CN111404583A - Carrier wave repeater - Google Patents
Carrier wave repeater Download PDFInfo
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- CN111404583A CN111404583A CN202010503187.2A CN202010503187A CN111404583A CN 111404583 A CN111404583 A CN 111404583A CN 202010503187 A CN202010503187 A CN 202010503187A CN 111404583 A CN111404583 A CN 111404583A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/58—Repeater circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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Abstract
The invention relates to the field of communication and discloses a carrier repeater. The carrier relay includes: the three groups of signal coupling circuits are connected with the three-phase power lines in a one-to-one corresponding mode and are used for coupling carrier signals from the three-phase power lines respectively; three switch pairs, each switch pair comprises a transmitting switch and a receiving switch, and the three switch pairs are connected with the three groups of signal coupling circuits in a one-to-one corresponding mode; and a processor, comprising: the control module is used for controlling the receiving switches in the three switch pairs to be closed so as to receive the carrier signals; and the control module is also used for controlling the action of the switch pair corresponding to the specific phase power line so as to forward the carrier signal through the specific phase power line under the condition that the carrier signal comes from the specific phase power line in the three-phase power line. The invention can realize the accurate forwarding of the high-speed power line carrier signal in the three-phase four-wire system power supply network through one carrier repeater.
Description
Technical Field
The invention relates to the field of communication, in particular to a carrier repeater.
Background
High-speed Power L (High speed Power Communication, abbreviated as HP L C) refers to Communication in a manner that a Power transmission line is used as a Carrier transmission medium.
In a network using a high-speed power line carrier communication system, the communication effect is greatly affected by the installation environment of the power line. For example, when the power line between the concentrator and the electric meter of the three-phase power line is long, the middle of the power supply line passes through the multi-stage circuit breaker and the branch switch, or because of the load of the power supply line, the power consumption condition, the interference of the power grid, or the change of the environmental temperature and humidity, the high-speed power line carrier communication network may not be able to be networked or the networking is unstable, thereby resulting in low reliability of the service function.
At present, in order to solve the problem of unstable high-speed power line carrier communication, a method mainly adopted is to directly increase the power line carrier transmission power or add a carrier repeater at a proper node. The two methods mainly have the following defects: on one hand, according to the technical specification of a communication unit of the technical specification of the power consumer electricity utilization information acquisition system of the enterprise standard Q/GDW 1374.3 of the national grid company, the in-band emission power of the power line carrier communication module cannot exceed-45 dBm/Hz, so that the problem of unstable high-speed power line carrier communication cannot be completely solved by increasing the emission power of the carrier; on the other hand, the existing carrier repeater is designed for a single-phase power line, and specifically, one carrier repeater is added to each phase line with poor communication effect. In a common three-phase four-wire power supply network, if the power line carrier communication effect on each phase line is not good, one single-phase carrier repeater needs to be added on each phase line, and the total number of the single-phase carrier repeaters is three, so that the basic cost is greatly increased.
Disclosure of Invention
The invention aims to provide a carrier repeater which can accurately forward a high-speed power line carrier signal in a three-phase four-wire system power supply network through one carrier repeater, so that stable networking of a high-speed power line carrier communication network can be realized, and higher reliability of a service function is realized.
In order to achieve the above object, the present invention provides a carrier relay comprising: the three groups of signal coupling circuits are connected with the three-phase power line in a one-to-one corresponding mode and are used for respectively coupling carrier signals from the three-phase power line; three switch pairs, each of the three switch pairs comprising a transmitting switch and a receiving switch, the three switch pairs being connected with the three sets of signal coupling circuits in a one-to-one correspondence; and a processor, the processor comprising: the control module is used for controlling the receiving switches in the three switch pairs to be closed so as to receive the carrier signal; and the judging module is used for analyzing the source of the carrier signal, and correspondingly, the control module is also used for controlling the action of the switch pair corresponding to the specific phase power line according to the time slot allocated by the carrier signal so as to forward the carrier signal through the specific phase power line under the condition that the carrier signal comes from the specific phase power line in the three-phase power line.
Preferably, the determining module is further configured to analyze an association relationship between a destination terminal device identifier and a destination MAC address in the carrier signal and the carrier relay, and correspondingly, the control module is further configured to communicate with the electrical device according to the carrier signal when the destination terminal device identifier in the carrier signal is the terminal device identifier of the carrier relay and the destination MAC address in the carrier signal is the MAC address of the electrical device connected to the carrier relay.
Preferably, the processor further comprises: the RS485 interface is connected with the electric equipment, and correspondingly, the control module is used for communicating with the electric equipment according to the carrier signal and comprises: and under the condition that the carrier signal is used for inquiring or acquiring the related data of the electric equipment, inquiring or acquiring the related data of the electric equipment through the RS485 interface.
Preferably, the control module is further configured to feed back a result corresponding to the carrier signal obtained from the electrical device after the communication with the electrical device is completed.
Preferably, the determining module is further configured to determine whether the carrier signal is a broadcast signal when a destination terminal device identifier in the carrier signal is not a terminal device identifier of the carrier repeater, and correspondingly, the control module is further configured to control the three switch pairs to act according to a time slot allocated by the carrier signal when the carrier signal is a broadcast signal, so as to forward the carrier signal through the three-phase power line.
Preferably, the control module is further configured to control the receiving switches in the three switch pairs to close after the carrier signal is forwarded, so as to continue receiving the carrier signal.
Preferably, the processor further comprises: the wireless transmission interface is used for being connected with external equipment so as to configure parameters of the carrier repeater and/or monitor the network state of carrier communication through the external equipment; and/or an indicator light interface, which is used for connecting with an indicator light so as to display the current state of the carrier repeater through the indicator light.
Preferably, the zero-crossing detection module further comprises: and the zero-crossing detection module is used for identifying the phases to which the three-phase power lines belong respectively.
Preferably, the carrier relay further includes: the power supply module is connected with any one of the three-phase power lines and a zero line and used for acquiring power to supply power to the carrier repeater; and/or a memory for storing the relevant programs and relevant parameters in the carrier repeater.
Preferably, the processor further comprises: and the other at least one switch of the at least four control I/O interfaces is connected with the receiving switch of the three switch pairs and is used for realizing the receiving and the transmitting of the carrier signal.
Through the technical scheme, the three switch pairs are controlled to be closed to couple the carrier signals from the three-phase power line creatively, and the information of the carrier signals is analyzed through the judgment module; then, in the case that the information of the carrier signal indicates that the carrier signal is from a specific phase (for example, phase A) power line, the control module controls the action of the switch pair of the specific phase power line (for example, phase A) according to the time slot allocated by the carrier signal so as to forward the carrier signal through the specific phase power line (for example, phase A), thereby realizing the accurate forwarding of the high-speed power line carrier signal in the three-phase four-wire system power supply network through one carrier repeater.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
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 a structural diagram of a carrier repeater according to an embodiment of the present invention;
FIG. 2 is a block diagram of a processor provided by an embodiment of the invention;
fig. 3 is a structural diagram of a high-speed power line carrier application network according to an embodiment of the present invention; and
fig. 4 is a schematic flowchart of a carrier relay according to an embodiment of the present invention.
Description of the reference numerals
1. 2, 3A, B, C phase single-phase electric meter 4 three-phase electric meter
5 concentrator 6 Central coordinator
7 transformer 8 carrier repeater
9 ammeter 10, 20, 30 signal coupling circuit
11. 21, 31, 41 STA 40 processor
50 control module 60 judging module
70 RS485 interface 80 zero-crossing detection module
90 power supply module 100, 200, 300 switch pair
101. 201, 301 transmit switch 102, 202, 302 receive switch
110 memory 120 wireless transmission interface
130 indicating a light interface.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Before specifically describing the embodiments of the present invention, a brief description will be given of a power consumption information collecting communication network.
In actual application, the transformer 7 converts the high-voltage power into voltage for users to use, and then the voltage is transmitted to each user through the A/B/C three-phase and zero line. The power consumption information collection communication network of the power consumer is composed of a CCO (Central Coordinator) 6 installed in a three-phase four-wire concentrator 5 as a master control end, STAs (stations) in single-phase meters (e.g., STA 11 in the a-phase single-phase meter 1, STA 21 in the B-phase single-phase meter 2, and STA31 in the C-phase single-phase meter 3) arranged on different phases, and STA41 in the three-phase meter 4 as clients. The CCO in the concentrator may transmit broadcast signals on the a/B/C three phases simultaneously or transmit signals on a certain phase separately during actual operation, as shown in fig. 3.
In addition, the format of the carrier communication packet (or carrier signal) includes: the source Terminal Equipment Identity (TEI), i.e. the TEI of the device sending out the carrier signal, the destination TEI (the TEI of the device to be accessed), the source MAC address (the MAC address of the device sending out the carrier signal) and the destination MAC address (the MAC address of the device to be accessed). And in the networking process, the CCO allocates and stores a mapping relation table of the TEI and the MAC address. If the CCO needs to access the repeater itself, the source TEI is the CCO's TEI and the destination TEI is the repeater TEI; the source MAC address is the MAC address of the CCO and the destination MAC address is the MAC address of the repeater. If the electric equipment connected with the repeater needs to be accessed, the source TEI is the TEI of the CCO, and the destination TEI is the repeater TEI; the source MAC address is the MAC address of the CCO, and the destination MAC address is the MAC address of the electric equipment.
Fig. 1 is a structural diagram of a carrier relay according to an embodiment of the present invention. As shown in fig. 1, the carrier relay 8 may include: the three sets of signal coupling circuits 10, 20 and 30 are connected with the three-phase power line in a one-to-one correspondence manner and are used for coupling carrier signals from the three-phase power line respectively; three switch pairs 100, 200, 300, each of the three switch pairs 100, 200, 300 comprising a transmit switch (e.g., 101, 201, 301) and a receive switch (e.g., 102, 202, 302), the three switch pairs 100, 200, 300 being connected with the three sets of signal coupling circuits 10, 20, 30 in a one-to-one correspondence; and a processor 40, the processor 40 comprising: a control module 50, configured to control the receiving switches in the three switch pairs to be closed to receive the carrier signal; and a determining module 60, configured to analyze a source of the carrier signal, as shown in fig. 2. Correspondingly, the control module 50 is further configured to, in a case where the carrier signal is from a specific phase power line of the three-phase power lines, control the switch pair corresponding to the specific phase power line to operate according to the time slot allocated by the carrier signal, so as to forward the carrier signal through the specific phase power line. Therefore, the carrier signal to be forwarded to the single-phase power line is transmitted on the corresponding single-phase power line, and compared with the existing forwarding strategy (the same carrier signal is transmitted on the 3-phase power line at the same time, and the energy on each phase power line is only 1/3), the energy on the corresponding single-phase power line is 3 times larger, so that the transmission power of the signal can be greatly improved, and the transmission distance of the signal is greatly increased. The embodiment of the invention can meet the relay forwarding function of the three-phase power line carrier signal through one carrier repeater, thereby reducing the overall cost of product maintenance, installation and hardware.
The signal coupling circuit 10 is connected with an A phase and a zero line of a power supply network, and is used for coupling a carrier signal from the phase of an A phase power line; the signal coupling circuit 20 is connected with a phase B and a zero line of a power supply network and is used for coupling a carrier signal from a phase B power line phase; similarly, the signal coupling circuit 30 is connected to the C-phase and neutral lines of the power supply network for coupling the carrier signal in phase from the C-phase power line.
The processor 40 further comprises: and the other at least one switch of the at least four control I/O interfaces is connected with the receiving switch of the three switch pairs and is used for realizing the receiving and the transmitting of the carrier signal.
Specifically, in the case that the at least four control I/O interfaces are six control I/O interfaces, the six control I/O interfaces are connected to each of the three switch pairs in a one-to-one correspondence manner, as shown in fig. 1. That is to say, the actions of the A-phase transmitting switch, the A-phase receiving switch, the B-phase transmitting switch, the B-phase receiving switch, the C-phase transmitting switch and the C-phase receiving switch are respectively controlled by the A-phase transmitting control interface, the A-phase receiving control interface, the B-phase transmitting control interface, the B-phase receiving control interface, the C-phase transmitting control interface and the C-phase receiving control interface, so that the receiving and the transmitting of the carrier signals on the A/B/C three phases of the power line are respectively controlled. In the case where the at least four control I/O interfaces are four control I/O interfaces (not shown), three of the four control I/O interfaces and the transmit switch of the three switch pairs
Connected in a one-to-one correspondence, the other control I/O interface is connected to three receiving switches of the three switch pairs. That is, the a-phase receiving control interface, the B-phase receiving control interface and the C-phase receiving control interface can be combined into one control I/O interface, so that only 4 control I/O interfaces are needed, thereby saving the equipment cost.
The carrier signal may be not only a signal intended to be forwarded to the individual phase meters, but possibly also to the repeater itself to control it to perform certain processing. Therefore, in the embodiment of the present invention, it may be determined whether a destination Terminal Equipment Identity (TEI) carried by a carrier signal is a TEI of a repeater itself, and if the destination TEI is the TEI of the repeater itself, the repeater is controlled to communicate with a device (or a destination device, such as an electrical device or a circuit breaker) connected to the repeater.
The determining module 60 is further configured to analyze an association relationship between a destination TEI and a destination MAC Address (media access Control Address) in the carrier signal and the carrier relay. Correspondingly, the control module 50 is further configured to communicate with the electrical equipment according to the carrier signal if the destination TEI in the carrier signal is the TEI of the carrier repeater and the destination MAC address in the carrier signal is the MAC address of the electrical equipment connected to the carrier repeater. And, the control module 50 is further configured to feed back a result corresponding to the carrier signal acquired from the electric device after the communication with the electric device is completed.
The processor 40 may further include: the RS485 interface 70, the RS485 interface 70 is connected to the electric device, and correspondingly, the controlling module 50 is configured to communicate with the electric device according to the carrier signal, and includes: and under the condition that the carrier signal is used for inquiring or acquiring the related data of the electric equipment, inquiring or acquiring the related data of the electric equipment through the RS485 interface 70.
Specifically, the control module 50 may query the relevant data of the electricity meter 9 through the RS485 interface 70, when the destination TEI of the carrier signal obtained through the analysis by the determination module is the TEI of the carrier relay itself, the destination MAC address in the carrier signal is the MAC address of the electricity meter connected to the carrier relay, and the carrier signal is the relevant data for querying the electricity meter. And, after querying the relevant data of the electricity meter 9, the control module 50 is further configured to feed back the queried relevant data of the electricity meter 9 to a concentrator, as shown in fig. 3. Therefore, the carrier repeater can be used as an independent device for collecting the electricity utilization information of the electricity utilization device.
In addition, the carrier signal may also be a broadcast message forwarded to the three-phase electric meter, so in the embodiment of the present invention, it may be determined whether the carrier signal is a broadcast signal, and in the case that the carrier signal is a broadcast signal, the three switch pairs are controlled to act to forward the carrier signal through the three-phase power line.
The determining module 60 is further configured to determine whether the carrier signal is a broadcast signal when the target TEI in the carrier signal is not the TEI of the carrier repeater. Correspondingly, the control module 50 is further configured to control the three switch pairs to act according to the time slot allocated by the carrier signal when the carrier signal is a broadcast signal, so as to forward the carrier signal through the three-phase power line.
And, the control module 50 is further configured to control the receiving switches in the three switch pairs to close after the carrier signal is forwarded, so as to continue receiving the carrier signal. That is, after the carrier signal is forwarded, the three-phase power lines are all in a monitoring state.
Before executing the embodiments of the present invention, it is necessary to know the phases to which the respective power lines connected to the carrier relay belong (i.e., which line is the a-phase power line, which line is the B-phase power line, and which line is the C-phase power line), and thus, in order to identify the specific phases of the respective power lines connected to the carrier relay, a zero-cross detection module having a phase identification function may be provided in the embodiments of the present invention. The carrier relay may further include: and a zero-crossing detection module 80, configured to identify respective phases to which the three-phase power lines belong. Specifically, the phases of the leftmost power line, the middle power line and the rightmost power line in fig. 1 are identified and obtained by the zero-crossing detection module 80 as an a phase, a B phase and a C phase, respectively; on this basis, the processor receives the carrier signal from a specific phase power line (e.g., phase a) by controlling a receiving switch corresponding to the specific phase power line (e.g., phase a) to be closed, and controls the switch corresponding to the specific phase power line (e.g., phase a) to operate in a relative manner according to a time slot allocated by the carrier signal, so as to forward the carrier signal through the specific phase power line (e.g., phase a). In addition, the zero-crossing detection module 80 can also be used to detect whether the repeater has a power failure, so as to implement a power failure reporting function.
In order to supply power to the carrier repeater, a power supply module for taking power from a phase line and a zero line of a three-phase four-wire system can be arranged in the embodiment of the invention, so that the repeater can still work normally when a certain phase in the A/B/C three-phase is powered off. The carrier relay may further include: a power supply module 90 connected to any one of the three-phase power lines and a zero line, for obtaining power to supply power to the carrier repeater; and/or a memory 110 for storing the relevant programs and relevant parameters in the carrier repeater. The power supply module 90 obtains power from any one phase power line and a zero line of a three-phase four-wire system, and supplies power to each module in the carrier repeater after voltage conversion. For example, fig. 1 shows that the power supply module 90 takes power from a C-phase power line and a zero line as a power supply of the repeater, and can take power from any phase of a/B/C in practical application.
In addition, in order to configure the operating state of the carrier relay by the external device, a corresponding wireless transmission interface may also be provided in the embodiment of the present invention. Thus, the processor 40 may further include: a wireless transmission interface 120, configured to connect to an external device, so as to configure parameters of the carrier relay and/or monitor a network state of carrier communication through the external device; and/or an indicator light interface 130 for connecting with an indicator light to display the current status of the carrier repeater through the indicator light. Wherein, the wireless transmission interface 120 can be an infrared interface or a bluetooth interface; and the external device may be an external PDA (Personal Digital Assistant or palm computer) or a PC (Personal computer).
Specifically, the carrier repeater may be connected to an external PDA or PC through an infrared or bluetooth interface to detect the current working state of the carrier communication link or configure the working state of the carrier repeater. For example, the MAC address of the repeater may be configured to facilitate device management during operation and maintenance installation, or the transmit power parameter of the repeater may be configured to facilitate reducing operational power consumption, or the relay forwarding policy parameter may be configured to facilitate obtaining optimal relay routing performance at different network scales. And the working state of the carrier communication link can be monitored by an external PDA or PC through an infrared interface or a Bluetooth interface, and when the carrier communication link is in failure, related workers can be immediately informed to carry out corresponding maintenance work.
Specifically, the work flow of the carrier repeater will be explained and explained by taking the high-speed power line carrier application network composed in fig. 3 as an example, as shown in fig. 4.
The work flow of the carrier relay may include the following steps S401-S409.
Step S401, the processor controls the A/B/C phase receiving switch to be closed completely through the A/B/C phase receiving control I/O interface, so that the processor is in a three-phase receiving state.
At this time, all the A/B/C phase transmitting switches are in an off state.
In step S402, the processor receives a carrier signal.
Step S403, determining whether the target TEI carried by the carrier signal is a TEI of the carrier relay, if so, executing step S404; otherwise, step S406 is performed.
Step S404, judging whether the destination MAC address carried by the carrier signal is the MAC address of the ammeter connected with the carrier repeater, if so, executing step S405; otherwise, step S401 is executed.
And S405, communicating with the ammeter through an RS485 interface, and returning a communication result.
If the message received by the carrier relay is sent to the carrier relay, the message is not forwarded and is processed. If the message is required to be sent to the self-contained electric equipment, the message is communicated with the self-contained electric equipment through an RS485 interface, and a processing result is returned to the concentrator. Otherwise, the process returns to step S401, and the repeater is still in the three-phase receiving state.
Step S406, determining whether the carrier signal is a broadcast message, if so, performing step S407; otherwise, step S408 is performed.
If the carrier signal is not the message sent to the repeater, the judgment is made again to judge whether the carrier signal is a broadcast message or not
And step S407, controlling three switch pairs to act according to the allocated time slots in the carrier signal so as to forward the carrier signal through the three-phase power line.
If the message is a broadcast message, according to the time slot allocated in the received message, the receiving switches in the three switch pairs are opened (to close the receiving channel) through the a/B/C phase receiving control I/O interface, then the transmitting switches in the three switch pairs are closed (to open the three-phase transmitting channel) through the a/B/C phase transmitting control I/O interface, the message is simultaneously forwarded on the a/B/C three-phase power line, and finally the message is forwarded to all STAs in fig. 3, such as STA 11, STA 21, STA31, and STA 41. And after the forwarding is finished, the three-phase transmitting path is still closed, and the repeater is switched to a three-phase receiving state.
Step S408, judging which phase of the A/B/C phase power line the carrier signal comes from.
And step S409, controlling the corresponding switch pair in the three switch pairs to act according to the time slot allocated in the carrier signal so as to forward the carrier signal through the corresponding power line.
If not, it is determined from which phase the message was received (e.g., it is determined that the message was received from the a-phase power line), and according to the time slot allocated in the received message, the corresponding transmit switch (e.g., transmit switch 101) opens the transmit channel of the corresponding phase, and forwards the message on the corresponding phase (e.g., a-phase power line), and finally the message is forwarded to STA 11 and STA41 in fig. 3. Since the STA41 is a three-phase electric meter, it will also receive the message, but the three-phase electric meter STA41 will determine the destination TEI therein after receiving the message, and will automatically discard if it is not the own TEI. And after the forwarding is finished, closing the transmitting channel and switching the repeater to a three-phase receiving state.
Due to the wiring influence of the three-phase four-wire system power supply line, the power line carrier communication signal is possibly coupled to other phases from the signal originally on the single phase, so that the carrier repeater provided by the embodiment of the invention can also have the function of repeating communication messages to reduce the self-interference of the high-speed power line carrier communication network.
Therefore, the three-phase high-speed power line carrier repeater provided by each embodiment of the invention only has one high-speed power line carrier communication processor, utilizes different control IO interfaces to perform coupling control on carrier signals on a three-phase power line, and utilizes the characteristics of time-sharing receiving and transmitting of the high-speed power line carrier signals to complete the function of relaying and forwarding the high-speed power line carrier signals. When the high-speed power line carrier communication processor works, the A/B/C phase three-phase receiving switches are all closed, and meanwhile, the A/B/C phase transmitting switches are all disconnected through the A/B/C phase transmitting control I/O interface, so that the high-speed power line carrier communication processor is in a receiving state, and at the moment, the carrier repeater is in a three-phase signal all monitoring state. When the carrier signal of any phase is received, the judgment processing is carried out, whether the message is sent to the self or other modules is judged, and the message is respectively forwarded on the corresponding phase line according to the received phase. If the message is broadcast, the message needs to be forwarded on the three-phase power line simultaneously.
In summary, the invention creatively couples the carrier signal from the three-phase power line by controlling the three switch pairs to be closed, and analyzes the information of the carrier signal through the judgment module; then, in the case that the information of the carrier signal indicates that the carrier signal is from a specific phase (for example, phase A) power line, the control module controls the action of the switch pair of the specific phase power line (for example, phase A) according to the time slot allocated by the carrier signal so as to forward the carrier signal through the specific phase power line (for example, phase A), thereby realizing the accurate forwarding of the high-speed power line carrier signal in the three-phase four-wire system power supply network through one carrier repeater.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. A carrier repeater, the carrier repeater comprising:
the three groups of signal coupling circuits are connected with the three-phase power line in a one-to-one corresponding mode and are used for respectively coupling carrier signals from the three-phase power line;
three switch pairs, each of the three switch pairs comprising a transmitting switch and a receiving switch, the three switch pairs being connected with the three sets of signal coupling circuits in a one-to-one correspondence; and
a processor, the processor comprising:
the control module is used for controlling the receiving switches in the three switch pairs to be closed so as to receive the carrier signal; and
a judging module for analyzing the source of the carrier signal,
correspondingly, the control module is further configured to, in a case where the carrier signal is from a specific phase power line of the three-phase power lines, control the switch pair corresponding to the specific phase power line to operate according to a time slot allocated by the carrier signal, so as to forward the carrier signal through the specific phase power line.
2. The carrier repeater according to claim 1, wherein the determining module is further configured to analyze an association relationship between a destination Terminal Equipment Identity (TEI) and a destination MAC address in the carrier signal and the carrier repeater,
correspondingly, the control module is further configured to communicate with the electrical equipment according to the carrier signal when the destination terminal equipment identifier in the carrier signal is the terminal equipment identifier of the carrier repeater and the destination MAC address in the carrier signal is the MAC address of the electrical equipment connected to the carrier repeater.
3. The carrier repeater according to claim 2, wherein the processor further comprises:
an RS485 interface, wherein the RS485 interface is connected with the electric equipment,
correspondingly, the control module is configured to communicate with the powered device according to the carrier signal and includes: and under the condition that the carrier signal is used for inquiring or acquiring the related data of the electric equipment, inquiring or acquiring the related data of the electric equipment through the RS485 interface.
4. The carrier wave repeater according to claim 2, wherein the control module is further configured to feed back a result corresponding to the carrier wave signal obtained from the electric device after the communication with the electric device is completed.
5. The carrier wave repeater according to claim 2, wherein the control module is further configured to feed back a result corresponding to the carrier wave signal obtained from the electric device after the communication with the electric device is completed.
6. The carrier repeater according to claim 1, wherein the control module is further configured to control the receiving switch of the three switch pairs to close after the carrier signal is repeated, so as to continue receiving the carrier signal.
7. The carrier repeater according to claim 1, wherein the processor further comprises:
the wireless transmission interface is used for being connected with external equipment so as to configure parameters of the carrier repeater and/or monitor the network state of carrier communication through the external equipment; and/or
And the indicator light interface is used for being connected with an indicator light so as to display the current state of the carrier repeater through the indicator light.
8. The carrier repeater according to claim 1, further comprising:
and the zero-crossing detection module is used for identifying the phases to which the three-phase power lines belong respectively.
9. The carrier repeater according to claim 1, further comprising:
the power supply module is connected with any one of the three-phase power lines and a zero line and used for acquiring power to supply power to the carrier repeater; and/or
And the memory is used for storing the related programs and the related parameters in the carrier repeater.
10. The carrier repeater according to claim 1, wherein the processor further comprises:
and the other at least one switch of the at least four control I/O interfaces is connected with the receiving switch of the three switch pairs and is used for realizing the receiving and the transmitting of the carrier signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010503187.2A CN111404583B (en) | 2020-06-05 | 2020-06-05 | Carrier wave repeater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010503187.2A CN111404583B (en) | 2020-06-05 | 2020-06-05 | Carrier wave repeater |
Publications (2)
| Publication Number | Publication Date |
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| CN111404583A true CN111404583A (en) | 2020-07-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113034884A (en) * | 2020-12-28 | 2021-06-25 | 国家电网有限公司 | Electric power data acquisition method based on HPLC |
| CN113644936A (en) * | 2021-07-06 | 2021-11-12 | 珠海中慧微电子有限公司 | Three-phase parallel communication method of broadband carrier communication network |
| CN114200201A (en) * | 2021-11-30 | 2022-03-18 | 深圳市国电科技通信有限公司 | Miniaturized electric energy metering device based on HPLC communication technology |
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| US20150123644A1 (en) * | 2013-11-04 | 2015-05-07 | Lsis Co., Ltd. | Transformer for power line communication |
| CN105024747A (en) * | 2015-08-19 | 2015-11-04 | 长沙威胜信息技术有限公司 | Signal relay equipment of power utilization information acquisition terminal |
| CN106788607A (en) * | 2017-03-21 | 2017-05-31 | 广西盛洲电力科技有限公司 | A kind of concentrator communication module based on power wire broadband carrier |
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| US20150123644A1 (en) * | 2013-11-04 | 2015-05-07 | Lsis Co., Ltd. | Transformer for power line communication |
| CN105024747A (en) * | 2015-08-19 | 2015-11-04 | 长沙威胜信息技术有限公司 | Signal relay equipment of power utilization information acquisition terminal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113034884A (en) * | 2020-12-28 | 2021-06-25 | 国家电网有限公司 | Electric power data acquisition method based on HPLC |
| CN113644936A (en) * | 2021-07-06 | 2021-11-12 | 珠海中慧微电子有限公司 | Three-phase parallel communication method of broadband carrier communication network |
| CN114200201A (en) * | 2021-11-30 | 2022-03-18 | 深圳市国电科技通信有限公司 | Miniaturized electric energy metering device based on HPLC communication technology |
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