184 results about "Cable network" patented technology

The invention discloses an optical cable topology visualization monitoring analysis system and method, and relates to the technical field of optical cable monitoring. According to the optical cable topology visual monitoring analysis system and method, the complex dependency relationship between optical cable network equipment is accurately captured by using the graph neural network, and the wavelength division multiplexing, OTDR test and optical power measurement technologies are fused, so that online monitoring without interrupting service communication is realized, the real-time performance and efficiency of monitoring are improved, the positioning precision of optical cable broken fibers can be improved, and the optical cable topology visual monitoring analysis system and method are suitable for popularization and application. Through new and old OTDR curve comparison and big data analysis, optical fiber aging and degradation trends are pre-judged in advance, accurate active operation and maintenance are realized, the probability of optical cable fault occurrence is reduced, the reliability and stability of a network are improved, and by cooperating with visual display of a complex power grid optical cable map, the method has the advantages of high accuracy and high reliability. The topological structure and the geographic position of the optical cable are visually displayed by fusing multiple levels, clear visual information is provided for operation and maintenance personnel, and management and decision making are facilitated.

The invention discloses a cable three-dimensional modeling method and device based on a video stream and a key frame, and belongs to the technical field of three-dimensional modeling of power system cable equipment, and the method comprises the following steps: constructing a dynamic truncation symbol field based on camera video stream data, and extracting a cable surface grid; triggering key frame capture, and establishing a key frame database; performing multi-modal fusion on the video stream features and the key frame features to generate a cable deformable template; obtaining a first-order deformable template model based on the cable deformable template; constructing a staged multi-scale adversarial discriminator, and deploying convolution kernel optimization at different resolution levels to obtain a second-order deformable template model; performing covariance optimal registration on the scene point cloud reconstructed by the video stream and the second-order template point cloud to obtain a third-order optimization template model; and constructing a density sensing gradient field, and dynamically fusing the video stream and the key frame data to generate a cable three-dimensional scene model. According to the invention, the precision and real-time performance of cable network modeling in a complex environment are improved.

A method and apparatus for detecting and locating a fault in a cable network. A cable modem may perform channel estimation to obtain a time domain channel response on an echo channel in a cable network. The cable modem then analyzes the time domain channel response to determine whether there is any change from a previously obtained time domain channel response on the echo channel. If there is a change from the previously obtained time domain channel response, the cable modem may generate an alert for a fault in the cable network and estimate a location of the fault based on the time domain channel response. Calibration may be performed to determine a reference latency for a reflection occurred inside the cable modem, and the location of the fault may be estimated based on the reference latency.

The invention discloses an optical cable network automatic monitoring system based on industrial equipment, which relates to the field of industrial automation and comprises a dynamic monitoring module, an abnormity repairing module, a structure analysis module, a cloud management platform module, an automatic alarm module, a safety guarantee module, an intelligent maintenance module and an expansion compatible module. Wherein the output end of the dynamic monitoring module is connected with the input ends of the abnormity repairing module and the cloud management platform module; the output end of the abnormity repairing module is connected with the input end of the structure analysis module; the output end of the cloud management platform module is connected with the input end of the automatic alarm module; the output end of the automatic alarm module is connected with the input ends of the intelligent maintenance module and the safety guarantee module; the output ends of the safety guarantee module and the intelligent maintenance module are connected with the input ends of the cloud management platform module and the expansion compatibility module; according to the method, the problems that a fault point cannot be predicted, a network topology structure cannot be automatically identified and optimized and the compatibility is poor in a traditional monitoring system are solved.

The invention discloses a building energy-saving intelligent management and control method and system based on the Internet of Things, particularly relates to the technical field of intelligent building energy management, and is used for solving the problem that in the prior art, when building internal and external environment data are collected, resolution ratios of input data in the space-time dimension are not matched. The method comprises the following steps: acquiring Internet of Things sensor space-time distribution data of each area in a building; identifying space-time heterogeneity characteristics of data acquisition density and sampling frequency, and dynamically adjusting the sampling frequency of a low-frequency region; establishing a mapping relationship between the environmental parameters and the energy consumption parameters; traversing an instruction path and eliminating an inefficient instruction based on a conflict path weight; generating a regional differentiation energy-saving strategy and analyzing an electromagnetic interference distribution entropy value to insert an execution time difference; the optimized energy-saving strategy is executed; data acquisition optimization, energy consumption modeling precision and equipment instruction conflict resolution are realized, the reliability of an energy-saving strategy and the energy efficiency of the system are effectively improved, and the influence of electromagnetic interference on a building cable network is inhibited at the same time.

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 relates to the technical field of electric power, in particular to a cable accessory intelligent monitoring system based on multi-sensor fusion. In the scheme of the application, the preprocessing module performs preliminary data processing at the edge, so that the data transmission burden is reduced; the regional processing module can establish a dynamic communication group to realize efficient data interaction between nodes. And the dynamic communication group dynamically adjusts the communication link according to the actual operation condition of the cable accessory and the network state. When a new cable accessory is accessed or an existing accessory has a fault, the system can quickly complete the reconfiguration of a monitoring strategy and a communication link, ensures that the monitoring work is continuously and efficiently carried out, and effectively improves the adaptability and flexibility of the system in a dynamic change network environment. The regional processing module can perform cross-regional data fusion, considers cable operation characteristic differences in different regions, and integrates and analyzes data in a targeted manner. Therefore, the system can carry out fine management on a large-scale complex cable network and accurately identify associated faults among regions.

A satellite cable laying operation platform relates to the technical field of satellite manufacturing, and comprises a platform main body, the platform main body comprises a bottom plate, two first side plates, two second side plates, a plurality of partition plates, a plurality of quick release positioning blocks and a middle beam, the bottom plate is rectangular, the two first side plates can respectively rotate around two short edges of the bottom plate, and the two second side plates can respectively rotate around two short edges of the bottom plate; the two second side plates can rotate around the two long edges of the bottom plate respectively, the partition plates are installed on the bottom plate, the quick-release positioning blocks are used for positioning the first side plates and the bottom plate when the first side plates are perpendicular to the bottom plate, and the middle beam is used for being arranged on the first side plates and the partition plates in a crossing mode. And the plurality of electrical interface simulation pieces are mounted on the platform main body and are used for laying cables. By simulating the satellite cabin environment and laying the cable, the wiring work in the satellite AIT link can be preposed, the reliability of the whole satellite cable network spatial layout can be verified in advance conveniently, the laid cable network can be directly used in the satellite AIT link in a component form, the satellite production efficiency is improved, and the satellite manufacturing period is shortened.

The invention discloses an aircraft cable network layout determination method, device and equipment, a medium and a product. The method comprises the following steps: receiving a cable network layout editing request, and determining aircraft connector information according to an electrical schematic diagram corresponding to a first aircraft; receiving a contact editing operation, and generating an aircraft contact distribution table according to the contact editing operation and the aircraft connector information; receiving a cable editing operation, and generating a cable information table corresponding to the first aircraft according to the cable editing operation and the aircraft contact distribution table; and in response to the layout information generation request, generating cable network layout information corresponding to the first aircraft according to the aircraft contact distribution table and the cable information table, so as to produce a cable network of the first aircraft according to the cable network layout information. According to the technical scheme, the effect of determining the cable network layout information in the aircraft based on the electrical schematic diagram of the aircraft is achieved, and the efficiency of determining the cable network layout information is improved on the basis of reducing the error rate of the layout information.

The invention belongs to the technical field of circuit detection, and particularly relates to a distributed photovoltaic power station cable fault positioning system and method.Detection equipment is started, a carrier signal is sent to a cable network, electromagnetic interference characteristics are recorded synchronously, the frequency of the carrier signal is systematically adjusted to avoid recognized interference, and the fault positioning accuracy is improved. And repeating the steps until a non-interference working frequency band is found, then monitoring the signal transmission condition step by step along a cable path, and analyzing a signal attenuation mode to accurately position a potential fault point. According to the method, the problem of misjudgment caused by electromagnetic interference generated by the frequency converter is effectively solved, the accuracy and reliability of fault detection are remarkably improved, the maintenance cost and time are reduced, and the operation and maintenance efficiency of a photovoltaic power station is improved. The improvement has remarkable technical effect and practical value in a complex electromagnetic environment.

The invention provides a multi-stage combination automatic optimization method for a satellite three-dimensional cable network path, and the method comprises the steps: judging the membership of a cable binding support, a connector and a cabin plate through reading a satellite three-dimensional satellite model, and defining the attributes of a cabin penetrating hole and a cross-plate connection point; constructing a three-layer information table of a cable network, a cable bundle and a cable branch; selecting the longest different plate / same plate branch as a main branch according to cabin plates at the head end and the tail end of the branch; decomposing stage by stage according to the distribution of main and branch cabin plates, and performing path optimization by adopting a plate path optimization algorithm based on a Floyd algorithm, an intra-region path optimization algorithm and a region path optimization algorithm; the slave branch selects the nearest access point for optimization based on the main branch path; and circularly processing all the cable bundles to complete the path planning of the whole cable network. Therefore, automatic optimization of the three-dimensional cable network path of the satellite deck is realized, the problems of low efficiency and poor quality of manual design of a general module are solved, and the method is adaptive to a whole satellite and a multi-deck satellite with a single / multi-plane deck and has universality.

A system, such as a deflectometer (100), comprising a plurality of modular units (1; 206); a master controller (50); and a plurality of slave units including a first slave unit and a second slave unit; wherein each slave unit is interlinked with a corresponding modular unit (1; 206); and wherein a cabled bus network (22) connects the master controller (50) to the first slave unit and interconnects the first slave unit to a second slave unit. The master controller (50) automatically and dynamically keeps track of the physical position or at least the physical order of the slave units on the cabled network.

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 invention relates to the technical field of spacecraft design, in particular to an aircraft information flow analysis, recheck and recalculation system, which comprises an information large graph design module used for automatically extracting design data such as an interface data list and a cable network contact table, generating a static information large graph through data check and analysis, and supporting signal management, layered display and export; the model library construction module is used for constructing a hierarchical information professional model library based on a Modelica language and covering multi-level models from a basic library, a universal library to a model customization library; and the information flow simulation verification analysis module is used for mapping the static information large graph into a simulation model, carrying out dynamic simulation verification on a system network, a communication network and a load network, and realizing multi-dimensional visual display of a result. According to the method, the information system design is rechecked and recalculated from static state to dynamic state and from manual operation to automatic operation, and the design efficiency, accuracy and verification sufficiency are effectively improved.

Methods and systems provide a computer technologic enhanced experience to a user when the user visits an indoor environment. A method may include computer readable instructions for identifying and tracking the user in the indoor environment using an indoor positioning system. An indoor positioning system may include a leaky feeder cable network, a plurality of Wi-Fi access points and location tracking using triangulation and Tine-to-Flight calculations. Further, based on the tracking of the user, the user is provided with an augmented navigation route for navigating in the indoor environment. The optimized navigation route is displayed on a virtual 3D model of the indoor environment. Further, the method comprises providing augmented item list to the user while navigating in the indoor environment, such that the augmented item list is generated via the use of advanced analytics, AI / Machine learning capabilities and computer vision based machine learning model for object tracking and recognition.

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.

The invention discloses an optical cable on-line monitoring method and device, and belongs to the technical field of optical cable monitoring, and the method specifically comprises the steps: a monitoring host carries out the initialization configuration, and determines a standby cable core list based on the network topology of a to-be-monitored optical cable; carrying out initial test on the standby cable core to obtain a historical baseline, and presetting an optical time domain reflection reference threshold and an optical power set threshold; switching to different standby cable cores according to a polling period, acquiring real-time optical domain reflection data and optical power data, and comparing with a historical baseline, a preset optical time domain reflection reference threshold and an optical power set threshold to judge an abnormal condition; retesting the abnormal cable core, positioning a fault and outputting an alarm in combination with a geographic information system; through cooperative work and polling monitoring of the optical performance monitoring module group, real-time discovery and accurate positioning of optical cable faults are realized, and the operation and maintenance efficiency and reliability of an optical cable network are improved.

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 carrier rocket cable network beam splitting data processing method, device and equipment, belongs to the technical field of rocket manufacturing, and solves the problems of unreasonable layout, poor assembly compatibility and incapability of dynamically responding to system change in carrier rocket cable beam splitting design. The method comprises the following steps: acquiring rocket appearance data and cabin section layout data; analyzing and processing the rocket appearance data and the cabin section layout data to obtain spatial constraint data; determining a trunk line path according to the spatial constraint data; according to the cabin section layout data and the main line path, determining segmented current data; determining cable line diameter data according to the segmented current data; and determining rocket cable beam splitting data according to the cabin section layout data and the cable wire diameter data. According to the scheme, the layout reliability is improved, the space utilization rate is increased, and the electrical stability of the rocket is guaranteed.

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 satellite cable network weight reduction method and a satellite, and the method comprises the steps: S1, carrying out the optimization of single-machine layout, and enabling the layout spacing between single-machine devices in mutual connection to be within a preset range; step S2, optimizing the cable network contact table, including dividing preset high-power contacts and signal contacts into different electric connectors to respectively form a power electric connector and a signal electric connector; selecting a wire gauge according to the contact current value; breakpoint processing is carried out on the cable connection relation forming the closed net-shaped structure, and contacts bypassed by a path are disconnected and converted into a scattered line or switching module form; s3, telemetering and remote control signals are transmitted in a wireless transmission mode instead of a cable; and S4, replacing a conventional cable with an optical fiber, and adjusting the communication capacity, the cross sectional area and the weight of the optical fiber.

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.