Design and construction of an obstacle-detecting glasses for the visually impaired

This paper introduces a wearable eyeglass with an ultrasonic sensor to help the blind to navigate alone safely, while avoiding obstacles that may be encountered, fixed or mobile, thereby preventing any possible accident. The main component of this work is the ultrasonic sensor, which is used to measure the distance to an object using sound waves. By recording the elapsed time between the wave being generated and the wave bouncing back, it is possible to calculate the distance between the sensor and the object. A limitation of the project is that even though it can operate alone as an independent device, its full functionality to be achieved, it needs to be part of a whole system hence making it an auxiliary device. An integration of this device with a smart walking stick or an automatic wheelchair can help realize its full potential and make it the ultimate mobility aid. This system is cheap, fast and easy to use and it is an innovation for the blind and visually impaired people to help them overcome the various problems in their daily life.