Low-voltage power distribution and utilization dual-mode communication relay method, low-voltage power distribution and utilization dual-mode repeater, electronic equipment and computer readable storage medium

Abstract

The invention relates to a low-voltage power distribution and utilization dual-mode communication relay method, a low-voltage power distribution and utilization dual-mode repeater, electronic equipment and a computer readable storage medium, and the method comprises the steps: setting a logic address of the low-voltage power distribution and utilization dual-mode repeater as a network access MAC address, and transmitting a network access request according to a repeater equipment type; receiving a network access permission instruction and a terminal equipment identifier fed back by the concentrator communication unit based on a preset grey list mechanism, monitoring channel quality of uplink and downlink communication links in real time after network access succeeds, and performing self-adaptive switching in a plurality of preset communication networking relay modes based on the channel quality, and direct or indirect relay forwarding is carried out based on the current relay mode. The network access and archive management process of the relay equipment is simplified, plug and play is realized, the communication mode can be adaptively switched according to the channel state, and high efficiency and high reliability of data transmission in a complex power distribution and utilization environment are guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of low-voltage power distribution communication technology, specifically relating to a low-voltage power distribution dual-mode communication relay method, a low-voltage power distribution dual-mode repeater, an electronic device, and a computer-readable storage medium. Background Technology

[0002] With the advancement of smart grid construction, the volume of communication services carried by low-voltage power distribution systems is constantly increasing. In practical applications, due to impedance attenuation and noise interference in the power line environment, repeaters are usually required to expand communication coverage and ensure data transmission quality. However, traditional low-voltage power distribution repeater technology has significant limitations in practical applications.

[0003] On the one hand, most existing repeaters adopt a single communication mode. Due to the complex and ever-changing environment at power distribution sites, a single communication channel is easily affected by sudden interference or physical obstruction, leading to unstable communication links and making it difficult to guarantee efficient data transmission. On the other hand, in the existing power distribution network architecture, repeater equipment typically relies on the master station and concentrator for strict equipment file management when connecting to the network. This means that every time a repeater is added, deleted, or replaced on-site, a cumbersome file configuration and approval process must be performed. This mechanism, which heavily relies on file management, results in a huge workload for on-site construction, installation, and commissioning, and high equipment maintenance costs, failing to meet the power distribution network's need for flexible deployment of repeater equipment.

[0004] Furthermore, existing repeaters typically employ fixed data forwarding logic when faced with varying uplink and downlink channel conditions, lacking the ability to flexibly adjust to the current channel quality.

[0005] Therefore, there is an urgent need for a solution that can simplify the process of network access and file management for relay equipment, and can achieve adaptive high-reliability forwarding in complex telecommunications channel environments. Summary of the Invention

[0006] One of the objectives of this invention is to at least solve one or more of the aforementioned problems existing in the prior art. In other words, one of the objectives of this invention is to provide a low-voltage power distribution dual-mode communication relay method, a low-voltage power distribution dual-mode repeater, an electronic device, and a computer-readable storage medium that meet one or more of the aforementioned requirements.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a low-voltage power distribution dual-mode communication relay method, applied to a low-voltage power distribution dual-mode repeater, comprising: Set the logical address of the low-voltage power distribution dual-mode repeater to the network access MAC address, and send a network access request to the concentrator communication unit according to the repeater device type; The concentrator communication unit receives network access permission instructions and assigned terminal device identifiers based on a preset gray list mechanism. The preset gray list mechanism is used to indicate exemption from master station file management for low-voltage power distribution dual-mode repeaters. After successful network access, the channel quality of the uplink and downlink communication links is monitored in real time, and adaptive switching is performed in a variety of preset communication network relay modes based on the channel quality. Upon receiving a data frame to be processed, if it is determined that the destination address of the data frame to be processed is not this node, the data frame to be processed is forwarded directly or indirectly based on the current communication network relay mode.

[0008] As a preferred implementation, the adaptive switching based on channel quality among preset multiple communication network relay modes includes: When the power line carrier channel quality of both the uplink and downlink communication links meets the first preset condition, the system switches to the carrier-to-carrier first relay mode. When the power line carrier channel quality of both the uplink and downlink communication links does not meet the first preset condition, and the wireless channel quality meets the second preset condition, the system switches to the second wireless-to-wireless relay mode. When the power line carrier channel quality of the uplink communication link meets the first preset condition and the wireless channel quality of the downlink communication link meets the second preset condition, the system switches to the third relay mode of carrier-to-wireless communication. When the wireless channel quality of the uplink communication link meets the second preset condition and the power line carrier channel quality of the downlink communication link meets the first preset condition, the system switches to the fourth relay mode of wireless to carrier.

[0009] As a preferred implementation, based on the current communication network relay mode, the data frames to be processed are directly relayed or indirectly relayed, including: When performing direct relay forwarding, the power signal corresponding to the data frame to be processed is transmitted from the input end to the output end; During indirect relay forwarding, the data frames to be processed are demodulated and reframed according to the communication protocol corresponding to the communication network relay mode, and the processed data frames are transmitted to the output end.

[0010] As a preferred implementation, sending a network access request to the concentrator communication unit according to the repeater device type includes: Listen to beacon frames in the power distribution network and parse the source CCO address carried in the beacon frame; Determine whether the source CCO address is consistent with the preset target CCO address of the low-voltage power distribution dual-mode repeater; If so, a network access request is sent to the concentrator communication unit corresponding to the source CCO address.

[0011] In one preferred implementation, receiving a network access permission instruction from the concentrator communication unit based on a preset graylist mechanism includes: Receive network access permission instructions issued by the concentrator communication unit during the network maintenance phase; The network access permission instruction is generated by the concentrator communication unit after determining that the low-voltage power distribution dual-mode repeater belongs to the preset gray list and skips the device file query of the low-voltage power distribution dual-mode repeater.

[0012] In a preferred embodiment, before receiving the communication signal to be forwarded, the method further includes: Detect the zero-crossing signal of the voltage connected to the power line of the low-voltage power distribution dual-mode repeater; Identify the currently connected phase of the low-voltage power distribution dual-mode repeater based on the voltage zero-crossing signal; Based on the currently connected phase, the signal coupling link of the low-voltage power distribution dual-mode repeater is switched to the corresponding phase line.

[0013] In a preferred embodiment, after receiving the data frame to be processed, the method further includes: Perform legality verification on the data frames to be processed; If the data frame to be processed is determined to be a data frame sent by an illegal node, then the data frame to be processed will be filtered and discarded.

[0014] On the other hand, the present invention also provides a low-voltage power distribution dual-mode repeater, including a repeater routing calculation unit, a dual-mode signal processing unit, a signal link selection unit, a three-phase power line coupling module, and a wireless transceiver module; The relay routing calculation unit is used to set the logical address of the low-voltage power distribution dual-mode repeater to the network access MAC address, and control the dual-mode signal processing unit to send the network access request to the concentrator communication unit via the three-phase power line coupling module according to the repeater device type. The relay routing calculation unit is also used to receive network access permission instructions and assigned terminal device identifiers from the concentrator communication unit based on a preset gray list mechanism. The preset gray list mechanism is used to indicate exemption from master station file management for low-voltage power distribution dual-mode repeaters. The relay routing calculation unit is also used to monitor the channel quality of the uplink and downlink communication links in real time after successful network access, and to adaptively switch between multiple preset communication network relay modes based on the channel quality, and control the signal link selection unit to select the corresponding transmission link. The relay routing calculation unit is also used to receive the data frame to be processed via the signal link selection unit. When it is determined that the destination address of the data frame to be processed is not the local node, it coordinates with the signal link selection unit and the dual-mode signal processing unit to perform direct relay forwarding or indirect relay forwarding of the data frame to be processed based on the current communication network relay mode. The signal link selection unit is connected to the three-phase power line coupling module and the wireless transceiver module to send or receive data.

[0015] On the other hand, the present invention also provides an electronic device, including a processor and a memory, the memory being used to store a computer program, and the processor executing the computer program to implement the low-voltage power distribution dual-mode communication relay method as described above.

[0016] On the other hand, the present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the low-voltage power distribution dual-mode communication relay method as described above.

[0017] Compared with existing technologies, the integrated energy supply system for power plant waste heat utilization combining molten salt and high-pressure hot water thermal storage provided by this invention has the following beneficial effects: This invention enables low-voltage power distribution dual-mode repeaters to send network access permission instructions and assigned terminal device identifiers based on a preset gray list mechanism. This allows low-voltage power distribution dual-mode repeaters to be exempt from master station file management when connecting to the power distribution network. This effectively solves the technical defects of traditional repeater equipment, which relies on cumbersome file configuration, resulting in a large workload for on-site construction and commissioning and high operation and maintenance costs. Ultimately, it realizes plug-and-play and rapid network access for repeater equipment.

[0018] Meanwhile, this invention monitors the channel quality of the uplink and downlink communication links in real time after successful network access, and adaptively switches between multiple preset communication network relay modes based on the channel quality. This enables the repeater to dynamically match the current optimal physical transmission medium, thereby effectively overcoming the problem of poor anti-interference capability of a single communication mode in complex power distribution environments, and ultimately achieving high reliability assurance for dual-mode communication links. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the low-voltage power distribution network topology according to an embodiment of the present invention; Figure 2 This is a flowchart of the low-voltage power distribution dual-mode communication relay method according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the business logic for sending a network access request according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the grid connection of the low-voltage power distribution dual-mode repeater according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a low-voltage power distribution dual-mode repeater according to an embodiment of the present invention. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] The following description provides examples and does not limit the scope, applicability, or examples set forth in the claims. Changes may be made to the function and arrangement of the described elements without departing from the scope of the invention. Various processes or components may be appropriately omitted, substituted, or added to the various examples. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Furthermore, features described with respect to some examples may be combined into other examples.

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] To facilitate understanding of the application environment of this invention, a low-voltage power distribution network topology equipped with a dual-mode repeater is first illustrated with reference to the diagram. Specifically, as shown... Figure 1 The power distribution network shown can be constructed as a tree topology with the Concentrator Communication Unit (CCO) as the root node. The downlink communication links of the Concentrator Communication Unit (CCO) are connected to several Agent Coordinator Nodes (PCOs) and ordinary terminal nodes (STAs).

[0024] Considering the long-distance attenuation of communication signals due to the physical environment of the power distribution site, dual-mode repeaters are flexibly connected in series in the original network topology as independent intermediate routing nodes and deployed in the middle layer of the tree topology. Their uplink establishes a communication connection with the upper-level proxy coordinator node (PCO) or concentrator communication unit (CCO), and their downlink establishes a communication connection with the lower-level ordinary terminal node (STA) or other proxy coordinator node (PCO).

[0025] Under this architecture, the addition of dual-mode repeaters helps to extend the backbone network signal to communication blind spots, solves the problem that the equipment cannot directly establish a stable communication link, and thus expands the coverage of the overall power distribution communication network.

[0026] This invention provides a low-voltage power distribution dual-mode communication relay method, which is applied to low-voltage power distribution dual-mode repeaters.

[0027] The flowchart of the low-voltage power distribution dual-mode communication relay method is as follows: Figure 2 As shown, the specific steps can include the following: S100 sets the logical address of the low-voltage power distribution dual-mode repeater to the network access MAC address, and sends a network access request to the concentrator communication unit in combination with the repeater device type. The logical address is constructed according to the preset verification algorithm. S200 receives network access permission instructions and assigned terminal device identifiers from the concentrator communication unit based on a preset gray list mechanism. The preset gray list mechanism is used to indicate exemption from master station file management for low-voltage power distribution dual-mode repeaters. After successful network access, the S300 monitors the channel quality of the uplink and downlink communication links in real time and adaptively switches between various preset communication network relay modes based on the channel quality. S400 receives the data frame to be processed. When it is determined that the destination address of the data frame to be processed is not this node, it performs direct relay forwarding or indirect relay forwarding of the data frame to be processed based on the current communication network relay mode.

[0028] This invention addresses the problem that existing single communication modes struggle to guarantee communication stability and reliability in complex and ever-changing low-voltage power distribution environments. Therefore, it employs a dual-mode communication hybrid network, combined with a graylist mechanism that eliminates the need for master station file lookup. This simplifies the network entry process for relay nodes, reduces the customization and adaptation work required for cross-system applications, and enables rapid establishment of communication links and highly reliable data transmission.

[0029] In one specific embodiment of the present invention, combined with Figure 3 As shown, the specific execution logic of step S100, which involves setting the logical address of the low-voltage power distribution dual-mode repeater to the network access MAC address and sending a network access request to the concentrator communication unit according to the repeater device type, may include: In the process of a low-voltage power distribution dual-mode repeater sending a network access request to the concentrator communication unit, in response to the power-on event of the low-voltage power distribution dual-mode repeater's access circuit, its built-in logical address parameters are set to the current network access MAC address. Subsequently, through a preset communication link, a beacon frame containing CCO address information broadcast by the concentrator communication unit into the network is received. In response to the received beacon frame, a network access request message is constructed, identifying the device type field as a repeater node, and a network access application is initiated to the concentrator communication unit in conjunction with the network access MAC address.

[0030] Considering the device identification barrier problem that exists when multiple manufacturers and brands of equipment are networked together on site, this invention facilitates the connection matching of cross-manufacturer concentrator communication units (CCOs) and terminal devices by using a fixed relay logical address mode and a clear relay identity declaration.

[0031] Upon receiving a network access request, the concentrator communication unit will verify whether the low-voltage power distribution dual-mode repeater belongs to the gray list based on the preset gray list mechanism and the MAC address in the network access request. If it does, it will send back a network access permission instruction.

[0032] To further reduce reliance on lists issued by the main station or manual on-site configuration, one embodiment of the present invention also provides a method for the concentrator communication unit to feed back network access permission instructions based on a preset gray list mechanism. Specifically, the concentrator communication unit confirms whether the low-voltage power distribution dual-mode repeater belongs to the gray list based on a preset verification algorithm and the network access MAC address.

[0033] Specifically, the concentrator communication unit's local storage medium contains a preset verification algorithm that matches the logical address generated by the repeater. Upon receiving a network access request, the concentrator communication unit does not need to query the main station or compare it with the local static address set table. Instead, it directly uses the preset algorithm to verify the legality of the received network access MAC address. For example, the preset verification algorithm might be: extract the first two bytes of the network access MAC address as a feature identifier field (e.g., a preset fixed identifier of "AA"), extract the middle five bytes as a data field, and extract the last byte as a verification field. The concentrator communication unit first determines whether the first two bytes are "AA". If so, it performs a cumulative sum calculation on the middle five bytes to obtain a calculated verification value, and then compares this calculated verification value (8 bits) with the last byte (verification field). If the comparison matches, the concentrator communication unit determines that the network access MAC address verification is successful, confirming that the low-voltage power distribution dual-mode repeater belongs to a legitimate graylist node.

[0034] The above-mentioned MAC address format will be written as a logical address into the firmware of the low-voltage power distribution dual-mode repeater.

[0035] In response to the successful verification result, the concentrator communication unit adds the low-voltage power distribution dual-mode repeater to the network list, assigns a Terminal Equipment Identifier (TEI), and issues a network access permission instruction containing the home CCO address parameter.

[0036] The above method not only makes the gray list authentication rules fixed with the device at the factory and does not require additional distribution from the main station, truly realizing the plug-and-play functionality of the relay device; at the same time, through feature matching at the algorithm level, it greatly improves the network's security protection capability against illegal nodes forging MAC addresses and avoids misjudgments by the concentrator.

[0037] Furthermore, in response to the network access permission interaction command issued by the concentrator communication unit, the low-voltage distribution dual-mode repeater extracts and responds to the home CCO address parameters from the concentrator communication unit to complete the data interaction handshake of the network access request stage and achieve successful network access.

[0038] The above response and network access process is implemented through step S200: receiving the network access permission instruction and the assigned terminal device identifier fed back by the concentrator communication unit based on the preset gray list mechanism.

[0039] Understandably, the concentrator communication unit has a pre-configured graylist in its local storage medium. This graylist maintains a set of addresses for legitimate repeater nodes allowed to access the current power distribution network, thereby enabling independent access control for repeater devices while exempting the master station file management of low-voltage power distribution dual-mode repeaters. Furthermore, the concentrator communication unit compares the repeater address with the locally stored graylist. Upon successful matching, it adds the low-voltage power distribution dual-mode repeater to the network list, assigns a Terminal Equipment Identifier (TEI), and issues a network access permission command containing the home CCO address parameter.

[0040] Considering that the traditional method of adding carrier repeaters multiple times is prone to redundant and repeated communication interactions in the power distribution network due to the regular polling of the master station, this invention introduces a file-free management mechanism based on a gray list. This helps to avoid misjudgments when the concentrator initiates processes such as activating carriers and actively registering slave nodes, thereby avoiding unnecessary and repeated communication interactions with the repeater equipment. This reduces equipment operation and maintenance costs while achieving efficient and accurate signal forwarding.

[0041] In addition, it should be noted that in response to the determination of a matching failure, the concentrator communication unit will remove the dual-mode repeater from the network list and refuse it from joining the network.

[0042] To overcome the technical defect of a single communication link being prone to disconnection in the face of time-varying noise, the present invention adopts step S300 to monitor the channel quality of the uplink and downlink communication links in real time, and to adaptively switch between preset multiple communication network relay modes based on the channel quality.

[0043] In one specific embodiment of the present invention, a method for real-time monitoring of the channel quality of the uplink and downlink communication links in step S300 is provided.

[0044] Specifically, the physical layer listening interface at the bottom of the low-voltage power distribution dual-mode repeater is used to collect the channel characteristic parameters of the current power line (HPLC) and low-power wireless (HRF) channels in real time; among which, the channel characteristic parameters include signal strength parameters and communication quality parameters.

[0045] Furthermore, the channel characteristic parameters are input into a preset channel evaluation model for time-series statistics and quantification calculations, and the comprehensive channel quality evaluation results of the uplink and downlink communication links within the current time period are output.

[0046] The above method, by measuring and quantifying the underlying characteristic parameters of the multi-mode channel in real time, is beneficial to providing accurate and objective underlying data decision support for the adaptive switching of communication modes in the S300.

[0047] In one specific embodiment of the present invention, the preset multiple communication networking relay modes specifically include: a carrier-to-carrier first relay mode, a wireless-to-wireless second relay mode, a carrier-to-wireless third relay mode, and a wireless-to-carrier fourth relay mode.

[0048] The above four modes can cope with the asymmetric attenuation scenario where the power line carrier communication quality and wireless communication signal quality are inconsistent in the uplink and downlink channels of the repeater. This is beneficial for the system to achieve adaptive optimal adaptation of the relay routing forwarding path according to the specific cross-channel state.

[0049] Accordingly, in some further embodiments, the method for adaptive switching can be specifically as follows: Obtain the current power line carrier channel quality and radio channel quality, and objectively compare them with preset handover thresholds respectively: When the power line carrier channel quality of both the uplink and downlink communication links meets the first preset condition, the system switches to the first relay mode, controlling both the uplink and downlink to execute carrier-to-carrier (PLC->PLC) relay communication. When the power line carrier channel quality of both the uplink and downlink communication links does not meet the first preset condition, and the wireless channel quality meets the second preset condition, the system switches to the second relay mode and controls both the uplink and downlink to perform wireless-to-wireless (RF->RF) relay communication link establishment. When the power line carrier channel quality of the uplink communication link meets the first preset condition and the wireless channel quality of the downlink communication link meets the second preset condition, switch to the third relay mode, control the uplink to perform wireless to carrier (RF->PLC) data mapping encapsulation, and the downlink to perform carrier to wireless (PLC->RF) data mapping encapsulation. When the uplink wireless channel quality meets the second preset condition and the downlink power line carrier channel quality meets the first preset condition, the system switches to the fourth relay mode, controls the uplink to perform carrier-to-wireless (PLC->RF) data mapping and encapsulation, and the downlink to perform wireless-to-carrier (RF->PLC) data mapping and encapsulation.

[0050] Specifically, the first preset condition is set to the power line carrier channel quality being greater than or equal to a preset carrier channel quality threshold, and the second preset condition is set to the wireless channel quality being greater than or equal to a preset wireless channel quality threshold.

[0051] Considering the quality degradation of signals during transmission due to factors such as line attenuation and interference, step S400 provides a dual forwarding strategy that combines direct relay and indirect relay. Through protocol processing and communication intervention of indirect relay, it is beneficial to realize protocol conversion, improve signal quality and stability, and thus effectively increase the transmission distance of the signal.

[0052] In one specific embodiment of the present invention, the specific steps of step S400 are also provided: Specifically, in direct relay mode, the internal coupling circuit is directly connected to the three-phase circuit, transmitting the power signal corresponding to the data frame to be processed from the input end to the output end, so as to play the role of signal relay; in this mode, the relay node directly participates in the transmission of the circuit without processing or interfering with the signal frame.

[0053] In indirect relay mode, the data frame to be processed is input to the internal dual-mode signal processing module for processing, and a reframing operation is performed according to the current communication mode, communication protocol and destination address. Then the processed data frame is transmitted to the output end.

[0054] In one specific embodiment of the present invention, after receiving the data frame to be processed, the legality of the data frame to be processed can also be identified.

[0055] During the legitimacy verification process, if the data frame to be processed is determined to be a data frame sent by an illegal node, then the data frame to be processed will be filtered and discarded.

[0056] This implementation takes into account the risks of leakage and tampering that power information may face during transmission. Therefore, it introduces legality monitoring of the behavior of relayed nodes and a dual-mode encryption mechanism, which helps to prevent unauthorized node intrusion and ensure the security of data forwarding.

[0057] Furthermore, to improve the reuse rate of hardware resources and the concurrent routing processing capability of complex networks, the low-voltage power distribution dual-mode repeater of this invention can be logically configured to include two or more virtual repeater instances, such as... Figure 4 As shown in rPCO1 and rPCO2, in a specific network topology scenario, within the same low-voltage power distribution dual-mode repeater, the first virtual repeater instance rPCO1 can provide independent trunk routing services for nodes PCO1, PCO2, PCO3, and STA1-STA3 in the first subnet, while the second virtual repeater instance rPCO2 can provide independent trunk routing services for nodes PCO4, PCO5, and STA4-STA5 in the second subnet. By configuring virtual repeaters, efficient concurrent relaying across multiple areas and branches can be achieved without increasing additional hardware deployment costs.

[0058] Another embodiment of the present invention provides a low-voltage power distribution dual-mode repeater, the schematic diagram of which is shown below. Figure 5 As shown, it includes: a relay routing calculation unit, a dual-mode signal processing unit, a signal link selection unit, a three-phase power line coupling module, and a wireless transceiver module.

[0059] The control terminal of the relay routing calculation unit is connected to the dual-mode signal processing unit and the signal link selection unit respectively; the data transceiver terminal of the dual-mode signal processing unit is connected to the signal link selection unit; and the output terminal of the signal link selection unit is connected to the three-phase power line coupling module and the wireless transceiver module respectively to build a physical channel and send or receive data.

[0060] Specifically, the relay routing calculation unit, as the core control component, is used to set the logical address of the low-voltage power distribution dual-mode repeater as the network access MAC address, and control the dual-mode signal processing unit to send a network access request to the concentrator communication unit via the three-phase power line coupling module, combined with the repeater device type. The logical address is constructed according to a preset verification algorithm. It is also used to receive the network access permission instruction and the assigned terminal device identifier fed back by the concentrator communication unit based on a preset gray list mechanism.

[0061] The preset gray list mechanism is used to indicate exemption from the master station file management of low-voltage power distribution dual-mode repeaters.

[0062] The relay routing calculation unit is also used to monitor the channel quality of the uplink and downlink communication links in real time after successful network access, and adaptively switch between various preset communication network relay modes based on the channel quality, and control the signal link selection unit to select the corresponding transmission link. It is also used to receive data frames to be processed via the signal link selection unit, and when it is determined that the destination address of the data frame to be processed is not this node, based on the current communication network relay mode, coordinate with the signal link selection unit and the dual-mode signal processing unit to perform direct or indirect relay forwarding of the data frame to be processed.

[0063] The dual-mode signal processing unit is used to process the underlying signals under the control and coordination of the relay routing calculation unit, and participate in the transmission of network access requests and the baseband protocol conversion and reassembly of the data frames to be processed. The signal link selection unit is used to perform multiplexing switching in response to the control command output by the relay routing calculation unit, so as to select the corresponding transmission link to connect to the three-phase power line coupling module or the wireless transceiver module. The three-phase power line coupling module and the wireless transceiver module are used as physical transmission media to receive or send data.

[0064] Another embodiment of the present invention provides an electronic device, which may include, but is not limited to, a processor, a memory, and optional communication interfaces and input / output interfaces. The processor may be a central processing unit (CPU), a digital signal processor (DSP), a programmable logic device (FPGA), an application-specific integrated circuit (ASIC), or other processing core capable of executing instructions. In this embodiment, the processor is the control center of the electronic device, responsible for running the computer program stored in the memory to execute one or more steps in the low-voltage power distribution dual-mode communication relay method described in the above embodiments.

[0065] Memory can be any type of volatile or non-volatile storage medium, such as random access memory (RAM), read-only memory (ROM), flash memory, hard disk drive (HDD), solid-state drive (SSD), etc. Memory is used to store operating systems, various data, and computer programs.

[0066] A computer program stored in memory causes an electronic device to perform the low-voltage power distribution dual-mode communication relay method of the foregoing embodiments when its instructions are executed by a processor.

[0067] The foregoing description is merely an exemplary embodiment of this disclosure and should not be construed as limiting the scope of this disclosure. Any equivalent changes and modifications made in accordance with the teachings of this disclosure shall still fall within the scope of this disclosure. Those skilled in the art will readily conceive of other embodiments of this disclosure upon considering the specification and practicing the disclosure herein. This invention is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not described herein. The specification and embodiments are to be considered exemplary only, and the scope and spirit of this disclosure are defined by the claims.

Claims

1. A low-voltage power distribution dual-mode communication relay method, applied to a low-voltage power distribution dual-mode repeater, characterized in that, include: The logical address of the low-voltage power distribution dual-mode repeater is set as the network access MAC address, and a network access request is sent to the concentrator communication unit in combination with the repeater device type. The logical address is constructed according to a preset verification algorithm. The concentrator communication unit receives a network access permission instruction and an assigned terminal device identifier based on a preset gray list mechanism, wherein the preset gray list mechanism is used to indicate exemption from master station file management for the low-voltage power distribution dual-mode repeater. After successful network access, the channel quality of the uplink and downlink communication links is monitored in real time, and adaptive switching is performed in a variety of preset communication network relay modes based on the channel quality. Upon receiving a data frame to be processed, if it is determined that the destination address of the data frame to be processed is not the current node, the data frame to be processed is forwarded directly or indirectly based on the current communication network relay mode.

2. The low-voltage power distribution dual-mode communication relay method according to claim 1, characterized in that, Based on the channel quality, adaptive switching is performed in multiple preset communication network relay modes, including: When the power line carrier channel quality of both the uplink and downlink communication links meets the first preset condition, the system switches to the carrier-to-carrier first relay mode. When the power line carrier channel quality of both the uplink and downlink communication links does not meet the first preset condition, and the wireless channel quality meets the second preset condition, the system switches to the second wireless-to-wireless relay mode. When the power line carrier channel quality of the uplink communication link meets the first preset condition and the wireless channel quality of the downlink communication link meets the second preset condition, the system switches to the third carrier-to-wireless relay mode. When the wireless channel quality of the uplink communication link meets the second preset condition and the power line carrier channel quality of the downlink communication link meets the first preset condition, the system switches to the fourth relay mode of wireless to carrier.

3. The low-voltage power distribution dual-mode communication relay method according to claim 1, characterized in that, Based on the current communication network relay mode, the data frames to be processed are directly relayed or indirectly relayed, including: During direct relay forwarding, the power signal corresponding to the data frame to be processed is transmitted from the input end to the output end; During indirect relay forwarding, the data frame to be processed is demodulated and reframed according to the communication protocol corresponding to the communication network relay mode, and the processed data frame is transmitted to the output end.

4. The low-voltage power distribution dual-mode communication relay method according to claim 1, characterized in that, The network access permission instruction is a command issued by the concentrator communication unit after confirming that the low-voltage power distribution dual-mode repeater belongs to the gray list based on the preset verification algorithm and the network access MAC address.

5. A low-voltage power distribution dual-mode communication relay method according to claim 1, characterized in that, The step of sending a network access request to the concentrator communication unit based on the repeater device type includes: Listen to beacon frames in the power distribution network and parse the source concentrator communication unit address carried in the beacon frame; Determine whether the address of the source concentrator communication unit is consistent with the preset target concentrator communication unit address of the low-voltage power distribution dual-mode repeater; If so, the network access request is sent to the concentrator communication unit corresponding to the source concentrator communication unit address.

6. A low-voltage power distribution dual-mode communication relay method according to claim 1, characterized in that, Receiving the network access permission instruction fed back by the concentrator communication unit based on a preset gray list mechanism includes: Receive the network access permission instruction issued by the concentrator communication unit during the network maintenance phase; The network access permission instruction is generated by the concentrator communication unit after determining that the low-voltage power distribution dual-mode repeater belongs to the preset gray list and skipping the device file query of the low-voltage power distribution dual-mode repeater.

7. A low-voltage power distribution dual-mode communication relay method according to claim 1, characterized in that, Before receiving the data frame to be processed, the method further includes: Detect the zero-crossing signal of the voltage of the low-voltage power distribution dual-mode repeater connected to the power line; The phase currently connected to the low-voltage power distribution dual-mode repeater is identified based on the voltage zero-crossing signal; Based on the currently accessed phase, the signal coupling link of the low-voltage power distribution dual-mode repeater is switched to the corresponding phase line.

8. A low-voltage power distribution dual-mode communication relay method according to claim 1, characterized in that, After receiving the data frame to be processed, it also includes: The legality of the data frame to be processed is verified; If the data frame to be processed is determined to be a data frame sent by an illegal node, then the data frame to be processed is filtered and discarded.

9. A low-voltage power distribution dual-mode repeater, characterized in that, It includes a relay routing calculation unit, a dual-mode signal processing unit, a signal link selection unit, a three-phase power line coupling module, and a wireless transceiver module; The relay routing calculation unit is used to set the logical address of the low-voltage power distribution dual-mode repeater to the network access MAC address, and control the dual-mode signal processing unit to send a network access request to the concentrator communication unit via the three-phase power line coupling module according to the repeater device type. The relay routing calculation unit is also used to receive the network access permission instruction and the assigned terminal device identifier fed back by the concentrator communication unit based on a preset gray list mechanism, wherein the preset gray list mechanism is used to indicate exemption from master station file management of the low-voltage power distribution dual-mode repeater. The relay routing calculation unit is also used to monitor the channel quality of the uplink and downlink communication links in real time after successful network access, and adaptively switch between multiple preset communication network relay modes based on the channel quality, and control the signal link selection unit to select the corresponding transmission link. The relay routing calculation unit is also used to receive the data frame to be processed via the signal link selection unit, and when it is determined that the destination address of the data frame to be processed is not the current node, based on the current communication network relay mode, coordinate with the signal link selection unit and the dual-mode signal processing unit to perform direct relay forwarding or indirect relay forwarding of the data frame to be processed. The signal link selection unit is connected to the three-phase power line coupling module and the wireless transceiver module to send or receive data.

10. An electronic device, characterized in that, It includes a processor and a memory, the memory being used to store a computer program, and the processor executing the computer program to implement the low-voltage power distribution dual-mode communication relay method as described in any one of claims 1 to 8.

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