Lighting fixture and lighting system for automatically adjusting color temperature

A lighting system for automatically adjusting a color temperature, comprising light emitting units, a drive device, and a data acquisition and analysis unit;

• wherein
• at least two light emitting units are arranged;
• the data acquisition and analysis unit feeds an analysis result back to the drive device;
• the drive device drives the at least two light emitting units, respectively, wherein the drive device comprises a processor and a driver circuit;
• and
• the at least two light emitting units generate light sources with different color temperatures to compensate for each other,
• wherein the data acquisition and analysis unit comprises a light detection unit, a visibility detection unit, an infrared movement signal detection unit, a human body temperature measurement unit, and an environment measurement unit;
• wherein the light detection unit is configured for obtaining a light intensity;
• the infrared movement signal detection unit detects a presence or a movement of a human body and generates an infrared movement signal;
• the visibility detection unit is configured for obtaining visibility information;
• the human body temperature measurement unit is configured for obtaining human body temperature data;
• and
• the environment measurement unit is configured for obtaining environmental temperature data, and
• wherein the processor is configured for:
• obtaining the light intensity from the light detection unit and the infrared movement signal from the infrared movement signal detection unit to determine whether to start lighting;
• obtaining visibility information from the visibility detection unit and constructing a current visibility model according to the visibility information to obtain a visibility, and determining a first color temperature parameter according to the visibility;
• obtaining human body temperature data from the human body temperature measurement unit and adjusting the first color temperature parameter according to the human body temperature data to obtain a second color temperature parameter;
• and
• obtaining environment temperature data from the environmental measurement unit and adjusting the second color temperature parameter according to the environment temperature data to obtain a final color temperature parameter, and
• controlling the driver circuit to adjust the light sources based on the final color temperature parameter.