International Research Journal of Engineering and Technology (IRJET) Volume: 04 Issue: 03 | Mar -2017
www.irjet.net
e-ISSN: 2395 -0056 p-ISSN: 2395-0072
Interpreter System For Blind People Using Braille Pad O.G. Hastak1 Shubham Tingane2, Apurva Malokar3, Sonu Gadwe4, Vrushabh Patle5 1Assistant 2345B.E.
Professor, ETC, Priyadarshini College of Engineering, Nagpur, India Scholar, ETC, Priyadarshini College of Engineering, Nagpur, India
----------------------------------------------------------------------***---------------------------------------------------------------------Abstract: In our life, the telecommunication field plays a and fall depending on the electrical signals they receive that important role. There is a complete revolution in the way we communicate, specifically long distance communication. Irrespective of all these advancements in the field of telecommunication, the physically impaired people have not that much amount of access as compared to normal peoples for these technologies. This system is linked with to establish a two way communication path by using a computer system and Braille pad. In this we will send the message to the computer of blind person where µc is connected to the computer which is able to read the message using the MAX232 IC through built-in command. Then it converts the character of the message by using a lookup table. The converted message is in the form of a braille language which is read by the blind person. For vibrating the braille pad we use relays and µc assembly, which gives sustainable platform and help blind person to read message. Key Words: MAX232IC, Braille pad, lookup table, µc
1. INTRODUCTION Present days, blindness is one of the major diseases. 37 million people across world-wide are blind and out of them over 15 million are from India. So there is high demand in developing an assisting device for them to provide education through the low cost Braille pad. Braille was introduced in 1821 by Louis Braille, a Frenchman. The Braille system is a world-wide system used by blind and visually impaired people for reading and writing. Braille is read by passing the fingers over characters made up of an arrangement of one to eight embossed points. It has been adapted to almost every known language. Braille character consists of patterns of raised dots arranged in cells of up to eight dots in a 4x2 configuration. Braille code is available for alphabets, numeral and punctuation marks.. The developed Braille pad operates on electromagnetic principle. When voltage is applied to dots in each eight-pin array, various combinations of elevated and retracted pins produce the effect of raised dots or dot-absences. Proposed Braille pad consist of six Braille cells. Each Braille cell consists of eight movable pins in a rectangular array. The pins can rise
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simulates the effect of the raised dots of Braille impressed on paper. In the electromagnetic Braille pad that contains a coil surrounds each pin. The pin is attached to an iron rod passing through the casing. When a voltage passes through the coil, the pin is popped upward, when there is no voltage applied, the pin will not be raised. The combination of raised dots represents a character. Electromagnetic coils are used for actuating the pins in the Braille cell. Braille pad and specially designed keyboard can be integrated with the normal computer monitor. Speech synthesis is the artificial production of human speech 2. LITERATURE SURVEY Paper 1: Author- G. Devi Priya, “Mobile Phone Hardware Based Braille Pad” IJRCCE-2015 International Conference. Description: The user sends the SMS to the blind person’s mobile number which is connected to the microcontroller which reads the SMS using GSM module through the AT commands and then converts the letters of the SMS into the Braille language using the lookup table in its memory. With the help of 6 relays Microcontroller vibrates the Braille pad on which the blind person can read the SMS. For sending a SMS, the microcontroller converts the typed Braille letter on Braille pad to the English alphabets using the Lookup table. Loud speaker is also used for making the voice announcement. From this paper, we understood working mechanism of various types of relays. This concept will help to generate embossing on paper so that blind person can interpret it. Paper 2: Author- Harshal A. Dahake, “Braille Pad Advance SMS System for Blind Peoples using” ICGTETM-2016 Description: Here system is linked with a GSM-GPS module to track the location of the blind person and to establish a two way communication path by using a wireless technology. Here the user sends the SMS to the blind person’s mobile number
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