System for field installation of a remote meter interface

• US 5,914,672 A
• Filed: 06/13/1997
• Issued: 06/22/1999
• Est. Priority Date: 06/13/1997
• Status: Expired due to Term

• Current Assignee: PTC Inc.
• Original Assignee: Whisper Communications LLC
• Inventors: Glorioso, Charles A., Naddaf, Ali R.
• Primary Examiner(s): Horabik, Michael
• Assistant Examiner(s): WONG, ALBERT KANG
• Application Number:
  US08/874,684
• Time in Patent Office: 739 Days
• Field of Search: 340/870.02, 340/870.03, 340/870.06, 340/870.11, 340/870.28, 340/637, 379/106.01, 379/106.03, 375/200, 375/206, 324/110, 455/412, 455/426
• US Class Current: 340/870.02
• CPC Class Codes: G08C 17/02 using a radio link

Abstract

A system of multiple remote meter interfaces (RMI)s and multiple base stations. Each base station concentrates meter reading information received from several RMIs and passes the concentrated information up through a wide area network to a central office. Each RMI may be field installed to communicate with only one base station. Each base station maintains an identification (ID) list having its own base station ID and the RMI IDs for the RMIs with which the base station is enabled to communicate. To install or reinstall a particular RMI without communicating with the central office, a field installer tool operated by a field installation or repair person establishes communication with the base station using the base station ID, then directs the base station to add the RMI ID for the particular RMI to the ID list.

Claims

1. A method for field installation of a particular one of multiple remote interfaces to a particular one of multiple base stations, comprising steps of:

transmitting an installation signal in one or more installation signal bursts, said installation signal including a base station identification (ID) corresponding to said particular base station and a particular remote interface ID corresponding to said particular remote interface, said particular base station programmed to recognize only certain recognizable remote interface IDs corresponding to certain recognizable ones of said multiple remote interfaces, respectively, and said base station ID;

decoding signal energy for said installation signal at said particular base station;

recognizing said base station ID in said installation signal; and

designating said particular remote interface ID as one of said recognizable remote interface IDs for designating said particular remote interface as one of said recognizable remote interfaces, thereby enabling communication with said particular remote interface.

2. The method of claim 1, further including steps of:

alternating between a scheduled time segment and an acquisition time segment;

receiving scheduled communications with one or more active ones of said multiple remote interfaces during said scheduled time segment;

receiving said signal energy during said acquisition time segment;

decoding information in said signal energy for determining when said signal energy includes one of (i) a first of said installation signal bursts including said base station ID or (ii) a data signal burst including a first of said recognizable remote interface IDs from a first of said recognizable remote interfaces;

responding to said first installation signal burst by scheduling a next installation signal burst during said acquisition time segment; and

responding to said data signal burst by scheduling a next data signal burst with said first recognizable remote interface during said scheduled time segment.

3. The method of claim 1, further including steps of:

transmitting a first said installation signal burst including said base station ID from an installer tool;

receiving an acknowledgment signal at said installer tool; and

transmitting a second said installation signal burst including said particular remote interface ID from said installer tool.

4. The method of claim 1, further including steps of:

transmitting a first said data signal including said particular remote interface ID from said particular remote interface;

receiving signal energy for said first data signal at said base station;

recognizing said particular remote interface ID at said base station; and

responding to said data signal by transmitting a return signal.

5. The method of claim 4, wherein:

said return signal includes information for scheduling a second said data signal from said particular remote interface.

6. The method of claim 5, further including a step of:

receiving me asurement information at said particular remote interface.

7. The method of claim 6, further including steps of:

receiving said return signal a t said particular remote interface; and

transmitting said second data signal including said measurement information from said particular remote interface.

8. The method of claim 7, further including a step of:

receiving sa id second data signal at said base station;

concentrating said meas urement information with other inf ormation at said base station; and

issuing said concentrated information via a wide area network to a centr al office.

9. The method of claim 1, wherein:

said particular remote interface is a remote meter interface (RMI) for reading a meter.

10. A base station for receiving scheduled data signals from multiple remote interfaces that are active and an installation signal for installing a particular one of said multiple remote interfaces, comprising:

a receiver for receiving data signal bursts from said active remote interfaces according to a schedule and receiving signal energy for an installation signal having one or more installation signal bursts, said installation signal including said b as e station ID and a part icular remote interface ID corresponding to said particular remote interface;

a memory including an installation code and identification data including a base station ID corresponding to the base station and certain recognizable remote interface IDs corresponding, respectively, to certain recognizable ones of said multiple remote interfaces from which data signals are not being received according to said schedule; and

a microcontroller coupled to the memory and the receiver for following instructions in said installation code for recognizing said base station ID and responding to said installation signal by including said particular remote interface ID among said recognizable remote interface IDs, thereby enabling said base station for communication with said particular remote interface.

11. The base station of claim 10, wherein:

the memory further includes a communication code including instructions for alternating between a scheduled time segment for communicating with said active remote interfaces and an acquisition time segment for receiving said signal energy;

said signal energy further includes a data signal burst including a first of said recognizable remote interface IDs from a first of said recognizable remote interfaces; and

said installation code further includes instructions for responding to a first of said installation signal bursts by scheduling a next said installation signal burst during said acquisition time segment and responding to said data signal burst by scheduling a next data signal burst with said first recognizable remote interface during said scheduled time segment.

12. The base station of claim 11, further including:

a transmitter coupled to the microcontroller for transmitting an acknowledgment signal burst including said scheduling for said next installation burst and a return signal for transmitting a return signal burst including said scheduling for said next data signal burst.

13. The base station of claim 10, further including:

a wide area network interface for issuing concentrated information to a wide area network; and

wherein said communications code further includes instructions for collecting information received in several data signal bursts and providing said concentrated information.

14. The base station of claim 10, wherein:

at least one of said multiple remote interfaces is a remote meter interface (RMI) for reading a meter.

15. A system for communicating between multiple remote interfaces and multiple base stations where each of said remote interfaces communicates with only one of said base stations, comprising:

said mul tiple remote interfaces;

said multiple base stations;

a particular one of said remote interfaces that is to be installed, the particular remote interface having an associated remote interface identification (ID);

an installation tool for transmitting an installation signal in one or more installation signal bursts having a particular base station ID corresponding to a particular one of said base stations to which the particular remote interface is to be installed;

said particular base station including;

a memory including an installation code and identification data for certain recognizable remote interface IDs corresponding, respectively, to certain recognizable ones of said remote interfaces and said particular base station ID;

a receiver for receiving data signal bursts from active ones of said multiple remote interfaces and receiving signal energy for said installation signal; and

a microcontroller coupled to the memory and the receiver for following instructions in said installation code for recognizing said base station ID and responding to said installation signal by including said particular remote interface ID as one said recognizable remote interface IDs, thereby enabling said particular base station for said communication with said particular remote interface.

16. The system of claim 15, wherein:

said memory further includes a communication code including instructions for alternating between a scheduled time segment for communicating with said active remote interfaces and an acquisition time segment for receiving said signal energy;

said signal energy further includes a data signal burst including a first of said recognizable remote interface IDs from a first of said recognizable remote interfaces; and

said installation code further includes instructions for responding to a first of said installation signal bursts by scheduling a next said installation signal burst during said acquisition time segment and responding to said data signal burst by scheduling a next data signal bursts from said first recognizable remote interface during said scheduled time segment.

17. The system of claim 16, wherein:

said particular base station further includes a transmitter coupled to the microcontroller for transmitting an acknowledgment signal including said scheduling for said installation signal and a return signal for transmitting a return signal including said scheduling for said data signal.

18. The system of claim 16, wherein:

said particular base station further includes a wide area network interface for issuing concentrated information to a wide area network; and

said communication code further includes instructions for collecting information received in said several data signal bursts and providing said concentrated information.

19. The system of claim 15, wherein:

at least one of said multiple remote interfaces is a remote meter interface (RMI) for reading a meter.