Power line communications module and method

• US 7,598,844 B2
• Filed: 05/17/2007
• Issued: 10/06/2009
• Est. Priority Date: 01/30/2006
• Status: Expired due to Fees

• Current Assignee: Current Technologies LLC (Pattern Inc.)
• Original Assignee: Current Technologies LLC (Pattern Inc.)
• Inventors: Mollenkopf, James D., Bernstein, Terry L., Corcoran, Kevin F.
• Primary Examiner(s): Edwards, Jr., Timothy
• Application Number:
  US11/750,058
• Publication Number:
  US 20070211888A1
• Time in Patent Office: 873 Days
• Field of Search: 709/223, 340/310.11, 340/31.16
• US Class Current: 340/12.32
• CPC Class Codes: G01D 4/004 Remote reading of utility meters to a fixed location
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y04S 20/30 Smart metering, e.g. specially adapted for remote reading

Abstract

A system, device and method for providing communications to a plurality of customer premises via one or more external low voltage power lines is provided. One embodiment of the system includes a power line communication device comprising a first modem configured to communicate over the one or more external low voltage power lines. The system further includes a plurality of wireless interface devices, each located at, and external to, a respective one of the plurality of customer premises. Each wireless interface device may includes a first communication module configured to communicate with the power line communication device via the external low voltage power line; and a second communication module in communication with the first communication module and configured to provide wireless communications for one or more remote devices within the respective customer premises.

Claims

1. A method using a device to provide communications to a customer premises via an external low voltage power line, wherein the device is located external to the customer premises, comprising:

receiving first data via the external low voltage power line;

wireless transmitting the first data to a first wireless device disposed at the customer premises;

wirelessly receiving second data from the first wireless device disposed at the customer premises;

transmitting the second data over the external low voltage power line;

operating in a first mode of operation in which repeating is enabled by performing the steps of;

receiving second device data communicated over an internal low voltage power line of the customer premises from a second device at the customer premises; and

transmitting the second device data over the external low voltage power line;

operating in a second mode of operation in which repeating is disabled by performing the steps of;

receiving power line data via the internal low voltage power line of the customer premises from the second device; and

not transmitting the received power line data over a power line.

2. The method of claim 1, further comprising:

receiving a command to disable repeating; and

in response to receiving said command, operating in said second mode of operation.

3. The method of claim 1, wherein the transmitted second data is received at a communication device configured to communicate over a medium voltage (MV) power line.

4. The method of claim 1, wherein the first wireless device disposed at the customer premises comprises a user device.

5. The method of claim 1, further comprising:

storing utility data in a memory; and

transmitting the utility data over the external low voltage power line.

6. The method of claim 1, wherein the first wireless device disposed at the customer premises comprises a utility meter.

7. The method of claim 1, further comprising:

determining whether the first data is to be repeated; and

said wirelessly transmitting the first data is performed only if the first data is to be repeated.

8. The method of claim 7, further comprising determining whether the first data includes a command.

9. The method of claim 1, wherein further comprising determining if the first data includes control data.

10. The method of claim 1, further comprising routing the first data prior to said wirelessly transmitting the first data.

11. The method of claim 1, further comprising:

receiving third data via the external low voltage power line; and

wireless transmitting the third data to a second wireless device disposed at the customer premises.

12. The method of claim 1, wherein the first wireless device disposed at the customer premises comprises an in-home wireless network.

13. The method of claim 1, further comprising receiving a command that includes a request to transmit utility data.

14. The method of claim 1, further comprising determining a destination for the first data prior to said wirelessly transmitting the first data.

15. The method of claim 1, wherein an electric utility meter is associated with the customer premises and the device is co-located with the meter.

16. The method of claim 1, wherein an electric utility meter having a housing is associated with the customer premises and at least a portion of the device is disposed within the housing of the meter.

45. The method of claim 1, further comprising:

determining that a voltage of the external low voltage power line is beyond a threshold voltage; and

transmitting a notification in response to said determining that a voltage of the external low voltage power line is beyond a threshold voltage.

47. The method of claim 1, further comprising in said first mode of operation:

decrypting the received second device data with a first key; and

encrypting the received second device data with a second key prior to said transmitting of the second device data.

48. The method of claim 1, wherein the second device data is received in a first frequency band and transmitted in a second frequency band different from the first frequency band.

17. A device for providing communications over an external low voltage power line supplying power to a customer premises having an internal low voltage power line network, comprising:

a first communication module configured to communicate over the external low voltage power line and the internal low voltage power line network of the customer premises;

a second communication module in communication with said first communication module and configured to provide wireless communications for one or more remote devices;

a processor in communication with said first communication module and said second communication module;

said processor having first mode of operation in which said processor is operable to cause said first communication module to repeat data by re-transmitting data over a power line that is received via a power line;

said processor having a second mode of operation in which said processor is operable to cause said first communication module to not repeat data that is received via a power line; and

wherein said first and second communication modules and said processor form at least part of an assembly configured to be installed external to the customer premises and co-located with an electric utility meter.

18. The device of claim 17, wherein the external low voltage power line includes a first and second energized conductor and said first communication module is configured to be communicatively coupled to the first and the second energized conductors to differentially transmit data signals over the energized conductors.

19. The device of claim 17, wherein the first communication module is configured to communicate with a transformer bypass device via the external low voltage power line.

20. The device of claim 17, wherein the remote devices include a plurality of wireless user devices disposed within the customer premises.

21. The device of claim 17, wherein the electric utility meter has a housing and at least a portion of the assembly is disposed within the housing of the meter.

22. The device of claim 17, wherein the remote devices include a utility device.

23. The device of claim 17, wherein the remote devices include one or more wireless user devices disposed within the customer premises and one or more utility devices.

24. The device of claim 17,

wherein said first communication module is configured to decrypt data received via the external low voltage power line from a first device with a first key and to encrypt data transmitted over the internal low voltage power line network of the customer premises to a second device with a second key.

25. The device of claim 24, wherein said processor is configured to receive utility data from the electric utility meter and to cause said first communication module to transmit the utility data over the external low voltage power line.

26. The device of claim 17, further comprising a routing device in communication with said first communication module and said second communication module and forming part of the assembly.

27. The device of claim 17, wherein said second communication module comprises a wireless transceiver substantially compatible with an IEEE 802.11 protocol.

28. The device of claim 17, wherein said assembly comprises a circuit card configured to be attached to a utility meter.

44. The device of claim 17, further comprising a processor in communication with said first communication module and configured to cause said first communication module to transmit a notification in response to a determination that a voltage of the external low voltage power line is beyond a threshold voltage.

29. A system for providing communications to a plurality of customer premises via one or more external low voltage power lines and each customer premises having an internal power line network, comprising:

a power line communication device comprising a first modem configured to communicate over the one or more external low voltage power lines;

a plurality of wireless interface devices, each located at, and external to, a respective one of the plurality of customer premises and wherein each wireless interface device includes;

a first communication module configured to communicate with said power line communication device via the external low voltage power line and configured to communicate over the internal power line network of a customer premises;

a second communication module in communication with said first communication module and configured to provide wireless communications for one or more remote devices within the respective customer premises;

each of said plurality of wireless interface devices having first mode of operation in which said first communication module is configured to repeat data by re-transmitting data over a power line that is received via either of the external low voltage power line and the internal power line network of the customer premises; and

each of said plurality of wireless interface devices having a second mode of operation in which said first communication module is configured to not repeat data that is received via a power line.

30. The system of claim 29, wherein said power line communication device further comprises a routing device in communication with said first modem.

31. The system of claim 29, wherein the external low voltage power lines include a first and second energized conductor and said first communication module is configured to be communicatively coupled to the first and the second energized conductors to differentially transmit data signals over the energized conductors.

32. The system of claim 29, wherein the one or more remote devices include a plurality of wireless user devices disposed within the respective customer premises.

33. The system of claim 29, wherein the power line communication device is configured to communicate over a medium voltage power line.

34. The system of claim 29, wherein said first communication module forms at least part of an assembly and said assembly comprises a circuit card configured to be electrically connected to a utility meter.

35. The system of claim 29, wherein said first and second communication modules form at least part of an assembly configured to be co-located with an electric utility meter.

36. The system of claim 35, wherein the electric utility meter has a housing and at least a portion of said assembly is disposed within the housing of the meter.

37. The system of claim 29, wherein the one or more remote devices include a utility device.

38. The system of claim 29, wherein the one or more remote devices include one or more wireless user devices and said second communication module is configured to provide wireless communications for one or more utility devices.

39. The system of claim 29, further comprising a processor in communication with said first communication module and said second communication module.

40. The system of claim 39, wherein said processor is configured to receive utility data from an electric utility meter and to cause said first communication module to transmit the utility data over the external low voltage power line.

41. The system of claim 29, further comprising a routing device in communication with said first communication module and said second communication module.

42. The system of claim 29, wherein said second communication module comprises a wireless transceiver substantially compatible with an IEEE 802.11 protocol.

43. The system of claim 29, further comprising a processor in communication with said first communication module and configured to cause said first communication module to transmit a notification in response to a determination that a voltage of the external low voltage power line is beyond a threshold voltage.

46. The system of claim 29, wherein in said first mode of operation said first communication module is configured to decrypt data received via the external low voltage power line from the power line communication device with a first encryption key and to encrypt data transmitted over the internal power line network of the customer premises to a user device with a second encryption key.