221results about "Loop networks" patented technology

The invention relates to the technical field of distributed architectures, and discloses a multi-screen cooperative control method based on an OpenHarmony distributed architecture and an all-in-one machine system.The method comprises the steps that a broadcast frame found by equipment is sent through an OpenHarmony distributed soft bus, security authentication is conducted on a plurality of display terminals responding to the broadcast frame, a virtual bus channel is established, and the virtual bus channel is sent to the display terminals; obtaining a virtual device group; creating a distributed industrial data object on the main control equipment of the virtual equipment group and synchronizing the distributed industrial data object to each slave display terminal to obtain a distributed data model; mapping the anonymous shared memory to an annular buffer area; and writing real-time data acquired by the industrial field equipment into an annular buffer area, and transmitting the real-time data to each slave display terminal of the virtual equipment group, in the method, each display terminal accesses an agent instance of an industrial data object through a distributed data management framework; and the requirements of high reliability, low delay and high consistency on multi-screen cooperative control in an industrial field are met.

The invention provides an EtherCAT slave station port identification and topology diagnosis system and method. Comprising a master station access interface module which is used for being in butt joint with an EtherCAT master station protocol stack and establishing a read-write channel for a data link layer register of a slave station controller; the port state acquisition module is used for analyzing to obtain a physical connection indication, a loop opening and closing state and a communication state of each port, and generating a port state record; the state analysis and control module is used for writing a port opening instruction into a data link layer control register when physical connection exists and a loop is closed, and selecting a preset recovery port of the system to execute register writing when all ports of the target slave station are detected to be in a closed state, so as to obtain a port judgment result; and the topology and diagnosis output module is used for establishing a connection relationship between slave stations based on the port judgment result to generate network topology data. According to the application, unified collection and analysis of registers, automatic judgment and recovery of ports, topology reconstruction and standardized diagnosis output can be realized.

Methods, systems, and devices for wireless communications are described. In some examples, a transmitting device associated with one or more non-coherent demodulation reference signal ports may transmit data including a phase change estimation reference signal with multiple reference signal groups. In some examples, multiple different phase change estimation reference signal ports may be code-division multiplexed to transmit the phase change estimation reference signal in the same set of reference signal groups using a different orthogonal cover code for each phase change estimation reference signal port. In some other examples, the different phase change estimation reference signal ports may be used for transmitting the phase change estimation reference signal in the different time-division multiplexed sets of reference signal groups. In such cases, by assigning two phase change estimation reference signal ports to two TDM sets, the two phase change estimation reference signal ports may be time-division multiplexed.

The invention relates to a master-slave communication circuit and method for constructing a ring network based on an RS485 bus, and belongs to the technical field of communication, and the master-slave communication circuit forms the ring network by a host and a plurality of slaves. The host is provided with an RS485 port 1 and an RS485 port 2, the slaves are sequentially connected end to end to form a ring, the head end is connected with the host port 1, and the tail end is connected with the port 2. And the slave circuit comprises two RS485 driving chips, two groups of AB ends are respectively connected in series with the bus, and T / R ends are respectively connected with IO1 / IO2 of the MCU. The RXD1 / RXD2 of the MCU is connected with the RO ends of the two chips, and the TXD1 / TXD2 of the MCU is connected with the DI ends of the two chips. The circuit comprises four diodes, wherein the cathode of D1 is connected with a connection point of RXD1 and RO, and the anode of D1 is connected with a connection point of TXD2 and DI; the cathode of D2 is connected with the RXD2 and RO connection point, and the anode of D2 is connected with the TXD1 and DI connection point; the cathode of D3 is connected with TXD1, and the anode is connected with the connection point of TXD1 and DI; the cathode of D4 is connected with the TXD2, and the anode is connected with the connection point of the TXD2 and the And one ends of the two resistors R1 and R2 are connected with VCC, and the other ends are respectively connected with the two DI ends. The method has the advantages that when the bus breaks down, normal operation of the system is not affected, and the communication distance of the bus is prolonged.

The invention relates to the technical field of civil engineering structure safety monitoring and Internet of Things communication, in particular to a bridge and tunnel structure health monitoring system and a looped network fault self-healing communication method. The system comprises a sensing acquisition layer, a ring network communication layer and a monitoring application layer, wherein the sensing acquisition layer comprises a plurality of data acquisition nodes which are deployed at key parts of a bridge and a tunnel in a distributed manner and is used for acquiring physical response data; according to the ring network communication layer, data acquisition nodes are connected in series through communication links to form a physical closed-loop topology, and each data acquisition node is provided with double communication ports and is connected with adjacent network equipment; the ring network communication layer operates an intelligent route switching mechanism, and can control nodes to switch a route path when a fault occurs. Through the three-level architecture, the physical closed-loop topology, the double communication ports and the intelligent route switching mechanism, the single-point fault hidden danger of a traditional communication architecture is solved from the source, and the system communication reliability and the data transmission continuity are greatly improved.

The invention provides a computing system and a computing method, which can be applied to the field of distributed technologies. The computing system comprises a plurality of computing devices, any computing device is directly connected to the other two computing devices in the plurality of computing devices through a host direct connection link so as to form a ring communication topology based on the plurality of computing devices, the adjacent computing devices in the ring communication topology carry out data transmission through the host direct connection links between the adjacent computing devices; the plurality of shared memory devices are directly connected with one another through the memory direct-connection links, and the plurality of shared memory devices are directly connected to the corresponding computing devices in the plurality of computing devices through the device direct-connection links respectively.

In a data transmission method, each ring network interface is associated with a ring identifier, and a ring-incoming packet carries a ring identifier of a ring network interface through which the packet is first forwarded. When a node in a ring network detects a link fault in a process of transmitting a packet, the node determines, with reference to a ring identifier and a wrapping identifier carried in the packet, to perform wrapping or discard the packet. According to the method, two sub-ring networks of a dual-ring coupled ring network can be allowed to separately implement one time of wrapping.

Systems and methods for loop detecting and remediating in a firmware framework are described. In an illustrative, non-limiting embodiment, an Information Handling System (IHS) may include a controller that instantiates an orchestrator, and multiple devices coupled to the controller, wherein each device instantiates a node. The IHS may also include executable instructions to identify a plurality of communication links between the nodes, determine that at least a subset of the communication links causes a loop to be formed, and communicate with one of the nodes to block one of the communication links with an adjacent node to the one node.

The invention discloses a charging pile ring network communication method based on a virtual interaction technology, and belongs to the technical field of electric vehicle charging. The method comprises the steps that a terminal charging management control unit TCCU and a plurality of terminal management units TMUs are connected through network cables to form an annular physical connection system, and an annular network topology is constructed; using the terminal charging management control unit TCCU as a server to configure a fixed IP address for the terminal charging management control unit TCCU; each TMU is used as a client, and a unique IP address and a unique MAC address are automatically allocated based on single-board dial-up of the TMU; the TMU sends an ARP (Address Resolution Protocol) message to obtain a server MAC (Media Access Control) address, then the TMU initiates a TCP / IP (Transmission Control Protocol / Internet Protocol) connection request, the TCP / IP connection request is forwarded through network ports of other TMUs on the ring network system, and a stable communication link is established after the TCCU responds to the TCP / IP connection request; and the TMU receives the network data through the network port and compares the target MAC address, and non-self data is forwarded to the next TMU through another network port until the data is sent to the server to complete communication.

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

This invention discloses a network synchronization device that may include a matched filter. The matched filter may be configured to generate an event for synchronizing the operation of elements in the network, at least in part in response to a timing frame generated at a network switch. The event for synchronizing the operation of the element may include a first event generated at least in part in response to first information associated with a first element and a second event generated at least in part in response to second information associated with a second element. Related systems and methods are also disclosed.

The application relates to the technical field of field bus control, and particularly discloses an electrical connection method based on a field bus control system, which adopts a double-loop redundant main and branch isolation topology design, and connects field devices of different bus protocols into an adaptive multi-protocol interface module; global configuration is completed through a controller Web interface, and device addresses and control variables are bound; the design breaks through the technical inertia of single-dimension optimization in the prior art, and creatively realizes the synergistic fusion of double-loop hot standby redundancy and branch electrical isolation, instead of simply superimposing two kinds of topology structures; the core technical contradiction that the main stability and branch fault isolation cannot be considered in the prior art is effectively solved; and the method solves the problem that the traditional field bus control system cannot consider compatibility and stability.

The present disclosure relates to a serial communication network 400 comprising: a plurality of network nodes (402) comprising a primary node (404) and one or more secondary nodes (406a-406d), the plurality of network nodes (402) connected in a daisy chain configuration and configured to communicate according to a first wired communication protocol for serial communication, the first wired communication protocol is an open system protocol; wherein at least one of the network nodes (402) is configured to act as a bridge node (420), and wherein the bridge node (420) comprises communication circuitry configured to: allow communication coupling with the network node (402) and with an external device, receive a first message from the network node (402) according to the first wired communication protocol, and transmit the first message to the external device, and embedding data from the first message into a second message configured according to a second wired communication protocol; and / or receiving a second message configured according to the second wired communication protocol from the external device, and embedding data from the second message into a first message configured according to the first wired communication protocol, the second wired communication protocol being different from the first wired communication protocol.

A data bus subscriber connected to a local bus, particularly a ring bus, has a status signal input for receiving a first status signal value from a downstream data bus subscriber or a terminator, and a status signal output for providing a second status signal value to an upstream data bus subscriber or to a local bus master. The data bus subscriber is adapted to provide the second status signal value based on a logical link of a communication readiness of the data bus subscriber and the first status signal value.

The application discloses a kind of linkage synchronous recording wave method and system based on double redundancy ring network and relative time scale, it is related to electric power automation technical field, including: in the data buffer area of target node, the multiple sampling points relative time scale containing the collection access time of each sampling point is cached;If target sampling point satisfies preset starting recording wave condition, then based on target sampling point relative time scale and the node relative time scale maintained on target node, linkage message is generated;Linkage message is sent to the node to be linked along double redundancy ring network;When the first bit of linkage message is received at the node to be linked, the node relative time scale maintained on the node to be linked is read, and the relative time scale of synchronous recording wave linkage point is determined;In the data buffer area of the node to be linked, the starting synchronous linkage recording wave point position of the node to be linked is found.The application alleviates the technical problems that existing converter station monitoring system does not have panoramic recording wave function and cannot realize recording wave to all data of converter station.

The present disclosure discloses a method and apparatus for monitoring a link state between nodes. The method includes: determining, by a first node, whether to transmit a first diagnosis message to a second node based on a monitoring result of whether to receive message data transmitted by the second node for a first time duration; processing, by the second node, the received first diagnosis message and transmitting the processed second diagnosis message to a third node; processing, by the third node, the received second diagnosis message and transmitting the processed third diagnosis message to the second node; determining, by the second node, whether to transmit the third diagnosis message to the first node; and determining, by the first node, a link state between the first node and the second node based on a monitoring result of whether to receive the third diagnosis message for a second time duration.

The invention relates to a secondary looped network system based on airborne equipment, which comprises a primary looped network and a secondary looped network, and is characterized in that the primary looped network comprises a passenger cabin interface unit and a plurality of area control units, and each area control unit is connected with a plurality of passenger service control units to form the secondary looped network; the area control unit determines the logic position of the area control unit in the first-level ring network by collecting the level state of a set port of the area control unit, and generates a corresponding second-level ring network topological graph by summarizing neighbor node information sent by the passenger service control unit in the second-level ring network where the area control unit is located. The airborne network which is high in reliability, easy to maintain and excellent in experience can be effectively achieved, the problems that a traditional airborne network is slow in convergence and complex in maintenance are solved, and expansibility of the system is improved.

Methods, systems, and devices for wireless communications are described. In some examples, a transmitting device associated with one or more noncoherent demodulation reference signal ports may transmit data including a phase change estimation reference signal with multiple reference signal groups. In some examples, multiple different phase change estimation reference signal ports may be code-division multiplexed to transmit the phase change estimation reference signal in the same set of reference signal groups using a different orthogonal cover code for each phase change estimation reference signal port. In some other examples, the different phase change estimation reference signal ports may be used for transmitting the phase change estimation reference signal in the different time-division multiplexed sets of reference signal groups. In such cases, by assigning two phase change estimation reference signal ports to two TDM sets, the two phase change estimation reference signal ports may be time-division multiplexed.

The present invention relates to a PLC device related to functional safety. The safety control PLC device according to the present invention comprises a plurality of communication modules and a safety control module for controlling same, wherein: the safety control module satisfies a predetermined standard for functional safety and controls the plurality of communication modules; and the communication modules support a RAPIEnet network and constitute each network as a ring network, thereby facilitating adding or expanding of a conventional PLC network, and implementing a stable safety control function.

A vehicle communication system comprises: Ethernet gateways, wherein each of the Ethernet gateways (i) is designated to serve as the Ethernet gateway in addition to performing other automotive functions in a vehicle; (ii) is coupled to multiple buses for respective subsystems having electronic control units (ECUs) communicating using respective automotive bus protocols; and (iii) is configured to encapsulate within Ethernet packets received communications of the respective automotive bus protocols; Automotive Ethernet cables connecting the Ethernet gateways in a ring topology, each of the Ethernet gateways connected to two others of the Ethernet gateways that are adjacent to the Ethernet gateway; and a communication matrix in each of the Ethernet gateways, wherein each of the ECUs is specified as belonging to at least one of multiple virtual local area networks (VLANs), wherein a VLAN tag is included in each of the Ethernet packets.

The invention relates to switching equipment, an online computing method thereof and a multiprocessor system, and belongs to the technical field of communication. The switching equipment comprises N ports and N INC agent modules, the N ports are used for connecting M processors, N and M are integers greater than or equal to 1, and N is greater than or equal to M; the N INC agent modules are connected with the N ports one by one, and the N INC agent modules are sequentially connected to form a ring topology; and each INC agent module comprises an ALU unit. According to the invention, the INC agent module is added to the switching equipment side, so that the switching equipment side has the online computing capability, all intermediate data uploaded to the switching equipment side by the processors can be transmitted and computed in the switching equipment, finally the computing result is returned to the processors, the intermediate data does not need to be transmitted between the processors, and the computing efficiency is improved. Therefore, the data transmission quantity is reduced, and the utilization rate of the processor and the network bandwidth can be improved.

A vehicular circuit body provided in a vehicle, comprising a trunk line that includes a power source line having a predetermined current capacity and a communication line having a predetermined communication capacity, and that is routed in a vehicle body; a branch line that is connected to an accessory; and a plurality of control boxes that are disposed in a distribution manner along the trunk line, the control boxes including a control unit for distributing at least one of power from the power source line supplied to the trunk line and a signal from the communication line, to the branch line connected to the trunk line, wherein the trunk line includes a first trunk line, a second trunk line, and a third trunk line, the first trunk line disposed linearly in a width direction of the vehicle body along a surface of a dash panel that partitions an engine room and a vehicle interior, the second trunk line is disposed to extend in a front-and-rear direction of the vehicle body, the second trunk line is connected to the third trunk line via a joint box installed in a penetration hole of the dash panel, and the joint box includes a housing, relay terminals penetrating through the housing, and a packing that seals a gap between the dash panel and the housing.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a message indicating a reference signal resource set that includes a set of reference signal resources associated with a time division multiplexing (TDM) scheme and a set of spatial precoders. A network entity may use a codebook or an artificial intelligence (AI) model to determine the SRI. The UE may transmit reference signals using the reference signal resources and according to the TDM scheme and using the spatial precoders. The UE may receive a message including a sounding reference signal (SRS) resource indicator (SRI) indicating at least two reference signal resources, which may correspond to a set of beams predicted by the network entity. The SRI may include a linear combination of the reference signal resources. The UE may transmit an uplink message using an uplink transmission beam based on the set of beams.

A method for operating a data network of a motor vehicle is described, wherein the data network comprises a plurality of control units and at least one intermediate Ethernet switch, wherein data packets are sent to or from the control units in the data network, wherein the data network is divided into different segments, wherein specific VLAN IDs are assigned to the respective segments, and wherein the control units are configured to operate in one or more segments.

The present disclosure describes a data center system including an instruction processing device for a chassis including one or more boards, a board including a set of cards, a card including a computing node or a processing device and a controller. The controller can receive an instruction from the instruction processing device through a first communication network between the controller and the instruction processing device. Based on the instruction, the processing device of the card can generate an operation result and provide the operation result to another device of the board through a second communication network different from the first communication network. The second communication network can have a ring topology or other topology. The instruction processing device can further operate a hierarchical manager to create a network manager to manage the operations of the board.

The application discloses a kind of coal mine underground intelligent traffic control systems, belong to coal mine underground automation control technical field, comprising: three groups of mine traffic lights, coal mine underground intelligent traffic control terminal, with the PLC control box connection, inside integrated embedded computer;PLC control box, with three groups of mine traffic lights connection, inside integrated traffic light control basic program module;Intelligent traffic control server group provides vehicle positioning real-time data and data structure processing;Communication network components, adopt underground ring network, build the bidirectional data transmission link of coal mine underground intelligent traffic control terminal, intelligent traffic control server group;By setting the red and green light intelligent scheduling mechanism based on personnel vehicle positioning data and mine camera visual AI identification, get rid of traditional fixed cycle open-loop control, realize the orderly scheduling of who first to who first pass, avoid vehicle invalid waiting, relieve roadway traffic congestion, greatly improve coal mine underground transportation efficiency.

Embodiments of this application provide a data transmission method and apparatus, and an intelligent driving device. The method includes: A first node sends first data to a second node. The second node receives the first data from the first node. A third node obtains second data from the second node. The second data is data obtained by processing the first data by the second node, or the second data is the same as the first data. The first node, the second node, and the third node are connected in series, the first node and the second node are sensing nodes, and the third node is a regional communication unit or a data processing node. Embodiments of this application may be applied to an intelligent vehicle or an electric vehicle. A plurality of sensing nodes are connected in series to a regional communication unit or a data processing node, to help reduce complexity of networking and cabling between nodes.

This application provides a method and device for proxying and forwarding ring network data packets. The method includes: setting up two RPR ports connected to an adjacent node in the RPR ring network and a proxy RPR port connected to a proxy node via a direct RPR link for an RPR logical port; when the collected RPR ring network topology does not include a proxy node, announcing the proxy node to other nodes in the current RPR ring network topology; announcing the nodes in the current RPR ring network topology to the proxy node via the direct RPR link; recording the outgoing interface of the proxy node in the RPR ring selection table as a proxy RPR port; updating the outgoing interface of the RPR broadcast table to the normal RPR port and the proxy RPR port; and based on the updated RPR broadcast table, sending the first RPR broadcast packets forwarded on the ring by each node other than the proxy node to the proxy node through the RPR proxy port.