System and methods for generating customized color temperature dimming curves for lighting devices
One or more devices of a lighting control system may be configured to generate a custom CCT dimming curve for a lighting load. The device may receive, via a user selection, a high-end correlated color temperature (CCT) value, where the high-end CCT value is associated with a high-end intensity level of the lighting load. The device may receive, via a user selection, a CCT dimming curve from a plurality of selectable curve shapes. The device may determine a bend value and a CCT range based on the selected curve shape. The device may determine a low-end CCT value based on the high-end CCT value and the CCT range, where the low-end CCT value is associated with a low-end intensity level of the lighting load. The device may determine the custom CCT dimming curve based on the high-end CCT value, the low-end CCT value, and the bend value.
1. A method for creating a correlated color temperature dimming (CCT-dimming) curve for a lighting load using at least one processor, the method comprising:
determining, via the at least one processor, CCT-dimming curve data, wherein the CCT-dimming curve data comprises any combination of a high-end CCT value, a low-end CCT value, a CCT range, and a bend value; and
transmitting, via a transmitter, the CCT-dimming curve data to a lighting device;
storing the CCT-dimming curve data in a memory of the lighting device;
receiving, via a receiver, a command to adjust an intensity level of the lighting load to a commanded intensity level; and
controlling, via the at least one processor, a CCT value of the lighting load based on the CCT-dimming curve data and the commanded intensity level; and
wherein the high-end CCT value is associated with a high-end intensity level of the lighting load, the low-end CCT value is associated with a low-end intensity level of the lighting load, the CCT range defines a difference between the high-end CCT value and the low-end CCT value, and the bend value defines an amount of curvature in a line defining the CCT values across a dimming range between the high-end CCT value and the low-end CCT value.
2. The method of claim 1 , further comprising:
generating, via the at least one processor, a CCT-dimming curve using the CCT-dimming curve data.
3. The method of claim 1 , wherein the CCT-dimming curve data comprises the high-end CCT value, the low-end CCT value, and the bend.
4. The method of claim 1 , wherein the CCT-dimming curve data comprises the high-end CCT value, the CCT range, and the bend value.
5. The method of claim 1 , wherein the CCT-dimming curve data comprises the low-end CCT value, the CCT range, and the bend.
6. The method of claim 1 , further comprising:
retrieving, via the at least one processor, the high-end CCT value, the low-end CCT value, and the bend value from the memory; and
determining, via the at least one processor, the CCT value for the commanded intensity level based on the high-end CCT value, the low-end CCT value, and the bend value.
7. The method of claim 6 , wherein the CCT value for the commanded intensity level is determined based on:
CCT
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d
]
=
(
CCT
HE
-
CCT
LE
)
·
(
1
+
B
)
·
d
B
+
d
+
CCT
LE
,
where CCT[d] is the CCT value for the commanded intensity level, CCT HE is the high-end CCT value, CCT LE is the low-end CCT value, B is the bend value, and d is the commanded intensity level.
8. The method of claim 7 , further comprising:
receiving an updated high-end CCT value;
calculating, via the at least one processor, an updated low-end CCT value based on the updated high-end CCT value and the CCT range; and
storing the updated high-end CCT value and the updated low-end CCT value in the memory.
9. The method of claim 1 , further comprising:
receiving, via a user selection, a curve shape from a plurality of selectable curve shapes; and
determining, via the at least one processor, the bend value and the CCT range based on the selected curve shape.
10. The method of claim 9 , wherein the plurality of selectable curve shapes comprises a warm CCT-dimming curve shape, a daylight CCT-dimming curve shape, and a cool CCT dimming curve shape.
11. The method of claim 9 , further comprising:
receiving, via a user selection, the high-end CCT value, wherein the high-end CCT value is associated with a high-end intensity level of the lighting load, wherein the CCT-dimming curve data comprises the high-end CCT value, the CCT range, and the bend value.
12. The method of claim 11 , further comprising:
determining, via the at least one processor, the low-end CCT value based on the high-end CCT value and the range; and
storing the high-end CCT value, the low-end CCT value and the bend value in the memory of the lighting device.
13. The method of claim 9 , further comprising:
display, via a display of a mobile device, a plurality of selectable curve shapes; and
transmitting, via the transmitter, the selected curve shape to a control device.
14. The method of claim 1 , further comprising:
displaying, via a display of a mobile device, a graphical user interface (GUI) for allowing a user to select the high-end CCT value of the light emitted by the lighting load while a present intensity level of the lighting load is at a high-end intensity level;
transmitting, via a transmitter of the mobile device, a control signal to the lighting device that indicates the high-end CCT value selected by the user;
adjusting the present intensity level of the lighting load to the high-end intensity level; and
adjusting the CCT of the light emitted by the lighting load while the present intensity level of the lighting load is at the high-end intensity level to the high-end CCT value selected by the user.
15. A system for creating a correlated color temperature dimming (CCT-dimming) curve for a lighting load, the system comprising:
a lighting device comprising a lighting load, a memory, a receiver, and a processor; and
a control device comprising a processor and a transmitter, the processor configured to:
determine CCT-dimming curve data, wherein the CCT-dimming curve data comprises any combination of a high-end correlated color temperature (CCT) value, a low-end CCT value, a CCT range, and a bend value; and
transmit the CCT-dimming curve data to the lighting device;
wherein the processor of the lighting device is configured to:
store the CCT-dimming curve data in the memory of the lighting device;
receive a command to adjust an intensity level of the lighting load to a commanded intensity level; and
control a CCT value of the lighting load based on the CCT-dimming curve data and the commanded intensity level; and
wherein the high-end CCT value is associated with a high-end intensity level of the lighting load, the low-end CCT value is associated with a low-end intensity level of the lighting load, the CCT range defines a difference between the high-end CCT value and the low-end CCT value, and the bend value defines an amount of curvature in a line defining the CCT values across a dimming range between the high-end CCT value and the low-end CCT value.
16. The system of claim 15 , wherein the processor of the lighting device is configured to:
generate a CCT-dimming curve using the CCT-dimming curve data received from the control device.
17. The system of claim 15 , wherein the processor of the lighting device is configured to:
retrieve the high-end CCT value, the low-end CCT value, and the bend value from the memory; and
determine the CCT value for the commanded intensity level based on the high-end CCT value, the low-end CCT value, and the bend value.
18. The system of claim 17 , wherein the processor of the lighting device is configured to determine the CCT value for the commanded intensity level based on:
CCT
[
d
]
=
(
CCT
HE
-
CCT
LE
)
·
(
1
+
B
)
·
d
B
+
d
+
CCT
LE
,
where CCT[d] is the CCT value for the commanded intensity level, CCT HE is the high-end CCT value, CCT LE is the low-end CCT value, B is the bend value, and d is the commanded intensity level.
19. The system of claim 15 , further comprising:
a mobile device comprising a display, a transmitter, and a processor, wherein the processor of the mobile device is configured to:
display a plurality of selectable curve shapes on the display; and
transmit the selected curve shape to the control device.