Power line communication system, device and method

• US 7,675,408 B2
• Filed: 06/26/2008
• Issued: 03/09/2010
• Est. Priority Date: 02/14/2001
• Status: Expired due to Fees

• Current Assignee: Current Technologies LLC (Pattern Inc.)
• Original Assignee: Current Technologies LLC (Pattern Inc.)
• Inventors: Kline, Paul A.
• Primary Examiner(s): GOINS, DAVETTA WOODS
• Application Number:
  US12/147,007
• Publication Number:
  US 20080266134A1
• Time in Patent Office: 621 Days
• Field of Search: 340/538, 340/538.11, 340/538.15, 340/538.16, 340/310.11, 340/310.12, 340/310.16, 340/310.17, 370/351, 370/401, 370/406, 370/422, 375/257, 375/258, 455/402
• US Class Current: 340/538
• CPC Class Codes: G02B 6/4246 Bidirectionally operating package structures
• CPC Class Codes: G02B 6/483 Installation of aerial type
• CPC Class Codes: H02G 11/02 using take-up reel or drum
• CPC Class Codes: H04B 2203/5416 by adding signals to the wave form of the power source
• CPC Class Codes: H04B 2203/5441 Wireless systems or telephone
• CPC Class Codes: H04B 2203/5445 Local network
• CPC Class Codes: H04B 2203/5483 using coupling circuits
• CPC Class Codes: H04B 2203/5487 cables
• CPC Class Codes: H04B 3/54 Systems for transmission via power distribution lines
• CPC Class Codes: H04B 3/542 the information being in digital form
• CPC Class Codes: H04B 3/56 Circuits for coupling, blocking, or by-passing of signals

Abstract

A signal is received from a first portion of a power line via a connection to the power line and at least a portion of the signal is converted to a non-electrically conducting signal. The non-electrically conducting signal may be communicated to a non-electrically conductive communication path. In this manner, the non-electrically conducting signal may have properties that do not provide imminent danger from human contact.

Claims

1. A device for communicating over a power line having a voltage greater than one thousand volts, the power line forming part of a power distribution system that supplies power to one or more customer premises and wherein each of the one or more customer premises receives power via a low voltage power line that is electrically connected to a distribution transformer, the device comprising:

a capacitive coupler configured to couple data to and from the power line;

a first modem configured to communicate data over the power line via said coupler;

a downstream interface communicatively coupled to said first modem and configured to communicate with one or more utility devices configured to communicate measured utility data; and

wherein said coupler, said first modem, and said downstream interface are configured to provide at least part of a data path between the power line and one or more utility devices at one or more customer residences to thereby bypass the distribution transformer.

2. The device of claim 1, wherein said downstream interface comprises a wireless transceiver configured to communicate with the one or more utility devices.

3. The device of claim 2, wherein said wireless transceiver is further configured to provide wireless communications with one or more user devices.

4. The device of claim 2, wherein the one or more utility meters each includes a wireless transceiver and communications via said wireless transceiver of said downstream interface bypass the external low voltage power lines.

5. The device of claim 2, wherein said wireless transceiver is configured to form a wireless local area network with the one or more utility meters.

6. The device of claim 1, further comprising a routing device in communication with said first modem.

7. The device of claim 1, further comprising a routing device in communication with said first modem and wherein said routing device is configured to monitor usage data.

8. The device of claim 1, further comprising a routing device in communication with said first modem and wherein said routing device is configured to perform throughput control functions.

9. The device of claim 1, further comprising a routing device in communication with said first modem and wherein said routing device is configured to match data packets with destinations.

10. The device of claim 1, wherein said first modem is configured to communicate over the power line via time division multiplexing.

11. The device of claim 1, wherein said downstream interface comprises a second modem configured to be communicatively coupled to a low voltage power line for communications with one or more utility devices.

12. The device of claim 11, wherein said second modem is configured to communicate orthogonal frequency division multiplexed (OFDM) data signals over the low voltage power line.

13. The device of claim 11, wherein said first modem and said second modem are configured to communicate with remote devices via wideband signals.

14. The device of claim 11, wherein said second modem is configured to communicate over the low voltage power line using a plurality of carriers and wherein at least some of said carriers are between two megahertz and twenty-four megahertz.

15. The device of claim 1, wherein said downstream interface comprises a second modem configured to be communicatively coupled to a twisted pair conductor set for communications with one or more utility devices.

16. The device of claim 1, wherein said downstream interface comprises a transceiver configured to be communicatively coupled to a fiber optic conductor for communications with one or more utility devices.

17. The device of claim 1, wherein said downstream interface comprises a second modem configured to be communicatively coupled to a coaxial cable for communications with one or more utility devices.

18. The device of claim 1, wherein said first modem is communicatively coupled to said capacitive coupler via a filter.

19. The device of claim 1, wherein said downstream interface is configured to receive utility data.

20. The device of claim 1, wherein said downstream interface is configured to receive utility data via a wireless link.

21. The device of claim 1, wherein said downstream interface is configured to receive utility data via a low voltage power line.

22. The device of claim 1, wherein said downstream interface is configured to communicate video data.

23. The device of claim 1, wherein said downstream interface is configured to communicate IP telephony data.

24. A device for communicating over a power line having a voltage greater than one thousand volts, the power line forming part of a power distribution system that supplies power to a plurality of customer premises and wherein each of the plurality customer premises receives power via a low voltage power line that is electrically connected to a distribution transformer, the system comprising:

a capacitive coupler configured to couple data to and from the power line;

a first modem configured to communicate data over the power line via said coupler;

a second modem configured to communicate with one or more utility devices configured to communicate measured utility data of one or more associated customer premises;

a routing device communicatively coupled to said first modem and said second modem; and

wherein said coupler, said first modem, and said second modem are configured to provide at least part of a data path between the power line and one or more utility devices associated with one or more customer premises to thereby bypass the distribution transformer.

25. The device of claim 24, wherein said second modem comprises a wireless transceiver configured to communicate with one or more utility devices having a wireless modem.

26. The device of claim 25, wherein said wireless transceiver is configured to provide wirelessly communications via an IEEE 802.11 protocol.

27. The device of claim 25, wherein the remote wireless modems are disposed at the one or more utility devices and communications via said wireless transceiver bypass the external low voltage power lines.

28. The device of claim 25, wherein said wireless transceiver is configured to form a wireless local area network with the one or more remote wireless modems.

29. The device of claim 24, wherein said routing device is configured to monitor usage data.

30. The device of claim 24, wherein said routing device is configured to perform throughput control functions.

31. The device of claim 24, wherein said routing device is configured to match data packets with destinations.

32. The device of claim 24, wherein said first modem is configured to communicate over the power line via time division multiplexing.

33. The device of claim 24, wherein said second modem is configured to be communicatively coupled a low voltage power line for communications with the one or more utility devices.

34. The device of claim 33, wherein said second modem is configured to communicate OFDM data signals over the low voltage power line.

35. The device of claim 24, wherein said first modem and said second modem are configured to communicate with remote devices via wideband signals.

36. The device of claim 24, wherein said second modem is configured to communicate over the low voltage power line using a plurality of carriers and wherein at least some of said carriers are between two megahertz and twenty-four megahertz.

37. The device of claim 24, wherein said second modem is configured to be communicatively coupled to a twisted pair conductor set for communications with the one or more utility devices.

38. The device of claim 24, wherein said second modem is configured to be communicatively coupled to a fiber optic conductor for communications with the one or more utility devices.

39. The device of claim 24, wherein said second modem is configured to be communicatively coupled to a coaxial cable for communications with the one or more utility devices.

40. The device of claim 24, wherein said first modem is communicatively coupled to said capacitive coupler via a filter.

41. The device of claim 24, wherein said second modem is configured to receive utility data.

42. The device of claim 24, wherein said second modem is configured to receive utility data via a wireless link.

43. The device of claim 24, wherein said second modem is configured to receive utility data via a low voltage power line.

44. The device of claim 24, wherein said second modem is configured to communicate video data.

45. The device of claim 24, wherein said second modem is configured to communicate IP telephony data.

46. A method of communicating over a power line having a voltage greater than one thousand volts, the power line forming part of a power distribution system that supplies power to a plurality of customer premises and wherein each of the plurality customer premises receives power via a low voltage power line that is electrically connected to a distribution transformer, the method comprising:

capacitively receiving first data in a first data signal from the power line, wherein the first data signal comprises a wideband signal;

demodulating the first data signal to provide a first data packet;

matching the first data packet with a destination;

modulating one or more carriers with the first data to provide a second data signal;

transmitting the second data signal to a first remote utility device disposed at a customer premises;

receiving second data from a remote utility device;

modulating one or more carriers with the second data to form a third data signal; and

capacitively coupling the third data signal to the power line.

47. The method of claim 46, further comprising establishing a wireless local area network with a plurality of remote transceivers.

48. The method of claim 46, further comprising monitoring data usage.

49. The method of claim 46, further comprising controlling data throughput.

50. The method of claim 46, wherein said transmitting the second data signal comprises wireless transmitting the second data.

51. The method of claim 46, wherein said transmitting the second data signal comprises wirelessly transmitting the second data signal via an IEEE 802.11 protocol.

52. The method of claim 46, wherein the third data signal is coupled to the power line according to a time division multiplexing scheme.

53. The method of claim 46, wherein said transmitting comprises transmitting the second data signal over a low voltage power line.

54. The method of claim 46, wherein the second data signal comprises an orthogonal frequency division multiplexed data signal.

55. The method of claim 46, wherein said transmitting comprises transmitting the second data signal over a twisted pair conductor set.

56. The method of claim 46, wherein said transmitting comprises transmitting the second data signal over a fiber optic conductor.

57. The method of claim 46, wherein said transmitting comprises transmitting the second data signal over a coaxial cable.

58. The method of claim 46, wherein the first data signal comprises an orthogonal frequency division multiplexed data signal.

59. The method of claim 46, further comprising providing authorization functions.

60. The method of claim 46, wherein said second data comprises utility usage data.

61. The method of claim 46, wherein the first data comprises Internet Protocol (IP) telephony data.

62. The method of claim 46, wherein the first data comprises video data.

63. The method of claim 46, wherein the first data comprises video conferencing data.