46 results about "Planar grid" patented technology

One or more embodiments of the invention provide a three-dimensional model generation method, apparatus and device, a medium and a program product. The method is applied to CAD software and comprises the following steps: acquiring a plane image and a model thickness of a modeling object; generating a plane grid for the modeling object according to the plane image; generating a front grid, a back grid and a side grid for the modeling object according to the plane grid and the model thickness; and combining the front grid, the back grid and the side grid into a three-dimensional grid, and mapping the texture of the plane image to the three-dimensional grid to obtain a three-dimensional model of the modeling object.

The invention discloses an aircraft grid generation method and device based on conformal mapping and topological segmentation, equipment and a storage medium, and relates to the technical field of computational fluid mechanics, and the method comprises the steps: generating a surface unstructured grid according to an aircraft model, carrying out the conformal mapping to a parameter domain plane grid through Ricci flow, and calculating the compression ratio of the surface unstructured grid; if the compression ratio is smaller than a first threshold value, extracting a contour line corresponding to a second threshold value; positioning a triangular grid corresponding to the isoline discrete points in the parameter domain plane grid by using a spatial partitioning algorithm, inserting the discrete points into the grid according to the relationship between the vertex distance and the edge distance, forming a closed internal boundary through a one-dimensional boundary recovery operation, and determining a corresponding region; the area is inversely mapped back to the three-dimensional surface, the surface grid is updated, the mapping and judging steps are repeated until the compression ratio meets the requirement, and the parameter domain plane grid is set as a target aircraft grid, so that the efficiency of generating the aircraft grid is improved.

The invention provides an airspace gridding method and device, equipment and a medium, and the method comprises the steps: collecting an airspace boundary geographic data set, taking a horizontal plane at the lowest altitude of a to-be-gridded region as a base surface, determining an airspace boundary based on a boundary contour point geographic coordinate sequence, and carrying out the upward filling of grids based on the base surface, obtaining a gridded three-dimensional airspace and a two-dimensional projection thereof; respectively determining the maximum value point and the minimum value point of the longitude and the latitude to construct a first plane; carrying out gridding on the first plane; and if a plurality of different height values exist, determining the maximum height point, subdividing the airspace between the minimum height point and the maximum height point to obtain second space grids and codes, and screening the second space grids contained in the three-dimensional polygonal region or intersected with the three-dimensional polygonal region. According to the method and the device, the grids and codes of the height dimension between the area bottom plane grids and the boundary contour points are determined, so that the spatial domain is expanded from 2D to 3D grids, and accurate three-dimensional spatial domain gridding is closed.

The invention discloses a label splicing method after vehicle identification failure in a semi-closed space, and the method comprises the following steps: carrying out the joint calibration of vehicles through a camera and a radar, and endowing each vehicle entering the semi-closed space with an entry label; constructing a plane gridding base map for the semi-closed space, and constructing existence probability distribution of the target vehicle in the base map; if the detection of the target vehicle is lost, predicting and correcting the position of the target vehicle; and when the target vehicle is identified by the radar again, track connection is carried out on the current observation item and the historical base map item with the highest matching degree. The method has the beneficial effects that by introducing a base map track memory and re-recognition matching mechanism, the label information of the vehicle in a multi-radar and multi-camera cooperative scene can be continuously continued. Compared with the problem of re-numbering after shielding or broken identification in a traditional method, the method can effectively reduce the phenomena of track breakage and wrong numbering, and remarkably improves the continuity and reliability of vehicle global tracking.

The invention discloses a dynamic nerve radiation field real-time three-dimensional reconstruction method and device based on window attention and gradient equilibrium, and the method comprises the steps: carrying out the stratified sampling of rays, and obtaining sampling points; projecting the sampling points to six groups of two-dimensional feature planes; querying corresponding feature vectors from the six groups of feature planes through bilinear interpolation, and generating spatio-temporal features through Hadamard product fusion; inputting the fused spatial-temporal characteristics into a decoding network of a Swin Transform, and outputting the color and the volume density of a corresponding sampling point; and carrying out volume rendering integration along the ray of the camera to generate a composite image, and optimizing and updating the model according to a multi-target loss function between the composite image and a real image. The invention aims to solve the problems of large memory consumption, poor rendering quality, long training time and poor geometric consistency in the prior art, and realizes real-time three-dimensional reconstruction of a dynamic scene by using six-plane grid representation, Swin Transform feature generation and a gradient equilibrium mechanism.

The application discloses an aircraft grid generation method and device based on conformal mapping and topological segmentation, equipment and a storage medium, relates to the technical field of computational fluid dynamics, and comprises the following steps: generating a surface unstructured grid according to an aircraft model, conformally mapping the surface unstructured grid to a parameter domain plane grid through Ricci flow, and calculating the compression rate of the parameter domain plane grid; if the compression rate is less than a first threshold value, extracting an isoline corresponding to a second threshold value; locating a triangular grid corresponding to an isoline discrete point in the parameter domain plane grid by using a spatial partition algorithm, inserting the discrete point into the grid according to the vertex distance and edge distance relationship, forming a closed internal boundary through a one-dimensional boundary recovery operation, and determining a corresponding region; inversely mapping the region back to a three-dimensional surface, updating the surface grid, and repeating the mapping and judging steps until the compression rate meets the requirement, and setting the parameter domain plane grid as a target aircraft grid, so that the efficiency of generating the aircraft grid is improved.

The application discloses an aircraft structured grid generation method and device based on dipole regulation, equipment and a storage medium, relates to the technical field of aircraft, and comprises the following steps: mapping a non-structured grid of an aircraft to a plane space corresponding to a parameter domain to obtain a parameter domain plane grid, and determining a compression ratio value between the non-structured grid and the parameter domain plane grid; determining a target feature point set based on the angle values of each dihedral angle in the parameter domain plane grid; generating an initial scalar field based on the compression ratio value, and superimposing a dipole field corresponding to a target dipole on the initial scalar field to form a target scalar field; adjusting a feature parameter corresponding to a target contour line in the target scalar field until the distance between the target contour line and each feature point in the target feature point set meets a preset condition, and then determining the adjusted target contour line as a target feature line to generate a target grid line of the aircraft. In this way, the aircraft structured grid with good orthogonality can be obtained.

The invention relates to the technical field of packaging, and discloses a low-cavity packaging method of a microelectronic component and the microelectronic component, and the method comprises the steps: S1, providing a packaging substrate; s2, preparing solder paste with a first activity grade; s3, uniformly coating the prepared solder paste on an interconnection bonding pad of a packaging substrate; s4, mounting an electronic component on the internal interconnection bonding pad of the packaging substrate; s5, reflow soldering is carried out, welding of the electronic component and the packaging substrate is completed, meanwhile, the solder paste at the external interconnection bonding pad is made to be formed into a plane grid array welding spot structure, reflow soldering is carried out according to a preset temperature curve, the peak temperature of the preset temperature curve is set to range from 240 DEG C to 260 DEG C, and the duration time of a uniform temperature section of the preset temperature curve ranges from 60 seconds to 90 seconds; s6, quality monitoring is conducted through a micron focal spot system, the resolution ratio of the system is smaller than or equal to 5 microns, and the scanning frequency is 10 frames per second. The LGA welding spot void rate can be reduced, and the reliability of the microelectronic assembly is improved.

The present invention relates to the field of image processing, and in particular relates to a method for generating simulated samples of foreign object defects of an overhead power transmission line. The method comprises: forming a sample image of a defect-free overhead power transmission line; constructing a component segmentation network, and extracting masks of different key power components; constructing a coordinate set of line suspension points, and randomly selecting a line suspension point from the set of line suspension points; and performing simple three-dimensional modeling on a foreign object by means of a planar grid, randomly generating a foreign object annotation bounding box in the sample image, and adding a foreign object image and the foreign object annotation bounding box to the sample image, such that the line suspension point and a foreign object suspension point coincide with each other.

Systems and techniques are provided for processing image data corresponding to a scene. A method may include generating a planar distance map including planar distance values for each pixel of at least one image corresponding to a scene. Plane segmentation is performed based on the plane distance map, a normal map corresponding to the at least one image, and position encoding information of the plane distance map. Triangular mesh segments are initialized based on sampling points from each of a plurality of planar segments from planar segmentation. A ray-triangular intersection is determined based on performing ray casting on a reconstructed planar grid comprising a plurality of triangular grid segments, each triangular grid segment corresponding to a different image. A planar reconstruction and segmentation machine learning network is optimized for a scene based on training the planar reconstruction and segmentation machine learning network using one or more loss functions.

A method includes: obtaining and splicing a plurality of frames of point cloud data to obtain a complete point cloud model of an indoor structure; extracting point cloud plane features corresponding to the complete point cloud model, and classifying the point cloud plane features into indoor structure types comprising a floor, a wall, and a ceiling; projecting point cloud data of the wall onto a plane of the floor to generate a planar grid graph; and generating a two-dimensional plane view of the indoor structure based on the planar grid graph.

This invention relates to the field of freeze-drying technology, specifically to an intelligent vacuum freeze dryer and its usage method. The dryer includes a main unit and a pre-freezing vacuum chamber within it, a shelf placed inside the pre-freezing vacuum chamber, the shelf having an internal cavity and a main gas inlet at its bottom for gas to enter the internal cavity; a carrying tray with multiple evenly arranged internal components for storing materials, the tray having multiple planar grids and heating elements for releasing heat, multiple push rods for moving materials within the planar grids, and an adjustment component for adjusting the position of the push rods according to different usage environments; and side rotating columns with multiple evenly rotatable components connected to the sidewalls of the carrying tray, each side rotating column having multiple exhaust ports, and the carrying tray having an efficiency-enhancing component for driving the side rotating columns.

The present application relates to airspace grid planning technical field, especially in kind of low-altitude air route's multiscale grid airspace construction method, equipment and medium, the method includes: obtaining the safety interval and weight coefficient of various low-altitude aircraft, respectively determine the minimum scale, maximum scale of plane grid and height area, from minimum scale to maximum scale range, corresponding to obtain the maximum level number of plane grid and the maximum level number of height area, and the plane grid scale or height area scale of each level, traverse all possible maximum level and several scale sequence scheme corresponding to each maximum level, to represent the required grid number of each type of safety interval weighted sum minimum as the target, select the optimal level number and corresponding each level scale, corresponding multi-level plane grid and multi-level height area are decoupled combination, construct multiscale three-dimensional grid airspace;The present application can improve airspace utilization and low-altitude airspace route planning flexibility under the premise of ensuring operation safety.

The invention provides a multi-stage and multi-region precise ammonia spraying device system for an SCR (Selective Catalytic Reduction) denitration technology and an ammonia spraying flue gas denitration method. The ammonia spraying device system comprises an SCR denitration reactor and an intelligent control system; the SCR denitration reactor is parallel to the flue gas circulation direction and comprises a mixing device and a reaction device; a primary ammonia spraying grid and a static mixer are sequentially arranged in the mixing device in the direction perpendicular to the flowing direction of flue gas; a rectifying grid, a flow velocity plane gridding monitoring system and at least two groups of denitration units are sequentially arranged in the reaction device. The flow velocity plane gridding monitoring system and the intelligent control system are utilized, the ammonia spraying amount of different partitions of different denitration units is synchronously adjusted according to the real-time flow velocity distribution condition, the problems of insufficient denitration efficiency, high ammonia escape and the like caused by uneven flow velocity at a catalyst inlet are solved, accurate supply of ammonia is achieved, the SCR denitration efficiency is guaranteed, meanwhile, the ammonia utilization rate is increased, and the economic benefit is increased. And the purpose of reducing ammonia escape is achieved.

The invention belongs to the technical field of sheet machining, and discloses a sheet plane grid groove cutting device and method.The sheet plane grid groove cutting device comprises a base, an X-axis moving mechanism, a rotation driving mechanism, a workpiece positioning mechanism and a cutting mechanism, the X-axis moving mechanism comprises an X-axis sliding block connected to the base in a sliding mode, and the rotation driving mechanism is arranged on the X-axis sliding block; comprising a workpiece carrying table and a rotary motor driving the workpiece carrying table to rotate around the vertical axis, a positioning groove used for containing a to-be-machined workpiece is formed in the top end of the workpiece carrying table, and a workpiece positioning mechanism comprises a fixing frame arranged on an X-axis sliding block, a movable gland located over the workpiece carrying table and a pressing driving piece connected between the fixing frame and the movable gland. The cutting mechanism comprises a Y-axis moving mechanism, a Z-axis moving mechanism and a multi-saw-blade cutting assembly. According to the multi-groove synchronous cutting device, rapid positioning and multi-groove synchronous cutting can be conducted on thin plate type workpieces, rotating and reversing are convenient, and the problems that in the prior art, the cutting efficiency is low, clamping is difficult, and precision is insufficient can be solved.

The invention provides a stratigraphic structure coupling model parameterized grid generation method, device and equipment, and the method comprises the steps: constructing a lining contour, and determining an inner side line and an outer side line of a coupling region; for the coupling area, the centroid of the lining enclosure surface and the centroid angle of each node on the inner side line and the outer side line are calculated; performing density unification on the inner side line and the outer side line of the coupling area, and performing segmented equipartition and grid point generation on the relatively sparse side lines; generating radial grid points of the coupling region based on a pre-compiled grid size step-by-step gradient segmentation algorithm; and performing plane division on the coupling region to obtain a two-dimensional plane grid or a three-dimensional grid, and generating a target grid model in combination with a lining structure. According to the method, the calculation precision requirement and the calculation efficiency requirement of the numerical analysis model are highly considered, and the problems of large grid division difficulty and poor grid quality in the prior art are solved.

The present application relates to a kind of flat plate fitting setting surface modeling method, comprising the following steps: setting surface is modeled to form original surface, the approximate center point of original surface is analyzed and sought, and first principal curvature direction vector and second principal curvature direction vector are established in the approximate center, with the direction of first principal curvature direction vector and second principal curvature direction vector, plane grid is established, and the plane grid covers original surface;The quadrate flat plate fitting grid of surface fitting is formed to the plane grid, so that the shape of fitting grid tends to the shape of original surface;After fitting, the quadrate flat plate is cut to form fitting surface by several plane units, for subsequent construction production, convenient to use, simple operation, low cost.

The application discloses a method for vehicle identification and label continuation after disconnection in a semi-closed space, comprising the following steps: jointly calibrating vehicles through a camera and a radar, and giving a target label to each vehicle entering the semi-closed space; constructing a planar gridded base map for the semi-closed space, and constructing a presence probability distribution of the target vehicle in the base map; if the detection of the target vehicle is lost, performing position prediction and correction on the target vehicle; when the target vehicle is recognized by the radar again, the current observation item is matched with the historical base map item with the highest matching degree to continue the track. The application has the beneficial effects that: by introducing a base map track memory and re-identification matching mechanism, the label information of the vehicle can be continuously continued in a multi-radar and multi-camera collaborative scene. Compared with the re-numbering problem of the traditional method after occlusion or disconnection, the application can effectively reduce the track breakage and misnumbering phenomenon, and significantly improve the continuity and reliability of the global tracking of the vehicle.

This invention belongs to the field of organic electronic device technology and discloses a planar gate structure longitudinal copolymer organic field-effect transistor and its fabrication method. The longitudinal copolymer organic field-effect transistor structure sequentially includes a substrate, a drain, an organic semiconductor layer, a source, an organic dielectric layer, and a gate, wherein the gate is located on the top layer, the drain is located on the bottom layer, and the source is located on the middle layer. The drain forms a fully covered planar electrode above the substrate. The source and gate are composed of multiple parallel, equally spaced strip electrodes in an interdigitated distribution. The channel length between the source and drain is the thickness of the organic semiconductor layer, which is determined by the concentration of the organic solution and the spin coating speed, and the channel length is 40nm~300nm. Because the gate adopts a planar gate structure, this invention eliminates the need for high-precision etching and photolithography processes, reducing the fabrication difficulty of the longitudinal copolymer organic field-effect transistor.

The invention belongs to the technical field of magnetic positioning, and particularly discloses an RHM-CGA positioning algorithm based on an RHM fusion strategy, and the algorithm comprises the following steps: collecting the magnetic field data of a target magnet through a magnetic sensor array which is of a planar grid array structure; a sparrow search algorithm is used to process the magnetic field data to obtain a first position result, a CNN-GRU-Attention neural network is used to process the magnetic field data to obtain a second position result, and an objective function of the sparrow search algorithm and a loss function of the CNN-GRU-Attention neural network are established according to a magnetic field distribution mathematical model-magnetic dipole model of the target magnet; based on the first position result and the second position result, calculating a fusion position result through a weighting function; the weighting function depends on the Z-axis coordinates of the first position result or the second position result. The application range can be effectively expanded on the premise of ensuring the magnetic positioning precision.

The utility model discloses a planar grid array packaging structure, which comprises a substrate, a first base island, a second base island and a pin bonding pad which are electrically connected are arranged on the front surface of the substrate, a back bonding pad is arranged on the back surface of the substrate, and the pin bonding pad is electrically connected with the back bonding pad; the plurality of first base islands and the plurality of pin bonding pads are arranged on the peripheral side of the second base island; the substrate is plastically packaged in a plastic package body, and a heat dissipation module is further arranged on the back surface of the substrate. Through the planar grid array packaging structure, the technical problem that in a traditional packaging structure, the number of pins, the distance, the heat dissipation performance and the like are gradually difficult to meet the requirements is solved.

The application provides a kind of photovoltaic module deformation fault detection processing method, system and medium. The detection information of the detection point of the photovoltaic module to be detected is obtained;Wherein, detection point is respectively arranged at the position of four corners of the photovoltaic module to be detected;For each detection point, according to the detection information of the detection point and the reference information of the reference detection point, the deformation variable of the detection point is determined;Using grid algorithm, the photovoltaic module is grid processed, and based on the deformation variable of each detection point, the deformation detection processing is carried out on each grid vertex in the plane grid obtained after the grid processing of the photovoltaic module, to obtain the deformation variable of each grid vertex;The grid vertex with deformation variable greater than the preset deformation variable threshold is taken as the deformation fault point. Using the method provided by the application, the efficiency and accuracy of photovoltaic module deformation fault detection can be improved.

The application discloses a kind of volume calculation methods, systems, equipment and medium of point cloud data inside sinkhole, belong to geological disaster investigation and evaluation technical field, by scanning sinkhole internal structure, obtain point cloud data, construct the three-dimensional space of sinkhole;To slice point cloud data on three-dimensional space, project the point cloud data after slicing to two-dimensional plane, obtain two-dimensional point cloud data on xy plane;GiftWrapping algorithm is executed to each two-dimensional point cloud data, obtain two-dimensional point cloud convex hull;The plane where two-dimensional point cloud convex hull is in mesh, judge whether it is complete grid, if it is complete grid, classify grid;Parallelly traverse the grid of each row, by judging the type of each grid, according to different grid type, the volume of the grid of corresponding type is calculated and added, obtain the volume of all grids in the slice;The volume of the grid of all slices is added, obtain the total volume of sinkhole.The method can improve the accuracy of volume calculation.

The invention discloses an aircraft structured grid generation method, device and equipment based on dipole regulation, and a storage medium, and relates to the technical field of aircrafts, and the method comprises the steps: mapping an unstructured grid of an aircraft to a plane space corresponding to a parameter domain, so as to obtain a parameter domain plane grid, determining a compression ratio between the unstructured grid and the parameter domain planar grid; determining a target feature point set based on the angle value of each dihedral angle in the parameter domain planar grid; generating an initial scalar field based on the compression ratio, and superposing a dipole field corresponding to the target dipole on the initial scalar field to form a target scalar field; and adjusting feature parameters corresponding to a target contour line in the target scalar field until the distance between the target contour line and each feature point in the target feature point set meets a preset condition, and determining the adjusted target contour line as a target feature line to generate a target grid line of the aircraft. In this way, the aircraft structured grid with good orthogonality can be obtained.

1. Name of the designed product: chandelier crystal accessory (48 plane grid). 2. Use of the designed product: used for chandelier decoration accessories. 3. Design points of the designed product: in shape. 4. Picture or photo that best shows the design points: perspective view.

The invention relates to a planar gate IGBT (Insulated Gate Bipolar Translator) device with high short-circuit capability and a manufacturing method thereof, which are characterized in that on the basis of the preparation of a conventional planar IGBT, the forming step of a P-type well region is adjusted, that is, after phosphorus injection and junction pushing of an active region are completed, photoetching and boron ion injection of P-type well region injection are carried out, and then the growth of a gate oxide layer is carried out; depositing and etching a polycrystalline silicon grid electrode; and injecting an N + emitter electrode and the like. According to the invention, the P-type well region is formed in front of the polycrystalline silicon gate, so that the length and morphology of the channel can be flexibly controlled, the saturation voltage drop of the device is not influenced, the saturation current of the device can be obviously reduced, and the short-circuit tolerance time of the device is greatly prolonged.

The invention discloses a parameter-adaptive transformer winding grid model construction method and device, and relates to the field of digital modeling, and the method comprises the steps: measuring each surface parameter of a transformer winding, determining the node density through a calculation method curvature, and carrying out the isoline division according to the node density; boundary points are obtained from the selected points along isolines in all directions, a region boundary chain is formed through sorting, the selected points and the boundary points are connected to generate a first sub-region, and traversal is carried out to complete curved surface grid division. Connecting two adjacent points of the boundary chain to form a second sub-region, and traversing all boundary points to form a planar grid; and fusing the curved surface grid structure and the plane grid structure, establishing a winding grid model, and updating the grid model library. According to the method, model attributes are adaptively controlled through parameters, grid division is optimized according to node density, distribution of grid density is optimized, representativeness of the grid model library is improved, adaptability and sharing efficiency of the grid model are improved by updating the grid model library, and loading and processing in different software and hardware environments are facilitated.

This invention provides a method for adjusting the size of a planar mesh model while preserving chamfer features, comprising the following steps: S1, inputting a planar mesh model; S2, extracting planar information from two adjacent planes P1 and P2 that form a chamfer with the plane to be moved P0; S3, establishing a coordinate system x according to the right-hand rule based on the extracted planar information. 0 y 0 z 0 x 1 y 1 z 1 S4. Determine the region of mesh nodes to be moved based on the established coordinate system; S5. Use the node-moving slicing method to move all nodes within the mesh node region; S6. After updating the coordinates of all nodes to be moved, output the adjusted planar mesh model. This invention can move nodes in adjacent areas of a plane using a slicing method, achieving rapid adjustment of the planar dimensions without needing to modify the planar position and re-mesh in 3D modeling software. In analyses related to planar dimensions, sensitivity, reliability, etc., only one meshing is required, improving analysis efficiency.

The application discloses a kind of automatic cutting method and system of 3D model in VR environment, and the method steps include: constructing plane grid in VR environment and combining splicing to form the 3D model drawing board of specified size;Draw circular cutting size, as the minimum cutting size in cutting operation path;According to circular cutting size, cutting is carried out, and multiple path points are generated until the motion trajectory forms closed graph;Motion trajectory is converted into the vertex of plane geometric figure;According to the vertex of plane geometric figure obtained by conversion, the cutting clipping area is determined;When internal shaping cutting is carried out, according to the cutting of each path point generated on 3D model drawing board;When outer contour cutting is carried out, according to the cutting of determined cutting clipping area on 3D model drawing board, the cutting of final target model is completed.The application has the advantages of simple implementation method, high real-time and authenticity, strong flexibility, can present dynamic cutting model simulation process and the like.