Presence determination device

Abstract

There is provided a presence determination device. The presence determination device determines whether or not a living body is present on a detection region, the presence determination device including: a flexible piezoelectric sensor sheet that is laid out in the detection region and outputs a detection signal corresponding to input vibration; a ballistocardiographic signal acquisition unit that extracts a ballistocardiographic signal corresponding to ballistocardioaction from the detection signal of the piezoelectric sensor sheet ; and an absence determination unit that executes an absence determination indicating that the living body is not present on the detection region, based on the ballistocardiographic signal. When a state where the ballistocardiographic signal is lower than an absence threshold value α lasts beyond an absence determination time, the absence determination unit executes the absence determination.

Dependencies are inferred from the claim text.