PROBLEM TO BE SOLVED: To provide a sleeping posture determination device and sleeping posture determination method capable of determining whether the state of a person is a left side lying position or a right side lying position by non-contact when the person is lying in a lateral position state.SOLUTION: A sleeping posture determination method includes: a step of detecting a component in parallel with a floor surface and also in a direction vertical to a body height direction within the load of a person when the person is in a lying position state as a first electric signal a step S1 of determining that the person is in a side lying position state when the amplitude of the first electric signal is equal to or more than a first predetermined value and determining that the person is in a supine position state or in a prone position state when the amplitude is less than the first predetermined value a step of detecting the inspiration state and expiration state of the person as a respiration correspondence electric signal and a step S3 of determining whether the person is in a left side lying position state or in a right side lying position state on the basis of a phase difference between the first electric signal and the respiration correspondence electric signal when it is determined that the person is in a side lying position state.COPYRIGHT: (C)2014,JPO&INPIT【課題】人が側臥位状態にあるときに、その状態が左側臥位であるか右側臥位であるかを非接触で判定できる寝姿勢判定装置及び寝姿勢判定方法を提供する。【解決手段】寝姿勢判定方法は、人が臥位状態にあるときに人の荷重のうち床面に平行且つ身長方向に垂直な方向の成分を第1電気信号として検出するステップと、第1電気信号の振幅が第1所定値以上のときに人が側臥位状態にあると判定し、第1所定値未満のときに人が仰臥位状態又は腹臥位状態にあると判定するステップS1と、人の吸気状態と呼気状態とを呼吸対応電気信号として検出するステップと、人が側臥位状態にあると判定されたときに、第1電気信号と呼吸対応電気信号との位相差に基づいて人が左側臥位状態にあるか右側臥位状態にあるかを判定するステップS3とを含む。【選択図】図11
