PROBLEM TO BE SOLVED: To provide a body motion detecting device capable of highly accurately detecting body motion without disturbing sleep and achieving it at a low cost.SOLUTION: A body motion detecting device 100 includes: a load sensor 11 disposed on a back face of bedding 2 and detecting a change in load a body motion value arithmetic part 12 that calculates a body motion value representing the change in the load on the basis of the change in the load for every zone with a cycle shorter than a breathing cycle of an animal 1 on the bedding 2 and a body motion determining part 13, when the body motion value is larger than a preset determination threshold, determining that there is the body motion of the animal 1.COPYRIGHT: (C)2014,JPO&INPIT【課題】精度良く、且つ、睡眠を害さずに体動を検出することが可能で、低コストで実現できる体動検出装置を提供する。【解決手段】このような体動検出装置100は、寝具2の裏面に配設され、荷重の変化を検出する荷重センサ11と、寝具2上の動物1の呼吸の周期よりも短い周期の区間毎に荷重の変化に基づいて、当該荷重の変化を示す体動値を演算する体動値演算部12と、体動値が予め設定された判定閾値より大きい場合に動物1の体動があったと判定する体動判定部13と、を備える。【選択図】図1
