Signify Holding B.v.

Eaton Intelligent Power Limited

Cooper Lighting, LLC

Daniel S Foster

Joseph R Casper

Christopher D Nolan

George Albert Dederich

Isaac P Dost

Benjamin David Vollmer

Alexander Orisyuk

Brian M Wilson

A system for detecting misalignment of a light fixture uses a gateway controller device to receive images captured by an aerial drone. The gateway controller will select a group of the images and, for each image in the group: identify a segment of an illuminated surface that is contained in the image; identify a light fixture that is configured to direct light to the segment; and determine whether the image contains content indicating that the light fixture improperly aligned. For any image that indicating that the light fixture is improperly aligned, the system will output a signal indicating that the light fixture requires recalibration.

Lighting device alignment calibration system

A system of networked lighting devices includes a group of lighting device fixture controllers connected in a communication chain. The communication chain provides for transfer of data packets between the lighting device fixture controllers and a central controller. Each fixture controller includes a first power input that receives power from a primary power source, and a priority switch that is configured to switch the fixture controller from the primary power source to a source of DC power upon detecting failure of the primary power source. The source of DC power is sufficient to power the fixture controller and enable the fixture controller to continue to pass a stream of data to other controllers in the communication chain, but it is not sufficient to power the fixture controller's associated lighting device.

Control system for lighting devices

A lighting device includes multiple light emitting diode (LED) channels. Each LED channel is connected in parallel to an output rail of a power converter. The power converter may be a buck regulator. Each LED channel may include an LED string of one or more LEDs, a first transistor that is electrically connected between the LED string and ground, a second transistor that is electrically connected between the first transistor and ground, and a current sensing resistor that is electrically connected between the first transistor and the second transistor. This design provides for self-regulation of current across all LED channels when another LED channel is added to or deleted from the lighting device.

LED luminaire with constant current per-module control

A system of networked lighting devices includes a central controller and a group of lighting devices. The central controller includes a processor, first and second communication interfaces, various lighting devices and a communication link. The first communication interface includes input ports and a multiplexer configured to receive signals from the input ports and combine the received signals into a multiplexed signal. The second communication interface includes one or more antennas and is configured to receive the multiplexed signal from the multiplexer and transmit the multiplexed signal via the antenna(s). Each lighting device includes a fixture controller, one or more lighting modules, and a communication interface. The communication link transmits the multiplexed signal between one or more of the lighting devices and at least one of the communication interfaces of the central controller.

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Syracuse, NY, United States of America

Daniel S Foster