US 11,658,702 B2
Electric appliance identification method and apparatus
Biwei Song, Dongguan (CN); Hao Zhang, Shenzhen (CN); and Yuming Xie, Nanjing (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Dec. 9, 2021, as Appl. No. 17/547,037.
Application 17/547,037 is a continuation of application No. PCT/CN2020/094991, filed on Jun. 8, 2020.
Claims priority of application No. 201910502300.2 (CN), filed on Jun. 11, 2019.
Prior Publication US 2022/0103203 A1, Mar. 31, 2022
Int. Cl. H04B 3/54 (2006.01); H04B 3/46 (2015.01)
CPC H04B 3/542 (2013.01) [H04B 3/46 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An electric appliance identification method, comprising:
obtaining, by a power line communication (PLC) device, a first noise signal in a circuit;
obtaining, by the PLC device, first data associated with a time-frequency feature of the first noise signal;
obtaining, by the PLC device based on an electric appliance identification model and the first data, an electric appliance identification result corresponding to the first noise signal, wherein the electric appliance identification model is obtained based on a signal comprising a second noise signal of at least one known electric appliance; and
after obtaining the electric appliance identification result corresponding to the first noise signal, sending, by the PLC device, the electric appliance identification result to a terminal device.