LED lighting control apparatus and method based on visible light communication

• US 8,957,603 B2
• Filed: 03/11/2013
• Issued: 02/17/2015
• Est. Priority Date: 03/12/2012
• Status: Expired due to Fees

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Kim, You-Jin, Kang, Tae-Gyu, Kim, Hyun-Jong, Kim, In-Su, Kim, Dae-Ho, Jang, Il-Soon, Jeong, Jin-Doo, Lim, Sang-Kyu, Park, Seong-Hee
• Primary Examiner(s): Owens, Douglas W
• Assistant Examiner(s): Kaiser, Syed M
• Application Number:
  US13/793,769
• Publication Number:
  US 20130234607A1
• Time in Patent Office: 708 Days
• Field of Search: 314/291, 314/294, 314/158, 348/148
• US Class Current: 315/294
• CPC Class Codes: H05B 45/10 Controlling the intensity of the light
• 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: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

Disclosed herein is an LED lighting control apparatus and method based on visible light communication. The LED lighting control apparatus includes lighting information collection means for collecting status information about lighting means and environmental information about surroundings of the lighting means, and transmitting the collected information to lighting control means. The lighting information collection means includes a visible light reception processing unit for receiving the status information about the lighting means contained in a visible light signal emitted from the lighting means, a lighting information analysis unit including a plurality of environmental information sensors for detecting the environmental information about the surroundings of the lighting means, the lighting information analysis unit analyzing the environmental information detected by the environmental information sensors, and a lighting information control unit for collecting the status information and the analyzed environmental information and transmitting the collected information to the lighting control means.

Claims

1. A Light-Emitting Diode (LED) lighting control apparatus having a plurality of lighting means controlled based on visible light communication, the apparatus comprising:

a lighting information collection means configured to collect status information about a lighting means and environmental information about surroundings of the lighting means, and to transmit the collected information to a lighting control means which is configured to control the lighting means,

wherein the lighting information collection means comprises;

a visible light reception processing unit configured to receive a modulated visible light signal emitted from an LED light source module of the lighting means, the modulated visible light signal being modulated with data comprising the status information;

the visible light reception processing unit being further configured to demodulate the received modulated visible light signal to thereby produce the data comprising the status information;

a lighting information analysis unit including a plurality of environmental information sensors which detect the environmental information about the surroundings of the lighting means, the lighting information analysis unit configured to analyze the environmental information detected by the environmental information sensors; and

a lighting information control unit configured to collect the status information about the lighting means and the analyzed environmental information and to transmit the collected information to the lighting control means.

2. The LED lighting control apparatus of claim 1, wherein the visible light reception processing unit is further configured to demodulate the received modulated visible light signal which is modulated using ON/OFF signals.

3. The LED lighting control apparatus of claim 1, wherein the lighting information analysis unit analyzes variations in a status of the surroundings of the lighting means in real time by detecting one or more of pieces of environmental information corresponding to temperature, humidity, illuminance, motions, and an occurrence of a fire in the surroundings using the environmental information sensors.

4. The LED lighting control apparatus of claim 1, wherein the lighting information collection means further comprises:

a self-charging unit for converting the visible light signal emitted from the lighting means into electrical energy and then supplying power to the lighting information collection means;

a visible light transmission processing unit for transmitting a control signal for the lighting information control unit via a visible light-emitting unit;

an infrared light transmission processing unit for transmitting a control signal for the lighting information control unit via an infrared light-emitting unit;

a beacon signal transmission processing unit for detecting an LED beacon signal from patterns of light emitted from the lighting means; and

a Radio Frequency (RF) transceiver unit for transmitting a control signal for the lighting information control unit and converting the control signal into an RF signal.

5. The LED lighting control apparatus of claim 4, wherein the lighting information collection means further comprises:

a host interface unit for providing an interface with a host device;

a power circuit unit for receiving power supplied by the host device; and

a battery unit for receiving the power supplied by the self-charging unit.

6. The LED lighting control apparatus of claim 1, wherein the lighting means comprises:

the LED light source module having a status information sensor for detecting the status information about the lighting means; and

a control module for controlling the LED light source module.

7. The LED lighting control apparatus of claim 6, wherein the control module comprises:

an image sensor circuit unit for receiving an image signal output from an image sensor of the LED light source module;

a beacon signal detection unit for detecting an LED beacon signal from the image signal;

a visible light signal reception unit for receiving the visible light signal emitted from the LED light source module;

an RF transceiver unit for converting the visible light signal into an RE signal; and

an ID setting unit for setting unique ID information of the LED light source module.

8. The LED lighting control apparatus of claim 7, wherein the control module comprises:

the lighting information analysis unit for analyzing the status information detected by the status information sensor;

a lighting control unit for controlling transmission and reception of an LED beacon signal and the status information based on unique ID information of the LED light source module, or controlling the LED light source module based on a control signal transmitted from the lighting control means; and

a lighting communication processing unit for processing transmission and reception of the status information based on the unique ID information or of the control signal.

9. The LED lighting control apparatus of claim 6, wherein the status information sensor includes information corresponding to any one of an ON/OFF status, a temperature, a voltage, a current, an illuminance, and a color of lighting.

10. The LED lighting control apparatus of claim 1, wherein if a plurality of lighting means are provided, the lighting means are mutually connected via an integrated control communication network using a lighting control bus.

11. The LED lighting control apparatus of claim 1, wherein the lighting control means generates a control command signal for ON/OFF operations, illuminance, color, group or individual control of the lighting means, based on the status information and the analyzed environmental information, and transmits the control command signal, thus controlling the lighting means.

12. A Light-Emitting Diode (LED) lighting control method for a plurality of lighting means which are controlled based on visible light communication, the method comprising:

receiving a modulated visible light signal emitted from an LED light source module of a lighting means, the modulated visible light signal being modulate with data comprising status information;

demodulating the received modulated visible light signal to thereby produce the data comprising the status information;

analyzing environmental information detected by environmental information sensors for detecting environmental information about surroundings of the lighting means; and

collecting the status information and the analyzed environmental information, transmitting the collected information to a lighting control means, and then enabling the lighting means to be controlled by the lighting control means.

13. The LED lighting control method of claim 12, further comprising receiving the status information about the lighting means such that one or more of pieces of information corresponding to an ON/OFF status, a temperature, a voltage, a current, an illuminance, and a color of the lighting means are received by a status information sensor provided in the lighting means.

14. The LED lighting control method of claim 12, wherein the analyzing the environmental information detected by the environmental information sensors for detecting environmental information about surroundings of the lighting means is configured to detect one or more of pieces of environmental information corresponding to temperature, humidity, illuminance, motions, and an occurrence of a fire in the surroundings using the environmental information sensors, thus analyzing variations in a status of the surroundings of the lighting means in real time.

15. The LED lighting control method of claim 12, wherein the collecting the status information and the analyzed environmental information, transmitting the collected information to lighting control means, and then enabling the lighting means to be controlled by the lighting control means is configured such that the lighting control means generates a control command signal for ON/OFF operations, illuminance, color, group or individual control of the lighting means, based on the status information and the analyzed environmental information, and transmits the control command signal, thus controlling the lighting means.