Trabalho de Conclusão de Curso de Graduação
Estudo e desenvolvimento de uma prótese de mão mioelétrica
Fecha
2021-05-03Autor
Moreno, Ana Luiza Tupam Miguel
Institución
Resumen
Assistive technologies have emerged to ensure greater inclusion of people with disabilities in
society. In this context, the use of a limb prosthesis can mean a drastic improvement in the
quality of life of the amputee. However, the cost of a functional prosthesis for the upper limbs
is extremely high, not being accessible to a large part of the Brazilian population, and the State
does not provide for all cases the best option, only the most appropriate. To solve this problem,
it is possible to make a functional myoelectric prosthesis of low-cost using 3D printers and
components easily found in the Brazilian market. This work presents the design and
development of a low-cost myoelectric hand prosthesis for transradial amputations, defining all
the steps necessary for the manufacture. A sensing system with non-invasive silver electrodes
is used to capture the myoelectric signal responsible for controlling, through a microcontroller,
of the mechanical part of the prosthesis, built by a 3D printer, and servo motors responsible for
moving the fingers. In this work, a signal acquisition system was designed using low cost and
easy-to-find components in the Brazilian market, which is composed of pre-amplification
circuit and high-pass and low-pass filters, responsible for amplifying the signal and removing
possible noise.