ARM7 based Bus Passenger Alert System for the Blind and Visually Impaired

Abstract

Safe mobility is among the greatest challenges faced by the visually challenged in day-to-day life, and making this available to them at an economical price is very important. This paper aims at the development of: 1. An affordable ARM7 based device that helps a visually impaired person keep track of buses that halt at the station and safely board the desired bus using RF transmitter and receiver modules, voice chip, loudspeaker. 2. Ultrasound based ranging to enhance the horizontal and vertical range of the smart cane to help blind person navigate comfortably with required instructions from audio output or beeper.