Tecnologia assistiva: protótipo de bengala com leitor QR Code e Arduino

Abstract

Accessibility refers to the ability to provide conditions for people with disability or reduced mobility can move safely and independently in environments and spaces, using available systems and technologies. In this context, Tech- Assistive Technology (AT) plays an important role in helping people who have some type of disability. The central objective of this work was to develop a prototype of smart cane capable of reading Quick Response Code (QR Code), providing sound information about the location to assist people with visual impairment, low vision or blindness. For this, a Mega 2560 board integrated with an ultrasonic sensor was used. HC-SR04, an ESP32-CAM module, a DFPlayer Mini for audio playback and a speaker. During the tests carried out, the prototype demonstrated an accuracy of 89reading QR Codes, with an average time of 7 to 10 seconds for identification and name reproduction. It was observed that reading QR Codes has better performance in environments with good lighting, regardless of the size and quality of the print to Reading.