Maintenance management system of tunnel lighting

摘要

PROBLEM TO BE SOLVED: To accurately determine the illuminance deterioration of an illumination lamp by stably measuring the illuminance of the illumination lamp in a position where it is difficult to receive light from the outside.;SOLUTION: A device for determining deterioration of the illumination lamp includes: the illumination lamp 20; a reflection plate 40 which reflects the light output by the illumination lamp 20; an illuminance sensor 50 attached to the reflection plate 40; an illuminance abnormality detection circuit 61 which detects the illuminance abnormality of the illumination lamp 20 when the measured illuminance measured by the illuminance sensor 50 is compared with the established illuminance established and stored, and the measured illuminance becomes equal to or lower than the established illuminance; and a notifying means which provides notification of the illuminance abnormality of the illumination lamp in accordance with detection of the illuminance abnormality.;COPYRIGHT: (C)2012,JPO&INPIT