Projeto de módulo de detecção de movimento da mão

Abstract

This work aims to implement a low cost module capable of recognizing hand movements, through a microcontroller, which will allow to implement future bioelectrical prostheses for people who have reduced, partial or total motor mobility. The proposed circuit measures the electrical signal generated from a movement of intramuscular fibers through surface electrodes and sends it to a differential amplifier stage. Then, this electrical signal is processed, which consists of steps of filtering and treatment of this signal. Finally, a microcontrolled circuit has been programmed with time domain treatment techniques for electromyography signals and calibrated with values obtained through tests of these techniques, identify the muscular movement of the sample studied. The system was first tested in mathematical software (MatLab) in order to evaluate the hit rate of an identification algorithm, followed by an adaptation of this algorithm in circuit simulation software (Proteus) to then apply the same methodology to the physical hardware, where it was possible to evaluate each method and calibrate appropriately the system to perform its task Further details can be found throughout the manuscript.