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US 8,805,550 B2Granted
Power management unit with power source arbitration
AssigneeDigital Lumens Incorporated
InventorsBrian J. Chemel, Colin Piepgras, Steve T. Kondo, Scott D. Johnston
Life of this patent
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Abstract
In embodiments of the present invention, a method and system is provided for designing improved intelligent, LED-based lighting systems. The LED based lighting systems may include fixtures with one or more of rotatable LED light bars, integrated sensors, onboard intelligence to receive signals from the LED light bars and control the LED light bars, and a mesh network connectivity to other fixtures.
Claims37
A method of lighting an environment with variable lighting, the method comprising:
- A) storing, in a memory, (i) at least one rule for lighting the environment based at least in part on energy demand information associated with powering a plurality of light emitting diodes (LEDs) with electrical power so as to produce a luminous flux and (ii) a model of a luminous efficacy of the plurality of LEDs, wherein the model of the luminous efficacy represents a ratio of the luminous flux to the electrical power;
- B) performing a comparison of the energy demand information with energy consumption information related to consuming the electrical power from each of a plurality of power sources according to the at least one rule;
- C) selecting at least one of an intensity of the variable lighting and a power source from among the plurality of power sources for powering the plurality of LEDs according to the comparison performed in B) and the model of the luminous efficacy of the plurality of LEDs;
- D) performing an analysis of at least one of the energy demand information, the energy consumption information, and a weather forecast;
- and
- E) generating a change to the at least one rule based on the analysis of the at least one of the energy demand information, the energy consumption information, and the weather forecast.
3 more elements
A lighting fixture, comprising:
- a light emitting diode (LED) lighting module, powered by at least one of a plurality of power sources, to provide variable lighting to an environment;
- and
- a power management module (PMM), operably coupled to the LED lighting module, to supply electrical power to the LED lighting module so as to cause the LED lighting module to emit a luminous flux, wherein the PMM includes:
- a memory to store at least one rule used to manage the variable lighting provided by the LED lighting module and a model of a luminous efficacy of the LED lighting module, wherein the model of the luminous efficacy represents a ratio of the luminous flux to the electrical power;
- a processor, operably coupled to the memory, to perform a comparison of energy demand information and energy consumption information associated with the LED lighting module and to select at least one of an intensity of the variable lighting and the at least one power source from among the plurality of power sources according to the comparison and the model of the luminous efficacy;
- and
- a data interface, operably coupled to the memory, to receive a change to the at least one rule from a management module, wherein the management module includes a second processor to:
- perform an analysis of at least one of the energy demand information, the energy consumption information, and a weather forecast;
- generate the change to the at least one rule based on the analysis of the at least one of the energy demand information, the energy consumption information, and the weather forecast;
- and
- communicate the change to the at least one rule to the PMM via the data interface.
8 more elements
A networked lighting system, comprising:
- a plurality of LED lighting fixtures to provide a luminous flux to an environment, wherein each of the plurality of LED lighting fixtures is powered by electrical power from at least one power source from among a plurality of power sources and includes a power management module (PMM), wherein each PMM includes:
- a memory to store at least one rule used to manage the luminous flux provided by at least one of the plurality of LED lighting fixtures and a model of a luminous efficacy of the at least one of the plurality of LED lighting fixtures, wherein the model of the luminous efficacy represents a ratio of the luminous flux to the electrical power;
- and
- a processor, operably coupled to the memory, to perform a comparison of energy demand information and energy consumption information associated with the at least one of the plurality of LED lighting fixtures and to select at least one of an intensity of the variable lighting and the at least one power source from among the plurality of power sources according to the comparison and the model of the luminous efficacy of the at least one of the plurality of LED lighting fixtures;
- and
- a management system, operably coupled to the plurality of LED lighting fixtures, to perform an analysis of at least one of the energy demand information, the energy consumption information, and a weather forecast and to update the at least one rule based on the analysis.
3 more elements
Dependencies are inferred from the claim text.