| 主权项 |
1. A lighting system, comprising:
a light source operatively coupled to a power source; a control unit operatively associated with the light source, and comprising:
a motion sensing device operable to provide a motion sensor output signal in response to a detection of motion;a photosensor configured to sense ambient light and to generate a first photosensor output signal indicative of a first ambient light level and a second photosensor output signal indicative of a second ambient light level; anda processing unit responsive to the motion sensor output signal, the first photosensor output signal, and the second photosensor output signal so as to control illumination of the light source by providing a first trigger signal based on the first photosensor output signal, a second trigger signal based on the second photosensor output signal, and a third trigger signal based on the motion sensor output signal;wherein the light source is responsive (a) to the first trigger signal to illuminate at a first brightness level, (b) to the second trigger signal to illuminate at a second brightness level, and (c) to the third trigger signal to illuminate at a third brightness level. |
