| 摘要 |
PROBLEM TO BE SOLVED: To quickly inspect a sensor for detection of opening and closing of an elevator door.SOLUTION: A plurality of light projectors 311 are provided to one 15L of doors, and a plurality of light receivers 321 forming pairs with the opposite light projectors are provided to the other 15R of the doors. A door control device 210 determines the presence of abnormal conditions on the basis of a light receiving amount of the light receiver for each of the plurality of pairs, forcibly opens and closes the doors after the passage of a predetermined time after the abnormal conditions are detected, selects the pair detecting the abnormal condition as an inspection object pair if the abnormal conditions continue even when the doors are forcibly opened and closed, and inspects the conditions of the inspection target pair by using an inspection target light projector and an inspection target light receiver constituting the inspection target pair and at least one of another light projector positioned within a predetermined range of the inspection target light projector or another light receiver positioned within a predetermined range of the inspection target light receiver, in a predetermined combination. |
