Light source luminaire system light element control

• US 9,173,276 B2
• Filed: 05/03/2013
• Issued: 10/27/2015
• Est. Priority Date: 01/15/2008
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Van Der Veen, Geert Willem, Deixler, Peter, Jalink, Cornelis Jojakim, Stravers, Paul
• Primary Examiner(s): A, Minh D
• Application Number:
  US13/886,314
• Publication Number:
  US 20130234603A1
• Time in Patent Office: 907 Days
• Field of Search: 315/291, 315/307, 315/312, 315/200.R
• US Class Current: 1/1
• CPC Class Codes: H05B 47/18 via data-bus transmission

Abstract

Disclosed is a light source having a plurality of light elements and a control system for controlling the light elements. The control system includes a plurality of light element controllers, each connected to a respective light element, and arranged to obtain light element data; and a bus interface, which is connected to the light element controllers via a light source bus. The bus interface provides the light element controllers with a general command, and the light element controllers generate light element drive signals on basis of the general command and the light element data.

Claims

1. A plurality of light sources each having a plurality of light elements and a control system for controlling said plurality of light elements each of, said light sources comprising:

a plurality of light element controllers, each of said light element controllers connected to a corresponding light element, and a light element driver arranged to provide said corresponding light element with a light element drive signal based on a lighting feedback signal and a general command;

a bus interface, said bus interface connected to said plurality of light element controllers via a light source bus, wherein said bus interface is arranged to provide said light element controllers with said general command and has a bus interface tag interpreter;

a luminaire controller configured to communicate with a room controller and having a symbol tag interpreter, the luminaire controller in communication with a luminaire bus, the bus interface in communication with the luminaire bus;

a light sensor, said light sensor connected to said light source bus, wherein said light sensor is arranged to provide said light source bus with said light feedback signal based on an output of said corresponding light elements;

the light feedback signal includes data representative of a cumulative total output of the plurality of light elements;

each of the plurality of the light element controllers operable to extract contributions from a singular of the plurality of light elements.

2. The light source of claim 1, where said light elements are solid state light elements.

3. The light source of claim 2, wherein said light feedback signal is based on the temperature and color of said output of said light elements.

4. The light source of claim 3, wherein said general command is based on a lighting setting, said lighting setting comprised of a temperature value and a color value.

5. The light source of claim 4, wherein said light element drive signal is varied based on a difference in said temperature and said color of said output of said light elements and said temperature and said color of said light setting.

6. The light source of claim 1, wherein each of said plurality of light element controllers has access to one or more optical properties of each said lighting element, and wherein each of said plurality of light element controllers is operable to modify a light element drive signal based on said one or more optical properties of one or more of said lighting elements.

7. A plurality of light sources each having a plurality of light elements and a control system for controlling said plurality of light elements, each of the light sources comprising:

a plurality of light element controllers with memory, each said light element controller connected to a corresponding said light element, wherein each said light element has one or more optical properties, and wherein each light element controller has access to said one or more optical properties of said plurality of light elements;

a bus interface, said bus interface connected to said plurality of light element controllers via a light source bus, wherein said bus interface is arranged to provide said light element controllers with a general command, wherein said general command is indicative of a lighting setting;

the bus interface having a bus interface tag interpreter;

a luminaire controller configured to communicate with a room controller in communication with a luminaire bus, the bus interface of each light source in communication with the luminaire bus;

a light sensor, said light sensor connected to said light source bus, wherein said light sensor is arranged to provide said light source bus with a light feedback signal based on a total output of said plurality of light elements,

wherein said plurality of light element controllers provides each said corresponding light element with a light element drive signal based on said general command and said light feedback signal;

the individual light output of each of the plurality of light elements extracted from the light feedback signal.

8. The light source of claim 7, wherein said light feedback signal is based on a temperature and color of said total output of said plurality of light elements.

9. The light source of claim 8, wherein said general command is an ideal light element temperature setting and an ideal light element color setting for each said plurality of light elements.

10. The light source of claim 7, wherein each said light drive element signals is based on said general command, said light feedback signal, and at least one of said one or more properties of said plurality of light elements.

11. The light source of claim 7, wherein said general command includes a first instruction and a second instruction, and wherein at least one of said plurality of light element controllers determines whether to process a said first instruction based on said second instruction.

12. The light source of claim 11, wherein a first of said plurality of light element controllers processes said second instruction based on said first instruction, and wherein a second of said plurality of light element controllers ignores said second instruction based on said first instruction.

13. A light source having a plurality of light elements and a control system for controlling said plurality of light elements, the light source comprising:

a plurality of light element controllers, each said light element controller connected to a corresponding said light element, and wherein each of said plurality of light element controllers provides said corresponding light element with a light element drive signal;

each of the plurality of light controllers having a tag interpreter;

a bus interface having a bus interface tag interpreter, wherein said bus interface is connected to said plurality of light element controllers via a light source bus, wherein said bus interface receives a lighting configuration, and wherein said bus interface is arranged to provide said light element controllers with a lighting command based on said light configuration;

a light sensor, said light sensor connected to said light source bus, wherein said light sensor is arranged to provide a light feedback signal based on the sum of the output contributions of said plurality of light elements; and

at least one light signal processor, wherein said at least one said light signal processor calculates adjustments to said lighting command based on said light feedback signal and said light configuration, the light feedback signal read by each of the plurality of light element controllers, each of the particular light element controller of the plurality of light element controllers operable to extract an individual contribution value for the light element which is connected to the particular light element controller;

a sync generator interposed between the sensor interface and the plurality of light element controllers.

14. The light source of claim 13, wherein said bus interface includes one of said at least one light signal processors.

15. The light source of claim 13, wherein each of said plurality of light element controllers includes one of said light signal processors.

16. The light source of claim 13, wherein each at least one said light signal processor has access to one or more optical properties of each said light elements, and wherein said adjustments to said lighting command are based on said optical properties.

17. The light source of claim 13, wherein said general command includes a first instruction and a second instruction, and wherein at least one of said plurality of light element controllers determines whether to process a said first instruction based on said second instruction.

18. The light source of claim 17, wherein a first of said plurality of light element controllers processes said second instruction based on said first instruction, and wherein a second of said plurality of light element controllers ignores said second instruction based on said first instruction.

19. A light source having a plurality of light elements and a control system for controlling said plurality of light elements, the control system comprising:

a plurality of light element controllers, each connected to a respective one of said light elements and arranged to obtain light element data;

a bus interface connected to said light element controllers via a light source bus and having a bus interface tag interpreter;

wherein said bus interface is arranged to provide said light element controllers with a general command and wherein said light element controllers are arranged to generate light element drive signals on basis of the general command and said light element data;

a sensor interface for detecting properties of the light elements by sensing their light output, the sensor interface being connected to the light source bus and configured to provide a sensor interface signal carrying data about said properties to the light source bus;

said bus interface tag interpreter is tagged with at least one symbol tag, the general command each include at least one symbol tag of a plurality of types of symbol tags;

said bus interface tag interpreter further includes a symbol tag comparator arranged to compare a symbol tag received in said general command with said at least one symbol tag that the general command is tagged with, and wherein said symbol tag interpreter is arranged to accept the general command if the symbol tag comparator finds a symbol tag match.

20. A light source according to claim 19 wherein said light element controllers are individually switchable between on and off states.