69 results about "Quadrilateral grid" patented technology

The invention discloses a curved surface quadrilateral dominant grid generation method, device and equipment for an aircraft and a storage medium, and relates to the technical field of computational fluid mechanics, and the method comprises the steps: creating a surface unstructured grid based on surface grid generation parameters of a CAD file of the aircraft, carrying out the conformal mapping of the surface unstructured grid to a parameter domain plane, and calculating the vertex compression ratio of each grid vertex; selecting the current starting point with the minimum compression ratio and the maximum to-be-compared vertex in the adjacency list, and determining the current to-be-processed vertex with the minimum compression ratio in the adjacent vertexes and the advancing direction; determining to-be-processed discrete points according to the current compression ratio and the coordinate information to generate a current isoline, if the current compression ratio does not exceed a threshold value, iteratively updating the current starting point, and skipping to the step of determining the current to-be-processed vertex again; the discrete points are projected to the outer-layer isolines according to the isoline sequence, and the curved-surface quadrilateral dominant grid is generated based on the distance proportion between each discrete point and the projection point, so that the generation efficiency of the curved-surface quadrilateral grid is improved.

The invention provides a comprehensive scene map path planning method based on an improved A * algorithm, and the method comprises the steps: 1, carrying out environment modeling for a comprehensive scene map: segmenting a two-dimensional plane scene into more than two square grids, and carrying out the assignment of a single grid in a binarization manner to represent the occupation condition of the grids; constructing a protection area formed by a single-layer grid around the obstacle, and filling the protection area into gray; step 2, planning a path by adopting an improved A * algorithm: step 2-1, establishing an improved bidirectional search strategy; step 2-2, establishing a heuristic function with a barrier linear density weight; step 2-3, adopting a variable neighborhood node expansion mode to complete node expansion; and step 2-4, carrying out path secondary optimization. According to the method, the planning efficiency and the path performability in a complex environment are remarkably improved, and an effective solution is provided for navigation systems in the fields of service robots, intelligent warehousing and the like.

The invention discloses a polygonal and quadrilateral mesh automatic subdivision method based on deep reinforcement learning, relates to the field of computational geometry and mesh generation, and constructs an automatic subdivision framework fusing geometric priori knowledge and a data driving strategy. According to the method, nine basic topology filling templates covering triangles to hexagons are predefined as discrete action spaces, and continuous geometric segmentation is converted into a sequence decision problem; learning a mapping relation between the polygon state characteristics and the optimal template selection strategy by using a deep Q network, and balancing exploration and utilization through a dynamic epsilon-greedy mechanism; and in combination with a vertex number priority scheduling strategy and a multi-dimensional quality award function, guiding an intelligent agent to adaptively generate a high-quality quadrilateral grid. According to the method, full-automatic and high-robustness subdivision of the complex polygon area is achieved, the grid orthogonality and the length-width ratio quality are remarkably improved, manual intervention is avoided, and the method is suitable for engineering scenes such as finite element analysis.

The utility model discloses a steel structure cooling tower consisting of double-layer trilateral and quadrilateral units. The cooling tower consists of an upper part and a lower part, the lower part is formed by connecting and combining double-layer trilateral units according to a certain rule, and each double-layer trilateral unit is a double-layer reticulated shell formed by connecting a trilateral outer side chord member and a trilateral inner side chord member through a series of web members; the upper part is formed by connecting and combining double-layer quadrilateral units according to a certain rule, and each double-layer quadrilateral unit is a double-layer reticulated shell formed by connecting a quadrilateral outer side chord member and a quadrilateral inner side chord member through a series of web members. According to the double-layer steel structure cooling tower, the internal force conduction path of the double-layer steel structure cooling tower under the action of lateral force is optimized, the space stress performance is good, the stability of the structure is guaranteed, and the overall steel consumption is further reduced. Through connection and assembly of modular unit assemblies, standardized design, industrial production and fabricated construction of the cooling tower structure are achieved.

The invention discloses a geometric model quadrilateral mesh generation method and system based on GPU parallelism, and belongs to the technical field of computer graphics. The method comprises the following steps: for a geometric model formed by a plurality of surfaces, obtaining parameterized coordinates of surface patches in parallel by a GPU thread, and performing spatial transformation on the parameterized coordinates by establishing a bounding box of the surface patches to obtain a surface patch splicing result; generating an original triangular mesh model based on a patch splicing result, and processing triangular units in the original triangular mesh model in parallel by the GPU thread to obtain a triangular mesh after cavity filtering and network geometric information of the triangular mesh; the GPU thread solves the network topology structure of the triangular mesh in parallel; the GPU thread performs parallel solution of the frame field based on the network geometric information and the network topology information of the triangular mesh; and generating a quadrilateral grid structure of the geometric model in combination with the frame field. According to the method, the grid structure generation efficiency is improved by improving the calculation performance of the curved surface frame field.

The utility model discloses a silicon capacitor electrode structure and a silicon capacitor, which can further improve the capacitance of a capacitor in a limited space by nesting, combining and arranging a plurality of groups of element arrays distributed in a quadrilateral grid mode more reasonably and precisely, so that the capacitor can store more charges.

The present application provides a valve stent, a method for processing a valve stent, and an artificial valve. The valve stent is formed by cutting a metal tube and has a cut state and an expanded state. The valve stent comprises a plurality of grid cell structure units distributed in a circumferential direction of the valve stent and extending in an axial direction of the valve stent. Each grid cell structure unit comprises a plurality of quadrilateral grid cells, and the plurality of quadrilateral grid cells comprise at least one end grid cell proximal to the heart, at least one middle supporting grid cell and at least one end grid cell distal to the heart that are sequentially arranged from a first axial end to a second axial end in the axial direction of the valve stent. Each quadrilateral grid cell comprises four stent rods sequentially connected end to end. Each stent rod comprises a straight rod section and a connecting section. In the cut state, the straight rod sections of two stent rods, opposite to each other in the circumferential direction of the valve stent, of each quadrilateral grid cell gradually diverge from each other from the middle to the end of the quadrilateral grid cell in the axial direction to form an included angle, wherein the included angle of the middle supporting grid cell is less than or equal to 12 degrees.

The invention provides a quadrilateral surface re-topology method based on frame field prediction and electronic equipment. The quadrilateral surface re-topology method based on frame field prediction comprises the following steps: inputting a triangular mesh model into a frame field neural network model, and carrying out direction regression and amplitude diffusion taking the direction as the condition to obtain a corresponding frame field; performing deformation based on the frame field to obtain a deformed grid model; performing isotropic quadrilateral re-mesh division on the deformed mesh model to obtain an initial quadrilateral mesh model; and performing inverse deformation on the initial quadrilateral mesh model to obtain a quadrilateral mesh model corresponding to the triangular mesh model. Through the steps of frame field inference, deformation, isotropic quadrilateral grid re-division and inverse deformation, the quality of the finally generated quadrilateral grid is ensured, so that the purpose of improving the quality of the quadrilateral grid is achieved.

The utility model relates to a side length reinforced geogrid which comprises a plurality of regular hexagon units arranged in a determinant mode and quadrilateral units located in the regular hexagon units, and the four corners of each quadrilateral unit are located on the four side edges of the corresponding regular hexagon unit respectively. First reinforcing ribs which are arranged in a crossed mode and serve as rectangular diagonals are further arranged in the quadrilateral units. The quadrangle units are arranged in the regular hexagon units, the corners of the quadrangle are located on the four side lengths of the hexagon, and therefore the strength of the side lengths of the regular hexagon units is enhanced, meanwhile, the strength of the side lengths of the regular hexagon units is further enhanced through the arrangement of the first reinforcing ribs, and the stress strength of the corners of the quadrangle is improved; the interlocking effect is improved, and meanwhile the supporting strength in the quadrangle is enhanced.

The embodiment of the invention provides a mesh generation method for an additive manufacturing slice type multilayer structure. The mesh generation method can solve the technical problem that the mesh generation capacity is poor in the prior art. The method includes dividing a surface grid on a first surface and converting a second surface into a point cloud result. And matching the grid nodes and the surface nodes according to process constraints to obtain surface node pairs. In this way, not only the geometrical shape is considered, but also the additive manufacturing layering process is considered. And according to the surface node pairs, based on the quadrilateral grids, dividing layered finite element units mainly comprising hexahedrons, that is, generating volume grids through the surface grids. According to the method, the stability of various spatial curved surfaces is ensured while rapid grid division is realized, and a grid division algorithm which is high in automation degree, good in stability and good in grid quality is realized. The additive manufacturing slice type multilayer structure is subjected to grid division, the material direction and the layering direction are accurately appointed, and the efficiency and accuracy of simulation calculation of the additive manufacturing slice type multilayer structure are improved.

The invention provides a fan blade topological optimization method based on a truss-continuum hybrid grid finite element model, and belongs to the technical field of fan blade optimization design. According to the method, a quadrilateral unit is adopted to simulate a composite material base body in the fan blade, a truss unit is adopted to simulate reinforced fibers in the fan blade, a truss-continuum mixed mesh finite element model is constructed, topological optimization is performed on the basis of the truss-continuum mixed mesh finite element model, and therefore the composite material base body in the fan blade is simulated. The structural difference between the composite material matrix and the reinforced fibers is comprehensively considered, the optimization accuracy can be improved, and the expected requirement is met.

The application aims to provide a stress-based 3D printing continuity path planning method. The application obtains a to-be-printed model, discretizes the to-be-printed model into a hexahedral grid, the side length of the grid is twice the printing path width, and the height is the pre-printed layer thickness, and the principal stress field is obtained by using finite element analysis. Since the path is generated on a two-dimensional quadrilateral grid, the principal stress direction field is projected onto the two-dimensional domain. For the stress value of the unit close to zero, the stress direction is arbitrary, a method of uniform principal stress direction field is proposed, the stress line is extracted from the principal stress direction field, a plurality of connection rules are adopted, the isolated points are eliminated, and the continuity is optimized. Finally, each stress line is offset to generate a path with a closed loop, and different paths are connected to generate a globally continuous path. In addition, the extrusion rate is adjusted adaptively according to the path direction to alleviate the overfilling problem caused by grid discretization. The model printed by the method has strong mechanical properties under the premise of guaranteeing the surface quality and the curved surface accuracy.

The invention discloses a wing quadrilateral unit structure finite element model automatic construction method and device, equipment and a medium, and relates to the technical field of aerospace, and the method comprises the steps: determining third coordinate data of a wing middle section based on a target control parameter, first coordinate data of a wing root section and second coordinate data of a wing tip section; based on the first coordinate data, the second coordinate data and the third coordinate data, constructing an airfoil geometric parameterized model by utilizing a preset interpolation method, generating target grid control points and target grid control edges corresponding to the wing root section, the wing tip section and the wing middle section respectively, and determining a first grid control edge connecting the wing root section and the wing middle section, the second grid control edge is connected with the wing middle section and the wing tip section; and determining a wing quadrilateral unit structure finite element model file based on the first quadrilateral mesh of the skin, the second quadrilateral mesh of the wing rib and the third quadrilateral mesh of the wing spar. And a high-fidelity structural finite element model is efficiently constructed.

A computer-implemented method and apparatus for generating a quadrilateral grid from an image with an alpha channel. The method includes receiving an image with an alpha channel depicting a shape mapped onto a 3D surface, vectorizing the shape to create a vector path, determining corners by calculating a centroid and identifying the points, correcting a winding order to ensure a clockwise orientation, constructing a quadrilateral grid by setting sub-paths based on detected corners, resampling the sub-paths to match specified rows and columns, performing weighted interpolation across the grid using inverse square distance weighting, and outputting the generated quadrilateral grid for display on a computer device. The apparatus comprises a processor configured to execute these steps, including vectorizing the shape, determining corners, correcting the winding order, constructing and resampling the grid, performing weighted interpolation, and subdividing the 3D mesh for flexible manipulation and extrapolation.

The invention provides a communication system operation and maintenance management method and system applying data analysis, and relates to the technical field of data processing.The method comprises the steps that 1, original data streams of equipment operation data and service data are collected in real time, the original data streams are divided according to a preset time window, and the divided original data streams are obtained; mapping the multi-dimensional data in each window into a point cloud data set in a high-dimensional space; 2, based on the point cloud data set, spatial distribution characteristics are extracted through principal component analysis, and a virtual reference plane representing the state is constructed; and step 3, delimiting an initial quadrilateral grid on the virtual reference plane, and performing adaptive segmentation on the initial grid according to the density gradient of the point cloud data set to form heterogeneous sub-regions. According to the invention, real-time accurate early warning of communication system abnormity, rapid fault positioning and predictive maintenance based on trend analysis are realized, and the intelligent level of operation and maintenance management and the reliability of the system are effectively improved.

The application discloses a kind of thermal-mechanical-phase field coupling simulation methods of concrete mesoscopic thermal cracking, the present application is based on the numerical simulation method of mesoscopic concrete thermal cracking based on phase field theory, comprising the following steps: establishing mesoscopic concrete model, mainly including aggregate mortar and interface transition zone;According to the thermodynamic parameters of each component of mesoscopic concrete obtained according to data reference or physical test;Determine the thermodynamic boundary condition according to the environment of concrete;Free triangle or quadrilateral element is used to disperse mesoscopic concrete model, and determine solving error;Thermal-mechanical-phase field damage coupling model is used to solve the cracking process of concrete model under the action of temperature.The application considers the heterogeneous structure of concrete, establishes a thermal-mechanical damage coupling model based on the phase field fracture theory, and the coupling mode is more in line with engineering practice, which can provide calculation basis for concrete cracking caused by temperature and provide guiding opinions for safety evaluation of hydraulic concrete structure.

The embodiment of the invention discloses a multilateral hole filling method based on a generalized non-uniform rational B spline, and the scheme can comprise the following steps: for a multi-pipe mixed connection problem, firstly, fitting a boundary curve by using a uniform rational B spline curve, for example, in a three-pipe mixed connection problem, the boundary curve is a boundary curve of a pipe curved surface and a constructed connection curved surface, and the boundary curve is a boundary curve of a pipe curved surface and a constructed connection curved surface; then constructing a quadrilateral grid as a control grid according to the fitted curve, and generating an initial GNURBS curved surface; and finally, a control point of the GNURBS curved surface is adjusted through energy optimization, so that a smooth filling curved surface meeting normal constraint and curvature constraint is obtained, for example, in the multi-pipe mixed connection problem, the filling curved surface is a mixed connection curved surface for connecting the boundaries of a plurality of pipes.

The invention discloses a method for creating a long-distance closed mesh surface model, electronic equipment and a storage medium, and the method comprises the steps: obtaining the position of a reference line in a three-dimensional space based on a route design result of linear engineering; analyzing the cross section graph, and constructing cross section component data; establishing a constraint relation of points in the cross section graph based on the reference point, and configuring a label for each constraint; generating an initial stake number list according to a preset segment interval, and dynamically inserting encryption points based on the curve type and combining the encryption points into the initial stake number list to form a final stake number list; mapping corresponding points in the cross section to a three-dimensional space according to the relative coordinates and the plane unit normal vector, and generating a cross section placement list; and on the basis of the cross section placement list and the cross section component data, constructing quadrilateral grids between adjacent cross sections, splicing the quadrilateral grids to generate transition grid surfaces, and forming a closed grid surface model by combining starting and ending transverse grids. According to the method, the precision and efficiency of long-distance linear engineering three-dimensional modeling are remarkably improved.

The invention provides an intelligent grid optimization method and system based on domestic general scientific calculation software, and the method comprises the steps: obtaining and analyzing a grid data file, and obtaining the connection relation information of nodes and units in a grid; converting the grid into a graph structure based on the connection relation information, and inputting the graph structure into a grid smoothing model for optimization to obtain a high-quality grid; the grid smoothing model is obtained by training based on a grid data set in advance; the grid data set is obtained by constructing a geometric shape and randomly adjusting grid points in advance; determining that the grid smoothing model is successfully trained after the loss function is converged; the loss function is obtained by calculating the side length and angle of each grid unit in the grid data set. According to the method, the unsupervised loss function oriented to structured grid smoothing is designed, the unsupervised grid smoothing model oriented to the large-scale structured quadrilateral grid is constructed and trained, nodes of different degrees are smoothed, the method is not influenced by a data input sequence, and the optimization efficiency is improved while the grid optimization quality is improved.

A method of generating a panel infill geometry of a sandwich panel, includes providing a driver mesh representing a panel mid-surface of a sandwich panel. The driver mesh is comprised of a plurality of quadrilateral elements. The method further includes providing a reference unit cell mesh configured to fit exactly within a cube. The reference unit cell mesh is comprised of a unit infill mesh interconnecting a pair of unit face sheet meshes. The method additionally includes mapping a plurality of the reference unit cell meshes respectively onto a plurality of hexahedral elements respectively associated with the plurality of quadrilateral elements, through the use of basis functions defined on each of the plurality of quadrilateral elements in a manner causing adjustment of the size and shape of the plurality of reference unit cell meshes to conform respectively to the plurality of hexahedral elements.

The invention relates to the technical field of futures analysis, in particular to a quadrangular block diagram-based futures analysis method. The method comprises the following steps: S1, data collection; s2, preprocessing the data collected in the step S1; s3, constructing a quadrilateral grid through the data processed in the step S2; s4, filling the quadrilateral grids obtained in the step S3 with the data processed in the step S2 to obtain quadrilateral block graphs; s5, carrying out statistics on transaction data in the quadrilateral block graph obtained in the step S4; and S6, determining the futures trading condition for the quadrilateral block diagram obtained in the step S4 through color change. According to the futures analysis method based on the quadrilateral block diagram provided by the invention, by incorporating dimensions such as the specific position amount and the multi-empty direction of the futures market into thermodynamic diagram analysis, the limitation of traditional futures schematic is overcome, and more comprehensive market microstructure insight is provided for futures traders.

The pure quadrilateral partition intelligent generation method based on the diffusion model comprises the following steps: S1, a global integer linear programming model containing a plurality of objective functions is constructed, and a quadrilateral grid which is symmetrical and aligned is generated by minimizing the objective function; S2, a two-dimensional contour graph of a CAD model is obtained according to an open source three-dimensional CAD model data set ABC; a triangular mesh model is generated according to the two-dimensional contour graph; S3, boundary fairing treatment is performed on the triangular mesh model, and hole digging and random segmentation are further performed in the interior; S4, a signed distance field is generated according to the triangular mesh model; a pure quadrilateral partition is extracted according to the quadrilateral grid; and a model outer contour image is obtained according to the pure quadrilateral partition; S5, a pure quadrilateral partition generation diffusion model is constructed; and the pure quadrilateral partition generation diffusion model is trained by using the signed distance field and the model outer contour image. The pure quadrilateral partition is rapidly generated, and the training time of the diffusion network model is greatly shortened.

The embodiment of the application provides a grid division method for additive manufacturing slice type multilayer structure, which can solve the technical problem of poor grid division capability in the related art. The method comprises the following steps: dividing a surface grid on a first surface, and converting a second surface into a point cloud result. According to process constraints, matching grid nodes and surface nodes to obtain surface node pairs. In this way, not only the geometric shape is considered, but also the additive manufacturing layering process. According to the surface node pairs, based on a quadrilateral grid, layered hexahedron-based finite element units are divided, that is, a volume grid is generated through the surface grid. While achieving rapid grid division, the stability of various spatial surfaces is ensured, and a grid division algorithm with high automation degree, good stability and good grid quality is realized. The grid division is performed on the additive manufacturing slice type multilayer structure, the material direction and the layering direction are accurately specified, and the efficiency and accuracy of simulation calculation of the additive manufacturing slice type multilayer structure are improved.

Embodiments of the present invention provide a method for constructing a grid map, a path planning method, a processor, and a device, belonging to the field of map construction. The method for constructing a grid map includes: obtaining a target area; and constructing a grid map for the target area. The grid map comprises an octagonal grid matrix, wherein two adjacent octagonal grids share a common edge, and four adjacent octagonal grids in two adjacent rows or columns enclose a quadrilateral grid. The present invention can reduce computational complexity.

The embodiment of the invention discloses a map boundary region construction method and device, electronic equipment and a storage medium, and the method comprises the steps: generating a regular quadrilateral grid according to an original grid resolution, enabling vertexes to accurately correspond to pixel boundary intersection points, and enabling each patch unit to map a single pixel region; calculating a geometric center coordinate of the patch and sampling raster data to obtain a pixel region identification code; traversing adjacent edges of the grid, and screening edges with different identification codes on two sides to form a discrete boundary line segment set; based on the vertex connection relation, recombining the discrete line segments into a geometrically connected boundary broken line set through depth-first traversal; a parameterized path geometry grid is generated based on a broken line, and real-time width adjustment and subdivision precision are supported. According to the method and the device, the common problems of sawteeth and mosaics in traditional grid boundary visualization are solved, and the visual performance effect of a game scene is remarkably improved.

The invention aims to provide the space step-shaped steel structure roof structure system adapting to modularization, and the large-span space step-shaped steel structure roof structure system solves the problem that a traditional regular geometric unit is difficult to adapt to a step-shaped discontinuous space form. The device comprises a plurality of rectangular modular units, and the rectangular modular units are in an orthogonal grid shape; each multi-cavity conversion node is correspondingly connected with the four rectangular modular units, and the connection heights of the four rectangular modular units and the same multi-cavity conversion node are discontinuously changed in a step shape; the plurality of structural rod pieces are arranged in an orthogonal grid shape, and the end part of each structural rod piece is correspondingly connected with the bottom of the corresponding multi-cavity conversion node; and each lattice supporting piece is correspondingly arranged below the corresponding multi-cavity conversion node, and the other end of each lattice supporting piece is connected with the building main body. The invention is applied to the technical field of steel structure roof structures.

The application discloses a structure surface grid automatic generation method based on topological filling, and relates to the technical field of aerospace engineering simulation and grid generation. The method comprises the following steps: intelligently dividing a three-dimensional CAD model into parts to obtain parts with semantic labels and geometric contours; sequentially performing ordered topological filling on each part according to a preset order, adjusting the number of intersection edge points of adjacent parts to ensure grid connection, and generating topological lines; projecting the topological lines onto the model surface for calibration; adaptively interpolating the projected topological lines based on model curvature and simulation conditions to generate point cloud data; generating an initial quadrilateral grid based on the point cloud; projecting the initial grid nodes onto the model surface again and optimizing the quality, and outputting the final grid. The application realizes end-to-end automatic generation from a CAD model to a high-quality surface grid, eliminates manual intervention, ensures the natural matching of grids between parts, and significantly improves the grid generation efficiency and quality.

The present invention discloses a method for rendering motion blur special effects for high-speed rotation, comprising the following steps: selecting a preset rendering object, collecting the polar coordinates of the motion trajectory of the rendering object and the changes in the rotation speed when the rendering object is imaged; pre-discretely sampling the rendering object according to the changes in the polar coordinates of the motion trajectory of the rendering object and the rotation speed to obtain discrete sampling data; caching the discrete sampling data into a 3D texture; when rendering, looking up the 3D texture table according to the current rotation speed of the rendering object to obtain the color value of the rendering object; pasting the color value of the rendering object in the form of a texture to the quadrilateral grid of the real-time rendering scene. The present invention is based on a fast calculation method of simple texture mapping, which can produce a motion blur effect consistent with the real-life image, and effectively overcomes the shortcomings of traditional algorithms such as pseudo contours. This solution only involves 3D texture operations, has low requirements for rendering hardware, and is more suitable for deployment on mobile or Web platforms.

The application discloses a smooth finite element-Newmark calculation method for underwater target transient acoustic scattering, and belongs to the technical field of underwater transient acoustic scattering numerical simulation. First, a calculation domain of an underwater transient acoustic scattering field is discretized into a standard quadrilateral element grid, and an acoustic pressure field interpolation format is constructed. The quadrilateral element is divided into multiple smooth domains, a smooth acoustic pressure gradient field is obtained through acoustic generalized gradient smoothing technology, and a smooth acoustic pressure gradient matrix is obtained through Gaussian integration. A system matrix equation is constructed in combination with a transient acoustic scattering control equation and a Galerkin weighted residual value method. A parameter-optimized Newmark time integration method is used to complete time domain discretization and recursive solving, and numerical results of the transient acoustic scattering field are obtained. The application softens the system stiffness matrix through gradient smoothing technology, reduces spatial discretization error, eliminates time domain false numerical damping, and has higher precision than the standard finite element method under the same grid, thereby providing an efficient and reliable scheme for underwater transient acoustic scattering engineering calculation.

The application provides a communication system operation and maintenance management method and system applying data analysis, relates to the technical field of data processing, and the method comprises the following steps: step 1, collecting the original data flow of equipment operation data and service data in real time, dividing the original data flow according to a preset time window, and mapping the multidimensional data in each window into point cloud data set in a high-dimensional space; step 2, based on the point cloud data set, extracting spatial distribution characteristics through principal component analysis, and constructing a virtual reference plane representing a state; step 3, drawing an initial quadrilateral grid on the virtual reference plane, and adaptively segmenting the initial grid according to the density gradient of the point cloud data set to form a heterogeneous sub-region. The application realizes real-time and accurate early warning of communication system abnormalities, rapid fault positioning and predictive maintenance based on trend analysis, and effectively improves the intelligent level of operation and maintenance management and the system reliability.