DEVELOPMENT OF A DIGITAL FREQUENCY METER FOR SIGNAL ANALYSIS ON A RESPIRATORY PHYSIOTHERAPY EQUIPMENT

  • GUILHERME CARVALHO DA SILVA Universidade Federal do Ceará
  • RAISSA MORAES DE CASTRO Universidade Federal do Ceará
  • MARCUS DAVI DO NASCIMENTO FORTE Universidade Federal do Ceará
  • FABRÍCIO GONZALEZ NOGUEIRA Universidade Federal do Ceará
  • BISMARK CLAUDE TORRICO Universidade Federal do Ceará
  • DENISE MARIA SÁ MACHADO DINIZ Universidade Estácio do Ceará
  • MYLENA XIMENES AGUIAR Universidade Estácio do Ceará
  • NATHIARA ELLEN DOS SANTOS nathiara_fonteles@hotmail.com
  • THIAGO DINIZ LOBO Universidade Federal do Ceará
Keywords: Filtro, OOAF, TRF, Sensor de efeito hall linear, Técnicas de fisioterapia respiratória

Abstract

This work presents preliminary results of a digital frequency meter that has been designed to measure the frequency of oscillatory vibrations in respiratory physiotherapy devices. Maintain a frequency around 13Hz is important to keep an efficient treatment. Therefore, the proposed circuits and systems are intended to give a visual feedback to the patient with a suggestion of the optimal blow strength. A Linear Hall-Efect Sensor was coupled to the physiotherapy device and the output signal is conditioned through a set of lters. The Fast Fourier Transform of the conditioned signal is used in order to extract frequency domain information to be displayed in real-time to patients.

Published
2020-10-29
Section
Articles