APPARATUS, METHOD, AND PROGRAM FOR MONITORING AND DETERMINING DEVICE STATE

PROBLEM TO BE SOLVED: To provide a technique for monitoring and determining device state which achieves little resource consumption and excellent tracking performance.SOLUTION: An apparatus for monitoring and determining device state comprises: an environment information acquisition unit which acquires environment information from each sensor; an environment information change detection unit which detects change in the acquired environment information compared to the past environment information of each sensor that is acquired by referring to an environment information storage unit, outputs the acquired environment information when change is detected, and stores the acquired environment information in the environment information storage unit; an environment information reception unit which receives the acquired environment information; and a determination unit which provisionally determines a device state on the basis of the acquired environment information according to priority corresponding to the sensor or environment information that is acquired by referring to a priority information storage unit, detects change in the device state provisionally determined compared to the past device state acquired by referring to a device state storage unit, stores the newly determined device state in the device state storage unit, and outputs the newly determined device state.