Adaptive energy performance monitoring and control system

• US 8,433,426 B2
• Filed: 06/30/2006
• Issued: 04/30/2013
• Est. Priority Date: 06/30/2005
• Status: Active Grant

• Current Assignee: LED Roadway Lighting Ltd.
• Original Assignee: LED Roadway Lighting Ltd.
• Inventors: Cleland, Donald A., Kubek, Laurence E., Wong, Carol A., Duval, Gordon A., McCarthy, Colleen D.
• Primary Examiner(s): Decady, Albert
• Assistant Examiner(s): Rapp, Chad
• Application Number:
  US11/479,222
• Publication Number:
  US 20070043540A1
• Time in Patent Office: 2,496 Days
• Field of Search: 700/1, 700/14, 700/19, 700/27
• US Class Current: 700/27
• CPC Class Codes: H05B 47/10 Controlling the light source
• CPC Class Codes: H05B 47/16 by timing means
• CPC Class Codes: H05B 47/175 by remote control
• CPC Class Codes: H05B 47/18 via data-bus transmission
• CPC Class Codes: H05B 47/19 via wireless transmission
• CPC Class Codes: H05B 47/22 with communication between the lamps and a central unit
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection
• CPC Class Codes: Y02B 20/72 in street lighting

Abstract

A controller is configured for and a corresponding method of adaptive monitoring and control of a lighting system are suited for adaptively establishing lighting parameters on a fixture by fixture basis. The controller includes a communication interface configured to communicate with a multiplicity of light fixtures, a memory for storing software routines and information associated with each of the light fixtures; and a processor coupled to the memory and the communication interface and configured to execute the software routines and selectively communicate with at least one of the multiplicity of light fixtures to adaptively establish lighting parameters for the at least one of the multiplicity of light fixtures. A method of facilitating the monitoring and control of the light fixture includes controlling a lamp circuit to provide one of a multiplicity of light levels; assessing performance parameters of the light fixture; and communicating with a central server.

Claims

1. A controller configured for adaptive monitoring and control of a lighting system, the controller comprising:

a communication interface configured to communicate with a multiplicity of geographically distributed light fixtures, the multiplicity of geographically distributed light fixtures operable to provide general lumination to a geographical area;

a memory for storing software routines and information associated with each of the multiplicity of geographically distributed light fixtures, wherein a portion of the information is obtained, via the communication interface, from the each of the multiplicity of geographically distributed light fixtures; and

a processor coupled to the memory and the communication interface, and configured to execute the software routines and selectively communicate with each of the multiplicity of geographically distributed light fixtures to adaptively establish lighting parameters for each of the multiplicity of geographically distributed light fixtures based on lighting information corresponding to the light fixture,

wherein the processor is further configured to adaptively establish different lighting parameters for at least a different one of the multiplicity of geographically distributed light fixtures based on different lighting information associated with the at least a different one of the multiplicity of geographically distributed light fixtures, the lighting parameters establish a lighting level that is compensated for degradation of one or more components of the at least one of the multiplicity of geographically distributed light fixtures.

2. The controller of claim 1 where the processor is further configured to adaptively establish lighting parameters for the at least one of the multiplicity of light fixtures based on lighting status information obtained from the at least one of the multiplicity of light fixtures.

3. The controller of claim 1 where the processor is further configured to adaptively establish the lighting level for and based on lighting status information obtained from the at least one of the multiplicity of light fixtures, where the lighting status information corresponds to the information associated with the at least one of the multiplicity of light fixtures.

4. The controller of claim 1 where the communication interface further comprises a wireless interface to the multiplicity of light fixtures.

5. The controller of claim 4 where the wireless interface further comprises a wireless network configured as a mesh network comprised of a plurality of transceivers associated with a corresponding plurality of the multiplicity of light fixtures.

6. The controller of claim 1 where the communication interface further comprises a wired interface to the multiplicity of light fixtures.

7. The controller of claim 1 where the communication interface provides a communication link to one or more gateways, where each gateway provides a communication link to one or more of the multiplicity of light fixtures.

8. The controller of claim 1 where the processor is further configured to selectively communicate with at least one of the multiplicity of light fixtures to adaptively establish the lighting level for the at least one of the multiplicity of light fixtures, where the lighting level is based on a schedule for the at least one of the multiplicity of light fixtures.

9. The controller of claim 8 where the lighting level varies over three or more levels in accordance with a time of day.

10. The controller of claim 8 where the lighting level corresponds to a lighting application.

11. The controller of claim 8 where the lighting level corresponds to a type of surface to be illuminated.

12. The controller of claim 8 where the lighting level corresponds to an activity level associated with a type of surface to be illuminated.

13. The controller of claim 8 where the lighting level corresponds to performance information obtained from each of the at least one of the multiplicity of light fixtures.

14. The controller of claim 8 where the lighting level corresponds to one or more weather conditions.

15. The controller of claim 1 where the processor is configured to selectively communicate with the at least one of the multiplicity of light fixtures to obtain performance related information associated with the at least one of the multiplicity of light fixtures.

16. The controller of claim 15 where the processor is configured to obtain performance information sufficient to determine power consumption of the at least one of the multiplicity of light fixtures.

17. The controller of claim 1 wherein the lighting level is an actual output lighting level of the at least one of the multiplicity of light fixtures, the actual output lighting level adapted to and substantially equal to a target lighting level over a service life of the at least one of the multiplicity of light fixtures.

18. The controller of claim 1 wherein the processor is configured to establish an output light level that varies in accordance with an activity level associated with a surface to be illuminated by the at least one of the multiplicity of light fixtures.

19. The controller of claim 18 wherein the activity level comprises a pedestrian conflict level.

20. The controller of claim 1, wherein the processor is configure to compensate the lighting level for the degradation of one or more components of the at least one of the multiplicity of geographically distributed light fixtures by setting the lighting level at a minimum acceptable output level and maintaining the minimum acceptable output level over a life cycle of the at least one of the multiplicity of geographically distributed light fixtures.

21. A method of adaptively monitoring and controlling a lighting system, the method comprising:

selectively communicating with each of a multiplicity of geographically distributed light fixtures, the multiplicity of geographically distributed light fixtures operable to provide general lumination to a geographical area;

maintaining a database containing information associated with each of the multiplicity of geographically distributed light fixtures, wherein a portion of the information is obtained from the each of the multiplicity of geographically distributed light fixtures by the selectively communicating; and

adaptively establishing lighting parameters for each of the multiplicity of geographically distributed light fixtures based on lighting information corresponding to the each of the multiplicity of geographically distributed light fixtures by the selectively communicating with each of the multiplicity of geographically distributed light fixtures, the lighting parameters establish a lighting level that is compensated for degradation of one or more components of the at least one of the multiplicity of geographically distributed light fixtures;

wherein the adaptively establishing further comprises establishing different lighting parameters for a first and a second one of the multiplicity of geographically distributed light fixtures based on different lighting status information associated with the first and the second one of the multiplicity of geographically distributed light fixtures.

22. The method of claim 21 where the adaptively establishing lighting parameters for the each of the multiplicity of light fixtures is based on lighting status information obtained from the each of the multiplicity of light fixtures.

23. The method of claim 21 where the adaptively establishing lighting parameters for the each of the multiplicity of light fixtures based on lighting status information further comprises establishing the lighting level for and based on lighting status information obtained from the each of the multiplicity of light fixtures, where the lighting status information corresponds to the information associated with each of the multiplicity of light fixtures.

24. The method of claim 21 where the selectively communicating comprises selectively communicating over a wireless interface to the multiplicity of light fixtures.

25. The method of claim 21 where the selectively communicating comprises selectively communicating over a wired interface to the multiplicity of light fixtures.

26. The method of claim 21 where the selectively communicating comprises selectively communicating over one or more gateways, where each gateway provides a communication link to one or more of the multiplicity of light fixtures.

27. The method of claim 21 where the selectively communicating further comprises selectively communicating with at least one of the multiplicity of light fixtures to adaptively establish the lighting level for the at least one of the multiplicity of light fixtures, where the lighting level is based on a schedule for the at least one of the multiplicity of light fixtures.

28. The method of claim 27 where the lighting level for the at least one of the multiplicity of light fixtures vary over three or more levels in accordance with a time of day.

29. The method of claim 27 where the lighting level corresponds to at least one of a lighting application, a surface to be illuminated, an activity level associated with the surface to be illuminated and environmental conditions in the location of the at least one of the multiplicity of light fixtures.

30. The method of claim 27 where the lighting levels correspond to a measured output light level information obtained from each of the at least one of the multiplicity of light fixtures.

31. The method of claim 21 where the maintaining a database further comprises maintaining a database including configuration information for each of the multiplicity of light fixtures and including information obtained by the selectively communicating with each of the multiplicity of light fixtures to obtain performance related information associated with the each of the multiplicity of light fixtures.

32. The method of claim 31 where the maintaining a database comprises obtaining performance information sufficient to determine power consumption of the each of the multiplicity of light fixtures.

33. The method of claim 31 where the maintaining a database comprises maintaining a database including behavior of one or more components associated with each of the multiplicity of light fixtures.

34. The method of claim 21, wherein the adaptively establishing lighting parameters comprises:

compensating the lighting level for the degradation of one or more components of the at least one of the multiplicity of geographically distributed light fixtures, including setting the lighting level at a minimum acceptable output level and maintaining the minimum acceptable output level over a life cycle of the at least one of the multiplicity of geographically distributed light fixtures.

35. A controller configured for adaptive monitoring and control of a lighting system, the controller comprising:

a communication interface configured to communicate with a multiplicity of geographically distributed light fixtures;

a memory for storing software routines and information associated with each of the multiplicity of geographically distributed light fixtures; and

a processor coupled to the memory and the communication interface and configured to execute the software routines and selectively communicate with each of the multiplicity of geographically distributed light fixtures to adaptively establish lighting parameters for the each of the multiplicity of geographically distributed light fixtures,

wherein the processor is configured to establish an output light level that varies in accordance with an activity level associated with a surface to be illuminated by the at least one of the multiplicity of geographically distributed light fixtures and is compensated for degradation of one or more components of the at least one of the multiplicity of geographically distributed light fixtures, and

wherein the activity level comprises a vehicle activity level.

36. The controller of claim 35 wherein the processor is further configured to adaptively establish lighting parameters for the at least one of the multiplicity of light fixtures based on lighting information corresponding to the at least one of the multiplicity of light fixtures.

37. The controller of claim 36 wherein the processor is further configured to adaptively establish different lighting parameters for at least a different one of the multiplicity of light fixtures based on different lighting information associated with the at least a different one of the multiplicity of light fixtures.

38. The controller of claim 36 wherein the processor is further configured to selectively communicate with each of the at least one of the multiplicity of light fixtures to adaptively establish lighting levels for said each of the at least one of the multiplicity of light fixtures, where the lighting levels are, respectively, further based on a measured output light level information obtained from said each of the at least one of the multiplicity of light fixtures.

39. The controller of claim 35 wherein the memory is further for storing geographic location for each of the multiplicity of light fixtures.

40. The controller of claim 35, wherein the processor is configure to compensate the lighting level for the degradation of one or more components of the at least one of the multiplicity of geographically distributed light fixtures by setting the lighting level at a minimum acceptable output level and maintain the minimum acceptable output level over a life cycle of the at least one of the multiplicity of geographically distributed light fixtures.