CN111224691A - Circuit, method and communication circuit for transmitting signals - Google Patents
Circuit, method and communication circuit for transmitting signals Download PDFInfo
- Publication number
- CN111224691A CN111224691A CN201911122536.XA CN201911122536A CN111224691A CN 111224691 A CN111224691 A CN 111224691A CN 201911122536 A CN201911122536 A CN 201911122536A CN 111224691 A CN111224691 A CN 111224691A
- Authority
- CN
- China
- Prior art keywords
- circuit
- power line
- filter circuit
- coupling
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/56—Circuits for coupling, blocking, or by-passing of signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5462—Systems for power line communications
- H04B2203/5483—Systems for power line communications using coupling circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5462—Systems for power line communications
- H04B2203/5491—Systems for power line communications using filtering and bypassing
Abstract
The invention discloses a circuit, a method and a communication circuit for transmitting signals. Wherein, this circuit includes: the coupling circuit is positioned between the first power line and the second power line and used for coupling the carrier signal transmitted by the first power line and transmitting the coupled carrier signal to the second power line; and the filter circuit is used for filtering interference signals in the first power line and the second power line. The invention solves the technical problem that the carrier signal can not be directly transmitted between different phase voltages or different voltage grades in the prior art.
Description
Technical Field
The present invention relates to the field of carrier communication technologies, and in particular, to a circuit, a method, and a communication circuit for transmitting a signal.
Background
At present, a power communication network covering the whole country with digital microwave communication and satellite communication as main lines is formed preliminarily, and a plurality of communication means are developed in a competitive manner, power line carrier communication is still one of main communication means of a regional network, a provincial network and a local network, and is still an important basic communication means of a communication mode and a power communication network which are the most extensive in an application area of a power system. The power carrier communication technology is applied to an alternating current system more frequently, but in the application, alternating current cannot directly realize cross-phase communication or cross-voltage communication.
In view of the above-mentioned problem that the carrier signal cannot be directly transmitted between different phase voltages or different voltage classes in the prior art, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the invention provides a circuit, a method and a communication circuit for transmitting signals, which at least solve the technical problem that carrier signals cannot be directly transmitted between different phase voltages or different voltage grades in the prior art.
According to an aspect of an embodiment of the present invention, there is provided a circuit for transmitting a signal, including: the coupling circuit is positioned between the first power line and the second power line and used for coupling the carrier signal transmitted by the first power line and transmitting the coupled carrier signal to the second power line; and the filter circuit is used for filtering interference signals in the first power line and the second power line.
According to another aspect of the embodiments of the present invention, there is also provided a method of transmitting a signal, including: receiving a carrier signal; the filter circuit filters interference signals in the first power line and the second power line; the coupling circuit is used for coupling the carrier signal passing through the first power line; and transmitting the coupled carrier signal to a second power line.
According to another aspect of the embodiments of the present invention, there is also provided a system for transmitting signals, including any one of the above-mentioned circuits for transmitting signals.
According to another aspect of the embodiments of the present invention, there is also provided a storage medium, where the storage medium includes a stored program, and when the program runs, the apparatus on which the storage medium is located is controlled to execute any one of the above methods for transmitting signals.
According to another aspect of the embodiments of the present invention, there is also provided a processor, configured to execute a program, where the program executes any one of the above methods for transmitting signals.
According to another aspect of the embodiments of the present invention, there is also provided a communication circuit, including: the coupling circuit is positioned between the first power line and the second power line and used for coupling the carrier signal; the filter circuit is used for filtering interference signals in the first power line and the second power line; a processor for executing a program, wherein the program is executed to perform any of the above methods for transmitting signals on data output from the at least one coupling circuit.
According to another aspect of the embodiments of the present invention, there is also provided a communication circuit, including: the coupling circuit is positioned between the first power line and the second power line and used for coupling the carrier signal; the filter circuit is used for filtering interference signals in the first power line and the second power line; a storage medium for storing a program, wherein the program performs any of the above-described methods of transmitting signals on data output from at least one coupling circuit when executed.
In the embodiment of the invention, a multi-stage isolation coupling mode is adopted, interference signals in the first power line and the second power line are filtered by receiving the carrier signals, and the carrier signals are coupled, so that the purpose of cross-voltage transmission of the carrier signals is achieved, the technical effect that the carrier signals are directly transmitted between different phase voltages or different voltage grades is realized, and the technical problem that the carrier signals cannot be directly transmitted between different phase voltages or different voltage grades in the prior art is solved.
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 application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic diagram of a circuit for transmitting signals according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an alternative multi-stage coupling circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an alternative coupling circuit according to an embodiment of the present invention;
FIG. 4 is a flow chart of a method of transmitting a signal according to an embodiment of the present invention; and
fig. 5 is a flow chart of an alternative method of transmitting a signal in accordance with an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
According to an embodiment of the present invention, a system embodiment of a circuit for transmitting a signal is provided.
Fig. 1 is a schematic structural diagram of a circuit for transmitting signals according to an embodiment of the present invention, as shown in fig. 1, the circuit includes: the at least one coupling circuit 101 is located between the first power line and the second power line, and is used for coupling the carrier signal transmitted by the first power line and transmitting the coupled carrier signal to the second power line; and the filter circuit 103 is used for filtering interference signals in the first power line and the second power line.
In an alternative embodiment, the circuit for transmitting signals comprises at least one coupling circuit and a filter circuit, wherein the at least one coupling circuit comprises a coupling circuit for coupling the carrier signal. The circuit for transmitting signals comprises at least one circuit formed by combining the coupling circuit and the filter circuit, and the circuit comprises the coupling circuit, so that a plurality of circuits for transmitting signals can form a multi-stage coupling circuit for transmitting carrier signals between power lines with different voltage levels or different phase voltages, wherein the voltage levels or the voltage phases of the voltage signals of the input end and the output end of the circuits for transmitting signals are different, namely the first power line and the second power line have different voltage levels and/or phase voltages.
Specifically, a power carrier signal generated by a power system enters a circuit for transmitting signals through a power line at one end of the circuit, an interference signal in the power line is filtered by a filter element (for example, an LC filter circuit composed of a capacitor and an inductor) in the filter circuit, the carrier signal is coupled to the power line at the other end through a coupling circuit (for example, a transformer or a capacitor), and finally the coupled carrier signal is output through the power line at the other end. In order to ensure that the carrier signal can be normally transmitted in the coupling circuit, the circuit for transmitting the signal further comprises a voltage stabilizing circuit, and the voltage stabilizing circuit can protect a filter element and the coupling circuit in the filter circuit.
It should be noted that a carrier chip (e.g., ST7580 chip of ST corporation) in the power supply system may generate the carrier signal. In the case that the carrier signal is an ac signal, the transformer can couple the carrier signal to the other end of the coupling circuit well, but in 220V commercial power, a 50Hz power line voltage signal in the commercial power needs to be filtered (the signal can be filtered by a filter circuit in the circuit for transmitting the signal). In addition, because the influence of the complicated electric load of the commercial power and the alternating voltage of the commercial power does not exist, the circuit for transmitting the carrier signal, which comprises the coupling circuit, has the characteristics of good transmission effect and high power conversion rate (in short-distance transmission, the power conversion rate can be close to 100%).
In addition, in another alternative embodiment, the circuit for transmitting signals can also be used in a direct current power supply system. Fig. 2 is a schematic structural diagram of an alternative signal transmission circuit, in fig. 2, 21 is a DC power supply system, 23a and 23b are DC-DC conversion modules, 25a and 25b are coupling circuits, 27a, 27b and 27c are loads, and 29a, 29b and 29c are carrier modules. In the microgrid direct-current system, when carrier signals with different voltage levels are transmitted, the common ground ends in the microgrid direct-current system are connected together, the other end receives the carrier signals and transmits the carrier signals, and the transformer in the embodiment is replaced by capacitance coupling in the middle. In fig. 2, the carrier signal transmitted on the high-voltage power line of the dc power supply system may be directly transmitted to the low-voltage power line through the coupling circuit, so that direct transmission of signals between different voltage levels or across multiple voltage levels may be realized, i.e., the load 27a may directly communicate with the load 27 c.
In addition, it should be noted that, in the ac system, the coupling circuit may be, but is not limited to, a transformer; in a dc system, the coupling circuit may be, but is not limited to, a capacitor.
As can be seen from the above, by receiving the carrier signal, filtering the interference signal in the first power line and the second power line by the filter circuit, and coupling the filtered carrier signal by the coupling circuit, it is easy to note that since the coupling circuit can couple the carrier signal, the carrier signal can be transmitted from a line of a certain voltage class or phase voltage to one end of another voltage class or phase voltage, so as to achieve the purpose of cross-voltage or cross-phase voltage transmission of the carrier signal, thereby achieving the technical effect of direct transmission of the carrier signal between different phase voltages or different voltage classes, and further solving the technical problem in the prior art that the carrier signal cannot be directly transmitted between different phase voltages or different voltage classes.
In an alternative embodiment, fig. 3 shows a schematic structural diagram of an alternative signal transmission circuit, and as shown in fig. 3, the signal transmission circuit further includes: an input port and an output port. One end of the input port is connected with the first voltage level power line, and the other end of the input port is connected to the first power line and used for receiving a carrier signal output by the first voltage level power line; and one end of the output port is connected with the second voltage class power line, and the other end of the output port is connected to the second power line and is used for outputting the carrier signal after the coupling processing through at least one coupling circuit.
The first voltage class power line and the second voltage class power line have different voltage classes or different phase voltage classes, and are used for connecting a plurality of circuits for transmitting signals.
Specifically, in fig. 3, J1 is a terminal of an input port, and includes two ports 1 and 2, for connecting to a power line of a first voltage class; j2 is a terminal for an output port, also containing two ports 1 and 2, for connection to a power line of a second voltage class. Wherein the first voltage level and the second voltage level are different voltage levels.
In addition, the filter circuit includes: a first filter circuit and a second filter circuit. The first filter circuit is connected with the input port and used for filtering a first interference signal in a first power line; and the second filter circuit is connected with the first filter circuit and is used for filtering a second interference signal in the second power line.
Specifically, the first filter circuit includes: the circuit comprises a first capacitor and a first inductor, wherein one end of the first capacitor is connected with an input port, the other end of the first capacitor is connected with one end of the first inductor, and the first capacitor is used for filtering a first interference signal in a first power line; one end of the coupling circuit is connected with the first inductor and the second filter circuit, and the other end of the coupling circuit is connected with the voltage stabilizing circuit.
The second filter circuit includes: the second capacitor is connected between the output port and the second inductor, and the second inductor is connected between the coupling circuit and the second capacitor.
In an alternative embodiment, in fig. 3, the capacitor C1, the inductor L1 and the transformer T1 form a first filter circuit, and the capacitor C2 and the inductor L2 form a second filter circuit. The capacitors C1 and C2 are X2 capacitors and are used for filtering and absorbing circuit interference, and the capacitance is calculated according to the design requirement of actual carrier frequency; the transformer T1 is used for realizing magnetic coupling transmission of signals and isolating electric power with different voltage grades; the inductors L1 and L2 are power inductors, and are used for forming an LC filter together with a leakage inductor and a capacitor of the transformer, wherein the inductance of the power inductors and the center frequency of the filter are designed according to the carrier frequency requirement. Because the capacitor is charged at the moment of electrification to generate instantaneous large current, elements in the filter circuit have the characteristic of instantaneous large current resistance.
It should be noted that the X2 capacitor has good performance because the X2 capacitor has a relatively large withstand voltage value, a large peak current, and a relatively small equivalent Series resistance esr (equivalent Series resistance), but the capacitors C1 and C2 are not limited to the X2 capacitor, and may be replaced by other types of capacitors.
Optionally, the voltage stabilizing circuit in the circuit for transmitting signals includes: the first voltage stabilizing circuit and the second voltage stabilizing circuit. The first voltage stabilizing circuit is connected between the input port and the first filter circuit and is used for performing voltage stabilizing treatment on the first inductor and the coupling circuit; and the second voltage stabilizing circuit is connected between the output port and the second filter circuit and is used for stabilizing the voltage of the second inductor so as to prevent the filter circuit and elements in the coupling circuit from being burnt due to overhigh voltage in the circuit.
Specifically, in fig. 3, a voltage regulator D1 constitutes a first voltage regulator circuit, and a voltage regulator D2 constitutes a second voltage regulator circuit, where the voltage regulator D1 and the voltage regulator D2 are used to protect a transformer T1, a power inductor L1, and a power inductor L2.
It should be noted that the breakdown voltages of the stabilivolt D1 and D2 can be designed according to the actual carrier chip or carrier transmitting power and the amplitude of the carrier signal.
In addition, the above-mentioned voltage regulator tube may be, but is not limited to, a voltage regulator diode, such as a TVS tube.
In another alternative embodiment, the transmission direction of the carrier signal in the at least one coupling circuit is bidirectional, that is, in the circuit schematic shown in fig. 3, the terminal J1 may serve as an input terminal or an output terminal, and correspondingly, the terminal J2 may serve as an output terminal or an input terminal.
Example 2
According to an embodiment of the present invention, an embodiment of a method of transmitting a signal is provided.
Fig. 4 is a flowchart of a method for transmitting a signal according to an embodiment of the present invention, in fig. 4, a circuit for transmitting a signal transmits a carrier signal, wherein the circuit for transmitting a signal includes at least one coupling circuit and a filtering circuit between a first power line and a second power line, and as shown in fig. 4, the method for transmitting a signal in the circuit for transmitting a signal includes the following steps:
step S402, receiving a carrier signal;
step S404, filtering interference signals in the first power line and the second power line by a filter circuit;
step S406, the coupling circuit couples the carrier signal passing through the first power line;
step S408, transmitting the coupled carrier signal to a second power line.
It should be noted that the first power line and the second power line have different voltage levels and/or different phase voltages, wherein the first power line and the second power line are used for connecting elements in a circuit for transmitting signals. In addition, the circuit for transmitting signals further comprises a voltage stabilizing circuit, wherein the voltage stabilizing circuit connected with the filter circuit is used for stabilizing the carrier signals and protecting elements in the filter circuit.
In an alternative embodiment, the circuit for transmitting signals comprises at least one coupling circuit and a filter circuit, wherein the at least one coupling circuit comprises a coupling circuit for coupling the carrier signal. The circuit for transmitting signals comprises at least one circuit formed by combining the coupling circuit and the filter circuit, and the filter comprises the coupling circuit, so that a plurality of filters comprising the coupling circuit can form a multi-stage coupling for transmitting carrier signals between power lines of different voltage levels or different phase voltages, wherein the voltage levels or the voltage phases of the voltage signals at the input end and the output end of the circuit for transmitting signals are different.
Specifically, a power carrier signal generated by a power system enters a circuit for transmitting signals through a power line at one end of the circuit, an interference signal in the power line is filtered by a filter element (for example, an LC filter circuit composed of a capacitor and an inductor) in the filter circuit, the carrier signal is coupled to a power line end at the other end through a coupling circuit (for example, a transformer or a capacitor), and finally the coupled carrier signal is output through the power line at the other end. In order to ensure that the carrier signal can be transmitted in the coupling circuit normally, the circuit for transmitting the signal further comprises a voltage stabilizing circuit, and the voltage stabilizing circuit can protect a filter element and the coupling circuit in the filter circuit.
It should be noted that a carrier chip (e.g., ST7580 chip of ST corporation) in the power supply system may generate the carrier signal. In the case that the carrier signal is an ac signal, the transformer can couple the carrier signal to the other end of the coupling circuit well, but in 220V commercial power, a 50Hz power line voltage signal in the commercial power needs to be filtered (the signal can be filtered by a filter circuit in the circuit for transmitting the signal). In addition, because the influence of the complicated electric load of the commercial power and the alternating voltage of the commercial power does not exist, the circuit for transmitting the carrier signal, which comprises the coupling circuit, has the characteristics of good transmission effect and high power conversion rate (in short-distance transmission, the power conversion rate can be close to 100%).
In addition, in another alternative embodiment, the circuit for transmitting signals can also be used in a direct current power supply system. Fig. 2 is a schematic structural diagram of an alternative signal transmission circuit, in fig. 2, 21 is a DC power supply system, 23a and 23b are DC-DC conversion modules, 25a and 25b are coupling circuits, 27a, 27b and 27c are loads, and 29a, 29b and 29c are carrier modules. In the microgrid direct-current system, when carrier signals with different voltage levels are transmitted, the common ground ends in the microgrid direct-current system are connected together, the other end receives the carrier signals and transmits the carrier signals, and the transformer in the embodiment is replaced by capacitance coupling in the middle. In fig. 2, the carrier signal transmitted on the high-voltage power line of the dc power supply system may be directly transmitted to the low-voltage power line through the coupling circuit, so that direct transmission of signals between different voltage levels or across multiple voltage levels may be realized, i.e., the load 27a may directly communicate with the load 27 c.
Based on the solutions defined in steps S402 to S408 in the above embodiments, it can be known that at least one coupling circuit receives a carrier signal in a first power line, a filter circuit filters interference signals in the first power line and a second power line, and then the coupling circuit performs coupling processing on the carrier signal and outputs the carrier signal to the second power line, where the first power line and the second power line have different voltage levels and/or phase voltages, and a voltage regulator circuit connected to the filter circuit performs voltage regulation processing on the carrier signal and protects elements in the filter circuit, and it is easy to note that, since the filter circuit can perform coupling processing on the carrier signal, it is possible to transmit the carrier signal from a line with a certain voltage level or phase voltage to one end of another voltage level or phase voltage, so as to achieve the purpose of cross-voltage transmission of the carrier signal, therefore, the technical effect that the carrier signal is directly transmitted between different phase voltages or different voltage grades is achieved, and the technical problem that the carrier signal cannot be directly transmitted between different phase voltages or different voltage grades in the prior art is solved.
In an alternative embodiment, fig. 5 shows a flow chart of an alternative method for transmitting a signal, and as shown in fig. 5, the filter circuit includes a first filter circuit and a second filter circuit, and the filter circuit filters interference signals in the first power line and the second power line, and includes:
step S502, a first filter circuit filters a first interference signal in a first power line;
step S504, the coupling circuit couples the carrier signal after the filtering processing and transmits the coupled carrier signal to a second power line;
in step S506, the second filter circuit filters the second interference signal in the second power line.
In an alternative embodiment, in fig. 3, the capacitor C1, the inductor L1 and the transformer T1 form a first filter circuit, and the capacitor C2 and the inductor L2 form a second filter circuit. The capacitors C1 and C2 are X2 capacitors and are used for filtering and absorbing circuit interference, and the capacitance is calculated according to the design requirement of an actual carrier frequency; the transformer T1 is used for realizing magnetic coupling transmission of signals and isolating electric power with different voltage grades; the inductors L1 and L2 are power inductors, and are used for forming an LC filter together with a leakage inductor and a capacitor of the transformer, wherein the inductance of the power inductors and the center frequency of the filter are designed according to the carrier frequency requirement. Because the capacitor is charged at the moment of electrification to generate instantaneous large current, elements in the filter circuit have the characteristic of instantaneous large current resistance.
The X2 capacitor has a good performance because the X2 capacitor has a relatively large withstand voltage, a large peak current, and a small equivalent series resistance ESR, but the capacitors C1 and C2 are not limited to the X2 capacitor, and may be replaced by other types of capacitors.
In another alternative embodiment, a voltage regulator circuit in a circuit for transmitting signals includes: the first voltage stabilizing circuit and the second voltage stabilizing circuit. The first voltage stabilizing circuit is used for performing voltage stabilizing treatment on the first inductor and the coupling circuit; the second voltage stabilizing circuit is used for stabilizing the voltage of the second inductor so as to prevent the voltage in the circuit from being too high and further prevent elements in the filter circuit and the coupling circuit from being burnt out. Specifically, in fig. 3, a voltage regulator D1 constitutes a first voltage regulator circuit, and a voltage regulator D2 constitutes a second voltage regulator circuit, where the voltage regulator D1 and the voltage regulator D2 are used to protect a transformer T1, a power inductor L1, and a power inductor L2.
It should be noted that the breakdown voltages of the stabilivolt D1 and D2 can be designed according to the actual carrier chip or carrier transmitting power and the amplitude of the carrier signal.
In addition, the above-mentioned voltage regulator tube may be, but is not limited to, a voltage regulator diode, such as a TVS tube.
In addition, according to the embodiment of the invention, the embodiment of the storage medium is also provided.
In the present embodiment, the storage medium described above may be used to store program codes executed by the method of transmitting signals provided in embodiment 2.
Optionally, in this embodiment, the storage medium may be located in any one computer terminal in a computer terminal group in a computer network, or in any one mobile terminal in a mobile terminal group.
Optionally, in this embodiment, the storage medium is configured to store program codes for performing the following steps: at least one coupling circuit receives a carrier signal; the filter circuit filters interference signals in the first power line and the second power line, the coupling circuit performs coupling processing on the carrier signal, the first power line and the second power line have different voltage levels and/or phase voltages, and the voltage stabilizing circuit connected with the filter circuit performs voltage stabilizing processing on the carrier signal and protects elements in the filter circuit.
Optionally, in this embodiment, the storage medium is further configured to store program code for performing the following steps: the first filter circuit filters a first interference signal in the first power line, the coupling circuit couples the carrier signal after filtering processing to the second power line, and the second filter circuit filters a second interference signal in the second power line.
Furthermore, an embodiment of a processor is provided according to the embodiment of the invention.
Optionally, in this embodiment, the processor may be configured to execute the program code of the method for transmitting a signal provided in embodiment 2.
The processor can call the information and application program stored in the memory through the transmission device to execute the following steps: at least one coupling circuit receives a carrier signal; the filter circuit filters interference signals in the first power line and the second power line, the coupling circuit performs coupling processing on the carrier signal, the first power line and the second power line have different voltage levels and/or phase voltages, and the voltage stabilizing circuit connected with the filter circuit performs voltage stabilizing processing on the carrier signal and protects elements in the filter circuit.
Optionally, the processor may further execute the program code of the following steps: the first filter circuit filters a first interference signal in the first power line, the coupling circuit couples the carrier signal after filtering processing to the second power line, and the second filter circuit filters a second interference signal in the second power line.
Optionally, in this embodiment, an embodiment of a communication circuit is further provided.
The communication circuit includes: at least one coupling circuit, a filtering circuit, and a processor.
The at least one coupling circuit is positioned between the first power line and the second power line and used for coupling the carrier signal transmitted by the first power line and transmitting the coupled carrier signal to the second power line; the filter circuit is used for filtering interference signals in the first power line and the second power line; a processor, the processor running a program, wherein the program is run to perform the following processing steps on the data output from the at least one coupling circuit:
step one, receiving a carrier signal;
step two, filtering interference signals in the first power line and the second power line by a filter circuit;
step three, the coupling circuit carries out coupling processing on the carrier signal passing through the first power line;
and step four, transmitting the coupled carrier signal to a second power line.
The voltage stabilizing circuit connected with the filter circuit is used for stabilizing the carrier signal and protecting elements in the filter circuit.
Optionally, in this embodiment, an embodiment of a communication circuit is further provided.
The communication circuit includes: at least one coupling circuit, filter circuit and storage medium
The at least one coupling circuit is positioned between the first power line and the second power line and used for coupling the carrier signal transmitted by the first power line and transmitting the coupled carrier signal to the second power line; the filter circuit is used for filtering interference signals in the first power line and the second power line; a storage medium for storing a program, wherein the program performs the following processing steps on data output from the at least one coupling circuit and the filter circuit when running:
step one, receiving a carrier signal;
step two, filtering interference signals in the first power line and the second power line by a filter circuit;
step three, the coupling circuit carries out coupling processing on the carrier signal passing through the first power line;
and step four, transmitting the coupled carrier signal to a second power line.
The voltage stabilizing circuit connected with the filter circuit is used for stabilizing the carrier signal and protecting elements in the filter circuit.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit may be a division of a logic function, and an actual implementation may have another division, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or may not be executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (16)
1. A circuit for transmitting a signal, comprising:
the coupling circuit is positioned between a first power line and a second power line and used for coupling a carrier signal transmitted by the first power line and transmitting the coupled carrier signal to the second power line, and the first power line and the second power line have different voltage levels and/or phase voltages;
the filter circuit is used for filtering interference signals in the first power line and the second power line;
in a direct current system, the at least one coupling circuit is a capacitor;
the filter circuit comprises a first filter circuit and a second filter circuit, the first filter circuit comprises a first capacitor and a first inductor, the second filter circuit comprises a second capacitor and a second inductor, and the first capacitor and the second capacitor are X2 capacitors.
2. The circuit of claim 1, further comprising:
and the voltage stabilizing circuit is connected with the coupling circuit and is used for performing voltage stabilizing processing on the carrier signal and performing voltage stabilizing processing on elements in the filter circuit.
3. The circuit of claim 2, further comprising:
one end of the input port is connected with a first voltage level power line, and the other end of the input port is connected to the first power line and used for receiving a carrier signal output by the first voltage level power line;
and one end of the output port is connected with the second voltage class power line, and the other end of the output port is connected to the second power line and is used for outputting the carrier signal after the coupling processing through the at least one coupling circuit.
4. The circuit of claim 3, wherein the filtering circuit comprises:
the first filter circuit is connected with the input port and is used for filtering a first interference signal in the first power line;
the second filter circuit is connected with the first filter circuit and used for filtering a second interference signal in the second power line.
5. The circuit of claim 4, wherein the first filtering circuit comprises: a first capacitor, the first inductor, wherein,
one end of the first capacitor is connected with the input port, the other end of the first capacitor is connected with one end of the first inductor, and the first capacitor is used for filtering out a first interference signal in the first power line, wherein the other end of the first inductor is connected with the coupling circuit.
6. The circuit of claim 5, wherein one end of the coupling circuit is connected to the first inductor and the second filter circuit, and the other end of the coupling circuit is connected to the voltage regulator circuit.
7. The circuit of claim 6, wherein the second filtering circuit comprises: the second capacitor is connected between the output port and the second inductor, and the second inductor is connected between the coupling circuit and the second capacitor.
8. The circuit of claim 7, wherein the voltage regulator circuit comprises:
the first voltage stabilizing circuit is connected between the input port and the first filter circuit and is used for performing voltage stabilizing treatment on the first inductor and the coupling circuit;
and the second voltage stabilizing circuit is connected between the output port and the second filter circuit and is used for performing voltage stabilizing treatment on the second inductor.
9. The circuit of claim 8, wherein the first voltage regulation circuit, and/or the second voltage regulation circuit comprises at least a zener diode, wherein the zener diode is a TVS transistor.
10. The circuit of claim 1, wherein the direction of transmission of the carrier signal in the at least one coupling circuit is bi-directional.
11. A method of transmitting a signal, wherein a circuit of the transmission signal transmits a carrier signal, wherein the circuit of the transmission signal comprises at least one coupling circuit and a filter circuit between a first power line and a second power line, wherein the first power line and the second power line have different voltage levels and/or phase voltages, and wherein the method of transmitting a signal in the circuit of the transmission signal comprises:
receiving the carrier signal;
the filter circuit filters interference signals in the first power line and the second power line;
the coupling circuit is used for coupling the carrier signal passing through the first power line;
transmitting the coupled carrier signal to the second power line;
in a direct current system, the at least one coupling circuit is a capacitor;
the filter circuit comprises a first filter circuit and a second filter circuit, the first filter circuit comprises a first capacitor and a first inductor, the second filter circuit comprises a second capacitor and a second inductor, and the first capacitor and the second capacitor are X2 capacitors.
12. The method of claim 11, the filter circuit comprising a first filter circuit and a second filter circuit, wherein the filter circuit filters out interference signals in the first power line and the second power line, comprising:
the first filter circuit filters a first interference signal in the first power line;
the coupling circuit couples the filtered carrier signal and transmits the coupled carrier signal to the second power line;
the second filter circuit filters a second interference signal in the second power line.
13. A storage medium, characterized in that the storage medium comprises a stored program, wherein when the program runs, a device in which the storage medium is located is controlled to execute the method for transmitting signals according to any one of claims 11 to 12.
14. A processor, characterized in that the processor is configured to run a program, wherein the program is configured to execute the method for transmitting signals according to any one of claims 11 to 12 when the program is run.
15. A communication circuit, comprising:
the coupling circuit is positioned between a first power line and a second power line and used for coupling a carrier signal transmitted by the first power line and transmitting the coupled carrier signal to the second power line, and the first power line and the second power line have different voltage levels and/or phase voltages;
the filter circuit is used for filtering interference signals in the first power line and the second power line;
a processor running a program, wherein the program is running to perform the following processing steps on data output from the at least one coupling circuit and the filtering circuit:
step one, receiving the carrier signal;
step two, the filter circuit filters interference signals in the first power line and the second power line;
step three, the coupling circuit couples the carrier signal passing through the first power line;
step four, transmitting the coupled carrier signal to the second power line;
in a direct current system, the at least one coupling circuit is a capacitor;
the filter circuit comprises a first filter circuit and a second filter circuit, the first filter circuit comprises a first capacitor and a first inductor, the second filter circuit comprises a second capacitor and a second inductor, and the first capacitor and the second capacitor are X2 capacitors.
16. A communication circuit, comprising:
the coupling circuit is positioned between a first power line and a second power line and used for coupling a carrier signal transmitted by the first power line and transmitting the coupled carrier signal to the second power line, and the first power line and the second power line have different voltage levels and/or phase voltages;
the filter circuit is used for filtering interference signals in the first power line and the second power line;
a storage medium for storing a program, wherein the program performs the following processing steps on data output from the at least one coupling circuit and the filter circuit when running:
step one, receiving the carrier signal;
step two, the filter circuit filters interference signals in the first power line and the second power line;
step three, the coupling circuit couples the carrier signal passing through the first power line;
step four, transmitting the coupled carrier signal to the second power line;
in a direct current system, the at least one coupling circuit is a capacitor;
the filter circuit comprises a first filter circuit and a second filter circuit, the first filter circuit comprises a first capacitor and a first inductor, the second filter circuit comprises a second capacitor and a second inductor, and the first capacitor and the second capacitor are X2 capacitors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911122536.XA CN111224691A (en) | 2017-03-17 | 2017-03-17 | Circuit, method and communication circuit for transmitting signals |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911122536.XA CN111224691A (en) | 2017-03-17 | 2017-03-17 | Circuit, method and communication circuit for transmitting signals |
| CN201710164828.4A CN106953666A (en) | 2017-03-17 | 2017-03-17 | Transmit circuit, method and the telecommunication circuit of signal |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710164828.4A Division CN106953666A (en) | 2017-03-17 | 2017-03-17 | Transmit circuit, method and the telecommunication circuit of signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111224691A true CN111224691A (en) | 2020-06-02 |
Family
ID=59471905
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710164828.4A Pending CN106953666A (en) | 2017-03-17 | 2017-03-17 | Transmit circuit, method and the telecommunication circuit of signal |
| CN201911122536.XA Pending CN111224691A (en) | 2017-03-17 | 2017-03-17 | Circuit, method and communication circuit for transmitting signals |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710164828.4A Pending CN106953666A (en) | 2017-03-17 | 2017-03-17 | Transmit circuit, method and the telecommunication circuit of signal |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN106953666A (en) |
| WO (1) | WO2018166040A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112769136B (en) * | 2020-12-31 | 2023-05-12 | 深圳市九洲电器有限公司 | Filter circuit, power supply equipment and power supply system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996017444A1 (en) * | 1994-12-01 | 1996-06-06 | Remote Metering Systems Ltd. | Power line signalling system |
| US6023106A (en) * | 1994-12-02 | 2000-02-08 | Abraham; Charles | Power line circuits and adaptors for coupling carrier frequency current signals between power lines |
| CN201113557Y (en) * | 2007-09-21 | 2008-09-10 | 上海思南电力通信有限公司 | Coupling bridging device for mixing line carrier signal spanning 'line switch ' |
| CN202617114U (en) * | 2012-05-18 | 2012-12-19 | 福建省电力有限公司 | Low-voltage power line carrier signal coupling device |
| CN103595596A (en) * | 2012-08-14 | 2014-02-19 | 海尔集团公司 | An Internet of Things household electrical appliance interconnection system based on PLC |
-
2017
- 2017-03-17 CN CN201710164828.4A patent/CN106953666A/en active Pending
- 2017-03-17 CN CN201911122536.XA patent/CN111224691A/en active Pending
- 2017-04-21 WO PCT/CN2017/081512 patent/WO2018166040A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996017444A1 (en) * | 1994-12-01 | 1996-06-06 | Remote Metering Systems Ltd. | Power line signalling system |
| US6023106A (en) * | 1994-12-02 | 2000-02-08 | Abraham; Charles | Power line circuits and adaptors for coupling carrier frequency current signals between power lines |
| CN201113557Y (en) * | 2007-09-21 | 2008-09-10 | 上海思南电力通信有限公司 | Coupling bridging device for mixing line carrier signal spanning 'line switch ' |
| CN202617114U (en) * | 2012-05-18 | 2012-12-19 | 福建省电力有限公司 | Low-voltage power line carrier signal coupling device |
| CN103595596A (en) * | 2012-08-14 | 2014-02-19 | 海尔集团公司 | An Internet of Things household electrical appliance interconnection system based on PLC |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018166040A1 (en) | 2018-09-20 |
| CN106953666A (en) | 2017-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102332808B (en) | Comprise the inverter filtering device of differential mode and common mode and comprise the system of this inverter filtering device | |
| US9479105B2 (en) | Input EMI filter for motor drive including an active rectifier | |
| JPS61169012A (en) | Apparatus for zno overvoltage induction body | |
| CN102934311A (en) | Interface arrangement between AC and DC systems including filter at transformer neutral point | |
| EP3090480B1 (en) | Methods, circuits and articles of manufacture for configuring dc output filter circuits | |
| CN111902895A (en) | Shielded power transformer | |
| US9835666B2 (en) | Noise detection circuit | |
| CN105577391B (en) | A kind of power supply unit based on difference type communication interface, method and system | |
| JP2008245037A (en) | Noise filter | |
| CN213125842U (en) | EMI filter circuit based on switching power supply | |
| CN107134916B (en) | Device and method for preventing electromagnetic information leakage in alternating-current power supply transmission | |
| CN111224691A (en) | Circuit, method and communication circuit for transmitting signals | |
| CN108347160A (en) | A kind of filtering method of DC-DC converter, device and terminal | |
| US10090753B1 (en) | Power conversion device and power conversion system | |
| CN205385404U (en) | Three -phase common mode filter circuit and wave filter | |
| EP3394971A1 (en) | Grounding scheme for power conversion system | |
| CN103650600A (en) | Remote radio unit and related equipment | |
| CN210490474U (en) | Design circuit of three-phase four-wire general filter | |
| CN104521129A (en) | Parallel inverter on a choke | |
| US10298113B2 (en) | Filter for a power network | |
| US9735572B2 (en) | Low-voltage DC power supply for electronic communication devices | |
| RU2558690C2 (en) | Device intended for power takeoff from power transmission line | |
| CN102170540A (en) | Input power supply voltage sampling and shutdown capacitance discharging circuit | |
| CN216721180U (en) | 86 box control circuit and 86 box based on power line carrier | |
| Vinayaka et al. | Performance Analysis of Harmonic Suppression Techniques |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200602 |