Plug-and-play communication expansion method and system based on blackboard mode shared ring high-speed ring network technology

Abstract

The embodiment of the invention provides a plug-and-play communication extension method and system based on a blackboard mode shared ring high-speed ring network technology, and belongs to the technical field of power distribution network measurement and control communication. The system comprises a plurality of docking stations and a distributed cooperative control looped network formed based on the docking stations. The docking station is realized through an FPGA semi-customized chip, and the internal integration module comprises a blackboard mode sharing ring network module, a distributed cooperative communication module and an equipment interface management module; the blackboard mode sharing ring network module is used for executing data sharing and transmission; the distributed cooperative communication module is used for executing distributed cooperative control of data; the equipment interface management module is used for identifying power distribution network equipment in a plug-and-play manner and distributing logic node addresses; the distributed cooperative control ring network formed based on the docking stations is connected with all the docking stations to form a double-ring topology, and deterministic transmission of data frames is executed through a hardware-level protocol stack. According to the invention, high-speed, high-reliability and time-deterministic communication problems of a novel low-voltage power distribution network source network load energy storage interaction adjustment and measurement and control protection system can be solved.

Description

Technical Field

[0001] This application relates to the field of power distribution network measurement and control communication technology, and in particular to a plug-and-play communication extension method and system based on blackboard mode shared ring high-speed ring network technology. Background Technology

[0002] Communication technology is a key technology for the measurement, control, protection, and construction of new distribution networks and digital distribution networks. Distribution automation, digitalization, and the realization of distributed smart distribution networks, which rely on source-grid-load-storage interaction, depend on on-site power measurement data and collaborative data between measurement and control terminals. Depending on the different timeliness and reliability requirements, different bandwidths and transmission mechanisms of communication technologies are needed. For the flexible source-grid-load-storage interaction and integrated energy flexible regulation and measurement, control, and protection functions of new distribution networks, control is mainly carried out at the local edge, requiring high-speed, reliable, and time-deterministic communication technologies. For example, distribution automation remote sensing data and digital IoT data are mainly reflected in data transmission with the master station, with timeliness primarily achieved through second-level communication technologies.

[0003] Currently, low-speed communication technologies in power distribution networks include traditional RS232, RS485 / 422, CAN, LonWorks, and HPLC, which primarily address low-speed communication between devices, with speeds mainly below 1 Mbps. Wireless communication technologies are increasingly prevalent in power distribution networks, including RF-Mesh networks on various public frequency bands, dedicated power grids, and VPN technologies such as GPRS / 4G public networks. These technologies meet the needs of data transmission with less time-sensitive requirements via wireless means, with data updates primarily occurring on a second-by-second basis. For high-speed data transmission in power distribution networks, enabling rapid updates of large data volumes and meeting monitoring, control, and protection needs, 100 Mbps or Gigabit Ethernet technologies are primarily used. While 5G technology offers advantages such as high communication speeds and wireless networking capabilities, it currently suffers from high costs and energy consumption. Furthermore, practical engineering applications based on 5G technology are still under exploration, and its security and reliability remain key obstacles to its application in critical power system applications. Summary of the Invention

[0004] The main objective of this application is to provide a plug-and-play communication extension method and system based on blackboard mode shared ring high-speed ring network technology.

[0005] The technical solution adopted in this invention is:

[0006] On one hand, embodiments of the present invention provide a plug-and-play communication extension system based on blackboard mode shared ring high-speed ring network technology. The plug-and-play communication extension system based on blackboard mode shared ring high-speed ring network technology includes several expansion docks and a distributed collaborative control ring network based on the expansion docks.

[0007] The expansion dock is implemented using a semi-custom FPGA chip, and its internal integrated modules include a blackboard mode shared ring network module, a distributed collaborative communication module, and a device interface management module.

[0008] The blackboard mode shared ring network module is used to perform data sharing and transmission; the distributed collaborative communication module is used to perform distributed collaborative control of data; the device interface management module is used to plug and play to identify distribution network equipment and assign logical node addresses;

[0009] The distributed collaborative control ring network based on the expansion docks connects all the expansion docks to form a dual-ring topology, and performs deterministic transmission of data frames through a hardware-level protocol stack.

[0010] Furthermore, the expansion dock also includes a topology management module;

[0011] The topology management module is used to automatically update the ring network topology table and broadcast it to all nodes in response to the access of new devices.

[0012] Furthermore, the expansion dock also includes a remote collaborative data memory mapping mechanism module;

[0013] The remote collaborative data memory mapping mechanism module is used to perform collaborative data interaction between the expansion docks; the remote collaborative data memory mapping mechanism module includes remote internet access collaborative data memory mapping and remote internet disconnection collaborative data memory mapping;

[0014] The remote internet collaborative data memory mapping is used to map the data to be sent generated by the local device from the FIFO memory of the expansion dock to the receiving FIFO memory of the remote node, and perform cross-node data direct transmission.

[0015] The remote offline collaborative data memory mapping is used to map the control command data sent by the remote node from the receiving FIFO memory of the expansion dock to the execution memory area of ​​the local device, so that the execution command is directly executed.

[0016] Furthermore, the expansion dock also includes a local collaborative data memory mapping mechanism module;

[0017] The local collaborative data memory mapping mechanism module is used to perform collaborative data interaction between the expansion dock and the CPU of the control node; the local collaborative data memory mapping mechanism module includes local internet access collaborative data memory mapping and local internet disconnection collaborative data memory mapping;

[0018] The local internet access collaborative data memory mapping is used to synchronize the device's local monitoring data from the device's CPU memory to the sending buffer of the docking station;

[0019] The local offline collaborative data memory mapping is used to synchronize the remote instruction data received by the docking station from the receiving buffer to the device CPU memory, triggering local control actions.

[0020] Furthermore, the expansion dock also includes a data mapping priority control mechanism module;

[0021] The data mapping priority control mechanism module is used to perform priority control of data usage of communication resources.

[0022] Furthermore, the device interface management module is also used to detect the interface type of the access device, obtain device type and communication capability information, and dynamically allocate logical node addresses and FIFO memory areas.

[0023] Furthermore, the power distribution network equipment includes a distributed power controller, smart switches, smart gateways, and converged terminals.

[0024] On the other hand, embodiments of the present invention also provide a plug-and-play communication extension method based on blackboard mode shared ring high-speed ring network technology, which is used to implement the plug-and-play communication extension system based on blackboard mode shared ring high-speed ring network technology as described above. The plug-and-play communication extension method based on blackboard mode shared ring high-speed ring network technology includes the following steps:

[0025] Obtain information on power distribution network equipment;

[0026] Based on the information of the power distribution network equipment, a docking station is used to connect the devices and obtain the identification data of the connected devices.

[0027] Furthermore, the plug-and-play communication extension method based on blackboard mode shared ring high-speed ring network technology also includes the following steps:

[0028] The operating data of the power distribution network equipment is obtained through the expansion dock; the operating data includes voltage, current, and power.

[0029] The operational data is transmitted in a distributed collaborative control ring network based on a docking station, using priority tags.

[0030] Furthermore, the plug-and-play communication extension method based on blackboard mode shared ring high-speed ring network technology also includes the following steps:

[0031] Execute protective actions or energy regulation commands based on the received data.

[0032] The embodiments of this application include at least the following beneficial effects: This application provides a plug-and-play communication extension method and system based on blackboard mode shared ring high-speed ring network technology. The invention includes several expansion docks and a distributed collaborative control ring network constructed based on the expansion docks. The expansion docks are implemented using FPGA semi-customized chips, and their internal integrated modules include a blackboard mode shared ring network module, a distributed collaborative communication module, and a device interface management module. The blackboard mode shared ring network module is used to perform data sharing and transmission; the distributed collaborative communication module is used to perform distributed collaborative control of data; the device interface management module is used for plug-and-play identification of distribution network equipment and allocation of logical node addresses; the distributed collaborative control ring network constructed based on the expansion docks connects all expansion docks to form a double-ring topology, and performs deterministic transmission of data frames through a hardware-level protocol stack. This invention can solve the problem of high-speed, high-reliability, and time-deterministic communication in a novel low-voltage distribution network source-grid-load-storage energy interaction regulation and measurement and control protection system. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the distributed collaborative transmission of AC / DC sampling data of a distributed power supply and intelligent switch CPU system based on a communication expansion dock provided in an embodiment of the present invention.

[0034] Figure 2 This is a schematic diagram of the hardware digital circuit implementation logic provided in the embodiments of the present invention. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit it. In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this application; they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of this application as detailed in the appended claims.

[0036] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various concepts, but unless otherwise stated, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another. For example, without departing from the scope of the embodiments of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the words “if,” “when,” or “in response to a determination” as used herein may be interpreted as “when…” or “when…” or “in response to a determination.”

[0037] As used in this application, the terms "at least one", "multiple", "each", "any", etc., "at least one" includes one, two or more, "multiple" includes two or more, "each" refers to each of the corresponding multiples, and "any" refers to any one of the multiples.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0039] Before providing a detailed description of the embodiments of this application, some of the nouns and terms involved in the embodiments of this application will be explained first. The nouns and terms involved in the embodiments of this application are subject to the following interpretations.

[0040] 1) BSR (Blackboard Sharing Ring): A ring network technology that uses blackboard mode to achieve synchronization of collaborative data on distributed control nodes;

[0041] 2) FPGA (Field-Programmable Gate Array);

[0042] 3) FIFO (First In First Out) memory;

[0043] 4) CPU (Central Processing Unit);

[0044] 5) RAM (Random Access Memory);

[0045] 6) LonWorks (Local Operating Network), an industrial fieldbus protocol;

[0046] 7) CAN (Controller Area Network);

[0047] 8) HPLC (High-speed Power Line Carrier);

[0048] 9) VPN (Virtual Private Network);

[0049] 10) RS232, recommended standard 232, a serial communication interface standard;

[0050] 11) RS485 / 422, recommended standard 485 / 422;

[0051] 12) GPRS / 4G, General Packet Radio Service;

[0052] 13) CSMA / CD, Carrier Sense Multiple Access / Collision Detection.

[0053] This invention addresses the urgent need for a high-speed, reliable, and time-deterministic data synchronization transmission network between field devices in the construction of new power distribution networks. This network is crucial for scenarios involving the interactive regulation of distributed renewable energy sources and widely integrated renewable energy loads, as well as the integration of measurement, control, and protection. This ensures that the data used for energy regulation and protection calculations at each power node in the distributed power distribution network is synchronized at the microsecond level, time-deterministic, and secure. Current industrial Ethernet and 5G technologies cannot guarantee this. Firstly, Ethernet technology itself was not designed for industrial control. Compared to the control data, which is primarily composed of tens of bytes, its 64-byte frame header and complex networking protocols introduce additional overhead. Its load ratio is low, and its transmission efficiency is not high. In particular, the CSMA / CD conflict backoff mechanism and centralized switching technology introduce unreliability and uncertainty into network transmission. Therefore, in practical applications, the data transmission bandwidth is generally required to be less than 30% of the Ethernet bandwidth to ensure the reliability and real-time performance of Ethernet data transmission with a high probability, but absolute reliability cannot be achieved, nor can time determinism below 1 millisecond be guaranteed. On the other hand, although 5G technology brings slicing technology, which can build a local area network within 500 meters of a wireless base station, enabling on-site equipment to achieve end-to-end communication without entering the core network of the 5G public network, it is still a wireless communication technology. Whether it can be applied on a large scale to relay protection and flexible control technology of power generation, grid, load and energy storage in terms of security and reliability remains to be verified. In addition, the construction of base stations, the cost of 5G chips and energy consumption are currently high, and large-scale investment by the power sector has not yet made progress.

[0054] The construction of new power distribution networks is currently accelerating. Exploring advanced, effective, and cost-effective high-speed, highly reliable, and time-deterministic communication technologies to build a backbone monitoring and control network is of great significance for supporting the rapid energy regulation and integrated monitoring and control protection technologies for distributed power sources and critical loads in new power distribution networks, and for their large-scale application.

[0055] This invention aims to solve the communication problems of high speed, high reliability, and time determinism in the energy interaction regulation and monitoring and protection system of new low-voltage distribution network source-grid-load-storage system. It constructs a new low-voltage distribution network backbone monitoring and control network through communication extension technology, supporting the innovation and large-scale application of integrated technology for rapid energy regulation and monitoring and control protection of distributed power sources and important loads in the new distribution network.

[0056] On one hand, embodiments of the present invention provide a plug-and-play communication extension system based on blackboard mode shared ring high-speed ring network technology, referencing... Figure 1 A plug-and-play communication extension system based on blackboard mode shared ring high-speed ring network technology, including several expansion docks and a distributed collaborative control ring network based on the expansion docks;

[0057] The expansion dock is implemented using a semi-custom FPGA chip, and its internal integrated modules include a blackboard mode shared ring network module, a distributed collaborative communication module, and a device interface management module.

[0058] The blackboard-mode shared ring network module is used to perform data sharing and transmission; the distributed collaborative communication module is used to perform distributed collaborative control of data; and the device interface management module is used for plug-and-play identification of distribution network equipment and allocation of logical node addresses.

[0059] A distributed collaborative control ring network based on expansion docks connects all expansion docks to form a dual-ring topology, and performs deterministic transmission of data frames through a hardware-level protocol stack.

[0060] As an optional implementation method, refer to Figure 1 A distributed collaborative control ring network (BSR ring network) based on expansion docks connects n expansion docks to form a double-ring topology, and n expansion docks extend n distributed control nodes.

[0061] The expansion dock disclosed in this embodiment of the invention also includes a topology management module;

[0062] The topology management module is used to automatically update the ring network topology table and broadcast it to all nodes in response to the access of new devices.

[0063] The expansion dock disclosed in this embodiment of the invention also includes a remote collaborative data memory mapping mechanism module;

[0064] The remote collaborative data memory mapping mechanism module is used to perform collaborative data interaction between expansion docks; the remote collaborative data memory mapping mechanism module includes remote internet access collaborative data memory mapping and remote internet disconnection collaborative data memory mapping;

[0065] Remote Internet access collaborative data memory mapping is used to map the data to be sent generated by the local device from the FIFO memory of the expansion dock to the receiving FIFO memory of the remote node, and perform cross-node data direct transmission.

[0066] Remote offline collaborative data memory mapping is used to map control command data sent by remote nodes from the receiving FIFO memory of the expansion dock to the execution memory area of ​​the local device, so that the execution command is directly executed.

[0067] The expansion dock disclosed in this embodiment of the invention also includes a local collaborative data memory mapping mechanism module;

[0068] The local collaborative data memory mapping mechanism module is used to perform collaborative data interaction between the expansion dock and the CPU RAM of the control node; the local collaborative data memory mapping mechanism module includes local internet access collaborative data memory mapping and local internet disconnection collaborative data memory mapping;

[0069] Local Internet access collaborative data memory mapping is used to synchronize the device's local monitoring data from the device's CPU memory to the docking station's transmit buffer;

[0070] Local offline collaborative data memory mapping is used to synchronize remote command data received by the docking station from the receive buffer to the device's CPU memory, triggering local control actions.

[0071] The expansion dock disclosed in this embodiment of the invention also includes a data mapping priority control mechanism module;

[0072] The data mapping priority control mechanism module is used to perform priority control of data usage of communication resources.

[0073] The device interface management module disclosed in this embodiment of the invention is also used to detect the interface type of the access device, obtain device type and communication capability information, and dynamically allocate logical node addresses and FIFO memory areas.

[0074] As an optional implementation, the device interface management module automatically detects the electrical parameters of the interface (such as voltage level and baud rate) to determine the device type.

[0075] The power distribution network equipment disclosed in this invention includes a distributed power controller, a smart switch, a smart gateway, and a converged terminal.

[0076] On the other hand, embodiments of the present invention also provide a plug-and-play communication extension method based on blackboard mode shared ring high-speed ring network technology, which is used to implement the plug-and-play communication extension system based on blackboard mode shared ring high-speed ring network technology as described above. The plug-and-play communication extension method based on blackboard mode shared ring high-speed ring network technology includes the following steps:

[0077] Obtain information on power distribution network equipment;

[0078] Based on the information of the power distribution network equipment, use a docking station to connect the devices and obtain the identification data of the connected devices.

[0079] The plug-and-play communication extension method based on blackboard mode shared ring high-speed ring network technology disclosed in this invention embodiment further includes the following steps:

[0080] The operating data of the power distribution network equipment is obtained through the expansion dock; the operating data includes voltage, current, and power.

[0081] Priority tags are used to transmit operational data in a distributed collaborative control ring network based on expansion docks.

[0082] The plug-and-play communication extension method based on blackboard mode shared ring high-speed ring network technology disclosed in this invention embodiment further includes the following steps:

[0083] Execute protective actions or energy regulation commands based on the received data.

[0084] As an optional implementation, the plug-and-play communication extension technology based on blackboard mode shared ring high-speed ring network technology in this embodiment of the invention is used to construct a new low-voltage distribution network backbone monitoring and control network.

[0085] The overall features of this invention are as follows: This invention employs FPGA-based semi-custom chip technology. Based on the introduction of a blackboard-mode shared ring network protocol, it uses hardware digital circuits to achieve plug-and-play integration of a communication expansion dock with devices such as smart gateways, AC / DC smart switches, and distributed power control units in new low-voltage distribution networks. This constructs a high-speed, highly reliable, and time-deterministic measurement and control protection backbone network, supporting synchronous data acquisition, transmission, and calculation in low-voltage distribution networks. It realizes the innovative research and practical application of integrated measurement and control protection technology for rapid energy regulation of distributed power sources and important loads in new distribution networks. Figure 1 As shown.

[0086] The core features of this invention are: based on FPGA semi-custom chip technology, it implements a memory mapping transmission mechanism for remote collaborative measurement and control data between distributed power sources or load nodes in FIFO memory through hardware digital circuits; a collaborative data interface mapping mechanism between the expansion dock and local nodes; and a data mapping priority control mechanism to achieve deterministic time transmission of collaborative data. The specific hardware digital circuit implementation logic is as follows: Figure 2 As shown.

[0087] The remote collaborative data memory mapping mechanism module, the local collaborative data memory mapping mechanism module, and the data mapping priority control mechanism module are the core components of the expansion dock based on semi-custom chip technology. The remote collaborative data memory mapping mechanism module includes two parts: remote internet access collaborative data memory mapping and remote internet disconnection collaborative data memory mapping, mainly realizing collaborative data interaction between expansion docks. The local collaborative data memory mapping mechanism module includes two parts: local internet access collaborative data memory mapping and local internet disconnection collaborative data memory mapping, mainly realizing collaborative data interaction between the expansion dock and the control node's CPU RAM. The data mapping priority control mechanism module mainly implements priority control of data usage for communication resources, ensuring deterministic transmission of collaborative data. The specific control flow is as follows:

[0088] Collaborative data can be transmitted with the highest priority, while data that does not require real-time transmission, such as configuration management, file transfer, and digital IoT data, can be transmitted with a lower priority, ensuring that collaborative data involved in flexible control and measurement and protection can be transmitted synchronously with strictly defined time.

[0089] 1) The Internet collaboration data in the RAM of the distributed local node CPU and the Internet collaboration data FIFO memory of the expansion dock are mapped and synchronized in hardware memory through the local collaboration data interface mapping mechanism;

[0090] 2) The remote internet access collaborative data of the distributed nodes is mapped between the memory of the remote internet access collaborative data FIFO and the memory of the local offline internet access collaborative data FIFO through the remote collaborative data FIFO mapping mechanism.

[0091] 3) Local offline collaborative data: Through the local collaborative data interface mapping mechanism, the offline collaborative data memory mapping synchronization between the remote offline collaborative data FIFO memory and the local node CPU RAM is realized.

[0092] 4) Under the data mapping priority control mechanism, collaborative data is transmitted with the highest priority. Non-real-time data transmission such as configuration management, file transfer, and digital IoT data is interrupted in a preemptive manner and transmitted first to ensure that collaborative data participating in flexible control and measurement and control protection achieves strict time-determined synchronous transmission.

[0093] The beneficial effects of this invention are as follows:

[0094] 1. Achievable technical performance: The physical channel of the ring network based on the blackboard mode shared ring adopts gigabit fiber optic technology. Taking the collaborative data occupying half of the total bus bandwidth, i.e., 500Mbps, as an example, the following calculations are performed:

[0095] 1) Assuming a single internet connection synchronization of 32 bytes, and 20 nodes simultaneously transmitting data to the same local node, which is 640 bytes, the maximum time taken for the local node to receive the data is 19 * 640 * 10 ns = 12.1 µs.

[0096] 2) Based on the requirement of 32 sampling points per wave and control step size, it is calculated that the sampling data needs to be synchronized within 625us between two samplings. Obviously, the maximum transmission delay between 20 nodes is 12.1us, which is sufficient to meet the transmission waiting time of the next sampling data, thus ensuring that the collaborative data can be smoothly transmitted to the CPU each time.

[0097] 3) Based on a single internet connection synchronization of 32 bytes and an AC power cycle of 32 sampling points or a control beat of 625µs, the maximum number of nodes that can be expanded is 44, i.e., [(n-1)*n*32*20ns / 2]<625µs.

[0098] This means that the communication measurement and control backbone network built using the communication extension technology of this invention can support energy regulation or protection calculations of up to 44 distributed control devices at 625µs cycles, while reserving 500Mbps of bandwidth for other non-real-time data transmission.

[0099] 2. Achievable economic benefits

[0100] This invention provides a communication technology that enables high-speed, high-reliability, and time-deterministic communication for new low-voltage distribution networks. This technology is used to construct the backbone monitoring and control network for new low-voltage distribution networks, supporting the rapid energy regulation and integrated monitoring and control protection technology innovation and large-scale application of distributed power sources and important loads in new distribution networks. This will help promote the construction of new distribution networks and provide effective new technologies.

[0101] The plug-and-play communication extension system based on blackboard mode shared ring high-speed ring network technology in this invention includes several expansion docks and a distributed collaborative control ring network formed by the expansion docks. The expansion docks are implemented using FPGA semi-customized chips, and their internal integrated modules include a blackboard mode shared ring network module, a distributed collaborative communication module, and a device interface management module. The blackboard mode shared ring network module of the expansion dock, based on blackboard mode shared ring technology, and the implemented distributed collaborative communication module, are used to perform distributed collaborative transmission of distributed control data. The device interface management module is used for plug-and-play identification of distribution network equipment and allocation of logical node addresses. A ring network system connecting all expansion docks to form a dual-ring topology executes deterministic transmission of data frames through a hardware-level protocol stack. This invention can solve the problem of high-speed, high-reliability, and time-deterministic communication in a novel low-voltage distribution network source-grid-load-storage energy interaction regulation and measurement and control protection system.

[0102] Key protection points of this invention:

[0103] 1. Overall Technology of Plug-and-Play Communication Extension Technology Based on Blackboard Mode Shared Ring High-Speed ​​Ring Network Technology

[0104] This invention employs FPGA-based semi-custom chip technology. By introducing a blackboard-mode shared ring network protocol, it achieves plug-and-play integration of a communication expansion dock with devices such as smart gateways, AC / DC smart switches, and distributed power control units in new low-voltage distribution networks through hardware digital circuits. This constructs a high-speed, highly reliable, and time-deterministic measurement and control protection backbone network, supporting synchronous data acquisition, transmission, and calculation in low-voltage distribution networks. It also supports the innovative research and practical application of integrated measurement and control protection technology for rapid energy regulation of distributed power sources and critical loads in new distribution networks.

[0105] 2. Core technology of plug-and-play communication extension technology based on blackboard mode shared ring high-speed ring network technology

[0106] Based on FPGA semi-custom chip technology, this system implements a memory mapping transmission mechanism between FIFO memory for remote collaborative measurement and control data between distributed power sources or load nodes, a collaborative data interface mapping mechanism between the expansion dock and local nodes, and a data mapping priority control mechanism to achieve time-deterministic transmission of collaborative data through hardware digital circuits.

[0107] On the other hand, embodiments of the present invention also provide a plug-and-play communication extension device based on blackboard mode shared ring high-speed ring network technology, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the plug-and-play communication extension method based on blackboard mode shared ring high-speed ring network technology as described above.

[0108] The processor and memory can be connected via a bus or other means. Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the processor, which can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0109] On the other hand, embodiments of the present invention also provide a computer-readable storage medium storing computer-executable instructions for causing a computer to execute the plug-and-play communication extension method based on blackboard mode shared ring high-speed ring network technology, as described above.

[0110] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0111] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A plug-and-play communication extension system based on blackboard mode shared ring high-speed ring network technology, characterized in that, The plug-and-play communication extension system based on blackboard mode shared ring high-speed ring network technology includes several expansion docks and a distributed collaborative control ring network based on the expansion docks; The expansion dock is implemented using a semi-custom FPGA chip, and its internal integrated modules include a blackboard mode shared ring network module, a distributed collaborative communication module, and a device interface management module. The blackboard-mode shared ring network module is used to perform data sharing and transmission; the distributed collaborative communication module is used to perform distributed collaborative control of data. The device interface management module is used to identify power distribution network equipment and assign logical node addresses in a plug-and-play manner. The distributed collaborative control ring network based on the expansion docks connects all the expansion docks to form a dual-ring topology, and performs deterministic transmission of data frames through a hardware-level protocol stack.

2. The plug-and-play communication extension system based on blackboard mode shared ring high-speed ring network technology according to claim 1, characterized in that, The expansion dock also includes a topology management module; The topology management module is used to automatically update the ring network topology table and broadcast it to all nodes in response to the access of new devices.

3. The plug-and-play communication extension system based on blackboard mode shared ring high-speed ring network technology according to claim 1, characterized in that, The expansion dock also includes a remote collaborative data memory mapping mechanism module; The remote collaborative data memory mapping mechanism module is used to perform collaborative data interaction between the expansion docks; the remote collaborative data memory mapping mechanism module includes remote internet access collaborative data memory mapping and remote internet disconnection collaborative data memory mapping; The remote internet collaborative data memory mapping is used to map the data to be sent generated by the local device from the FIFO memory of the expansion dock to the receiving FIFO memory of the remote node, and perform cross-node data direct transmission. The remote offline collaborative data memory mapping is used to map the control command data sent by the remote node from the receiving FIFO memory of the expansion dock to the execution memory area of ​​the local device, so that the execution command is directly executed.

4. The plug-and-play communication extension system based on blackboard mode shared ring high-speed ring network technology according to claim 1, characterized in that, The expansion dock also includes a local collaborative data memory mapping mechanism module; The local collaborative data memory mapping mechanism module is used to perform collaborative data interaction between the expansion dock and the CPU of the control node; the local collaborative data memory mapping mechanism module includes local internet access collaborative data memory mapping and local internet disconnection collaborative data memory mapping; The local internet access collaborative data memory mapping is used to synchronize the device's local monitoring data from the device's CPU memory to the sending buffer of the docking station; The local offline collaborative data memory mapping is used to synchronize the remote instruction data received by the docking station from the receiving buffer to the device CPU memory, triggering local control actions.

5. The plug-and-play communication extension system based on blackboard mode shared ring high-speed ring network technology according to claim 1, characterized in that, The expansion dock also includes a data mapping priority control mechanism module; The data mapping priority control mechanism module is used to perform priority control of data usage of communication resources.

6. The plug-and-play communication extension system based on blackboard mode shared ring high-speed ring network technology according to claim 1, characterized in that, The device interface management module is also used to detect the interface type of the access device, obtain device type and communication capability information, and dynamically allocate logical node addresses and FIFO memory areas.

7. The plug-and-play communication extension system based on blackboard mode shared ring high-speed ring network technology according to claim 1, characterized in that, The power distribution network equipment includes distributed power controllers, smart switches, smart gateways, and converged terminals.

8. A plug-and-play communication extension method based on blackboard mode shared ring high-speed ring network technology, used to implement a plug-and-play communication extension system based on blackboard mode shared ring high-speed ring network technology as described in any one of claims 1 to 7, characterized in that, The plug-and-play communication extension method based on blackboard mode shared ring high-speed ring network technology includes the following steps: Obtain information on power distribution network equipment; Based on the information of the power distribution network equipment, a docking station is used to connect the devices and obtain the identification data of the connected devices.

9. The plug-and-play communication extension method based on blackboard mode shared ring high-speed ring network technology according to claim 8, characterized in that, The plug-and-play communication extension method based on blackboard mode shared ring high-speed ring network technology further includes the following steps: The operating data of the power distribution network equipment is obtained through the expansion dock; the operating data includes voltage, current, and power. The operational data is transmitted in a distributed collaborative control ring network based on a docking station, using priority tags.

10. The plug-and-play communication extension method based on blackboard mode shared ring high-speed ring network technology according to claim 8, characterized in that, The plug-and-play communication extension method based on blackboard mode shared ring high-speed ring network technology further includes the following steps: Execute protective actions or energy regulation commands based on the received data.

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