Advanced networked lighting control system including improved systems and methods for automated self-grouping of lighting fixtures

• US 9,961,750 B2
• Filed: 02/22/2017
• Issued: 05/01/2018
• Est. Priority Date: 02/24/2016
• Status: Active Grant

• Current Assignee: Leviton Manufacturing Company Incorporated
• Original Assignee: Leviton Manufacturing Company Incorporated
• Inventors: Leinen, Richard A., Hick, Robert L.
• Primary Examiner(s): A, Minh D
• Application Number:
  US15/439,012
• Publication Number:
  US 20170245351A1
• Time in Patent Office: 433 Days
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: H05B 45/12 using optical feedback
• CPC Class Codes: H05B 47/11 by determining the brightness or colour temperature of ambient light
• CPC Class Codes: H05B 47/19 via wireless transmission
• CPC Class Codes: H05B 47/195 the transmission using visible or infrared light
• CPC Class Codes: H05B 47/198 Grouping of control procedures or address assignation to light sources
• CPC Class Codes: H05B 47/199 Commissioning of light sources
• CPC Class Codes: H05B 47/1995 Auto-commissioning
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

An advanced lighting control system including systems for commissioning a network of lighting fixtures preferably includes a plurality of lighting fixtures, each having a sensor and control module. The sensor and control module includes occupancy and light sensing elements, and a first transceiver. The lighting fixtures can send wireless signals to a second transceiver located in a room controller and/or a network coordinator. The room controller being configured to interpret the occupancy and light sensing information and make decisions thereon, while the network coordinator can rank the lighting fixtures according to a determined signal strength. The network coordinator can command each of the lighting fixtures to illuminate, and based on an observation of the lighting fixture, a determination is made about whether the lighting fixture is located in a particular room. The network coordinator can also include a third transceiver for receiving wireless commands from a remote device.

Claims

1. A system for commissioning a network of lighting fixtures, comprising:

a plurality of lighting fixtures, each of the plurality of lighting fixtures including;

a lighting element;

an identifier unique to each of said plurality of lighting fixtures;

a sensor module associated with at least one of the lighting elements, the sensor module including an occupancy sensing element, a light sensing element and a first transceiver; and

a network coordinator comprising a second transceiver, the network coordinator configured to discover, group and control a portion of the plurality of lighting fixtures by communicating with the first transceivers of each of the plurality of lighting fixtures;

wherein the network coordinator includes a processor programmed to;

receive, via the second wireless transceiver, respective wireless messages sent from each of the plurality of lighting fixtures, each of the respective wireless messages including the identifier associated with the respective lighting fixture;

determine a respective signal strength associated with each of said respective wireless messages; and

rank each of the plurality of lighting fixtures according to the determined signal strength.

2. The system of claim 1, wherein each of the plurality of lighting fixtures further includes a housing, the housing including the lighting element and the sensor module disposed.

3. The system of claim 1, further comprising a third transceiver associated with the network coordinator, the third transceiver for receiving wireless messages from a remote device for controlling an operational function of the network coordinator.

4. The system of claim 3, wherein the network coordinator is a ZigBee coordinator, the first transceiver of each of the plurality of lighting fixtures comprises a ZigBee transceiver, and the third transceiver is a Bluetooth low energy (BLE) transceiver.

5. The system of claim 1, wherein the network coordinator is disposed in an entry station associated with a room, the room containing at least a portion of the plurality of lighting fixtures.

6. The system of claim 1, wherein the network coordinator is disposed in one of said plurality of lighting fixtures.

7. The system of claim 1, wherein each of the plurality of lighting fixtures further comprises a processor programmed to send a respective one of said respective wireless messages upon a powering up of said lighting fixture.

8. The system of claim 1, wherein the processor of said network coordinator is programmed to command the second transceiver to send a wireless activation signal to the first transceivers of each of the plurality of lighting fixtures, the wireless activation signal configured to command the first wireless transceivers to send the respective wireless messages.

9. The system of claim 1, wherein the processor of said network coordinator is programmed to add each of the plurality of lighting fixtures, from which a respective wireless message is received, to a networked lighting group.

10. The system of claim 9, wherein the processor of said network coordinator is programmed to selectively command, via the second transceiver, each of said lighting fixtures to illuminate their respective lighting elements, based on the determined ranking.

11. The system of claim 10, wherein the processor of said network coordinator begins said selective commanding in response to a user input selected from a list consisting of a light flash, a button press on an entry station, and a wireless signal from a remote device.

12. The system of claim 1, wherein each of the plurality of lighting fixtures send a plurality of said respective messages.

13. The system of claim 1, wherein the sensor module is directly coupled to the lighting element, the lighting element comprising a light source connected to a driver or a light source having an integral driver.

14. The system of claim 1, wherein the network coordinator is disposed in a room controller associated with a room in which at least some of the plurality of lighting fixtures are disposed.

15. A method for commissioning a networked lighting system, comprising:

sending, from a plurality of lighting fixtures, respective wireless messages to a network coordinator associated with an area, each of the respective wireless messages including an identifier associated with the respective lighting fixture;

receiving, at the network coordinator, the respective wireless messages;

determining, at the network coordinator, a respective signal strength associated with each of said respective wireless messages;

ranking each of the plurality of lighting fixtures according to the determined signal strength;

sending, from the network coordinator, a wireless message to a highest ranked one of said plurality of lighting fixtures, the wireless message instructing the highest ranked one to illuminate an associated lighting element;

determining whether said illuminated lighting element is located within the area; and

keeping the highest ranked one in a networked lighting group if said illuminated lighting element is determined to be located within the area, or removing the highest ranked one from said networked lighting group if said illuminated lighting element is determined not to be located within the area.

16. The method of claim 15, wherein the step of sending respective wireless messages to a network coordinator is in response to a light flash provided to a light sensing element associated with each of said plurality of lighting fixtures.

17. The method of claim 15, wherein the step of sending respective wireless messages to a network coordinator is in response to an occupancy condition sensed by an occupancy sensing element associated with each of said plurality of lighting fixtures.

18. The method of claim 15, wherein the step of sending respective wireless messages to a network coordinator is in response to a wireless activation message sent by the network coordinator.

19. The method of claim 18, wherein the network coordinator is disposed within the entry station.

20. The method of claim 19, the entry station further comprising a wireless transceiver for communicating with a remote device, the remote device running an application configured to enable a user to control at least one aspect of the entry station.

21. The method of claim 18, wherein the network coordinator is disposed within a housing of one of the plurality of lighting fixtures.

22. The method of claim 21, the one of the plurality of lighting fixtures further comprising a wireless transceiver for communicating with a remote device, the remote device running an application configured to enable a user to control at least one aspect of the one of the plurality of lighting fixtures.

23. The method of claim 15, wherein the step of sending respective wireless messages to a network coordinator is in response to a powering up of each of said plurality of lighting fixtures.

24. The method of claim 15, further comprising, before the step of sending, from the network coordinator, a wireless message to a highest ranked one of said plurality of lighting fixtures, adding each of the plurality of lighting fixtures, from which the respective wireless messages have been received by the network coordinator, to a networked lighting group.

25. The method of claim 15, wherein the steps of sending, from the network coordinator, a wireless message to a highest ranked one of said plurality of lighting fixtures and determining whether said illuminated lighting element is located within the area are repeated until one of the plurality of lighting fixtures in the ranked list is determined to be in the area, wherein network coordinator keeps the lighting fixture illuminating its lighting element in the networked lighting group and identifies it as the first grouped lighting fixture.

26. The method of claim 25, wherein determining whether said illuminated lighting element is located within the area is performed by an installer.

27. The method of claim 26, the installer confirms that the illuminated lighting fixture is located within the area by pressing a button, soft key or other data entry feature on an entry station.

28. The method of claim 26, the installer confirms that the illuminated lighting fixture is located within the area by pressing a button on a remote device.

29. The method of claim 15, further comprising:

sending, from the network coordinator, a wireless message to a second highest ranked lighting fixture of said plurality of lighting fixtures, the wireless message instructing the second highest ranked lighting fixture to illuminate an associated lighting element;

determining whether said lighting element associated with said second highest ranked lighting fixture is located within the area; and

keeping the second highest ranked one in the networked lighting group if said illuminated lighting element is determined to be located within the area, or removing the second highest ranked lighting fixture from the networked lighting group if said illuminated lighting element is determined not to be located within the area.

30. The method of claim 29, wherein sending, from the network coordinator, a wireless message instructing the second highest ranked lighting fixture to illuminate an associated lighting element comprises instructing the second highest ranked lighting fixture to cycle its lighting element through a series of on and off cycles.

31. The method of claim 29, wherein the step of determining whether the lighting element associated with the second highest ranked lighting fixture is located within the area comprises sensing, at a light sensing element associated with one of said plurality of lighting fixtures, whether an ambient light level is increased when the lighting element associated with the second highest ranked lighting fixture is illuminated.

32. The method of claim 29, wherein when light sensing element of the first highest ranked lighting fixture determines the ambient light level to have increased when the lighting element associated with the second highest ranked lighting fixture is illuminated, wherein the network coordinator keeps the second highest ranked lighting fixture in the networked lighting group.

33. The method of claim 15, wherein the network coordinator is a ZigBee coordinator and each of the plurality of lighting fixtures includes a ZigBee transceiver, communications between the plurality of lighting fixtures and the network coordinator comprising ZigBee wireless communications.

34. The method of claim 15, wherein the step of receiving, at the network coordinator, the respective wireless messages, is in response to a user input.

35. The method of claim 34, wherein the user input is a wireless message sent from an application running on a remote device.

36. The method of claim 15, wherein determining whether said illuminated lighting element is located within the area comprises a user input to the network coordinator.

37. The method of claim 36, wherein the user input comprises a button press, the button associated with a room controller or an entry station.

38. The method of claim 15, further comprising:

providing a light pulse to a lighting sensing element of an additional lighting fixture located within the area;

sending, from the additional lighting fixture, a wireless message including an identifier associated with the respective lighting fixture;

receiving, at the network coordinator, the wireless message from the additional lighting fixture; and

adding, by the network coordinator, the additional lighting fixture to the networked lighting group.

39. The method of claim 37, wherein the sending step is in response to the light pulse in addition to a registration of motion in the area by an occupancy sensing element associated with the additional lighting fixture.

40. The method of claim 15, wherein after determining the highest ranked one is located within the area, activating an automated grouping process comprising:

sending, from the network coordinator, a wireless message to the highest ranked one to turn off its associated lighting element;

sending, from the network coordinator, a wireless message to a next lighting fixture, the wireless message instructing the next lighting fixture to illuminate an associated lighting element;

determining whether said illuminated lighting element is located within the area by monitoring one or more light sensing elements in the one or more lighting fixtures in the networked lighting group for an increase in ambient light level in the area; and

keeping the next lighting fixture in the networked lighting group if said illuminated lighting element is determined to be located within the area, or removing the next lighting fixture from said networked lighting group if said illuminated lighting element is determined not to be located within the area.

41. The method of claim 40, wherein when the one or more of the plurality of lighting fixtures in the networked lighting group senses an increase in ambient light level, the one or more of the plurality of lighting fixtures in the networked lighting group transmits a wireless message to the network coordinator to confirm that the next lighting fixture is in the area.

42. The method of claim 40, wherein when the one or more of the plurality of lighting fixtures in the networked lighting group does not senses an increase in ambient light level, the one or more of the plurality of lighting fixtures in the networked lighting group does not transmit a wireless message to the network coordinator.

43. The method of claim 42, wherein when the network coordinator does not receive a wireless message for a predetermined period of time, the network coordinator removes the next lighting fixture from said networked lighting group.

44. The method of claim 40, wherein when the one or more of the plurality of lighting fixtures in the networked lighting group does not senses an increase in ambient light level, the one or more of the plurality of lighting fixtures in the networked lighting group transmits a wireless message to the network coordinator to confirm that the next lighting fixture is not in the area.

45. The method of claim 40, wherein the automated grouping process is repeated, as necessary, until all of the plurality of lighting fixtures in the area are identified and included in the networked lighting group.

46. The method of claim 45, wherein at the conclusion of the automated grouping process, the network coordinator transmits a wireless message to all of the lighting fixtures in the network lighting group to illuminate their light elements in unison.

47. The method of claim 40, wherein the automated grouping process is activated by one of a user activated push button, a key press, or a data entry feature on an entry station or via a remote device.