Audio Guidance For Blind (agb22) - 2-1 2u514o

AUDIO GUIDANCE FOR BLINDS Under the Guidance of : HEMA. S.R Project associates: Ashish S R Deepak B Raksha R S Rashmi A M AUDIO GUDIENCE FOR BLINDS

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OVERVIEW         

Introduction Existing solutions Objective Working principle Block diagram Hardware components Software components Result conclusion

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INTRODUCTION 

There are approximately 12 million blind or visually impaired people in the India alone.



Currently most blind people rely on other people, dogs, and their canes to find their way in buildings.



Many disabled people prefer to do things independently rather than rely on others.



The Audio Guidance For Blinds can provide a solution to this problem

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EXISTING SOLUTIONS 

Smart Canes – provide obstacle detection.



Sonar vision glasses – also may provide obstacle detection.



GPS navigation systems – provide directions, but not reliable or accurate enough for use in buildings.

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OBJECTIVE 

The main goal of the project is to provide a cost- effective solution to allow blind people to navigate within building.



The Audio Guidance System hopes to allow visually impaired s to simply speak the desired destination, and be guided there with the use of audio instructions.



The system hopes to provide a portable unit that can easily be carried and operated by a visually impaired . It could easily be incorporated into a walking cane. AUDIO GUDIENCE FOR BLINDS

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WORKING PRINCIPLE 

The technique is used to determine the destination location by using RFID.



In this technique unique RFID tag is assigned to each of the locations inside the buildings such as steps, rooms, elevator, rest room etc.



RFID reader continuously scans the tag and if the destination code matches with that of present RFID code then the person has reached his desired location.



If the code does not matches then the system has to guide him to his destination location. AUDIO GUDIENCE FOR BLINDS

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WORKING FLOW

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BLOCK DIAGRAM

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COMPONENTS 

HM-2007 Speech recognition kit



P89V51RD2 Micro controller



APR9600 module



EM-18 RFID Reader and Tags



Speaker or Headphone



LCD

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SCHEMATIC DIAGRAM

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HM2007 SPEECH RECOGNITION MODULE 

HM2007 is programmable, in the sense that programmer train the words (or vocal utterances) as programmer want the circuit to recognize.



In our project we are using HM2007 module to convert the voice input given by the blind into binary codes which is required by the micro-controller to scan the tags.



This module is connected to PORT 0 of microcontroller.

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HM-2007 SPEECH RECOGNITION MODULE (CONTD..) Specifications 

Input Voltage - 9 to 15 V DC Use a commonly available 12V 500ma DC Adapter.



Output Data - 8 bits at 5V Logic Level.



Interface-Any microcontroller like 8051, PIC or AVR can be interfaced

to

data

port

interpret. AUDIO GUDIENCE FOR BLINDS

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to

P89V51RD2 MICROCONTROLLER Features 

80C51

U

with

5V

operating voltage from 0 to 40 MHz. 

64 kB of on-chip flash code memory.



AUDIO GUDIENCE FOR BLINDS

Four 8-bit I/O ports.

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P89V51RD2 MICROCONTROLLER(CONTD..) 

Three 16-bit timers/counters.



Programmable watchdog timer.



Eight interrupt sources with four priority levels.



Two DPTR .



TTL- and CMOS-compatible logic levels.

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P89V51RD2 MICROCONTROLLER BLOCK DIAGRAM

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LCD Features : 

JHD162A is the LCD



It has a with 2 rows and 16 columns.



Supply voltage Vdd = 5 v Operating voltage

=1.5mA Input voltage = 2.2 v AUDIO GUDIENCE FOR BLINDS

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Idd

APR 9600 MODULE FOR VOICE OUTPUT 

Single-chip, high-quality voice recording & playback solution.



Non-volatile Flash memory technology



-Selectable messaging options



-friendly, easy-to-use operation.



Low power consumption. Operating current: 25 mA typical Standby current: 1 uA typical Automatic power-down



Chip Enable pin for simple message expansion AUDIO GUDIENCE FOR BLINDS

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APR 9600 MODULE(CONTD..) 

The APR9600 device offers true

single-chip

recording,

voice

non-volatile

storage,

and

capability

for

playback 40

to

60

seconds. 

The device s both random and sequential access of multiple messages. AUDIO GUDIENCE FOR BLINDS

Pin diagram 2/26/16

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APR 9600 MODULE

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RFID READER & TAGS A basic RFID system consists of three components: 

An antenna or coil.



A transceiver (with decoder).



A transponder (RF tag)

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RFID READER & TAGS (CONTD..)

RFID Reader AUDIO GUDIENCE FOR BLINDS

RFID Tag 2/26/16

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RFID READER & TAGS(CONTD..) ADVANTAGES OF RFID 

No ”line of sight” requirements



RFID tags can be read through materials without line of sight.



More automated reading and allowing more proactive, real-time tracking.



Improved read rates



Greater data capacity AUDIO GUDIENCE FOR BLINDS

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SPEAKER

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SOFTWARE DESCRIPTION



Microcontroller needs to all hardware components so to make it ive we use Keil software.



Keil provides the ease of writing the code in either C or ASSEMBLY language.

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KEIL UVISION 2 This is an IDE (Integrated Development Environment) that helps programmer to write, compile, and debug embedded programs. It encapsulates the following components: 

A project manager.



Tool configuration.





Editor. A powerful debugger. AUDIO GUDIENCE FOR BLINDS

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CREATION OF NEW PROJECT

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SELECTING THE DEVICE

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CONFIGURING THE ESSENTIALS

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ADDITION OF FILES IN SOURCE GROUP

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RUNNING THE PROGRAM

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CODE FLOW

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CODE FLOW (CONTD..)

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ADVANTAGES 

As mentioned previously with 12 million visually impaired people in INDIA alone,it would be smart for businesses to cater to their needs.



The use of RFID technology can help to do this at a lower cost than most other technologies on the market today.



This system would give the visually impaired an opportunity to integrate with society more easily. These people would have a greater sense of independence.



The entire system can be miniaturized so that it will be easy to carry . AUDIO GUDIENCE FOR BLINDS

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DISADVANTAGES 

Long range readers require more power and cost and RFID tag reads and read ranges may be inconsistent.



Speech recognition may be problematic due to unwanted noise and false reads.

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RESULT

Snap shot of prototype AUDIO GUDIENCE FOR BLINDS

Blind person carrying final model 2/26/16

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CONCLUSION 

The project clearly gives a good solution in the indoor environment for blinds which is completely controlled by the microcontroller using RFID technology.



This unit is friendly and cost effective, thus the system urges on non dependence of blinds on other people.



Hence the system could be implemented in blind schools and building where blind people work, allowing the blinds for safe navigation .

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FUTURE ENHANCEMENTS 

By making use of more sophisticated RFID tags with larger range in the future an effective guidance system for blind can be implemented.



Inside an organization the system can be implemented and developed

so that

the central can be able to

monitor the navigation of blind and can gain continuous access to his location via LAN, GSM,etc. AUDIO GUDIENCE FOR BLINDS

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REFERENCES 

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 

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The 8051 Microcontroller Architecture, Programming & Applications, 2e Kenneth J.Ayala;,Penram International, 1996 / Thomson Learning 2005. The 8051 Microcontroller and Embedded Systems Using Assembly and C, 2e,Muhammad Ali Mazidi, Janice Gillispie Mazidi, Rolin Mckinaly. files.spogel.com./abstracts/p-0212audio guidance for blind.pdf http://en.m.wikibooks.org/wiki/embedded systems/8051 microcontroller http://en.mwikipedia.org/wiki/radio-frequency identification

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THANK YOU

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