Claims
- 1. A utility meter for use in an automatic meter reading (AMR) network, comprising:
- (a) a radio frequency (RF) transceiver;
- (b) metering means; and
- (c) a controller operatively coupled to said RF transceiver and said metering means, said meter being programmed to receive a message from an AMR node via said RF transceiver and, depending on the content of said message, to respond to said node or repeat said message by sending a modified message in a format that is receivable by another meter in said AMR network;
- wherein said meter is operable to receive messages transmitted with a first prescribed signal type and a first data rate, to transmit responsive messages with a second prescribed signal type and a second data rate, and to repeat messages with said first prescribed signal type, and wherein said second data rate is substantially higher than said first data rate.
- 2. A utility meter as recited in claim 1, wherein said first prescribed signal type is ASK.
- 3. A utility meter as recited in claim 1, wherein said second prescribed signal type is FSK.
- 4. A utility meter as recited in claim 1, wherein said first prescribed signal type is ASK and said second prescribed signal type is FSK; and said first data rate is one of about 1 Kb/s and about 128 b/s and said second data rate is about 100 Kb/s.
- 5. A utility meter for use in an automatic meter reading (AMR) network, comprising:
- (a) a radio frequency (RF) transceiver; and
- (b) a controller operatively coupled to said RF transceiver, said meter being programmed to receive a message from an AMR node via said RF transceiver and, depending on the content of said message, to respond to said node or repeat said message by sending a modified message in a format that is receivable by another meter in said AMR network;
- wherein said meter is operable to receive messages transmitted with a first prescribed signal type and a first data rate, to transmit responsive messages with a second prescribed signal type and second data rate, and to repeat messages with said first prescribed signal type; and wherein said first prescribed signal type is ASK and said second prescribed signal type is FSK.
- 6. A method for operating a utility meter used in connection with a fixed automatic meter reading (AMR) network, comprising the steps of:
- (a) receiving a message originated by an AMR node;
- (b) determining whether the message is to be repeated;
- (c) if the message is not to be repeated, determining whether the meter must respond to the message and, if so, transmitting a responsive message containing meter data, said responsive message being characterized by a first data rate; and
- (d) if the message must be repeated, creating a modified message and transmitting the modified message, wherein said modified message is formatted so as to be receivable by another meter in the AMR network, and wherein said modified message is characterized by a second data rate that is substantially less than said first data rate.
- 7. A method as recited in claim 6, wherein said responsive message contains meter data.
- 8. A method as recited in claim 6, wherein said other meter is adapted to receive amplitude shift keyed signals, and said modified message is formatted by amplitude shift keying (ASK).
- 9. A method as recited in claim 6, wherein said other meter is adapted to receive amplitude shift keyed signals and said modified message is formatted by amplitude shift keying (ASK); and wherein the method further comprises the steps of, after creating and transmitting the modified message, waiting for a response from the other meter and, once said response from the other meter is received, modifying the other meter's response and then transmitting the modified response of said other meter, wherein the modified other meter response is formatted so as to be receivable by said AMR node, said AMR node being adapted to receive frequency shift keyed signals and said modified response of said other meter being formatted by frequency shift keying (FSK).
- 10. A method as recited in claim 6, further comprising the steps of waiting for a response from the other meter and, once said response from the other meter is received, modifying the other meter's response message and transmitting the modified response of said other meter, wherein said modified other meter response is formatted so as to be receivable by said AMR node.
- 11. A method as recited in claim 10, wherein said AMR node is adapted to receive frequency shift keyed signals, and said modified response of said other meter is formatted by frequency shift keying (FSK).
- 12. A utility meter for use in an automatic meter reading (AMR) network, comprising:
- (a) a radio frequency (RF) transceiver; and
- (b) a controller operatively coupled to said RF transceiver, said meter being programmed to receive a message characterized by a data rate is one of about 1 Kb/s and about 128 b/s from another meter via said RF transceiver, and to retransmit said message by sending a modified message in a format that is receivable by a node in said AMR network, said modified message being characterized by a data rate of about 100 Kb/s.
- 13. A utility meter as recited in claim 12, wherein said meter is operable to receive messages transmitted with a first prescribed signal type, to transmit responsive messages with a second prescribed signal type, and to repeat messages with said first prescribed signal type.
- 14. A utility meter as recited in claim 13, wherein said first prescribed signal type is ASK and said second prescribed signal type is FSK.
CROSS REFERENCE TO RELATED APPLICATIONS
The subject matter disclosed herein is related to the subject matter of application Ser. No. 08/870,751, filed on Jun. 6, 1997, entitled "Energy Meter with Multiple Protocols for Communication with Local and Wide Area Networks", now abandoned in favor of application Ser. No. 08/908,728, filed Aug. 7, 1997, the disclosure of which is incorporated by reference herein.
US Referenced Citations (26)
Foreign Referenced Citations (5)
Number |
Date |
Country |
0395495 A1 |
Oct 1990 |
EPX |
069098 A2 |
Dec 1994 |
EPX |
59-229949 |
Dec 1984 |
JPX |
5-260569 |
Oct 1993 |
JPX |
02222898 |
Mar 1990 |
GBX |