PROBLEM TO BE SOLVED: To provide a biosignal processing apparatus which can properly report troubles or the like of a sensor.SOLUTION: The biosignal processing apparatus includes a sensor section 2, a signal processing section 7, an AD converting section 8 and a judging section 90. In this case, the sensor section 2 can be used together with a mattress, and outputs a measurement signal showing the measurement result by measuring the living body displacement of a subject on the mattress. The signal processing section 7 outputs each output signal by amplifying the measurement signal by a plurality of different gains. The AD converting section 8 respectively outputs level values which have been obtained by AD-converting each output signal. The judging section 90 judges that the sensor section 2 is abnormal when an unevenness scale indicating the degree of unevenness in the level value corresponding to the output signal which has been amplified by the minimum gain from among respective level values is at or lower than a predetermined value.COPYRIGHT: (C)2014,JPO&INPIT【課題】センサの故障等を適切に報知可能な生体信号処理装置を提供する。【解決手段】敷寝具と共に使用可能であり、敷寝具上における被験者の生体変位を測定し、測定結果を示す測定信号を出力するセンサ部2と、測定信号を複数の異なるゲインで増幅して各出力信号を出力する信号処理部7と、各出力信号をAD変換して得たレベル値を各々出力するAD変換部8と、各レベル値のうち最小のゲインで増幅された出力信号に対応するレベル値のばらつきの程度を示すばらつき尺度が所定値以下の場合に、センサ部2が異常であると判定する判定部90とを備える。【選択図】図2
