Electronic Blind Aid Project

Abstract

Blind people consist of a large group of people in our society. Losing their eyesight has caused them inconvenience in performing daily tasks. Mobility aids like walking sticks are commonly used by blind people these are called as electronic travel aid. Hence, smart cane had been developed in order to increase the life quality of a blind person. The purpose of this project is to design a smart cane with ultrasonic sensor for the blind. Ultrasonic sensor will send the trigger pulse to detect obstacles. The present electronic travel aid device consist usually available ultrasonic sensor to detect obstacles on the way within a distance of one meters. It transmits ultrasound beams at a regular time interval. If any object is present on the way, the emitted ultrasound will be reflected back to the sensor. The discrete distance of the object is then measured and sensed by tactile vibrators. In addition to this, device is to give information about water pits in the traveling path. In 7th semester we made water pits detector circuit and in 8th semester we worked on Ultrasonic sensor circuit