Patent ID: 8237586

Claim:
An electric appliance status recognition method, suitable for detecting n electric appliances in a loop according to a single power consumption factor, wherein the electric appliances respectively have a plurality of statuses, and n is a positive integer, the electric appliance status recognition method comprising: obtaining a variation of the power consumption factor on each of the electric appliances in each of the statuses to establish a status power consumption probability distribution of the electric appliance in the status; permuting the statuses of the electric appliances to generate a plurality of status combinations of the electric appliances; establishing a combined power consumption probability distribution of each of the status combinations by using the status power consumption probability distribution of each of the electric appliances in one of the statuses within the status combination; establishing a mapping relationship between the status combinations and a plurality of reference values of the power consumption factor according to the combined power consumption probability distributions of the status combinations; detecting a current measurement of the power consumption factor of the loop; and comparing the current measurement with the reference values to determine the status combination corresponding to the electric appliances.