PROBLEM TO BE SOLVED: To provide a bed occupancy state detection method by which a detection accuracy of movements of a subject for raising his or her upper body can be improved.SOLUTION: The bed occupancy state detection method using a device 10 includes: a load detection process in which the load on the left side of the head and the right side of the head of a bed 31 is detected respectively as a left head side load and a right head side load with a predetermined period a first determination process in which it is determined whether a predetermined first determination formula (1) is satisfied or not a second determination process in which it is determined whether a predetermined second A determination formula (2A) and a second B determination formula (2B) are both satisfied or not and an annunciation process in which a warning is issued when the first determination formula (1) is satisfied and the second A determination formula (2A) and the second B determination formula (2B) are both satisfied.COPYRIGHT: (C)2011,JPO&INPIT【課題】被験者の背上げ動作の検出精度を向上させることができる寝床の在床状況検出方法を提供する。【解決手段】装置10は、寝床31の左頭側部及び右頭側部に掛かる荷重をそれぞれ左頭側荷重及び右頭側荷重として所定の検出周期で検出する荷重検出工程と、所定の第1判定式(1)を満たしているか否かを判定する第1判定工程と、所定の第2A判定式(2A)及び第2B判定式(2B)を両方満たしているか否かを判定する第2判定工程と、第1判定式(1)を満たし且つ第2A判定式(2A)及び第2B判定式(2B)を両方満たしている場合、警報を報知する報知工程と、を含む。【選択図】図1
