| 摘要 |
ADAPTIVE LIGHT SENSITIVE SWITCHING DEVICE Disclosed is an adaptive light sensitive switch (114) comprising a sensor (102) for detecting an ambient light level value, a processor (205), and a memory (209) for storing a program (233) configured to direct the processor to switch a light (110) on and off during a current night, the program comprising code for receiving a first parameter value specifying a first proportion and a second value specifying a second proportion, storing information based on the output of the sensor; determining a duration of at least one calibration night, estimating (414), based upon the duration of the calibration night a duration of the current night, switching (419) the light on at sunset for a first proportion of the current night, the light being switched on at a first predetermined illumination level, subsequently modifying the illumination level of the light to a second predetermined illumination level (824) for a second proportion of the current night, and subsequently further modifying the illumination level of the light to a third predetermined illumination level (829) for a remainder of the current night until at or near a sunrise time immediately following the current night. |
