GHM aggregator

• US 6,346,875 B1
• Filed: 01/03/2000
• Issued: 02/12/2002
• Est. Priority Date: 01/03/2000
• Status: Expired due to Term

• Current Assignee: ABB Schweiz AG (ABB Limited)
• Original Assignee: General Electric Company
• Inventors: Hershey, John Erik, Korkosz, Richard August, Saulnier, Gary Jude, Puckette, Charles McDonald
• Primary Examiner(s): POPE, DARYL C
• Application Number:
  US09/476,821
• Time in Patent Office: 771 Days
• Field of Search: 340/310.01, 340/539, 340/310.05, 340/310.06, 340/870.02, 340/870.05, 340/870.011
• US Class Current: 340/870.02
• CPC Class Codes: H04B 2203/5416 by adding signals to the wave form of the power source
• CPC Class Codes: H04B 2203/5433 Remote metering
• CPC Class Codes: H04B 2203/5441 Wireless systems or telephone
• CPC Class Codes: H04B 2203/5483 using coupling circuits
• CPC Class Codes: H04B 3/54 Systems for transmission via power distribution lines

Abstract

The invention provides an aggregator for use in connection with a power distribution network including a power line. The aggregator comprises a receiver, a controller, and a data outbound link. The receiver is coupled to the power line and is configured to receive signals comprising messages, for example geometric harmonic modulation (GHM) signals, from the power line. The controller is coupled to the receiver and to the data outbound link. The controller is configured to provide messages received by the receiver to the data outbound link for transmission by radio frequency energy to a destination, for example a power control station.

Claims

1. A communication system for use in connection with a power distribution network including a plurality of power lines, said communication system comprising:

a GHM aggregator connected to at least one of the plurality of power lines, the GHM aggregator comprising;

a GHM receiver coupled to said at least one of the plurality of power lines, said GHM receiver configured to receive GHM signals transmitted on said at least one of the plurality of power lines wherein the GHM signals correspond to data measured by at least one utility meter;

a controller coupled to said GHM receiver, said controller processing the GHM signals received by said GHM receiver wherein said controller demodulates the GHM signals into the data and converts the data into at least one message; and

a data outbound link connected to said controller, the data outbound link comprising a transmitter for transmitting said at least one message without employing said at least one of the plurality of power lines as a transmission medium.

2. The communication system of claim 1 wherein the GHM aggregator further comprises a data inbound link and a GHM transmitter, said data inbound link connected to said controller for receiving inbound messages transmitted without employing said at least one of the plurality of power lines as a transmission medium, said GHM transmitter connected to said controller and said at least one of the plurality of power lines wherein the inbound messages are converted to GHM signals and transmitted by said GHM transmitter over said at least one of the plurality of power lines.

3. The communication system in accordance with claim 1 further comprising a message storage unit coupled to said controller and to said data outbound link, said message storage unit configured to store messages received from said controller and to provide said messages to said data outbound link for transmission.

4. The communication system in accordance with claim 2 wherein said data inbound link comprises a radio frequency receiver.

5. The communication system in accordance with claim 1 wherein said transmitter of said data outbound link comprises a satellite uplink.

6. The communication system in accordance with claim 2 wherein said data inbound link comprises a satellite downlink.

7. The communication system according to claim 1 wherein the data comprise power consumption data derived from a power meter connected to said at least one of the plurality of power line.

8. The communication system in accordance with claim 2 wherein said data in bound link comprises a telecommunications link.

17. The communication system in accordance with claim 1 wherein said transmitter of said data outbound link comprises a telecommunications link.

18. The communication system in accordance with claim 1 wherein said transmitter of said data outbound link comprises a radio frequency transmitter.

9. A communication system for use with a power distribution network including at least one power line, said communication system comprising:

a GHM transceiver connect ed to the at least one power line for determining power consumption data and converting the power consumption data into GHM signals wherein said GHM transceiver transmits the GHM signals over the at least one power line; and

a GHM aggregator connected to the at least one power line and receiving the GHM signals transmitted by the GHM transceiver, the GHM aggregator comprising;

a GHM transmitter connected to the at least one power line for transmitting GHM aggregator signals over the at least one power line;

a GHM receiver connected to the at least one power line, said GHM receiver receiving the GHM signals transmitted by the GHM transceiver over the at least one power line;

a controller coupled to said GHM receiver and said GHM transmitter, said controller processing the GHM signals received by said GHM receiver wherein said controller demodulates the GHM signals into the power consumption data and converts the power consumption data into at least one message;

a message storage unit connected to said controller for storing the at least one message produced by said controller; and

a data outbound link coupled to said message storage unit and configured to transmit said at least one message from the message storage unit without employing the at least one power line as a transmission medium.

10. The communication system of claim 9 wherein said GHM aggregator further comprises a data inbound link coupled to the controller, said data inbound link receiving inbound messages transmitted without employing the at least one power line as a transmission medium.

11. The communication system in accordance with claim 9 wherein said data outbound link comprises a radio frequency transmitter.

12. The communication system in accordance with claim 9 wherein said data outbound link comprises a satellite uplink.

13. The communication system in accordance with claim 10 wherein said data inbound link comprises a radio frequency transmitter.

14. The communication system in accordance with claim 10 wherein said data inbound link comprises a satellite downlink.

15. The communication system in accordance with claim 9 wherein said data outbound link comprises a telecommunications link.

16. The communication system in accordance with claim 10 wherein said data inbound link comprises a telecommunications link.