Aiding device for visually impaired and blind people

Abstract

This device is portable, wearable, unique, low power, cost effective and user friendly. It is specially designed for blind people to help them perform their daily chores more efficiently and independently. It includes the concepts of digital image processing, circuit designing, coding/programming in python language and prototyping. Its processing unit is raspberry pi kit which works along with Arduino-Uno board, USB-camera, various sensors and headphones/speakers. It has multi functionalities which include obstacle detection in the path of the user using an array of ultrasonic sensors, face recognition, determining number of people in front of the user by face detection scheme, identifying paper currency using a camera and it also has health sensors mounted in it which includes pulse sensor and temperature sensor to monitor user’s health conditions. All of these functionalities are accessed with the help of dedicated options on a keypad and the outputs of the respective functions are given to the user through an audio signal via headphones/speakers.