127results 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 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.

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.

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.

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 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.

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 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.

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.

The invention provides a node communication method and device, electronic equipment and a storage medium, the node communication method and device are applied to a field node in a control system, the control system further comprises a central server and a plurality of other field nodes, and the field node and the other field nodes jointly form a ring network through wired connection. The field node is provided with a wireless communication unit, and the method comprises the following steps: when the wireless communication unit of the field node is invalid, packaging local data to be sent to the central server into a ring network data packet; determining a target node adjacent to the field node from the ring network; and sending the looped network data packet to the target node, so that the target node forwards local data in the looped network data packet to the central server through a wireless link. Therefore, an alternative communication path is provided for the node with the wireless failure, and the continuity of data uploading under the condition of the single-point wireless failure is ensured.

The embodiment of the invention provides a set communication method and device, a storage medium and a computer program product. For the condition that the computing system comprises N computing nodes and each computing node comprises M computing units, a logical topology of the computing system is constructed, and the logical topology comprises a first ring topology among the N computing units belonging to different computing nodes and a second ring topology among the M computing units belonging to the same computing node, based on the two different ring topologies, two different transmission paths can be constructed, one of the two different transmission paths preferentially uses the connection of the first ring topology for data transmission, and the other one preferentially uses the connection of the second ring topology for data transmission. According to the method, the number of data channels adopting two different transmission paths is controlled, and data transmission is performed on the data channels by adopting the corresponding transmission paths, so that bandwidth resources in the computing nodes and bandwidth resources between the computing nodes are fully utilized, and maximum utilization of the bandwidth resources is realized.

The invention belongs to the technical field of engineering machinery electronics and electrical, and discloses an electric loader domain centralized electronic and electrical architecture based on vibration self-adaption and a control method, comprising a vehicle control domain, an intelligent driving domain, an intelligent cabin domain and an intelligent operation domain which are connected through a gigabit Ethernet to form an annular topological structure, and the MRP protocol is supported to realize less than or equal to 50ms fault switching. According to the invention, wire harnesses are greatly reduced, high reliability and low delay communication performance under high vibration, strong EMI anti-interference capability, high precision intelligent operation control and low cost are realized, and L4-level automatic driving related functions and new energy expansion are supported.

The application discloses a kind of large-scale IP multicast service's two-layer annular reliable switch cluster method, comprising: interconnection switch 1, switch 2, switch 3 and switch 4 into 1 annular network, to constitute annular cluster;Adjacent switch 1 and switch 2 are configured as an aggregation switch;Switch 3 and switch 4 are set as normal switch;The port of aggregation switch, switch 3 and switch 4 is divided into inter-machine interconnection port and normal end device access port;Annular cluster is configured using modified IGMP snooping, and the mapping relationship table of IP multicast service frame and destination port is obtained;When switch receives IP multicast service frame, according to mapping relationship table, find the destination port corresponding to IP multicast service frame received by itself, send IP multicast service frame to corresponding destination port, while forwarding IP multicast service frame to adjacent switch, realize two-layer forwarding to IP multicast service.

An avionics ring communication network includes at least three communication nodes connected to each other. Each node includes a pair of communication ports and is connected between the respective previous and following nodes. At least one node includes a sequencing module configured to generate data transport frames. Each node is intended to be connected to respective avionics equipment and includes a processing module to receive data, via the frames, intended for the equipment and / or to send data from the equipment. At a given time, only one of the nodes is configured to generate the transport frames, the sequencing module being activated for only one of the nodes at a time.

The invention discloses an Ethernet loop chain communication system and method, and the system comprises a plurality of control nodes which form a loop chain communication network topology. Each control node comprises a first communication interface and a second communication interface, and the first communication interface and the second communication interface are connected in series in a loop chain communication network and are used for communication among different control nodes; in each control node, the second communication interface is configured to only transmit and not receive, the first communication interface is configured to transmit and receive, and at the moment, the loop chain communication network supports one-way communication; and when the second communication interface of at least one control node is disconnected from the loop chain communication network, the second communication interface in the control node is configured to be capable of transmitting and receiving.

Some embodiments relate to a coordinator; a plurality of subscribers, each comprising a button, a memory and a display; and a bus which couples the coordinator to the plurality of subscribers. The coordinator and the plurality of subscribers are configured to be set in an addresses allocation mode. In the addresses allocation mode, the coordinator is configured to indicate a first subscriber number and to broadcast a first broadcast message to the plurality of subscribers. In the addresses allocation mode after activation of a button of a first subscriber of the plurality of subscribers, the first subscriber is configured to be activated and to send an acknowledge message to the coordinator.

A network establishment method, an Ethernet system, and a vehicle are provided. [Solution] The network includes M backbone nodes. Each of the M backbone nodes includes a first backbone port and a second backbone port, forming a ring network. The M backbone nodes include a first backbone node. The first backbone port of the first backbone node is in a forwarding state, and the second backbone port of the first backbone node is in a blocking state. Both the first backbone port and the second backbone port of the other backbone node are in a forwarding state. In the network establishment method, the first backbone node obtains link failure information of the ring network, and switches the second backbone port of the first backbone node to the forwarding state based on the link failure information.

The invention discloses a power network device-oriented distributed heterogeneous memory shared data synchronization method and system, a medium and a processor, and relates to the technical field of power network data processing. The invention aims to solve the problems of poor adaptability, high synchronization delay, high resource overhead and the like in the prior art. According to the technical scheme, the method is characterized by comprising the following steps: constructing an annular logic topology of power network device nodes, initializing a shared memory pool, and establishing RDMA communication connection to realize zero-copy transmission; classifying the power grid data in a layered manner according to timeliness and importance, and storing the data based on a differentiated replication strategy to realize synchronization; and dynamically adjusting the data consistency level through a Paxos variation algorithm in combination with network state parameters, a data layering result and a topological structure. According to the invention, the data synchronization delay can be reduced to 0.8-3.2 ms, the reliability and resource overhead are balanced, the power network isomerism and key business requirements are adapted, and the stable operation of the intelligent power grid is ensured.

This application provides a topology network and a management method. A master node device and a slave node device are configured to perform an initialization operation after being powered on, so that the master node device determines a dynamic address of each node device in the topology network; the master node device and the slave node device are further configured to perform an enumeration operation based on the dynamic address of each node device in the topology network after completing the initialization operation, so that the master node device obtains a port attribute of each node device in the topology network; the master node device and the slave node device are further configured to perform a configuration operation based on the port attribute of each node device in the topology network after completing the enumeration operation, to complete setting a virtual channel configuration table of each node device in the topology network; and the master node device and the slave node device are further configured to perform data transmission based on the virtual channel configuration table after completing the configuration operation. After the configuration operation is complete, the topology network can run stably and efficiently.

Ring Avionics Communication Network and Associated Civil Aircraft. The invention relates to a ring avionics communication network (15) comprising at least three interconnected communication nodes (20), each node having a pair of communication ports (Rx1, Tx1; Rx2, Tx2) and being connected between respective preceding and following nodes, at least one node (20MA) having a sequencing module (25) configured to generate data transport frames, each node being intended to be connected to a respective avionics device (18) and having a processing module (28) for, via said frames, receiving data to said device and / or sending data from said device, at any given time, only one of the nodes (20) being configured to generate the transport frames, the sequencing module (25) being activated for only one of the nodes at a time. Figure for the abstract: Figure 1

The application discloses a method and device for taking 5G wireless network as a backup link under a wired ring network. The method is based on industrial data communication networking, and establishes a VXLAN tunnel between each first 5G industrial gateway and a second 5G industrial gateway by adopting a VXLAN technology, and adds all LAN ports of each first 5G industrial gateway and interfaces corresponding to the VXLAN tunnel in a same bridging group, so that each first 5G industrial gateway and the wired ring network form a large two-layer network. Based on an RSTP protocol, each first 5G industrial gateway exchanges networking with the wired ring network through the large two-layer network, and builds a backup link of the 5G wireless network and each PLC device and each DCS system, so that the 5G wireless network can be taken as the backup link under the wired ring network, and the wired ring network can be backed up by the 5G wireless network.