| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that to realize control of illuminance in an ordinary office to keep illuminance on a desk 1 m high from the floor surface at 700 lux, setting an illumination photometer on the desk and feeding back information from the photometer to an illuminator to control illumination is necessary because illumination differs depending on a place in the office, but setting the illumination photometer constantly on the desk is unrealistic due to difficulty in power cabling, etc. SOLUTION: An illumination photometer with a radio function set on the ceiling in an office and a handy-type illumination photometer with a radio function are provided, and measurement is made simultaneously at both illumination photometers. Measurements at both illumination photometers are transmitted by radio waves to the illumination photometer with the radio function set on the ceiling to determine a correlation function from the measurements at both illumination photometers. The determined correlation function is stored in the illumination photometer with the radio function set on the ceiling. COPYRIGHT: (C)2010,JPO&INPIT
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