Multi-channel lighting fixture having multiple light-emitting diode drivers

Patent metadata

Field	Value
Publication number	US-10057958-B2
Application number	US-201815869653-A
Country	US
Kind code	B2
Filing date	Jan 12, 2018
Priority date	Dec 19, 2014
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

A lighting control system for controlling a cumulative light emitted by a lighting fixture having a plurality of LED light sources may comprise a plurality of LED drivers adapted to be coupled to a respective one of the LED light sources and configured to control an intensity of the respective LED light source, and a controller configured to transmit a single digital message for controlling the cumulative light emitted by the lighting fixture. Each of the plurality of LED drivers is configured to adjust the intensity of the respective LED light source to a preset intensity in response to the single digital message transmitted by the controller.

First claim

What is claimed is:

1. A lighting control system for controlling a cumulative light emitted by a lighting fixture having a plurality of light-emitting diode (LED) light sources, the lighting control system comprising:
at least one LED driver located within the lighting fixture;
a control module located within the lighting fixture and coupled to the at least one LED driver, and configured to control the at least one LED driver to control the cumulative light emitted by the plurality of LED light sources of the lighting fixture; and
a controller located external to the lighting fixture and configured to transmit at least one digital message to the control module for controlling the cumulative light emitted by the plurality of LED light sources of the lighting fixture;
wherein the control module is further configured to receive the at least one digital message from the system controller and to control the at least one LED driver to adjust respective intensities of the plurality of LED light sources to respective preset intensities in response to the at least one digital message transmitted by the controller.

2. The lighting control system of claim 1 ,
wherein the control module comprises a memory configured to store a light engine defining preset intensities for the plurality of LED light sources; and
wherein the control module is further configured to use the light engine to control the at least one LED driver to adjust the respective intensities of the plurality of LED light sources to the respective preset intensities in response to the at least one digital message transmitted by the controller.

3. The lighting control system of claim 2 , wherein the lighting fixture comprises a plurality of LED drivers coupled to the control module, the plurality of LED drivers further coupled to a respective one of the plurality of LED light sources and configured to control an intensity of the respective one of the plurality of LED light sources, the control module further configured to control the plurality of LED drivers to adjust the respective intensities of the plurality of LED light sources to the respective preset intensities in response to the at least one digital message transmitted by the controller.

4. The lighting control system of claim 3 , wherein the control module is assigned a link address, the controller further configured to transmit the at least one digital message to the control module using the link address.

5. The lighting control system of claim 4 , wherein each of the plurality of LED drivers is assigned a respective fixture address.

6. The lighting control system of claim 5 , wherein the control module is further configured to individually control each of the plurality of LED drivers using the respective fixture address.

7. The lighting control system of claim 6 , wherein each respective fixture address is stored on the control module during a configuration procedure of the lighting fixture.

8. The lighting control system of claim 3 , wherein the plurality of LED light sources comprise different color LED light sources, and the control module is further configured to control the plurality of LED drivers to adjust a color temperature of the cumulative light emitted by the lighting fixture in response to the at least one digital message transmitted by the controller.

9. The lighting control system of claim 8 , wherein the light engine comprises one of a fixed color temperature, a color trajectory, and a color map.

10. The lighting control system of claim 9 , further comprising:
a communication link coupled to the controller and the control module;
wherein the controller is configured to transmit the at least one digital message to the control module via the communication link.

11. The lighting control system of claim 10 , wherein the at least one LED driver is coupled to the communication link.

12. A lighting fixture comprising:
a plurality of light-emitting diode (LED) light sources configured to generate a cumulative light emitted by the lighting fixture;
at least one LED driver; and
a control module configured to control the at least one LED driver to control the cumulative light emitted by the lighting fixture, the control module further configured to:
receive at least one digital message for controlling the cumulative light emitted by the plurality of LED light sources; and
control the at least one LED driver to adjust respective intensities of the plurality of LED light sources to respective preset intensities in response to the at least one digital message.

13. The lighting fixture of claim 12 ,
wherein the control module comprises a memory configured to store light engine defining preset intensities for the plurality of LED light sources; and
wherein the control module is further configured to use the light engine to control the at least one LED driver to adjust the respective intensities of the plurality of LED light sources to the respective preset intensities in response to the at least one digital message.

14. The lighting fixture of claim 13 , wherein the plurality of LED light sources comprise different color LED light sources, and the control module is further configured to control the at least one LED driver to control the plurality of LED light sources to adjust a color temperature of the cumulative light emitted by the lighting fixture in response to the at least one digital message.

15. The lighting fixture of claim 14 , wherein the light engine comprises one of a fixed color temperature, a color trajectory, and a color map.

16. The lighting fixture of claim 13 , further comprising:
a plurality of LED drivers coupled to a respective one of the plurality of LED light sources and configured to control an intensity of the respective one of the plurality of LED light sources;
wherein the control module is further configured to control the plurality of LED drivers to adjust the respective intensities of the plurality of LED light sources to the respective preset intensities in response to the at least one digital message.

17. A control module configured to be installed in a lighting fixture and for controlling a cumulative light emitted by the lighting fixture, the lighting fixture configured to include a plurality of LED light sources and a plurality of LED drivers, the plurality of LED drivers configured to be coupled to a respective one of the plurality of LED light sources and configured to control an intensity of the respective one of the plurality of LED light sources, the control module comprising:
a communication circuit configured to receive a digital message;
a memory configured to store a light engine defining preset intensities for the LED light sources; and
a control circuit configured to use the light engine to control the plurality of LED drivers of the lighting fixture to adjust respective intensities of the plurality of LED light sources of the lighting fixture to respective preset intensities to control the cumulative light emitted by the lighting fixture in response to the digital message received via the communication circuit.

18. The control module of claim 17 , further comprising:
at least one controllably conductive device for controlling power delivered to the plurality of LED drivers.

19. The control module of claim 18 , further comprising:
a second communication circuit adapted to be electrically coupled to the plurality of LED drivers for controlling the respective LED light sources.

20. The control module of claim 17 , wherein the light engi

Assignees

• Lutron Electronics Co

Inventors

• Chitta Venkatesh
• Abraham Arya

Classifications

• H05B45/20 Primary

  Controlling the colour of the light · CPC title

• H05B47/175

  by remote control · CPC title

• H05B47/155 Primary

  Coordinated control of two or more light sources · CPC title

• G05B19/102

  for input of program steps, i.e. setting up sequence · CPC title

• G05B2219/23172

  Different states with one LED, blinking, on and off or different colours · CPC title