS pin. The data can be read by LCD display by pulling R/W pin high. As soon as the Enable pin is pulsed, LCD display reads at the falling edge of the pulse and executes it, same for the case of transmission. Fig-5: LCD D. Buzzer A Buzzer is a device which makes buzzing or beeping noise. There are several kinds; the most basic is piezoelectric buzzer, which is just a flat piece of piezoelectricmaterialwith two electrode. This type of buzzer requries some kind of oscillator to drive it. They are cheap and can be very loud without using very much power.Apiezoelectricmaterialalso produce a voltage in response to pressure, so piezo electric buzzer can also be used as crude pressure sensor or microphones. Typical use of buzzers and beepers include alaram devices, timers andconfirmationofuserinputsuchas a mouse click or keystroke.
  • 3. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 04 Issue: 06 | June -2017 www.irjet.net p-ISSN: 2395-0072 © 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 321 Fig-6: Buzzer E. VIBRATOR MOTORS An Eccentric rotating mass vibration motor(ERM) uses a small unbalanced mass on a dc motor, when it rotates it creates a force that translates to vibration. A miniature DC vibration motors have the benefit of being easytoimplement and are low cost. A small vibartion motor can be integrated into a design so that equipment operators and users can rely on the sense of touch, no longer requiring line of sightorhigh volumes. This is one of the obvious benefits with mobile phones, you can receive notification when a device is in your pocket without disputing those around you. Now there are a wide range of application that use this tiny vibration motors to offer vibration alert notification and haptic feedback. Fig-7: Vibrator Motor F. LED A light emitting diode is a two lead semiconductor light source. It is a p-n junction diode, which emitts light when activated. When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescence, and the color of the light is determined by the energy band gap of semiconductor.LED are used in applications as automotive headlamps, traffic signals, camera flash and lighted wallpaper. Fig-8: LED G. Keypad An alphanumeric keypad is a keyboardthatcontainsboth numbers and letters on the same keys. Typically, they are found on telephones and cellular phones. They also can appear on laptops, ATMs or any device where both numbers and letters are equally necessary. Thereishalfaseconddelay in characters of a same button. For example button 1 is printing 1a,b,c. Now if we want to print b, press button 1 first time then within half a second press it second time, then in half asecond press it third timeand b willbedisplayedonthe 20x4 LCD. If you do not press the button in half second you will stuck to the last printed character and will be unable to go next character. Fig-9: Keypad 5. FLOW CHART 5.1 SMS SEND
  • 4. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 04 Issue: 06 | June -2017 www.irjet.net p-ISSN: 2395-0072 © 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 322 5.2 SMS RECEIVE 6. CONCLUSION Thus we conclude from above study that with some modifications in conventional communicatingdevice,wecan include large no. of physically challenged people in communication system. REFERENCES [1]. Ramesh Sankara Subbu, Pawan Gnanaraj “Enabling Visually Impaired To ReadMessagesFromModernGadgets”, 2012 Sixth International Conference on Sensing Technology (ICST). [2]. Nikhil Siva Subash, Siddhartha Nambiar, Vishesh Kumar “Braille Key: An alternative Braille text input system”, IEEE Proceedings of 4th International Conference on Intelligent Human Computer Interaction, Kharagpur, India, December 27-29, 2012. [3]. Satoshi Ohtsuka, Tai Tomizawa, Sadao Hasegawa, Nobuyuki Sasaki and Tetsumi Harakawa . “Introduction of a Wireless Body-Braille Device and a Self-learning System”, 978-1-4799-0892-9/13/$31.00 ©2013 IEEE. [4]. Fernando Ramirez Garibay, Cesar Millan Olivarria, Alejandro Federico Eufracio Aguilera, and Joel C. Huegel. “MyVox—Device for the communication between people blind, deaf, deaf-blind and unimpaired”, 978-1-4799-7193- 0/14©2014 IEEE. [5]. Abhinav Kulkarni, Kishor Bhurchandi “Low cost e-book reading device for blind people”, 2015 International Conference on Computing Communication Control and Automation 978-1-4799-6892-3/15 $31.00 © 2015 IEEE. [6]. Harshit Gupta, Aswin AnilKumar.“TheBrailleInterface”, 978-1-5090- 978-15090-0774-5/16/$31.00 © 2016 IEEE.