Electronic power meter

• US 20020169570A1
• Filed: 04/12/2002
• Published: 11/14/2002
• Est. Priority Date: 05/11/2001
• Status: Active Grant

• Current Assignee: Electro Industries/Gaugetech
• Original Assignee: Electro Industries/Gaugetech
• Inventors: Wang, Wei, Kagan, Erran, Spanier, Joseph
• Granted Patent: US 6,751,563 B2
• Time in Patent Office: Days
• US Class Current: 702/61
• CPC Class Codes: G01R 21/133 by using digital technique

Abstract

An electric power meter having a digital sampler for sampling a voltage and a current at a sampling point and having a processor for processing at least one of the sampled voltage and the sampled current. A memory is provided for storing network protocol conversion algorithms. The electric utility power meter has a network interface. The processor performs at least one power calculation and converts at least one of the sampled voltage, the sampled current and the power calculation to at least one network protocol using said network protocol conversion algorithms, said at least one network protocol provided through said network interface.

Claims

1. An electric power meter having a digital sampler for sampling a voltage and a current at a sampling point and having a processor for processing at least one of the sampled voltage and the current, comprising:

a memory for storing network protocol conversion algorithms; and

a network interface;

wherein said processor performs at least one power calculation and converts at least one of the sampled voltage, the sampled current and the power calculation to at least one network protocol using one of said network protocol conversion algorithms, said at least one network protocol provided through said network interface.

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

3. The electric power meter of claim 2, wherein said network interface is an Ethernet interface.

4. The electric power meter of claim 1, wherein said network protocol is one of Modbus Transmission Control Protocol (TCP), RS-485, e-mail, File Transfer Protocol (FTP), or Dynamic Host Configuration Protocol (DHCP).

5. 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.

6. 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 packet data to said electric power meter to be processed and provided to said user through said network interface.

7. An electric power meter, comprising:

a digital sampler for digitally sampling voltage and current;

a memory for storing said digitally sampled voltage and current;

at least one processor for performing power calculations on said digitally sampled voltage and current, and converting said calculations and said digitally sampled voltage and current into at least one network protocol; and

a network interface for interfacing with an external network.

8. The electric power meter of claim 7, wherein said network interface supports multiple users simultaneously.

9. The electric power meter of claim 8, wherein said network interface supports one of 100 base-T and 10 base-T communications.

10. The electric power meter of claim 7, wherein said network protocol is one of Modbus Transmission Control Protocol (TCP), RS-485, e-mail, File Transfer Protocol (FTP), or Dynamic Host Configuration Protocol (DHCP).

11. The electric power meter of claim 7, wherein a web server provides data to the network interface in Hypertext Markup Language (HTML) or Extensible Markup Language (XML) format.

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

an external device interface for connecting an external device to said electric power meter,

wherein said external device transmits packet data to said electric power meter to be processed by the processor and provided through said network interface.

14. The electric power meter of claim 13, wherein said interfacing means further comprises means for interfacing with multiple users simultaneously.

15. The electric power meter of claim 13, wherein said interfacing means supports one of 100 base-T and 10 base-T communications.

16. The electric power meter of claim 13, wherein said network protocol is one of Modbus Transmission Control Protocol (TCP), RS-485, e-mail, File Transfer Protocol (FTP), or Dynamic Host Configuration Protocol (DHCP).

17. The electric power meter of claim 13, further comprising means for providing data in Hypertext Markup Language (HTML) or Extensible Markup Language (XML) format.

18. The electric power meter of claim 13, further comprising:

means for connecting an external device to said electric power meter,

wherein said external device transmits packet data to said electric power meter to be processed by the processor and provided through said interfacing means.

13. An electric power meter, comprising:

means for digitally sampling voltage and current;

means for storing said digitally sampled voltage and current;

means for performing power calculations upon said digitally sampled voltage and current, and converting said calculations and said digitally sampled voltage and current into at least one network protocol; and

means for interfacing with an external network.