88 results about "Cable network" patented technology

The invention provides a power distribution communication network optical cable fault prediction method and system based on machine learning. The method comprises the following steps: collecting Rayleigh scattering signals of a plurality of monitoring points along an optical cable; performing unsupervised learning on the optical cable adaptive reconstruction model, and calculating a reconstruction error matrix and an abnormal cumulative metric; constructing an optical cable network diagram, calculating a fault propagation probability matrix, predicting a future optical cable health index, and obtaining a future health index matrix; establishing an environment influence matrix, and adopting an optical cable environment adaptive filtering model; and based on the health index and the fault confidence coefficient matrix after filtering optimization, optical cable maintenance priority scores are calculated and sorted, and a self-adaptive inspection and maintenance strategy is formulated. According to the invention, high-precision monitoring, fault propagation prediction and environmental adaptability optimization of the health state of the optical cable are realized, and the intelligent level of operation and maintenance of the optical cable is improved.

The invention discloses a vehicle-mounted adaptive multi-mode intelligent switching power supply system, and belongs to the electrical field. The system comprises a diesel generating set, a dual-power-supply automatic switching control box, an uninterruptible power supply, a power battery pack, an alternating-current power distribution unit, a direct-current power supply, a direct-current power distribution unit, an alternating-current switching box, a master control panel and a power supply and distribution system cable network. The diesel generating set is used as a standby power supply and is automatically switched with the mains supply through the dual-power-supply automatic switching control box; the uninterruptible power supply realizes alternating current conversion and battery inversion backup; the direct-current power supply provides low-voltage direct-current output; the alternating-current and direct-current power distribution units realize electric energy distribution and control; the alternating current switching box realizes single-path input and multi-path output; and the master control panel centrally controls the start, stop and on-off of the system. The system has the characteristics of multi-mode self-adaption, intelligent switching, fault self-recovery and high reliability, and is suitable for stable power supply of vehicle-mounted equipment such as a military command vehicle.

The invention discloses an electromagnetic compatibility design method for a low-orbit satellite system, and aims to solve the problems that the traditional design focuses on a single machine, measures are isolated, and complex electromagnetic interference of the low-orbit satellite system cannot be handled. The method comprises the following steps: S1, analyzing a system-level electromagnetic environment and requirements, determining parameters, and identifying an interference source and a coupling path; s2, providing a layered and graded electromagnetic compatibility framework including platform and load isolation, power supply interference suppression, satellite-borne cable network optimization and grounding system construction; s3, performing frequency resource and signal integrity management, planning a frequency spectrum, and optimizing a clock and a digital circuit; s4, providing a software anti-interference and fault-tolerant mechanism, and realizing data verification, instruction voting and state monitoring; s5, performing on-orbit electromagnetic compatibility prediction; and S6, carrying out ground test verification. According to the method, a full-link design system is formed, interference risks are avoided in advance, and the operation stability and data reliability of the satellite in a complex electromagnetic environment are improved.

The present application relates to the technical field of optical cable joint box fault identification, and a kind of optical cable joint box fault identification method and system based on remote positioning, comprising: constructing fault parameter detection system, obtaining optical cable joint box set and spare optical cable joint box set, extracting an optical cable joint box from optical cable joint box set in turn, and the following operations are executed to the extracted optical cable joint box: obtain fault monitoring time period set, obtain area difference set and gas data set, obtain optimal optical cable joint box set, obtain the geographic coordinates of the optical cable joint box corresponding to the gas data, extract spare optical cable joint box from spare optical cable joint box set, replace the optical cable joint box, obtain replacement optical cable joint box, complete optical cable joint box fault identification based on remote positioning based on optimal optical cable joint box set group and replacement optical cable joint box set.The present application can improve the efficiency and accuracy of optical cable joint box fault detection, and guarantee the stable operation of optical cable network.

The utility model relates to a spaceborne interface expansion device and a satellite, through designing a spaceborne interface expansion circuit structure composed of four kinds of cables and two kinds of resistors, a device for circuit communication expansion of a signal bus hardware interface and connection change of a hardware interface channel is formed, the resistors at different positions are selected through welding and dismounting, and the communication expansion of the signal bus hardware interface is realized. According to the utility model, a bus interface line expansion function is realized, and the bus interface line expansion device is suitable for interface expansion of a dual-channel dual-wire CAN bus, an RS485 communication interface bus and a multi-wire LVDS / RS422 communication interface, and meets and adapts to the requirements of communication bus manufacturing of a whole-satellite cable network of an existing commercial satellite. The device is easy to manufacture, the difficulty in manufacturing the whole satellite cable network and the difficulty in wiring layout design of the cable network are reduced, the cost performance and the reliability are high, and a reliable, firm, convenient, rapid and attractive electrical connection structure is provided for the whole satellite-borne electrical link cable network.

A method of detecting a radio frequency signal leakage in a wired cable network may be provided. The method may be performed by a testing instrument. The method may include scanning wireless radio frequency signals in a test area. The method may also include receiving a wireless radio frequency signal in response to the scanning and extracting a bit pattern from the received wireless radio frequency signal. The method may further include comparing the extracted bit pattern with one or more predetermined bit patterns associated with corresponding one or more cable modems in the wired cable network. The method may additionally include indicating that the received wireless radio frequency signal is a leakage signal from the wired cable network in response to determining that the extracted bit pattern matches at least one predetermined bit pattern of the one or more predetermined bit patterns.

Data signals transmitted over cable networks experience degradation, such as frequency-dependent loss, spectral tilt, signal-dependent nonlinear noise, distortion, and compression, which vary with cable characteristics, temperature, electrical loading, and traffic conditions. The present invention relates to improving network performance by estimating cable signal-degradation using physics-based nonlinear system modeling and telemetry data and applying corrections to operating parameters of cascading amplifiers to offset the signal degradation, thereby improving overall network efficiency and reliability.

The invention provides a deep and far sea wind power plant unit arrangement and current collection line collaborative planning method, system and device, and a storage medium. The method comprises the following steps: S1, initializing a wind power plant layout and parameter definition; s2, establishing a collaborative optimization decision model; and S3, optimal scheme decision making. Original scattered cable networks are merged into a unified public corridor through active planning, the occupied area of submarine cable routing is greatly reduced, the requirement for intensive sea use is met, and remarkable social and environmental benefits are achieved; according to the method, the traditional single target optimization of generating capacity maximization is subverted, a collaborative decision-making model comprehensively considering the generating benefit and the submarine cable engineering cost is established, and the global optimization of economy is realized from the perspective of the full life cycle of a project; the regular and straight cable gallery greatly simplifies the laying construction of submarine cables, shortens the construction period, reduces the risks of crossing, bending and the like in the construction process, and facilitates the later operation and maintenance.

The invention provides a submarine optical cable information acquisition and fusion method based on a large model intelligent agent, and the method comprises the steps: collecting first submarine optical cable data from a plurality of submarine cable websites through a crawler technology, and converting the first submarine optical cable data into structural data through a preset large model; acquiring second submarine optical cable data from a submarine optical cable and an official website of an operator by using a multi-agent collaboration architecture, and converting the second submarine optical cable data into structured data; storing the submarine optical cable data of each data source in a graph database in a unified manner, and loading submarine optical cable nodes, login point nodes and related relational data from each data source to the graph database to obtain integrated data; and the integrated data diversity set is stored in a MongoDB database, and submarine optical cable information fusion is completed. Through a multi-agent cooperation mode, automatic processing of a complex website structure is realized, and the data acquisition efficiency is remarkably improved.

An electrical connection interface (10) comprising a set of connection elements for high-voltage power transmission cables (620, 630, 640) and intended for connection to an electrical cabinet (101). According to its main feature, the interface comprises a set of insulated conductive busbars (21, 22, 23, 31, 32, 33, 41, 42, 43), grouped in three busbar configurations (20, 30, 40); the busbars being fixed and rigid, they are configured to provide an electrical connection between the connection elements and the cabinet in such a way as to facilitate the interchangeability of the electrical cabinet. The invention also relates to a simplified method for connecting and disconnecting the electrical cabinet from a high-voltage power transmission cable network. Figure 1

The invention discloses an aerial optical cable environment sensing and state monitoring method based on a BOTDR (Brillouin Optical Time Domain Reflectometer), and relates to the technical field of computer and auxiliary equipment repair, and the method comprises the steps: collecting optical cable strain and temperature parameters, environment parameters and Beidou positioning data through an improved BOTDR sensor and an auxiliary sensor; performing denoising and format-unified preprocessing on the acquired data, correlating strain, temperature and environmental parameters through federal learning, generating a preliminary evaluation result of the optical cable state, and filtering invalid data; an edge and cloud cooperative processing architecture is constructed, fault features are extracted after the preprocessed data are received, and an optical cable health index is generated in combination with historical data; when the health index of the optical cable is lower than 60 points or sudden strain occurs, an early warning mechanism is triggered, BOTDR and Beidou data are integrated to position a fault point, a work order is automatically distributed, and a fault analysis report is pushed, the purposes of active early warning, accurate positioning and efficient operation and maintenance can be achieved, and stable operation of an aerial optical cable network is guaranteed.

The invention discloses a distributed reconfigurable wiring method, which specifically comprises the following steps of: 1, extending signal and power output to a plurality of positions in a spacecraft structure by taking an integrated electronic and power supply controller as a center and adopting a structure embedded FPC (Flexible Printed Circuit) mode for arranging a switching PCB (Printed Circuit Board) / switching cable; step 2, connecting the signal and the power to each single machine in a local area through a switching PCB / switching cable; 3, extracting required signals according to the requirement of a spacecraft local area arrangement single machine to form a switching PCB / switching line input; step 4, selecting an output connector and a node definition of the switching PCB / switching cable according to a local wiring optimization result; and 5, determining the design of the local cable network. The space is saved, the weight is optimized, the anti-interference performance is enhanced, and the electromagnetic compatibility optimization is more convenient.

The invention provides a cable network grounding research and judgment system and method based on topological transient characteristics, and the system carries out the research and judgment of a cable network grounding fault based on the transient zero-sequence current characteristics of a cable network. Transient zero-sequence current direction characteristics of a ground fault are converted into topological transient characteristics based on topology and amplitude comparison, the research and judgment process of the research and judgment method is triggered by a zero-sequence voltage abrupt change event of a bus, high-speed, synchronous and short-window acquisition is performed in a sampling process, then the transient amplitude in a first half wave is calculated, and topological characteristics are analyzed; according to the technical scheme, the method is specially used for capturing the earth fault instant electromagnetic transient process, and the problem that the accuracy of a transient signal positioning method at the present stage is not high can be solved.

The invention discloses an astronavigation cable network auxiliary wiring data processing method. The method comprises the steps of cable network structured data acquisition, branch connection relation simplification, main chain analysis, main chain arrangement, branch chain arrangement and marking. According to the method, structural data of a cable network can be analyzed to generate a 1: 1 wire harness two-dimensional diagram by obtaining the structural data. According to the method, the working efficiency and accuracy are remarkably improved, more standard, efficient and intuitive cable wiring diagram design and arrangement experience is provided for designers and operators, and the requirements of high-complexity spacecrafts such as satellites and manned airships for refined and standardized wiring can be met; and a powerful guarantee is provided for the reliability and the safety of a spacecraft electrical system.

This invention provides a method and system for automatic allocation of spacecraft cable network resources based on mixed-integer programming. The method includes: automatically extracting and statistically analyzing cable network resource demand and supply through structured data or manually entered data; pre-allocating cable network resources according to design requirements; importing cable network connector connections from the previous design; constructing the cable network resource allocation problem as a mixed-integer programming model, defining decision variables to transform complex design constraints such as resource matching, channel occupancy, and security isolation into mathematical constraints, and constructing an objective function with multiple objectives such as minimizing the total cable network length or reducing complexity; solving the model using mathematical programming methods; and performing rapid, local manual intervention and iterative optimization of the allocation scheme. This invention automates and intelligentizes cable network design, significantly improving design efficiency and accuracy, and supports rapid, local manual intervention and iterative optimization through resource freezing functionality.

The invention discloses an optical cable network optical intersection planning method, device and equipment, a medium and a computer program product, and the method comprises the steps: determining an uncovered road intersection based on the coverage range of stock optical intersection; for the uncovered road intersections, automatically planning the positions and levels of newly added intersection light intersections; determining an uncovered tail end grid based on the coverage range of the stock optical intersection and the coverage range of the newly added intersection optical intersection; and for the uncovered tail end grid, automatically planning the position and the level of the newly added roadside light intersection. According to the invention, on the basis of the coverage range of the stock light intersection, the newly added light intersection planning is carried out on the road intersection and the tail end grid which are still not covered, so that the comprehensive coverage of the road intersection and the tail end grid is realized, and the light intersection planning efficiency and accuracy are improved.

There is provided a cable network power unit (22) configured to generate a DC power signal periodically switching between a positive and negative voltage, the power unit (22) comprising a polarity switching module (66), current measuring device (60), and a controller (64), wherein the controller (64) is responsive to abrupt changes in current to trigger the polarity switching module (66) to switch polarity of the DC power signal, and thereby reset surge protectors in active devices such as nodes or amplifiers if they have triggered due to a power surge, for example from a lightning strike.

The application relates to the technical field of power distribution networks, and provides a power supply reliability evaluation method and device for a power distribution network, computer equipment, a readable storage medium and a program product. The method comprises the following steps: obtaining a topological sensitive correlation area according to a cable laying engineering file of the power distribution network and an underground cable network topology model; dividing the topological sensitive correlation area into multiple subareas, obtaining geological activity data of monitoring points in the multiple subareas within multiple set evaluation periods, and obtaining a surface subsidence sequence and a soil moisture content sequence corresponding to each topological sensitive element; when a slow deterioration trend of an electrical parameter of a power supply access point is detected according to power distribution network operation data, obtaining a target suspected disturbed topological path set according to the underground cable network topology model, the surface subsidence sequence corresponding to each topological sensitive element and the soil moisture content sequence, so as to obtain a power supply reliability evaluation result of the power distribution network. The method can improve the accuracy of the power supply reliability evaluation result.

This application relates to a method and system for intelligent cable network mapping based on urban road networks. The method includes: determining a road network distribution map within the coverage area of ​​the cable's origin and destination equipment coordinates; performing path calculations on the road network distribution map using a multi-dimensional path algorithm to obtain the cable's routing path; generating cable channels along the cable's routing path on the urban road network; and generating working wells on the cable channels according to preset parameters to form a cable network routing map within the coverage area of ​​the origin and destination equipment coordinates. This application cleverly utilizes the relationship between cable laying and the road network, automatically mapping the cable network based on the cable's origin and destination and road network information. It effectively digitizes cables with unclear laying records, reduces the time and effort required for manual on-site data collection, and solves the problem of high costs associated with collecting existing cable routing information.

The application provides an optical cable network natural language operation and maintenance method and system, belongs to the technical field of optical cable communication, is applied to an optical cable network natural language operation and maintenance system, collects multi-dimensional data including optical cable vibration, temperature, environment, optical power and OTDR link attenuation through an enhanced optical fiber distribution robot of a physical perception layer, encapsulates into a multi-sensing data package MSDP, reports after data alignment relying on clock synchronization, carries out unified semantic modeling, fusion storage and semantic reasoning on the MSDP data package and network resource data, GIS geographic information and service data through a data fusion layer, constructs an optical cable operation and maintenance knowledge graph, receives natural language instructions of operation and maintenance personnel through an application interaction layer, completes intention understanding, knowledge retrieval, task planning and execution scheduling by the intelligent decision layer through multi-agent collaboration, simultaneously carries out alarm correlation analysis and health degree scoring, generates a preventive maintenance work order, and thus reduces the operation and maintenance threshold, improves the fault early warning and emergency recovery efficiency.

The application provides an optical cable network structure optimization method and system, computer equipment and a storage medium, and relates to the technical field of communication. The method comprises the following steps: constructing an optical cable network knowledge graph; determining an optimization range according to the attribute characteristics of nodes and edges in the optical cable network knowledge graph; and executing an optimization strategy on the optimization range based on the scene requirements of the optical cable network. The optimization range comprises redundant optical cable sections and / or non-loop nodes and optical cable sections in the optical cable network. The optimization strategy comprises simplifying the redundant optical cable sections that are repeatedly laid, and / or constructing a predicted optical cable loop for the non-loop nodes and optical cable sections in the optical cable network. The technical scheme provided by the application simplifies the redundant optical cable sections that are repeatedly laid, and constructs multiple predicted optical cable loops for the non-loop nodes and optical cable sections in the optical cable network, thereby realizing the structure optimization of the optical cable network.

This invention discloses a method for optimizing the topology of optical fiber networks that balances latency and resilience, belonging to the field of communication network optimization technology. The method includes: constructing an initial MST topology based on the Kruskal algorithm; identifying network cut points and dividing subtrees based on Depth-First Search (DFS) on the initial MST topology; reconstructing a two-connectivity topology and optimizing for minimum latency using the network cut points and subtrees to select the optimal connection scheme for the optical fiber; and outputting the final optical fiber laying topology map, edge weight list, and performance indicators. In this invention, the initial MST topology is constructed based on the Kruskal algorithm, achieving connectivity of all communication nodes with the minimum total cost, significantly reducing cable costs compared to traditional unconstrained laying schemes. On this basis, dual-link redundancy design ensures two-connectivity of the network, while optimizing subtree connections with minimum latency as the objective, avoiding excessive redundancy under the premise of controllable latency, thus balancing cost and reliability.

The invention discloses an optical cable risk monitoring device and method, a controller and a computer program product, and belongs to the technical field of optical cable monitoring. The device comprises a multi-dimensional feature sensing circuit and a controller, and the multi-dimensional feature sensing circuit is in communication connection with the controller; the multi-dimensional feature sensing circuit is connected with the optical fiber span section and is used for acquiring multi-dimensional feature information of the optical fiber span section; wherein the optical cable comprises a plurality of optical fiber spans which are cascaded in sequence, and each optical fiber span corresponds to one multi-dimensional feature sensing circuit; the multi-dimensional feature information comprises at least two of optical fiber vibration information, optical fiber temperature information, optical fiber stress information and optical fiber loss information; and the controller is used for acquiring the multi-dimensional feature information and determining the risk type of the optical fiber cross-section based on the multi-dimensional feature information. Through the mode, various risk types of the optical fiber span can be accurately monitored, and the monitoring efficiency of an optical cable network in a complex environment is improved.

A system and method for distributed fiber-optic sensing (DFOS) event classification utilizing an energy-based generative artificial intelligence model. The method leverages a joint energy-based model (JEM) to ingest both human-annotated labeled sensing data and abundant unlabeled ambient sensing data collected from a DFOS interrogator. The joint energy-based model models the data distribution of high-dimensional spatial-temporal sensing signals, enabling semi-supervised classification that improves generalization, provides calibrated uncertainty estimates, and avoids domain-specific data augmentation constraints. The system further provides a test-time refinement mechanism utilizing Stochastic Gradient Langevin Dynamics (SGLD) updates in the input data space to remove the effects of sensor noise and recover discriminative classification accuracy upon deployment in pre-existing telecom cable networks.

The invention discloses a connection method of a silicon-based heat insulation sleeve at a cable network branch node, and belongs to the technical field of electric fitting. In a high-temperature-resistant cable network, a silicon-based heat insulation sleeve with a good heat insulation effect is usually used for protection in order to ensure that a wire bundle can resist the temperature of more than 450 DEG C for a short time, however, the sleeve is a closed integrated sleeve, and a plurality of nodes where branches are converged in the cable network are arranged in order to ensure the heat insulation effect of the sleeve. The existing knitted sheath sewing method cannot be realized, the tensile strength is low and 100% fitting is difficult to realize by adopting a heat-proof coating method of a heat-insulating adhesive tape, and the heat-insulating effect of the sheath is reduced, so that KH-RTV-400 silicone rubber with a good heat-insulating effect and good tensile strength is adopted; the glue solution is coated on the silicon-based heat insulation sheaths and gaps of the branch nodes of the cable network, and after the glue solution is vulcanized, the glue solution plays a good role in connecting the silicon-based heat insulation sheaths of the branch nodes, and a continuous compact heat insulation layer is formed and is integrated with the silicon-based sheaths.

The invention discloses a cable joint early fault detection method based on mathematical morphology, and belongs to the technical field of power line control, and the method comprises the steps: introducing a carbonization channel resistor and a water film resistor on a diode model, and obtaining a fault equivalent circuit model; building a cable network structure in the simulation software, setting a single-phase earth fault of the damped cable joint in the cable network structure, and performing fault simulation by using the fault equivalent circuit model; based on a fault simulation result, determining a zero-sequence voltage as an early fault detection signal, and enhancing and capturing fine distortion in a zero-sequence voltage waveform by using top-hat transformation to obtain a top-hat characteristic quantity; if the top cap characteristic quantity is greater than an amplitude safety threshold value and the duration greater than the amplitude safety threshold value is greater than a safety duration threshold value, judging that an early fault occurs; and determining the development stage of the early fault by using the top hat feature relative variance. According to the method, the early fault of the damped cable joint is accurately identified, the development stage of the damped cable joint is judged, and the detection sensitivity is improved.

The invention provides an optical cable fiber fusion distribution device, which comprises a fiber fusion disc cover plate, a data acquisition board, a plurality of end identification cards and a plurality of jumper fiber identification connection structures in one-to-one correspondence with the end identification cards, and is characterized in that the data acquisition board is integrated with a plurality of card reader ports matched with the end identification cards; the data acquisition board is detachably installed at the outer end of the inner side of the fiber splice tray cover plate, each end identification card is correspondingly connected with each card reader port in an inserted mode, each jumper fiber identification connecting structure is correspondingly connected to each end identification card, and each jumper fiber identification connecting structure is used for being connected with a jumper fiber corresponding to each end identification card. According to the optical cable fusion fiber distribution device provided by the invention, low-cost, high-efficiency and lossless transformation of an optical cable network can be realized.

The invention discloses an optical communication cable checking and monitoring system based on a vibration sensing technology, and relates to the technical field of optical communication cable monitoring. According to the optical communication cable checking and monitoring system based on the vibration sensing technology, through dual-wavelength orthogonal polarized light pulse injection and a polarization sensitive sensing optical cable, the response speed and the positioning precision are remarkably improved, dynamic gain control and a physical constraint neural network are combined, environment interference is effectively restrained, the false alarm rate is reduced, and the system is suitable for popularization and application. High-precision fault positioning and intelligent diagnosis are achieved, a multi-channel parallel computing architecture supports real-time data processing of a large-scale optical cable network, the overall efficiency of the system is improved, based on Stokes vector analysis and health entropy evaluation, the system can intelligently recognize multiple fault modes, comprehensive optical cable health state monitoring is provided, and the system has a wide application prospect. A hardware module is tightly combined with an algorithm, feasibility and practicability of the technical scheme are ensured, the method is suitable for complex scenes such as high-speed railways and oil and gas pipelines, and reliable technical support is provided for optical cable health management.

This application provides a short-circuit protection device for a power generation system, relating to the field of low-voltage electrical appliances. It includes a frame containing a cavity through which the power supply arc passes; and a first arc-extinguishing grid, spaced apart within the cavity of the frame, forming a channel with the same path as the cavity. This application achieves progressive energy dissipation of the arc by setting up an alternately distributed three-stage arc-extinguishing grid system and a composite path control structure: the third arc-extinguishing grid and the front form a dense cutting layer to force initial arc splitting; the inclined connecting middle section and the second arc-extinguishing grid construct a twisted and elongated channel; the reverse bending section constructs a three-dimensional cable network to rapidly increase the arc resistance; the grooved and protruding sections guide the arc to bifurcate and ascend, ultimately forcing the arc to zero through the synergistic effect of multi-stage segmentation, path reconstruction, and heat dissipation area.