PROBLEM TO BE SOLVED: To provide a bed sensor system in which determination omission from the initial stage of the system starting to presence of bed-leaving is few and determination accuracy of presence of the bed-leaving after starting the system can be easily improved.SOLUTION: The bed sensor system 1 includes: a sheet-like sensor 2 disposed on bedding 9 of a care receiver P and having a sensor film 20 made of an elastomer a controller 3 including a memory unit 30 storing reference data and threshold data and a calculation unit 31 to compare calculation data based on body pressure distribution of the care receiver P with the reference data to determine the posture of the care receiver P and to compare the time change of calculation data with threshold data to determine whether the care receiver P leaves the bed or not to output notice indication when the bed-leaving is determined a notice device 4 to transmit a bed-leaving notice to a care giver and an input device 5 into which error determination information is input from the care giver. In the controller 3, determination accuracy of the presence of bed-leaving is improved by correcting the threshold data on the basis of the error determination information.COPYRIGHT: (C)2012,JPO&INPIT【課題】 システム立ち上げ初期から離床有りの判別漏れが少なく、かつ、システム立ち上げ後に離床の有無の判別精度を向上させやすい離床センサシステムを提供する。【解決手段】 離床センサシステム1は、被介護者Pの寝具9に配置されエラストマー製のセンサ膜20を有するシート状のセンサ2と、基準データとしきい値データとが格納された記憶部30と、被介護者Pの体圧分布に基づいた演算データと基準データとを比較して被介護者Pの姿勢を判別すると共に、演算データの経時変化としきい値データとを比較して被介護者Pの離床の有無を判別し、離床が有ると判別した場合に通報指示を出力する演算部31と、を有する制御装置3と、介護者に離床通報を発信する通報装置4と、介護者から誤判別情報が入力される入力装置5と、を備える。制御装置3は、誤判別情報に基づいてしきい値データを補正することにより、離床の有無の判別精度を向上させる。【選択図】 図3
