339 results about "Building model" patented technology

The invention discloses a collision detection method and a computer readable storage medium. The collision detection method comprises the following steps: determining all static components belonging to a preset static type and all dynamic components belonging to a preset dynamic type in a three-dimensional building model; static SDF data are constructed for all static components in the three-dimensional building model; wherein the static SDF data comprises a plurality of static SDF values, and the static SDF values are SDF values from a space point in the three-dimensional building model to the surface of the nearest static component; constructing dynamic SDF data for all dynamic components in the three-dimensional building model; wherein the dynamic SDF data comprises a plurality of dynamic SDF values, the dynamic SDF values are SDF values from a space point in a dynamic influence area to the surface of a dynamic component used for generating the dynamic influence area, and the dynamic influence area is obtained after the boundary of a minimum three-dimensional bounding box of the dynamic component is expanded outwards by a first preset distance; and detecting whether a collision point exists in the three-dimensional building model based on the static SDF data and the dynamic SDF data.

The invention discloses an urban low-altitude landing risk assessment method based on three-dimensional space grids, and belongs to the technical field of low-altitude flight risk assessment. The objective of the invention is to solve the problem of accurate assessment of the low-altitude falling risk in a complex city scene. The method comprises the steps of performing three-dimensional rasterization processing on a low-altitude airspace of an evaluation airspace to obtain voxels of the evaluation airspace, and obtaining a voxel set of the evaluation airspace; building shelter formed by population density grids or mobile signaling inversion population, sensitive facility vectors, tree canopy shielding and three-dimensional building models is quantified, values are assigned to voxels of an evaluation airspace, and a voxelization environment parameter database covering the whole domain is obtained; constructing an aircraft failure rate model; carrying out an aircraft falling trajectory uncertainty simulation test to obtain landing coverage probability density distribution and tail end speed of the aircraft; and carrying out voxel risk synthesis by considering the probability of collision with people, and carrying out risk grading on the obtained voxel risk, thereby completing urban low-altitude landing risk assessment based on the three-dimensional space grid.

The invention relates to the technical field of image processing, and discloses a house quality detection method and system based on a live-action three-dimensional model. The method comprises the following steps: converting an OSGB format live-action three-dimensional building model into a body coordinate system and carrying out quality evaluation, carrying out semantic segmentation on a standardized model to obtain a component geographic entity set, establishing an independent local coordinate system of each component to form a single three-dimensional model set, generating a multi-view projection feature image set based on a normal vector distribution planning view angle, and carrying out multi-view projection on the single three-dimensional model set. And detecting defects by adopting a 3D-YOLO-BuildingDefect algorithm, and carrying out inverse transformation to obtain three-dimensional space defect distribution and a quality grade evaluation result. The technical problems that a traditional two-dimensional detection method is insufficient in spatial positioning precision, incomplete in detection coverage rate and insufficient in geometric information utilization are solved, and the spatial positioning accuracy of house quality detection and the comprehensiveness of defect recognition are improved.

The invention belongs to the technical field of environmental risk assessment, and particularly discloses a BIM-based fabricated steel structure assembly scheme comparison and selection method and system, and the method comprises the steps: building a three-dimensional building model based on BIM software, and extracting component information and GIS data; establishing national and local standard libraries, matching applicable standards through building positioning information, and generating parameterized assembly rules; generating a plurality of assembly type combination schemes according to rules and component logic, and interactively binding with the BIM model; calculating an assembly rate and a standard score of each scheme, and screening candidate schemes meeting structural safety and a cost threshold value; and constructing an incremental cost library, completing cost difference analysis of the candidate schemes, and outputting an optimal assembly type steel structure combination scheme. And data driving and automatic comparison and selection in the whole process are supported, the method can be applied to prefabricated building scheme design and optimization links, and the design efficiency and the scheme economy are improved.

A construction process support system that enables diverse users to quickly and intuitively create construction model data according to their intentions using natural language input and grid-based positioning. The system comprises hardware processors, software modules, and databases configured to display user interface pages to terminals and control natural language input messages. When input messages contain grid labels that specify coordinates on pages with character codes regarding construction structures, the system requests a Large Language Model (LLM) to generate instruction codes describing construction model data including the grid labels as position information. The LLM generates the requested instruction codes. The system stores the construction model data as searchable data in the database, forwards input messages to chat areas, and renders each structure as three-dimensional data at grid label positions on page canvases.

The invention provides a traffic organization method and system based on urban traffic transfer efficiency evaluation, and the method comprises the steps: building a building model based on a pre-obtained urban traffic building space, setting an initial traffic organization scheme of traffic nodes, simulating the movement behaviors of passengers at each traffic node through a social force model, and carrying out the simulation of the passenger movement behaviors at each traffic node; obtaining passenger flow simulation data; setting an initial weight for the factor set based on the evaluation model to obtain a comment set; and dynamically adjusting the initial weight of the factor set based on the passenger flow simulation data and the evaluation model to obtain the target weight of the factor set, calculating the comprehensive association degree in combination with the comment set, and obtaining the urban traffic transfer efficiency evaluation result according to the comprehensive association degree to adjust the initial traffic organization scheme. And obtaining a target traffic organization scheme to organize urban traffic. According to the method, different passenger flow scenes are simulated to dynamically adjust the weight of the evaluation index, the urban traffic transfer efficiency level under the multi-factor interaction influence is quantified, and the reliability of a traffic organization scheme is improved.

The invention relates to the technical field of building three-dimensional modeling, and provides an ALS point cloud facade geometry-based LLO3-level-tending building three-dimensional model automatic reconstruction method, which comprises the steps of 1, building point cloud segmentation and bottom contour construction: segmenting a roof and facade area from an ALS point cloud, and constructing a bottom contour; automatically extracting the bottom contour of the actually grounded building through the vertical projection of the facade point cloud; step 2, door and window contour extraction based on facade geometry: projecting the facade point cloud into a two-dimensional image, identifying a door and window opening by using an Alpha Shape construction and geometry-semantic detection method, and extracting a door and window contour; and step 3, building a three-dimensional building model with enhanced facade details: inputting the bottom contour and the door and window contour into a modeling frame, and automatically embedding door and window components through polygonal surface patch combination and Boolean operation to generate a building model with a complete structure and semantic details. According to the method, the three-dimensional model of the building tending to the LOD3 level can be better and automatically reconstructed based on the ALS point cloud.

The invention discloses a method for detecting the state of an earthing knife circuit breaker based on deep learning and a key point detection calculation technology, and relates to the field of power equipment detection, and the method comprises the steps: collecting a visible light image; performing data enhancement processing; building a deep learning model and improving the model; an improved EDC-YOLO model is introduced and a GeoKeyNet method for key point geometric feature calculation is combined, accurate state judgment can be carried out on obvious and easily-recognized key points on a grounding knife switch, and particularly under the condition that some grounding knives have small displacement, key point detection can effectively capture subtle changes, so that the opening and closing state of the grounding knife switch is accurately recognized, and the detection accuracy of the grounding knife switch is improved. The method not only makes up the limitation of traditional sensor monitoring, but also provides an efficient, accurate and automatic monitoring scheme especially under the condition that subtle changes cannot be fully captured and comprehensive monitoring cannot be achieved, and the monitoring precision and the working efficiency of the grounding knife-switch circuit breaker can be remarkably improved.

The invention relates to the technical field of path planning, in particular to a path planning method and device for a construction site, computer equipment and a storage medium, and the path planning method comprises the steps: constructing a static three-dimensional model according to a building model and topographic data of the construction site; acquiring obstacle data in the construction site in real time, and mapping the obstacle data into the static three-dimensional model to obtain a dynamic three-dimensional model; establishing a path search graph model according to the dynamic three-dimensional model; performing path planning through the path search graph model and a preset ant colony algorithm; in the path planning process, the probability of selecting the next path is determined by the pheromone concentration, the heuristic factor and the straight line guide factor at the same time. According to the embodiment, the transportation path can be dynamically adjusted according to the construction environment, so that the construction site transportation efficiency is improved.

The invention relates to the technical field of building models, in particular to a BIM-based building construction drawing design model construction method. The method comprises the following steps: extracting three-dimensional space coordinates and construction attributes of a component from a preset BIM building design model, wherein the construction attributes comprise layered material information of the component and the material thickness of each layer; projecting the three-dimensional space coordinates of the component to a two-dimensional view plane to generate a two-dimensional projection contour; calculating the vertical distance from the component to the view plane, and determining the display level of the component according to the size of the vertical distance; and identifying a construction node position on the two-dimensional projection contour, matching the construction node position with the construction attribute, and generating a detailed drawing index mark at the construction node position according to a matching result. According to the space distribution and the sideline direction of the blank area, the size marking lines are automatically generated, the reasonable spacing is kept, and the problems of shielding and overlapping are avoided.

The invention relates to the technical field of urban building energy consumption calculation, in particular to an urban building energy consumption calculation method and device based on local weather data, and the method comprises the steps: obtaining local built environment information data of a local climate region, and calculating local weather data through the local built environment information data; the two-dimensional building boundary vector graph in the local climate area is converted into a three-dimensional building model, and an urban building energy consumption model with building prototype information is constructed based on building functions and years; and distributing the local weather data to a subdivided local climate grid corresponding to the urban building energy consumption model to calculate the urban building energy consumption of the building group. Therefore, the problem that the calculation efficiency and precision of the urban building energy consumption cannot be effectively guaranteed due to the fact that the resolution ratio of a local weather grid cannot be freely defined, the local built environment cannot be subdivided, and the difference of different local climate heat island effects cannot be represented in the prior art is solved.

The invention discloses an air energy heat pump unit control method and device, a storage medium and a server, and relates to the technical field of heat pump units. The method comprises the steps that the future outdoor temperature corresponding to an air energy heat pump unit is determined; a preset building model is adopted for calculation according to the future outdoor temperature, and the required heating capacity is obtained; when the future outdoor temperature is larger than a preset outdoor temperature, an adjustment coefficient is calculated according to the required heating capacity and a reference heating capacity, and the reference heating capacity is obtained through calculation according to the preset outdoor temperature by adopting the preset building model; and the actual set water temperature is corrected according to the adjustment coefficient and the preset temperature difference, the corrected set water temperature is obtained, and the air energy heat pump unit is controlled to conduct heating operation according to the corrected set water temperature. The water temperature can be reliably and dynamically adjusted and set, the operation energy consumption of the air energy heat pump unit is reduced, and the heat supply effect of the air energy heat pump unit is guaranteed.

1. Name of the designed product: building model (Gothic and neoclassical fusion). 2. Use of the designed product: for building model. 3. Design points of the designed product: in shape. 4. Picture or photo that best shows the design points: perspective view.

1. Name of the design product: building model (public toilet 001). 2. Use of the design product: the design product is a design and planning model of a public toilet building. 3. Design points of the design product: in shape. 4. Picture or photo that best indicates the design points: perspective view. 5. Not common, omit the top view.

The invention provides a building model remodeling method and device and a building model rendering method and device, and relates to the technical field of map data processing. Gridding the initial building model to obtain a plurality of mesh surfaces, each mesh surface being formed by connecting at least three spatial vertexes; determining an external mesh surface located on the surface of the initial building model from the plurality of mesh surfaces; and remodeling the target building model corresponding to the initial building model on the basis of the space vertexes corresponding to the external grid surface, so that the surface with the exposed structure edge is kept by removing the internal redundant interpenetrating structures in the initial building model, the interference of internal redundant data is effectively avoided, and the construction efficiency is improved. And unnecessary data processing is reduced in the rendering process, so that the rendering rate of the model can be improved.

1. Name of this design product: Architectural Model (Guanjingting). 2. Purpose of this design: A model of a building or house. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

An example method performed by a processing system includes obtaining a light detecting and ranging point cloud of a building, where the point cloud includes a plurality of points, and where each point is associated with a set of (x,y,z) coordinates. A first point of the plurality of points is assigned to a subset of the plurality of points that is associated with the building, where the subset includes points whose (x,y) coordinates fall within a footprint of the building. The first point is grouped into a first cluster according to at least one of: a (z) coordinate of the first point and a gradient to which the first point belongs. A first prism formed by the first cluster is constructed. A model of the building is stored as a plurality of connected prisms, where the plurality of connected prisms includes the first prism.

The utility model discloses a teaching display device for a building model of constructional engineering, belongs to the technical field of teaching tools, and aims to solve the problems that the conventional display device is relatively inconvenient to fix and disassemble, and the display is not comprehensive enough. A building engineering building model teaching display device comprises a display mechanism which comprises a display stand, and a clamping assembly is arranged in the display stand; the rotating mechanism comprises a driving assembly, a limiting assembly is arranged on the display table, two sets of flexible clamping plates are manually pushed inwards, so that the middle distance is increased, a model body is placed on a mounting block, and under the action of a high-pressure spring, a second sliding rod slides towards one side in a sleeve; the flexible clamping plates on the two sets of connecting blocks move relatively, the model body in the middle is clamped and fixed, fixing and dismounting are convenient, the model body can be better protected, meanwhile, due to the contractibility of the high-pressure springs, clamping is suitable for models of different sizes, and the application range is larger.

The invention relates to the technical field of illegal building identification, and discloses a cloud rendering-based high-altitude protruding illegal building identification monitoring method and system, and the method comprises the steps: generating a building dense point cloud model of a target building, and carrying out the meshing of the model; generating a building facade view of the three-dimensional building model, and extracting material features and structural features of any building facade in the building facade view; constructing a building illegal building identification model to carry out illegal building identification and illegal building marking on the building facade to obtain an illegal building facade; and performing dynamic area growth and segmentation processing on the facade of the illegal building by adopting a dynamic growth algorithm to form an illegal building area, and generating and recording a positioning coordinate of the illegal building area and an illegal building type. According to the method, the three-dimensional building model is generated based on the multi-angle RGB-D data, the facade material and structure features are extracted, automatic identification, positioning and classification of high-altitude protruding illegal buildings are realized through illegal building identification and a dynamic segmentation algorithm, and the monitoring precision and the automation level are improved.

The application discloses a kind of building energy-saving scheme intelligent generation method based on two-stage agent-assisted evolution, belong to building energy-saving field, according to resident building model decision variable and range, generate uniform feasible solution with rejection sampling method, and the real target value obtained by EnergyPlus simulation is stored in sample set DB;Uniformly construct reference vector in target space and divide space, DB sample is divided into corresponding vector file according to the nearest distance, and the initial RBF global agent model is constructed.The first stage selects the crowding density minimum non-dominated solution from each vector file as the initial population, evaluates the individual using the global agent model, fills the solution according to the rules, updates the local agent model, and enters the second stage when the hyper volume increment value is greater than the threshold value, otherwise directly enters S5, and the second stage dynamically updates the reference vector according to the solution quality.The application uses the above method, by combining agent model and phased evolution strategy, significantly improves the efficiency and accuracy of building energy-saving optimization.

The application relates to a kind of city building agent reconstruction methods based on aerial image.The method comprises: obtaining the multi-view image corresponding to target building;Multi-view image includes near vertical view image and inclined view image;According to near vertical view image, the bottom contour of target building is determined;Determine the first depth difference between each pixel point in inclined view image;According to the camera pose parameter of multi-view image and the current predicted height of target building, rendering is carried out, and the rendering depth map of target building under the current predicted height is obtained;With the distance between the second depth difference of each pixel point in the rendering depth map and the first depth difference as the optimization target, the current predicted height is optimized, and according to the bottom contour and target measurement height, the three-dimensional building model corresponding to target building is constructed.Using the method can improve the efficiency and accuracy of city building agent reconstruction.

The application provides a high-rise building earthquake response real-time prediction method, device and equipment for earthquake warning, which comprises the following steps: obtaining strong motion data, a target high-rise building model and building attributes of the target high-rise building model; extracting seismic motion parameters and earthquake parameters from an initial seismic waveform of the strong motion data; the seismic motion parameters comprise peak acceleration, peak velocity, cumulative absolute velocity, important duration and Arias intensity; the earthquake parameters comprise magnitude, epicentral distance and site parameters; inputting the seismic motion parameters, the earthquake parameters and the building attributes into a high-rise building earthquake response real-time prediction model to obtain an earthquake response, and making a warning according to the earthquake response. The method, device and equipment provided by the application can predict the earthquake response of a high-rise building in real time, efficiently and accurately, provide important technical support for earthquake warning and disaster risk reduction, and have good practical value and wide application prospect.

The present application relates to a kind of method for realizing rural landscape management based on oblique photography and image recognition technology, which utilizes oblique photography and image recognition technology to extract and manage the landscape of rural buildings. Specifically, the present application forms a three-dimensional real scene model and an orthographic image by oblique photography technology, then extracts the buildings by the technical method of image recognition classification supervision, and combines linear regression calculation to optimize the building range line, establishes building model and data archives. Based on this, it summarizes the landscape parameters, discriminates the landscape coordination of new buildings, and discriminates the landscape coordination of village construction changes. The present application can quickly collect and identify the rural landscape situation, realize multi-dimensional management of rural construction and the establishment of landscape control standards, build a rural landscape management system, and also can conveniently and efficiently complete the dynamic update of village landscape situation, realize the dynamic supervision of village landscape.

This application relates to the field of bag design technology, and particularly to a method, apparatus, and equipment for building models for bag design. The method includes: determining the shape features of bag components; determining paper grid parameters based on the component shape features; obtaining core structural features and at least one variable component feature based on the paper grid parameters; determining the compatibility probability between the core structural features and the core structural features and the at least one variable component feature; generating at least one bag design model based on the compatibility probability; and obtaining a bag optimization model based on the at least one bag design model. Therefore, the bag design model building method provided by this application can solve the problem that existing technologies cannot achieve quantitative prediction of the process feasibility of different component combinations during the design stage, thus making it difficult to get rid of the dependence on physical prototyping.

The application discloses an automatic control system and method of intelligent high-altitude operation and maintenance equipment, and the automatic control system comprises a control module, an analysis module, a cleaning module, a moving module and an identification module. The analysis module is used for analyzing a building model and forming an optimal cleaning path, the control module is used for controlling the moving module to move, the moving module drives the cleaning module and the moving module to move, the cleaning module is used for cleaning, and the identification module is used for detecting and identifying water leakage of the sealing strip. The analysis module marks the identified water leakage points and plans an optimal path for repairing the water leakage points for repair. Through the above steps, the automatic control of the intelligent operation and maintenance equipment is realized, and efficient and high-quality automatic operation and maintenance are realized.

The application provides an ancient building repair intelligent interaction method and system based on image feature recognition, wherein the method comprises the following steps: acquiring multi-angle images of a target ancient building needing repair; extracting image features of the multi-angle images and determining repair content; performing three-dimensional reconstruction based on the multi-angle images, acquiring a three-dimensional reconstruction model, and labeling the repair content in the three-dimensional reconstruction model; acquiring a repair progress of a repair personnel; and automatically adjusting a model angle of the three-dimensional reconstruction ancient building model according to the repair progress for the repair personnel to view. The ancient building repair intelligent interaction method and system based on image feature recognition extract image features of multi-angle images of a target ancient building, determine repair content, perform three-dimensional reconstruction on the multi-angle images, label the repair content in the three-dimensional reconstruction model, acquire an ancient building model, automatically synchronously adjust a model angle of the ancient building model based on the acquired repair progress of a repair personnel, and enable the repair personnel to view, which is more convenient and intuitive.

This invention relates to the field of architectural design technology, specifically to a microclimate prediction method, apparatus, device, and medium based on machine learning. The invention first sets design values ​​for the architectural design variables of a single building, and then applies a machine learning model to these design values ​​to predict the microclimate changes that the single building, designed based on these values, will bring to the surrounding environment. Because this invention is based on the design values ​​of a single building, it can predict the impact of a single building on the microclimate of its surrounding environment. Furthermore, using a machine learning model to predict microclimate does not require spending a significant amount of time building a building model; it can directly predict microclimate, thereby improving prediction efficiency.

The invention discloses a deep learning-based area simplification method for a three-dimensional building model, and relates to the technical field of computer graphic processing. According to the method, an original building three-dimensional grid model is preprocessed, vertex semantic features are extracted through a graph convolutional neural network, and regional importance scores between 0 and 1 are generated; integrating scores into surface collapse algorithm error measurement, and constructing a dynamic collapse priority queue in combination with a normal change penalty term; updating an adjacent vertex error and a queue position based on queue iterative collapse; and stopping when the double termination thresholds are met, and outputting the simplified model. According to the method, key areas such as doors and windows, roof edges and the like can be accurately reserved, model lightweight and visual fidelity are balanced, a multi-source input model is adapted, manifold topology is kept, and simplified intelligence and universality are improved.

The application discloses an energy-saving and environment-friendly building model forming device based on BIM technology, and relates to the technical field of building model forming, which comprises a mud conveying device, a pipeline, a control rod and a motor. The mud conveying device is connected with a conveying component through the pipeline. The conveying component is connected with a control component and an auxiliary component respectively. The motor is connected with the control component. The conveying component comprises a cleaning assembly. The auxiliary component comprises an eliminating assembly and a smoothing assembly. The control component drives the conveying component and the auxiliary component. The control component provides kinetic energy for the working of the conveying component and the auxiliary component. The conveying component drives the auxiliary component in cooperation with the control component during the mud conveying work. The auxiliary component reduces the generation of air bubbles during the mud pouring, reduces the influence of the mud pile on the building model forming, improves the quality and strength of the model after forming.

The present application relates to digital twin technology, and discloses a building model optimization method and system based on digital twin, which comprises the following steps: obtaining the geometric and material optical property data of the building model, and constructing a digital twin model; placing the model in a three-dimensional space, generating dynamic simulated sunlight in combination with the latitude and longitude of the target building, calculating the light reflection data, calculating the daylighting efficiency value of each target area according to the data, obtaining the daylighting window structure parameters, and performing adaptive iterative adjustment on the window structure and surface material of each area based on the preset constraints, efficiency value and structure parameters to generate model adjustment parameters; and synchronously adjusting the original building model according to the parameters to finally obtain an optimized building model. The present application can improve the efficiency and applicability of building daylighting optimization for building models.