POWER LINE COMMUNICATION SYSTEM WITH DC POWER BUS

• US 20110134976A1
• Filed: 11/18/2010
• Published: 06/09/2011
• Est. Priority Date: 11/19/2009
• Status: Abandoned Application

• Current Assignee: Thales SA
• Original Assignee: Thales SA
• Inventors: SARTENAER, Thierry, FOSSION, Marc
• Application Number:
  US12/948,839
• Publication Number:
  US 20110134976A1
• Time in Patent Office: Days
• US Class Current: 375/222
• CPC Class Codes: H04B 2203/547 via DC power distribution
• CPC Class Codes: H04B 2203/5483 using coupling circuits
• CPC Class Codes: H04B 3/548 the power on the line being DC arrangements for feeding power H04L12/10; extracting feeding power from signals H04L25/02
• CPC Class Codes: H04B 3/56 Circuits for coupling, blocking, or by-passing of signals

Abstract

A power line communication system with DC power bus includes a power supply source, a capacitive smoothing means for smoothing the electrical voltage delivered by the source to the bus, at least one distribution box supplied by the bus and dedicated to at least one item of equipment, and an electrical current coupler of high-frequency data-carrying signals and a data modem, which are attached to the distribution box and to at least one supply line of an item of equipment.

Claims

1. A power line communication system with DC power bus, comprising:

a power supply source;

a capacitive smoothing means for smoothing the electrical voltage delivered by said source to said bus; and

at least one distribution box supplied by said bus and dedicated to at least one item of equipment, wherein

the system further comprises an electrical current coupler of high-frequency data-carrying signals and a data modem, which are attached to said distribution box and to at least one respective supply line of said at least one item of equipment, and

the DC power bus is adapted for operating in differential mode, and comprises an electrical voltage coupler of high-frequency data-carrying signals and a data modem, which are disposed on each supply line downstream of said electrical current coupler and upstream of said at least one item of equipment.

2. The system according to claim 1, wherein the data modems are adapted for processing the data-carrying signals by modulation of the spectrum and/or of the instant of emission.

3. The system according to claim 1, wherein the data modems are adapted for applying techniques of temporal and/or frequency diversity to the data-carrying signals.

4. The system according to claim 1, wherein the data modems are adapted for processing the data-carrying signals by applying an error-correcting code and/or an automatic retransmission to the data-carrying signals.

5. The system according claim 2, wherein the data modems are adapted for performing an adaptive processing of said processing of the data-carrying signals carried out by the data modems.

6. The system according to claim 1, wherein a respective supply line of an item of equipment comprises an electrical current coupler of high-frequency data-carrying signals and a data modem, and an electrical voltage coupler of high-frequency data-carrying signals and a data modem.

7. The system according to claim 1, wherein said electrical voltage coupler comprises an electrical voltage transformer and one or two coupling capacitors forming a galvanic isolation between said attached modem and said supply line of said power bus.

8. The system according to claim 1, wherein said electrical current coupler is furnished with a primary circuit comprising two uninterrupted copper tracks.

9. The system according to claim 1, further comprising another electrical current coupler in redundancy and a redundant data modem attached to said other electrical current coupler.

10. The system according to claim 1, wherein said current coupler is furnished with secondary windings adapted for measuring the direct current consumed on the primary circuit by a technique of fluxgate type.

11. An aircraft comprising a system according to claim 1.

12. An spaceship comprising a system according to claim 1.

13. A terrestrial vehicle comprising a system according to claim 1.

14. A naval vehicle comprising a system according to claim 1.