1929 results about "Ethernet" patented technology

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.

A network interface module for coupling a host device to a switched network as a network node is described. The network interface module comprises a single half-duplex port for communicatively coupling to a shared bus of the switched network, at least one frame queue sized to store one multicast read frame received via the shared bus, and logic circuitry. The logic circuitry is configured to decode a read command for the interface module included in a payload of the multicast read frame that includes multiple read commands for other network nodes of the switched network, and transmit a response frame including read data on the shared bus when detecting the shared bus is available for transmitting.

The invention discloses a rapid communication and redundancy control method for an AGC substation of a distributed photovoltaic power station, and the method comprises the following steps: S1, receiving an automatic power generation control instruction from a power grid dispatching system in parallel and uploading real-time operation data of the photovoltaic power station through two independent communication links; according to the invention, the reliability and robustness of the system are fundamentally improved; by constructing a physical basis of parallel work of two paths of independent communication links and combining real-time state monitoring and a millisecond-level rapid switching mechanism, the method thoroughly changes the fragile situation that the whole substation is disconnected and the function is paralyzed due to a single communication channel or a power supply fault of a traditional system; when the main optical fiber link is interrupted due to construction damage or equipment failure, the system can automatically and seamlessly switch all communication services to the standby Ethernet or wireless link without depending on manual intervention, and it is ensured that the transmission path of the scheduling control instruction is always smooth.

The application provides a test method for intelligent auxiliary driving test, constructs a test problem description grabbing model, directly collects signals uploaded by an intelligent vehicle in real time through a vehicle-mounted Ethernet and a CAN FD direct connection interface without using other data interfaces, triggers a test problem description reporting process once abnormal signals are monitored, and ensures that the vehicle meets safety requirements of real vehicle road test.

The invention provides an electric energy quality on-line monitoring device and a cloud platform cooperation system, and relates to the technical field of electric energy quality management, and the device comprises a signal collection unit which obtains three-phase voltage and current signals in parallel through a Rogowski coil and a capacitive voltage divider; the event detection unit is used for synchronously executing harmonic spectrum analysis and transient event capture by adopting a parallel processing architecture realized by an FPGA (Field Programmable Gate Array); the edge processing unit is connected with the event detection unit, and is configured to encode the transient event features into a Gramer angle field image and compress steady state data into feature vectors; the multimode communication unit comprises a 4G / 5G wireless module and an optical fiber Ethernet interface; and the strategy execution interface outputs a treatment instruction to the compensation device through the D / A converter and the current loop. Through collaborative innovation of the device and the cloud platform, the power quality monitoring and treatment efficiency is remarkably improved.

The invention discloses a spaceborne high-performance calculation module and system based on a SpaceVPX standard and a control method. The calculation module comprises a board card following the SpaceVPX standard, and a core processor module, a storage module, a communication interface module, a monitoring module, a power management module and a VPX connector which are integrated on the board card. The core processor module adopts an anti-radiation reinforced high-performance processor; the storage module comprises a DDR4, a NORFLASH and an SSD (Solid State Disk); the communication interface module comprises an Ethernet, an SRIO high-speed interface and a debugging interface; the monitoring module collects state information through an I2C bus; the power management module provides stable power supply; the VPX connector leads out an SRIO bus, an ETH bus and an I2C bus, and star interconnection with other units on a satellite is achieved. Through standardized and modular design, the problems that an existing satellite-borne computing architecture is fixed, poor in expansibility and insufficient in reliability are solved, and high-performance, high-reliability and flexibly-combined satellite-borne data processing capacity is achieved.

The invention discloses a dual-channel adaptive network stability testing method and system, and belongs to the technical field of computer network testing. The system adopts a dual-channel asynchronous communication architecture in which a control channel and a data channel are physically separated, instructions and state information are transmitted through an independent TCP control channel, and high-speed test data streams are transmitted through a UDP or TCP data channel. The method comprises the following steps: dynamically and adaptively adjusting a timeout parameter based on real-time network delay detection; nanosecond constant interval packet sending control is realized by using a high-precision monotonic clock source and busy waiting compensation mechanism; a packet loss detection, positioning and ACK confirmation mechanism based on the serial number is realized in an application layer; and real-time statistical display and idle detection automatic termination are realized through multi-thread parallel processing. According to the invention, the precision, the stability and the adaptive capability of network testing are remarkably improved, and the method is suitable for long-time stability testing in various scenes such as a high-speed Ethernet, a satellite link, an industrial Internet of Things gateway and the like.

A method of operating a network device is provided. The method can include detecting a first host device that is communicatively coupled to a first interface or port of the network device, identifying a first host profile identifier corresponding to a first class of devices to which the first host device belongs, and advertising, to one or more additional network devices, network reachability or routing information for the first host device. The network reachability information can include at least the first host profile identifier associated with the first host device and a first sequence number. The first sequence number may indicate a number of mobility or roaming events taken by the first host device.

The invention relates to the technical field of intelligent education and Internet of Things fusion, in particular to a multi-modal interaction control method and system of a multifunctional teaching-assistant robot and the robot. According to the system, a tablet AI processor runs an Android system as a core, a display module, a man-machine interaction module, an audio input module, an audio output module, an image acquisition module, a temperature and humidity sensor module, a WIFI or Bluetooth module, an Ethernet module and an Internet of Things module are connected, and the Internet of Things module supports RS485 wired access and Zigbee wireless access at the same time; the tablet AI processor executes voice interaction, video call, face recognition, environment monitoring, network interaction and equipment linkage, and provides a face recognition alignment and depth feature matching algorithm and an annular microphone array beam forming and sound source direction estimation algorithm, so that multi-modal interaction and multi-equipment linkage in a teaching scene are realized. The convenience and the safety are improved; and the equipment access cost is reduced.

The invention discloses a CXL protocol extension method, device and system based on the Ethernet. The method comprises the following steps of: carrying out long-distance expansion interconnection on a CXL (Compute Express Link) protocol by using Ethernet as a physical transmission medium; by bearing the CXL protocol on the Ethernet, the range of memory pooling is expanded from the rack level to the whole data center (kilometer level), and the potential of the CXL technology is thoroughly released; through protocol translation, label management and flow control realized by pure hardware, an operating system kernel and a software protocol stack are bypassed, so that the end-to-end memory access delay is far lower than that of any software-based network storage scheme, and a reliable request-response tracking and timeout retransmission mechanism is realized through a hardware label manager. By distinguishing the control flow and the data flow, differentiated QoS guarantee is provided for different types of memory flows, and the stability of the system under high load is ensured.

The described techniques address issues related to compatibility and cost-effectiveness of in-vehicle networks. The described techniques may utilize security Ethernet-based protocols, for example, without the need to exchange separate key agreement messages and, consequently, meet the stringent starting time requirements for real-time control systems. Additionally, a membership tracking solution may be implemented in which each node within a membership group may request, or “challenge” other nodes with the same group to verify their online status, and this online status may be maintained over time. Finally, a transmission queue management process is described that deletes queued messages only when it is determined that every intended recipient node received the message, thereby providing atomicity. Retained queued messages may then be re-transmitted in accordance with a transmission schedule.

The invention discloses a predictive vehicle control system and method for multi-modal consciousness recognition and electronic equipment, and relates to the field of remote monitoring, and the system comprises a multi-modal sensing module, an intention prediction module, a cross-domain pre-control module and a false trigger suppression module. The multi-mode sensing module is used for collecting three-mode data of sight, gestures and voice and dynamically distributing weights based on environmental parameters; the intention prediction module is used for performing time-space synchronization verification on the three-mode data and calculating comprehensive confidence in a grading manner; the cross-domain pre-control module outputs pre-control instructions to a cabin domain, a vehicle body domain and a power domain based on the effective intention; the false triggering suppression module is used for dynamically adjusting a confidence coefficient threshold value based on a driving scene and has a failure backspacing learning function; wherein each module performs data interaction based on a vehicle-mounted Ethernet / CAN bus.

The invention discloses a dual-hangar collaborative operation system for high-frequency inspection. The dual-hangar collaborative operation system comprises a remote server and two hangar subsystems which are adjacently deployed in an electric power inspection base station, the remote server communicates with the main control modules of the two hangar subsystems through the Ethernet and is used for issuing operation instructions and receiving motor state data and meteorological data. And the main control modules of the two hangar subsystems are in communication connection and are used for sharing meteorological data and operation state data and executing collaborative scheduling logic to realize parallel processing of take-off preparation and landing storage of the unmanned aerial vehicle. Depending on a double-hangar collaborative scheduling strategy, parallel processing of takeoff preparation and landing storage is achieved in a daily scene, while a first hangar executes takeoff preparation (cabin door opening, platform ascending and pressing rod loosening), a second hangar synchronously completes landing storage (unmanned aerial vehicle centering, pressing rod fixing and cabin door closing), and the unmanned aerial vehicle is taken off. And the total time consumption of single operation is shortened to be within 120s from 200s of a single-machine library.

According to the verification method based on Ethernet end-to-end communication, the storage medium and the electronic equipment disclosed by the invention, the initial configuration operation is firstly executed, the communication connection between the test end and the tested equipment is established, then the verification request message is sent to the tested equipment, and the test report is generated based on the response message returned by the tested equipment. The end-to-end communication verification method and system can achieve systematic verification of end-to-end communication, can simulate an actual operation scene, automatically detect and record communication abnormity, counter logic errors, boundary values and CRC verification errors and generate a test report in a high-load, high-concurrency and multi-service-flow parallel complex network environment, improves the automation degree and efficiency of the test, and improves the test efficiency. Dependence on artificial experience is reduced, and stability and reliability of an end-to-end communication mechanism under extreme working conditions can be quantified.

Devices, systems, methods, and processes for fabric congestion management are described herein. At each ingress switch, virtual output (“VO”) queues are created for egress ports based on identifiers, state indicators, and encapsulation values of the egress ports received via an Ethernet Virtual Private Network (“EVPN”) control plane. When a data packet is received at the ingress switch, an egress port for the data packet is determined, an identifier and an encapsulation value of the egress port are added to the data packet, and the data packet is stored in a corresponding VO queue. The data packet remains at the ingress switch until an egress switch is available. At the egress switch, one or more tags are added in the data packet based on the encapsulation value, whereas the destination egress port is identified based on the identifier. Thus, a quick egress through the egress switch is achieved.

Systems, apparatuses, and methods are described for wireless communications. A base station and wireless device may communicate capability information associated with a wireless device. The capability information may include information indicating support for an Ethernet type packet data unit session or header parameter compression. An Ethernet type packet data unit session may be instantiated based on the capability information.

The utility model relates to the technical field of power equipment monitoring and control, and discloses a synchronous phase modifier integrated monitoring device, which comprises a phase modifier, and a data acquisition device, a data fusion device, an intelligent analysis device, a fault diagnosis device and a linkage control device which are connected with the phase modifier, the phase modifier is connected with the data acquisition device through a shielding signal cable and is used for acquiring operation data; the data acquisition device is connected with the data fusion device through an industrial bus and is used for realizing real-time uploading of acquired data; the data fusion device is respectively connected with the intelligent analysis device and the fault diagnosis device through the Ethernet, and is used for converting the dispersedly collected parameters into standardized fusion data; the intelligent analysis device and the fault diagnosis device are connected with the linkage control device through wires and used for outputting early warning information and fault handling instructions. The device manages data in a unified manner, replaces manual summarization, improves monitoring efficiency, prejudges hidden dangers, gives an early warning in advance, avoids fault accumulation, and guarantees operation of the phase modifier.

The invention discloses an Ethernet-based distributed cache coherence protocol, an implementation method, an implementation device and an implementation system. A plurality of computing nodes are connected through a packet switching network. Each computing node comprises a CPU / GPU (Central Processing Unit / Graphics Processing Unit) and a local cache thereof, and is provided with a cache agent. The far-end memory is organized in home nodes, and each home node manages a part of physical address space and is equipped with a directory controller. When the CPU of the computing node accesses a far-end memory address and does not hit in the local cache, the CA of the computing node replaces the far-end memory address and communicates with the DC managing the address through the network so as to maintain the cache consistency of the data among all the nodes. Based on a cache consistency protocol of a directory, the CXL.cache consistency of a plurality of independent computing nodes can be maintained in a low-overhead and high-reliability mode on a high-delay and lossy packet switching network, and broadcast storm caused by a monitoring protocol is avoided.

The invention discloses a double-master-control dynamic cooperation hybrid power system and a control method. The system comprises a double-master-control dynamic cooperation framework, a master control unit A and a master control unit B synchronize data through a communication bus and dynamically distribute tasks according to a load rate; the hybrid energy storage expansion unit is formed by connecting a lithium iron phosphate battery pack and a capacitor bank in parallel through a bidirectional DC / DC converter; a dual-channel redundancy communication mechanism is adopted, a CAN bus is adopted for parallel communication with the Ethernet, automatic switching is achieved in the case of faults, and no data is lost; the predictive fault switching module is used for predicting a fault risk based on the LSTM neural network and starting standby main control unit preloading; and a machine learns a load optimization engine, deploys a reinforcement learning algorithm to dynamically adjust an output ratio and performs online optimization. The method comprises the steps of system initialization, master control task allocation and the like. The task processing efficiency and flexibility of the system are improved, reliable and stable communication is guaranteed, the fault risk is reduced, and the adaptability to load change and the energy utilization efficiency are 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 cabin integration method of whole vehicle self-adaption platform service based on SOA and a vehicle, and relates to the technical field of vehicle SOA service, the method comprises the following steps: deeply integrating functional components of a whole vehicle self-adaption platform into an Android operating system, and embedding a communication module into an Android hardware abstraction layer; the original biochemical deployment of the SOA service in the cabin domain is realized; meanwhile, an efficient and low-delay service calling interface is constructed by expanding a communication mechanism between Android native processes, so that the Android application can directly call the whole vehicle level SOA service, and the dependence of traditional cross-domain communication on a vehicle-mounted Ethernet and a central gateway is avoided; besides, processor core resources are dynamically allocated in combination with the function security level of the SOA service, so that the real-time performance and execution reliability of high-security-level tasks are guaranteed, and the overall resource utilization efficiency of the system is improved.

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.

The invention discloses a lithium battery system with a remote upgrading function, belongs to the technical field of lithium battery management, and aims to solve the problems that an existing system is high in field upgrading cost, easy to fail in upgrading, split in operation and maintenance functions, lack of outdoor theft prevention and the like. The system comprises a lithium battery body, a BMS (Battery Management System), an embedded Web UI (User Interface) and a multi-protocol communication module, the BMS is integrated with an Ethernet, a CAN (Controller Area Network) and an RS485 (Recommended Standard 485) communication unit, an upgrade failure three-level protection mechanism is set, and host-slave parallel operation collaborative upgrade and configuration persistence are supported; the embedded Web UI integrates refined log management, three-level password authority control and anti-theft closed-loop control functions; the multi-protocol communication module is compatible with ModbusTCP and SNMP protocols, and has interface backup and fault redundancy design. According to the system, remote upgrading, integrated operation and maintenance and safety protection of the lithium battery are achieved, the upgrading success rate reaches 99.8% or above, the operation and maintenance cost is reduced by 90%, the fault processing efficiency is improved by 85%, and the system can flexibly adapt to scenes such as a communication base station and a data center and has high practicability and market competitiveness.

The invention discloses an industrial intelligent installation and adjustment platform construction and performance optimization method based on digital twinning, and relates to the technical field of intelligent manufacturing and digital twinning, and the method comprises the following steps: building a unified time-frequency auditing base line, carrying out the continuous sampling of Ethernet switch route refresh pulse and programmable logic controller synchronization rhythm, and obtaining a unified time-frequency auditing base line; extracting a time drift curve, and constructing a time consistency reference surface; and executing causal playback based on the time consistency reference plane, reconstructing a frame sequence change track before and after the interruption of the communication chain, extracting a time sequence dislocation fingerprint and a packet loss link, and generating a pseudo operation risk distribution diagram. According to the method, through establishment of a time consistency reference surface, causal playback, sequence consistency check, time difference injection and evidence chain construction, microsecond-level beat synchronous control and pseudo operation identification are realized, and through combination of phase traction and a reversible time grid, abnormal chain fusing and self-healing are realized. And the real-time performance, the stability and the intelligent level of the digital twin installation and adjustment system are comprehensively improved.

The invention discloses an underground mine deep mining rockburst monitoring and early warning system, which relates to the technical field of mining, and comprises a sensing module, the output end of the sensing module is communicated with the input end of a wireless network module, the output end of the wireless network module is communicated with the input end of a data acquisition module, and the output end of the data acquisition module is communicated with the input end of a data processing module. The output end of the data acquisition module is communicated with the input end of the Ethernet module, and the output end of the Ethernet module is respectively communicated with the input ends of the terminal display module, the communication module and the early warning decision module. According to the invention, through the sensing module, the data acquisition module and the early warning decision module, real-time acquisition of rock mass multi-dimensional parameters, adaptive coverage monitoring and interference signal filtering are realized, rock burst precursor features are accurately identified, the problems of many monitoring blind areas, large data interference and low identification precision of a traditional fixed sensor network are effectively solved, and the method is suitable for popularization and application. And the real-time performance and the accuracy of deep mining rock burst early warning are obviously improved.

The invention relates to the technical field of numerical control machine tool intelligent manufacturing and industrial data collection, in particular to a machining data collection method and system applied to a numerical control machine tool, and the method comprises the following steps: S1, the classification and access scheme design of the numerical control machine tool: dividing the numerical control machine tool into a class I intelligent new machine tool, a class II semi-intelligent machine tool and a class III old dumb equipment according to the digitization capability, a classification access scheme of combination of a general protocol adapter, a serial port-Ethernet converter and a non-intrusive sensor is respectively adopted to realize data access of heterogeneous and old equipment; uniform access of 10 + brand numerical control machine tools is supported, the data intercommunication rate of heterogeneous equipment reaches 100%, the problem of'information isolated island 'is solved, six types of equipment states are recognized, and the OEE calculation precision is improved to + / -2% and is improved by 5 times compared with a traditional method.

The invention relates to the technical field of electric connector weak light assembly vibration compensation alignment methods, particularly discloses an electric connector weak light assembly vibration compensation alignment method, and aims to solve the problems of low electric connector assembly positioning precision and high pseudo soldering rate caused by vibration in a weak light environment. The method comprises the following steps: monitoring the thermal radiation change of a vibration source in real time through an infrared thermal imaging sensor, and pre-judging a vibration acceleration vector in combination with a lightweight long-short-term memory neural network; synchronously triggering dual polarization angle imaging to respectively capture a housing reference mark and an enhanced terminal metal feature; the vibration data and the polarization image flow are fused in the field programmable gate array, a self-adaptive optical flow algorithm is adopted to resolve the displacement compensation amount, and a piezoelectric ceramic actuator is driven to carry out submicron order reverse displacement compensation; when the compensation amount exceeds a threshold value, a low-delay correction instruction is sent to the robot through an Ethernet control automation technology bus, and the steady-state error is ensured to be smaller than 0.3 micrometer by combining a strain gauge fine tuning feedback loop. According to the technical scheme, the assembling precision, efficiency and production line adaptability are remarkably improved.

The invention discloses a high-voltage cascade valve hall energy storage broadband oscillation self-adaptive layered suppression system and method, and the system comprises a system layer controller, a valve hall layer controller and a unit layer controller which communicate through a dual-redundancy Ethernet. The system layer controller achieves the global oscillation monitoring and task distribution based on the electrical quantity of a grid-connected point. A valve hall layer controller monitors the state of the power unit, calculates the optimal control parameter and coordinates the action of the unit; and the unit layer controller receives the parameters, adaptively adjusts and executes control. The method comprises the steps that oscillation modes and risks are recognized through multi-domain detection; a Gaussian distribution function distributes a valve hall task weight; performing pole assignment to optimize PI parameters; performing feedforward compensation and PWM optimization execution suppression; the effect is evaluated regularly and adjusted dynamically, and reference parameters are recovered gradually after oscillation is eliminated. According to the invention, the layered architecture of the high-voltage cascade energy storage system is fully utilized, a three-level cooperative control strategy is designed, control parameters of each layer are adaptively adjusted according to oscillation characteristics, and rapid and accurate suppression of broadband oscillation is realized.

The invention provides a vehicle-mounted Ethernet anomaly detection method and system based on a multi-scale time window, and relates to the technical field of vehicle-mounted Ethernet, and the method comprises the steps: introducing a multi-scale time window mechanism into the vehicle-mounted Ethernet, and combining bypass mirror image collection, fine-grained original feature extraction, PCA dimension reduction and a self-encoder model which is trained only based on normal traffic, thereby achieving the anomaly detection of the vehicle-mounted Ethernet. Therefore, high-sensitivity and low-false-alarm detection of communication abnormity is realized. According to the method, behavior laws of traffic under different time granularities in a time-sensitive network environment are fully utilized, short-term burst and long-term slow abnormal modes are modeled through a plurality of sliding windows respectively, a dynamic judgment threshold is independently set for each time window, and the recognition capability for unknown attacks is remarkably improved; meanwhile, the whole process is controllable in calculation overhead, is suitable for a vehicle-mounted embedded platform with limited resources, and effectively gives consideration to real-time performance, accuracy and deployment feasibility.

The invention discloses an automatic test system for detecting an IO port on an MCU controller, and particularly relates to the technical field of automatic test and hardware-in-the-loop verification, the system takes a TSMaster as an upper computer, a programmable power supply, a digital multimeter and a controllable relay matrix are combined, and input injection, output measurement and controlled power supply disturbance are realized through a CAN / Ethernet / SCPI. The system comprises an input injection and channel switching module, an output drive and high-resistance isolation module, a power supply disturbance and alarm verification module, a unified acquisition and self-calibration compensation module, a criterion evaluation / report module, a regression module and the like, completes alignment and online small signal calibration and crosstalk compensation under a unified time base, constructs a minimum evidence unit, and implements interval criterion and time sequence robustness evaluation. And outputting an auditing report and triggering regression scheduling to realize high coverage of IO port functions and boundary working conditions and repeatable verification.