| 摘要 |
<p>PURPOSE:To make it possible to obtain easily and rapidly an accurate palmic synchronous signal from a biosignal by determining the period of differentiated biosignals, calculating a shift average in the range of one period based thereon and substract an averaged wave shape of the signal from the biosignal. CONSTITUTION:After smoothing differentiated treatment of a pulse signal wave x(t) is performed by means of a differentiation device 26, threshold value treatment of a periodically changing amt. and slope after the differentiation treatment is performed by means of a period-determining device 28 to determine a rough Tp. A shift average of the pulse wave signal wave x(t) in the range of one period Tp is obtd. by means of a shift average device 30 and a palmic synchronous signal wave y(t) is obtd. by subtracting the shift average-treated x(t) from an originally red-in pulse wave signal wave x(t) by means of a subtracting device 32. It is possible thereby to obtain accurately a wave shape of a palmic synchronous signal by a simple operation and to shorten the calculation time.</p> |
