CN107005276B - Gateway side power line communication PLC subsystem, gateway and coupling decoupler - Google Patents
Gateway side power line communication PLC subsystem, gateway and coupling decoupler Download PDFInfo
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- CN107005276B CN107005276B CN201580064341.8A CN201580064341A CN107005276B CN 107005276 B CN107005276 B CN 107005276B CN 201580064341 A CN201580064341 A CN 201580064341A CN 107005276 B CN107005276 B CN 107005276B
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Abstract
A gateway side power line communication PLC subsystem, a gateway and a coupling decoupler occupy fewer power interfaces and are higher in reliability. The subsystem comprises a gateway, a coupler and a decoupling decoupler, wherein the gateway is used for modulating first network data received from a network to obtain a first high-frequency signal and outputting the first high-frequency signal to the coupler decoupler; demodulating the second high-frequency signal received from the coupling decoupler to obtain second network data, and sending the second network data to the network; the coupling decoupler is used for coupling the first high-frequency signal received from the gateway to a power supply signal transmitted by the power line and transmitting the first high-frequency signal through the power line; decoupling the second high-frequency signal from a coupling signal of the power supply signal and the second high-frequency signal received from the power line, and outputting the second high-frequency signal to the gateway; and the power supply signal is converted into a power supply signal and output to the gateway to supply power to the gateway.
Description
Technical Field
The invention relates to the technical field of electric communication, in particular to a Power Line Communication (PLC) subsystem at the gateway side, a gateway and a coupling decoupler.
Background
The PLC technology is a communication technology for data transmission using a power line as a transmission medium, and any one of power interfaces can be converted into a network port through a PLC modem.
A PLC system networking is shown in figure 1 and comprises a gateway side PLC subsystem and a terminal side PLC subsystem, wherein the gateway side PLC subsystem comprises a traditional gateway and a PLC modem, and the terminal side PLC subsystem comprises a terminal and a PLC modem. When a terminal transmits data to a traditional gateway, a PLC modem at the terminal side modulates the data to be transmitted input by the terminal to obtain a high-frequency signal, couples the high-frequency signal to a power signal transmitted by a power line, and transmits the high-frequency signal by using the power line; the gateway side PLC modem receives the coupling signal of the high-frequency signal and the power supply signal through the power line, decouples the high-frequency signal, demodulates the high-frequency signal to obtain data to be transmitted, and outputs the data to the traditional gateway, namely, the terminal transmits the data to the traditional gateway; similarly, the traditional gateway can also transmit data to the terminal.
Because the gateway side PLC modem needs to occupy one power interface, and the conventional gateway power supply also needs to occupy one power interface, in order to save the power interface and reduce the wiring complexity, in the prior art, the conventional gateway and the gateway side PLC modem are usually integrated into one device, as shown in fig. 2, however, the power consumption and the temperature of the integrated device of the conventional gateway and the gateway side PLC modem are inevitably large, and thus the device reliability is low.
Disclosure of Invention
The embodiment of the invention provides a gateway side PLC subsystem, a gateway and a coupling decoupler, which not only occupy fewer power interfaces, but also have higher reliability.
In a first aspect, a gateway-side PLC subsystem is provided, which includes a gateway and a coupling decoupler, wherein:
the gateway is used for modulating first network data received from a network to obtain a first high-frequency signal and outputting the first high-frequency signal to the coupling decoupler; demodulating a second high-frequency signal received from the coupling decoupler to obtain second network data, and sending the second network data to the network;
the coupling decoupler is used for coupling a first high-frequency signal received from the gateway to a power supply signal transmitted by a power line and transmitting the first high-frequency signal through the power line; and decoupling the second high frequency signal from a coupling signal of the power supply signal and the second high frequency signal received from the power line, and outputting the second high frequency signal to the gateway; and the power supply signal is converted into a power supply signal and is output to the gateway to supply power to the gateway.
With reference to the first aspect, in a first possible implementation manner, the gateway and the coupling decoupler are connected by a hybrid cable, where the hybrid cable includes a high-frequency signal transmission line and a gateway power supply signal transmission line.
With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the gateway specifically includes a signal processing unit and a wire system conversion unit, where:
the signal processing unit is used for modulating the first network data to obtain a first high-frequency signal; the wire system conversion unit is used for providing an output channel for the signal processing unit and outputting the first high-frequency signal to the coupling decoupler;
the wire system conversion unit is further used for providing an input channel for the signal processing unit and inputting the second high-frequency signal to the signal processing unit; the signal processing unit is further configured to demodulate the second high-frequency signal to obtain second network data.
With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner, the wire system converting unit is specifically configured to provide multiple output channels for the signal processing unit, and provide multiple input channels for the signal processing unit.
With reference to the second possible implementation manner of the first aspect or the third possible implementation manner of the first aspect, in a fourth possible implementation manner, the line system conversion unit is specifically a cascade transformer.
With reference to the second possible implementation manner of the first aspect, the third possible implementation manner of the first aspect, or the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner, the gateway specifically further includes:
the detection unit is used for acquiring the frequency of the power supply signal;
the signal processing unit is further configured to determine a modulation parameter and a demodulation parameter according to the frequency of the power signal.
With reference to the first aspect, the first possible implementation manner of the first aspect, the second possible implementation manner of the first aspect, the third possible implementation manner of the first aspect, the fourth possible implementation manner of the first aspect, or the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner, the coupling decoupler specifically includes a high-pass filtering unit, a low-pass filtering unit, and a rectifying unit;
the high-pass filtering unit is used for injecting the first high-frequency signal into the power line in an isolation manner; filtering the power supply signal in the coupling signal to obtain the second high-frequency signal;
the low-pass filtering unit is used for acquiring the power supply signal from the signal transmitted by the power line;
the rectifying unit is used for converting the power supply signal acquired by the low-pass filtering unit into the power supply signal.
With reference to the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner, the high-pass filtering unit is specifically a transformer; the low-pass filtering unit is specifically an electromagnetic interference (EMI) filter.
With reference to the sixth possible implementation manner of the first aspect or the seventh possible implementation manner of the first aspect, in an eighth possible implementation manner, the coupling decoupler specifically further includes:
and the sampling unit is used for sampling the power supply signal acquired by the low-pass filtering unit and outputting a sampling signal to the gateway.
With reference to the eighth possible implementation manner of the first aspect, in a ninth possible implementation manner, the sampling unit is specifically a photocoupler.
In a second aspect, there is provided a gateway comprising:
transceiving means for receiving first network data from a network; and sending second network data to the network;
the modulation and demodulation device is used for modulating the first network data to obtain a first high-frequency signal and outputting the first high-frequency signal to the coupling decoupler; and demodulating the second high-frequency signal received from the coupling decoupler to obtain the second network data.
With reference to the second aspect, in a first possible implementation manner, the gateway and the coupling decoupler are connected by a hybrid cable, where the hybrid cable includes a high-frequency signal transmission line and a gateway power supply signal transmission line.
With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner, the modulation and demodulation apparatus specifically includes a signal processing unit and a line system conversion unit, where:
the signal processing unit is used for modulating the first network data to obtain a first high-frequency signal; the wire system conversion unit is used for providing an output channel for the signal processing unit and outputting the first high-frequency signal to the coupling decoupler;
the wire system conversion unit is further used for providing an input channel for the signal processing unit and inputting the second high-frequency signal to the signal processing unit; the signal processing unit is further configured to demodulate the second high-frequency signal to obtain second network data.
With reference to the second possible implementation manner of the second aspect, in a third possible implementation manner, the wire system converting unit is specifically configured to provide multiple output channels for the signal processing unit, and provide multiple input channels for the signal processing unit.
With reference to the second possible implementation manner of the second aspect or the third possible implementation manner of the second aspect, in a fourth possible implementation manner, the line system conversion unit is specifically a cascade transformer.
With reference to the second possible implementation manner of the second aspect, the third possible implementation manner of the second aspect, or the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner, the modulation and demodulation apparatus specifically includes:
the detection unit is used for acquiring the frequency of the power supply signal;
the signal processing unit is further configured to determine a modulation parameter and a demodulation parameter according to the frequency of the power signal.
In a third aspect, a coupling decoupler is provided, comprising:
the coupling and decoupling device is used for coupling a first high-frequency signal received from the gateway to a power supply signal transmitted by a power line and transmitting the first high-frequency signal through the power line; and decoupling a second high frequency signal from a coupling signal of the power supply signal and the second high frequency signal received from the power line, and outputting the second high frequency signal to the gateway;
and the power supply device is used for converting the power supply signal into a power supply signal, outputting the power supply signal to the gateway and supplying power to the gateway.
With reference to the third aspect, in a first possible implementation manner, the gateway and the coupling decoupler are connected by a hybrid cable, where the hybrid cable includes a high-frequency signal transmission line and a gateway power supply signal transmission line.
With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner, the coupling and decoupling device is specifically a high-pass filtering unit, and is configured to separately inject the first high-frequency signal into the power line; filtering the power supply signal in the coupling signal to obtain the second high-frequency signal;
the power supply device specifically comprises a low-pass filtering unit and a rectifying unit, wherein:
the low-pass filtering unit is used for acquiring the power supply signal from the signal transmitted by the power line;
the rectifying unit is used for converting the power supply signal acquired by the low-pass filtering unit into the power supply signal.
With reference to the second possible implementation manner of the third aspect, in a third possible implementation manner, the high-pass filtering unit is specifically a transformer; the low-pass filtering unit is specifically an electromagnetic interference (EMI) filter.
With reference to the second possible implementation manner of the third aspect or the third possible implementation manner of the third aspect, in a fourth possible implementation manner, the power supply device specifically further includes:
and the sampling unit is used for sampling the power supply signal acquired by the low-pass filtering unit and outputting a sampling signal to the gateway.
With reference to the fourth possible implementation manner of the third aspect, in a fifth possible implementation manner, the sampling unit is specifically a photocoupler.
According to the gateway-side PLC subsystem provided in the first aspect, the gateway provided in the second aspect, and the coupling decoupler provided in the third aspect, the coupling decoupling processing of the signal is completed in one device, that is, the coupling decoupler, and the modulation and demodulation processing of the signal and the reception and transmission of the network data are completed in another device, that is, the gateway, and the coupling decoupler can complete the conversion of the gateway power supply, and the coupling decoupler supplies power to the gateway; obviously, the gateway side PLC subsystem provided by the embodiment of the invention only occupies one power interface, and simultaneously, the problems of overlarge power consumption, overhigh temperature and higher reliability of a single device are avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is one of schematic networking diagrams of a PLC system in the prior art;
fig. 2 is a second schematic diagram of a PLC system networking in the prior art;
fig. 3 is a schematic diagram of a gateway-side PLC subsystem according to an embodiment of the present invention;
fig. 4 is a detailed schematic diagram of a gateway-side PLC subsystem according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a wire system conversion unit according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a gateway according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a coupling decoupler according to an embodiment of the invention.
Detailed Description
In order to provide improved reliability, the embodiment of the present invention provides a gateway-side PLC subsystem, a gateway and a coupling decoupler, and the following description is made in conjunction with the accompanying drawings, it should be understood that the preferred embodiments described herein are only for illustrating and explaining the present invention and are not intended to limit the present invention. And the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
An embodiment of the present invention provides a gateway-side PLC subsystem, as shown in fig. 3, including: a gateway 301 and a coupling decoupler 302, wherein:
the gateway 301 is configured to modulate first network data received from a network to obtain a first high-frequency signal, and output the first high-frequency signal to the coupling decoupler 302; demodulating the second high-frequency signal received from the coupling decoupler 302 to obtain second network data, and sending the second network data to the network;
a coupling decoupler 302, configured to couple the first high-frequency signal received from the gateway 301 to a power signal transmitted by the power line, and transmit the first high-frequency signal through the power line; and decoupling the second high frequency signal from the coupled signal of the power supply signal and the second high frequency signal received from the power line, and outputting the second high frequency signal to the gateway 301; and is also used for converting the power signal into a power supply signal, outputting the power supply signal to the gateway 301, and supplying power to the gateway 301.
In this embodiment of the present invention, as shown in fig. 4, the gateway 301 specifically includes a signal processing unit 3011 and a line system conversion unit 3012, where:
the signal processing unit 3011 is configured to perform modulation processing on the first network data to obtain a first high-frequency signal; a line system conversion unit 3012, configured to provide an output channel for the signal processing unit 3011, and output a first high-frequency signal;
the line system conversion unit 3012 is further configured to provide an input channel for the signal processing unit 3011, and input the second high-frequency signal; the signal processing unit 3011 is further configured to perform demodulation processing on the second high-frequency signal to obtain second network data.
If the power interface of the coupling decoupler 302 connected to the power line is specifically a two-pin interface, the high-frequency signals between the gateway 301 and the coupling decoupler 302, i.e., the first high-frequency signal and the second high-frequency signal, are transmitted through two lines, i.e., the live line L and the zero line N. At this time, the line system conversion unit 3012 may perform conversion from two lines to four lines, and provide one input channel and one output channel for the signal processing unit 3011.
Preferably, the line system conversion unit 3012, in particular, the signal processing unit 3011 provides multiple output channels and multiple input channels. Wherein the output channels and the input channels should be present in pairs, i.e. the number of output channels and the number of input channels are the same.
In a specific implementation, the power interface of the coupling decoupler 302 connected to the power line may be a three-pin interface, and as shown in fig. 4, the high-frequency signal between the gateway 301 and the coupling decoupler 302, that is, the first high-frequency signal and the second high-frequency signal, are transmitted through three lines, i.e., a live line L, a zero line N, and a ground line E. At this time, the system-of-wires conversion unit 3012 may complete conversion from three wires to eight wires, and provide two input channels and two output channels for the signal processing unit 3011; or, the line system conversion unit 3012 completes conversion from three lines to twelve lines, and provides three input channels and three output channels for the signal processing unit 3011, and so on, which is not illustrated.
Further, the wire system converting unit 3012 may be specifically a cascaded transformer.
For example, with the cascaded transformer shown in fig. 5, a three-to-eight line conversion in fig. 4 can be achieved. The cascade transformer specifically comprises two transformers, namely a first transformer and a second transformer, wherein each transformer comprises two first-stage coils 1-2 and 3-4 and two second-stage coils 5-6 and 7-8, and the two first-stage coils and the two second-stage coils are respectively connected with the first transformer and the second transformer, wherein:
two first-stage coils of each transformer are connected in series; the wiring terminals of the two first-stage coils in the first transformer are connected with the homonymous terminals of the two first-stage coils in the second transformer after being connected in series;
the synonym end of the two first-stage coils in the first transformer after being connected in series is used as a live wire L terminal of the wire system conversion unit 3012, the homonymous end of the two first-stage coils in the first transformer after being connected in series is used as a zero line N terminal of the wire system conversion unit 3012, and the synonym end of the two first-stage coils in the second transformer after being connected in series is used as a ground wire E terminal of the wire system conversion unit 3012;
the terminals of two second-stage coils in the first transformer are connected with the signal processing unit 3011, and a first output channel TX1 and a first input channel RX1 are provided for the signal processing unit 3011; the terminals of the two second-stage coils in the second transformer are connected with the signal processing unit 3011, and a second output channel TX2 and a second input channel RX2 are provided for the signal processing unit 3011.
In the two transformers, the first-stage coil may be a primary coil, and the second-stage coil is a secondary coil; the first-stage coil can be a secondary coil, and the second-stage coil can be a primary coil; the invention is not limited in this regard.
Preferably, the gateway 301 further includes:
a detection unit 3013 configured to obtain a frequency of the power supply signal;
the signal processing unit 3011 is further configured to determine a modulation parameter and a demodulation parameter according to the frequency of the power supply signal.
The modem principle of the signal processing unit 3011 in the gateway 301 is the same as that in the PLC modem of the related art, and will not be described in detail here.
In the embodiment of the present invention, as shown in fig. 4, the coupling decoupler 302 specifically includes a high-pass filtering unit 3021, a low-pass filtering unit 3022, and a rectifying unit 3023;
a high-pass filtering unit 3021 for injecting the first high-frequency signal into the power line in an isolated manner; filtering the power supply signal in the coupling signal of the power supply signal and the second high-frequency signal to obtain a second high-frequency signal;
a low-pass filtering unit 3022 for obtaining a power supply signal from the power line transmission signal;
a rectifying unit 3023, configured to convert the power supply signal acquired by the low-pass filtering unit 3022 into a power supply signal.
The high-pass filtering unit 3021 may be, but is not limited to, a transformer.
The low-pass filtering unit 3022 may be, but is not limited to, an electromagnetic interference (EMI) filter.
Preferably, the coupling decoupler 302 further includes:
the sampling unit 3024 is configured to sample the power supply signal acquired by the low-pass filtering unit 3022, and output the sampled signal to the gateway 301.
The detection unit 3013 in the gateway 301 may receive the sampling signal output by the sampling unit 3024, and obtain the frequency of the power supply signal based on the sampling signal; the subsequent signal processing unit 3011 may determine modulation parameters and demodulation parameters according to the frequency of the power signal.
The sampling unit 3021 may be, but is not limited to, a photocoupler.
In practical implementation, in the gateway-side PLC subsystem provided in the embodiment of the present invention, the gateway 301 and the coupling decoupler 302 may be connected by a hybrid cable.
For example, in the gateway-side PLC subsystem shown in fig. 4, the power interface of the coupling decoupler 302 connected to the power line is specifically a three-pin interface, and the hybrid cable may specifically include seven wires, three high-frequency signal transmission lines L, N, E, two gateway power supply signal transmission lines V +, V-, a power signal sampling signal transmission line D, and a shielding ground line (not shown).
In other embodiments of the present invention, if the power interface of the coupling decoupler 302 connected to the power line is specifically a two-pin interface, the hybrid cable may specifically include six wires, two high-frequency signal transmission lines L, N, two gateway power supply signal transmission lines V +, V-, a power signal sampling signal transmission line D, and a shielding ground line.
In summary, the gateway-side PLC subsystem provided in the embodiment of the present invention completes the coupling and decoupling processing of the signal in one device, that is, the coupling and decoupling device, and completes the modulation and demodulation processing of the signal and the receiving and sending of the network data in another device, that is, the gateway, and the coupling and decoupling device can complete the conversion of the gateway power supply, and the coupling and decoupling device supplies power to the gateway; obviously, the gateway side PLC subsystem provided by the embodiment of the invention only occupies one power interface, and simultaneously, the problems of overlarge power consumption, overhigh temperature and higher reliability of a single device are avoided. And the signal voltage corresponding to the coupling decoupling processing is higher, and the signal voltage corresponding to the modulation and demodulation processing is lower.
Based on the same inventive concept, the embodiment of the present invention further provides a gateway, as shown in fig. 6,
a transceiver 601, configured to receive first network data from a network; and sending the second network data to the network;
a modulation and demodulation device 602, configured to perform modulation processing on the first network data to obtain a first high-frequency signal, and output the first high-frequency signal to the coupling decoupler; and demodulating the second high-frequency signal received from the coupling decoupler to obtain second network data.
The gateway and the coupling decoupler are connected through a hybrid cable, and the hybrid cable comprises a high-frequency signal transmission line and a gateway power supply signal transmission line. Namely, high-frequency signals are transmitted between the gateway and the coupling decoupler, and the gateway is also powered by the coupling decoupler.
Further, the modem apparatus 602 specifically includes a signal processing unit and a line system converting unit, where:
the signal processing unit is used for modulating the first network data to obtain a first high-frequency signal; the system conversion unit is used for providing an output channel for the signal processing unit and outputting the first high-frequency signal to the coupling decoupler;
the wire system conversion unit is also used for providing an input channel for the signal processing unit and inputting the second high-frequency signal to the signal processing unit; and the signal processing unit is also used for demodulating the second high-frequency signal to obtain second network data.
Preferably, the wire system conversion unit is specifically configured to provide multiple output channels for the signal processing unit and multiple input channels for the signal processing unit.
The wire system conversion unit is specifically a cascade transformer.
Preferably, the modem apparatus 602 further includes:
the detection unit is used for acquiring the frequency of the power supply signal;
and the signal processing unit is also used for determining a modulation parameter and a demodulation parameter according to the frequency of the power supply signal.
Based on the same inventive concept, the embodiment of the present invention further provides a coupling decoupler, as shown in fig. 7,
a coupling and decoupling device 701, configured to couple a first high-frequency signal received from the gateway to a power signal transmitted by the power line, and send the first high-frequency signal through the power line; decoupling the second high-frequency signal from a coupling signal of the power supply signal and the second high-frequency signal received from the power line, and outputting the second high-frequency signal to the gateway;
and the power supply device 702 is configured to convert the power signal into a power supply signal, output the power supply signal to the gateway, and supply power to the gateway.
The gateway and the coupling decoupler are connected through a hybrid cable, and the hybrid cable comprises a high-frequency signal transmission line and a gateway power supply signal transmission line.
Further, the coupling and decoupling device 701 is specifically a high-pass filtering unit, and is used for injecting the first high-frequency signal into the power line in an isolated manner; filtering a power supply signal in the coupling signal to obtain a second high-frequency signal;
the power supply device 702 specifically includes a low-pass filtering unit and a rectifying unit, wherein:
the low-pass filtering unit is used for acquiring a power supply signal from a signal transmitted by a power line;
and the rectifying unit is used for converting the power supply signal acquired by the low-pass filtering unit into a power supply signal.
The high-pass filtering unit is specifically a transformer; the low-pass filtering unit is specifically an electromagnetic interference (EMI) filter.
Preferably, the power supply device 702 further includes:
and the sampling unit is used for sampling the power supply signal acquired by the low-pass filtering unit and outputting the sampling signal to the gateway.
Wherein, the sampling unit is specifically a photoelectric coupler.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.
Claims (23)
1. A gateway side Power Line Communication (PLC) subsystem, comprising a gateway and a coupling decoupler, wherein:
the gateway is used for modulating first network data received from a network to obtain a first high-frequency signal and outputting the first high-frequency signal to the coupling decoupler; demodulating a second high-frequency signal received from the coupling decoupler to obtain second network data, and sending the second network data to the network;
the coupling decoupler is used for coupling a first high-frequency signal received from the gateway to a power supply signal transmitted by a power line and transmitting the first high-frequency signal through the power line; and decoupling the second high frequency signal from a coupling signal of the power supply signal and the second high frequency signal received from the power line, and outputting the second high frequency signal to the gateway; and the power supply signal is converted into a power supply signal and is output to the gateway to supply power to the gateway.
2. The system of claim 1, wherein the gateway and the coupling decoupler are connected by a hybrid cable, the hybrid cable including a high frequency signal transmission line and a gateway power supply signal transmission line.
3. The system of claim 1, wherein the gateway specifically comprises a signal processing unit and a wire system conversion unit, wherein:
the signal processing unit is used for modulating the first network data to obtain a first high-frequency signal; the wire system conversion unit is used for providing an output channel for the signal processing unit and outputting the first high-frequency signal to the coupling decoupler;
the wire system conversion unit is further used for providing an input channel for the signal processing unit and inputting the second high-frequency signal to the signal processing unit; the signal processing unit is further configured to demodulate the second high-frequency signal to obtain second network data.
4. The system of claim 3, wherein the wire system conversion unit is specifically configured to provide multiple output channels for the signal processing unit and multiple input channels for the signal processing unit.
5. System according to claim 3 or 4, characterized in that the wire system conversion unit is embodied as a cascade transformer.
6. The system of claim 3 or 4, wherein the gateway further comprises:
the detection unit is used for acquiring the frequency of the power supply signal;
the signal processing unit is further configured to determine a modulation parameter and a demodulation parameter according to the frequency of the power signal.
7. The system according to any of claims 1 to 4, characterized in that said coupling decoupler, in particular, comprises a high-pass filtering unit, a low-pass filtering unit and a rectifying unit;
the high-pass filtering unit is used for injecting the first high-frequency signal into the power line in an isolation manner; filtering the power supply signal in the coupling signal to obtain the second high-frequency signal;
the low-pass filtering unit is used for acquiring the power supply signal from the signal transmitted by the power line;
the rectifying unit is used for converting the power supply signal acquired by the low-pass filtering unit into the power supply signal.
8. The system according to claim 7, wherein the high-pass filtering unit is in particular a transformer; the low-pass filtering unit is specifically an electromagnetic interference (EMI) filter.
9. The system of claim 7, wherein the coupling decoupler, in particular, further comprises:
and the sampling unit is used for sampling the power supply signal acquired by the low-pass filtering unit and outputting a sampling signal to the gateway.
10. The system of claim 8, wherein the coupling decoupler, in particular, further comprises:
and the sampling unit is used for sampling the power supply signal acquired by the low-pass filtering unit and outputting a sampling signal to the gateway.
11. The system according to claim 9 or 10, wherein the sampling unit is embodied as an opto-coupler.
12. A gateway, comprising:
transceiving means for receiving first network data from a network; and sending second network data to the network;
the modulation and demodulation device is used for modulating the first network data to obtain a first high-frequency signal and outputting the first high-frequency signal to the coupling decoupler; demodulating a second high-frequency signal received from the coupling decoupler to obtain second network data;
the transceiver is further configured to receive a power supply signal from the coupling decoupler.
13. The gateway of claim 12, wherein the gateway and the coupling decoupler are connected by a hybrid cable, the hybrid cable comprising a high frequency signal transmission line and a gateway power supply signal transmission line.
14. The gateway according to claim 12, wherein the modem apparatus specifically comprises a signal processing unit and a line system conversion unit, wherein:
the signal processing unit is used for modulating the first network data to obtain a first high-frequency signal; the wire system conversion unit is used for providing an output channel for the signal processing unit and outputting the first high-frequency signal to the coupling decoupler;
the wire system conversion unit is further used for providing an input channel for the signal processing unit and inputting the second high-frequency signal to the signal processing unit; the signal processing unit is further configured to demodulate the second high-frequency signal to obtain second network data.
15. The gateway of claim 14, wherein the wire system conversion unit is specifically configured to provide multiple output channels for the signal processing unit and multiple input channels for the signal processing unit.
16. The gateway according to claim 14 or 15, wherein the line system conversion unit is in particular a cascaded transformer.
17. The gateway according to claim 14 or 15, wherein the modem apparatus further includes:
the detection unit is used for acquiring the frequency of the power supply signal;
the signal processing unit is further configured to determine a modulation parameter and a demodulation parameter according to the frequency of the power signal.
18. A coupling decoupler, comprising:
the coupling and decoupling device is used for coupling a first high-frequency signal received from the gateway to a power supply signal transmitted by a power line and transmitting the first high-frequency signal through the power line; and decoupling a second high frequency signal from a coupling signal of the power supply signal and the second high frequency signal received from the power line, and outputting the second high frequency signal to the gateway;
and the power supply device is used for converting the power supply signal into a power supply signal, outputting the power supply signal to the gateway and supplying power to the gateway.
19. The coupling decoupler as in claim 18 wherein the gateway and the coupling decoupler are connected by a hybrid cable comprising a high frequency signal transmission line and a gateway power supply signal transmission line.
20. The coupling decoupler as claimed in claim 18, wherein said coupling decoupling means is embodied as a high pass filtering unit for isolating injection of said first high frequency signal into said power line; filtering the power supply signal in the coupling signal to obtain the second high-frequency signal;
the power supply device specifically comprises a low-pass filtering unit and a rectifying unit, wherein:
the low-pass filtering unit is used for acquiring the power supply signal from the signal transmitted by the power line;
the rectifying unit is used for converting the power supply signal acquired by the low-pass filtering unit into the power supply signal.
21. The coupling decoupler as claimed in claim 20, wherein said high pass filter unit is in particular a transformer; the low-pass filtering unit is specifically an electromagnetic interference (EMI) filter.
22. The coupling decoupler as claimed in claim 20 or claim 21, wherein the power supply further comprises:
and the sampling unit is used for sampling the power supply signal acquired by the low-pass filtering unit and outputting a sampling signal to the gateway.
23. The coupling decoupler as claimed in claim 22, wherein said sampling unit is embodied as an opto-coupler.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2015/074178 WO2016145560A1 (en) | 2015-03-13 | 2015-03-13 | Gateway side power line communication subsystem, gateway and coupling and decoupling apparatus |
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| CN107005276A CN107005276A (en) | 2017-08-01 |
| CN107005276B true CN107005276B (en) | 2020-02-14 |
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| Country | Link |
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| WO (1) | WO2016145560A1 (en) |
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| CN110289889B (en) * | 2019-06-26 | 2021-08-27 | 国网江西省电力有限公司经济技术研究院 | Novel coupler for low-voltage power line carrier communication |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023534A (en) * | 2012-11-30 | 2013-04-03 | 南方电网科学研究院有限责任公司 | Electric power wireless communication system |
| CN103064349A (en) * | 2011-10-20 | 2013-04-24 | 株式会社晟佑Pnc | Power line communication switch board integrated control system |
| WO2013174307A1 (en) * | 2012-09-20 | 2013-11-28 | 中兴通讯股份有限公司 | Signal transmission method and apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| BRPI0917008A2 (en) * | 2008-08-08 | 2016-02-16 | Powermax Global Llc | secure long distance data communications over power lines for meter reading and other communications services |
| US9276638B2 (en) * | 2010-09-22 | 2016-03-01 | Texas Instruments Incorporated | Coupling circuits for power line communication devices |
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- 2015-03-13 CN CN201580064341.8A patent/CN107005276B/en active Active
- 2015-03-13 WO PCT/CN2015/074178 patent/WO2016145560A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064349A (en) * | 2011-10-20 | 2013-04-24 | 株式会社晟佑Pnc | Power line communication switch board integrated control system |
| WO2013174307A1 (en) * | 2012-09-20 | 2013-11-28 | 中兴通讯股份有限公司 | Signal transmission method and apparatus |
| CN103023534A (en) * | 2012-11-30 | 2013-04-03 | 南方电网科学研究院有限责任公司 | Electric power wireless communication system |
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| WO2016145560A1 (en) | 2016-09-22 |
| CN107005276A (en) | 2017-08-01 |
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