Utility meter having data logging with power loss recovery
First Claim
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1. A method for storing information within a utility meter, comprising:
- storing a load profile data stream comprising a plurality of data values relating to at least one metered quantity delivered to a load corresponding to a plurality of sequential time periods, wherein the plurality of data values are stored sequentially in adjacent memory locations based on their corresponding time periods;
responsive to a power restoration after a power outage, determining an end time for a power outage time period, wherein the power outage time period is a time period in which the power outage occurred;
comparing the end time for the power outage time period with a current time; and
when the current time is more than one time period past the end time for the power outage time period, inserting into the load profile data stream a time stamp corresponding to the end time for the power outage time period.
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Abstract
A method for storing information within a utility meter that includes storing a data stream comprising a plurality of data values regarding a metered quantity delivered to a load corresponding to a plurality of time periods, wherein the plurality of data values are stored sequentially based on their corresponding time periods. The method also includes responsive to a power outage, inserting into the data stream a time stamp corresponding to a time period in the plurality of time periods in which the power outage occurred.
27 Citations
18 Claims
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1. A method for storing information within a utility meter, comprising:
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storing a load profile data stream comprising a plurality of data values relating to at least one metered quantity delivered to a load corresponding to a plurality of sequential time periods, wherein the plurality of data values are stored sequentially in adjacent memory locations based on their corresponding time periods; responsive to a power restoration after a power outage, determining an end time for a power outage time period, wherein the power outage time period is a time period in which the power outage occurred; comparing the end time for the power outage time period with a current time; and when the current time is more than one time period past the end time for the power outage time period, inserting into the load profile data stream a time stamp corresponding to the end time for the power outage time period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 18)
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9. A metering circuit, comprising:
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a metrology circuit operably coupled to a load, the metrology circuit configured to generate energy consumption values based on the voltage and current provided to the load; at least one memory; and a processing circuit configured to generate information regarding a metered quantity delivered to a load corresponding to each of a plurality of sequential time periods; store, in the at least one memory, a load profile data stream comprising a plurality of data values regarding the metered quantity corresponding to the plurality of sequential time periods, wherein the plurality of data values are stored in sequential memory locations based on their corresponding time periods; responsive to a power restoration after a power outage, determine an end time for a power outage time period, wherein the power outage time period is a time period in which the power outage occurred; compare the end time for the power outage time period with a current time; and when the current time is more than one time period past the end time for the power outage time period, insert into the load profile data stream a time stamp corresponding to the end time for the power outage time period. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification