AVEUGLE AIDERECHOLOCATION BASED SYSTEM FOR BLINDS

Echolocation Based System for Blinds

Abstract

One of the most essential and intricate senses we have as humans, is our eyes. It facilitates the perception of light, colour, and depth as well as the visualization of objects. We have the ability to see the things around us but there are people who don’t have this ability to enjoy the beauty of nature, who come under the category of BVIPs (Blind and Visually Impaired Persons). They face many challenges in their daily life especially when they traverse around. They will unquestionably need some aid or somebody’s help to amble safely. This paper mainly aims at creating a way out to their problem. The idea was inspired from the bat’s ability to echolocate obstacles and food. Echolocation is the phenomenon of locating objects based on reflected sound. The paradigm is utilized in the proposed approach to act as a conduit between the blind and their surroundings. Anomalies like obstructions, staircases and damp terrains can all be detected using sensors. For blinds their way of understanding the environment will be through touch and sound. The device helps them to navigate successfully by creating an image of the surrounding in their mind. It is a small handy device that does not hinder other people. Ultrasonic technology and Direct Distance Frequency Synthesizer are the main principles for the device. It is a technique for creating an analogue waveform, typically a sine wave by first creating a time-varying digital signal and then converting it from digital to analogue. Ultrasonic sensors are used as proximity sensors. Our system works similar to that of RADAR. Owing to the technologically advanced era we live in, we decided to assist these people with disability by developing a technology- based solution. It is a useful tool that will be very helpful to blind people.