Desenvolvimento de um protótipo de aquisitor portátil de sinal mioelétrico / Development of a prototype of data logger to myoelectric signal

AUTOR(ES)

Alexandre Capucho

DATA DE PUBLICAÇÃO

2005

RESUMO

Electromyography is the study of the muscular function by the acquisition of the electric sign that the muscles produce. Most of the equipments for reception of the sEMG is bench models, in other words, they have a size that disables that the patient can carry it during the period of acquisition of the sign and it is also necessary that a connected computer to the acquisition system, because is here that the data are stored. In this work is developed a system that can be taken to field without the need of also taking the computer for the acquisition of the data. To control every acquisition process and digitization of the sign mioelectric we used the microcontroller AduC831 (Analog Devices) with standard core Intel 8051 of 8 bits and analogical/digital converters of 12 bits with a sampling of 4000 KSPS, the sign mioelectric is amplified and formatted so that it is inside of the frequency patterns and voltage wanted and the acquired data will be stored in a card of memory SmartMedia (Samsung) with autonomy for one hour of acquisition. Bench tests, using a functions generator, was realized proving the accuracy of the acquisition system and when used in alive was shown efficient in the reception of the sign mioelectric

ASSUNTO(S)

aquisição de sinais electromyography microcontroller microcontrolador eletromiografia data acquisition

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