Smart Glasses for Obstacle Detection Using Ultrasonic Sensor

Visually impaired individuals often face difficulties in safe navigation due to the presence of unexpected obstacles in their surroundings. Traditional mobility aids such as white canes are effective only at ground level and provide limited information about obstacles at head height. This paper presents the design and implementation of a smart glasses system that uses an ultrasonic sensor to detect nearby obstacles and provide real-time audio alerts. The system is controlled by a compact microcontroller and powered by a rechargeable battery, making it lightweight and wearable. When an obstacle is detected within a predefined distance, an alert is generated through a buzzer to warn the user. Experimental observations indicate that the proposed system is reliable, cost-effective, and suitable for indoor navigation assistance.