Automated walk-in assistant for the blinds

This paper aims to provide a solution for the blind people to walk safely by detecting obstacle and generating corresponding alert signal according to the distance of the obstacle. The solution is provided by developing a walking assistant embedded in a spectacle glass with an obstacle detection module and an alarm generator. There is only one ultrasonic sensor in the obstacle detection module which can cover 3 meter distance and 60 degree angle to detect the obstacles. The obstacle detection module generates high frequency signal through the ultrasonic sensor and evaluate the echo which is received back by the sensor. Then the distance of the obstacle is measured and this information about the obstacle is delivered to a blind using the alarm generator which generates alarm corresponding to the distance. Experimental studies show that the proposed methodology provides a more cost effective, lesser weighty, simpler walk-in assistant for the blinds than existing dominant work.