METHOD AND SYSTEM FOR CONTROLLING LED WITH POWER LINE CARRIER

• US 20090171510A1
• Filed: 12/31/2008
• Published: 07/02/2009
• Est. Priority Date: 01/02/2008
• Status: Active Grant

• Current Assignee: Epistar Corporation (Ennostar, Inc.)
• Original Assignee: Intematix Technology Center Corp. (Intematix Corporation)
• Inventors: HU, YU-CHOU
• Granted Patent: US 7,961,090 B2
• Time in Patent Office: Days
• US Class Current: 700/292
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 47/155 Coordinated control of two or more light sources
• CPC Class Codes: H05B 47/185 via power line carrier transmission
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A method and a system for controlling LED with power line carrier are disclosed. The system contains a host controller, an electric power conductor, and at least a luminous device, and the luminous device further containing an environmental data collection module. The method comprises the steps of providing a power line carrier module to both the host controller and the luminous devices; the luminous devices detecting a set of environmental data by the environmental data collection module; the luminous devices transmitting the set of environmental data to the host controller; the host controller recording and analyzing the set of environmental data; and the host controller sending a control signal to the luminous devices according to the analysis. Therein the control signal and the set of environmental data are transmitted by the power line carrier module through the electric power conductor.

Claims

1. A system for controlling LED with power line carrier, comprising:

at least a luminous device for illumination, containing

a terminal microprocessor for data and signals processing and calculation;

a terminal power line carrier module, which is coupled with the terminal microprocessor, for data modulation and demodulation;

a terminal power supply module, which is coupled with the terminal microprocessor, for providing static power supply;

at least a LED, which is coupled with the terminal microprocessor and the terminal power supply module;

at least a LED driving module, which is coupled between the terminal microprocessor and the LED, and between the terminal power supply module and the LED, for regulating electric current and voltage, protecting the LED, and controlling the LED;

a host controller for controlling the luminous device, containing

a host microprocessor for signals and data processing and control;

a host power line carrier module, which is coupled with the host microprocessor, for data and signals modulation and demodulation;

a host power supply module, which is coupled with the host microprocessor, for providing static power supply;

a communication and control module, which is coupled with the host microprocessor, for providing user with control capability; and

an electric power conductor, which is connecting with the terminal power line carrier module, the terminal power supply module, the host power line carrier module, and the host power supply module, for carrying electric power and signals;

whereby the data and signal transmitting between the host controller and the luminous device are all through the electric power conductor, and do not need any extra transmission line.

2. The system as in claim 1, wherein the terminal power line carrier module uses DPSK modulation scheme to modulate and demodulate the data and signals transmitted through the electric power conductor.

3. The system as in claim 1, wherein the color of the light emitting diodes contain red, yellow, blue, green, white, infrared, or ultraviolet.

4. The system as in claim 1, wherein the LED driving modules uses pulse width modulation (PWM) to regulate the voltage and electric current, and to protect the light emitting diodes from improper power input.

5. The system as in claim 1, wherein the electric power conductor is a power line.

6. The system as in claim 1, wherein the host power line carrier module uses DPSK modulation scheme to modulate and demodulate the data and signals transmitted through the electric power conductor.

7. The system as in claim 1, wherein the luminous device further containing

an environmental data collection module, which is coupled with the terminal microprocessor, for sensing environmental circumstances.

8. The system as in claim 7, wherein the environmental data collection module further containing a luminance sensor, a visibility sensor, an object sensor, a voice sensor, and a power consumption sensor.

9. The system as in claim 1, wherein the luminous device further containing

an address setting module, which is coupled with the terminal microprocessor, for setting device address of the luminous device.

10. The system as in claim 1, wherein the communication and control module further containing

an operating module, for luminous device control by user.

11. The system as in claim 7, wherein the communication and control module further containing

a display unit, for displaying the data collected by the environmental data collection module.

12. The system as in claim 7, wherein the communication and control module further containing

a storage unit, for storing the data collected by the environmental data collection module.

13. The system as in claim 1, wherein the host controller further containing

a hardware port, which is coupled with the host microprocessor, for connecting with a computer, and the computer is for analysis, monitoring, and control.

14. The system as in claim 13, wherein the hardware port is a USB port or an RS232 port.

15. A method for controlling LED with power line carrier, applicable to a system for controlling LED, wherein the system contains a host controller, an electric power conductor, and at least a luminous device, and the luminous device further containing an environmental data collection module, comprising:

providing a power line carrier module to both the host controller and the luminous devices;

the luminous devices detecting a set of environmental data by the environmental data collection module;

the luminous devices transmitting the set of environmental data to the host controller, wherein the set of environment data is sent by the power line carrier module through the electric power conductor;

the host controller recording and analyzing the set of environmental data; and

the host controller sending a control signal to the -luminous devices according to the analysis, wherein the control signal is sent by the power line carrier module through the electric power conductor.

16. The method as in claim 15, wherein the electric power conductor is a power line.

17. The method as in claim 15, wherein the set of environmental data contains an illumination data, a visibility data, an object sensing data, a voice sensing data, and a power consumption data.

18. The method as in claim 15, wherein the luminous device further comprises an address setting module for setting device address of the luminous device.