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handle: 10261/33967
[EN]The invention relates to a method of processing photopletismographic signals obtained from a person or animal and to an oximeter using said method. The inventive method comprises the following steps consisting in: a) receiving time-domain photopletismographic electrical signals; b) transforming said time signals into spectral signals; c) identifying a series of candidate peaks as the peak produced at the cardiac frequency; d) obtaining a series of parameters from said candidate peaks; and e) determining which peak is representative of the cardiac frequency from said parameters, step (d) being performed such as to obtain first, second and third parameters using calculations executed in parallel. According to the invention, the first parameter results from a function of harmonic probability in relation to the candidate peaks, the second parameter results from a function of preponderance, in terms of energy, in relation to the candidate peaks and the third parameter results from a function of historical analysis in relation to said candidate peaks.
[ES]El método comprende: a) Recibir unas señales eléctricas fotopletismográficas con dominio temporal, b) TransforQ mar dichas señales temporales en señales espectrales, e) Identificar una serie de picos candidatos a pico producido a la frecuencia Q cardiaca, d) Obtener una serie de parámetros a partir de dichos picos candidatos, y e) Determinar a partir de dichos parámetros cuál es el pico representativo de dicha frecuencia cardiaca, realizándose dicha etapa d) para obtener un primer, un segundo y un tercer O parámetros mediante unos cálculos ejecutados en paralelo, siendo: - dicho primer parámetro resultante de una función de probabilidad de armónicos de dichos picos candidatos,dicho segundo parámetro resultante de una función de preponderancia, en energía,de dichos picos candidatos, y - dicho tercer parámetro resultante de una función de análisis histórico de dichos picos candidatos.
Fecha de presentación internacional:12.06.2006.- Titulares:Consejo Superior de Investigaciones Científicas (CSIC).- Universidad Pontificia Comillas de Madrid.- Universidad de las Palmas de Gran Canaria.- Universidad Complutense de Madrid.
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