Automated meter reading system

• US 8,739,148 B2
• Filed: 02/09/2007
• Issued: 05/27/2014
• Est. Priority Date: 02/09/2007
• Status: Active Grant

• Current Assignee: Elster Electricity LLC (Honeywell International Inc.)
• Original Assignee: Elster Electricity LLC (Honeywell International Inc.)
• Inventors: Worth, Stephen, Forseth, Gregory A., Disalvo, Mark
• Primary Examiner(s): DENG, ANNA CHEN
• Application Number:
  US11/704,715
• Publication Number:
  US 20080195562A1
• Time in Patent Office: 2,664 Days
• Field of Search: 717168-178
• US Class Current: 717/168
• CPC Class Codes: G01R 22/063 related to remote communication
• CPC Class Codes: G01R 22/10 using digital techniques
• CPC Class Codes: G01R 35/04 of instruments for measuring time integral of power or current
• CPC Class Codes: G06Q 50/06 Energy or water supply

Abstract

In an automatic remote metering system in accordance with the invention a method is provided for reprogramming each client utility meter from a host computer by downloading a reprogram first program from the host to a corresponding hub utility meter fourth memory portion via a communications link, verifying integrity of the reprogram first program, and downloading the reprogram first program from the hub utility meter to the client utility meter via a radio frequency link and overwriting the client utility meter first program code with the reprogram first program code.

Claims

1. A method of re-programming a utility meter from a first program code to a second program code, while performing metering operations, using an application server program, said utility meter comprising a memory and a microcontroller operating according to program code that is stored in said memory, said method comprising:

controlling, via said microcontroller, the metering operations on said utility meter according to said first program code;

remotely receiving, at said utility meter, said application server program from a remote computer using a public link data connection;

using said application server program to receive the second program code and to control the metering operations on the utility meter while receiving the second program code;

checking an integrity of said second program code to verify the integrity prior to overwriting said first program code, wherein checking the integrity of said second program code comprises utilizing checksums to determine the integrity;

overwriting, in said memory, said first program code with said second program code; and

controlling, via said microcontroller, the metering operations according to said second program code.

2. A method in accordance with claim 1, comprising:

checking an integrity of said application server program to verify said integrity prior to using said application server program to control said metering operations on said utility meter.

3. A method in accordance with claim 2, comprising:

aborting use of said application server program in the event that the integrity of said application server program is not verified.

4. A method in accordance with claim 2, wherein:

said checking the integrity of said application server program comprises utilizing checksums to determine the integrity.

5. A method in accordance with claim 1, comprising:

aborting said overwriting of said first program code in the event that the integrity of said second program is not verified.

6. In an automatic meter reading system comprising a host computer, a hub meter, and a client meter, wherein communications between the client meter and the host computer are via the hub meter, a method of re-programming the client meter from a first program code to a second program code, while performing metering operations, said method comprising:

controlling, via a microcontroller, the metering operations on said client meter according to said first program code;

remotely receiving, at said client meter, an application server program, wherein said application server program is received via said hub meter that received the application server program from said host computer using a public link data connection;

using said application server program to receive the second program code and to control the metering operations on the client meter while receiving the second program code;

checking an integrity of said second program code to verify the integrity prior to overwriting said first program code, wherein checking the integrity of said second program code comprises utilizing checksums to determine the integrity;

overwriting said first program code with said second program code; and

controlling, via said microcontroller, the metering operations according to said second program code.

7. A method in accordance with claim 6, wherein:

an integrity of said application server program has been checked to verify said integrity prior to using said application server program to control said metering operations on said client meter.

8. A method in accordance with claim 7, comprising:

aborting use of said application server program in the event that the integrity of said application server program is not verified.

9. A method in accordance with claim 7, wherein:

said integrity of said application server program has been checked utilizing checksums to determine the integrity.

10. A method in accordance with claim 6, comprising:

aborting said overwriting of said first program code in the event that the integrity of said second program is not verified.

11. A method in accordance with claim 6, comprising:

receiving, from said host computer, said application server program at said hub meter; and

using said application server program to receive the second program code at the hub meter and to control the metering operations on the client meter while receiving the second program code.

12. A method in accordance with claim 11, comprising:

checking an integrity of said application server program, at said hub meter, to verify said integrity prior to using said application server program to control said metering operations on said hub meter.

13. A method in accordance with claim 12, comprising:

aborting use of said application server program, at said hub meter, in the event that the integrity of said application server program is not verified.

14. A method in accordance with claim 12, wherein:

said checking the integrity of said application server program comprises utilizing checksums to determine the integrity.

15. A method in accordance with claim 11, comprising:

checking an integrity of said second program code, at said hub meter, to verify the integrity prior to overwriting said first program code.

16. A method in accordance with claim 15, comprising:

aborting said receiving of said second program code, at said hub meter, in the event that integrity of said second program is not verified.

17. A method in accordance with claim 15, wherein:

said integrity verification step comprises utilizing checksums to determine the integrity.

18. In an automatic remote metering system comprising a host computer, a hub meter, and a client meter, a method of re-programming the client meter from a first client program code to a second client program code, while performing metering operations, the method comprising:

controlling, via a microcontroller, the metering operations on said client meter according to said first client program code;

remotely receiving, at said client meter, an application server program, wherein said application server program is received via said hub meter that received the application server program from said host computer using a public link data connection;

using said application server program to receive the second client program code and to control the metering operations on the client meter while receiving the second client program code, wherein the second client program code is received via a radio frequency communications link to said hub meter;

checking an integrity of said second client program code to verify the integrity by said hub meter prior to overwriting said first client program code, wherein checking the integrity of said second client program code comprises utilizing checksums to determine the integrity;

overwriting said first client program code with said second client program code; and

controlling, via said microcontroller, the metering operations according to said second client program code.

19. A method in accordance with claim 18, comprising:

performing said overwriting step while performing communication functions and said metering operations at said client utility meter.

20. A method in accordance with claim 19, wherein:

said radio frequency link comprises a frequency hopping spread spectrum communications link.

21. A method in accordance with claim 20, wherein:

said communications link comprises a cellular communications link.

22. A method in accordance with claim 18, comprising:

receiving, at said hub meter, a second hub program code from said host computer, wherein said second hub program code is received via a communications link to said host computer;

verifying an integrity of said second hub program code; and

overwriting, in memory at said hub meter, a first hub program code with said second hub program code.

23. A method in accordance with claim 22, comprising:

performing said second hub program code overwriting step while performing communication functions and metering operations at said hub meter.

24. In an automatic remote metering system comprising a host computer, a hub meter, and a client meter, wherein communications between the client meter and the host computer are via the hub meter, a method of re-programming the client meter from a first program code to a second program code, while performing metering operations, the method comprising:

remotely receiving, at the hub meter, an application server program from the host computer via a public link data connection, wherein the public link data connection comprises a cellular communications link to the host computer;

using said application server program to receive the second program code, at said hub meter, and to control the metering operations on the hub meter while receiving the second program code;

verifying an integrity of the second program code prior to sending the second program code to the client meter, wherein verifying the integrity of said second program comprises utilizing checksums to determine the integrity; and

sending, via a radio frequency communications link, the second program code to the client meter for overwriting the first program code on the client meter.

25. A method in accordance with claim 24, wherein prior to using said application server program at said hub meter, an integrity of said application server program is verified by said hub meter;

and

wherein the method further comprises;

sending said application server program to said client utility meter via said radio frequency communications link.

26. In an automatic remote metering system comprising a host computer, a hub meter, and a client meter, wherein communications between the client meter and the host computer are via the hub meter, a method of re-programming the client meter from a first client program code to a second client program code, while performing metering operations, the method comprising:

remotely receiving at the client meter, via a radio frequency communications link to the hub meter, an application server program, wherein the application server program is received from via said hub meter that received the application server program from said host computer using a public link data connection;

using said application server program to receive the second client program code from said host computer and to send metering information to said host computer while receiving the second client program code, wherein said second client program code is received and said metering information is sent via said radio frequency communications link to said hub meter;

checking an integrity of said second client program code to verify the integrity by said hub meter prior to overwriting said first client program code, wherein checking the integrity of said second client program code comprises utilizing checksums to determine the integrity;

overwriting said first client program code with said second client program code; and

controlling the metering operations according to said second client program code.

27. A method in accordance with claim 26, comprising:

performing said overwriting step while performing communication functions and said metering operations at said client utility meter.

28. A method in accordance with claim 26, wherein:

said radio frequency link comprises a frequency hopping spread spectrum communications link.

29. A method in accordance with claim 28, wherein:

said communications link comprises a cellular communications link.

30. A method in accordance with claim 26, comprising:

receiving, at said hub meter, a second hub program code from said host computer, wherein said second hub program code is received via a communications link;

verifying an integrity of said second hub program code; and

overwriting, in memory at said hub meter, a first hub program code with said second hub program code.

31. A method in accordance with claim 30, comprising:

performing said second hub program code overwriting step while performing communication and metering functions at said hub meter.