| 摘要 |
PROBLEM TO BE SOLVED: To provide a system which controls an illumination equipment to inexpensively detect presence of human without incorrect operation even if detection by a motion sensor can not be made due to little movement of the human.SOLUTION: The system has: a driving part of the illumination equipment which turns on or off the illumination equipment; one or a plurality of the motion sensors to detect a motion of the human in a region of illumination; one or a plurality of acoustic sensors to detect sound generated in a region of illumination; and a control part to control the driving part of the illumination equipment based on an output of the motion sensor and the acoustic sensor. The control part transmits light-off command to the driving part of the illumination equipment when neither the motion sensor nor the acoustic sensor outputs a detected signal within a prescribed time. |
