Design and Development of Intelligent Assistive Glasses for the Visually Impaired

Abstract

 This paper presents the design and implementation of intelligent navigation and emergency rescue glasses for visually impaired individuals, integrating multiple sensing and feedback modules based on the STM32F103RCT6 microcontroller. The system combines a camera module utilizing the OV2640 sensor, an ultrasonic ranging module (HC-SR04), and a BDS navigation and positioning unit to achieve accurate environmental perception, real-time obstacle detection, and location tracking. The vibration output and fault alarm modules are designed to provide intuitive feedback and ensure equipment reliability, supported by lightweight and ergonomic humanized design principles. Experimental testing under various indoor and outdoor conditions demonstrates that the system achieves navigation accuracy within 5 meters and obstacle detection error within 5 centimeters. The glasses effectively support safe mobility and emergency assistance for the blind, offering a practical, low-cost, and user-friendly solution for intelligent navigation and safety enhancement.