Ingeniería Electrónica
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Browsing Ingeniería Electrónica by Author "Arcos Hurtado, Edgar Francisco (Director)"
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Item Diseño de dispositivo de aprendizaje de Braille manejado a través de una interfaz gráfica(Universidad Santiago de Cali, 2024) Galarza Jimenez, Juan Manuel; Arcos Hurtado, Edgar Francisco (Director)Visual impairment affects millions of people worldwide, and the Braille system is essential for their literacy and communication. However, traditional Braille instruction presents challenges, particularly in developing countries. This project proposes an innovative Braille teaching device that addresses these limitations and improves access to literacy. The device utilizes actuators, programming languages, and microcontrollers to create a graphical interface that generates Braille characters and symbols accurately and efficiently. The project's methodology is based on requirement identification, literature review, conceptual design, and initial prototyping, seeking a comprehensive design that maximizes the device's effectiveness and applicability in educational settings. The device, designed with a comprehensive methodology that merges deductive principles to maximize its effectiveness and applicability in educational settings, has been evaluated with visually impaired users and non-visually impaired users, generating an inclusion environment. Before using the device, the same knowledge test was administered to generate initial information. The same test was presented after teaching sessions using the device, and an average score increase of 26% was observed, along with positive feedback on ease of use, the value of auditory feedback, and the practicality of personalized learningItem Diseño e implementación de un sistema de adquisición basado en señales mioeléctricas para la ejecución de movimientos en una prótesis didáctica de miembro superior derecho(Universidad Santiago de Cali, 2019) Rentería Vivero, Juberth Andrés; Arcos Hurtado, Edgar Francisco (Director)Myoelectric signals are electrical signals produced by a muscle during the process of contraction and relaxation, each time an individual makes a movement, for example, elbow flexion. These signals can be used in the sense that with the correct acquisition and processing of myoelectric signals, it could be possible to design mechanisms that simulate movements or, failing that, the design of prostheses. In this article, the acquisition and processing of myoelectric signals and the development of a didactic prosthesis that simulates the flexion-extension movements of the elbow, pronosupination of the forearm, flexion-extension of the fingers and rotation of the thumb are performed. The data acquisition system consists of a system of surface electrodes and MyoWare muscle sensors, the acquisition hardware is based on an Arduino Mega 2560 and the controller software programmed with a state machine, connected by serial port to a computer with the software of Matlab® processing. Then, the didactic platform for teaching biomechatronics is designed and built, where the student can interact with an acquisition system based on myoelectric signals integrated into a didactic prosthesis with servomotor components and a gearmotor, with its proper graphic interface. The platform allows the acquisition of myoelectric signals in 4 different positions, where a characteristic vector of the performed movements is obtained. The platform allowed to simulate and adequately characterize the flexion-extension movements of the elbow, pronosupination of the forearm, flexion-extension of the fingers and rotation of the thumb. This platform will allow specific studies of the movement of the upper limb in a didactic way, with the capacity that in later studies other movements can be characterized or the simple combination of these.