Multi-channel lighting fixture having multiple light-emitting diode drivers
AssigneeLutron Electronics Co., Inc.
InventorsVenkatesh Chitta, Arya Abraham
Life of this patent
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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.
Claims32
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 located within the lighting fixture, the plurality of LED drivers being 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 plurality of LED drivers are coupled to a communication link and are responsive to communications having a common link address, and wherein each of the plurality of LED drivers is capable of communicating on the communication link using a respective sub-address;
- and
- a controller configured to transmit a single digital message to the plurality of LED drivers located within the lighting fixture using the common link address, wherein the single digital message causes the cumulative light to be 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 being transmitted to the plurality of LED drivers on the communication link.
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 that are each adapted 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, wherein the plurality of LED drivers are coupled to a communication link and are responsive to communications having a common link address, and wherein each of the plurality of LED drivers is capable of communicating on the communication link using a respective sub-address;
- 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 a single digital message received on the communication link.
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 of respective LED drivers, the controller comprising:
- a communication circuit configured to transmit digital messages via a digital communication link to the plurality of respective LED drivers on a communication link;
- and
- a control circuit configured to cause the communication circuit to transmit a single digital message on the communication link to the plurality of respective LED drivers using a common link address, the single digital message including a command for causing the plurality of respective LED drivers to adjust the intensity of the respective LED light sources to respective preset intensities to control the cumulative light emitted by the lighting fixture, and wherein the control circuit is further configured to cause the communication circuit to transmit digital messages to, or receive digital messages from, each of the plurality of respective LED drivers using a respective sub-address.
A control module 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 of respective LED drivers, the control module comprising:
- a first communication circuit configured to receive a digital message via a digital communication link, wherein the digital message comprises a common link address for the plurality of LED drivers in the lighting fixture;
- a second communication circuit adapted to be electrically coupled to the plurality of respective LED drivers for controlling the respective LED light sources, wherein each of the plurality of respective LED drivers is capable of communicating via the second communication circuit using a respective sub-address;
- a memory configured to store a light engine defining preset intensities for the LED light sources;
- and
- a control circuit configured to control the plurality of respective LED drivers to adjust the intensity of the plurality of LED light sources to respective preset intensities to control the cumulative light emitted by the lighting fixture in response to a single digital message having the common link address via the digital communication link.
A master light-emitting diode (LED) driver for controlling a cumulative light emitted by a lighting fixture, the lighting fixture including at least two LED light sources and at least one slave LED driver, the master LED driver comprising:
- a load regulation circuit adapted to be coupled to a first LED light source of the at least two LED light sources and configured to control an intensity of the first LED light source;
- a first communication circuit configured to receive a digital message via a digital communication link, wherein the digital message comprises a common link address;
- a second communication circuit adapted to be electrically coupled to the slave LED driver for controlling the second LED light source, wherein the second communication circuit is capable of communicating with the slave LED driver via a respective sub-address;
- and
- a control circuit configured to control the cumulative light emitted by the lighting fixture in response to the digital message via the digital communication link, wherein the control circuit is configured to control the load regulation circuit to adjust the intensity of the first LED light source in response to the digital message received via the first communication circuit, and wherein the control circuit is configured to control the slave LED driver via the second communication circuit to adjust the intensity of the second LED light source in response to the digital message received via the first communication circuit.
A method of configuring at least a first light-emitting diode (LED) driver and a second LED driver to be installed in a single lighting fixture, the lighting fixture including at least a first LED light source and a second LED light source adapted to be controlled by the respective LED drivers to control a cumulative light emitted by the lighting fixture, the method comprising:
- storing a first light engine in a first memory of the first LED driver, the first light engine defining preset intensities for the first LED light source;
- and
- storing a second light engine in a second memory of the second LED driver, the second light engine defining preset intensities for the second LED light source;
- wherein the first LED driver and the second LED driver, when coupled to a communication link, are responsive to communications having a common link address, wherein the first LED driver and the second LED driver are configured to control the cumulative light emitted by the lighting fixture in response to a single digital message received via the communication link, and the first LED driver and the second LED driver are capable of communicating on the communication link using a respective sub-address, and wherein the first LED driver and the second LED driver are configured to adjust the intensities of the respective LED light sources to respective preset intensities determined from the respective light engines.
Dependencies are inferred from the claim text.