LIGHTING SYSTEM AND METHOD FOR CONTROLLING THE SAME

• US 20120098445A1
• Filed: 12/29/2011
• Published: 04/26/2012
• Est. Priority Date: 03/25/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Taehoon, PARK, Heegu, Bang, Junwan
• Granted Patent: US 8,531,135 B2
• Time in Patent Office: Days
• US Class Current: 315/193
• CPC Class Codes: H05B 47/19 via wireless transmission

Abstract

A lighting system which automatically assigns a unique address to each lighting device and controls each lighting device assigned the unique address is disclosed. The lighting system may include a plurality of lighting apparatuses, at least one bridge coupled to the plurality of lighting apparatuses, and a lighting controller coupled to the at least one bridge for controlling the lighting apparatuses. One of the at least one bridge or the controller may generate address data for assigning an address to one of the plurality of lighting apparatuses. The plurality of lighting apparatuses may include an LED module, a connection circuit configured to control a connection between the at least one bridge and the plurality of lighting apparatuses, and a controller configured to control the connection circuit based on the address.

Claims

1. A lighting system comprising:

a plurality of lighting apparatuses;

at least one bridge devices coupled to the plurality of lighting apparatuses; and

a lighting controller coupled to the at least one bridge devices for controlling the lighting apparatuses, wherein one of the at least one bridge devices or the lighting controller generates address data for assigning an address to one of the plurality of lighting apparatuses,

wherein the plurality of lighting apparatuses include

an LED module;

a connection circuit configured to control a connection between the at least one bridge devices and the plurality of lighting apparatuses; and

a controller configured to control the connection circuit based on the address.

2. The lighting system of claim 1, wherein the connection circuit includes:

an input port to receive the data from the bridge device;

an output port to relay the address data to another lighting apparatus; and

a switch to electrically connect or disconnect the connection between the input port and the output port.

3. The lighting system of claim 2, wherein at least two data lines are connected between the input port and the output port, and the switch is positioned to create a short circuit between the data lines at the output port to disconnect the connection between the input and output connectors.

4. The lighting system of claim 2, wherein the controller controls the switch to electrically connect or disconnect the connection based on the address data.

5. The lighting system of claim 2, wherein the controller determines whether the address is needed, and controls the switch to disconnect the connection to prevent the address data from being transferred to a subsequent lighting apparatus if the address data is needed and controls the switch to connect the connection to transfer the address data to a subsequent lighting apparatus if the address is not needed.

6. The lighting system of claim 1, wherein the bridge device is configured as a master and the plurality of lighting apparatuses are configured as a slave.

7. The lighting system of claim 1, wherein the bridge device is connected in series to the lighting apparatuses according to a RS-485 communication protocol.

8. The lighting system of claim 7, wherein the plurality of lighting apparatuses further include a driver configured to transmit and decode data according to the RS-485 communication protocol.

9. The lighting system of claim 2, wherein the bridge device transmits information corresponding to the assigned address to the lighting controller through the gateway.

10. The lighting system of claim 2, wherein the bridge device is connected to the gateway according to a ZigBee communication protocol and the gateway is connected to the lighting controller according to a TCP/IP protocol.

11. A lighting system comprising:

a first lighting apparatus;

a second lighting apparatus connected to the first lighting apparatus in series; and

a bridge device coupled to the first lighting apparatus in series and configured to send an address to the first and second lighting apparatuses;

wherein the first lighting apparatus includes

a first light source,

a first input connector coupled to the bridge device and a first output connector, and

a first control circuit to control a connection between the input connector and the output connector, and

wherein the second lighting apparatus includes

a second light source,

a second input connector coupled to the output connector of the first lighting apparatus and a second output connector, and

a second control circuit to control a connection between the second input connector and the second output connector,

wherein, after the first control circuit disconnects the connection between the first input and output connectors, the bridge device sends an address to the first lighting device, and

the first control circuit determines whether an assignment of the address is needed for the first lighting apparatus, and

if the assignment is not needed, the first control circuit connects the first input and output connectors to allow the address to be sent to the second control circuit.

12. The lighting system of claim 11, wherein the connector circuits include a switch or relay.

13. The lighting system of claim 12, wherein the switch or relay is positioned at the output connectors and configured to short circuit a data line at the output connector to disconnect the connection between the input and output connectors.

14. The lighting system of claim 11, wherein if the assignment is needed, the first control circuit assigns the first address to the first lighting apparatus.

15. The lighting system of claim 11, further comprising a lighting controller coupled to the bridge device and configured to control the first lighting apparatus based on the address assigned to the first lighting apparatus.

16. The lighting system of claim 15, wherein the bridge device is connected in series to the lighting apparatuses according to a RS-485 communication protocol.

17. The lighting system of claim 15, further comprising a gateway communicatively coupled between the bridge device and the lighting controller, wherein the bridge device transmits the address for the lighting apparatuses to the lighting controller through the gateway.

18. The lighting system of claim 17, wherein the bridge device is connected to the gateway according to a ZigBee communication protocol and the gateway is connected to the lighting controller according to a TCP/IP protocol.

19. The lighting system of claim 15, wherein the address is generated in the bridge device or the lighting controller.

20. A lighting system comprising:

a first lighting apparatus;

a second lighting apparatus connected to the first lighting apparatus in series;

a bridge device coupled to the first lighting apparatus in series; and

a lighting controller coupled to the bridge device for controlling the first and second lighting apparatuses, wherein one of the bridge device or the lighting controller generates an address for assignment to one of the plurality of lighting apparatuses,

wherein the first lighting apparatus includes

a first LED module,

a first input connector coupled to the bridge device and a first output connector, and

a first control circuit to control a connection between the input connector and the output connector, and

wherein the second lighting apparatus includes

a second LED module,

a second input connector coupled to the output connector of the first lighting apparatus and a second output connector, and

a second control circuit to control a connection between the second input connector and the second output connector,

wherein the first and second control circuits include a switch positioned at the output connectors to short circuit a data line for disconnecting the connection between the input and output connectors based on the address.