569results about "Loop networks" patented technology

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 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.

An energy storage system of disclosed technology include: a plurality of battery racks, each of the plurality of battery racks structured to support a plurality of battery cells; a management controller configured to be in communication with and to control the battery cells in the plurality of battery racks; and one or more connection lines configured to connect the management controller to the plurality of battery racks to form a network.

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 provides a ring network communication redundancy control method and device, electronic equipment and a readable storage medium, and relates to the field of vehicle-mounted communication. The method comprises the steps that nodes in a vehicle-mounted looped network system can be controlled to detect the abnormal state of an Ethernet link and broadcast the abnormal state based on CAN communication, a master control node can judge whether to switch a redundant link or not according to the abnormal state of the link related to each node, and if switching is needed, a switching control message is broadcast based on CAN communication; and each node can adjust the port setting according to the switching control message. Ethernet link detection and redundant link switching control are realized based on Ethernet communication, and the functions of judging whether to switch the link according to the abnormal state of the link and broadcasting the switching control message are integrated in the master control node, so that the requirements on nodes except the master control node are relatively low; therefore, the requirement of a vehicle-mounted ring network communication redundancy control scheme on node hardware resources can be reduced, and compared with an existing scheme, the vehicle-mounted ring network communication redundancy control method is simpler and easier to implement and higher in usability.

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.

The invention discloses a message transmission method, device, equipment and system and a storage medium, and relates to the technical field of communication. Taking first network equipment to execute the method as an example, under the condition that a network fault occurs in a ring network, the first network equipment receives a first message, the first network equipment is any network equipment adjacent to the occurrence position of the network fault in the ring network, and the ring network comprises a blocking ring breaking point used for blocking message transmission; a first outer-layer tunnel message header is packaged for the first message to obtain a second message, the first outer-layer tunnel message header indicates that the second message is transmitted based on the first tunnel, and the message transmitted by the first tunnel is not blocked by the blocking damage point; and transmitting the second message based on the first tunnel. According to the method, the first message is not influenced by a network fault, and can cross over a blocked ring breaking point, so that faster ring network path switching is realized, message packet loss caused by the network fault is reduced, and the influence of the network fault on service performance is effectively reduced.

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 discloses a double-loop network communication method, which comprises the following steps that: a first communication port of a host sends a call message; a first slave receives the call message, quickly forwards the call message to a second slave, switches to a slow forwarding mode, forwards a local message to the second slave; the second slave quickly forwards the call message to a third slave, and switches to the slow forwarding mode; forwarding the local message to a third slave, and forwarding the received local message to the third slave until the calling message and the local message of the slave are returned to a second communication port of the host; the second communication port of the host sends a call message, the Nth slave receives the call message and quickly forwards the call message to the (N-1) th slave, the Nth slave is switched to a slow forwarding mode, a local message is forwarded to the (N-1) th slave, the (N-1) th slave quickly forwards the call message to the (N-2) th slave, the Nth slave is switched to a slow forwarding mode, and the local message is forwarded to the (N-2) th slave. And forwarding the received local message to the (N-2) th slave, and returning the calling message and the local message of the slave to the first communication port of the host.

In a battery monitoring system, when a communication interface circuit receives an output command for monitoring data of each cell according to an instruction from a battery management circuit, the output commands are simultaneously transmitted from a third connection port and a fourth connection port of the communication interface circuit to both of a first connection port of a group and a second connection port of the group in a battery pack unit group, communication control is performed such that the output commands are transmitted to all of plural battery pack units, and communication data output from each of the plural battery pack units is output from both of the connection ports.

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 discloses a pump station control system and method based on a red mine system, and belongs to the technical field of coal mine communication control. The pump station control device comprises an underground master station, a plurality of substations and a plurality of pilot boxes used for remote control, the substations and the master station are used for collecting various parameters of the pump station, the pilot boxes are used for controlling start and stop of the pump station and various switching values, and the master station, the substations and the pilot boxes are connected with a switch of an industrial looped network through a communication module. Data exchange with a ground centralized control center is realized; the pump station control system further comprises a mobile inspection terminal carrying a mine red system, and the substations, the master station and the pilot box are all provided with NFC tags. According to the pump station control system and control method based on the Hong mine system, data real-time online collection, data processing, remote control, remote inspection of the pump station system and intelligent man-machine information interaction are achieved through the Hong mine system and the pump station control device, the intelligent degree of a mine is improved, and a solid foundation is built for intelligent construction of the mine.

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 invention discloses a security protection method for cascade mutual trust of industrial Ethernet switches. A communication path is ensured to be clear and controllable through physical connection and logic networking configuration; a unique identity label is provided for the switch by using the information label of the main device, and illegal access is prevented; a management port is monitored in real time through an equipment load security mirror image, and illegal equipment is found and processed in time; constructing a logic security chain model, and realizing a unified mutual trust mechanism of network equipment; and distributed decentralized storage is carried out by adopting a block chain technology, so that the data is ensured to be safe and cannot be tampered. The system comprises a device connection configuration module, a main device information label generation module, a trusted edge device access management module, a device load security mirror image management module, a device security portrait and logic security chain construction module, a data storage and security module and the like, provides comprehensive security protection for industrial Ethernet switch cascading, and ensures network stability and security.

Autonomous vehicles including sensors and electronic control units (ECUs) that communicate via ring networks are disclosed. A system includes an ECU of an autonomous vehicle that includes an ECU network interface. The system includes a plurality of sensors disposed on the autonomous vehicle, and each of the plurality of sensors includes a respective sensor network interface. The system includes a plurality of network links communicatively coupling the plurality of sensors to the ECU network interface of the ECU via the respective sensor network interface in a ring configuration.

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 discloses a node, an industrial communication network and a data transmission method, and relates to the technical field of industrial communication, the node is located in a first ring network, and ports of the first ring network node comprise a first port and a second port; wherein the second port is a redundant port of the first port; a mapping forwarding relationship of forwarding data exists between the second port of the first ring network node and at least one port of the second ring network node; and the first looped network node performs data transmission with at least one port of the second looped network node through the second port and the mapping forwarding relationship. According to the embodiment of the invention, the second port of the first looped network node and at least one port of the second looped network node carry out data transmission through the mapping forwarding relation, and after the communication path of the first looped network or the second looped network breaks down, data transmission can still be normally carried out between the first looped network and the second looped network. The situation of data loss is avoided, and reliable transmission of data is ensured.

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 provides a private network operation system for an underground fusion network, and the system comprises a wireless network which obtains underground data through employing a mode of mixed networking of a pico-base station and a micro-base station, and is in communication connection with a transmission network; the transmission network networking is a ring network formed by forming a loop by the SPN equipment and the transmission equipment, and the transmission network networking is used for receiving underground data and transmitting the underground data to the core network networking; the core network is used for receiving the underground data sent by the transmission network, and the core network is in communication connection with the transmission network and the private network operation and maintenance management platform; and the private network operation and maintenance management platform is used for receiving the underground data sent by the core network networking and analyzing the underground data to monitor the underground environment. The problem that in the prior art, an underground monitoring system, a personnel positioning system and other information systems operate independently for a long time, and information cannot be shared is solved.

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.