Prioritized collection of meter readings

• US 8,436,744 B2
• Filed: 01/29/2009
• Issued: 05/07/2013
• Est. Priority Date: 01/29/2009
• Status: Active Grant

• Current Assignee: Itron, Inc.
• Original Assignee: Itron, Inc.
• Inventors: Cornwall, Mark, Johnson, Matthew
• Primary Examiner(s): Barnie, Rexford
• Assistant Examiner(s): CLARK, CHRISTOPHER JAY
• Application Number:
  US12/362,447
• Publication Number:
  US 20100188263A1
• Time in Patent Office: 1,559 Days
• Field of Search: 340/870.02, 340/870.03
• US Class Current: 340/870.02
• CPC Class Codes: G01D 4/006 Remote reading of utility meters to a non-fixed location, i.e. mobile 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

Generally described, the disclosed subject matter is directed to improving the collection of GDT meter readings. In accordance with one embodiment, a method is provided for prioritizing the transmission and process of GDT meter readings in an AMR system. In particular, the method includes capturing a GDT meter reading that quantifies the consumption of a utility service at a utility meter. Then, during a reporting window, one or more packets of the GDT meter reading having a data item that identifies the enhanced priority level of the data is transmitted from the utility meter. When a collector receives the transmission, the elevated priority allocated to the transmission is identified. As a result, the collector causes the GDT meter reading to be forwarded to a host computer prior to the processing and transmission of other meter readings.

Claims

1. In a metering system that includes a utility meter and a collector configured to exchange data, a method of prioritizing the collection of GDT meter readings, the method comprising:

at the utility meter, capturing a GDT meter reading that quantifies the consumption of a utility service;

allocating with a data item the captured GDT meter reading an enhanced priority level relative to other transmissions from the meter;

during a reporting window, transmitting a packet containing the GDT meter reading and the data item that identifies the enhanced priority level of the GDT meter reading transmission; and

at the collector, receiving the transmission of the GDT meter reading, identifying the elevated priority allocated to the transmission, and causing the GDT meter reading to be forwarded from the collector to a host computer prior to the processing and transmission of other meter readings.

2. The method as recited in claim 1, further comprising determining whether the GDT meter reading was successfully received at the host computer during the reporting window and, if the GDT meter reading was not successfully received, causing the utility meter to transmit a secondary GDT meter reading.

3. The method as recited in claim 2, wherein determining whether the GDT meter reading was successfully received at the host computer includes maintaining a list that identifies each utility meter in which at least one GDT meter reading has been received during the reporting window.

4. The method as recited in claim 1, further comprising:

identifying a set of parameters for transmitting GDT meter readings from the utility meter to improve the rate in which the GDT meter readings are collected by the host computer; and

reprogram the utility meter to transmit GDT meter readings in accordance with the identified parameters.

5. The method as recited in claim 4, wherein the set of parameters reprogrammed at the utility meter include at least one parameter from the group consisting of increasing the frequency of transmission, extending the duration of the reporting window, and modifying the time when the reporting window is opened.

6. The method as recited in claim 1, wherein capturing a GDT meter reading that quantifies the consumption of a utility service includes synchronizing the time maintained by the utility meter with a time maintained by a remote device and wherein the time when the GDT meter reading is captured occurs at the same time across a plurality of utility meters.

7. The method as recited in claim 1, wherein transmitting a packet of the GDT meter reading includes encoding the GDT meter reading into an encapsulated format that is suitable for transmission over a wireless network.

8. The method as recited in claim 1, wherein the packet containing the GDT meter reading is repeatedly transmitted during the reporting window at a rate that is higher than the rate of transmission for meter readings allocated a lower priority.

9. A utility meter configured to report GDT meter readings, comprising:

a processor;

a clock for maintaining a current time;

a radio-based communication device for communicating data between the utility meter and a remote device;

a computer-readable media having computer-executable instructions that, when executed by the processor, cause the utility meter to;

capture a GDT meter reading that quantifies the consumption of a utility service over a GDT interval, wherein to capture the GDT meter reading includes using the clock to synchronize the GDT meter reading with a meter reading performed on at least one remote utility meter;

allocate the encoded GDT meter reading an enhanced priority level relative to other transmissions from the meter;

encode the GDT meter reading into a format that is suitable for network transmission using the radio-based communication device; and

during a reporting window, periodically transmit the encoded GDT meter reading at a rate that is more frequent than transmissions allocated a lower priority level.

10. The utility meter as recited in claim 9, wherein the utility meter is configured to modify the rate at which the GDT meter reading is transmitted during the reporting window.

11. The utility meter as recited in claim 9, wherein the utility meter is configured to modify the duration of the reporting window in which GDT meter readings are transmitted.

12. The utility meter as recited in claim 9, wherein the utility meter is configured to modify the time when GDT meter readings that quantify the consumption of a utility service are captured.

13. The utility meter as recited in claim 9, wherein the utility meter is configured to transmit a secondary GDT meter reading that quantifies the consumption of a utility service over the GDT interval in response to receiving a command from a remote device.

14. A metering system for collecting GDT meter readings, comprising:

at least one utility meter configured to capture a GDT meter reading that quantifies the consumption of a utility service over a GDT interval;

the said at least one utility meter also configured to allocate the captured GDT meter reading an enhanced priority level relative to other transmissions from the meter;

a collector configured to receive a GDT meter reading transmitted by the utility meter, identify the enhanced priority level allocated to the transmission, and process the GDT meter reading for subsequent routing to a host computer in accordance with the identified enhanced priority level; and

a host computer operative to track whether a GDT meter reading originating from the utility meter was successfully collected, and if a GDT meter reading originating from the utility meter was not successfully collected, generate and transmit a query via the collector that causes the utility meter to transmit a secondary GDT meter reading.

15. The metering system as recited in claim 14, further comprising at least one distribution utility meter configured to capture a distribution meter reading that quantifies the amount of a utility service input into a utility distribution infrastructure and wherein the host computer is further configured to determine whether discrepancies exist between the amount of utility service input into the utility distribution infrastructure and the amount reported in a set of GDT meter readings.

16. The metering system as recited in claim 14, wherein the collector is configured to forward the GDT meter reading to the host computer upon receipt without aggregating GDT meter readings received from a plurality of utility meters.

17. The metering system as recited in claim 14, wherein the collector is configured to aggregate GDT meter readings received from a plurality of utility meters before routing the aggregated data to the host computer.

18. The metering system as recited in claim 14, wherein the host computer is further configured to:

determine whether the success rate for collecting meter readings during a GDT interval is below a defined threshold;

if the success rate is below the defined threshold, identify a set of parameters for transmitting the GDT meter reading from a utility meter that improves the probability of collecting the transmissions at the host computer; and

generate and transmit a command that reprograms the utility meter to transmit GDT meter readings in accordance with the identified parameters.

19. The metering system as recited in claim 18, wherein the set of parameters reprogrammed at the utility meter include at least one parameter from the group consisting of increasing the frequency of transmission, extending the duration of the reporting window, and modifying the time when the reporting window is opened.

20. The metering system as recited in claim 14, wherein the host computer is further configured to identify the enhanced priority level allocated to a received GDT meter reading and process the GDT meter readings at a higher priority relative to other meter readings.