Study on eliminating self-dithering interference of the system for non-contact detecting life parameters based on an adaptive algorithm / 生物医学工程学杂志
Journal of Biomedical Engineering
;
(6): 749-752, 2004.
Artigo
em Chinês
| WPRIM
| ID: wpr-342620
ABSTRACT
The non-contact life parameters detecting systems can detect many important life parameters such as heartbeat and breathing at certain distance. In practice, the self-dithering interference of the system is produced by some factors; it makes the signal-to-noise ratio (SNR) of the recorded signal lower. This paper is discussed an adaptive technology based on a variable step-size LMS algorithm, which is used to eliminate the self-dithering interference of the system and hence to raise the SNR of the detecting signal. A method to obtain the reference signal by vibration sensor is brought forward and the optimum parameters settings are discussed. The results show that the reference signal is an integral part of output signal of the vibration sensor and has a relationship with the setting direction of the sensor. The conclusion is that the method is effective and feasible; also the algorithm is well convergent.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Fisiologia
/
Valores de Referência
/
Respiração
/
Algoritmos
/
Processamento de Sinais Assistido por Computador
/
Software
/
Interpretação Estatística de Dados
/
Eletrofisiologia
/
Desenho de Equipamento
/
Frequência Cardíaca
Tipo de estudo:
Estudo prognóstico
Idioma:
Chinês
Revista:
Journal of Biomedical Engineering
Ano de publicação:
2004
Tipo de documento:
Artigo
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