Intelligent White Cane for Visually Impaired People Based on an Ultrasonic Sensor

Nicolás Pozo, Fernando Yupa, Edy Ayala

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This article describes the development of a device adaptable to a white cane for guidance and mobility of visually impaired people. The proposal consists of an economical, portable, easy-to-maintain, and non-invasive device designed with a microcontroller which receives and processes signals obtained from an ultrasonic sensor. Similarly, it alerts obstacles’ distances to the user based on ultrasonic measurements. The device is a compact prototype which is adapted to the handle of the white cane and can be removed for a comfortable transportation. The principle of operation is based on the detection of aerial obstacles that represent a threat for the user mobility. The ultrasonic sensor sends the signal to the microcontroller which generates output alerts and transmitted to the user by stimuli which are auditory or haptic. These signals respond to an algorithm implemented in the controller. The device has been designed not to interfere with the user's senses and has been programmed including different alert modes allowing user adaptation. The algorithm has been developed in a C-based programming language, and for the validation of the development, tests have been performed with visually impaired persons to verify the fulfillment of the proposed objectives in this research.

Original languageEnglish
Title of host publicationCommunication, Smart Technologies and Innovation for Society - Proceedings of CITIS 2021
EditorsÁlvaro Rocha, Paulo Carlos López-López, Juan Pablo Salgado-Guerrero
PublisherSpringer Science and Business Media Deutschland GmbH
Pages645-657
Number of pages13
ISBN (Print)9789811641251
DOIs
StatePublished - 2022
Event7th International Conference on Science, Technology and Innovation for Society, CITIS 2021 - Virtual, Online
Duration: 26 May 202128 May 2021

Publication series

NameSmart Innovation, Systems and Technologies
Volume252
ISSN (Print)2190-3018
ISSN (Electronic)2190-3026

Conference

Conference7th International Conference on Science, Technology and Innovation for Society, CITIS 2021
CityVirtual, Online
Period26/05/2128/05/21

Bibliographical note

Publisher Copyright:
© 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

Keywords

  • Assistive technology
  • Intelligent white cane
  • Ultrasound

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