A monitoring device (1) is a moving bed detecting section (11) for detecting movement of a subject (P), a biological signal detecting section (21) for detecting a living body signal of the subject (P), and a predetermined bed area based on the information obtained from the moving body detecting section (11) An action discriminating portion (14) for discriminating the presence \/ absence of a subject (P) in 15a and a biological signal discriminating section (25) for determining whether or not the subject signal (P) is present in accordance with the information obtained from the biological signal detecting section (21).The monitoring apparatus (1) determines the presence or absence of the subject (P) in the bed area (15a) based on both the discrimination by the action discriminating unit (14) and the discrimination by the biometric signal discriminating unit (25).監視装置(1)は被検者(P)の動きを検出するための動体検出部(11)と、被検者(P)の生体信号を検出するための生体信号検出部(21)と、動体検出部(11)から得た情報に基づき予め定めたベッドエリア(15a)における被検者(P)の有無を判別する行動判別部(14)と、生体信号検出部(21)から得た情報に基づき被検者(P)の生体信号の有無を判別する生体信号判別部(25)と、を備える。監視装置(1)は行動判別部(14)による判別と、生体信号判別部(25)による判別との双方の情報に基づきベッドエリア(15a)における被検者(P)の有無を確定する。
