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US 12,137,504 B2Granted
Identification circuit and method for power-line carrier signal, and integrated circuit chip
AssigneeCr Technology (Pingtan) Co., Ltd.
InventorsYungen Zou, Yuling Lu, Shicheng Qiao, Ronghuai Cai, Mengbang Chen, Dandan Zhang, Jinwei Cao
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Abstract
The present application discloses an identification circuit for a power-line carrier signal. During signal transmission on a power line, the amplitude change and duration of a voltage signal on the power line are identified and then decoded into corresponding data, so as to reduce dependency on a power supply voltage during signal identification, and prevent the signal identification rate from decreasing as a result of an increase in the transmission distance, thereby reducing requirements for a system power supply.
Claims17
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.
5 more elements
An identification method for power-line carrier signals, comprising:
- detecting voltage amplitude variation on a 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 generating a corresponding level signal;
- converting the corresponding level signal to obtain data of a current data frame, wherein the detecting 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 generating the corresponding level signal comprises:
- detecting a voltage on the power line, and outputting the corresponding level signal according to a peak-to-peak value of the voltage and a duration time, wherein:
- outputting 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;
- outputting 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;
- outputting 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.
3 more elements
An integrated circuit chip, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements steps of:
- detecting voltage amplitude variation on a power line caused by modulation of data of each of data frames on a power line in a form of a carrier signal as well as duration time, and generating a corresponding level signal;
- converting the corresponding level signal to obtain data of a current data frame, wherein the detecting 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 generating the corresponding level signal comprises:
- detecting a voltage on the power line, and outputting the corresponding level signal according to a peak-to-peak value of the voltage and a duration time, wherein:
- outputting 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;
- outputting 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;
- outputting 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.
3 more elements
Dependencies are inferred from the claim text.