328results 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.

The invention discloses a cluster collection communication system applied to AI data stream processing, which relates to the technical field of distributed systems and network engineering and comprises a topology network deployment module, a data stream spatio-temporal data acquisition module, an optimization verification module, a state monitoring and early warning module and a visual traceability module. The topology network deployment module synchronously processes AI data streams, the data stream spatio-temporal data acquisition module extracts an entropy value and a covariance matrix, the optimization verification module outputs optimization parameters and a credible verification result, the state monitoring early warning module sets an adaptive threshold value to realize graded early warning, and the visual traceability module generates a three-dimensional thermodynamic diagram and a traceability graph. According to the method, the data stream processing efficiency is improved through the star-ring hybrid topology and the low-delay protocol, the decision credibility is enhanced in combination with quantum optimization and block chain verification, accurate early warning and three-dimensional visual traceability acceleration fault positioning are realized by using dynamic weighted monitoring and an adaptive threshold, and an efficient and intelligent full-stack solution is provided for AI trunking communication.

A terminal according to one aspect of the present disclosure includes: a receiving section that receives one reference signal among a plurality of reference signals transmitted by using respective different resources; and a control section that controls reception of two or more reference signals among the plurality of reference signals, based on a result of reception of the one reference signal. The number of the plurality of reference signals is larger than 64. According to one aspect of the present disclosure, coverage can be improved in consideration of overhead.

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.

A switched network, an online computing method for a switched network, an electronic device, and a non-transitory computer-readable storage medium. The switching network includes a plurality of switching nodes connected to each other to provide a communication network, where the plurality of switching nodes each include an in-network computing proxy node configured to receive and perform in-network computing tasks. The switching network can reduce communication delay and improve efficiency.

The embodiment of the invention provides a man-machine cooperative work system, a man-machine cooperative work method, a robot and a human end, and relates to the technical field of robotics.The man-machine cooperative work method includes the steps that a communication relay link is formed by selecting part of a plurality of robots for map exploration and used for achieving human aided tasks, and part of the robots conduct distributed multi-machine cooperative exploration; and the other part of robots form a stable communication relay link to execute the human aided task, and each robot in the communication relay link can return to the exploration team to continue the map exploration task after completing the human aided task. Compared with a scheme only capable of realizing multi-machine collaborative exploration, the embodiment of the invention has the advantages that two working modes of multi-machine collaborative exploration and human-machine collaborative execution of the human auxiliary task can coexist, and the two working modes can be switched back and forth. Thus, cooperative exploration can be carried out in a communication limited environment, human aided tasks can also be carried out, and user requirements can be better met.

The invention relates to the technical field of double-loop network links, and particularly discloses a redundancy system of a double-loop network link, which comprises a main rack and a plurality of extension racks, and is characterized in that the main rack comprises a first controller, a second controller, a first CPU module base, a second CPU module base, a plurality of first I / O modules and a plurality of first I / O module bases, the first CPU module base is positioned at the head end of the main frame; according to the invention, by optimizing the network layout and reducing the transmission hop count of the data packet in the double-loop network, the network delay is reduced, the redundancy is ensured, the complexity of a redundant path is reduced as much as possible, the introduction of excessive extra delay is avoided, and a switch with high forwarding rate and low delay is selected, so that the overall performance of the network is improved, and the network performance is improved. High-quality optical fibers and cables are adopted, signal attenuation and transmission delay are reduced, and the length and complexity of a transmission path are correspondingly reduced, so that the phenomenon that network response time is increased is avoided, and use by people is facilitated.

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 discloses an SRB data transmission control method and device, an electronic device and a storage medium, the method and device are applied to an SRB system, and the SRB system comprises a plurality of SRB devices connected into a ring structure. The data transmission control method specifically comprises the following steps: in response to a time slice configuration request of a user, configuring communication time slices of a plurality of SRB devices, so that communication time slices of two ports of each SRB device have a coincident time period. And in response to a data transmission request of the system, executing a data transmission operation on the communication equipment needing the communication service based on the SRB system subjected to the configuration processing. As the communication time slices of the two ports coincide, when one communication device connected with the SRB system initiates flow transmission, the flow transmission is immediately forwarded to the other communication device, at the moment, the other communication device receives the flow at the same time, no delay exists in the transmission process, and the real-time performance of data transmission is guaranteed.

The invention discloses a heterogeneous networking architecture and method based on an electric red-hong system distributed soft bus, the heterogeneous networking architecture comprises an equipment grading module, a hybrid topology networking module, a main / standby path configuration module and a communication protocol adaptation module, the equipment grading module divides equipment into a rich type and a thin type according to capability, the rich equipment takes the core role of relay and calculation, and the thin equipment takes the core role of relay and calculation; the thin device focuses on the basic function, accurate resource allocation is achieved, and computing power waste is avoided; the hybrid topology networking module enables rich equipment to construct a mesh topology through a high-speed link, and multi-path transmission of key data is guaranteed; the thin device is connected with the rich device in a single-hop mode to form a star topology, connection is simplified, the communication range is expanded by means of the rich device, and efficiency and coverage are both considered; the main and standby path configuration module is used for configuring double paths for equipment, and automatic switching is realized when a main path fails, so that the anti-fault capability is greatly improved, and equipment disconnection caused by a single link fault is completely eradicated; the communication protocol adaptation module dynamically selects a protocol according to needs, breaks the protocol barrier, reduces the conversion delay, and improves the overall communication efficiency and compatibility.

The invention relates to the technical field of smart home, and discloses a communication method and device, computer equipment, a storage medium and a program product. The method comprises the following steps: when a plurality of main devices in a smart home network do not receive a communication token, determining a target main device from the plurality of main devices according to a preset rule; wherein the target master device is a device for receiving the communication token, and the smart home networking comprises a plurality of master devices; and sending the communication token to the target master device, so that the target master device communicates with a target slave device corresponding to the target master device according to the communication token.

A system for transmission of primary and secondary data, the system comprising: a bus; a parent node coupled to the bus; and a plurality of child nodes, each coupled to the bus, wherein: the parent node is configured to periodically transmit a time domain multiplexing (TDM) cycle beacon to the bus, wherein the TDM cycle beacon signals a start of a primary data transmission interval, and wherein the primary data transmission interval is a period reserved for transmission of primary data by the parent node and the plurality of child nodes; the parent node and each of the plurality of child nodes are operable to, responsive to the TDM cycle beacon, transmit primary data for a current TDM beacon period associated with the TDM cycle beacon to the bus during the primary data transmission interval; and the parent node and the plurality of child nodes are operable to transmit secondary data to the bus during a secondary data transmission interval between an end of the primary transmission interval and transmission by the parent node of a next TDM cycle beacon.

A deep well ventilation system is a core link for guaranteeing safe production of a mine and is also a key technical challenge for realizing efficient and green mining of an ultra-large deep well mine. Ventilation energy-saving optimization is an important subject which must be solved by deep well mining. In a deep well ventilation system, reasonable configuration of a communication network structure is a basic guarantee for achieving real-time monitoring of underground environment data and reliable transmission of control instructions. The main contradiction faced by the current deep well communication network design lies in that the network redundancy design introduced for improving the reliability of data transmission can enhance the fault-tolerant capability of the system, but also causes the problems of complex network topology structure and increased construction cost at the same time. In order to solve the technical problem, the invention provides a communication network design and configuration method suitable for a mine ventilation scene. According to the method, a quantitative relation model of the network construction cost and the safety performance is innovatively established, and the optimal network node configuration scheme is determined through target optimization. Particularly, according to the method, the high reliability of the ring network and the high efficiency of the tree network are fused, so that the optimal design of the communication network topology structure is realized, and the network economy is remarkably improved while the system reliability is ensured.

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 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.

The invention provides an optical fiber transmission system and method with multi-module synchronization and FPGA logic remote upgrading, belongs to the technical field of data transmission, and solves the problems that an existing optical fiber transmission system is provided with a small number of optical modules, the interface rate is low, and the data transmission efficiency is low. The invention discloses an optical fiber transmission system which solves the problems that in the prior art, the requirement for high-speed data transmission cannot be met, the FPGA logic program updating time consumption is large, extra interface resource overhead exists, and the transmission distance is limited in the prior art, and the optical fiber transmission system comprises N PCIe optical fiber data transmission modules which are connected with one another through synchronous interfaces, each PCIe optical fiber data transmission module comprises an FPGA control chip, a DDR cache, a FLASH chip, a clock, a synchronous interface, a power supply conversion unit, a PCIe interface and at least one optical fiber interface.

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.

Embodiments of the present application disclose a communication system and method. Among them, the system includes: a local node, N extended nodes, and multiple BLVDS buses; the local node includes a local node communication module and a local node I / O module, and the local node communication module and the local node I / O module are connected through a BLVDS bus; each extended node includes an extended node communication module and an extended node I / O module, and the extended node communication module and the extended node I / O module of the same node are connected through a BLVDS bus; the local node communication module includes a first LVDS interface and a second LVDS interface, the extended node communication module includes a third LVDS interface and a fourth LVDS interface, and the local node communication module and the N extended node communication modules are connected in a ring through multiple LVDS interfaces, so that high-efficiency and accurate communication between large-scale extended node I / O modules and the local node can be achieved at low cost.

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.

To enable reduction of a time required for establishing communication paths in a communication system including multiple relay devices and an SDN controller.SOLUTION: A communication system 100 includes multiple relay devices R1 to R4 and an SDN controller 10. The multiple relay devices R1 to R4 are connected in a ring shape on multiple communication paths for multiple communication devices to communicate with each other. The SDN controller 10 is configured to manage the multiple relay devices R1 to R4. The multiple relay devices R1 to R4 are configured to receive frames transmitted from the SDN controller 10 and to transmit the received frames to the multiple adjacently connected relay devices R1 to R4 among the multiple relay devices R1 to R4.SELECTED DRAWING: Figure 1

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.

Provided is a data synchronization method for a passive optical network. The method comprises: an alignment and restoration step of synchronously aligning a plurality of first data signals, and restoring the aligned plurality of first data signals into a second data signal; performing passive optical network synchronization verification on the second data signal; if the second data signal fails to pass the passive optical network synchronization verification, turning to the alignment and restoration step; and if the second data signal passes the passive optical network synchronization verification, determining that synchronization is successful.

The invention relates to a system (100) for transmitting data between client devices. Such a system comprises: a data transmission medium (120) comprising a plurality of optical fibre sections and a plurality of interface devices (110a, 110b, 110c, 110d), each of the interface devices configured to allow at least one client device (ll0cl) to communicatively connect to the system by means of a CAN protocol. The interface devices are communicatively connected to one another via the data transmission medium by implementing another data transmission protocol and defining a ring-shaped data transmission topology. The interface devices are configured such that at least one client device is able to transmit data to at least one other client device by implementing the end-to-end CAN protocol.