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

Patent metadata

Field	Value
Publication number	US-2016183344-A1
Application number	US-201514975070-A
Country	US
Kind code	A1
Filing date	Dec 18, 2015
Priority date	Dec 19, 2014
Publication date	Jun 23, 2016
Grant date	—

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 load control system comprising:
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 plurality of LED sources of the lighting fixture; wherein 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.

2 . The system of claim 1 , further comprising:
a digital communication link coupled to the controller; wherein the controller is configured to transmit the single digital message via the communication link.

3 . The system of claim 2 , wherein the plurality of LED drivers are coupled to the communication link.

4 . The system of claim 3 , wherein each of the plurality of LED drivers is assigned an identical link address, the controller configured to transmit the single digital message to the plurality of LED drivers using the link address.

5 . The system of claim 4 , wherein each of the plurality of LED drivers is assigned a unique sub-address.

6 . The system of claim 5 , wherein the controller is configured to directly transmit a digital message to one of the plurality of LED drivers using link address and the respective sub-address of the one of the LED drivers.

7 . The system of claim 5 , wherein the sub-addresses are assigned to the plurality of LED drivers during a configuration procedure of the lighting fixture.

8 . The system of claim 4 , wherein each of the plurality of LED drivers is assigned an identical fixture serial number during a configuration procedure of the lighting fixture, the controller configured to use the fixture serial number to assign the link address to each of the LED drivers.

9 . The system of claim 2 , further comprising:
a control module coupled to the communication link and configured to receive the single digital message from the system controller, the control module further coupled to each of the LED drivers and configured to individually control the LED drivers to control the cumulative light emitted by the lighting fixture in response to the single digital message.

10 . The system of claim 2 , wherein a first one of the LED drivers is coupled to the communication link and is configured to receive the single digital message from the system controller, the first LED driver further coupled to at least one other LED driver, the first LED driver configured to control the intensity of the LED light source coupled to the first LED driver in response to the single digital message, the first LED driver further configured to control the at least one other LED driver to control the cumulative light emitted by the lighting fixture in response to the single digital message.

11 . The system of claim 1 , wherein the plurality of LED light sources comprise different color LED light sources, each of the plurality of LED drivers configured to control the respective LED light source to adjust the color of the cumulative light emitted by the lighting fixture in response to the single digital message transmitted by the controller.

12 . The system of claim 11 , wherein each of the LED drivers comprises a color engine for controlling the intensity of the respective LED light source in response to the single digital message.

13 . The system of claim 12 , wherein the color engine of each of the LED drivers comprises one of a fixed color temperature, a color trajectory, and a color map.

14 . A lighting fixture comprising:
a plurality of light-emitting diode (LED) light sources generating a cumulative light emitted by the lighting fixture; and 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; wherein 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 receiving a single digital message.

15 . The lighting fixture of claim 14 , wherein the plurality of LED drivers are coupled to a digital communication link and configured to receive the single digital message.

16 . The lighting fixture of claim 15 , wherein each of the plurality of LED drivers is assigned an identical link address, the link address being included in the single digital message transmitted on the communication link.

17 . The lighting fixture of claim 16 , wherein each of the plurality of LED drivers is assigned a unique sub-address.

18 . The lighting fixture of claim 17 , wherein each of the LED drivers is configured to receive and respond to a digital message including the link address and the sub-address of the respective LED driver.

19 . The lighting fixture of claim 17 , wherein the sub-addresses are assigned to the plurality of LED drivers during a configuration procedure of the lighting fixture.

20 . The lighting fixture of claim 16 , wherein each of the plurality of LED drivers is assigned an identical fixture serial number during a configuration procedure of the lighting fixture, the fixture number being used to assign the link address to each of the LED drivers.

21 . The lighting fixture of claim 14 , wherein the plurality of LED light sources comprise different color LED light sources, each of the plurality of LED drivers configured to control the respective LED light source to adjust the color of the cumulative light emitted by the lighting fixture in response to the single digital message.

22 . The lighting fixture of claim 21 , wherein each of the LED drivers comprises a color engine for controlling the intensity of the respective LED light source in response to the single digital message.

23 . The lighting fixture of claim 22 , wherein the color engine of each of the LED drivers comprises one of a fixed color temperature, a color trajectory, and a color map.

24 . The lighting fixture of claim 14 , further comprising:
a control module coupled to the communication link and configured to receive the single digital message, the control module further coupled to each of the LED drivers and configured to individually control the LED drivers to control the cumulative light emitted by the lighting fixture in response to the single digital message.

25 . The lighting fixture of claim 14 , wherein a first one of the LED drivers is coupled to the communication link and is configured to receive the single digital message, the first LED driver further coupled to at least one other LED driver, the first LED driver configured to control the intensity of the LED light source coupled to the first LED driver in response to the single digital message, the first LED driver further configured to control the at least one other LED driver to control the cumulative light emitted by the lighting fixture in response to the single digital message.

26 . A controller for controlling a cumulative light emitted by a lighting fixture, the lighting fixture including a plurality of light-emitting diode (LED) light sources and a plurality

Assignees

• Lutron Electronics Co

Inventors

• Chitta Venkatesh
• Abraham Arya

Classifications

• H05B47/155 Primary

  Coordinated control of two or more light sources · CPC title

• H05B45/20 Primary

  Controlling the colour of the light · CPC title

• H05B47/175

  by remote control · CPC title

• G05B2219/23172

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

• G05B19/102

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