Intelligent electronic device having network access

• US 7,917,314 B2
• Filed: 03/13/2008
• Issued: 03/29/2011
• Est. Priority Date: 02/23/2001
• Status: Expired due to Term

• Current Assignee: Power Measurement Ltd. (Schneider Electric SE)
• Original Assignee: Power Measurement Ltd. (Schneider Electric SE)
• Inventors: Hyatt, Geoffrey T., Hancock, Martin A., Dagg, Jordon M., Hirschbold, Markus F., Forth, J. Bradford, Lightbody, Simon H., Gilbert, Bryan J.
• Primary Examiner(s): Raymond; Edward
• Application Number:
  US12/047,774
• Publication Number:
  US 20080154523A1
• Time in Patent Office: 1,111 Days
• Field of Search: 702 61- 64, 702/182, 702/188, 324/74, 324/141, 324/142, 340/870.01, 340/870.03
• US Class Current: 702/61
• CPC Class Codes: G01D 2204/45 Utility meters networked together within a single building
• CPC Class Codes: G01D 4/004 Remote reading of utility meters to a fixed location
• CPC Class Codes: G01R 22/10 using digital techniques
• CPC Class Codes: G06F 8/656 while running
• CPC Class Codes: H04L 67/34 involving the movement of software or configuration parameters network booting or remote initial program loading [RIPL] G06F9/4416
• CPC Class Codes: H04L 69/28 Timers or timing mechanisms used in protocols
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols
• 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
• CPC Class Codes: Y10S 707/99945 Object-oriented database structure processing
• CPC Class Codes: Y10S 707/99948 Application of database or data structure, e.g. distributed, multimedia, or image

Abstract

An electric power meter is disclosed. The meter comprises means for digitally sampling voltage and current. The meter further comprises means for storing the digitally sampled voltage and current. The meter further comprises means for performing power calculations upon the digitally sampled voltage and current, and converting the calculations and the digitally sampled voltage and current into at least one network protocol. The meter further comprises means for interfacing with an external network. A system for modifying the functionality of the electric power meter is also disclosed.

Claims

1. An electric power meter having an analog to digital converter coupled with a sensor operative to sense electrical energy in one or more conductors and output corresponding electrical signals, the analog to digital converter being operative to convert the electrical signals output by the sensor to corresponding digital signals and having a processor for processing at least one of the digital signals, comprising:

a memory for storing network application protocol conversion algorithms; and

a network interface operative to implement a network communication protocol;

wherein said processor performs at least one power calculation and converts at least one of the digital signals and the power calculation to at least one network application protocol different from said network communication protocol using one of said network application protocol conversion algorithms, said at least one network application protocol provided through said network interface;

wherein said network application protocol is one of e-mail, File Transfer Protocol (FTP), or Hypertext Transfer Protocol (HTTP).

2. The electric power meter of claim 1, wherein a web server provides data to the network interface in Hypertext Markup Language (HTML) or Extensible Markup Language (XML) format.

3. The electric power meter of claim 1, further comprising:

an external device interface for connecting an external device to said electric power meter, wherein said external device transmits digital signals to said electric power meter to be processed and provided to said user through said network interface.

4. The electric power meter of claim 1, wherein said network interface supports multiple users simultaneously.

5. The electric power meter of claim 1, wherein said network interface is an Ethernet interface.

10. A system for modifying the functionality of the electric power meter of claim 4 previously installed in the field and operating, the system comprising:

a server computer, the electric power meter in communication with the server computer over a network, the electric power meter operated with a software configuration stored therein; and

a storage device in communication with the server computer, the storage device comprising a database, wherein a copy of the software configuration is stored in the database, the server is operable to modify the operation of the electric power meter as a function of modifications to the database.

11. The system of claim 10 wherein the server computer comprises a network server operatively communicating with a master server, the network server operable to generate display pages to create a virtual meter site and the master server operable to maintain the database.

12. The system of claim 10, wherein the server computer comprises an intelligent electronic device operatively communicating over the network.

13. The system of claim 10, further comprising a browser coupled to the server computer, the browser operable to access the database.

14. The system of claim 10, wherein the software configuration comprises firmware and frameworks.

15. The system of claim 14, wherein the server is operable to perform modifications to the firmware and frameworks as a function of selections lists selectable by a user.

16. The system of claim 15, wherein said electric power meter is operative to contact a second server to authorize payment for said modifications.

17. The system of claim 10, wherein the network comprises an Intranet.

18. The system of claim 10, wherein the network comprises an Internet Protocol based network.

19. The system of claim 10, wherein the electric power meter comprises a watt-hour meter.

20. The system of claim 10, wherein the software configuration is stored in said memory and said memory comprises volatile memory and non-volatile memory, wherein a first portion of the software configuration is stored in the non-volatile memory and a second portion of the software configuration is stored in the volatile memory.

21. The system of claim 20, wherein the second portion of the software configuration is transferable over the network from the database to the electric power meter as a function of instructions within the first portion of the software configuration.

22. The system of claim 20, wherein the server is operable to modify the operation of the electric power meter with an update transferable over the network to the electric power meter.

23. The system of claim 22, wherein the update comprises a modified software configuration.

24. The system of claim 22, wherein the update comprises a modification to the software configuration.

25. The system of claim 22, wherein the update comprises an enabling mechanism.

26. The system of claim 22, wherein the update comprises an email message.

27. The system of claim 22, wherein the update comprises a datafile.

6. An electric power meter having an analog to digital converter coupled with a sensor operative to sense electrical energy in one or more conductors and output corresponding electrical signals, the analog to digital converter being operative to convert the electrical signals output by the sensor to corresponding digital signals and having a processor for processing at least one of the digital signals, comprising:

a memory for storing network application protocol conversion algorithms; and

a network interface operative to implement a network communication protocol;

wherein said processor performs at least one power calculation and converts at least one of the digital signals and the power calculation to at least one network application protocol different from said network communication protocol using one of said network application protocol conversion algorithms, said at least one network application protocol provided through said network interface;

wherein a web server provides data to the network interface in Hypertext Markup Language (HTML) or Extensible Markup Language (XML) format.

7. The electric power meter of claim 6, further comprising:

an external device interface for connecting an external device to said electric power meter, wherein said external device transmits digital signals to said electric power meter to be processed and provided to said user through said network interface.

8. The electric power meter of claim 6, wherein said network interface supports multiple users simultaneously.

9. The electric power meter of claim 6, wherein said network interface is an Ethernet interface.

28. An electric power meter having an analog to digital converter coupled with a sensor operative to sense electrical energy in one or more conductors and output corresponding electrical signals, the analog to digital converter being operative to convert the electrical signals output by the sensor to corresponding digital signals, comprising:

a processor coupled to said analog to digital converter and configured to execute a plurality of different tasks related to said digital signals and running independently from one another in response to a plurality of concurrent requests submitted by multiple users;

a memory coupled to said processor for storing network application protocol conversion algorithms; and

a network interface operative to implement a network communications protocol and configured to simultaneously provide said multiple users each with a result of a respective one of said plurality of different tasks;

wherein said processor performs at least one power calculation and converts at least one of the digital signals and the power calculation to at least one network application protocol different from said network communications protocol using one of said network application protocol conversion algorithms, said at least one network application protocol being provided through said network interface via said network communications protocol;

wherein said network application protocol is one of e-mail, File Transfer Protocol (FTP), or Hypertext Transfer Protocol (HTTP).

29. An electric power meter having an analog to digital converter coupled with a sensor operative to sense electrical energy in one or more conductors and output corresponding electrical signals, the analog to digital converter being operative to convert the electrical signals output by the sensor to corresponding digital signals, comprising:

a processor coupled to said analog to digital converter and configured to execute a plurality of different tasks related to said digital signals and running independently from one another in response to a plurality of concurrent requests submitted by multiple users;

a memory coupled to said processor for storing network application protocol conversion algorithms; and

a network interface operative to implement a network communications protocol and configured to simultaneously provide said multiple users each with a result of a respective one of said plurality of different tasks;

wherein said processor performs at least one power calculation and converts at least one of the digital signals and the power calculation to at least one network application protocol different from said network communications protocol using one of said network application protocol conversion algorithms, said at least one network application protocol being provided through said network interface via said network communications protocol;

wherein a web server provides data to the network interface in Hypertext Markup Language (HTML) or Extensible Markup Language (XML) format.