[Research on Detection Method with Wearable Respiration Device Based on the Theory of Bio-impedance].
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
; 33(6): 1103-9, 2016 Dec.
Article
em Zh
| MEDLINE
| ID: mdl-29714974
ABSTRACT
Considering the importance of the human respiratory signal detection and based on the Cole-Cole bio-impedance model,we developed a wearable device for detecting human respiratory signal.The device can be used to analyze the impedance characteristics of human body at different frequencies based on the bio-impedance theory.The device is also based on the method of proportion measurement to design a high signal to noise ratio(SNR)circuit to get human respiratory signal.In order to obtain the waveform of the respiratory signal and the value of the respiration rate,we used the techniques of discrete Fourier transform(DFT)and dynamic difference threshold peak detection.Experiments showed that this system was valid,and we could see that it could accurately detect the waveform of respiration and the detection accuracy rate of respiratory wave peak point detection results was over 98%.So it can meet the needs of the actual breath test.
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Base de dados:
MEDLINE
Assunto principal:
Impedância Elétrica
/
Taxa Respiratória
/
Dispositivos Eletrônicos Vestíveis
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
Limite:
Humans
Idioma:
Zh
Revista:
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Assunto da revista:
ENGENHARIA BIOMEDICA
Ano de publicação:
2016
Tipo de documento:
Article