METHOD OF INFERENCE OF APPLIANCE USAGE. DATA PROCESSING APPARATUS AND/OR COMPUTER SOFTWARE
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United States of America Patent
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Issued Date -
Jan 6, 2011
app pub date -
Feb 20, 2009
filing date -
Feb 21, 2008
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Abandoned
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Abstract
A method of inference of appliance usage from a point measurement on a supply line, said supply line being common to multiple appliances and/or components of appliances comprises the steps of: obtaining data from said measurement point; sampling power and reactive power at intervals substantially throughout periods of operation of said appliances or components of appliances corresponding to appliances or components of appliances being in ON and/or OFF modes of use; identifying characteristics of events by assessing power and reactive power change during an event; and by assessing one or more additional characteristics derivable from said power and reactive power to characterise an appliance; grouping events and/or cycles of events into clusters of similar characteristics; and inferring appliance usage based on said grouping.
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