Browsing by Author "Valencia Palacios, Angie Clarena"
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Item Sistema para la ubicación, sujeción y adquisición de señales mioeléctricas para el desarrollo de prótesis de amputación transhumeral(Universidad Santiago de Cali, 2022) Valencia Palacios, Angie Clarena; Bermeo Varón, Leonardo Antonío (Director)Myoelectric signal acquisition systems are currently of great benefit in research and the clinical field and rehabilitation. The prosthesis control with myoelectric systems is considered one of the best-known schemes with multiple benefits for people with different types of amputation. This is of a great interest since the arrangement, adjustment, and ergonomics of the mechanism that allows the distribution of the sensors, becomes a fundamental part in the control of prosthesis efficiency. In the present work is developed a system of location, fastening, and acquisition of myoelectric signals for prosthesis of a transhumeral amputation patient to avoid loosening, misadjustment, and fall of sensors. Additionally, to improve the electromyographic acquisition. System testing was performed on 6 (5-1) non-amputees and transhumeral amputees to evaluate the stability, ergonomics, and signal acquisition efficiency. The subject performed the gestures of (i) elbow flexion, (ii) elbow extension, (iii) forearm pronation, (iv) forearm supination, (v) hand opening, and (vi) hand closing. Is realized the feature extraction corresponding to rectified signal, mean absolute value, root mean square, and variance. The results indicate that the acquisition system replaces the tedious and time-consuming conventional acquisition protocols with adequate feature extraction.