Three-dimensional electromechanical model design method based on confined space

Abstract

The invention discloses a three-dimensional electromechanical model design method based on a restricted space, and belongs to the field of electromechanical installation design, and the method comprises the steps: constructing an electromechanical equipment three-dimensional model and an installation space three-dimensional model, and analyzing whether the electromechanical equipment and the installation space form invasion or not based on gridding; obtaining an optimal fusion three-dimensional model based on an invasion and occupation analysis result; planning an avoidance area in which layout of electromechanical equipment pipelines is not allowed and a layout area in which layout of electromechanical equipment pipelines is allowed, and obtaining an occupied grid area; the occupied grid area is optimized, and the installation space of the electromechanical equipment is expanded; and outputting a complete three-dimensional electromechanical model. The scheme is applied to design of the electromechanical three-dimensional model in the limited space, the design product layout problem of the electromechanical model in the complex limited environment is effectively solved, and the design quality and reliability are improved.

Description

Technical Field

[0001] The invention relates to the field of electromechanical installation design, and in particular to a three-dimensional electromechanical model design method based on a confined space. Background Art

[0002] In many engineering application scenarios, such as aerospace equipment, deep-sea exploration equipment, and building operation and maintenance equipment, electromechanical equipment and components often need to be installed in extremely confined spaces. Traditional electromechanical model design methods usually focus on functional realization, but rarely fully consider the many constraints brought by confined spaces, such as irregular spatial geometry, heat dissipation difficulties, narrow maintenance channels, and insufficient space for pipeline wiring. This can easily lead to interference, unstable performance, or even malfunction of the designed electromechanical model during actual assembly and operation, as well as mismatching of electromechanical equipment during on-site installation. It is urgent to propose a three-dimensional electromechanical model design method that takes into account confined spaces. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a three-dimensional electromechanical model design method based on confined space, which rationally plans the installation position and installation space of electromechanical equipment and can output a three-dimensional model integrating the electromechanical equipment and the installation space.

[0004] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is: A three-dimensional electromechanical model design method based on confined space is provided, which includes: Step S1: construct a three-dimensional model of electromechanical equipment and a three-dimensional model of the installation space to form a fused three-dimensional model, and analyze whether there is an encroachment between the electromechanical equipment and the installation space based on gridding; Step S2: according to the encroachment analysis result, the three-dimensional model of the electromechanical equipment is moved in the three-dimensional model of the installation space to obtain an optimal fused three-dimensional model, and the optimal fused three-dimensional model determines the optimal installation position of the electromechanical equipment in the installation space; Step S3: Based on the shortest distance between each grid position on the three-dimensional model of the electromechanical equipment and each grid position on the three-dimensional model of the installation space in the optimal fusion three-dimensional model, the avoidance area where the electromechanical equipment pipelines are not allowed to be laid out and the layout area where the electromechanical equipment pipelines are allowed to be laid out are planned, and the grid area where the electromechanical equipment and the installation space are encroached in the optimal fusion three-dimensional model is obtained; Step S4: Optimize the occupied grid area to expand the installation space of electromechanical equipment; Step S5: After the installation space of the electromechanical equipment is expanded, the electromechanical equipment pipelines are designed and laid out in the optimal fusion three-dimensional model according to the determined installation position of the electromechanical equipment in the installation space and the layout area of ​​the electromechanical equipment pipelines, and a complete three-dimensional electromechanical model is output.

[0005] Further, step S1 includes: Step S11: constructing a three-dimensional model of the electromechanical equipment according to the design size of the electromechanical equipment, constructing a three-dimensional model of the installation space according to the preset installation space size of the electromechanical equipment, importing the three-dimensional model of the electromechanical equipment into the three-dimensional model of the installation space to form a fused three-dimensional model, and meshing the surfaces of the three-dimensional model of the electromechanical equipment and the three-dimensional model of the installation space; Step S12: construct a three-dimensional coordinate system on the fused three-dimensional model, and obtain the coordinates of each grid center on the three-dimensional model of the electromechanical equipment in the three-dimensional coordinate system , n The number of the grid on the three-dimensional model of the electromechanical equipment, and the coordinates of each grid center on the three-dimensional model of the installation space in the three-dimensional coordinate system , m It is the number of the grid on the three-dimensional model of the installation space; Step S13: Using the distance between the center of the grid on the three-dimensional model of the installation space and the center of the grid on the three-dimensional model of the electromechanical equipment, select the grid closest to the three-dimensional model of the installation space and the three-dimensional model of the electromechanical equipment to obtain the grid combination with the closest distance. ; The closest grid combination The screening function model is: ; in, is the coordinate set of the grid center on the three-dimensional model of the installation space, is the coordinate set of the grid center on the three-dimensional model of the electromechanical equipment, and the closest grid combination Representation Grid m With Grid n The closest distance, To install a collection of meshes on a 3D model of the space, It is a collection of meshes on the three-dimensional model of electromechanical equipment; Step S14: Combine the grids according to the closest distance Calculate the distance between two grids in each grid combination that is closest to each other. , The surface of the 3D model of the installation space and the 3D model of the electromechanical equipment n The closest distance of the grid; Step S15: Constructing a dataset of the closest distance between each grid on the three-dimensional model of the electromechanical equipment and the surface of the three-dimensional model of the installation space ; ; in, N is the number of grids on the three-dimensional model of electromechanical equipment, For the first time on the three-dimensional model of electromechanical equipment N The shortest distance between a grid and the surface of the three-dimensional model of the installation space; Step S16: The closest grid combination obtained in step S13 , with a grid m As the starting point, several rays are emitted to the 3D model of the electromechanical equipment, and the number of intersections between the rays and the surface of the 3D model of the electromechanical equipment is counted. u , according to the number of intersections u Evaluation Grid m Whether the side wall area of ​​the installation space encroaches on the area where the three-dimensional model of the electromechanical equipment is located; like and , is a positive integer, then it is determined to constitute an occupation; if and , If it is a positive integer, it is determined that no encroachment has occurred.

[0006] Further, step S2 includes: Step S21: Extract all grid combinations that form encroachment and are closest to each other ; ; in, w Combine collections for a grid The number of grid combinations with the closest distance, Combine collections for a grid Middle w The closest grid combination; Step S22: Calculate the grid combination set The sum of the grid distance values ​​between the closest grid combinations ; ; in, w 0 is the grid combination set The number of the grid combination with the closest distance. For Grid The center coordinates of For Grid The center coordinates of Combine collections for a grid Middle w 0 The closest grid combination; Step S23: Move the electromechanical equipment 3D model within the installation space 3D model, each moving distance is one grid, and repeat steps S13 to S22 until the fused 3D model after the move satisfies the constraint conditions. R, and obtain the optimal fused 3D model, which determines the optimal installation position of the electromechanical equipment in the installation space: Constraints R : ; in, It is a collection of meshes that can be moved within the space of the three-dimensional model of the installation space of the electromechanical equipment three-dimensional model. It is the moving coordinates of the three-dimensional model of the electromechanical equipment relative to the initial position during the movement process.

[0007] Further, step S3 includes: Step S31: Output all grid combinations that form encroachment and are closest to each other after obtaining the optimal fused 3D model , and the grid closest distance dataset corresponding to the grid combination that has not formed an encroachment and is closest ; , ; in, v Combine collections for a grid The number of grid combinations with the closest distance, Combine collections for a grid Middle v The closest grid combination; The closest distance dataset Neidi p The closest distance data, p The closest distance dataset The number of closest distance data within , and ; Step S32: Setting the distance threshold between the electromechanical equipment and the side wall of the installation space , traverse the nearest distance dataset The closest distance data within, compare the closest distance Distance threshold The size between; like , then determine the closest distance data on the three-dimensional model of the electromechanical equipment The corresponding grid The distance between the location and the side wall of the 3D model of the installation space is small, and the grid The gap between the location and the side wall of the 3D model of the installation space creates an avoidance area B p , avoidance area B p It is not allowed to lay out pipelines for electromechanical equipment; like , then determine the grid on the three-dimensional model of the electromechanical equipment The distance between the location and the side wall of the installation space is large, and the grid The gap between the side walls of the 3D model of the installation space creates the layout area S p , layout area S p It is allowed to lay out pipelines for electromechanical equipment.

[0008] Further, step S4 includes: Step S41: Extract the closest grid combination The corresponding closest distance , traverse the nearest distance dataset The closest distance data within, from the closest distance data set Medium screening and closest distance The closest distance , the screening process satisfies the constraints U : ; Step S42: Based on the shortest distance The avoidance area constructed between the corresponding closest distance grid combinations B q or layout area S q , expand the grid The installation space around the side wall of the three-dimensional model of the installation space is so that the grid With Grid The installation space between the two reaches the avoidance area B q or layout area S q The size of the room is increased to complete the expansion of the installation space for electromechanical equipment.

[0009] The beneficial effects of the present invention are as follows: the present solution is applied to the design of electromechanical three-dimensional models in confined spaces, ensuring that the electromechanical three-dimensional models carry out reasonable equipment layout and pipeline layout in the confined three-dimensional space, and minimizing the expansion construction of the building space during the installation of electromechanical equipment, increasing the efficiency of installation construction, and reducing the damage to the building space structure. The installation of electromechanical equipment is adapted to the confined space, and the rationality of the layout of the electromechanical equipment pipelines is ensured, and a three-dimensional model integrating the electromechanical equipment, pipelines, and installation space is output, which effectively solves the design and layout problems of the electromechanical model in a complex and confined environment, and improves the design quality and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 Flowchart of the design method for a 3D electromechanical model based on a confined space. DETAILED DESCRIPTION

[0011] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0012] like Figure 1 As shown, a three-dimensional electromechanical model design method based on confined space includes: Step S1: construct a three-dimensional model of electromechanical equipment and a three-dimensional model of the installation space to form a fused three-dimensional model, and analyze whether there is any encroachment between the electromechanical equipment and the installation space based on gridding. Step S1 specifically includes: Step S11: constructing a three-dimensional model of the electromechanical equipment according to the design size of the electromechanical equipment, constructing a three-dimensional model of the installation space according to the preset installation space size of the electromechanical equipment, importing the three-dimensional model of the electromechanical equipment into the three-dimensional model of the installation space to form a fused three-dimensional model, and meshing the surfaces of the three-dimensional model of the electromechanical equipment and the three-dimensional model of the installation space; Step S12: construct a three-dimensional coordinate system on the fused three-dimensional model, and obtain the coordinates of each grid center on the three-dimensional model of the electromechanical equipment in the three-dimensional coordinate system , n The number of the grid on the three-dimensional model of the electromechanical equipment, and the coordinates of each grid center on the three-dimensional model of the installation space in the three-dimensional coordinate system , m It is the number of the grid on the three-dimensional model of the installation space; Step S13: Using the distance between the center of the grid on the three-dimensional model of the installation space and the center of the grid on the three-dimensional model of the electromechanical equipment, select the grid closest to the three-dimensional model of the installation space and the three-dimensional model of the electromechanical equipment to obtain the grid combination with the closest distance. ; The closest grid combination The screening function model is: ; in, is the coordinate set of the grid center on the three-dimensional model of the installation space, is the coordinate set of the grid center on the three-dimensional model of the electromechanical equipment, and the closest grid combination Representation Grid m With Grid n The closest distance, To install a collection of meshes on a 3D model of the space, It is a collection of meshes on the three-dimensional model of electromechanical equipment; The closest grid combination Representation Grid n Location distance grid on electromechanical equipment m The position on the side wall of the installation space is the shortest, and the distance between the two grids can be used to determine whether the corresponding position on the electromechanical equipment is too close to the side wall of the installation space, thereby determining whether there is enough installation space.

[0013] Step S14: Combine the grids according to the closest distance Calculate the distance between two grids in each grid combination that is closest to each other. , The surface of the 3D model of the installation space and the 3D model of the electromechanical equipment n The closest distance of the grid; Step S15: Constructing a dataset of the closest distance between each grid on the three-dimensional model of the electromechanical equipment and the surface of the three-dimensional model of the installation space ; ; in, N is the number of grids on the three-dimensional model of electromechanical equipment, For the first time on the three-dimensional model of electromechanical equipment N The shortest distance between a grid and the surface of the three-dimensional model of the installation space; Step S16: The closest grid combination obtained in step S13 , with a grid m As the starting point, several rays are emitted to the 3D model of the electromechanical equipment, and the number of intersections between the rays and the surface of the 3D model of the electromechanical equipment is counted. u , according to the number of intersections u Evaluation Grid m Whether the side wall area of ​​the installation space encroaches on the area where the three-dimensional model of the electromechanical equipment is located; like and , If is a positive integer, it is determined to be an encroachment. From the two three-dimensional models, it means that the side wall of the installation space has invaded the electromechanical equipment. In the actual construction process, the electromechanical equipment cannot be installed and the space needs to be expanded. and , If it is a positive integer, it is determined that no encroachment has occurred.

[0014] Step S2: According to the encroachment analysis result, the three-dimensional model of the electromechanical equipment is moved within the three-dimensional model of the installation space to obtain an optimal fused three-dimensional model, and the optimal fused three-dimensional model determines the optimal installation position of the electromechanical equipment in the installation space. Step S2 specifically includes: Step S21: Extract all grid combinations that form encroachment and are closest to each other ; ; in, w Combine collections for a grid The number of grid combinations with the closest distance, Combine collections for a grid Middle w The closest grid combination; Step S22: Calculate the grid combination set The sum of the grid distance values ​​between the closest grid combinations ; ; in, w 0 is the grid combination set The number of the grid combination with the closest distance. For Grid The center coordinates of For Grid The center coordinates of Combine collections for a grid Middle w 0 The closest grid combination; Step S23: Move the electromechanical equipment 3D model within the installation space 3D model, each moving distance is one grid, and repeat steps S13 to S22 until the fused 3D model after the move satisfies the constraint conditions. R , and obtain the optimal fused 3D model, which determines the optimal installation position of the electromechanical equipment in the installation space: Constraints R : ; in, It is a collection of meshes that can be moved within the space of the three-dimensional model of the installation space of the electromechanical equipment three-dimensional model. It is the moving coordinates of the three-dimensional model of the electromechanical equipment relative to the initial position during the movement process.

[0015] By moving the three-dimensional model of the electromechanical equipment a limited number of times within the three-dimensional model of the installation space, the best installation position of the electromechanical equipment is found, so that the area occupied by the side walls of the three-dimensional model of the installation space is minimized, thus making the expansion area of ​​the installation space smaller.

[0016] Step S3: Based on the shortest distance between each grid position on the electromechanical equipment three-dimensional model and each grid position on the installation space three-dimensional model in the optimal fusion three-dimensional model, plan the avoidance area where the electromechanical equipment pipelines are not allowed to be laid out, and the layout area where the electromechanical equipment pipelines are allowed to be laid out, and obtain the grid area where the electromechanical equipment and the installation space are encroached in the optimal fusion three-dimensional model. Step S3 specifically includes: Step S31: Output all grid combinations that form encroachment and are closest to each other after obtaining the optimal fused 3D model , and the grid closest distance dataset corresponding to the grid combination that has not formed an encroachment and is closest ; , ; in, v Combine collections for a grid The number of grid combinations with the closest distance, Combine collections for a grid Middle v The closest grid combination; The closest distance dataset Neidi p The closest distance data, p The closest distance dataset The number of closest distance data within , and ; Step S32: Setting the distance threshold between the electromechanical equipment and the side wall of the installation space , traverse the nearest distance dataset The closest distance data within, compare the closest distance Distance threshold The size between; like , then determine the closest distance data on the three-dimensional model of the electromechanical equipment The corresponding grid The distance between the location and the side wall of the 3D model of the installation space is small, and the grid The gap between the location and the side wall of the 3D model of the installation space creates an avoidance area B p , avoidance area B p It is not allowed to lay out pipelines for electromechanical equipment; like , then determine the grid on the three-dimensional model of the electromechanical equipment The distance between the location and the side wall of the installation space is large, and the grid The gap between the side walls of the 3D model of the installation space creates the layout area S p, layout area S p It is allowed to lay out pipelines for electromechanical equipment.

[0017] Step S4: Optimize the occupied grid area to expand the installation space of the electromechanical equipment. Step S4 specifically includes: Step S41: Extract the closest grid combination The corresponding closest distance , traverse the nearest distance dataset The closest distance data within, from the closest distance data set Medium screening and closest distance The closest distance , the screening process satisfies the constraints U : ; Step S42: Based on the shortest distance The avoidance area constructed between the corresponding closest distance grid combinations B q or layout area S q , expand the grid The installation space around the side wall of the three-dimensional model of the installation space is so that the grid With Grid The installation space between the two reaches the avoidance area B q or layout area S q The size of the room is increased to complete the expansion of the installation space for electromechanical equipment.

[0018] Step S5: After the installation space of the electromechanical equipment is expanded, the electromechanical equipment pipelines are designed and laid out in the optimal fusion three-dimensional model according to the determined installation position of the electromechanical equipment in the installation space and the layout area of ​​the electromechanical equipment pipelines, and a complete three-dimensional electromechanical model is output.

[0019] The present invention is applied to the design of electromechanical three-dimensional models in confined spaces, ensuring that the electromechanical three-dimensional model performs reasonable equipment layout and pipeline layout in the confined three-dimensional space, and minimizes the expansion construction of the building space during the installation of electromechanical equipment, increases the efficiency of installation construction, and reduces the damage to the building space structure. The installation of electromechanical equipment is adapted to the confined space, and the rationality of the layout of the electromechanical equipment pipelines is ensured, and a three-dimensional model integrating the electromechanical equipment, pipelines, and installation space is output, which effectively solves the design and layout problems of the electromechanical model in a complex and confined environment, and improves the design quality and reliability.

Claims

1. A three-dimensional electromechanical model design method based on confined space, characterized in that: include: Step S1: construct a three-dimensional model of electromechanical equipment and a three-dimensional model of the installation space to form a fused three-dimensional model, and analyze whether there is an encroachment between the electromechanical equipment and the installation space based on gridding; Step S2: according to the encroachment analysis result, the three-dimensional model of the electromechanical equipment is moved in the three-dimensional model of the installation space to obtain an optimal fused three-dimensional model, and the optimal fused three-dimensional model determines the optimal installation position of the electromechanical equipment in the installation space; Step S3: Based on the shortest distance between each grid position on the three-dimensional model of the electromechanical equipment and each grid position on the three-dimensional model of the installation space in the optimal fusion three-dimensional model, the avoidance area where the electromechanical equipment pipelines are not allowed to be laid out and the layout area where the electromechanical equipment pipelines are allowed to be laid out are planned, and the grid area where the electromechanical equipment and the installation space are encroached in the optimal fusion three-dimensional model is obtained; Step S4: Optimize the occupied grid area to expand the installation space of electromechanical equipment; Step S5: After the installation space of the electromechanical equipment is expanded, the electromechanical equipment pipelines are designed and laid out in the optimal fusion three-dimensional model according to the determined installation position of the electromechanical equipment in the installation space and the layout area of ​​the electromechanical equipment pipelines, and a complete three-dimensional electromechanical model is output.

2. The method for designing a three-dimensional electromechanical model based on a confined space according to claim 1, characterized in that: The step S1 comprises: Step S11: constructing a three-dimensional model of the electromechanical equipment according to the design size of the electromechanical equipment, constructing a three-dimensional model of the installation space according to the preset installation space size of the electromechanical equipment, importing the three-dimensional model of the electromechanical equipment into the three-dimensional model of the installation space to form a fused three-dimensional model, and meshing the surfaces of the three-dimensional model of the electromechanical equipment and the three-dimensional model of the installation space; Step S12: construct a three-dimensional coordinate system on the fused three-dimensional model, and obtain the coordinates of each grid center on the three-dimensional model of the electromechanical equipment in the three-dimensional coordinate system , n The number of the grid on the three-dimensional model of the electromechanical equipment, and the coordinates of each grid center on the three-dimensional model of the installation space in the three-dimensional coordinate system , m It is the number of the grid on the three-dimensional model of the installation space; Step S13: Using the distance between the center of the grid on the three-dimensional model of the installation space and the center of the grid on the three-dimensional model of the electromechanical equipment, select the grids on the three-dimensional model of the installation space that are closest to the three-dimensional model of the electromechanical equipment, and obtain the grid combination with the closest distance. ; The closest grid combination The screening function model is: ； in, is the coordinate set of the grid center on the three-dimensional model of the installation space, is the coordinate set of the grid center on the three-dimensional model of the electromechanical equipment, and the closest grid combination Representation Grid m With Grid n The closest distance, To install a collection of meshes on a 3D model of the space, It is a collection of meshes on the three-dimensional model of electromechanical equipment; Step S14: Combine the grids according to the closest distance Calculate the distance between two grids in each grid combination that is closest to each other. , The surface of the 3D model of the installation space and the 3D model of the electromechanical equipment n The closest distance of the grid; Step S15: Constructing a dataset of the closest distance between each grid on the three-dimensional model of the electromechanical equipment and the surface of the three-dimensional model of the installation space ; ； in, N is the number of grids on the three-dimensional model of electromechanical equipment, For the first time on the three-dimensional model of electromechanical equipment N The shortest distance between a grid and the surface of the three-dimensional model of the installation space; Step S16: The closest grid combination obtained in step S13 , with a grid m As the starting point, several rays are emitted to the 3D model of the electromechanical equipment, and the number of intersections between the rays and the surface of the 3D model of the electromechanical equipment is counted. u , according to the number of intersections u Evaluation Grid m Whether the side wall area of ​​the installation space encroaches on the area where the three-dimensional model of the electromechanical equipment is located; like and , is a positive integer, then it is determined to constitute an occupation; if and , If it is a positive integer, it is determined that no encroachment has occurred.

3. The method for designing a three-dimensional electromechanical model based on a confined space according to claim 2, characterized in that: The step S2 comprises: Step S21: Extract all grid combinations that form encroachment and are closest to each other ; ； in, w Combine collections for a grid The number of grid combinations with the closest distance, Combine collections for a grid Middle w The closest grid combination; Step S22: Calculate the grid combination set The sum of the grid distance values ​​between the closest grid combinations ; ； in, w 0 is the grid combination set The number of the grid combination with the closest distance. For Grid The center coordinates of For Grid The center coordinates of Combine collections for a grid Middle w 0 The closest grid combination; Step S23: Move the electromechanical equipment 3D model within the installation space 3D model, each moving distance is one grid, and repeat steps S13 to S22 until the fused 3D model after the move satisfies the constraint conditions. R , and obtain the optimal fused 3D model, which determines the optimal installation position of the electromechanical equipment in the installation space: Constraints R : ; in, It is a collection of meshes that can be moved within the space of the three-dimensional model of the installation space of the electromechanical equipment three-dimensional model. It is the moving coordinates of the three-dimensional model of the electromechanical equipment relative to the initial position during the movement process.

4. The method for designing a three-dimensional electromechanical model based on a confined space according to claim 3, characterized in that: The step S3 comprises: Step S31: Output all grid combinations that form encroachment and are closest to each other after obtaining the optimal fused 3D model , and the grid closest distance dataset corresponding to the grid combination that has not formed an encroachment and is closest ; ， ； in, v Combine collections for a grid The number of grid combinations with the closest distance, Combine collections for a grid Middle v The closest grid combination; The closest distance dataset Neidi p The closest distance data, p The closest distance dataset The number of closest distance data within , and ; Step S32: Setting the distance threshold between the electromechanical equipment and the side wall of the installation space , traverse the nearest distance dataset The closest distance data within, compare the closest distance Distance threshold The size between; like , then determine the closest distance data on the three-dimensional model of the electromechanical equipment The corresponding grid The distance between the location and the side wall of the 3D model of the installation space is small, and the grid The gap between the location and the side wall of the 3D model of the installation space creates an avoidance area B p , avoidance area B p It is not allowed to lay out pipelines for electromechanical equipment; like , then determine the grid on the three-dimensional model of the electromechanical equipment The distance between the location and the side wall of the installation space is large, and the grid The gap between the side walls of the 3D model of the installation space creates the layout area S p , layout area S p It is allowed to lay out pipelines for electromechanical equipment.

5. The method for designing a three-dimensional electromechanical model based on a confined space according to claim 4, characterized in that: The step S4 comprises: Step S41: Extract the closest grid combination The corresponding closest distance , traverse the nearest distance dataset The closest distance data within, from the closest distance data set Medium screening and closest distance The closest distance , the screening process satisfies the constraints U : ； Step S42: Based on the shortest distance The avoidance area constructed between the corresponding closest distance grid combinations B q or layout area S q , expand the grid The installation space around the side wall of the three-dimensional model of the installation space is so that the grid With Grid The installation space between the two reaches the avoidance area B q or layout area S q The size of the machine is increased to complete the expansion of the installation space for electromechanical equipment.

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