| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an instrument for respiratory information measurement, which finds respiratory information such as a respiratory rate and a respiratory pattern of a subject by just analyzing measured pulse waves. SOLUTION: This respiratory information measuring method for obtaining the respiratory information, extracts a baseline fluctuation voltage waveform indicating a transition (the baseline fluctuation) of the minimum voltage in a period of a single beat of the pulse wave from the measured pulse waves. The respiratory pattern of the subject is found by using the fact that the fluctuation pattern of the baseline fluctuation voltage waveform synchronizes with the respiratory pattern. The respiratory rate of the subject is found by counting the number of times where the baseline fluctuation voltage waveform exceeds a predetermined threshold. COPYRIGHT: (C)2006,JPO&NCIPI
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