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Electronic Travel Aids Essay

816 Words4 Pages

1. INTRODUCTION

1.1 Background

A report by World Health Organization (WHO) and International Agency for Prevention of Blindness (IAPB) [1] stated that there are approximately 285 million persons around the world who are visually impaired, out of which 39 million are completely blind. Africa and other developing countries represent 90% of this statistics. Egypt specifically has one million blind, out of which 14% are children. According to WHO and IAPB, the number of blind people will increase worldwide to reach the double by 2020.
Visually impaired people are the people who can't identify smallest detail with healthy eyes. Those who have the visual acuity of 6/60 or the horizontal extent of the visual field with both eyes open less than …show more content…

ETAs are devices contain sensors that alert the blind about obstacles existence through vibration and sound [4], [5]. Such devices increase the blind’s self-confidence and provide safety, as they give the necessary help to the blind to facilitate their movement in unfamiliar environment. Several devices have been developed for mobility and navigation assistance of the blind and are typically known as travel aids or blind mobility aids. The most successful and widely used travel aid is the long cane. The walking cane used by the visually challenged people is divided in to the following subcategories: Electronic travel aids (ETAs), Electronic orientation aids (EOAs), Position locator devices (PLDs).

1.3 Objective of the thesis

The objective of this project is: (a) Design of a small portable electronic stick for the blind people. It is easier for them to find ways on daily activities without having to use the standard mobility aid available for individuals with this disability. (b) Design of a smart system for detection car sand humans in front of the blind which is important to the blind because sometimes it would be required to step back or stopping in case of danger.

1.4 Scope of

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