| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an illumination control device capable of selecting a type of luminaire in a short time. <P>SOLUTION: A storage part 2, wherein a light modulation data table showing the relation of a light modulation rate and a light modulation signal changing a duty ratio of a PWM signal is stored according to an illumination load in advance, outputs the data of the light modulation data table to a control part 4. A brightness sensing part 3 outputs voltage according to an optical output of an illumination load to the control part 4. The control part 4 outputs light modulation signals of two different preset duty ratios, reads the outputs of the brightness sensing part at the two points, and selects a type of luminaire according to the value. A light modulation signal output part 5 is an amplifier amplifying the light modulation signal from the control part 4 to output to the luminaire 7. <P>COPYRIGHT: (C)2004,JPO</p> |
