PRESENT-ON-BED DETERMINATION APPARATUS AND SLEEP MEASUREMENT APPARATUS

摘要

PROBLEM TO BE SOLVED: To enable to appropriately determine whether or not a human subject is present on a bottom bedding.SOLUTION: A present-on-bed determination apparatus 1 includes: a sensor unit 2 usable with a bottom bedding M and configured to measure biological displacement of a human subject on the bottom bedding M so as to output a measurement signal showing a measurement result; a first signal processing unit 7 configured to amplify the measurement signal with a first gain G1 so as to output a first output signal; a first AD conversion unit 90 configured to output a plurality of first level values obtained by AD conversion of the first output signal; and a determination unit 94 configured to determine whether or not the human subject is present on the bottom bedding in accordance with a dispersion indicator &sgr; that indicates dispersion degree of the plurality of the first level values.