Bypass device and method for a power line communications system

• US 7,561,026 B2
• Filed: 10/12/2007
• Issued: 07/14/2009
• Est. Priority Date: 09/02/2005
• Status: Active Grant

• Current Assignee: Chemtron Research LLC (Intellectual Ventures LLC)
• Original Assignee: Current Technologies LLC (Pattern Inc.)
• Inventors: Berkman, William H.
• Primary Examiner(s): TRIEU, VAN THANH
• Application Number:
  US11/871,218
• Publication Number:
  US 20080031367A1
• Time in Patent Office: 641 Days
• Field of Search: 340/310.01, 340/310.02, 340/310.06, 340/310.07, 340/310.08, 340/310.11, 340/310.12, 340/310.16, 340/310.17, 340/310.18, 375/219, 375/220, 375/258, 370/463
• US Class Current: 340/12.38
• CPC Class Codes: H04B 2203/5433 Remote metering
• CPC Class Codes: H04B 2203/5491 using filtering and bypassing
• CPC Class Codes: H04B 3/54 Systems for transmission via power distribution lines

Abstract

A passive bypass device for providing a data path around a power meter is provided. The device may be communicatively connected to two low voltage power line energized conductors on a first and a second side of a power meter. The energized power line conductors conduct both the data signals and the power. The bypass device includes a filter that causes the power to pass through the power meter while allowing the data signal to pass around the power meter thereby providing a substantially non-attenuated data signal path. The bypass device may include a first and second data path for the first and second energized conductors and with each path having a high pass filter and a fuse communicatively connected to its respective energized conductor on each side of the power meter.

Claims

1. A device for communicating data signals around an attenuating apparatus attached to a power line that attenuates high frequency data signals, comprising:

a first conductor configured to be electrically connected to the power line on a first side of the attenuating apparatus and a second conductor configured to be connected to a conductor on a second side of the attenuating apparatus;

a first high pass filter;

wherein said first conductor, said second conductor, and said high pass filter are in series with each other and collectively form a first data path; and

wherein said first data path permits the data signals to passively bypass the attenuating apparatus while inhibiting the flow of power around the attenuating apparatus.

2. The device according to claim 1, wherein said first data path further comprises a first fuse communicatively coupled to said first high pass filter.

3. The device according to claim 2, wherein said first data path further comprises a first inductor communicatively coupled to said first high pass filter.

4. The device according to claim 1, wherein said first high pass filter comprises a capacitor.

5. The device according to claim 4, wherein said first data path further comprises a fuse in series with said capacitor.

6. The device according to claim 1, wherein the device is configured to conduct signals transmitted from a low voltage repeater coupled to a low voltage power line.

7. The device according to claim 6, wherein the low voltage repeater comprises an outdoor low voltage repeater.

8. The device according to claim 1, wherein the attenuating apparatus comprises a power meter.

9. A method for communicating data signals around an attenuating apparatus attached to a low voltage power line that carries a power signal, comprising:

coupling a passive bypass device to each side of the attenuating apparatus;

conducting the data signals over the low voltage power line;

filtering the power signal with the passive bypass device; and

conducting the data signals around the apparatus with the passive bypass device.

10. The method according to claim 9, wherein said filtering employs a high pass filter.

11. The method according to claim 10, further comprising conducting the data signals through a fuse of the bypass device.

12. The method according to claim 9, wherein said filtering employs a capacitor.

13. The method according to claim 9, wherein the data signals are transmitted from a power line communications device coupled to the low voltage power line.

14. The method according to claim 9, wherein the attenuating apparatus comprises a power meter.

15. A device for communicating data signals around an attenuating apparatus attached to a low voltage power line, comprising:

a passive data path comprising a first high pass filter configured to be communicatively coupled to an energized conductor of the low voltage power line on a first side of the attenuating apparatus and to a conductor on a second side of the attenuating apparatus;

said first high pass filter configured to conduct data signals while substantially preventing the flow of power around the attenuating apparatus; and

wherein said first high pass filter comprises an in series capacitor.

16. The device according to claim 15, wherein said first data path further comprises a first fuse in series with said capacitor.

17. The device according to claim 15, wherein the passive data path is configured to conduct signals transmitted from a power line communications device coupled to a medium voltage power line to a user device in a customer premises.

18. The device according to claim 15, wherein the passive data path is configured to conduct signals transmitted from a power line communications device coupled to a low voltage power line.

19. The device according to claim 15, wherein the attenuating apparatus comprises a power meter.

20. The device according to claim 15, wherein the device is configured to conduct signals transmitted from a low voltage repeater coupled to the low voltage power line.