| 摘要 |
PROBLEM TO BE SOLVED: To provide a biological information processor for extracting a pulse wave having little noise by attenuating body motion noise which fluctuates in accordance with various motion states of a subject.SOLUTION: The biological information processor includes a plurality of filters which detect a biological signal including a pulse wave component and a body motion noise component, detect a body motion signal correlating to the body motion noise component, and separate the pulse wave component and the body motion noise component included in the biological signal on the basis of the body motion signal, and which have a different filter characteristic; calculates a correlation coefficient between the body motion signal and at least one of the pulse wave component and the body motion noise component in each filter; and determines the pulse wave component separated by using any filter as a pulse wave signal on the basis of the correlation coefficient. According to the biological information processor, a pulse wave component obtained by sufficiently attenuating a noise component can be selected from pulse wave components extracted by the plurality of filters. |
