Method for automatically generating vertical power distribution system diagram based on BIM (Building Information Modeling) in forward design

Abstract

The invention provides a method for automatically generating a vertical power distribution system diagram based on BIM in forward design, and relates to the technical field of building electrical, comprising the following steps: performing intelligent analysis on a building BIM three-dimensional model of forward design, and accurately identifying electrical professional components; key data of the distribution boxes are extracted, and a three-level electrical system topology network of a total distribution cabinet, layer distribution boxes and terminal distribution boxes is constructed; standardized data are generated through multiple verifications of data formats, logic relations and parameter thresholds; automatic drawing output is achieved in a tiled mode and an aligned mode, and a bidirectional linkage mechanism of a BIM model and a system drawing is established. The method aims at solving the problems that traditional AutoCAD two-dimensional manual drawing is low in efficiency, disordered in version management, lack of three-dimensional space expression and insufficient in design accuracy.

Description

Technical Field

[0001] This invention relates to the field of building electrical technology, and in particular to a method for automatically generating vertical power distribution system diagrams based on BIM in forward design. Background Technology

[0002] Vertical power distribution system diagrams (also known as trunk power distribution system diagrams or power distribution trunk diagrams) are key drawings in building electrical design. Their core function is to clearly express the vertical power supply relationship of the power distribution system. Specifically, they include the hierarchical relationship between distribution boxes (cabinets) (such as main distribution cabinet → floor distribution box → terminal distribution box), cable / busbar specifications and laying methods, and other core information. They are an important basis for the construction and operation and maintenance of building electrical systems.

[0003] In the field of building electrical design, the early and traditional design stages mainly adopted the pure manual drawing mode in the AutoCAD two-dimensional environment. Its design process and operation have significant limitations: designers need to first read the two-dimensional CAD plan drawings of the building structure, then manually draw the graphics and legends in the vertical power distribution system, then rely on manual observation and judgment to determine the connection relationship between the equipment, and finally manually complete the drawing of the system schematic diagram through CAD software.

[0004] This traditional design pattern has many technical problems and shortcomings: 1. Low design efficiency: Drawing a vertical power distribution system diagram for a single project usually takes 40-60 man-hours. Designers need to invest a lot of time and energy in performing repetitive and mechanical drawing operations, which takes away their time for core design optimization. 2. Chaotic version management: When the design scheme changes, the drawing adjustments must be completed entirely manually, which not only increases the workload, but also easily leads to inconsistencies in the data of different versions of drawings due to omissions in manual operation; 3. Lack of three-dimensional spatial representation: Two-dimensional hand-drawn drawings cannot present the three-dimensional spatial relationship of the power distribution system, making it difficult to intuitively reflect the spatial compatibility between equipment and building structure, which may create hidden dangers for subsequent construction. 4. Insufficient design accuracy: Key information such as the connection relationships and quantities of equipment relies on manual memory and reading, which can easily lead to judgment errors or data recording errors, affecting the reliability of the power distribution system design. Summary of the Invention

[0005] In view of this, the purpose of this invention is to provide a method for automatically generating vertical power distribution system diagrams based on BIM in forward design. By intelligently parsing the 3D building model using BIM to extract key data of the power distribution box, and relying on the tile / alignment dual drawing mode, one-click drawing, two-way linkage and multiple verification mechanisms, it solves the problems of low efficiency, version disorder, lack of 3D expression and insufficient accuracy of traditional 2D manual drawing.

[0006] The technical solution adopted by this invention to solve its technical problem is: This provides a method for automatically generating vertical power distribution system diagrams based on BIM in forward design; including the following steps: S1. Intelligent analysis of the building BIM 3D model in the forward design process to accurately identify electrical components in the model; S2. Automatically extract key data of distribution boxes in electrical components using algorithms. Construct a complete electrical system topology network based on the extracted distribution box hierarchy, power supply range and circuit connection method. The key data includes at least the spatial location information of the distribution boxes, equipment parameters, interconnection relationships and hierarchy. S3. Process the raw key data extracted in step S2. First, automatically identify and mark abnormal data points through standardization checks. Then, use a multi-verification mechanism to remove invalid data or correct deviation data to generate standardized data that meets the basic requirements for map output. S4. Based on the standardized data in S3, call the built-in building electrical industry symbol library and annotation rule library to generate a vertical power distribution system diagram through either a tiled or aligned drawing mode: If it is a flat layout, after traversing and reading the building floor information, the distribution boxes are arranged sequentially by floor, and the final value of the upper distribution box is drawn horizontally as the initial value of the lower layer. The vertical connection path between the distribution room and the distribution box is restored and industry standard legends are marked. The power of the distribution box and the cable specifications are marked before the drawing is generated. If the alignment method is used, after defining the names of the floor main meter box and indoor lighting box, the floor information is read through and various types of distribution boxes are extracted. The distribution boxes are sorted by function and the building floors are arranged from top to bottom. The cable length and specification differences between distribution boxes on different floors in the same column are calculated and marked. After marking the distribution box parameters, the drawing is generated. S5. Bind the vertical power distribution system diagram generated in S2 with the BIM 3D model data to achieve bidirectional data association between the drawings and the 3D model. When the parameters of any distribution box in the BIM model are modified, the corresponding data and graphic representation in the drawings are updated synchronously. When the data or graphics in the drawings are adjusted, the changes are fed back to the BIM model in real time and the corresponding electrical component parameters are corrected to ensure the consistency of the design data.

[0007] Preferably, the "flat drawing mode" in step S4 further includes: this mode is applicable to building types with ≤10 floors, ≤20 distribution boxes, clear functional zoning, and simple power distribution structure; when synchronously restoring the vertical connection path between the power distribution room and the distribution boxes on each floor, the system automatically matches the actual laying method of the cable / bus and marks the corresponding building electrical industry standard legend.

[0008] Preferably, the "aligned drawing mode" in step S4 further includes: the distribution box function types specifically cover residential indoor distribution boxes, commercial outlet distribution boxes, public lighting boxes, emergency lighting boxes, decorative lighting boxes, and ordinary elevator control boxes; when sorted by function, each column only displays the same type of distribution box, the function type name is marked at the top of the column, and the floor number is marked on the side when sorting by building floors; the calculated and marked differences in cable length and specifications between distribution boxes on different floors in the same column can be directly used for construction quantity statistics.

[0009] Preferably, the "two-way linkage mechanism" in step S5 is as follows: when the parameters of any distribution box in the BIM 3D model are modified, the system automatically identifies the scope of influence of the parameter change and synchronously updates the corresponding data and graphic representation in the vertical power distribution system diagram; when the data or graphics are adjusted in the vertical power distribution system diagram, the changed content is fed back to the BIM 3D model in real time, and the corresponding electrical component parameters in the model are adjusted synchronously to ensure the consistency of the design data.

[0010] Preferably, the "multi-verification mechanism" in step S3 specifically includes data format verification, logical relationship verification, and parameter threshold verification; wherein, data format verification is used to match the field format of the vertical power distribution system diagram output data specification and eliminate invalid data with inconsistent formats; logical relationship verification is used to verify the rationality of the correspondence between the distribution box hierarchy and the power supply range, and correct logical errors such as "the terminal distribution box supplies power to the main distribution cabinet"; parameter threshold verification is used to screen abnormal data where equipment parameters exceed the threshold of the building electrical industry standard and prompt the user to correct the deviation data.

[0011] Preferably, step S2, "constructing a complete electrical system topology network", specifically includes: based on the extracted distribution box hierarchy, power supply range, and circuit connection method, constructing a three-level vertical power supply logic network of "main distribution cabinet → layer distribution box → terminal distribution box". In the topology network, the power supply range, cable / bus connection path, and specification parameters of each level of distribution box are presented in a visual form. The installation height of the distribution box and the fire compartment information of the distribution box are associated with the corresponding distribution box node. When the mouse hovers over the node, the complete data can be displayed, providing additional reference for design review and construction handover.

[0012] Preferably, the "built-in building electrical industry symbol library and annotation rule library" in step S4 can automatically adjust the drawing expression method according to the drawing requirements of different regions and design institutes, and intelligently add necessary annotations and explanations such as power distribution box power, cable specifications, and laying method, so as to achieve the automated effect of "one-click trigger to complete the whole process of drawing".

[0013] Preferably, the "key data of the distribution box" extracted in step S2 also includes the installation height of the distribution box and the fire compartment information to which it belongs; when the electrical system topology network is visualized, the installation height and fire compartment information will be associated with the corresponding distribution box node, and the complete data can be displayed when the mouse hovers over the node, providing additional reference for design review and construction handover.

[0014] A server is also provided, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the method described above for automatically generating vertical power distribution system diagrams based on BIM in forward design, and simultaneously completes the visualization rendering of the electrical system topology network when executing step S2, and calls the built-in symbol library and annotation rule library when executing step S4.

[0015] A computer-readable storage medium is also provided, storing computer-executable instructions, wherein the computer can execute the method described above for automatically generating vertical power distribution system diagrams based on BIM in forward design, and supports format export of the vertical power distribution system diagrams generated in step S4.

[0016] The beneficial effects of this invention are: This invention provides a method for automatically generating vertical power distribution system diagrams based on BIM in forward design. Through intelligent analysis of the building's BIM 3D model in forward design, it automatically identifies electrical components and extracts key data such as the spatial location of distribution boxes, equipment parameters, installation height, and fire compartments. Combined with a dual-output mode (tiled and aligned) adapted to different scenarios, and a built-in industry-standard symbol library and annotation rule library, it achieves "one-click output," completely replacing manual repetitive drawing and annotation. This significantly shortens the traditional 40-60 man-hour output cycle for a single project, freeing up designers' core optimization efforts. Regarding data consistency, a two-way linkage mechanism is established between the BIM model and the system diagram. Modifications to parameters in either model automatically identify the scope of impact and update synchronously, avoiding the problems of inconsistent design versions and data inconsistencies common in traditional designs. In terms of 3D representation, a visual topology network of "main distribution cabinet → floor distribution box → terminal distribution box" is constructed, linking equipment space and fire protection information. This compensates for the inability of 2D drawings to present spatial adaptability, assisting in design review and construction handover. In terms of accuracy, invalid data is eliminated and deviations are corrected through multiple checks on data format, logical relationships, and parameter thresholds. Necessary annotations are intelligently added to avoid human error and ensure that the design is compliant and reliable. Attached Figure Description

[0017] Figure 1 This is a flowchart of the present invention.

[0018] Figure 2 This is a diagram of the vertical power distribution system of the flat-lay method of the present invention.

[0019] Figure 3 This is a diagram of the vertical power distribution system according to the alignment method of the present invention. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Detailed implementation steps: as follows Figures 1-3 As shown Step S1: Using the BIM 3D model that has been completed in the forward design for electrical engineering as the data source, the component feature recognition algorithm is used to distinguish electrical components from building structural components, laying the foundation for subsequent data extraction and avoiding interference from non-electrical components.

[0022] During implementation, pre-modeling using 3D architectural software such as Revit and Bentley is required. The model should include electrical components such as distribution boxes, cables, and busbars, and basic component parameters, including the power and specifications of the distribution boxes, should be entered to meet the basic requirements for data extraction. After starting the corresponding computer program of this invention, the program calls the component feature recognition algorithm to achieve accurate identification through a triple matching mechanism: First, it matches the model family type, such as distribution box families and busbar families, while excluding structural component families such as beam families and slab families; second, it matches attribute tags, such as electrical-specific tags for residential electrical boxes and emergency lighting boxes; finally, it matches geometric parameters, such as the length, width, and height dimensions of the distribution boxes, to filter out components that meet the electrical equipment specifications; finally, the system marks all electrical components, meeting the requirements for reading relevant model information of the vertical power distribution system in the 3D model.

[0023] Step S2: Automatically extract key data from the identified electrical components, and build a visualized power supply logic network based on the data. This provides logical support for subsequent drawing production and additional reference for design review and construction handover.

[0024] The system automatically extracts the spatial location information of the distribution boxes using algorithms, accurate to the floor level and three-dimensional coordinates; extracts equipment parameters, including rated power and specifications; extracts interconnections, i.e., the circuit associations with other distribution boxes or cables; and extracts hierarchical relationships, clarifying the affiliation between the main distribution cabinet, floor distribution boxes, and terminal distribution boxes. In addition, the system also extracts the installation height of the distribution boxes to verify their spatial compatibility with building components such as beams and slabs, avoiding installation conflicts; and extracts the fire compartment information to verify the compliance of power supply across fire compartments. These two types of additional data are temporarily stored synchronously with the basic data.

[0025] Based on the extracted hierarchical relationship of distribution boxes, power supply range, and circuit connection method, the system constructs a three-level vertical power supply logic network of "main distribution cabinet → layer distribution box → terminal distribution box". This network is visualized in the form of an interface, with each distribution box presented as a node. The node is associated with the power supply range, cable or busbar connection path and specification parameters. At the same time, the installation height and fire compartment information are bound to the corresponding node. When the mouse hovers over a node, the system pops up a window to display complete data, providing a reference for design review and construction handover.

[0026] Step S3: Eliminate invalid data and correct biased data through multi-dimensional verification to ensure that the data meets the output specifications and avoid the error risks of traditional manual data processing.

[0027] The program automatically scans the raw data extracted in step S2, identifies and marks abnormal data points, such as distribution boxes with missing power supply ranges or coordinate information with incorrect formats. The system uses a triple verification mechanism to process the data: data format verification is used to match the field format of the vertical power distribution system diagram output data specifications, including that the equipment power unit is uniformly set to kilowatts, the coordinate format is uniformly set to X / Y / Z decimal meters, and the laying method is uniformly described as laying along the cable tray CT, etc., and invalid data with inconsistent formats is removed; logical relationship verification is used to verify the rationality of the power supply hierarchy, prohibit the reverse logic of terminal distribution boxes supplying power to the main distribution cabinet, and correct incorrect connection relationships; parameter threshold verification is based on building electrical industry standards to screen abnormal data of equipment parameters exceeding the threshold, such as the rated power of civil terminal distribution boxes generally not exceeding 15 kilowatts, and prompts users to correct the data that exceeds the limit.

[0028] Step S4: Based on standardized data, the system calls upon the built-in building electrical industry compliance resources to provide two scenario-based drawing modes: flat and aligned. The entire drawing process can be completed without manual intervention, outputting a vertical power distribution system diagram that meets the construction handover requirements. Combined with the built-in industry standard symbol library and annotation rule library, "one-click drawing" is achieved to meet the drawing needs of different building types.

[0029] The system has a built-in symbol library and annotation rule library that conform to national standards, which can automatically adapt to personalized drawing requirements. The symbol library covers standard legends of core building electrical components such as distribution boxes, cables, cable trays and busbars, and all legends conform to industry drawing specifications. The annotation rule library pre-stores the drawing preferences of different regions and design institutes, covering annotation position, font size and parameter display order, etc., which can be automatically adapted according to user selection or project attributes.

[0030] After selecting the target output mode on the system interface, the user clicks the "Generate Drawing" button, and the program initiates a fully automated process: automatically retrieving core information such as the location, parameters, and connection relationships of distribution boxes from standardized data; completing the arrangement of distribution boxes, drawing power supply paths, and matching industry legends according to the selected mode; intelligently adding key annotations, including distribution box power, cable type and specifications, laying method, and floor number; automatically adjusting the drawing layout to ensure compliance with construction drawing printing specifications; and finally outputting a vertical power distribution system diagram that can be directly used for construction handover, requiring no subsequent manual modification; the specific output modes are as follows: Tiled output mode: This system is suitable for buildings with no more than ten floors, no more than twenty distribution boxes, clearly defined functional zones, and simple power distribution structures. This mode simulates the actual spatial relationship of distribution boxes within the building, arranging them according to the actual floor distribution sequence. It uses the final horizontal value of the upper-level distribution box as the initial horizontal value for the lower-level distribution box, ensuring that the spatial layout on the drawings matches the actual building. The system synchronously recreates the vertical connection paths between the power distribution room and the distribution boxes on each floor, automatically matches the actual cable or busbar laying method, and annotates the corresponding building electrical industry standard symbols.

[0031] Aligned output mode: This system is suitable for buildings with at least ten floors, at least twenty distribution boxes, and complex power distribution systems. The system first categorizes distribution boxes by function, with each column displaying only one type of distribution box. Functional types include residential distribution boxes, commercial distribution boxes, public lighting boxes, emergency lighting boxes, decorative lighting boxes, and standard elevator control boxes. Then, the distribution boxes are arranged sequentially from top to bottom according to building floors, with the function type name labeled at the top of each column and the floor number indicated on the side of the drawing. The system automatically calculates and labels the cable or busbar lengths and specifications between distribution boxes on different floors within the same column, facilitating construction quantity statistics.

[0032] Step S5: Establish real-time data binding between the BIM 3D model and the vertical power distribution system diagram to solve the pain points of "model and drawings not synchronized" and "chaotic version management" in traditional design, and ensure consistent design data throughout the entire process.

[0033] When a user modifies any distribution box parameter in the BIM 3D model, the system automatically identifies the scope of the impact of the parameter change, including the associated cable or busbar specifications, power supply circuits, and distribution box hierarchy, and simultaneously updates the corresponding data and graphical representation in the vertical power distribution system diagram. Conversely, when a user adjusts data or graphics in the vertical power distribution system diagram, the changes are fed back to the BIM 3D model in real time, and the corresponding electrical component parameters in the model are adjusted synchronously, thus ensuring the uniqueness and consistency of the design data throughout the entire process. Specific Implementation Example 1

[0035] This embodiment uses the design of a vertical power distribution system for a 10-story office building as a specific application scenario to fully demonstrate the implementation process of the method of the present invention.

[0036] Step S1: First, import the RevitBIM 3D model of the 10-story office building, which already includes complete electrical engineering modeling. The system then uses its built-in electrical component recognition algorithm, based on a matching mechanism between component family types and attribute tags, to accurately identify electrical components in the model. The identified components mainly include: Distribution boxes: a total of 41 units, including one main distribution cabinet located in the distribution room on the first basement floor, 10 floor distribution boxes (one on each floor), and 30 terminal distribution boxes (three on each floor) corresponding to the office area, corridor lighting, and air conditioning circuits, respectively. Cables and busbars: YJV series cables are used to connect each distribution box. For example, the cable specification from the main distribution cabinet to the first-floor distribution box is YJV-4×150+1×70, and includes the busbar trunking laid vertically in the core tube. Auxiliary components: including cable trays, junction boxes, etc., laid along the ceiling.

[0037] The identification results are displayed in the Revit interface as a list of components combined with 3D positioning markers. Designers can manually confirm or correct the identification results.

[0038] Step S2: The system automatically reads key data of identified electrical components through the parameter extraction module, specifically including: Spatial location information: For example, the spatial coordinates of the main distribution cabinet are (10.5m, 8.2m, -3.5m), and the coordinates of the first-floor distribution box are (12.3m, 9.1m, 3.0m); Equipment parameters: Rated power of the main distribution cabinet is 800kW, rated power of the first-floor terminal distribution box is 50kW, cable type YJV-4×150+1×70; Equipment parameters: Rated power of the main distribution cabinet is 800kW, rated power of the first-floor terminal distribution box is 50kW, electricity... The cable type is YJV-4×150+1×70; the interconnection relationship clearly shows the power supply path from the main distribution cabinet to the first-floor distribution box, and then to the first-floor office area terminal distribution box and the corridor lighting terminal distribution box; the hierarchical relationship clearly defines a three-level structure with the main distribution cabinet as level one, the first-floor distribution boxes as level two, and the terminal distribution boxes as level three; additional information includes the installation height of the terminal distribution boxes (2.5 meters) and their respective fire compartment information, such as the first floor belonging to fire compartment A1; Based on the extracted data, the system constructs an electrical system topology network using graph theory topology algorithms. This network uses nodes of different colors to represent distribution boxes at different levels; for example, red represents the main distribution cabinet, blue represents layer distribution boxes, and green represents terminal distribution boxes. Cables or busbars are represented by attributed connections, labeled with their model and laying method. This topology network supports interactive visualization. When the user hovers the mouse over a layer 1 terminal distribution box node, a window automatically pops up displaying complete data such as its power, installation height, and fire compartment, providing solid logical support for subsequent drawing generation.

[0039] Step S3: A triple verification mechanism is applied to the raw data extracted in step S2: Data format verification: Check the format of key data, such as power unit must be kilowatt and coordinate format must be decimal meter.

[0040] Logical relationship verification: Verifies the rationality of the power supply hierarchy logic, discovers and automatically corrects an incorrect connection relationship, corrects the logical contradiction of the original terminal distribution box directly connecting to the main distribution cabinet, and corrects it to the correct path that conforms to the three-level architecture.

[0041] Parameter threshold verification: According to national standards, screen whether the equipment parameters exceed the conventional thresholds, for example, the rated current of the floor distribution box shall not exceed 630 amps.

[0042] After verification, the system generates a standardized data file in XML format, which contains three main modules: a list of distribution boxes, a list of cables, and a power supply logic table. This file can be directly used in subsequent drawing production.

[0043] Step S4: Given the characteristics of this building, floors 1 to 3 are commercial podiums with varying electrical distribution boxes and a small number of them, so a flat drawing mode is adopted; floors 4 to 10 are standard office floors with similar types of electrical distribution boxes and a large number of them, so an aligned drawing mode is adopted.

[0044] The specific implementation of tiled plotting is as follows: Arrangement logic: The distribution boxes are arranged in the actual order of 3 layers, 2 layers, and 1 layer. The right horizontal coordinate of the upper layer distribution box is used as the starting position for drawing the left side of the lower layer distribution box, so as to accurately reflect the spatial position relationship of the equipment on the drawing.

[0045] Connection path and labeling: Automatically restores the vertical connection path from the underground power distribution room to the power distribution boxes on floors 1-3, labels the cable laying method, and intelligently adds key parameters such as power distribution box power and cable type, and finally generates a flat system diagram that conforms to national drafting standards.

[0046] The specific implementation of aligned plotting is as follows: Column division and arrangement: The terminal distribution boxes are divided into three columns according to the three functions of office area, corridor lighting and air conditioning circuit. Each column only displays boxes of the same type, and they are arranged from top to bottom in the order of 10th floor to 4th floor.

[0047] Labeling and Statistics: The function type name is labeled at the top of each column, and the floor number is labeled on the side of the drawing. The system automatically calculates and labels the differences in cable length and specifications between distribution boxes on different floors in the same column. The generated drawings clearly show the connection and parameter relationships of similar distribution boxes on 7 floors, which facilitates the statistics of construction work.

[0048] The system has a built-in symbol library and annotation rule library that conforms to national drafting standards. After the user selects the drawing mode and clicks the generate button, the system can automatically complete the vertical power distribution system diagram of a 10-story building, which greatly reduces the time required for traditional manual drawing and significantly improves efficiency.

[0049] Step S5: This embodiment further verifies the two-way linkage mechanism between the model and the drawings: Model modification drives drawing updates: When the power of the terminal distribution box in the 5th floor office area is changed from 50 kW to 60 kW in the Revit model, the system automatically identifies the scope of the impact of this change through the data monitoring module, and updates the power label in the system drawing in a short time. At the same time, it prompts that the specifications of the associated cables need to be upgraded accordingly, and automatically completes the label update.

[0050] Drawing modifications drive model updates: When the connection path of the 6th floor corridor lighting terminal distribution box is adjusted from the east side cable tray to the west side cable tray in the system drawing, the change is fed back to the Revit model in real time. The corresponding cable connection points and laying path labels in the topology network in the model are updated synchronously, ensuring complete consistency between the model and the drawing data.

[0051] Example 2:

[0052] This embodiment provides a server for running the method of the present invention, and the specific configuration and operation process are as follows: Hardware configuration: Processor, memory, and interfaces that support high-speed data processing; Software and Programs: The computer programs deployed on it include five core functional modules: model analysis module, data extraction module, topology construction module, drawing control module, and linkage synchronization module. Operation process: After startup, the computer program loads and imports the residential BIM model through the gigabit network port. The program automatically completes model parsing and topology construction. After the designer selects the aligned drawing mode and clicks generate on the terminal, the program calls the built-in symbol library stored in the specified path to generate a system diagram in DWG format. During the data synchronization step, the server listens for change instructions on the model and drawings in real time and automatically stores all change logs in a specific path on the solid-state drive for easy version tracking.

[0053] Example 3:

[0054] This embodiment provides a computer-readable storage medium for storing executable instructions of the method of the present invention, using a portable solid-state drive as a carrier, integrating program files and a standard symbol library, supporting one-click startup and output of multi-format system drawings in different computer environments.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions of the foregoing embodiments, or equivalent substitutions can be made to some technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for automatically generating vertical power distribution system diagrams based on BIM in forward design, characterized in that, Includes the following steps: S1. Intelligent analysis of the building BIM 3D model in the forward design process to accurately identify electrical components in the model; S2. Automatically extract key data of distribution boxes in electrical components using algorithms. Construct a complete electrical system topology network based on the extracted distribution box hierarchy, power supply range and circuit connection method. The key data includes at least the spatial location information of the distribution boxes, equipment parameters, interconnection relationships and hierarchy. S3. Process the raw key data extracted in step S2. First, automatically identify and mark abnormal data points through standardization checks. Then, use a multi-verification mechanism to remove invalid data or correct deviation data to generate standardized data that meets the basic requirements for map output. S4. Based on the standardized data in S3, call the built-in building electrical industry symbol library and annotation rule library to generate a vertical power distribution system diagram through either a tiled or aligned drawing mode: If it is a flat layout: After traversing and reading the building floor information, arrange the distribution boxes in order of floor and use the final value of the upper distribution box as the initial value of the lower layer. Restore the vertical connection path between the distribution room and the distribution box and mark it with industry standard legend. After marking the power of the distribution box and the cable specifications, generate the drawing. If the alignment method is used: After defining the names of the floor main meter box and indoor lighting box, iterate through the floor information and extract various distribution boxes, sort them by distribution box function and the building floors from top to bottom, calculate and mark the differences in cable length and specifications between distribution boxes on different floors in the same column, and generate drawings after marking the distribution box parameters. S5. Bind the vertical power distribution system diagram generated in S2 with the BIM 3D model data to achieve bidirectional data association between the drawings and the 3D model. When the parameters of any distribution box in the BIM model are modified, the corresponding data and graphic representation in the drawings are updated synchronously. When the data or graphics in the drawings are adjusted, the changes are fed back to the BIM model in real time and the corresponding electrical component parameters are corrected to ensure the consistency of the design data.

2. The method for automatically generating vertical power distribution system diagrams based on BIM in forward design as described in claim 1, characterized in that: The "flat drawing mode" in step S4 also includes: this mode is applicable to building types with ≤10 floors, ≤20 distribution boxes, clear functional zoning and simple power distribution structure; when synchronously restoring the vertical connection path between the power distribution room and the distribution boxes on each floor, the system automatically matches the actual laying method of the cable / bus and marks the corresponding building electrical industry standard legend.

3. The method for automatically generating vertical power distribution system diagrams based on BIM in forward design as described in claim 1, characterized in that: The "aligned drawing mode" in step S4 also includes: the distribution box function types specifically cover residential indoor distribution boxes, commercial outlet distribution boxes, public lighting boxes, emergency lighting boxes, decorative lighting boxes, and ordinary elevator control boxes; when sorted by function, each column only displays the same type of distribution box, the function type name is marked at the top of the column, and the floor number is marked on the side when sorting by building floors; the calculated and marked differences in cable length and specifications between distribution boxes on different floors in the same column can be directly used for construction quantity statistics.

4. The method for automatically generating vertical power distribution system diagrams based on BIM in forward design as described in claim 1, characterized in that: The "two-way linkage mechanism" in step S5 is as follows: when the parameters of any distribution box in the BIM 3D model are modified, the system automatically identifies the scope of the impact of the parameter change and synchronously updates the corresponding data and graphic representation in the vertical power distribution system diagram. When data or graphics are adjusted in the vertical power distribution system diagram, the changes are fed back to the BIM 3D model in real time, and the corresponding electrical component parameters in the model are adjusted synchronously to ensure the consistency of the design data.

5. The method for automatically generating vertical power distribution system diagrams based on BIM in forward design as described in claim 1, characterized in that: The "multi-verification mechanism" in step S3 specifically includes data format verification, logical relationship verification, and parameter threshold verification. Among them, data format verification is used to match the field format of the vertical power distribution system diagram output data specification and eliminate invalid data with non-conforming formats; logical relationship verification is used to verify the rationality of the correspondence between the distribution box hierarchy and the power supply range and correct logical errors such as "the terminal distribution box supplies power to the main distribution cabinet"; parameter threshold verification is used to screen abnormal data where equipment parameters exceed the threshold of the building electrical industry standard and prompt the user to correct the deviation data.

6. The method for automatically generating vertical power distribution system diagrams based on BIM in forward design as described in claim 1, characterized in that: The step S2, "constructing a complete electrical system topology network," specifically includes: based on the extracted distribution box hierarchy, power supply range, and circuit connection method, constructing a three-level vertical power supply logic network of "main distribution cabinet → layer distribution box → terminal distribution box." In the topology network, the power supply range, cable / bus connection path, and specification parameters of each level of distribution box are presented in a visual form. The installation height of the distribution box and the fire compartment information are associated with the corresponding distribution box node. When the mouse hovers over the node, the complete data can be displayed, providing additional reference for design review and construction handover.

7. The method for automatically generating vertical power distribution system diagrams based on BIM in forward design as described in claim 1, characterized in that: The "built-in building electrical industry symbol library and annotation rule library" in step S4 can automatically adjust the drawing expression method according to the drawing requirements of different regions and design institutes, and intelligently add necessary annotations and explanations such as power distribution box, cable specifications, and laying method, so as to achieve the automated effect of "one-click trigger to complete the whole process of drawing".

8. The method for automatically generating vertical power distribution system diagrams based on BIM in forward design as described in claim 1, characterized in that: The "key data of the distribution box" extracted in step S2 also includes the installation height of the distribution box and the fire compartment information to which it belongs. When the electrical system topology network is visualized, the installation height and fire compartment information will be associated with the corresponding distribution box node. When the mouse hovers over the node, the complete data can be displayed, providing additional reference for design review and construction handover.

9. A server, comprising: The memory, processor, and computer program stored in the memory and executable on the processor are characterized in that, when the processor executes the computer program, it implements the method for automatically generating vertical power distribution system diagrams based on BIM in forward design as described in any one of claims 1 to 8, and simultaneously completes the visualization rendering of the electrical system topology network when executing step S2, and calls the built-in building electrical industry symbol library and annotation rule library when executing step S4.

10. A computer-readable storage medium storing computer-executable instructions, characterized in that, The computer can execute the method for automatically generating vertical power distribution system diagrams based on BIM in forward design as described in any one of claims 1 to 8, and supports exporting the vertical power distribution system diagrams generated in step S4 in a specified format.

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