104 results about "Synchronous network" patented technology

The invention relates to the technical field of pumped storage power station multi-sensor monitoring network time-space synchronous measurement, in particular to a pumped storage power station multi-sensor safety monitoring system, which comprises a sensor data acquisition module, a time-space synchronous network module, a data calibration module, a dynamic association model construction module, a multi-dimensional data fusion module and a graded early warning module. The dynamic correlation model building module simulates dynamic response of seepage pressure and surrounding rock strain through a fluid-structure interaction equation and a discrete element digital twinborn model, updates fracture permeability boundary conditions in real time, and extracts cross-sensor space-time correlation characteristics by adopting a convolutional long-short-term memory network improved by a multi-head attention mechanism. According to the method, the real-time early warning precision of abnormal events and the reliability of structural health assessment in the complex hydraulic and mechanical coupling environment are improved.

The invention discloses a distribution network cable fault early warning method and system based on multi-terminal synchronous traveling wave detection, and relates to the technical field of cable fault detection. The method comprises the following steps: deploying at least three synchronous detection ends at each branch end point of a cable, and synchronously triggering a sampling rate; establishing a master-slave synchronous network, and performing frequency spectrum correction on the acquired data; constructing a real-time correction model based on the data of the distributed temperature sensor; extracting early fault features, and constructing a three-dimensional feature tensor; carrying out preliminary diagnosis on edge nodes and carrying out feature classification by adopting a transfer learning optimization network; and in combination with the cable load rate and the environment temperature and humidity, an early warning threshold self-adaptive model based on fuzzy PID (Proportion Integration Differentiation) is established. Through multi-terminal cooperative perception and intelligent analysis, the scheme converts a fault processing mode from passive first-aid repair to active defense, improves the manual inspection efficiency of the distribution network cable, and finds early fault hidden dangers in advance.

The invention discloses a method for establishing a small signal analysis model of a hybrid synchronous new energy networking converter. The method comprises the following steps: determining a control strategy of the hybrid synchronous networking converter; establishing an s-domain mathematical model under a dq rotating coordinate system, and based on the hybrid synchronous network construction type converter control strategy, when power synchronization control is subjected to small disturbance, linearizing an active control loop to obtain a small signal model of active power and a small signal model of a synchronization loop in the hybrid synchronous control strategy; when the synchronous loop small signal mode control system is subjected to small disturbance, determining a small signal model of each variable and a small signal matrix model of voltage and current double-closed-loop control, establishing a relation between the internal potential and the output power, and performing linearization; determining a small signal model of the hybrid synchronous networking converter; and constructing a transfer function between the small interference signal of the output phase of the active power loop and the small interference signal of the potential phase in the converter.

The invention provides a digital clock remote metering method based on network delay suppression, which comprises the following steps of: constructing a layered synchronous architecture, deploying a main clock source, a plurality of regional clock servers and a plurality of terminal devices, connecting the plurality of regional clock servers with the main clock source through optical fiber special lines to obtain reference time, each regional clock server is connected with a plurality of terminal devices through a 5G / industrial Ethernet to form a three-level synchronous network; rTT data of the terminal device and a regional server are obtained through bidirectional timestamp interaction, and message screening is carried out according to a preset rule; calculating a final time delay compensation value by adopting a mixed time delay compensation algorithm, and calibrating a terminal clock by adopting the final time delay compensation value; and adopting a time selection algorithm to obtain an optimal reference source for data synchronous analysis. According to the invention, the time deviation problem between the current time indicating value of the digital clock and the standard time and the data synchronization analysis problem can be solved.

The invention provides a ground satellite signal distributed cooperative processing method and system, and relates to the technical field of communication, and the method comprises the steps: extracting a user MAC address hash value, an emergency priority code and a spectrum occupancy matrix from a synchronous network, and generating a triple feature vector; transmitting the triple feature vectors through a double-layer Mesh network, selecting two reference target points with fixed geographic coordinates on the ground of the disaster area, obtaining three-dimensional coordinates of the reference target points, and constructing a space reference straight line; according to the real-time position data of each node, calculating a vertical projection distance from each node to the space reference straight line, and generating a node offset parameter; and dynamically generating a refraction correction coefficient of the signal propagation path based on a comparison result of the node offset parameter and a preset threshold value, and when the offset exceeds the threshold value, increasing a correction weight by adopting a piecewise linear interpolation method. According to the invention, high-reliability and low-delay emergency communication coverage can be realized.

A method for detecting asymmetric path delay changes in a synchronisation network comprises: monitoring a first path delay and a second path delay over a first sample period and a second sample period, wherein the first path delay is a reported time taken for a first packet transmitted by a first node of the network to be received by a second node of the network, and the second path delay is a time taken for a second packet transmitted by the second node of the network to be received by the first node of the network; determining that a change in one or both of the first and second path delays between the first sample period and the second sample period exceeds a first threshold; and determining whether the change in one or both of the first and second path delays is an asymmetric path delay change.

The invention provides an autonomous synchronous network construction control method for parallel operation of a network construction type energy storage converter. The method comprises the following steps: collecting a grid-connected point voltage and a grid-side current of the energy storage converter; performing active power adjustment according to the grid-connected point voltage, the grid-side current and an active power instruction to obtain an output voltage phase; determining an adjustment deviation according to the grid-side current, the energy storage filter parameter, the first voltage instruction and the second voltage instruction; adjusting the adjustment deviation to obtain a virtual internal potential amplitude; and according to the virtual internal potential amplitude, the output voltage phase, the grid-connected point voltage and the grid-side current, voltage regulation, current regulation, coordinate system transformation and space vector modulation are carried out in sequence, and a driving signal required by control of the grid-forming type energy storage converter is generated. According to the method provided by the invention, the output voltage is adjusted by depending on the output capability of the energy storage converter, and the voltage adjusting capability is improved while the stable operation of the energy storage converter is maintained.

The disclosure provides a shelf label communication method based on a synchronous network, a shelf label system and a computer device, the method including: an electronic shelf label establishes a first timing task of a timer when receiving a timing service instruction; determines a timing duration of the first timing task based on a time difference between current local system time when the timing service instruction is received and the instruction execution system time, and starts the first timing task; the electronic shelf label cyclically calibrates a current timing duration in the first timing task based on the periodically received base-station system time, to obtain the calibrated current timing duration. In the disclosure, by sending timing service instructions to the batch of electronic shelf labels in advance and periodically and cyclically calibrating the local system time of the electronic shelf labels, the batch of electronic shelf labels can execute corresponding services almost simultaneously at the time specified by the server, thereby meeting the users' requirements for the batch of shelf labels to quickly execute the service in the specified time.

The embodiment of the invention provides a convergence gateway of a TSN network and an AUTBUS network and a terminal node of the AUTBUS network. The convergence gateway comprises a TSN module and at least one CN node module of the AUTBUS network, the fusion gateway is connected with the TSN node through a TSN module in the fusion gateway; the CN node module of the fusion gateway is connected with a plurality of terminal TN nodes through an AUTBUS bus; the CN node module of the fusion gateway performs phase alignment according to the time mark provided by the TSN module at fixed time intervals, so that the phases of the AUTBUS network and the TSN network are kept synchronous; and a CN node module of the AUTBUS network is provided with a storage and forwarding model and a flow scheduling mechanism which are the same as those of the TSN network, and is used for scheduling passing messages. According to the embodiment of the invention, the time synchronization of the TSN module of the convergence gateway and the CN node module of the AUTBUS network is realized, the CN node and the TSN node of the AUTBUS adopt the same store-and-forward model and flow scheduling mechanism, and the time certainty of the data flow between the TSN node and the TN node in the end-to-end communication is realized.

A self-organizing mesh network system is disclosed, comprising: at least one master node generating a timing reference signal; a plurality of regular nodes deriving time synchronization from the timing reference signal; and a wireless medium for communicating location and timestamp information among the plurality of regular nodes, The plurality of regular nodes may be configured to each use communicated location and timestamp information of nearby nodes to independently generate a location map of the nearby nodes. The plurality of regular nodes may be configured to accept an additional regular node. The plurality of regular nodes may be configured to allow a node of the plurality of regular nodes to exit the plurality of regular nodes. The plurality of regular nodes may each use communicated location and timestamp information of the plurality of regular nodes to independently generate a location map of each of the plurality of regular nodes.

The application relates to the technical field of wireless Mesh networks, and discloses a synchronization method for a wireless Mesh network, wherein the Mesh network comprises a plurality of Mesh network nodes connected to each other, the synchronization method comprises the following steps: obtaining external relative execution time in a Mesh control message received by a Mesh network node; obtaining internal relative execution time saved by the Mesh network node; and correcting the internal relative execution time in the case that the external relative execution time is less than the internal relative execution time. The synchronization operation of the Mesh network node is realized by using the relative time mode, the Mesh network node is clocked by using an internal crystal oscillator, the device of the Mesh network node does not need to quickly re-synchronize the network clock after being powered off and then powered on, and the accuracy of the synchronization operation of the device of the Mesh network node in the Mesh network can be improved. The application further discloses a synchronization device for a wireless Mesh network and an electronic equipment.

Representative apparatus, method, and system embodiments are disclosed for configurable computing. In a representative embodiment, a system includes an interconnection network, a processor, a host interface, and a configurable circuit cluster. The configurable circuit cluster may include a plurality of configurable circuits arranged in an array; an asynchronous packet network and a synchronous network coupled to each configurable circuit of the array; and a memory interface circuit and a dispatch interface circuit coupled to the asynchronous packet network and to the interconnection network. Each configurable circuit includes instruction or configuration memories for selection of a current data path configuration, a master synchronous network input, and a data path configuration for a next configurable circuit.

The invention discloses a network equipment firmware hot standby method, electronic equipment, a storage medium and a program product, and relates to the technical field of computer networks, and the method comprises the following steps: monitoring the running state of main firmware; the main firmware runs in main network equipment; when the running state of the main firmware meets a switching trigger condition, switching the standby firmware, so that the standby firmware takes over the service of the main firmware according to the network management information; the standby firmware runs in standby network equipment; synchronizing network management information between the main firmware and the standby firmware; and notifying that the physical address of the target object is changed into the physical address of the standby network equipment, so that the target object forwards the network traffic to the standby network equipment. According to the method, a cross-device firmware hot standby mechanism is adopted, the main firmware is operated in the main network device, the standby firmware is operated in the standby network device, the limitation that only local firmware redundancy is supported in a related scheme is broken through, seamless switching of the main firmware and the standby firmware can be achieved, it is ensured that services are not interrupted, and the availability and stability of a network system are improved.

The invention relates to a global vector CSN transaction snapshot generation device and method of a shared storage multi-Master cluster database system. The device comprises a multi-Master CSN generation module which is used for generating a multi-Master cluster mode CSN serial number with a node identifier when a transaction is submitted and binding a transaction number to a CSN LOG; the CSN BOC sending module asynchronously broadcasts the packaged transaction number and CSN serial number message packet to other nodes of the cluster; the CSN BOC receiving module is used for receiving the message packet, recording the message packet to a local CSN LOG and maintaining a global CSN vector (storing the latest CSN of each node according to the node number); and the vector CSN snapshot generation module generates a snapshot by copying a global CSN vector and updating the CSN of the node, and is used for data line snapshot isolation visibility check. According to the method, the limitation of a traditional CSN single node is broken through, the problem of unified description of a multi-Master cluster cross-node transaction sequence is solved, synchronous network IO loss is avoided through asynchronous message and memory operation, and cluster transaction visibility check efficiency and service concurrency performance are remarkably improved.

Systems, methods, and circuits are provided for handling non-synchronous interrupts in a time-synchronous network. In one example, a method includes, for a primary device, monitoring a communication channel during a series of configured packet time slots. Respective packet time slots in the series are mapped to respective secondary devices, and consecutive packet time slots in the series are separated in time by respective inter-packet times. The inter-packet times do not overlap any packet time slot. The method includes monitoring the communication channel during at least one common asynchronous interrupt time slot occurring during a respective inter-packet time, and generating one or more control signals based on signals received during the packet time slots and the at least one common asynchronous interrupt time slot.

Various embodiments are provided for dynamically reconfiguring radio access network (RAN) functionality between edge and cloud computing environments. A RAN-enabled edge server deployed at an edge location is configured to perform a set of distributed unit (DU) functions for a radio-based network, while a server hosted at a regional data center of a cloud provider network is configured to perform a set of core network functions for the radio-based network. The system monitors availability of the core network functions at the edge location and determines that the set of core network functions provided by the server at the regional data center is unavailable. In response to determining that the core network functions are unavailable, the RAN-enabled edge server is dynamically reconfigured to perform the set of core network functions.

The invention discloses a mutual impedance-based power system synchronous network division method, which is characterized in that a simplified node admittance matrix of a power system is constructed, that is, only line reactance and transformer reactance are considered when the matrix is constructed, given values are set for the line reactance and the transformer reactance, and parameters of other equipment do not need to be considered; the mutual impedance of any two nodes is determined based on the node admittance matrix, and the electrical coupling strength between the nodes is evaluated according to the mutual impedance, so that the nodes are divided into different synchronization networks, and compared with the prior art, the point-by-point search efficiency is higher.

The invention discloses an SNN learning accelerator for ECG monitoring, which comprises a register configuration module, an asynchronous global control module, an asynchronous neural network control module, an asynchronous binary classification CNN module, an asynchronous quadruple classification SNN module, an asynchronous weight updating module and a memory management module, and is characterized in that firstly, a circuit corresponding to the accelerator constructs a double-layer dynamic network; layered dynamic power consumption management: selectively activating a high-precision secondary anomaly detection four-classification SNN network through a primary anomaly detection two-classification CNN network; secondly, the accelerator supports on-chip reasoning and efficient learning, and effectively eliminates ECG feature differences of different individuals on the premise of ensuring privacy security of user data; and finally, the circuit is controlled by using a pulse neural network and an asynchronous logic circuit, so that compared with a synchronous network, the power consumption is greatly reduced.

This disclosure provides a method of dynamically adjusting timing between adjacent networks in a synchronous network and an electronic shelf label system. The method includes: determining, by a server, a timing adjustment direction and a timing adjustment value of a current network based on an interference timing relationship diagram; generating, by the server, a corresponding adjustment task form the timing adjustment direction and the timing adjustment value of the current network, and sending the adjustment task to a master base station in the current network in the processing of each of the current networks, such that the master base station and a secondary base station dynamically adjust timing based on the adjustment task.

The invention discloses a grid connection method for a direct-current voltage synchronous grid construction type converter based on active disturbance rejection control, which belongs to the field of power grids and comprises the following steps: S1, designing a second-order expansion state observer; s2, calculating a vector orientation angle of a grid-connected converter control coordinate system; s3, converting the three-phase inductive current and the three-phase capacitive voltage into d-axis and q-axis direct current components under a dq coordinate system; s4, calculating a d-axis voltage outer ring instruction and a q-axis voltage outer ring instruction; s5, obtaining a d-axis inductive current inner loop instruction and a q-axis inductive current inner loop instruction under the dq coordinate system; and S6, generating a switching tube control signal of the grid-connected converter. By adopting the grid connection method for the direct-current voltage synchronous network-building type converter based on the active-disturbance-rejection control, the internal and external disturbance of the system is estimated and compensated on line through the extended state observer, and the method does not depend on an accurate system model and has relatively high robustness.

The invention discloses a synchronous network model asynchronization implementation method and device and a distributed system, and the method comprises the steps: initiating a service request through a sending thread pool, and recording task context information associated with the request after the request is sent; receiving a request result returned by the three-party server by using a receiving thread pool, performing reverse search in the task context information based on at least part of information carried in the request result, and matching a corresponding to-be-processed task; after successful matching, triggering an asynchronous callback function pre-registered by the user to complete service processing logic; based on a preset timing index structure, the overtime task is cleared, and the timing index structure at least comprises multiple pieces of task information sorted according to the task deadline. According to the invention, on the premise of not depending on underlying network control, asynchronous packaging of the synchronous interface is realized, and the throughput and response timeliness of the system are remarkably improved.

A self-organizing mesh network system is disclosed, comprising: at least one master node generating a timing reference signal; a plurality of regular nodes deriving time synchronization from the timing reference signal; and a wireless medium for communicating location and timestamp information among the plurality of regular nodes, The plurality of regular nodes may be configured to each use communicated location and timestamp information of nearby nodes to independently generate a location map of the nearby nodes. The plurality of regular nodes may be configured to accept an additional regular node. The plurality of regular nodes may be configured to allow a node of the plurality of regular nodes to exit the plurality of regular nodes. The plurality of regular nodes may each use communicated location and timestamp information of the plurality of regular nodes to independently generate a location map of each of the plurality of regular nodes.

The invention provides a hybrid access control method and an unmanned flexible ad hoc network system based on a multi-channel access structure. The method comprises the following steps: in an initialization stage, configuring a plurality of service queues and cache spaces thereof; performing synchronous network access processing on each subnetwork accessed to the network; taking a time period and a time slot as units, and performing multi-service queue scheduling by combining a whole-network broadcast time period, a multi-user polling time period and a multi-user competition time period; according to the system, the method is implemented in the layered and clustered elastic ad hoc network through an established multi-channel access structure. According to the invention, a layered and clustered networking architecture and a multi-channel access structure are adopted to realize each cluster frequency packet networking and flexible networking control, and a hybrid access control method is adopted to realize service classification scheduling, so that the problems of limited network scale and capacity bottleneck in the existing ad hoc network are solved, and the service performance of the ad hoc network is improved. And the requirements of large-scale networking, flexible clustering and partition service exchange of unmanned trunking communication are met.

The present invention provides a method for dynamic timing adjustment between adjacent networks for synchronous networks and an electronic shelf label system, the method including the steps of: a server determines a timing adjustment direction and a timing adjustment value of a target network based on an interference timing relationship diagram; the server generates a corresponding adjustment task based on the timing adjustment direction and the timing adjustment value of the target network, and in the process of processing each target network, sends the adjustment task to a primary base station in a current network, so that the primary base station and the secondary base station dynamically adjust timing according to the adjustment task. The present invention solves the problem of mutual interference between synchronous networks in adjacent stores or between different networks in the same store in the prior art due to the occurrence of time drift, and achieves the objective of mutual avoidance between networks by creating an interference timing relationship diagram between synchronous networks and performing dynamic adjustment of network timing based on the interference timing relationship diagram, thereby improving the communication stability of the synchronous network.

The embodiment of the invention discloses a hybrid synchronous networking converter control method based on virtual admittance optimization design and a related device. The method comprises the following steps: calculating instantaneous active power output by a system according to two-phase current of an output filter inductor and two-phase voltage of a power grid side capacitor; inputting the instantaneous active power and the obtained active instruction value into a power synchronization control loop and a phase-locked loop to obtain a hybrid synchronization control angle; inputting the two-phase voltage of the power grid side capacitor into the virtual admittance to obtain a two-phase reference current value; inputting the two-phase current of the output filter inductor, the two-phase voltage of the power grid side capacitor and the two-phase reference current value into an alternating current control loop to obtain a two-phase voltage control signal of the inverter; finally, converting the two-phase voltage control signal according to the mixed synchronous control angle to obtain a three-phase voltage control signal; and controlling on and off of the power device according to the three-phase voltage control signal. According to the invention, the steady-state stability of the grid-connected inverter under the weak power grid can be improved.

Representative apparatus, method, and system embodiments for configurable computing are disclosed. A representative system includes an interconnect network; a processor; and a plurality of configurable circuit clusters. Each configurable circuit cluster includes: a plurality of configurable circuits arranged in an array; a synchronous network coupled to each configurable circuit of the array; and an asynchronous packet network coupled to each configurable circuit of the array. A representative configurable circuit includes: a configurable computing circuit; and a configuration memory having: a first instruction memory storing a plurality of datapath configuration instructions for configuring a datapath of the configurable computing circuit; and a second instruction and instruction index memory storing a plurality of spoke instructions and datapath configuration instruction indexes for selection of a master synchronization input, a current datapath configuration instruction, and a next datapath configuration instruction of a next configurable computing circuit.

The application discloses a time delay dynamic compensation method, device, equipment, medium and system, and when the method is applied to a synchronous network transmission device, comprises the following steps: sending a first time synchronization signal to a synchronous network probe device; receiving a first time synchronization signal deviation returned by the synchronous network probe device; the first time synchronization signal deviation is obtained by measuring and deviation analyzing the first time synchronization signal by the synchronous network probe device, and the first time synchronization signal deviation is a difference value between a first theoretical time and a first actual time; sending a second time synchronization signal to the synchronous network transmission device; the second time synchronization signal is obtained by compensating the first time synchronization signal according to the first time synchronization signal deviation and a reinforcement learning model. The time delay dynamic compensation method is realized based on the reinforcement learning model, can detect a time delay asymmetry value in real time and automatically compensate.

The invention discloses a TSN management method and device based on software definition, a medium and equipment, and aims to realize centralized configuration and scheduling of a TSN switch by utilizing a northbound interface and a southbound interface through coordination of a centralized controller and the TSN switch. The centralized controller allows remote access and configuration parameter modification through a northbound interface so as to generate a specific configuration instruction and a scheduling strategy, and it is ensured that the network carries out efficient scheduling and bandwidth allocation according to real-time requirements; and the southbound interface is used for issuing the configuration instructions to the switch and executing functions of clock synchronization, network state monitoring, forwarding and control separation and the like. In this way, seamless connection between different network technologies is achieved, the certainty of data transmission is guaranteed, and meanwhile the data processing capacity and the utilization efficiency of bandwidth resources are improved.

The invention provides a method and device for establishing a synchronous network, and the method comprises the steps: determining a cooperative access point AP needing cooperative transmission, and enabling the cooperative AP to receive clock sources of boundary clocks BC from different reference timing reference clocks PRTC at the same time; and determining whether a target AP needing timing synchronization adjustment exists in the cooperative APs, and if yes, performing PRTC switching on a clock source of the target AP. According to the method and the device for establishing the synchronous network provided by the invention, the switching of the PRTC or the BC can be flexibly carried out in a Cell-Free scene, so that the high-precision synchronization requirement can be ensured between any intra-station and inter-station cooperative transmission APs (Access Points).

The invention provides a transmission rate adjusting method and device, equipment and a storage medium, relates to the technical field of communication, and is used for solving the problem of how to dynamically adjust the transmission rate by synchronizing the change of a network state in the transmission process of a data packet so as to reduce the transmission delay of the data packet. The method comprises the following steps: acquiring a historical transmission rate and a historical transmission time delay of transmitted data of a data packet in a corresponding historical transmission time period; then, determining a first transmission rate and a second transmission rate of untransmitted data of the data packet in the target transmission time period according to the historical transmission rate and the historical transmission time delay; and then, according to the first transmission rate, the second transmission rate and the historical transmission rate, determining a target transmission rate of a third part of data in the untransmitted data in the remaining time period of the target transmission time period.