438results about "Loop networks" patented technology

The invention relates to the technical field of coal mine fully mechanized mining, in particular to a coal mine communication network system based on a time-sensitive network, and the system comprises a wired communication system, the backbone network of the wired communication system is composed of a plurality of TSN network switches which are in ring network topology connection, and the wired communication system is used for accessing coal mine equipment as a terminal to a TSN network; the wireless communication system is connected with the wired communication system, consists of wireless communication equipment compatible with a TSN protocol, and is used for accessing the coal mine equipment into a TSN network through wireless connection; a communication system based on a time sensitive network (TSN) is established, a real-time, determined and reliable communication network is provided for a coal mine production system, wired and wireless communication systems are adopted, the whole coal mine production control system is covered together, and the requirement of automatic control for data communication is met.

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 relay device system is a relay device system to be installed in a vehicle, the relay device system including a wireless relay device configured to wirelessly communicate with a communication device provided outside the vehicle, a plurality of wired relay devices that are connected in a ring to the wireless relay device, and an in-vehicle network formed in a ring by a communication line connecting the wireless relay device and the plurality of wired relay devices, in which the plurality of wired relay devices each include an ECU communication unit configured to communicably connect to an ECU for controlling an on-board device installed in the vehicle, and the wireless relay device and the plurality of wired relay devices are configured to communicate with each other through the in-vehicle network, using two clockwise and counterclockwise paths.

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.

The embodiment of the invention provides an on-chip network topology structure and a routing request sending method and device.The on-chip network topology structure comprises Q first sub-network topology structures, each first sub-network topology structure comprises 2N second sub-network topology structures, each second sub-network topology structure comprises 2M routing nodes, Q, N and M are integers larger than 1 respectively, and M is an integer larger than 1. Each first sub-network topology structure is connected with other Q-1 first sub-network topology structures, the 2N second sub-network topology structures in each first sub-network topology structure are connected to form a ring network topology structure, and the 2M routing nodes in each second sub-network topology structure are connected to form a ring network topology structure. According to the data transmission method and device, the problem that the network delay of data transmission in the network is high is solved, and the effect of reducing the network delay of data transmission in the network is achieved.

The invention relates to the field of crude foil engines, and discloses a crude foil engine control system and a network structure thereof, and the system comprises a crude foil engine PLC, execution equipment, sensing equipment, operation equipment, and a first switch. The execution equipment is used for directly controlling the operation of the crude foil engine; the sensing equipment is used for acquiring environment parameters and an operation state of the crude foil engine; the operation equipment is used for interaction between a user and the PLC; the crude foil engine PLC is used for receiving a signal from the sensing equipment through the first exchange, processing the signal and then outputting a control signal to the execution equipment; and the execution equipment and the crude foil engine PLC adopt an EtherCAT looped network structure. The network structure of the crude foil engine control system adopts an EtherCAT ring network structure, a mode of configuring a virtual server by an industrial router is adopted, and data security isolation of a main equipment network, a DCS data decision network and an AGV auxiliary equipment network is realized through each independent gateway and network port number.

The invention relates to the technical field of energy storage control systems, and discloses a networking structure of an energy storage control system and a control method, in the networking structure, a plurality of main control modules are in communication connection in sequence, the first main control module and the last main control module are in communication connection with an EMS system, and hand-in-hand ring network communication is achieved; the plurality of main control modules and the EMS system are respectively connected to the switch through the Ethernet, and Ethernet communication is realized through the switch. According to the control method, a host can carry out sorting and distribution according to the electric quantity and the number of all current battery compartments, charging is started from the battery compartment with the minimum SOC during charging, and discharging is started from the battery compartment with the maximum SOC during discharging. According to the invention, a dual-network dual-redundancy communication mode between the main control module and the EMS system is adopted, the number of control equipment is reduced, the software and hardware cost is reduced, the continuous stability of system operation is ensured through a redundancy communication structure, and the number of operation equipment can be adjusted and the operation loss can be reduced according to full and full discharge conditions.

The present disclosure relates to a serial communication network (400), including: a plurality of network nodes (402) including a primary node (404) and one or more secondary nodes (406a-406d) connected in a daisy chain configuration and configured to communicate according to a first wired communication protocol for serial communication, wherein the first wired communication protocol is the Open System Protocol; wherein at least one of the network nodes (402) is configured to act as bridge node (420), wherein the bridge node (420) includes communication circuitry configured to: enable a communicative coupling with a network node (402) and with an external device, receive from the network node (402) a first message according to the first wired communication protocol, and embed data from the first message into a second message configured according to a second wired communication protocol; and / or receive from the external device a second message configured according to the second wired communication protocol, and embed data from the second message into a first message configured according to the first wired communication protocol, wherein the second wired communication protocol is different from the first wired communication protocol.

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.

To implement the handover of a mobile terminal with a simple method by transferring an Ethernet frame via a ring network.SOLUTION: When a packet arrives at a device for adding, dropping, and passing packets in a ring network, 1 is stored in a first bit of the address location of an SRAM, 1 is stored in a fifth bit of the address location of the SRAM accessed using an intermediate address of a transmission source MAC address, and the packet is sent to a counterclockwise ring. When the packet arrives at a device for adding, dropping, and passing packets, 1 is stored in a first bit of an address storage area of the SRAM accessed using a lower address of the transmission source MAC address. When 1 is stored in the fifth bit of the address location of the SRAM accessed using the intermediate address of the transmission source MAC address, 1 meaning duplicate lower address storage is stored in a third bit location of the address location of the SRAM accessed using the lower address of the transmission source MAC address.SELECTED DRAWING: Figure 1

A modular machine automation system comprises a server module and a plurality of client modules. Each client module includes a client module housing with a first client module connection side, which includes a first client signal transfer unit with a first client signal transmitter and a first client signal receiver; a second client module connection side, which includes a second client signal transfer unit with a second client signal transmitter and a second client signal receiver; and a client bus connection unit.A client signal coupling unit in the client bus connection unit of the client module is designed to determine, in an initialization mode, which client module connection side is connected to a server module connection side directly or via one or more additional client modules, in order to switch to a first operating mode when the first client module connection side is coupled to the server module connection side directly or via one or more additional client modules, and to switch to a second operating mode when the second client module connection side is coupled to the server module connection side directly or via one or more additional client modules.

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 present invention discloses a rail transit door system network architecture and network communication method. All gate control units in the door system are chain-connected, and the gate control units at the head and tail are connected to real-time Ethernet switches to form a ring network topology to complete the interaction of control information and maintenance information; the gate control unit and the two real-time Ethernet switches respectively form two external network planes, and the two external network planes are mutually redundant; the real-time Ethernet switch is connected to TCMS, and all gate control units communicate directly with TCMS. The DCU of the present invention is standardized, and there is no need to distinguish between master and slave DCUs. The DCU can communicate directly with TCMS; the network architecture has ring network redundancy, link redundancy and bypass relay technology, which can prevent two-point failures and has high reliability.

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.