470 results about "Protocol processing" patented technology

The invention discloses a semiconductor device communication system and method based on an SECS / GEM protocol. The system comprises an SECS / GEM protocol processing module, a PLC communication module and a service logic processing module. The protocol processing module realizes message coding and decoding and state management through an HSMS / GEM layered architecture, and supports equipment capability dynamic negotiation; the PLC communication module adopts a factory mode to adapt to a multi-manufacturer controller to realize online mapping of a physical register and a logic address; and the business logic module dynamically loads the command processor based on a reflection mechanism, and realizes multi-condition event triggering through a rule engine. The method comprises the processes of system initialization, message priority scheduling, composite alarm processing and exception recovery, and the equipment integration efficiency and the communication reliability are remarkably improved. The method solves the problems of rigid parameter mapping, single event processing and poor equipment compatibility of a traditional scheme, and can be widely applied to equipment automation control of scenes such as semiconductor wafer manufacturing and packaging testing.

A system and methods for integrated data processing and protocol adaptation using dyadic distribution-based compression. The system transforms input data into a dyadic distribution, enabling efficient compression through either variational autoencoders or Huffman encoding. A novel protocol appendix generator creates transformation rules for adapting the compressed data to various network protocols. The system interleaves transformation information with the compressed data, enhancing security and ensuring comprehensive data transmission. An enhanced codeword decoder, employing a hybrid neural network architecture, decodes the data and adapts it to target protocols. The system features a protocol handler using meta-learning techniques for adapting to unfamiliar protocols. Continuous learning mechanisms optimize performance over time. This integrated approach offers significant advantages in data efficiency, security, and protocol flexibility, making it particularly suitable for complex, heterogeneous data environments such as IoT networks, cloud computing, and big data analytics.

A system and methods for integrated data processing and protocol adaptation using dyadic distribution-based compression. The system transforms input data into a dyadic distribution, enabling efficient compression through either variational autoencoders or Huffman encoding. A novel protocol appendix generator creates transformation rules for adapting the compressed data to various network protocols. The system interleaves transformation information with the compressed data, enhancing security and ensuring comprehensive data transmission. An enhanced codeword decoder, employing a hybrid neural network architecture, decodes the data and adapts it to target protocols. The system features a protocol handler using meta-learning techniques for adapting to unfamiliar protocols. Continuous learning mechanisms optimize performance over time. This integrated approach offers significant advantages in data efficiency, security, and protocol flexibility, making it particularly suitable for complex, heterogeneous data environments such as IoT networks, cloud computing, and big data analytics.

The invention relates to the technical field of computer hardware and network communication, in particular to a high-speed I / O (input / output) virtualization server based on an FPGA (field programmable gate array) and a remote forwarding method.The high-speed I / O virtualization server comprises an FPGA chip, a network processing unit, an I / O protocol processing unit, a protocol conversion and scheduling unit, a time sequence and transaction management unit and a data buffering and flow control unit are integrated in the FPGA chip; the optical fiber Ethernet interface module comprises a physical layer interface and an MAC layer processing and network configuration interface; the local I / O interface module comprises a USB interface circuit, a serial port interface circuit, a PCIe interface circuit and an interface expansion connector; the power supply and monitoring module comprises a multi-path power supply management system, a state monitoring and diagnosis system and an LED indication system; according to the self-adaptive Baud rate detection circuit, the Baud rate can be accurately locked under the condition that data with less than two characters is received, the number of data bits, the type of a check bit and the length of a stop bit are automatically identified, and compared with a traditional microcontroller scheme, the self-adaptive Baud rate detection circuit has higher precision and higher detection speed.

The invention relates to a communication device compatible with a hybrid network of Ethernet and FC-AE-1553, belongs to the technical field of hybrid network communication of FC-AE-1553 and Ethernet, and solves the problems of complex structure, large size and high cost of the FC-AE-1553 and Ethernet communication network in the prior art. The communication device comprises an Ethernet interface conversion module, an Ethernet data exchange module, a protocol processing module, an FC data exchange module and an FC transceiver module. The Ethernet interface conversion module receives an Ethernet data frame sent by an Ethernet node and forwards the Ethernet data frame to the Ethernet data exchange module or the protocol processing module; the FC transceiver module receives an FC-AE-1553 frame sent by an FC-AE-1553 node, and forwards the FC-AE-1553 frame to the FC data exchange module; the FC data exchange module forwards the FC-AE-1553 frame to the FC transceiver module or the protocol processing module; and the protocol processing module is used for realizing mutual conversion between an Ethernet frame and an FC-AE-1553 frame and sending the Ethernet frame and the FC-AE-1553 frame to an Ethernet node. The communication network of the Ethernet and the FC-AE-1553 is simple in structure, small in occupied volume and low in cost.

The invention discloses a direct memory access (DMA) communication device for a computing network convergence computing architecture and a working method of the DMA communication device. The DMA communication device comprises a DMA transaction processing module and a protocol conversion module; the DMA transaction processing module is used for analyzing related DMA read-write requests, realizing processing of the DMA read-write requests and receiving of response data of the DMA read requests and completing processing of interrupt requests at the same time, and the protocol conversion module is used for completing conversion of read-write requests between a DMA interface and an AXI interface and mapping of response states. The invention aims to realize efficient protocol conversion between AXI and DMA interfaces, avoid the problem of DMA read request starvation caused by resource competition and ensure the consistency of DMA data access so as to improve the performance of an accelerator in high-performance calculation and artificial intelligence application, reduce transmission delay and improve data transmission bandwidth and energy efficiency.

The invention discloses a PON-based multi-protocol communication method and device, and the method comprises the steps: distributing a corresponding internal scheduling time slot to each network protocol processing unit for data uploading to each network protocol processing unit when a data processing module detects that the network protocol processing units connected with each field bus device have to-be-uploaded service data; and when one internal scheduling time slot is used up, interrupting the uploading of the service data until the next internal scheduling time slot allocated to the internal scheduling time slot is recovered from interrupting the uploading of the data. And the PON module monitors a global scheduling time slot allocation instruction issued by the optical line terminal in real time, converts an uploaded data frame into an electric signal, transmits the electric signal to the optical module through an internal link, converts the electric signal into an optical signal through the optical module in an allocated global scheduling time slot, and uploads the optical signal to the optical line terminal through an optical distribution network. Real-time performance and orderliness of transmission of service data in multiple field bus devices in a PON network are achieved, the requirement of industrial communication for data transmission is met, and transmission resource distribution is optimized.

The invention discloses a data acquisition method and system based on multiple protocols. The method comprises the following steps: acquiring data of a sensor; protocol identification and adaptation: identifying the type of a communication protocol used by the current data, and loading or calling a corresponding adaptation protocol after successful identification; timestamp synchronization processing: performing unified timestamp correction or supplement on the obtained original data; unified packaging protocol processing: packaging the data subjected to protocol adaptation and timestamp synchronization processing according to a unified structure; data encryption and integrity verification: performing encryption and compression processing on the acquired data according to configuration or a data sensitivity level, and calculating and adding a verification code to each frame of encapsulated data; data transmission: transmitting the packaged data to a processing server or a local recording module; data storage and management; the scheme has the characteristics of improving data synchronism, supporting multi-protocol integration and simplifying data storage and management.

The invention relates to the technical field of data processing, in particular to an FPGA (Field Programmable Gate Array) and CPU (Central Processing Unit) cooperative network data processing system, which comprises a network interface module for receiving and forwarding an external data flow, and a protocol analysis module for distinguishing a service message and a protocol message based on a message header characteristic and a load mode; the service processing module executes protocol format conversion, security encryption and data extraction in the FPGA; the protocol stack interaction module transmits a protocol message to the CPU through the MAC layer communication interface; the protocol stack module activates necessary protocol services in the CPU and generates a resource allocation instruction; and the data integration module receives the service data flow and the protocol processing result, and dynamically adjusts the encryption rule. According to the invention, FPGA business data closed-loop processing and CPU protocol service physical isolation are realized, a double-processing-unit architecture supports financial signature and industrial filtering cascade operation, the MAC layer interface is additionally provided with cyclic redundancy check to guarantee transmission reliability, and equipment processing efficiency and anti-attack capability under a fusion scene are improved.

The invention discloses an SATA (Serial Advanced Technology Attachment) bus system based on an FPGA (Field Programmable Gate Array) and an implementation method thereof, and the SATA bus system comprises a hierarchical protocol processing unit which is used for realizing command analysis, data encapsulation, channel coding and signal conversion functions; the control module is used for receiving a read-write command and read-write parameters sent by the host, and then controlling the hierarchical protocol processing unit to read target data of the storage device according to the read-write command and the read-write parameters, or controlling the hierarchical protocol processing unit to write the target data into the storage device; the command and data processing module is used for caching read-write commands, read-write parameters and upper computer data in FIFO (First In First Out) in a layered manner; and the test data processing module is used for testing whether the storage equipment reads and writes the data normally to obtain a test result. According to the method, the interface design is simple and clear, the delay is low, the data reading and writing function of the storage medium can be tested without intervention of a host or a CPU, and the method can be widely applied to the technical field of serial advanced technology accessory interface control.

The invention relates to the technical field of 5G infrastructure intelligent detection, in particular to a multi-sensor fusion intelligent detection method and system for a 5G infrastructure, which realizes real-time monitoring of the appearance and environmental parameters of 5G infrastructure equipment by integrating an image sensor, a temperature and humidity sensor and a vibration sensor, establishes a data interaction protocol, and improves the detection accuracy of the 5G infrastructure equipment. Processing and analyzing the collected data, generating a joint certificate, checking and verifying the integrity and availability of the data, then carrying out fault detection and health state evaluation by using a visual fault detection model and a state variable prediction model, and carrying out intelligent decision making according to an evaluation result and a decision fusion rule base. Comprising self-diagnosis operation, fault information recording, emergency alarm sending and emergency plan triggering, collected data, fault levels and intelligent scheduling decisions are displayed in real time through a graphical interface, and a visual monitoring interface is provided for maintenance personnel. According to the invention, the operation efficiency and safety of the 5G infrastructure are improved.

The invention discloses a system and a method for encrypting high-speed audio and video data based on an FPGA (Field Programmable Gate Array). The system mainly comprises an optical module interface, an FPGA module, a DDR4 (Double Data Rate 4), a FLASH and an HDMI (High Definition Multimedia Interface) TX interface. Wherein the FPGA module internally comprises a self-designed custom protocol processing module, a cache control module, a key management module and a data encryption module; the optical module interface is used for receiving audio and video data in a user-defined format; the user-defined protocol processing module analyzes effective audio and video data according to a user-defined message format, and the data is cached in a DDR4 (Double Data Rate 4) by a cache module; the key management module generates a key used for data encryption through an SM2 algorithm; the data encryption module realizes hardware encryption through the SM4 algorithm module; and the HDMI output interface module converts the encrypted audio and video data into an HDMI format and outputs the converted audio and video data at an HDMI TX interface. According to the high-speed data encryption method based on FPGA hardware logic, an optical module interface and an HDMI interface are combined, and an efficient and safe audio and video data encryption solution is provided.

The invention relates to the technical field of intelligent interface generation, in particular to an interactive interface generation method and system, computer equipment and a medium. The method comprises the following steps: receiving a multi-protocol interaction request, and extracting natural language context information carried in the multi-protocol interaction request through a protocol processing layer; according to the natural language context information, executing cue word processing to generate interface generation trigger judgment; when the interface generation trigger judgment indicates that an interface needs to be generated, generating an interface mode definition instance based on the natural language context information and a preset cue word template; and according to the interface mode definition instance, generating an interactive interface through a rendering output device. In this way, the technical problem that in an existing interface generation technology based on natural languages, it is difficult to collaboratively optimize the interface dynamic adaptation capacity and the system expansibility is solved, and the intelligent level, cross-platform compatibility and service response agility of interface generation are improved.

Large-scale compute environments for Artificial Intelligence (AI) and High-Performance Computing (HPC) may utilize memory fabric infrastructures to achieve higher workload performance compared to conventional networking-only infrastructures. However, the role of memory fabrics extends beyond high-end use cases into general compute scenarios in public cloud, private cloud, and hybrid enterprise environments, where Memory-as-a-Service (Memory-aaS) augments and complements the portfolio of services provided to tenants in the datacenter. Embodiments herein disclose a streamlined CXL memory fabric utilizing a Resource Provisioning Unit (RPU), enabling lightweight, scalable provisioning of memory to CPUs, GPUs, and accelerators via CXL.io, CXL.mem, and CXL.cache. These embodiments support translation between asymmetric and symmetric memory transactions and operate in both switch-enabled CXL environments, such as CXL 2.0 and CXL 3.x, and non-switched CXL environments, such as CXL 1.1. The embodiments may further enable multi-tier memory pools and advanced protocol processing in switches, leveraging existing rack-level and pod-level topologies.

The PIO communication device comprises a protocol conversion module and a PIO transaction processing module, the protocol conversion module and the PIO transaction processing module are connected with each other, the protocol conversion module is connected with a computing component connected to a network-on-chip NoC through an AXI interface, and when the computing component initiates a PIO read-write request, the PIO transaction processing module sends the PIO read-write request to the computing component; the protocol conversion module performs conversion of read-write requests between an AXI protocol and a PIO protocol and mapping of response states, and the PIO transaction processing module initiates register access and descriptor writing operation to the network protocol processing component by analyzing the converted PIO read-write requests and receives register read response data returned by the network protocol processing component. According to the invention, a decoupling design of an address channel, a data channel and a response channel is adopted, conversion of a PIO read-write transaction between an AXI interface and a network protocol interface is completed, and high-bandwidth and low-delay non-blocking PIO data transmission and processing are realized.

In response to intercepting (106), by a customer-premises equipment, CPE, a connection request from a connected device to an external encrypted domain name system, DNS, server, blocking (108), by the CPE, the connection request to cause the connected device to fall back to a use of an unencrypted DNS. And, in response to intercepting (110), by the CPE, an unencrypted DNS query from the connected device, performing (124), by the CPE, a cybersecurity operation related to the unencrypted DNS query.

The invention relates to the technical field of encoder communication interface circuits, in particular to a multi-protocol encoder communication interface circuit based on hardware configuration, which comprises a core control and protocol processing module, a hardware configuration and mode recognition module, an RS-485 differential driving and receiving module and an interface protection circuit module. In the invention, the problems that the hardware cost is high, the PCB layout is complicated, the overall size of the system is increased, the types of connectors are diversified and the wiring difficulty is increased due to the fact that an independent physical interface circuit needs to be independently designed for each protocol such as BISS and Tamagawa or a special integrated chip with a solidified factory function is adopted in the existing scheme are thoroughly solved; and meanwhile, the problems that chips need to be replaced or hardware needs to be redesigned and the configuration flexibility is poor in the protocol updating of an existing scheme are solved, the time sequence conflict risk existing in software dynamic switching protocols is avoided, and the defects that a traditional circuit is poor in surge resistance, signal crosstalk is caused and debugging and maintenance are complex are overcome.

The invention relates to the technical field of communication, in particular to a three-network convergence communication terminal system based on core size level heterogeneous integration and an implementation method, and the system comprises a radio frequency transceiving core particle, a baseband processing core particle, a storage core particle, a control scheduling core particle and a power management core particle. According to the invention, systematic linkage optimization of cross-domain parameters is realized through a core size level heterogeneous integration and state space cooperation mechanism, and real-time channel state information directly drives a scheduling algorithm to solve in a global state space. According to the method, the problems of low energy efficiency utilization rate, lagged resource scheduling response, low power consumption and the like of a terminal in a multi-network concurrency and switching scene due to the fact that a multi-network communication module is discrete and a cross-hardware-level dynamic coordination mechanism is lacked are effectively solved, and the service life of the terminal in a multi-network concurrency and switching scene is prolonged. And therefore, the problems of limited terminal volume, high power consumption and poor service continuity can be solved.

The invention provides a PLC integrated digital twinning control enhancement system and method, and relates to the technical field of cloud PLC control, a PLC integrated development environment module comprises an instruction set generation unit, a digital twinning function plug-in library and a PLC compiler unit which are connected in sequence, the instruction set generation unit comprises an FB library, a PLC control instruction generation unit, a control instruction mapping form and a server intermediate variable set which are connected in sequence; the PLC operating environment module comprises a protocol processing unit, a PLC main control logic unit and a server driving program which are connected in sequence, the PLC main control logic unit comprises a DT decision triggering subunit, and the server driving program comprises a strategy control subprogram and a virtual control instruction sending subprogram; the DT decision triggering subunit is connected with the server driving program; and the PLC virtual space module comprises a client driving unit, a virtual IO management unit and a data analysis unit which are connected with one another.

The invention discloses an ultra-low power consumption LoRa backscatter communication system based on an FPGA (Field Programmable Gate Array) and a design method thereof. Comprising a LoRa transmitter, a LoRa receiver, an upper computer and a LoRa backscattering terminal. The LoRa transmitter transmits a sine wave signal with a certain frequency. And the LoRa receiver receives and demodulates the backscattering signal, and then sends the demodulated signal to the upper computer. And the upper computer receives the demodulated signal, completes audio decompression and plays the audio. According to the backscattering terminal, an FPGA serves as a master control, and the FPGA completes the functions of audio compression, LoRa physical layer protocol processing and a LoRa backscattering algorithm. According to the invention, a LoRa backscattering algorithm based on table look-up is designed, then a multi-clock design method and a clock gating technology are provided to optimize system power consumption and communication performance, and outdoor testing is carried out on a scattering terminal. According to the invention, the performance advantages of the FPGA are exerted, and the ultra-low power consumption of the terminal is maintained.

The invention provides an optimization method for fusing network scene edge data transmission and calculation task unloading. Through the steps of protocol identification, local protocol conversion, cloud-assisted unknown protocol processing, data packet tunnel packaging, data packet analysis and storage, state transition processing and the like, various communication protocol data packets are effectively processed, and the data transmission efficiency is optimized. In addition, according to the technical scheme, by establishing a comprehensive model and adopting an improved depth deterministic strategy gradient algorithm, task unloading and migration decisions are dynamically evaluated and optimized, delay is reduced, and the processing speed and quality are improved. The invention provides an efficient, flexible and multi-protocol compatible optimization method for overcoming the defects of an existing edge computing solution in the aspect of collaborative optimization of data transmission and task processing, and the network performance and the user experience are remarkably improved.

The invention belongs to the technical field of electric energy meters, and particularly relates to an intelligent electric meter and an intelligent electric meter multi-protocol processing method. The method comprises the following steps: extracting a data packet received by an electric energy meter according to each communication protocol frame format to obtain a frame message under each communication protocol; each frame of message under each extracted communication protocol is sent to a corresponding data routing module through a corresponding communication protocol transmission link, and the data routing module is used for interacting with a communication module and a service module and comprises a data format conversion unit; the data routing module corresponding to each communication protocol determines the name of a data item according to the mapping relation corresponding to the protocol message, and the data format conversion unit performs format conversion on the data content corresponding to the protocol message data item received by the electric energy meter or the data content corresponding to the data item returned by the service module; data processing of each frame of message under each protocol is completed, and the problem that the issued protocol message is lost under a multi-frame concurrent scene is solved.

The invention discloses a construction method for dynamically reconstructing a multi-modal edge computing hardware architecture and a cross-industry application method, and relates to the field of edge computing hardware architectures. A five-level heterogeneous architecture is adopted to construct a field self-adaptive dynamic reconstruction calculation unit, and an equipment abstraction layer is constructed to realize module hot plugging and calculation power distribution; a multi-protocol ubiquitous interconnection interface engine is established, a hardware-level analysis architecture is integrated, and multi-protocol analysis and rapid switching are supported; an environment self-adaptive energy efficiency regulation and control system is deployed, and wide-temperature operation is realized by adopting a bionic composite heat dissipation design; an edge-region-cloud three-layer elastic scheduling network is constructed, cross-domain computing power arrangement is realized through federal learning, and the method is adaptive to multi-industry scenes. According to the method, the hardware reuse rate and the wide-temperature environment adaptability are improved, the multi-protocol processing delay is reduced, the computing power scheduling efficiency is optimized, the limitation of traditional equipment is broken through, and the efficient and stable operation requirements of cross-industry scenes such as electric power and medical treatment are met.

The embodiment of the invention discloses an electric energy meter protocol de-framing method and device, electronic equipment and a storage medium, and relates to the technical field of communication protocol processing, and the method comprises the steps: obtaining a service type and an object identifier according to APDU analysis of a state grid 698 protocol, obtaining object configuration information through searching by a dichotomy method, and obtaining an object identifier; obtaining member number limitation, operation authority and multiple sub-member information of the object, reading corresponding sub-member data information, if the service type is a read object, framing according to the data type and length of the multiple sub-member data information, and if the service type is a write object, framing according to the data type and length of the multiple sub-member data information; if yes, deframing is carried out according to the data type and length of the data information of the multiple sub-members, and the data information is written into corresponding data source positions and stored. According to the method, the problems of large code volume, high maintenance difficulty, low efficiency and resource waste caused by repeatedly compiling the framing and de-framing functions in the prior art are solved by designing the universal framing and de-framing functions for the data types and combining the configuration parameters and the linked list lookup technology.

The invention relates to the technical field of electric digital data processing, and discloses an intelligent campus network security protection system. A network data acquisition module of the system continuously monitors data transmission flow of a smart campus network environment to obtain an original data packet; the chaotic encryption engine encrypts an original data packet by using a key stream based on dynamic chaotic mapping, wherein the key stream is generated by multi-chaotic system switching and a random parameter distribution mechanism; the security protocol processing module converts the encrypted data packet into a format conforming to a network security protocol standard and transmits the encrypted data packet; the data decryption unit decrypts the received encrypted data packet; the security threat analysis module identifies and estimates potential network attack behaviors according to the decrypted plaintext data; and the protection strategy controller generates and executes a network security protection instruction according to the threat analysis result. The system can effectively protect the network security of the smart campus, resist various network attacks, and ensure the security of data transmission and storage.

The invention discloses a CT scanning bed control method and system based on EtherCAT motion control, and the method comprises the steps: selecting a scanning mode according to a scanning demand, and calculating a motion parameter corresponding to the scanning mode; receiving the scanning mode and the motion parameter information, and converting the scanning mode and the motion parameter information into a motion mode instruction of the scanning bed through TCP protocol processing; receiving the motion mode instruction, and converting the motion mode instruction into an EtherCAT protocol format; and receiving the motion mode instruction in the EtherCAT protocol format, and controlling the scanning bed to act through the servo driver based on the motion mode instruction in the EtherCAT protocol format so as to complete a scanning task. EtherCAT full duplex communication is adopted, so that data transmission is more timely and accurate, and high-speed and stable information interaction is realized; a sine line planning model is introduced, the motion trail of the scanning bed can be accurately planned according to different scanning modes, motion errors and jitter are reduced, and the CT scanning precision is improved.

The invention is suitable for the technical field of Ethernet data transmission, and provides a system and a method for enhancing the reliability of Ethernet non-connection protocol data transmission. The system comprises an Ethernet data receiving module, a receiving RAM cache module, a protocol judgment module, an ARP table cache updating module, a UDP application layer protocol processing module, a UDP protocol response module, an ARP, ICMP and UDP data FIFO cache module, a protocol arbitration reply module, a sending RAM cache module and an Ethernet data sending module. On the basis of CRC data verification, the UDP response module is added, certain data is replied when the non-connection protocol data of the sending end is received, the sending end is informed of whether the data packet is successfully received or not, the sending end can retransmit the lost data packet according to the response message, the stability of data transmission is improved, and the user experience is improved. And the reliability of Ethernet non-connection protocol data transmission can be greatly enhanced.

The invention provides a master station type hybrid private protocol networking method and compatible ring network equipment, and the method comprises the steps: enabling the compatible ring network equipment to access a private ring network to be networked as a slave station identity, and configuring protocol processing templates constructed according to different redundant ring protocols in the compatible ring network equipment; receiving a message of a private ring network through the compatible ring network equipment, and identifying a redundant ring protocol type of the message according to the protocol processing template; packaging the message into a ring protocol message in the private ring network by using the protocol processing template according to the identified redundant ring protocol type; and transmitting the packaged ring protocol message to the private ring network so as to realize networking of compatible ring network equipment in the private ring network. According to the invention, the compatible ring network equipment compatible with various private redundant ring protocols is provided, and the compatible ring network equipment is accessed to the private ring network to be networked as the slave station identity, so that different redundant ring protocols are compatible, and networking in different private ring networks is realized.

The invention discloses an access request processing method under centralized storage and electronic equipment, and relates to the technical field of centralized storage, and the method comprises the following steps: setting a virtual file system in a node, and carrying out cache mirror image synchronization among the nodes by utilizing the virtual file system. After any node receives an access request, the node firstly determines whether the access request is a read request or a write-in request, and then processes the read request or the write-in request by using the cache mirror image. The problems that when multiple nodes of a local file system are used for providing read-write services to the outside, data are damaged easily due to the fact that a memory structure has no consistency protection, and protocol processing is conducted depending on one node can be solved. According to the method, the virtual file system is introduced into the nodes, so that the nodes are mounted on the same volume, cache synchronization between the nodes is performed by using the virtual file system, and unification of cache mirror images between the nodes is realized. Through the cache mirror image between the nodes, the capability of providing services to the outside by the multiple nodes is realized.

The invention discloses a protocol message tamper-proofing method and system based on symmetric encryption and a medium, and relates to the technical field of industrial automation Ethernet time synchronization. According to the method, mirror image monitoring is carried out on the message receiving and sending process in the protocol processing process of time synchronization equipment, a protocol message is obtained and analyzed, and the protocol message tamper-proofing effect is achieved; a message abstract and encrypted verification data thereof are generated at a sending end, and a corresponding abstract is obtained through decryption at a receiving end; consistency comparison is carried out on the sending side abstract and the receiving side abstract based on the time window, and a tamper-proof consistency coefficient is calculated to judge the integrity of the protocol message; on the basis that the integrity is qualified, performing difference analysis on an encryption verification result, and calculating an encryption credibility coefficient to evaluate the credibility state of the symmetric encryption link; and further performing coupling calculation to obtain a time synchronization security coupling coefficient, comprehensively evaluating the influence of tamper-proofing and symmetric encryption on the time synchronization operation security, and implementing a security regulation and control strategy according to the influence, thereby improving the security and stability of the time synchronization system.