As for the bed device, multiplying the factor of each every period in totaling expedient, and the totaling result which total the frequency which it decides that 1st decision expedient and the operational result which decide whether or not 1st operational expedient and the balance station change quantity or the load change quantity which calculate the balance station change quantity or the load change quantity on the basis of load measurement expedient and the load signal which form the load signal the operational result is above 1st threshold, are above 1st threshold the 2nd operational expedient which adds those the operational result due to 2nd operational expedient and, specifiedWhether or not, or it is above 2nd threshold, on the basis of it decides awakening of the user or sleep state body motion or the 2nd decision expedient which decides repose state and, it has. Because of this, you sleep and you watch the movement of the user making use of the load information of the floor, can inspect the awakening state and body dynamic state of the bed user at high detection precision.寝台装置は、荷重信号を生成する荷重計測手段と、荷重信号に基づいて重心位置変化量又は荷重変化量を演算する第1の演算手段と、重心位置変化量又は荷重変化量の演算結果が第1の閾値以上であるか否かを判定する第1の判定手段と、演算結果が第1の閾値以上であると判定した回数を集計する集計手段と、集計結果に各期間ごとの係数を乗じてそれらを加算する第2の演算手段と、第2の演算手段による演算結果が所定の第2の閾値以上であるか否かに基づいて利用者の覚醒若しくは睡眠状態を判定するか、又は体動若しくは安静状態を判定する第2の判定手段と、を備えている。これにより、寝床部の荷重情報を利用して利用者の動きを監視し、高い検出精度でベッド利用者の覚醒状態及び体動状態を検知することができる。
