Diseño de interfaz operada mediante un sistema embebido para rehabilitación y preparación de pacientes con ausencia parcial de extremidad superior aspirantes a prótesis mioeléctrica

Abstract

This technical project is focused on the development of an interface design that contributes to technology in the area of physical rehabilitation of patients with partial absence of an upper extremity. It seeks to unite two functionalities in a single design: electromyography and electrostimulation. The interface consists of a screen that will allow the user to access the two functions offered, electrostimulation and electromyography. This screen will be simulated and connected through digital serial ports, created and interconnected by the Virtual Serial Port Driver software. The electromyography circuit is based on the acquisition of two signals through electrodes, signals that will pass through an instrumentation amplifier, a notch filter, a high-pass filter and a low-pass filter, which were designed in each of its components. to meet the specific needs of this technical project. After the filtering and amplification phase, the signals will be processed by the Arduino Uno embedded system, where this information will be transmitted to the Nextion screen. Muscle electrostimulation refers to a process of amplification and control of electrical energy towards the receptor, which can be produced from very low voltages in direct current. Starting from a circuit with basic and practical components, a simulation can be achieved that will be activated and deactivated through the previously mentioned screen, and frequency, pulses and power will be regulated by means of potentiometers.