US 12,137,504 B2
Identification circuit and method for power-line carrier signal, and integrated circuit chip
Yungen Zou, Fujian (CN); Yuling Lu, Fujian (CN); Shicheng Qiao, Fujian (CN); Ronghuai Cai, Fujian (CN); Mengbang Chen, Fujian (CN); Dandan Zhang, Fujian (CN); and Jinwei Cao, Fujian (CN)
Assigned to CR TECHNOLOGY (PINGTAN) CO., LTD., Fujian (CN)
Appl. No. 17/789,062
Filed by CR TECHNOLOGY (PINGTAN) CO., LTD., Fujian (CN)
PCT Filed Dec. 31, 2019, PCT No. PCT/CN2019/130874
§ 371(c)(1), (2) Date Jun. 24, 2022,
PCT Pub. No. WO2021/134653, PCT Pub. Date Jul. 8, 2021.
Prior Publication US 2023/0049359 A1, Feb. 16, 2023
Int. Cl. H05B 45/30 (2020.01); H05B 45/355 (2020.01); H05B 45/50 (2022.01); H05B 47/185 (2020.01); G01R 19/25 (2006.01)
CPC H05B 45/50 (2020.01) [H05B 45/355 (2020.01); H05B 47/185 (2020.01); G01R 19/2503 (2013.01); G01R 19/2513 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An identification circuit for power-line carrier signals, comprising:
a voltage amplitude detection circuit arranged to connect with a power line and configured to: detect voltage amplitude variation on the power line caused by modulation of data of each of data frames on the power line in a form of a carrier signal as well as duration time, and generate a corresponding level signal;
a decoding circuit connected to the voltage amplitude detection circuit and configured to convert the corresponding level signal to obtain data of a current data frame;
wherein the voltage amplitude detection circuit is specifically configured to:
detect a voltage on the power line, and output the corresponding level signal according to a peak-to-peak value of the voltage and a duration time, wherein:
output a first level signal lasting a second preset duration time if the peak-to-peak value is greater than a preset value and the duration time matches a first preset duration time;
output a second level signal opposite to the first level signal and lasting a fourth preset duration time if the peak-to-peak value is greater than the preset value and the duration time matches a third preset duration time;
output an identification level lasting a sixth preset duration time if the peak-to-peak value is greater than the preset value and the duration time matches a fifth preset duration time, wherein the identification level is the first level signal or the second level signal.