Electrical power metering system

• US 7,058,524 B2
• Filed: 10/25/2002
• Issued: 06/06/2006
• Est. Priority Date: 10/25/2002
• Status: Expired due to Term

• Current Assignee: Hudson Bay Wireless, LLC
• Original Assignee: Hudson Bay Wireless, LLC
• Inventors: Hayes, Paul V., Morella, Daniel T.
• Primary Examiner(s): Hoff, Marc S.
• Assistant Examiner(s): Desta, Elias
• Application Number:
  US10/280,533
• Publication Number:
  US 20040083066A1
• Time in Patent Office: 1,320 Days
• Field of Search: 702/57, 702 60- 62, 702/189, 702/190, 340/870.01, 709/100, 709/102, 375/220, 375/222, 379/90.01, 379/106, 700/1, 700/73, 700/90
• US Class Current: 702/62
• CPC Class Codes: G01D 4/004 Remote reading of utility meters to a fixed location
• CPC Class Codes: H02J 13/00002 characterised by monitoring
• CPC Class Codes: H02J 13/00007 using the power network as support for the transmission
• CPC Class Codes: H02J 13/00028 involving the use of Internet protocols
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/161 Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• 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: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 10/30 State monitoring, e.g. fault, temperature monitoring, insulator monitoring, corona discharge
• CPC Class Codes: Y04S 20/242 Home appliances
• CPC Class Codes: Y04S 20/30 Smart metering, e.g. specially adapted for remote reading
• CPC Class Codes: Y04S 40/121 using the power network as support for the transmission
• CPC Class Codes: Y04S 40/128 involving the use of Internet protocol

Abstract

A wireless electrical power metering system is provided. A processor having a multichannel power line transceiver, a wireless transceiver, and a power meter attached thereto measures power consumption information on a power line inductively coupled with the power meter. The processor converts the power consumption information into IP-based data, and transmits same over the wireless transceiver. The information can be wirelessly received by a remote monitoring station or transmitted across the Internet for storage, analysis, and billing. The processor generates appliance control signals and generates same across the multichannel power line transceiver to remotely control appliances in response to power consumption trends. The processor provides firewall capabilities, and relays information between a wired or wireless network and a power line network, thereby expanding the size of existing household networks. Further, the processor allows multiple dwellings to be networked using power lines, and households to be connected to the Internet via a power line network.

Claims

1. An electrical power metering system comprising:

a power meter coupled with a power line for measuring power consumption data from the power line, the power meter dividing the power line to form an internal network and an external power line network;

a processor connected to the power meter for converting the power consumption data measured by the power meter into Internet Protocol (IP) data;

a network interface connected between the processor and the internal network for transmitting and receiving IP data between the processor and the internal network;

a transceiver connected between the processor and the external power line network for transmitting and receiving IP data between the processor and the external power line network; and

means for selectively routing IP data between the external power line network and the internal network, said means selectively operable as a firewall for filtering IP data routed between the external power line network and the internal network;

wherein power consumption information is transmitted autonomously in IP format over the external power line network.

2. The system of claim 1, wherein the transceiver transmits and receives X-10 data and control signals across the external power line network.

3. The system of claim 1, wherein the transceiver comprises a HomePlug power line interface for transmitting and receiving IP traffic between the processor and the external power line network.

4. The system of claim 1, wherein the network interface comprises a wireless interface for transmitting and receiving IP data between the processor and the internal network.

5. The system of claim 1, wherein the external power line network connects to the Internet.

6. The system of claim 1, wherein the power meter further comprises a split-core transformer inductively coupled with the power line.

7. The system of claim 1, wherein the processor comprises a personal digital assistant (PDA).

8. The system of claim 1, wherein the processor filters and routes data between an external source and the internal network.

9. The system of claim 1, wherein the processor converts X-10 data from the external power line network into IP data for transmission across an internal IP network.

10. The system of claim 1, wherein the processor converts IP data into X-10 data and control signals for transmission across the internal network.

11. The system of claim 1, wherein the transceiver further comprises first and second contacts coupled with the external power line network, the first contact allowing communication external to a residence using the external power line network and the second contact allowing communication within the residence using an internal power line network.

12. The system of claim 11, further comprising a filter coupled with the power line and positioned between the first and second contacts for separating internal communications on the internal power line network and external communications on the external power line network.

13. The system of claim 1, further comprising a remote monitoring station for remotely monitoring the power consumption information.

14. The system of claim 13, wherein the remote monitoring station further comprises a wireless interface for transmitting data to and receiving data from the power metering system.

15. The system of claim 1, wherein the power metering system transmits and receives information across the Internet.

16. The system of claim 1, further comprising a wired network interface for connecting the power metering system to a wired network.

23. The system of claim 1, wherein the electrical power metering system is located at a first location and further comprises a network connection established between the electrical power metering system and a computer at a second location.

24. The system of claim 23, wherein the network connection comprises a wireless connection.

25. The system of claim 23, wherein the network connection comprises a power line connection.

26. The system of claim 23, wherein the network connection allows the computer in the second location to share an Internet connection provided at the first location.

34. The system of claim 1, wherein the internal network comprises an internal power line network.

35. The system of claim 1, wherein the power consumption information is one of kilowatt-hour usage for a current use period and cumulative kilowatt-hour usage for all use periods.

36. The system of claim 1, wherein the power consumption information is measured on the external power line network.

37. The system of claim 1, wherein the power consumption information is measured on the internal network.

17. A method of measuring power consumption information on a power line comprising:

measuring current fluctuations in the power line;

calculating power consumption information from the current fluctuations in a processor;

converting the power consumption information into IP-based power consumption information in the processor; and

transmitting the IP-based power consumption information from the processor to a destination autonomously in IP format over an external power line network.

18. The method of claim 17, further comprising:

receiving the IP-based power consumption information at the destination; and

calculating a utility bill using the IP-based power consumption information.

19. The method of claim 17, further comprising transmitting the IP-based power consumption information over an IP-based network.

20. The method of claim 17, further comprising wirelessly transmitting the IP-based power consumption information from the processor to the destination.

21. The method of claim 17, further comprising:

generating a control signal in the processor in response to the power consumption information;

transmitting the control signal to an appliance; and

controlling the appliance with the control signal.

22. The method of claim 21, wherein the step of controlling the appliance comprises turning the appliance off in response to increased power consumption.

27. A method for providing network connectivity and measuring power consumption information at a residence comprising:

interconnecting a power meter having a processor, a network interface, and a power line transceiver between a power line and an internal network at a residence, the power meter dividing the power line to form the internal network and an external power line network;

selectively routing Internet Protocol (IP) data between the external power line network and the internal network to provide access to the Internet at the residence using the external power line network;

calculating current and cumulative power consumption information at the residence using the power meter; and

converting the power consumption information into IP data for transmission over the Internet autonomously in IP format via the external power line network.

28. The method of claim 27, further comprising selectively filtering IP data between the external power line network and the internal network using a firewall in the power meter.

29. The method of claim 27, wherein the step of converting the power consumption information into IP data comprises encapsulating the power consumption information into one or more IP packets.

30. The method of claim 29, further comprising storing a destination IP address in the one or more IP packets.

31. The method of claim 30, further comprising transmitting the one or more IP packets to a destination specified by the destination IP address using the Internet.

32. The method of claim 30, further comprising simultaneously transmitting the one or more IP packets to a plurality of destinations using the destination IP address.

33. The method of claim 27, further comprising selectively routing IP data from the internal network to a second network at a second residence using the power meter and the external power line network.