A system and method involving lighting fixtures, a control network, a controller and other devices such as light sensors, input devices and network adapters for coordinating precise brightness and color schedules among the lighting fixtures while maintaining a high color reliability including provis
A system and method involving lighting fixtures, a control network, a controller and other devices such as light sensors, input devices and network adapters for coordinating precise brightness and color schedules among the lighting fixtures while maintaining a high color reliability including provisions for managing a plurality of lighting fixtures. The lighting fixtures contain lighting elements selected such that when controlled properly, operating along a daytime locus, the resultant light output closely resembles sunlight on a cloudless day in spectral characteristics, and wherein the total flux of blue light can be adjusted from a relative level of 1-100% the maximum blue flux of the lighting fixture by controlling individual lighting elements.
대표청구항▼
1. A system to control a plurality of channels of lighting elements to generate artificial sunlight with spectral characteristics that resemble natural sunlight, the system comprising: a controller communicatively coupled to receive input signals, to receive signals from a number of light sensors, a
1. A system to control a plurality of channels of lighting elements to generate artificial sunlight with spectral characteristics that resemble natural sunlight, the system comprising: a controller communicatively coupled to receive input signals, to receive signals from a number of light sensors, and to control the plurality of channels of lighting elements, the controller operable to:sequentially individually activate each of the channels of lighting elements,receive signals from the light sensors, the respective signals representative of detected light for each of the channels of lighting elements;automatically create a calibrated setpoint for each of the channels of lighting elements based at least in part on the respective signals generated for the respective channel of lighting elements by the light sensors;automatically create respective drive signals for each of the channels of lighting elements based at least in part on the calibrated setpoint for the respective channel of lighting element and based at least in part on the received input signals; andautomatically provide the respective drive signals to the channels of lighting elements to automatically vary a brightness level and a color level of the respective channels of lighting elements to produce a composite light along at least a portion of a daylight locus. 2. The system of claim 1 wherein the input signals are representative of at least one user-selected input. 3. The system of claim 2 wherein the user-selected input indicates a current activity of the user, and the respective drive signals automatically vary the brightness level and the color level for the respective channels of lighting element to produce the composite light along at least a portion of the daylight locus that corresponds to the current activity of the user. 4. The system of claim 2 wherein the user-selected input indicates a desired sunlight scenario, the desired sunlight scenario which is one of cloudless, partially cloudy, overcast, foggy, rainy, and snowy, and the respective drive signals automatically vary the brightness level and the color level for the respective channels of lighting element to produce the composite light along at least a portion of the daylight locus that corresponds to the desired sunlight scenario. 5. The system of claim 2 wherein the user-selected input indicates a desired one of at least two different color-time profiles, each of the at least two different color-time profiles specify values for one or more of brightness and color temperature versus time, and the respective drive signals automatically vary the brightness level and the color level for the respective channels of lighting element to produce the composite light along at least a portion of the daylight locus that corresponds to the values specified by the desired one of the at least two different color-time profiles for a current time. 6. The system of claim 2 wherein the user-selected input indicates a geographic location, and the respective drive signals automatically vary the brightness level and the color level for the respective channels of lighting element to produce the composite light along at least a portion of the daylight locus that corresponds to lighting conditions that exist at the geographic location. 7. The system of claim 1 wherein the input signals are representative of at least one defined schedule. 8. The system of claim 1 wherein the plurality of channels of lighting elements comprise a plurality of arrays combined on a common digital bus, each of the plurality of arrays comprising at least three of the channels of lighting elements and at least two of the at least two light sensors grouped within a common spatial region, the controller which provides via the common digital bus respective drive signals to the at least three channels of lighting element channel of each of the plurality of arrays based at least in part on the respective signals representative of the composite light detected by the at least two light sensors of such array to form a plurality of closed feedback loops. 9. The system of claim 1 wherein the plurality of channels of lighting elements are selectively operable to generate broad spectrum white light. 10. The system of claim 1 wherein the controller controls a total flux of blue light from a relative level of 1% to 100% of a maximum blue light flux within white light produced by the lighting elements. 11. The system of claim 1 wherein the plurality of channels of lighting elements are selectively operable to generate broad spectrum white light of color temperatures higher than 3000K and lower than 5000k. 12. The system of claim 1 wherein the plurality of channels of lighting elements are selectively operable to generate broad spectrum white light of color temperatures higher than 1800K and lower than 6500K. 13. A system to control a plurality of channels of lighting elements to generate artificial sunlight with spectral characteristics that resemble natural sunlight, the system comprising: a controller communicatively coupled to receive signals from a number of light sensors representative of at least one characteristic of a composite light emitted by the lighting elements, and communicatively coupled to control the channels of lighting elements, the controller operable to:receive a user-selected input that specifies an adjustment for a time-color profile that specifies values of one or more of brightness and color temperature versus time;activate the channels of the lighting elements to generate a composite light;activate a color match algorithm to automatically create respective drive signals for the channels of lighting elements based at least in part on the time-color profile and the respective signals representative of the composite light received from the light sensors; andautomatically provide the respective drive signals to the channels of lighting elements to automatically vary a brightness level and color level of respective ones of the channels of lighting elements to produce the composite light along at least a portion of a daylight locus that corresponds to values specified by the time-color profile for a current time. 14. The system of claim 13 wherein the controller is operable further to: cause a presentation of a user interface to receive the user-selected input that specifies the adjustment for the time-color profile. 15. The system of claim 13 wherein the controller causes a presentation of a user interface that represents time on a first axis, available values for one or more of brightness and color temperature on a second axis that is orthogonal to the first axis, and a plot of the values for one or more of brightness and color temperature versus time. 16. The system of claim 13 wherein the respective drive signals are based at least in part on the user-selected input and automatically vary the brightness level and the color level for respective channels of lighting elements to produce the composite light along at least a portion of the daylight locus that corresponds to the user-selected input. 17. The system of claim 16 wherein the user-selected input indicates a current activity of the user, and the respective drive signals automatically vary the brightness level and the color level for respective channels of lighting elements to produce the composite light along at least a portion of the daylight locus that corresponds to the current activity of the user. 18. The system of claim 16 wherein the user-selected input indicates a desired sunlight scenario, the desired sunlight scenario which is one of cloudless, partially cloudy, overcast, foggy, rainy, and snowy, and the respective drive signals automatically vary the brightness level and the color level for respective channels of lighting elements to produce the composite light along at least a portion of the daylight locus that corresponds to the desired sunlight scenario. 19. The system of claim 16 wherein the user-selected input indicates a desired one of at least two different color-time profiles, each of the at least two different color-time profiles specify values for one or more of brightness and color temperature versus time, and the respective drive signals automatically vary the brightness level and the color level for respective channels of lighting elements to produce the composite light along at least a portion of the daylight locus that corresponds to the values specified by the desired one of the at least two different color-time profiles for a current time. 20. The system of claim 16 wherein the user-selected input indicates a geographic location, and the respective drive signals automatically vary the brightness level and the color level for respective channels of lighting elements to produce the composite light along at least a portion of the daylight locus that corresponds to lighting conditions that exist at the geographic location. 21. The system of claim 13 wherein the plurality of lighting element channels comprise a plurality of arrays combined on a common digital bus, each of the plurality of arrays comprising at least three of the plurality of lighting element channels and at least two of the light sensors grouped within a common spatial region, the controller which provides via the common digital bus respective drive signals to the at least three channels of lighting elements of each of the plurality of arrays based at least in part on the respective signals representative of the composite light detected by the light sensors of such array to form a plurality of closed feedback loops. 22. The system of claim 13 wherein the channels of lighting elements are selectively operable to generate broad spectrum white light. 23. The system of claim 13 wherein the channels of lighting elements are selectively operable to generate broad spectrum white light of color temperatures between at or greater than 3000K and at or less than 5000K. 24. The system of claim 23 wherein the controller controls a total flux of blue light from a relative level of 1% to 100% of a maximum blue light flux within the broad spectrum white light produced by the lighting elements.
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