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Benito Codina

Universidad de La Laguna, Didactica e Investigación Educativa, Faculty Member

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Doctor in Education Sciences
Psychologist
Associate Professor at University of La Laguna, Tenerife, Canary Islands, Spain.
O&M and LV Specialist for the Spanish National Blind Organization (ONCE)
Phone: +34922319219

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Universidad de La Laguna

Atandile Ngubelanga

Cape peninsula University of technology

Universidad de Valparaiso

dianna lunsford

Sandra Páez Ramos

University Politehnica of Bucharest

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Papers by Benito Codina

Safe Displacements Device for All Conditions Blind People

Electronics

One of the challenges faced by the blind to achieve optimum mobility is obstacles detection and a... more One of the challenges faced by the blind to achieve optimum mobility is obstacles detection and avoidance. The traditional aid is the mobility white cane, but nowadays, there are also electronic travel aids. However, none of them is widely used. The eBAT (electronic Buzzer for Autonomous Travel) has been designed to provide protection and easy usage, interacting with a user’s mobile phone. To improve its performance, a usage test was carried out by 25 totally blind users divided by sex, age range and autonomy in mobility. The main results are that the eBAT gives a reduction in the involuntary contacts but also decreases the walking speed. There are differences between sex, age and mobility groups but with limited statistical significance, and there are also some correlations between variables.

Análisis de la realidad de la mediación intercultural en Canarias desde la opinión de sus agentes

La formación para el desarrollo de una sociedad intercultural [Recurso electrónico], 2009, ISBN 978-84-691-9787-5, págs. 682-708, 2009

Low-Cost Ultrasonic Range Improvements for an Assistive Device

Sensors

To achieve optimal mobility, visually impaired people have to deal with obstacle detection and av... more To achieve optimal mobility, visually impaired people have to deal with obstacle detection and avoidance challenges. Aside from the broadly adopted white cane, electronic aids have been developed. However, available electronic devices are not extensively used due to their complexity and price. As an effort to improve the existing ones, this work presents the design of a low-cost aid for blind people. A standard low-cost HC-SRF04 ultrasonic range is modified by adding phase modulation in the ultrasonic pulses, allowing it to detect the origin of emission, thus discriminating if the echo pulses come from the same device and avoiding false echoes due to interference from other sources. This improves accuracy and security in areas where different ultrasonic sensors are working simultaneously. The final device, based on users and trainers feedback for the design, works with the user’s own mobile phone, easing utilization and lowering manufacturing costs. The device was tested with a set ...

Inertial Measurement Unit Sensors in Assistive Technologies for Visually Impaired People, a Review

Sensors, 2021

A diverse array of assistive technologies have been developed to help Visually Impaired People (V... more A diverse array of assistive technologies have been developed to help Visually Impaired People (VIP) face many basic daily autonomy challenges. Inertial measurement unit sensors, on the other hand, have been used for navigation, guidance, and localization but especially for full body motion tracking due to their low cost and miniaturization, which have allowed the estimation of kinematic parameters and biomechanical analysis for different field of applications. The aim of this work was to present a comprehensive approach of assistive technologies for VIP that include inertial sensors as input, producing results on the comprehension of technical characteristics of the inertial sensors, the methodologies applied, and their specific role in each developed system. The results show that there are just a few inertial sensor-based systems. However, these sensors provide essential information when combined with optical sensors and radio signals for navigation and special application fields....

El empleo de las Píldoras Formativas para el aprendizaje de contenidos específicos: la Rehabilitación de Personas con Discapacidad Visual

Visually Impaired Interaction with the Mobile Enhanced Travel Aid eBAT

Human Systems Engineering and Design II, 2019

The visually impaired face problems in their daily life mobility. Despite the use of the white ca... more The visually impaired face problems in their daily life mobility. Despite the use of the white cane as the most popular aid, there is still no electronic aid to replace or complement its limitations. The eBAT (electronic Buzzer for Autonomous Travel) has been designed to provide information of the environment with a simple user interaction. Through a mobile phone, the blinds can perceive the distance to the obstacles with vibrations, using it as an haptic device. Results show that the device reduce the involuntary collisions at the cost of increasing the travel time.

Validation of an eBAT as a mobility aid for blind people

Assistive Technology, 2020

One of the challenges faced by blind persons to achieve optimal mobility is the detection and avo... more One of the challenges faced by blind persons to achieve optimal mobility is the detection and avoidance of obstacles located in their travel path. Besides the widely used white cane, alternative or complementary devices have been developed, such as electronic aids that provide feedback about the environment. However, the devices available have been unable to provide an optimal solution with widespread acceptance, motivating the present work. The eBAT (electronic Buzzer for Autonomous Travel) is designed to offer optimal protection and employs the user's own mobile phone for easier use and reduced manufacturing costs. For this work, a group of 25 blind individuals was used to validate the eBAT based on the single-subject with reversal method (ABA study). The results show a significant decrease in the number of involuntary contacts in an unknown travel path between the first phase of the study, which did not involve the eBAT, and the second, where it was used. When the device was again removed in the third phase, the number of contacts rose. We may therefore conclude that the eBAT fills an important gap in mobility aids for blind people, yielding a clear benefit by reducing the participants' feeling of insecurity.

La mediación en una cultura de la diversidad. El mediador intercultural

ABSTRACT

Estudio de la eficacia de un nuevo programa multicomponente para el abandono del hábito de fumar

Representación interna del espacio en ciegos y en videntes: hipótesis cuasi-visual y amodal

… en la Europa de los 90: …, Jan 1, 1990

Información del artículo Representación interna del espacio en ciegos y en videntes: hipótesis cu... more

Evaluación de la capacidad de representación espacial en ciegos: la prueba Haptic-Kohs

Integración: Revista sobre …, Jan 1, 1998

Resumen: Se presentan los resultados de un trabajo en el que se estudian la fiabilidad y validez ... more

Movilidad con perro-guía: bastón y guía vidente como elementos complemnetarios de familiarización con nuevos entornos

… : Revista sobre ceguera y deficiencia visual, Jan 1, 2007

Diagnóstico e instrucción de los prerrequisitos en orientación y movilidad para deficientes visuales en edad preescolar

Jornadas sobre educación de niños ciegos y …, Jan 1, 1989

... movilidad para deficientes visuales en edad preescolar. Autores: Benito Codina Casals; Locali... more

La representacion interna del espacio a partir de descripciones verbales en ciegos Internal spatial representation of the blind from verbal descriptions

Cognitiva, Jan 1, 1994

Abstract: La finalidad de esta investigación es evaluar la capacidad de las personas ciegas para ... more

TÉCNICAS E INSTRUMENTOS DE INVESTIGACIÓN Y DIAGNÓSTICO EN EDUCACIÓN 9 CRÉDITOS. OPTATIVA 120739137 (PROYECTO PILOTO CRÉDITO …

webpages.ull.es

Modelos mentales del espacio: construcción a partir de descripciones verbales e influencia en el desplazamiento

Congreso estatal sobre …, Jan 1, 1996

Información del artículo Modelos mentales del espacio: construcción a partir de descripciones ver... more

Modelo de instrucción en orientación y movilidad para niños con ceguera o baja visión y déficit mental asociado

Informes y documentos, Jan 1, 1993

Programación educacional para deficientes visuales con retraso mental severo-profundo asociado

… sobre educación de …, Jan 1, 1989

Información del artículo Programación educacional para deficientes visuales con retraso mental se... more

La evaluación psicológica y educativa de las personas ciegas y deficientes visuales en España

Presentación 3 Estudios, Jan 1, 1992

Satisfacción en el trabajo de los profesionales de rehabilitación básica y educación de adultos de la Organización Nacional de Ciegos

… : Revista sobre ceguera y deficiencia visual, Jan 1, 1995

... Satisfacción en el trabajo de los profesionales de rehabilitación básica y educación de adult... more

Safe Displacements Device for All Conditions Blind People

Electronics

One of the challenges faced by the blind to achieve optimum mobility is obstacles detection and a... more One of the challenges faced by the blind to achieve optimum mobility is obstacles detection and avoidance. The traditional aid is the mobility white cane, but nowadays, there are also electronic travel aids. However, none of them is widely used. The eBAT (electronic Buzzer for Autonomous Travel) has been designed to provide protection and easy usage, interacting with a user’s mobile phone. To improve its performance, a usage test was carried out by 25 totally blind users divided by sex, age range and autonomy in mobility. The main results are that the eBAT gives a reduction in the involuntary contacts but also decreases the walking speed. There are differences between sex, age and mobility groups but with limited statistical significance, and there are also some correlations between variables.

Análisis de la realidad de la mediación intercultural en Canarias desde la opinión de sus agentes

La formación para el desarrollo de una sociedad intercultural [Recurso electrónico], 2009, ISBN 978-84-691-9787-5, págs. 682-708, 2009

Low-Cost Ultrasonic Range Improvements for an Assistive Device

Sensors

To achieve optimal mobility, visually impaired people have to deal with obstacle detection and av... more To achieve optimal mobility, visually impaired people have to deal with obstacle detection and avoidance challenges. Aside from the broadly adopted white cane, electronic aids have been developed. However, available electronic devices are not extensively used due to their complexity and price. As an effort to improve the existing ones, this work presents the design of a low-cost aid for blind people. A standard low-cost HC-SRF04 ultrasonic range is modified by adding phase modulation in the ultrasonic pulses, allowing it to detect the origin of emission, thus discriminating if the echo pulses come from the same device and avoiding false echoes due to interference from other sources. This improves accuracy and security in areas where different ultrasonic sensors are working simultaneously. The final device, based on users and trainers feedback for the design, works with the user’s own mobile phone, easing utilization and lowering manufacturing costs. The device was tested with a set ...

Inertial Measurement Unit Sensors in Assistive Technologies for Visually Impaired People, a Review

Sensors, 2021

A diverse array of assistive technologies have been developed to help Visually Impaired People (V... more A diverse array of assistive technologies have been developed to help Visually Impaired People (VIP) face many basic daily autonomy challenges. Inertial measurement unit sensors, on the other hand, have been used for navigation, guidance, and localization but especially for full body motion tracking due to their low cost and miniaturization, which have allowed the estimation of kinematic parameters and biomechanical analysis for different field of applications. The aim of this work was to present a comprehensive approach of assistive technologies for VIP that include inertial sensors as input, producing results on the comprehension of technical characteristics of the inertial sensors, the methodologies applied, and their specific role in each developed system. The results show that there are just a few inertial sensor-based systems. However, these sensors provide essential information when combined with optical sensors and radio signals for navigation and special application fields....

El empleo de las Píldoras Formativas para el aprendizaje de contenidos específicos: la Rehabilitación de Personas con Discapacidad Visual

Visually Impaired Interaction with the Mobile Enhanced Travel Aid eBAT

Human Systems Engineering and Design II, 2019

The visually impaired face problems in their daily life mobility. Despite the use of the white ca... more The visually impaired face problems in their daily life mobility. Despite the use of the white cane as the most popular aid, there is still no electronic aid to replace or complement its limitations. The eBAT (electronic Buzzer for Autonomous Travel) has been designed to provide information of the environment with a simple user interaction. Through a mobile phone, the blinds can perceive the distance to the obstacles with vibrations, using it as an haptic device. Results show that the device reduce the involuntary collisions at the cost of increasing the travel time.

Validation of an eBAT as a mobility aid for blind people

Assistive Technology, 2020

One of the challenges faced by blind persons to achieve optimal mobility is the detection and avo... more One of the challenges faced by blind persons to achieve optimal mobility is the detection and avoidance of obstacles located in their travel path. Besides the widely used white cane, alternative or complementary devices have been developed, such as electronic aids that provide feedback about the environment. However, the devices available have been unable to provide an optimal solution with widespread acceptance, motivating the present work. The eBAT (electronic Buzzer for Autonomous Travel) is designed to offer optimal protection and employs the user's own mobile phone for easier use and reduced manufacturing costs. For this work, a group of 25 blind individuals was used to validate the eBAT based on the single-subject with reversal method (ABA study). The results show a significant decrease in the number of involuntary contacts in an unknown travel path between the first phase of the study, which did not involve the eBAT, and the second, where it was used. When the device was again removed in the third phase, the number of contacts rose. We may therefore conclude that the eBAT fills an important gap in mobility aids for blind people, yielding a clear benefit by reducing the participants' feeling of insecurity.

La mediación en una cultura de la diversidad. El mediador intercultural

ABSTRACT

Estudio de la eficacia de un nuevo programa multicomponente para el abandono del hábito de fumar

Representación interna del espacio en ciegos y en videntes: hipótesis cuasi-visual y amodal

… en la Europa de los 90: …, Jan 1, 1990

Información del artículo Representación interna del espacio en ciegos y en videntes: hipótesis cu... more

Evaluación de la capacidad de representación espacial en ciegos: la prueba Haptic-Kohs

Integración: Revista sobre …, Jan 1, 1998

Resumen: Se presentan los resultados de un trabajo en el que se estudian la fiabilidad y validez ... more

Movilidad con perro-guía: bastón y guía vidente como elementos complemnetarios de familiarización con nuevos entornos

… : Revista sobre ceguera y deficiencia visual, Jan 1, 2007

Diagnóstico e instrucción de los prerrequisitos en orientación y movilidad para deficientes visuales en edad preescolar

Jornadas sobre educación de niños ciegos y …, Jan 1, 1989

... movilidad para deficientes visuales en edad preescolar. Autores: Benito Codina Casals; Locali... more

La representacion interna del espacio a partir de descripciones verbales en ciegos Internal spatial representation of the blind from verbal descriptions

Cognitiva, Jan 1, 1994

Abstract: La finalidad de esta investigación es evaluar la capacidad de las personas ciegas para ... more

TÉCNICAS E INSTRUMENTOS DE INVESTIGACIÓN Y DIAGNÓSTICO EN EDUCACIÓN 9 CRÉDITOS. OPTATIVA 120739137 (PROYECTO PILOTO CRÉDITO …

webpages.ull.es

Modelos mentales del espacio: construcción a partir de descripciones verbales e influencia en el desplazamiento

Congreso estatal sobre …, Jan 1, 1996

Información del artículo Modelos mentales del espacio: construcción a partir de descripciones ver... more

Modelo de instrucción en orientación y movilidad para niños con ceguera o baja visión y déficit mental asociado

Informes y documentos, Jan 1, 1993

Programación educacional para deficientes visuales con retraso mental severo-profundo asociado

… sobre educación de …, Jan 1, 1989

Información del artículo Programación educacional para deficientes visuales con retraso mental se... more

La evaluación psicológica y educativa de las personas ciegas y deficientes visuales en España

Presentación 3 Estudios, Jan 1, 1992

Satisfacción en el trabajo de los profesionales de rehabilitación básica y educación de adultos de la Organización Nacional de Ciegos

… : Revista sobre ceguera y deficiencia visual, Jan 1, 1995

... Satisfacción en el trabajo de los profesionales de rehabilitación básica y educación de adult... more

La facilitación de la accesibilidad comunicativa en píldoras y vídeos formativos en materia de intervención con personas con discapacidad visual