Without being influenced in the direction of the user on the bedding, convenient and can determine the position of precisely the user to provide a novel attitude determination device and the attitude determination method. Plurality of pressure detecting section arranged in a matrix on the human body support surface (16) of the bedding (12) with (100) sensitive to calculate the sensitivity during pressurization heart of the pressure detector on the basis of the output value of the pressure detecting portion The determination and pressure center calculation means (S3), judgment area setting means for setting a judgment area around the sensitive pressure center, which is calculated (S5), an attitude based on the distribution of the output values of the pressure sensing portion in the determination area It is provided and the attitude determination means (S9) to be.寝具上での使用者の方向に影響されることなく、簡便且つ精度よく使用者の姿勢を判定することができる、新規な姿勢判定装置および姿勢判定方法を提供する。 寝具(12)の人体支持面(16)にマトリックス状に配設された複数の圧力検出部(100)を用い、圧力検出部の出力値に基づいて圧力検出部の感圧中心を算出する感圧中心算出手段(S3)と、算出された感圧中心の周囲に判定エリアを設定する判定エリア設定手段(S5)と、判定エリア内における圧力検出部の出力値の分布状況に基づき姿勢を判定する姿勢判定手段(S9)とを設けた。
