| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately extract and detect the pulsation components of a person to be measured out of measured signals on which noise components such as artifact components are superimposed. <P>SOLUTION: A device 100 for measuring a biological signal is provided which is characterized by including: an irradiation part 10 which irradiates a living tissue of the person to be measured with light having two different wavelengths; a light receiving part 20 for receiving the light having each of the wavelengths which is emitted from the irradiation part 10 and is transmitted through or reflected on the living tissue 500, and converting the light to an electric signal according to the intensity of the light each received; Hilbert-transformation parts 34, 35 which allow the electric signal to undergo Hilbert-transformation, and to generate envelope data for constituting an envelope curve; and an oxygen saturation calculation part 40 which calculates an extinction degree rate on the basis of the generated envelope data so as to calculate a blood oxygen saturation level of an artery in the living tissue 500 on the basis of the extinction degree rate. <P>COPYRIGHT: (C)2012,JPO&INPIT |
