Device and method for the detection of the pulse wave selection pressure sensor of a plurality of pressure sensors.

摘要

A device for detecting the pulse wave, comprising: an array (19) of sensors having a plurality of pressure sensors arranged on a measurement surface; a portion (18) for pressing said sensor array laid across an artery of a living body; a portion (20) of selection of sensor signal to choose a pressure signal among pressure signals from said plurality of pressure sensors; and a portion (22) filter having a frequency variable cut, corresponding to an instruction, wherein said portion short filter a signal component having a frequency of at least one prescribed value included in the signal pressure selected by said selection portion signal corresponding to said cutoff frequency sensor; further comprising said device for detecting pulse wave: a part (23) analog / digital conversion for converting, into a digital signal, an analog signal let through by said filter portion and outputted therefrom; a portion (11) of pressure sensor specification to specify a pressure sensor for detecting pulse wave from said plurality of pressure sensors; a portion (11) for detecting the pulse wave detecting a pulse wave from said artery based on the corresponding to the pressure signal digital signal from the pressure sensor specified by said portion specifying pressure sensor ; and a portion (11) control the filter to provide the instruction to vary said cutoff frequency in said filter portion; wherein said control part of the filter switches said cutoff frequency from a first value in a first situation in which a plurality of pressure signals obtained respectively from said plurality of pressure sensors are switched on and issued as output by said selection portion sensor signal, to specify said pressure sensor for detecting the pulse wave, to a second value in a second situation wherein the pulse wave is detected by said part of detecting pulse wave.