Obstacle Detection Device to Enhance the Quality of Life for the Visually Impaired

Abstract

This paper presents the development of an obstacle detection device aimed at enhancing the quality of life for visually impaired individuals. The device was designed and constructed to detect obstacles in four directions, left, right, front, and back, incorporating an auditory alert system that increases in frequency as the user approaches an obstacle. Additionally, a fall detection system was integrated, enabling caregivers to automatically receive notifications via Line Notify in case of a fall or accident. Experimental evaluations demonstrated that the device exhibits high accuracy in obstacle detection across all directions and effectively identifies objects of varying colors and sizes. The sensors functioned reliably at both short and long distances. The fall detection system was tested by simulating falls in four directions: forward, backward, left, and right, with 30 trials per direction. The system achieved an accuracy rate of 95.83%, with an error margin of 4.17%, successfully sending notifications in every instance of a detected fall. A user satisfaction survey conducted with 10 visually impaired participants indicated an average satisfaction level categorized as "highest satisfaction." These findings highlight the potential of this device to significantly improve the safety and mobility of visually impaired individuals, offering a practical and effective assistive solution.