Design and analysis of a collision avoidance system for the visually impaired

The visually impaired face a lot of challenges in their day to day life. The major challenge for a visually impaired person is being able to walk and commute safely in a hectic environment. Various Collision avoidance systems have been developed to alert the user of an imminent obstacle as well as to help in navigation through a given area. This paper focuses on the implementation of a prototype for a collision avoidance system which can alert the user of an obstacle in the linear direction using a combination of audio and haptic feedback. The aim was to build a fully functional prototype for the visually impaired using PIC microcontroller, ultrasonic module and other peripherals. Our goal is to build a fully functioning device which could be commercially produced as a useful product for the visually impaired, considering its high efficiency, low power consumption, accuracy, and low cost components used.