The Oxford College of EngineeringDepartment of ISE.

Seminar on:

“Location Finding for Blind People Using Voice Navigation Stick”

Presented By: SANJANA V 1OX12IS115

AGENDA

INTRODUCTION PROBLEM STATEMENT EXISTING METHODS PROPOSED SYSTEM BLOCK DIAGRAM BENEFITS & LIMITATIONS REFERENCES

INTRODUCTION

The system facilitates blind people to navigate independently without any external help by means of talkative assistance.

The system is linked with a GSM-GPS module to pin-point the location of the blind person and to establish a two way communication path in a wireless fashion.

The system is equipped with obstacle sensors such as ULTRASONIC and IR sensor to alert the blind person.

PROBLEM STATEMENT

Over 285 million people are visually impaired worldwide: 39 million of them being blind and 246 million have low vision.

About 90% of the world’s visually impaired live in developing countries.

The blind traveller should depend on any other guide like blind cane, people information, trained dogs, etc.

Existing Methods & Disadvantages

Blind Cane• Awkwardness.• Recognition of obstacles up to knee level.• Does not protect from obstacles at torso and face level.• Prone to injuries.

Trained Guide Dogs• 1% usage.• Expensive to Train Dogs ( $40k in USA).• Training period on an average 6 months.• Difficulty in dog up-keeping costs and lifestyle changes.

Human Guide• Dependency.• Feeling of being a burden.

PROPOSED SYSTEM

The main objective of the voice navigation stick are:1. GPS2. GSM3. Obstacle Sensors:

Ultrasonic Sensor IR Sensor

GPS & GSM

GPS: Features the 16 channels. This completely enabled GPS receiver provides high position, velocity and time accuracy performances as well as high sensitivity and tracking capabilities.

GSM: (Global System for Mobile communication) is a digital mobile telephony system. GSM uses a variation of time division multiple access (TDMA). GSM digitizes and compresses data, then sends it down a channel with two other streams of user data, each in its own time slot.

GPS

ULTRASONICSENSOR

Ultrasonic sensors are used to measure distances between the obstacle/object and sensor.

Consists of ultrasonic transmitter and receiver.

Transmitter transmits signal in one direction, transmitted signal is reflected back by obstacle and received by receiver.

-Working of Ultrasonic Sensor

BLOCK DIAGRAM

BENEFITS & LIMITATIONBenefits Limitations

Accurate detection of obstacles of left, right and front side.

Recognition of objects.

Very convenient for the users- Independency and Confidence.

Not water proof.

Detection of ground level to head level.

Low cost.(Rs. 3000 approx.)

Very low power consumption.

High Performance.

Auto detection and auto alarming.

REFERENCES S. Sai Santhosh, T. Sasiprabha, R. Jeberson,. "BLI – NAV Embedded Navigation

System for Blind People." IEEE, 277-282, 2010:. A. R. García, R. Fonseca. A. Durán. "Electronic long cane for locomotion improving

on visual impaired people." IEEE, pp.58-61, 2011 Alshbatat, Abdel Ilah Nour. "Automated Mobility and Orientation System for Blind

or Partially." INTERNATIONAL JOURNAL ON SMART SENSING AND INTELLIGENT SYSTEMS, 568-582, 2013.

Mahdi Safaa A., Muhsin Asaad H. and Al-Mosawi Ali I. "Using Ultrasonic Sensor for Blind and Deaf persons Combines Voice." International Science Congress Association, 50-52, 2012

Harshad Girish Lele, Viten Vilas Lonkar, Varun Vasant Marathe, Mrunmayi Mohan Modak. "electronic path guidance for visually impaired people." The International Journal Of Engineering And Science (IJES), 09-14, 2013.

K. Steed-Terry, “Integrating GIS and the Global Positioning System,” 2nd ed. ESRI inc. pp.1–12, 2001.

A. Hub and B. Schmitz, “Addition of RFID-Based Initialization and Object Recognition to the Navigation System TANIA,” Visualization and Interactive Systems Group, Stuttgart, 2009.

QUESTIONS

THANK YOU