Digital signal processing by virtual instrumentation of a MEMS magnetic field sensor for biomedical applications.
Sensors (Basel)
; 13(11): 15068-84, 2013 Nov 05.
Article
em En
| MEDLINE
| ID: mdl-24196434
We present a signal processing system with virtual instrumentation of a MEMS sensor to detect magnetic flux density for biomedical applications. This system consists of a magnetic field sensor, electronic components implemented on a printed circuit board (PCB), a data acquisition (DAQ) card, and a virtual instrument. It allows the development of a semi-portable prototype with the capacity to filter small electromagnetic interference signals through digital signal processing. The virtual instrument includes an algorithm to implement different configurations of infinite impulse response (IIR) filters. The PCB contains a precision instrumentation amplifier, a demodulator, a low-pass filter (LPF) and a buffer with operational amplifier. The proposed prototype is used for real-time non-invasive monitoring of magnetic flux density in the thoracic cage of rats. The response of the rat respiratory magnetogram displays a similar behavior as the rat electromyogram (EMG).
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Processamento de Sinais Assistido por Computador
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Tecnologia Biomédica
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Eletrônica Médica
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Magnetometria
Limite:
Animals
Idioma:
En
Revista:
Sensors (Basel)
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
México
País de publicação:
Suíça