Versatile radio packeting for automatic meter reading systems

• US 20070211768A1
• Filed: 02/05/2007
• Published: 09/13/2007
• Est. Priority Date: 02/03/2006
• Status: Active Grant

• Current Assignee: Itron, Inc.
• Original Assignee: Itron, Inc.
• Inventors: Buffington, John, Cornwall, Mark, Johnson, Matt
• Granted Patent: US 7,830,874 B2
• Time in Patent Office: Days
• US Class Current: 370/509
• CPC Class Codes: G01D 4/004 Remote reading of utility meters to a fixed location
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y04S 20/30 Smart metering, e.g. specially adapted for remote reading

Abstract

Methods and systems of providing positive outage notification are described. In some examples, the system determines there is an outage at a facility and transmits multiple messages notifying a utility of the outage. In some examples, the messages are received at multiple message collectors. In some examples, the system determines restoration procedures based on the messages.

Claims

1. A utility meter endpoint for use in an encoder-receiver-transmitter (ERT)-compatible automatic meter reading (AMR) system, comprising:

a utility meter interface that receives utility meter information from a utility meter;

a radio that communicates with the AMR system;

a processor operatively coupled with the utility meter interface and with the radio, wherein the processor converts the utility meter information into packets for transmission by the radio, wherein the packets include a first type of packet that has;

a packet preamble portion that has a frame synchronization bit sequence, a packet type identifier field, and a packet length field, wherein the frame synchronization bit sequence is recognizable by an AMR system receiver that detects a preamble having a value of 0x16A3;

a packet body portion that includes at least an endpoint serial number field and a message; and

a packet validation portion;

wherein the packet body portion has a length that is variable by the processor and the packet length field is set by the processor to represent the length.

2. The utility meter endpoint of claim 1, wherein the frame synchronization bit sequence has a bit sequence consisting of 0x16A3.

3. The utility meter endpoint of claim 1, wherein the packet preamble portion is preceded by a training sequence having a repeating bit pattern of 01.

4. The utility meter endpoint of claim 1, wherein the message includes a message type identifier field and a message value field.

5. The utility meter endpoint of claim 4, wherein the message type identifier field consists of an outage notification code and the message value field includes an outage event counter value.

6. The utility meter endpoint of claim 5, wherein the outage notification code is a byte selected from the group consisting of:

0x50, 0x52, and 0x54.

7. The utility meter endpoint of claim 4, wherein the message type identifier field consists of a restoration code and the message value field includes an outage event counter value.

8. The utility meter endpoint of claim 7, wherein the outage event counter value includes a value representing an elapsed time.

9. The utility meter endpoint of claim 7, wherein the restoration code is a byte selected from the group consisting of:

0x51, 0x53, and 0x55.

10. The utility meter endpoint of claim 1, wherein the packet type identifier field consists of the bit pattern 0x1D.

11. The utility meter endpoint of claim 1, wherein the packet validation portion includes a packet cyclical redundancy check (CRC).

12. The utility meter endpoint of claim 1, wherein the message includes a message cyclical redundancy check (CRC) field that validates contents of the message value field.

13. The utility meter endpoint of claim 1, wherein the packet length field includes a value that represents a length of a remaining portion of the first type of packet that follows the packet length field.

14. The utility meter endpoint of claim 1, wherein the message value field includes at least one originating device sub-field that represents an identification of a device that originated at least a portion of the message.

15. A method of receiving a versatile radio packet over a communication channel in an encoder-receiver-transmitter (ERT)-compatible automatic meter reading (AMR) system, the method comprising:

monitoring the communication channel for incoming data having a bit sequence that substantially includes a frame synchronization sequence having a value of 0x16A3;

in response to detecting of the frame synchronization sequence;

processing a 1-byte packet type ID field that immediately follows the frame synchronization sequence;

in response to detecting of the frame synchronization sequence and a packet type ID field having a value corresponding to a versatile radio packet;

processing a packet length field that immediately follows the packet ID field;

processing a message type identifier field that immediately follows the length field;

processing an endpoint ID field that immediately follows the message type ID field;

processing a serial number field that immediately follows the endpoint ID field; and

processing a message value field having a length corresponding to a remaining packet length value represented by the packet length field;

such that individual information items carried in the versatile radio packet are read to obtain utility meter-related data.

16. The method of claim 15, wherein the monitoring of the communication channel includes buffering the incoming data.

17. The method of claim 15, further comprising:

in response to the detecting of the frame synchronization sequence and the packet type ID field having the value corresponding to a versatile radio packet;

processing a packet CRC field, including computing a packet CRC field based on the processed fields.

18. The method of claim 15, wherein the processing of the message type identifier field includes determining whether a message CRC field is present immediately following the message value field.

19. The method of claim 15, wherein:

the packet type ID field value corresponding to a versatile packet is 0x1D.

20. The method of claim 15, wherein:

the packet length field has a length of 2 bytes;

the message type identifier field has a length of 1 byte; and

the endpoint field has a length of 4 bytes.

21. The method of claim 15, wherein the message value field has a length that can vary depending upon a message type selected from a set of predefined message types;

and

wherein each of the packet length field, the message type identifier field, and the endpoint ID field has a predefined fixed length irrespective of the selected message type.

22. An reader configured to receive a versatile radio packet over a communication channel in an encoder-receiver-transmitter (ERT)-compatible automatic meter reading (AMR) system, the reader comprising:

a receiver interfaced with the communication channel and having a controller, the controller including;

means for monitoring the communication channel to detect incoming data having a bit sequence that substantially includes a frame synchronization sequence having a value of 0x16A3 and, in response to a detection of the frame synchronization sequence, process a 1-byte packet type ID field that immediately follows the frame synchronization sequence;

means for processing a versatile radio packet in response to a detection of the frame synchronization sequence and a packet type ID field having a value corresponding to the versatile radio packet, including;

means for processing a packet length field that immediately follows the packet ID field;

means for processing a message type identifier field that immediately follows the length field;

means for processing an endpoint ID field that immediately follows the message type ID field;

means for processing a serial number field that immediately follows the endpoint ID field; and

means for processing a message value field having a length corresponding to a remaining packet length value represented by the packet length field;

wherein the controller causes the reader to read individual information items carried in the versatile radio packet to obtain utility meter-related data.

23. The reader of claim 22, wherein the receiver includes means for buffering the incoming data.

24. The reader of claim 22, wherein the controller includes means for processing a packet CRC field based on the processed fields.

25. The reader of claim 22, wherein the controller includes means for processing the message type identifier field by at least determining whether a message CRC field is present immediately following the message value field.

26. The reader of claim 22, wherein the controller includes means for processing the versatile message packet in which the packet type ID field value corresponding to a versatile packet is 0x1D.

27. The reader of claim 22, wherein the controller includes means for processing the versatile message packet, in which:

the packet length field has a length of 2 bytes;

the message type identifier field has a length of 1 byte; and

the endpoint field has a length of 4 bytes.

28. The reader of claim 22, wherein controller causes the receiver to process the versatile message packet in which the message value field has a length that can vary depending upon a message type selected from a set of predefined message types;

and

wherein each of the packet length field, the message type identifier field, and the endpoint ID field has a predefined fixed length irrespective of the selected message type.

29. In an encoder-receiver-transmitter (ERT)-based automatic meter reading (AMR) system that utilizes interval daily messaging (IDM) wherein IDM packets have a frame synchronization sequence field of 0x16A3, followed by a packet type ID field, a method of configuring the AMR system to enable receiving a versatile message packet, the method comprising:

configuring a reader to respond to a packet type ID that corresponds to a versatile message packet such that the reader processes a length field that follows the packet ID field to determine a remaining length of the versatile message packet.

30. The method of claim 29, wherein the step of configuring the reader includes:

reading a message type identifier field that follows the length field;

reading an encoder-receiver-transmitter (ERT) ID field that follows the message type ID field;

reading a serial number field that follows the ERT ID field; and

reading a message value field having a length corresponding to the determined length of the versatile message packet.

31. The method of claim 29, wherein the step of configuring the reader includes:

associating a first message type identifier with a first message priority level and a second message type identifier with a second priority level that is different from the first priority level; and

responding to the packet type ID that corresponds to a versatile message packet such that the reader;

reads a message type identifier field that follows the length field; and

compares a value of the message type identifier field with at least one of the first message type identifier and the second message type identifier to determine a priority level at which to process the versatile message packet.

32. A method of data discrimination in a utility meter reading system having a plurality of utility meter endpoints, each endpoint wirelessly transmitting utility meter data to at least one reader to be relayed to a processing center, the method comprising:

receiving, by a reader, data from an endpoint, wherein the data includes at least one type indicator;

receiving, by the reader, type-discriminating information that is indicative of a type of data to be relayed to the processing center;

identifying, by the reader, a first item of utility meter data to be relayed to the processing center based on the type-discriminating information; and

relaying, by the reader, the first item of utility meter data to the processing center.

33. The method of claim 32, wherein the step of receiving the type-discriminating information includes receiving a type-discriminating mask, and wherein the step of identifying the first item of utility meter data includes applying the type-discriminating mask to the data from the endpoint.

34. The method of claim 32, further comprising the step of transmitting the type-discriminating information by the processing center.

35. The method of claim 32, wherein the step of identifying the first item of utility meter data includes comparing a message type indication from the type-discriminating information with a message type indication of the first item of utility meter data.

36. The method of claim 32, further comprising:

transmitting, by a first endpoint of the utility meter reading system, utility meter data having multiple type-indicators; and

managing, by the reader, the multiple type indicators, based on at least one management scheme selected from the group consisting of;

receiving, from a remote source, a logical function indicative of how to apply the type-discriminating information to multiple type-indicators; and

applying a predetermined default logical function that defines how the type-discriminating information is to be applied to multiple type-indicators in an absence of an overriding logical function.

37. An automatic meter reading (AMR) system reader that receives utility consumption information from a plurality of utility meter endpoints via an AMR communication channel, wherein the utility consumption information includes a plurality of data types, the reader being configured to relay certain data items from the utility consumption information to a processing center, the reader comprising:

a radio circuit coupled to the communication channel; and

a controller coupled to the radio circuit, wherein the controller is programmed to cause the reader to;

receive type-discriminating information, wherein the type-discriminating information is indicative of a type of data to be relayed to the processing center;

identify a first item of utility meter data to be relayed to the processing center based on the type-discriminating information; and

relay the first item of utility meter data to the processing center.

38. The AMR system reader of claim 37, wherein the type-discriminating information includes a bit mask.

39. The AMR system reader of claim 37, wherein the controller is programmed to not relay certain items of utility meter data based on the type-discriminating information.

40. The AMR system reader of claim 37, wherein the controller is programmed to manage multiple type indicators in the utility consumption information based on at least one management scheme that is selected from the group consisting of:

(a) being pre-configured in the controller, or (b) being received from a remote source, or both (a) and (b).