Electric power internet of things edge intelligent gateway device based on electric power system and management method

Abstract

The application provides an edge intelligent gateway device of a power internet of things based on an electric power system and a management method. Through a high-performance backboard and a flexible hot plug design, the application realizes the modularity and expansibility of the power internet of things equipment. In combination with the coordinated work of an intelligent master control card, a two-layer switching card and a heterogeneous subsystem card, the high-speed transmission of data, protocol conversion, intelligent management of network traffic and fault-tolerant switching are guaranteed, so that the high reliability, real-time performance and efficient operation of the system are ensured, and the multi-protocol data communication demand of the power internet of things is adapted.

Description

Technical Field

[0001] This invention relates to the fields of power automation, Internet of Things and industrial communication technology, and specifically to a modular edge intelligent gateway device and its collaborative management method for use in scenarios such as power distribution networks and substations, which integrates routing and switching, intelligent main control, multi-network access and rack management functions. Background Technology

[0002] In the construction of new power systems, edge devices exhibit characteristics of multi-source heterogeneity, massive access, and real-time services, facing extremely high requirements: local data processing, multi-protocol conversion, reliable data transmission, and unified operation and maintenance. Current solutions mainly rely on general industrial gateways or device stacking, but have the following shortcomings: 1. Existing devices typically implement network switching, service computing, and communication access using different boards or devices, resulting in low collaboration efficiency and difficulty in achieving advanced functions such as intelligent link switching and clock synchronization. 2. The management of heterogeneous boards within the chassis lacks unified identity authentication, asset tracking, and fault pre-isolation capabilities, and the operation and maintenance process still relies on manual intervention, lacking automated management. 3. In existing solutions, the switching mechanism often relies on a single detection source, and the clock synchronization source and anti-interference capabilities are weak, failing to meet the power industry's requirements for equipment in high-interference environments, such as failing to meet the national standard's level 4 surge and pulse magnetic field immunity requirements. 4. The core chips and operating systems of existing devices are usually provided by foreign manufacturers that are not domestically controlled, making it difficult to flexibly adapt to power industry-specific protocols (such as carrier waves and WAPI), resulting in a limited application ecosystem.

[0003] Therefore, the development of edge intelligent gateways for the power Internet of Things urgently needs to meet the requirements of high integration, intelligence and reliability, security and controllability, and compliance with power industry standards, so as to adapt to the power system's demand for efficient, intelligent and maintainable equipment. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a power Internet of Things edge smart gateway device and management method based on the Dianhong system, so as to overcome the shortcomings of the existing technology.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: Firstly, a power IoT edge smart gateway device based on the Dianhong system includes: a chassis for accommodating and fixing various subsystem boards, the chassis providing adaptable card slots and achieving detachable connection through the connection mechanism between the card slots and each board; and a high-performance backplane, set inside the chassis, for providing a PCIE data bus and a dedicated rack management bus to realize electrical and data connections between each board. The Elec-Tech main control card includes an MCU module and a Layer 3 switching processing module. The MCU module is used for the detection, identification, management, and security control of the board slots, and for monitoring the alarms and status of each subsystem board. The Layer 3 switching processing module is used for routing, data transmission, IP distribution, and protocol interoperability between the connected subsystem boards. The Layer 2 switching card has an embedded dual-homing switching control module and an NTP client module, which are used to control data traffic forwarding and link switching. A heterogeneous subsystem card is used to support multi-protocol conversion and data communication in a power Internet of Things (IoT) environment.

[0006] In some embodiments, the Elec-Tech main control card is also equipped with an NFC Tag chip for storing device asset information and supporting local near-field authentication and reading.

[0007] In some embodiments, the heterogeneous subsystem card includes at least a carrier relay card, a wireless private network card, and a wireless multifunction card.

[0008] In some embodiments, the chassis is made of metal or high-strength plastic and has impact resistance and electromagnetic shielding functions; the electrical performance indicators of the device include: insulation resistance ≥5MΩ, dielectric strength 0.5kV, impulse voltage 2.0kV, electrostatic discharge immunity 8KV for contact discharge, and surge immunity 4KV for line to ground.

[0009] In some embodiments, the Layer 2 switching card is a northbound access unit. The Layer 2 switching card communicates with the Elec-Tech main control card through a private protocol and performs traffic forwarding and switching control.

[0010] In some embodiments, the hardware of the Elec-Tech main control card is based on an RK3568 quad-core ARM processor and a Layer 2 switching chip that supports VLANs.

[0011] In some embodiments, the Elec-Tech main control card runs the Elec-Tech operating system and supports the deployment of power Internet of Things (IoT) applications through Docker containers.

[0012] Secondly, a smart dual-homing switching method based on the Dianhong system is applied to the device described in the first aspect, the method comprising: The Layer 2 switching card detects the physical link status of its northbound port; Each slave unit managed by a heterogeneous subsystem card reports the logical and service status of the link to the Elec-Tech main control card; The Elec-Tech main control card integrates the logical state and service state, and makes a soft decision based on the preset private network priority principle; After the judgment, the Elec-Tech main control card sends a switching command to the Layer 2 switching card, and the Layer 2 switching card performs a switch of the data traffic forwarding path according to the switching command.

[0013] Thirdly, a clock synchronization management method based on the Dianhong system is applied to the device described in the first aspect, the method comprising: The main control card of the Elec-Hong dynamically discovers the IRIG-B signal provided by the wireless private network card and the NTP signal provided by the Layer 2 switching card. When both are available, control the entire system to lock the IRIG-B signal as the master clock source; When the IRIG-B signal is unavailable or the wireless private network card is absent, the system automatically switches to the NTP signal as the system clock reference.

[0014] Fourthly, an asset management method based on the Dianhong system is applied to the device described in the first aspect, the method comprising: Perform remote whitelist authentication on newly inserted heterogeneous subsystem cards; if authentication fails, perform remote power-down isolation. Local near-field read / write operations are performed using the NFC chip on the Elec-Tech main control card to obtain device asset information; Summarize the asset status of each card and synchronize it to the remote network management center.

[0015] A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described above.

[0016] A computer device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the steps of the method described above.

[0017] In summary, this invention offers the following advantages: Through a high-performance backplane and flexible hot-swappable design, this application achieves modularity and scalability for power IoT devices. By coordinating the operation of the intelligent main control card, Layer 2 switching card, and heterogeneous subsystem cards, it ensures high-speed data transmission, protocol conversion, intelligent network traffic management, and fault-tolerant switching, thereby guaranteeing high system reliability, real-time performance, and efficient operation, and adapting to the multi-protocol data communication needs of the power IoT. Attached Figure Description

[0018] Figure 1 This is a hardware architecture and functional block diagram of the power Internet of Things edge smart gateway device of the present invention; Figure 2 This is a flowchart of the multi-source information fusion and soft decision-making process of the intelligent dual-homing switching method of the present invention; Figure 3 This is a flowchart of the clock synchronization management process of the Elec-Tech main control card in an embodiment of the present invention; Figure 4 This is a flowchart illustrating the rack slave clock synchronization management process in an embodiment of the present invention. Figure 5 This is a flowchart of the asset management process for the main control card of the Dianhong system in an embodiment of the present invention; Figure 6 This is a flowchart of the on-site asset inventory process in an embodiment of the present invention; Figure 7 This is a schematic diagram of a typical application deployment of the device of the present invention in a power distribution network area. Detailed Implementation

[0019] To make the objectives, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0020] In this application embodiment, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent the existence of A alone, the simultaneous existence of A and B, or the existence of B alone. A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0021] Those skilled in the art will recognize that the units and algorithm steps described in the embodiments disclosed herein can be implemented using electronic hardware, computer software, or a combination of electronic hardware and software. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0022] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0023] In the several embodiments provided in this application, any function, if implemented as a software functional unit and sold or used as an independent product, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0024] The above description is merely a specific embodiment of this application. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application. The protection scope of this application should be determined by the protection scope of the claims.

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Example 1 The power IoT edge smart gateway device based on the Dianhong system includes: The chassis, used to house and secure the various subsystem boards, provides compatible card slots and enables detachable connections between the slots and the boards through a connection mechanism. Specifically, this chassis serves as the outer shell of the entire power IoT edge smart gateway device, primarily housing all the internal subsystem boards. The card slots within the chassis are precisely designed to accommodate different types of boards. The slot design ensures easy insertion and removal of boards, featuring hot-swappable functionality, allowing board replacement during device operation without affecting other parts of the system. The connection mechanism between the chassis and the boards uses standardized pluggable connectors, such as PCIe connectors or other high-frequency connectors, ensuring stable signal transmission and excellent electrical performance. The connection mechanism design securely holds the boards in place, preventing loosening or poor contact due to vibration or changes in the external environment.

[0027] A high-performance backplane, located within the chassis, provides a PCIe data bus and a dedicated rack management bus, enabling electrical and data connections between various boards. Specifically, the backplane is a critical component within the chassis, providing electrical connections and data exchange paths between all boards. The PCIe data bus is used for high-speed data transmission, ensuring low-latency, high-bandwidth data exchange between boards, which is particularly crucial during multi-protocol conversion and large-volume data transmission between heterogeneous subsystem cards. The dedicated rack management bus (CMM / CMS management bus) is used for management and monitoring of the subsystem boards within the chassis. Through this bus, the Elec-Tech main control card can obtain real-time information such as the operating status, power consumption, and temperature of the subsystem boards, performing fault detection and management. In this embodiment, the high-performance backplane ensures stable connections between boards, avoids signal attenuation and data loss, supports high-frequency and efficient data exchange and real-time management, and provides assurance for real-time performance and reliability in power IoT applications.

[0028] The Elec-Tech main control card includes: an MCU module and a three-layer switching processing module; The MCU module is used to detect, identify, manage, and control the card slots, and monitor the alarms and status of each subsystem card. The MCU module is the core control unit of the Elec-Tech main control card. It is responsible for monitoring the insertion and removal of cards inside the chassis, detecting and identifying the status of each card, and performing safety controls to ensure that the inserted cards are correct and functional. The MCU module also monitors the alarms and status of each card, and can issue alarm signals and isolate faults when cards malfunction or operate abnormally. The Layer 3 switching module is used to implement routing, data transmission, IP distribution, and protocol interoperability between the connected subsystem boards. This module is responsible for routing data streams between different subsystem boards, determining the path of data packets from one board to another. It also distributes data streams via IP, ensuring correct transmission based on IP addresses, and enables protocol interoperability, allowing different types of boards to exchange data using different communication protocols such as TCP / IP, UDP, and Modbus. This module's design allows the entire system to adapt to data communication using different protocols, meeting the multi-protocol requirements of the power Internet of Things (IoT) environment.

[0029] The Layer 2 switch card, embedding a dual-homing handover control module and an NTP (Network Time Protocol) client module, is used to control data traffic forwarding and link switching. Specifically, the Layer 2 switch card is a key component responsible for physical link forwarding and local network management. It manages data flow within the local area network through the switching chip and uses MAC addresses for packet forwarding and routing. The Layer 2 switch card ensures efficient and secure data transmission across all subsystem boards within the system. The dual-homing handover control module is responsible for implementing dual-homing handover (i.e., switching between private and public networks). When the private network fails or becomes unavailable, the module automatically switches the data flow to the public network or other alternative paths. This mechanism guarantees high availability and fault tolerance; even if a part of the network experiences a problem, data transmission will not be interrupted. The NTP client module is responsible for synchronizing the time of all boards in the network, ensuring that all components in the entire system maintain a consistent clock. NTP ensures the accuracy and consistency of time during real-time data processing, which is particularly crucial for data acquisition and analysis in the power Internet of Things (IoT).

[0030] Heterogeneous subsystem cards (SSBs) are used to support multi-protocol conversion and data communication in the power Internet of Things (IoT) environment. Specifically, SSBs are multi-functional boards that support data communication and protocol conversion across different protocols. For example, wireless private network cards, carrier relay cards, video surveillance cards, and sensor cards can all connect to the main network through these heterogeneous cards and support protocol conversion. By adapting to different protocols, these cards enable the system to handle data streams from various sources and formats, ensuring interoperability between devices in the power IoT. In the power IoT, different devices and systems may use different communication protocols, such as Modbus, CAN, Zigbee, and LoRa. Heterogeneous subsystem cards perform protocol conversion through internal hardware and software mechanisms, enabling seamless interoperability within the system and ensuring accurate data transmission and processing.

[0031] This device achieves modularity and scalability for power IoT devices through a high-performance backplane and flexible hot-swappable design. Combined with the coordinated operation of the intelligent main control card, Layer 2 switching card, and heterogeneous subsystem cards, it ensures high-speed data transmission, protocol conversion, intelligent network traffic management, and fault-tolerant switching, thereby guaranteeing high system reliability, real-time performance, and efficient operation, adapting to the multi-protocol data communication needs of the power IoT.

[0032] Furthermore, the main control card of the Elec-Tech is also equipped with an NFC Tag chip, which is used to store device asset information and support local near-field authentication and reading.

[0033] Specifically, the NFC Tag chip is a hardware module integrated within the Elec-Tech main control card, specifically designed to store device asset information. An NFC chip typically includes a micro-integrated circuit and an antenna, used to transmit the stored data to an external reading device (such as a mobile phone or a dedicated reader) via near-field wireless technology. As part of asset management, the NFC chip stores important information related to the device, such as device serial number, asset tag, maintenance records, installation date, and usage status. This information helps maintenance personnel track and manage the device's lifecycle in real time. The asset information stored in the NFC chip includes all necessary data related to the device, including but not limited to the device's unique identifier (such as serial number, model, manufacturer information, etc.), maintenance status, fault history, years of use, and location. This information may need to be updated throughout the device's lifecycle, ensuring the transparency and effectiveness of device management. Through NFC technology, maintenance personnel can perform local near-field authentication using smartphones, tablets, or other NFC-enabled devices. The authentication function can verify the legitimacy and identity of a device by scanning the information in the NFC chip, while ensuring the security of the device and preventing unauthorized devices from accessing the system. With the help of the NFC chip, asset information can be automatically updated and stored throughout the device's lifecycle, ensuring that the device's management information is always up-to-date and complete.

[0034] Furthermore, the heterogeneous subsystem card includes at least a carrier relay card, a wireless private network card, and a wireless multifunction card.

[0035] Specifically, heterogeneous subsystem cards (RSCs) refer to multi-functional expansion cards within a system. They are typically designed to support different types of communication protocols and data processing tasks in a power IoT environment. These cards can have different hardware and software characteristics, specifically designed to support multi-protocol interoperability and data conversion with other components of the system. The design goal of heterogeneous subsystem cards is to enable the system to adapt to diverse communication needs. In the power IoT, common protocols such as Modbus, CAN, Zigbee, LoRa, and WAPI can convert signals from different devices into standardized data streams and ensure reliable information transmission. Among these, carrier relay cards can receive signals from other devices and relay and forward these signals across power lines, thereby enabling information transmission. Carrier relay cards are used to support complex power line environments, such as high-noise and high-interference power networks, ensuring stable data transmission even in such environments. The wireless private network card supports private network protocols, enabling efficient, low-latency data communication with other devices in a dedicated network. This ensures the security and stability of data transmission. Unlike traditional public networks, private network communication is designed with greater emphasis on security and reliability. The wireless private network card effectively avoids public network interference and security threats, ensuring that sensitive power system data is not interfered with by third parties during transmission. The wireless multi-function card can communicate wirelessly with different types of devices, including traditional Wi-Fi, low-power Zigbee, and long-range LoRa, ensuring interoperability between devices. This facilitates large-scale deployments of the power Internet of Things (IoT), such as smart meters and sensor networks.

[0036] In this embodiment, by integrating a carrier relay card, a wireless private network card, and a wireless multifunction card into a heterogeneous subsystem card, multi-protocol communication and data conversion between power IoT devices can be achieved, effectively solving the communication incompatibility problem between different devices. Each card provides different wireless or power line carrier communication functions, enabling devices to maintain reliable data transmission and processing in various environments. Simultaneously, the application of heterogeneous subsystem cards in the power IoT enhances the flexibility, reliability, and scalability of the entire system, providing strong support for the intelligent upgrading of power systems.

[0037] Furthermore, the chassis is made of metal or high-strength plastic and has impact resistance and electromagnetic shielding functions; the device meets the electrical performance indicators: insulation resistance ≥5MΩ, dielectric strength 0.5kV, impulse voltage 2.0kV, electrostatic discharge immunity 8KV for contact discharge, and surge immunity 4KV for line to ground.

[0038] Specifically, the chassis needs to withstand certain external impacts in power IoT application scenarios to prevent equipment damage caused by mechanical shocks, vibrations, or drops. The chassis materials and design (such as reinforced shells and embedded shock-absorbing structures) can effectively absorb external impact forces, thereby protecting sensitive internal components from damage. Simultaneously, the chassis must also possess electromagnetic shielding capabilities to prevent external electromagnetic interference from affecting the normal operation of the equipment, while reducing the equipment's own electromagnetic radiation, meeting the stringent electromagnetic compatibility requirements of the power industry. This ensures stable operation of the equipment in the complex electromagnetic environment of the power system. Electrical performance indicators ensure that the equipment has sufficient electrical isolation, voltage surge protection, and electrostatic discharge (ESD) protection capabilities, enabling it to continue operating normally under conditions of transient overvoltages and electrical interference in the power system, guaranteeing the long-term stability and safety of the equipment.

[0039] Furthermore, the Layer 2 switching card is a northbound access unit. The Layer 2 switching card communicates with the Elec-Tech main control card through a proprietary protocol and performs traffic forwarding and switching control.

[0040] Specifically, in the overall system architecture, northbound access refers to the connection with upstream systems, such as cloud platforms, data centers, or other higher-level management systems. The Layer 2 switch, as the northbound access unit, is responsible for communication between the device's internal local area network and higher-level external network systems. Through a proprietary protocol, the Layer 2 switch can efficiently and securely exchange data with the Elec-Tech main control card, the core control unit of the system, which communicates with the Layer 2 switch via this proprietary protocol. This protocol ensures reliable, low-latency data exchange between the two and can handle high-frequency data streams. The Layer 2 switch is responsible for forwarding data streams, i.e., determining the path of data from the source node to the destination node. The Layer 2 switch ensures that data streams are correctly delivered to the corresponding subsystem boards within the local area network. Through this function, the Layer 2 switch guarantees efficient and seamless information exchange between various subsystem boards. In some cases, the Layer 2 switch needs to control data stream switching. For example, when a network failure occurs, the Layer 2 switch needs to be able to switch data stream paths, ensuring data flows from one link to another, maintaining network stability and availability. Under the principle of prioritizing private networks, when a problem occurs in the private network, the Layer 2 switch is responsible for switching the data flow to an alternative path for transmission, avoiding data loss. In summary, this embodiment uses a Layer 2 switch as the northbound access unit. This technical solution can effectively manage the data flow from subsystem boards to upstream systems and communicate efficiently with the Elec-Tech main control card through a proprietary protocol. The Layer 2 switch is also responsible for traffic forwarding and switching control, ensuring that data can quickly adjust its transmission path when the network changes, thus guaranteeing the stability and reliability of the power IoT system.

[0041] Furthermore, the hardware of the Elec-Tech main control card is based on an RK3568 quad-core ARM processor and a Layer 2 switching chip that supports VLANs; the software runs the Elec-Tech operating system and has a built-in Docker container engine.

[0042] Specifically, the four cores allow the Elec-Tech main control card to handle multiple tasks simultaneously, making it particularly suitable for power IoT environments requiring high concurrency and low latency. Multiple cores also enable higher multitasking capabilities, improving overall system performance. The RK3568 processor provides powerful computing capabilities, while its high-efficiency design allows the device to reduce power consumption while maintaining performance, making it suitable for long-term stable operation, especially in edge computing scenarios where it can optimize energy consumption. A VLAN-enabled Layer 2 switch chip handles data flow within the local area network, using MAC addresses for packet forwarding and differentiating different virtual network traffic based on VLAN identifiers. This chip effectively isolates and forwards traffic from different VLANs, ensuring no data leakage or conflicts occur between virtual networks, thus improving network security and reliability. The Elec-Tech OS (openEuler) is an open-source operating system designed for cloud computing and edge computing scenarios, featuring high reliability, high performance, and scalability. Elec-Tech OS provides a stable operating environment for the Elec-Tech main control card, supporting the management and configuration of various hardware devices, and is particularly suitable for embedded systems and IoT devices. The integration of a Docker container engine into the Elec-Tech main control card means that multiple containerized applications (such as power IoT applications, data acquisition and analysis programs, etc.) can run within the operating system. Each container has an independent runtime environment, avoiding software conflicts and resource consumption issues. By combining the RK3568 processor, VLAN-supported Layer 2 switching chip, Elec-Tech operating system, and Docker container engine, the Elec-Tech main control card can provide efficient, secure, and reliable computing, networking, and application support in complex power IoT environments, ensuring high system availability and high performance.

[0043] Example 2 A smart dual-homing switching method based on the Dianhong system is applied to the device described in Embodiment 1. The method includes: The Layer 2 switching card detects the physical link status of its northbound port; Each slave unit managed by a heterogeneous subsystem card reports the logical and service status of the link to the Elec-Tech main control card; The Elec-Tech main control card integrates the logical state and service state, and makes a soft decision based on the preset private network priority principle; After the judgment, the Elec-Tech main control card sends a switching command to the Layer 2 switching card, and the Layer 2 switching card performs a switch of the data traffic forwarding path according to the switching command.

[0044] Specifically, in practical applications, the Layer 2 switch card will detect whether the link is normal by reading the MAC address of the port or the link probe packet. If the link is disconnected, the connection is unstable or the transmission quality is poor, the Layer 2 switch card will mark the link as abnormal and prepare to perform path switching.

[0045] Heterogeneous subsystem cards (SSCs) are used to support various protocol conversions and data communications in power IoT environments. These may include wireless private network cards, carrier relay cards, video surveillance cards, etc., with each card responsible for monitoring the health status and operational status of a specific subsystem. Each SSC has a slave unit responsible for acquiring and storing the subsystem's status information. This information includes, but is not limited to, logical status, such as whether the network connection is normal and whether the protocol is compatible, and service status, such as whether service traffic was successfully received and its quality.

[0046] As the core control unit of the system, the Elec-Tech main control card comprehensively evaluates the logical status of each subsystem card, such as link health and service status, such as data traffic stability and packet loss. This process is based on real-time feedback information, ensuring that the system can make optimization decisions based on the latest status. The Elec-Tech main control card prioritizes using dedicated networks as the path for data flow forwarding. Dedicated networks typically have better stability and lower latency, so they are preferred when network conditions are good. Switching to other alternative paths only occurs if the dedicated network fails or becomes unstable. Soft decision refers to dynamic judgment based on system status information, rather than fixed switching rules. The Elec-Tech main control card comprehensively judges whether a switch is needed based on real-time data from each heterogeneous subsystem card, including link quality, traffic conditions, and the preset dedicated network priority principle. For example, if the dedicated network link quality is poor, the Elec-Tech main control card makes a judgment based on the received data, deciding whether to switch to the public network. The judgment criteria include the actual bandwidth, latency, and packet loss rate of the link. If the dedicated network can still provide basic services, the Elec-Tech main control card may choose to continue using the dedicated network until the link quality deteriorates further.

[0047] When the Elec-Tech main control card determines the switching path based on the soft decision result, it generates and sends a switching command. The Layer 2 switch updates its data stream forwarding path according to the Elec-Tech main control card's command. The Layer 2 switch is responsible for forwarding the data stream from the original path to the new path, ensuring continuous data transmission and minimizing latency and interruptions during switching.

[0048] The intelligent dual-homing switching method based on the Dianhong system, through a soft decision mechanism and the principle of private network priority, can realize intelligent switching of network paths in the power Internet of Things system, ensuring that the system can automatically select the best path when the network environment changes, thereby improving the system's stability, reliability and automated management capabilities.

[0049] Example 3 A clock synchronization management method based on the Dianhong system, applied to the device described in Embodiment 1, the method includes: The main control card of the Elec-Hong dynamically discovers the IRIG-B signal provided by the wireless private network card and the NTP signal provided by the Layer 2 switching card. When both are available, control the entire system to lock the IRIG-B signal as the master clock source; When the IRIG-B signal is unavailable or the wireless private network card is absent, the system automatically switches to the NTP signal as the system clock reference.

[0050] Specifically, the Elec-Tech main control card is responsible for coordinating the work of various subsystem boards and managing clock synchronization. To ensure time consistency across all devices in the system, the Elec-Tech main control card needs to be able to detect and select a suitable clock source. The Elec-Tech main control card can automatically identify and acquire available clock signals based on the current network environment. It dynamically selects a suitable clock source by detecting and scanning the clock signals of different devices in the network. IRIG-B is a commonly used high-precision clock signal, widely used in applications requiring strict time synchronization, such as power systems and communication equipment. The IRIG-B signal provided by the wireless private network card is a high-precision hardware clock that can provide a precise time reference for the system. NTP is a commonly used Internet Protocol used for network device time synchronization. Obtaining NTP signals through the network can provide a standardized clock reference for the system. Compared to IRIG-B, NTP has relatively lower precision, but it can still serve as an alternative clock source when IRIG-B cannot be used.

[0051] When the Elec-Hong main control card detects that both the IRIG-B signal provided by the wireless private network card and the NTP signal provided by the Layer 2 switching card are available, the system will preferentially select the IRIG-B signal as the master clock source. This is because the IRIG-B signal has higher time accuracy, making it suitable for power IoT systems with high clock synchronization requirements. Once the IRIG-B signal is selected as the master clock source, the Elec-Hong main control card will synchronize the clocks of all devices in the system to this clock source, ensuring that all subsystem boards (such as sensors, monitoring equipment, etc.) maintain a consistent time base. The Elec-Hong main control card will control the clocks of each board through an internal clock management mechanism (such as a clock arbitration module) to synchronize them with the IRIG-B clock source. This precise clock synchronization ensures that data acquisition and processing by all devices in the system are based on the same time standard, avoiding data conflicts or processing errors caused by time asynchrony.

[0052] When the IRIG-B signal is unavailable, the Elec-Tech main control card automatically detects the NTP signal and switches it to the master clock source. This switching process is automatic and requires no manual intervention, ensuring stable system operation even when the clock source is unavailable. Although NTP's accuracy is lower than IRIG-B, it still provides sufficient clock synchronization in the absence of the IRIG-B signal, ensuring clock consistency within the system. After switching to the NTP signal, the Elec-Tech main control card continues to synchronize the clocks of all devices, but the time accuracy of the NTP clock source may be slightly lower compared to the IRIG-B clock source. The system can still operate normally, but for applications requiring high-precision data, additional calibration or adjustment may be necessary.

[0053] In summary, the clock synchronization management method based on the Dianhong system ensures high-precision clock synchronization in the power Internet of Things (IoT) system by dynamically discovering and switching clock sources. When the IRIG-B signal is available, it prioritizes locking onto the master clock source to ensure high-precision time synchronization. When the IRIG-B signal is unavailable, the system automatically switches to the NTP signal to continue operation, thereby guaranteeing system stability and continuity. This method improves system reliability and fault tolerance, ensuring clock consistency of devices under various network and hardware environments.

[0054] Example 4 An asset management method based on the Dianhong system, applied to the device described in claim 1, the method comprising: Perform remote whitelist authentication on newly inserted heterogeneous subsystem cards; if authentication fails, perform remote power-down isolation. Local near-field read / write operations are performed using the NFC chip on the Elec-Tech main control card to obtain device asset information; Summarize the asset status of each card and synchronize it to the remote network management center.

[0055] To ensure system security, all inserted heterogeneous subsystem cards (DSCs) require remote whitelist authentication. Whitelist authentication is a security verification mechanism; only authorized devices—those whose unique identifiers, model numbers, serial numbers, and other information are stored in the whitelist—can communicate normally with the system. If the inserted DSC's identity information matches the whitelist, authentication is successful, and the card functions normally. Whenever a new heterogeneous DSC is inserted, the Elec-Tech main control card compares the new card's identity information with the preset whitelist via a remote authentication protocol. The whitelist is stored in a remote network management center, and the main control card initiates an authentication request to the network management center via the network to confirm the device's legitimacy. If authentication fails—meaning the DSC is not in the whitelist, potentially indicating an unauthorized or illegal device—the system triggers a remote power-off isolation measure. In this case, the Elec-Tech main control card issues a power-off command to the card, ensuring that unauthorized devices cannot access the system, thereby preventing potential security risks or malfunctions.

[0056] The Elec-Tech main control card integrates an NFC (Near Field Communication) chip for locally reading device asset information. NFC technology allows devices to exchange data via short-range wireless communication. The NFC chip can store and read information such as the device's unique identifier, model, production date, and maintenance records. Through the NFC chip on the Elec-Tech main control card, the system can read and write the device's asset information locally (i.e., in direct proximity to the device). This function enables maintenance personnel to quickly and contactlessly obtain detailed device information, simplifying equipment maintenance and management.

[0057] The Elec-Tech main control card periodically collects asset status data from various subsystem cards. This data may include equipment operating status, power consumption, temperature, runtime, and fault records. The Elec-Tech main control card communicates with each subsystem card through its built-in management system to collect and organize equipment asset information. This information, including equipment operating status, power consumption, temperature, runtime, and fault records, aims to provide comprehensive asset monitoring for all equipment.

[0058] The asset management method based on the Dianhong system provides an efficient and secure asset management solution for power IoT devices through remote whitelist authentication, local near-field reading of NFC chips, and remote asset synchronization. Through real-time monitoring, rapid identification, and centralized management, maintenance personnel can efficiently manage and maintain equipment, improving the automation and intelligence level of equipment management.

[0059] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A power Internet of Things edge intelligent gateway device based on the Dianhong system, characterized in that, include: A chassis for housing and securing various subsystem boards, the chassis providing adaptable card slots and enabling detachable connections through a connection mechanism between the card slots and the various boards; A high-performance backplane, located inside the chassis, provides a PCIe data bus and a dedicated rack management bus to enable electrical and data connections between the various boards. The Elec-Tech main control card includes an MCU module and a Layer 3 switching processing module. The MCU module is used to detect, identify, manage, and securely control the card slots, and monitor the alarms and status of each subsystem card. The Layer 3 switching processing module is used to realize routing, data transmission, IP distribution, and protocol interoperability between the connected subsystem cards. The Layer 2 switching card has an embedded dual-homing switching control module and an NTP client module, which are used to control data traffic forwarding and link switching. A heterogeneous subsystem card is used to support multi-protocol conversion and data communication in a power Internet of Things (IoT) environment.

2. The power IoT edge intelligent gateway device based on the Dianhong system according to claim 1, characterized in that, The main control card of the Elec-Tech is also equipped with an NFC Tag chip, which is used to store device asset information and support local near-field authentication and reading.

3. The power IoT edge intelligent gateway device based on the Dianhong system according to claim 1, characterized in that, The heterogeneous subsystem card includes at least a carrier relay card, a wireless private network card, and a wireless multifunction card.

4. The power Internet of Things edge intelligent gateway device based on the Dianhong system according to claim 3, characterized in that, The chassis is made of metal or high-strength plastic and has impact resistance and electromagnetic shielding functions. The electrical performance indicators of the device include: insulation resistance ≥5MΩ, dielectric strength 0.5kV, impulse voltage 2.0kV, electrostatic discharge immunity 8KV for contact discharge, and surge immunity 4KV for line to ground.

5. The power IoT edge intelligent gateway device based on the Dianhong system according to claim 1, characterized in that, The Layer 2 switching card is a northbound access unit. The Layer 2 switching card communicates with the Elec-Tech main control card through a private protocol and performs traffic forwarding and switching control.

6. The power IoT edge intelligent gateway device based on the Dianhong system according to claim 1, characterized in that, The hardware of the Elec-Tech main control card is based on an RK3568 quad-core ARM processor and a Layer 2 switching chip that supports VLANs.

7. The power IoT edge intelligent gateway device based on the Dianhong system according to claim 1, characterized in that, The Elec-Tech main control card runs the Elec-Tech operating system and supports the deployment of power Internet of Things applications through Docker containers.

8. A smart dual-homing switching method based on the Dianhong system, applied in the device of claim 1, the method comprising: The Layer 2 switching card detects the physical link status of its northbound port; Each slave unit managed by a heterogeneous subsystem card reports the logical and service status of the link to the Elec-Tech main control card; The Elec-Tech main control card integrates the logical state and service state, and makes a soft decision based on the preset private network priority principle; After the judgment, the Elec-Tech main control card sends a switching command to the Layer 2 switching card, and the Layer 2 switching card performs a switch of the data traffic forwarding path according to the switching command.

9. A clock synchronization management method based on the Dianhong system, applied in the device of claim 1, the method comprising: The main control card of the Elec-Hong dynamically discovers the IRIG-B signal provided by the wireless private network card and the NTP signal provided by the Layer 2 switching card. When both are available, control the entire system to lock the IRIG-B signal as the master clock source; When the IRIG-B signal is unavailable or the wireless private network card is absent, the system automatically switches to the NTP signal as the system clock reference.

10. An asset management method based on the Dianhong system, applied in the device of claim 1, the method comprising: Perform remote whitelist authentication on newly inserted heterogeneous subsystem cards; if authentication fails, perform remote power-down isolation. Local near-field read / write operations are performed using the NFC chip on the Elec-Tech main control card to obtain device asset information; Summarize the asset status of each card and synchronize it to the remote network management center.

Images