Methods, apparatus, and systems for automatic power adjustment based on energy demand information

• US 8,866,408 B2
• Filed: 07/08/2010
• Issued: 10/21/2014
• Est. Priority Date: 04/14/2008
• Status: Active Grant

• Current Assignee: OSRAM Sylvania Inc. (Ams-Osram AG)
• Original Assignee: Digital Lumens, Inc. (Ams-Osram AG)
• Inventors: Chemel, Brian J., Piepgras, Colin, Kondo, Steve T., Johnston, Scott D.
• Primary Examiner(s): Owens, Douglas W
• Assistant Examiner(s): COOPER, JONATHAN G
• Application Number:
  US12/832,179
• Publication Number:
  US 20100301774A1
• Time in Patent Office: 1,566 Days
• Field of Search: 315/291, 315/294, 315/297, 315/307, 315/308, 315/318, 315/360, 700/295, 700/296
• US Class Current: 315/297
• CPC Class Codes: H05B 47/155 Coordinated control of two or more light sources
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

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.

Claims

1. A method of powering a lighting fixture, the method comprising:

A) receiving energy demand information from an energy utility;

B) powering at least one light emitting diode (LED) in the lighting fixture, with a power management unit, in accordance with a set of stored rules, the set of stored rules including at least one rule based on the energy demand information received in A);

C) receiving power consumption data associated with the at least one LED from the lighting fixture;

D) automatically adjusting power provided to the at least one LED in the lighting fixture, according to the at least one rule, based at least in part on the energy demand information received in A) and the power consumption data received in C);

E) logging the power consumption data received in C) in a database.

F) analyzing the power consumption data logged in E); and

G) adjusting the at least one rule based at least in part on the analysis performed in F),

wherein D) comprises;

regulating a beam angle of light emitted by the at least one LED;

regulating an intensity of a portion of the beam angle of the light emitted by the at least one LED; and

/or

varying a brightness of the at least one LED.

2. The method of claim 1, wherein A) comprises receiving at least one of:

electricity cost information; and

electricity supply information.

3. The method of claim 1, wherein the electricity cost information comprises information about times associated with peak electricity prices.

4. The method of claim 1, wherein D) further comprises:

D1) comparing the energy demand information to an energy demand parameter stored in a database; and

D2) evaluating the comparison in D1) according to the at least one rule.

5. The method of claim 4, wherein D) further comprises:

D3) communicating lighting control information based on the evaluation performed in D2) to at least one other lighting fixture.

6. The method of claim 1, wherein D) further comprises at least one of:

D4) cycling the power provided to the at least one LED in the lighting fixture;

D5) reducing the power provided to the at least one LED in the lighting fixture; and

D6) supplying the power provided to the at least one LED in the lighting fixture from an energy source other than the energy utility.

7. The method of claim 6, wherein D6) comprises supplying the power from at least one of a solar cell, a wind energy source, a battery, a fuel cell, a flywheel, an ultra-capacitor, a capacitor, a mechanical energy storage device, a superconducting magnetic energy storage, a compressed air energy storage, a hydraulic accumulator, cryogenic liquid air, a thermal store, and a steam accumulator.

25. The method of claim 2, further comprising:

H) estimating a future energy supply based on weather forecast information and the energy supply information.

8. A lighting fixture comprising:

at least one light-emitting diode (LED) to illuminate an environment;

a communications interface to receive energy demand information from an energy utility;

a memory to store a set of rules, the set of stored rules including at least one rule based on the energy demand information from the energy utility; and

a power management unit (PMU) to determine power consumption data associated with the at least one LED and to adjust power provided to the at least one LED, according to the at least one rule, based at least in part on the energy demand information received and the power consumption data,

wherein the PMU is configured to determine the performance of optical elements and provide an output when light output drops below a pre-defined level.

9. The lighting fixture of claim 8, wherein the energy demand information comprises at least one of:

electricity cost information; and

electricity supply information.

10. The lighting fixture of claim 9, wherein the electricity cost information comprises information about times associated with peak electricity prices.

11. The lighting fixture of claim 8, wherein the PMU is configured to adjust the power provided to the at least one LED in accordance with a comparison of the energy demand information to an energy demand parameter stored in a database and to evaluate the comparison according to the at least one rule.

12. The lighting fixture of claim 8, wherein the PMU is configured to adjust the power provided to the at least one LED by at least one of:

cycling the power provided to the at least one LED;

reducing the power provided to the at least one LED; and

supplying the power provided to the at least one LED from an alternative energy source.

13. The lighting fixture of claim 12, wherein the alternative energy source comprises at least one of a solar cell, a wind energy source, a battery, a fuel cell, a flywheel, an ultra-capacitor, a capacitor, a mechanical energy storage device, a superconducting magnetic energy storage, a compressed air energy storage, a hydraulic accumulator, cryogenic liquid air, a thermal store, and a steam accumulator.

14. A network of lighting fixtures to provide lighting to an environment, the network comprising:

A) a central management unit (CMU) comprising;

A1) a first communications interface to receive energy demand information from an energy utility;

A2) a memory to store a set of rules, the set of stored rules including at least one rule based on the energy demand information from the energy utility; and

A3) a processor to provide lighting control information based at least in part on the energy demand information and the at least one rule; and

B) at least one lighting fixture comprising;

B1) at least one light source to illuminate at least a portion of the environment;

B2) a second communications interface to receive the lighting control information from the CMU; and

B3) a power management unit to control power provided to the at least one light source in accordance with the lighting control information from the CMU and to transmit power consumption data associated with the at least one light source to the central management unit,

wherein the CMU forms a separate unit from the power management unit.

15. The network of claim 14, wherein the energy demand information comprises at least one of:

electricity cost information; and

electricity supply information.

16. The network of claim 15, wherein the electricity cost information comprises information about times associated with peak electricity prices.

17. The network of claim 14, wherein the CMU is further configured to log the power consumption data from the at least one lighting fixture in the memory.

18. The network of claim 17, wherein the processor of the CMU is configured to perform an analysis of the power consumption data logged in the database and to adjust the at least one rule based at least in part on the analysis.

19. The network of claim 14, wherein the memory of the CMU is configured to store at least one energy parameter associated with the at least one lighting fixture, and the processor of the CMU is configured to compare the power consumption data with the at least one energy parameter according to the at least one rule.

20. The network of claim 14, wherein the processor of the CMU is further configured to track the cost of energy at a particular time of day based on the energy demand information.

21. A network of lighting fixtures to provide lighting to an environment, the network comprising:

A) a central management unit (CMU) comprising;

A1) a first communications interface to receive energy demand information from an energy utility;

A2) a memory to store a set of rules, the set of stored rules including at least one rule based on the energy demand information from the energy utility; and

A3) a processor to provide lighting control information based at least in part on the energy demand information and the at least one rule; and

B) at least one lighting fixture comprising;

B1) at least one light source to illuminate at least a portion of the environment;

B2) a second communications interface to receive the lighting control information from the CMU; and

B3) a power management unit to control power provided to the at least one light source in accordance with the lighting control information from the CMU and to transmit power consumption data associated with the at least one light source to the central management unit,

wherein the processor is a first processor and the power management unit comprises a second processor to control the power provided to the at least one light source in accordance with the lighting control information from the CMU.

22. A method of powering a lighting fixture, the method comprising:

A) receiving energy demand information from an energy utility;

B) powering at least one light emitting diode (LED) in the lighting fixture, with a power management unit, in accordance with a set of stored rules, the set of stored rules including at least one rule based on the energy demand information received in A);

C) receiving power consumption data associated with the at least one LED from the lighting fixture;

D) automatically adjusting power provided to the at least one LED in the lighting fixture, according to the at least one rule, based at least in part on the energy demand information received in A) and the power consumption data received in C);

E) logging the power consumption data received in C) in a database.

F) analyzing the power consumption data logged in E); and

G) adjusting the at least one rule based at least in part on the analysis performed in F),

wherein B) comprises storing the set of stored rules in a third party database.

23. A method of powering a lighting fixture, the method comprising:

A) receiving energy demand information from an energy utility;

B) powering at least one light emitting diode (LED) in the lighting fixture, with a power management unit, in accordance with a set of stored rules, the set of stored rules including at least one rule based on the energy demand information received in A);

C) receiving power consumption data associated with the at least one LED from the lighting fixture;

D) automatically adjusting power provided to the at least one LED in the lighting fixture, according to the at least one rule, based at least in part on the energy demand information received in A) and the power consumption data received in C);

E) logging the power consumption data received in C) in a database.

F) analyzing the power consumption data logged in E); and

G) adjusting the at least one rule based at least in part on the analysis performed in F),

wherein D) comprises varying an amount of time the at least one LED is turned on in response to a sensor input.

24. A method of powering a lighting fixture, the method comprising:

A) receiving energy demand information from an energy utility;

B) powering at least one light emitting diode (LED) in the lighting fixture, with a power management unit, in accordance with a set of stored rules, the set of stored rules including at least one rule based on the energy demand information received in A);

C) receiving power consumption data associated with the at least one LED from the lighting fixture;

D) automatically adjusting power provided to the at least one LED in the lighting fixture, according to the at least one rule, based at least in part on the energy demand information received in A) and the power consumption data received in C);

E) logging the power consumption data received in C) in a database.

F) analyzing the power consumption data logged in E); and

G) adjusting the at least one rule based at least in part on the analysis performed in F),

wherein F) comprises generating at least one report including information based on one or more of a percentage time in compliance with lighting parameters, a cost of energy to maintain compliance, an amount of alternative energy, a cost of alternative energy, efficiencies, and maintenance costs.

26. A lighting fixture comprising:

at least one light-emitting diode (LED) to illuminate an environment;

a communications interface to receive energy demand information from an energy utility;

a memory to store a set of rules, the set of stored rules including at least one rule based on the energy demand information from the energy utility; and

a power management unit (PMU) to determine power consumption data associated with the at least one LED and to adjust power provided to the at least one LED, according to the at least one rule, based at least in part on the energy demand information received and the power consumption data,

wherein the PMU is configured to switch power provided to the at least one LED from the energy utility to an alternative energy source based on the energy demand information from the energy utility.

27. A lighting fixture comprising:

at least one light-emitting diode (LED) to illuminate an environment;

a communications interface to receive energy demand information from an energy utility;

a memory to store a set of rules, the set of stored rules including at least one rule based on the energy demand information from the energy utility; and

a power management unit (PMU) to determine power consumption data associated with the at least one LED and to adjust power provided to the at least one LED, according to the at least one rule, based at least in part on the energy demand information received and the power consumption data,

wherein the PMU is configured to monitor current consumption to a LED light bar to determine information about the type of LED light bar.