20 results about "Linear topology" patented technology

The invention relates to the technical field of industrial automation control, in particular to an automatic equipment numbering system and method based on an industrial field bus. The method comprises the following steps: broadcasting an initial address seed through a main controller, and sequentially setting incremental addresses for equipment by adopting a chain transmission mechanism in linear topology; exclusive address fields are dynamically divided in the bifurcation topology, buffering is reserved, and hierarchical chain type numbering is started by branch head equipment; monitoring an equipment state in real time, recovering an offline address to an address pool for priority allocation of new equipment, and automatically expanding an upper limit of an address field when the address is exhausted; a conflict risk prediction model based on multi-modal data fusion is introduced, and the crossing from passive processing to active early warning is realized through adaptive adjustment of detection frequency and a preventive reset mechanism. According to the invention, plug-and-play deployment of equipment without manual intervention is realized, and the automatic management level and reliability of an industrial bus network are remarkably improved.

The application discloses a linear topology slave node synchronization method and system based on IEEE 1588 precision clock protocol, and the method comprises the following steps: step one, slave node 1 to slave node n-1 accepts PTP messages from a master node and forwards the PTP messages to the next level; step two, slave node 1 to slave node n-1 accepts PTP messages from slave node n and forwards the PTP messages to the previous level; step three, slave node 1 to slave node n takes an average value of round trip time to obtain an average link delay; step four, the master-slave clock offset is calculated according to the average transmission delay; and step five, dynamic frequency compensation calculation is performed. The application can increase the synchronization accuracy of the system and effectively reduce the clock deviation between nodes in the distributed system of the linear topology structure.

Embodiments of this application provide a radio frequency apparatus and a control signal transmission method. A specific solution is as follows: A radio frequency transceiver includes a primary control interface, and the primary control interface includes a first clock port and a first data port. Each radio frequency front-end module in at least one radio frequency front-end module includes a secondary control interface, and the secondary control interface includes a second clock port and a second data port. The first clock port is coupled to the second clock port of the at least one radio frequency front-end module through a control bus based on a daisy chain of a linear topology structure, and the first data port is coupled to the second data port of the at least one radio frequency front-end module through the control bus based on a daisy chain of a ring topology structure.

This invention discloses a linear multi-zero cavity duplexer based on a hybrid resonator. The duplexer comprises a rectangular hollow metal cavity, a common signal terminal at the top of the cavity, and two signal branches on either side. The branches employ a hybrid cascaded structure of single-mode and dual-mode metal resonators, forming a linear topology without cross-coupling. The dual-mode metal resonator can operate simultaneously in inter-plate coupling mode and coaxial mode. The resonant mode order is set by pre-setting the internal inter-plate distance, allowing each branch to generate two preset transmission zeros. This invention achieves a six-pole filtering response using only four resonant cavities, forming a dual passband and generating four preset transmission zeros, ensuring high quality factor and high channel isolation while achieving device miniaturization. This invention features a simple structure, easy fabrication, and independently and precisely adjustable coupling parameters, making it suitable for 5G / 6G communication, emergency communication, and UAV-borne high-performance miniaturized RF front-end applications.

The present application relates to the field of space photogrammetry and water conservancy surveying and mapping technology, and particularly relates to a Gao Fen 7 satellite water conservancy stereoscopic mapping and three-dimensional modeling method and system, comprising: using a water conservancy facility topology characteristic quantitative evaluation model to screen the same-track stereo images, and performing same-track stereo image splicing and fusion based on river linear topology, reservoir area surface topology and canal system node topology; dividing terrain subareas and establishing a terrain slope and RPC parameter correlation correction model. The present application takes water conservancy facility topology characteristics as the core driving force, runs through the whole process of image preprocessing, space three solution, image control layout, point cloud processing and three-dimensional modeling, replaces the precision control role of traditional dense image control points through topology constraint, solves the problems of insufficient image control precision, high image control point layout cost and low large scene modeling efficiency of existing satellite stereoscopic mapping in complex water conservancy topography, and realizes efficient and high-precision application of Gao Fen 7 satellite images in water conservancy engineering surveying and mapping.

The frequency doubling separator comprises a first photonic crystal structure PC1, a second photonic crystal structure PC2 and a first photonic crystal structure PC1, the first photonic crystal structure PC1, the second photonic crystal structure PC2 and the first photonic crystal structure PC1 are sequentially connected from top to bottom to form a three-layer heterostructure, the PC2 is located in the middle layer, and the PC1 is located in the middle layer. An upper interface for transmitting fundamental frequency light (FW) is formed on the contact surface of the upper layer PC1, and a lower interface for transmitting second harmonic (SHW) is formed on the contact surface of the lower layer PC1. A PC1-PC2-PC1 three-layer heterostructure is adopted, nonlinear frequency conversion and wavelength demultiplexing functions are integrated on a single chip, the device size is remarkably reduced, the system integration degree is improved, and the urgent requirement of a modern optical communication system for compact integration is met; a body defect design is also introduced, a second harmonic emission port is flexibly adjusted, and the practicability is enhanced; the topological structure is insensitive to defects, inhibits backscattering, improves stability, and provides a high-performance and high-reliability solution for the fields of optical communication and the like.

This invention discloses a wireless link self-healing method and apparatus for linear topologies, relating to the field of wireless communication technology. The method and apparatus employ a physical frequency band isolation architecture with segmented inter-frequency main chain and globally independent backup frequencies. Through three core mechanisms—dual-dimensional disconnection judgment, distributed self-healing activating only the nodes at the two ends of the disconnection, and oscillation-free recovery from power-off snapshots—it solves the technical problems of existing chained networks, such as multi-hop performance avalanche, severe co-channel interference, network oscillations after large-scale power outages, and network-wide paralysis due to continuous failures of multiple nodes. This invention supports automatic link reconstruction in scenarios of single-node failure, continuous multi-node failure, and simultaneous disconnections at multiple locations. After the faulty node recovers, the original topology can be accurately restored based on pre-stored link snapshots, maintaining high throughput, low latency, and low interference transmission throughout.

The invention belongs to the technical field of computational mechanics relating to nonlinear topological optimization, and particularly relates to an ultra-high-speed impact-resistant structure design optimization method based on an explicit topological optimization framework, in a framework based on a mobile deformable component method, an upper limit and a lower limit need to be set for a design variable of the mobile deformable component method; then, the genetic algorithm randomly generates multiple groups of candidate design variables, and an initial structure configuration is obtained; the configuration is then converted into a smoothed particle fluid dynamic model, and corresponding boundary conditions are applied; then obtaining structural response of mass and displacement, and constructing an objective function and related constraint conditions thereof; and finally, according to a design variable updating criterion of a genetic algorithm, applying crossover and mutation genetic operation so as to generate a next-generation candidate design variable, and after iteration is finished, selecting an optimal individual as a final configuration according to a target function and a constraint condition. According to the method, the number of design variables is extremely small, so that optimization design of the ultra-high-speed impact-resistant structure becomes possible.

The invention discloses a three-phase power distribution network topological structure identification method, and belongs to the technical field of power grid topological structure identification. The three-phase power distribution network topological structure identification method comprises the following steps: establishing a nonlinear constraint equation which takes a branch switch state, a node voltage and a branch current as decision variables through a relation among voltage, current and power; establishing an objective function by minimizing the residual error between the measured value and the estimated value; establishing a three-phase power distribution network nonlinear topology identification model based on the nonlinear constraint equation and the objective function, and performing linearization processing on the nonlinear topology identification model; and solving the topology identification model after linearization processing to obtain a three-phase power distribution network topology identification result. By adopting the three-phase power distribution network topology structure identification method, three-phase power distribution network topology identification under normal operation and network reconstruction is realized, and the three-phase power distribution network topology structure identification method is suitable for an unbalanced power distribution network; the problem of low identification precision of the topological structure of the three-phase power distribution network is solved.

The application discloses a kind of wideband near field communication codebook design methods for linear topology scene, comprising: constructing the space geometry model for describing relative position relationship, by the angle domain time delay parameter solved out to multi-channel time delay network, angle domain control code word that establishes the initial splitting morphology of beam cluster is generated;Based on space geometry model and angle domain control code word, generate the distance-angle joint control code word that beam focal point is attracted and locked to the preset linear track;In the linear service interval of target coverage, a series of discrete sampling points are determined, for each sampling point, generate the special joint control code word matched with sampling point space position, finally based on special joint control code word constructs complete wideband near field communication codebook.The application can solve the beam focusing misalignment caused by near field spherical wave and wideband beam splitting effect together, and the transmission delay problem caused by the beam management complexity is too high.

The invention discloses a broadband near field communication codebook design method for a linear topology scene, and the method comprises the steps: constructing a space geometric model used for describing a relative position relation, and generating an angle domain control code word which determines an initial splitting form of a beam cluster through configuring a calculated angle domain time delay parameter to a multi-channel time delay network; based on the space geometric model and the angle domain control code word, generating a distance-angle combined control code word which pulls and locks a beam focus to a preset linear track; in a linear service interval covered by a target, a series of discrete sampling points are determined, a special joint control code word matched with the spatial position of the sampling point is generated for each sampling point, and finally a complete broadband near field communication codebook is constructed based on the special joint control code words. According to the invention, the problems of beam focusing misalignment caused by near-field spherical waves and a broadband beam splitting effect and transmission delay caused by too high beam management complexity can be solved.

The invention discloses a multimodal transport collaborative management and control system, method, equipment and medium based on a sectional virtual-real combined sand table, and the system comprises a virtual sand table subsystem which is used for carrying out the three-dimensional dynamic visualization of a space intensive operation link; the physical sand table subsystem is used for carrying out physical state visualization on the linear topology transportation link; the cross-sand table object seamless migration engine is respectively communicated with the two subsystems and is configured to map and synchronize the state of the transportation object in the virtual sand table to the physical sand table when the space intensive link operation is finished, and trigger the physical visualization of the transportation process; and when the linear transportation link meets the migration condition, mapping and synchronizing the state of the linear transportation link in the physical sand table to the next virtual sand table, and triggering three-dimensional visualization of the next operation link. Compared with the prior art, continuous and visual collaborative management and control of the whole process of multimodal transport are realized through cooperation of the sectional virtual-real combination sand table and the migration engine.

The invention discloses a distributed IO system supporting hot plugging, and relates to the technical field of industrial automation, the system comprises a PLC and at least two distributed IO sites connected in series at the downstream of the PLC through a network cable in a linear topology, each distributed IO site comprises a network module, a network adapter and an IO module, the network module is connected in series with the linear topology through the first network interface and the second network interface. When the network module is plugged with the network adapter, data exchange is carried out between the first network interface and the network adapter; when the network module is not connected with the network adapter in an inserted mode, working electric energy is obtained from a network cable connected to the first network interface, and transparent data forwarding is executed between the first network interface and the second network interface, so that communication between other distributed IO sites located on the downstream of the network module and the PLC is kept uninterrupted, and the communication efficiency is improved. The problem that whole-line shutdown is needed when a traditional distributed IO site is maintained is solved.

The invention discloses a linear dielectric waveguide filter based on patch type frequency dependent coupling, which realizes multi-transmission zero control by arranging a metal patch on a dielectric substrate between adjacent resonators and utilizing a frequency dependent coupling principle. The antenna specifically comprises a resonator group, a metal patch group and a feed port which are arranged on a dielectric substrate, the position of the corresponding transmission zero point can be independently controlled by adjusting the geometric parameters of the metal patch, and mutual interference is avoided. The structure adopts a linear topology, does not need cross coupling, significantly reduces the size, and forms four independent and controllable transmission zeros. The technical problems that a traditional filter is limited in transmission zero number, complex in structure and large in size are solved.

The application provides an event response method, system, device and medium based on edge computing and decision, the method comprising: obtaining running data and environment data of a target system; performing double-channel feature fusion on the running data and the environment data, filtering out background interference through state space segmentation to separate out an event abnormal high-risk area; inputting a feature matrix corresponding to the event abnormal high-risk area into a dynamic decision network to generate a dynamic constraint boundary of a response candidate strategy; calculating a multi-dimensional trend difference of the running data using a time series difference operator, filtering the multi-dimensional trend difference using a double threshold to separate out strong correlation points and weak correlation points, and identifying linear topological structures of the strong correlation points and the weak correlation points using a sequence topological analysis algorithm to extract time series direction features; drawing a decision evolution reference line in a state space according to the time series direction features; and solving two space-time intersection points of the decision evolution reference line and the dynamic constraint boundary as a starting trigger point and a termination cutoff point of event response execution, respectively.

The invention belongs to the technical field of offshore wind power, and particularly relates to a linear topological structure of 5MW wind generating set control equipment. According to the scheme, a linear topological structure is adopted, the control devices are divided according to functions and are connected through communication modes such as buses or optical fibers, the advantages of being simple and efficient are achieved, the coupling degree between the devices is reduced, and the overall reliability of the system is improved. Even if a certain component breaks down, the whole system cannot be seriously influenced, rapid positioning and repairing are facilitated, and the reliability of the control system is improved.

The present application belongs to the technical field of computational mechanics involving nonlinear topology optimization, and particularly relates to a super-high-speed impact-resistant structure design optimization method based on an explicit topology optimization framework. In the framework based on the moving morphable components method, upper and lower limits need to be set for the design variables of the moving morphable components method. Then, the genetic algorithm randomly generates multiple sets of candidate design variables, and an initial structure configuration is obtained therefrom. The configuration is then converted into a smoothed particle hydrodynamics model, and corresponding boundary conditions are applied. Then, the structure response of mass and displacement is obtained, and an objective function and related constraint conditions are constructed. Finally, according to the design variable update criterion of the genetic algorithm, cross and mutation genetic operations are applied to generate the next generation of candidate design variables. After the iteration ends, the optimal individual is selected as the final configuration according to the objective function and the constraint conditions. The present application has a small number of design variables, making it possible to optimize the design of super-high-speed impact-resistant structures.

The invention relates to the technical field of industrial control, in particular to a linear topology communication management system. The linear topology communication management system provided by the invention comprises a main node and a plurality of sub-nodes: the main node is connected with each sub-node through a single physical channel to realize half-duplex message frame communication, and the message frame comprises an addressing frame and a data frame; the main node is used for realizing incremental addressing of each sub-node based on linear topology and a self-defined addressing frame; and the main node is used for realizing step-by-step single-point access and broadcast of each sub-node based on a data frame with self-defined content, and realizing two-way transmission of data. According to the method, the determined child node access address is provided for the main node through the linear topology and the self-defined addressing frame, communication can be achieved only by relying on single full-duplex electrical connection between the two nodes, a hardware link and a topological structure are effectively simplified, and the method is particularly suitable for application scenes with low cost and strict limiting conditions.

The invention discloses a control system, method and equipment based on a time sensitive network. According to the invention, the time-sensitive network processing units are arranged in the main controller and each distributed field equipment node, and the operations of copying, multi-path forwarding and repeated frame identification and selection are performed on the target data frame, so that parallel redundant paths are logically established for system communication. Therefore, when any node or any physical link in the system has a single-point fault, key data can still be reliably transmitted through a path which is not influenced by the fault, so that the system-level paralysis risk of failure of one point and interruption of the whole line in a traditional linear topology network is effectively avoided; and the availability and reliability of the high-protection-level control system in a harsh industrial environment are obviously improved. The mechanism realizes communication redundancy on the premise of not changing the original linear physical wiring topology, and has the advantages of high reliability and low cost.