| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique with which a state of a person is accurately recognized. <P>SOLUTION: The time series waveforms of frequencies are obtained from time series waveforms of biological signals sampled from an upper body of a person, and further time series waveforms of frequency gradients are obtained. The gradient time series waveforms are frequency-analyzed, and in the relation of logarithmic power spectral density and a logarithmic frequency, a branching point of a regression line is captured, and a state is determined using the appearing position of the branching point and the shape of the regression line, etc. Since the position of the branching point and the shape of the regression line, etc., can be patterned according to the state of the person, the state is easily and accurately determined. <P>COPYRIGHT: (C)2012,JPO&INPIT |
