CN117494245B

CN117494245B - Wearing protective clothing modeling method, system, electronic equipment and readable storage medium

Info

Publication number: CN117494245B
Application number: CN202311506574.1A
Authority: CN
Inventors: 宋旭; 丁俊豪; 莫浩明; 杨怿健
Original assignee: Hong Kong Research Institute of Textiles and Apparel Ltd
Current assignee: Hong Kong Research Institute of Textiles and Apparel Ltd
Priority date: 2023-11-13
Filing date: 2023-11-13
Publication date: 2024-09-10
Anticipated expiration: 2043-11-13
Also published as: CN117494245A

Abstract

The application discloses a wearing protector modeling method, a system, electronic equipment and a readable storage medium, wherein the wearing protector modeling method generates a lattice protector model through three-dimensional scanning and modeling of a using part of a wearer, the lattice protector model is made porous, the lattice protector model is divided into a surface lattice, an edge lattice and an internal lattice according to the position of the lattice in a modeling space, a first porous structure, a second porous structure and a third porous structure are respectively filled, and the porous protector model with a smooth curved surface is obtained and can be directly used for manufacturing of protectors. The porous protective clothing model generated by the modeling method provided by the application has the advantages of high porosity and high specific strength, has mechanical property and air permeability, and forms a smooth curved surface, so that the wearing protective clothing manufactured according to the method has the same smooth curved surface, the wearing comfort level and the fitting degree are improved, and in addition, the lightweight design can be realized.

Description

Wearing protective clothing modeling method, system, electronic equipment and readable storage medium

Technical Field

The invention belongs to the field of wearing article design modeling, and particularly relates to a wearing article modeling method, a wearing article modeling system, electronic equipment and a readable storage medium.

Background

Wearing the protective clothing is used for relieving the body injury caused by accidents during the operation, activity or exercise of a user, and comprises products such as knee pads, elbow pads, hip pads, helmets and the like, and the products often absorb impact energy of the external environment on the body part through soft cushions or hard pads so as to achieve the purpose of shock absorption. Traditional protective gear designs are bulky to reach good energy absorption performance, often use injection molding technology during the manufacturing, and this often makes the protective gear very heavy, moreover not breathable enough, and the wearing experience is poor. In addition, most of the protective clothing products on the market are of fixed sizes, the differences of the shapes, the ages and the like of the users are not considered, the wearing parts of the users cannot be well attached, and the protective performance of the protective clothing is further reduced, so that personalized customization is a choice with market potential, and manual customization design consumes more manpower and time.

Disclosure of Invention

Based on the above, the present invention aims to provide a method, a system, an electronic device and a readable storage medium for modeling a wearable protector, wherein the wearable protector manufactured by the wearable protector model obtained by the method has good shock absorption performance and air permeability, so as to overcome the defects of the prior art.

In a first aspect, the present invention provides a method of modeling a wearable brace, comprising:

three-dimensional scanning is carried out on the wearing part of the user to obtain scanning data;

constructing a lattice protective clothing model composed of lattices according to the scanning data;

Obtaining a plane array of lattices in the patterned protective tool model, and determining a surface lattice, an edge lattice and an internal lattice according to the plane array of the lattices, wherein the plane array represents the relative position relation of planes forming the lattices, the surface lattice forms a non-edge area of the surface of the patterned protective tool model, the edge lattice forms an edge area of the surface of the patterned protective tool model, and the internal lattice forms an internal structure of the patterned protective tool model;

and filling the surface lattice, the edge lattice and the internal lattice with the first porous structure, the second porous structure and the third porous structure respectively to obtain the porous protective tool model with a smooth curved surface.

Further, constructing the patterned brace model from the scan data includes:

Constructing a protective clothing entity model and a protective clothing three-dimensional lattice structure according to the scanning data;

mapping the three-dimensional lattice structure of the protective clothing to the protective clothing entity model to obtain a lattice protective clothing model.

Further, constructing the three-dimensional lattice structure of the brace from the scan data includes:

Constructing a two-dimensional lattice domain of the protective clothing according to the scanning data;

Extruding the two-dimensional lattice domain of the protective clothing to obtain the three-dimensional lattice structure of the protective clothing.

Further, constructing the brace two-dimensional lattice domain from the scan data includes:

Constructing a two-dimensional protective clothing outline according to the scanning data;

Generating a two-dimensional triangular lattice domain filled with the first triangular lattice by using the triangulation algorithm and taking the two-dimensional protective clothing contour as a boundary;

reconstructing the connection of the first triangular lattice in the two-dimensional triangular lattice domain to generate a mixed lattice domain filled with the second triangular lattice and the first quadrangle;

Splitting the second triangular lattice and the first quadrilateral lattice to generate a quadrilateral lattice domain filled with the second quadrilateral lattice;

mapping the quadrilateral lattice domain into the outline of the two-dimensional protective clothing, and outputting the two-dimensional lattice domain of the protective clothing.

Further, the first porous structure is an implicit curved surface having a surface plane that imparts a smooth curved surface to the porosification brace model.

Further, the first porous structure is a triple period minimum curved surface having a surface plane.

Further, the generating process of the first porous structure includes:

generating a first porous structure body by using an implicit surface modeling method, determining the plane of a first hole, wherein the first hole is a hole facing the surface of the latticed protective clothing model in the first porous structure body;

Constructing a first quadrilateral plane on the plane of the first hole, generating a first trimming domain by utilizing implicit function expression of a first porous structure body, removing the first trimming domain in the first quadrilateral plane to form a first contour, seamlessly matching the first contour with the contour of the first hole, cutting four corners of the first quadrilateral plane by utilizing a sphere, outputting the first surface plane and carrying out lattice formation on the first surface plane;

Connecting the formatted first surface plane and the first porous structure body generates a first porous structure such that the first surface plane forms a non-edge portion of the porous brace model surface.

Further, generating the first pruned field using the implicit functional expression of the first porous structure body includes:

calculating an equivalent contour line of the implicit function expression of the first porous structure body in the z plane;

a first clipping domain is generated in a first quadrilateral plane using the contour.

Further, the generating process of the first porous structure includes:

The control equation for establishing the first porous structure is expressed as An implicit functional expression representing a first porous structure body, N representing a positive number, k representing a positive number less than 1;

the first porous structure is generated using the control equation described above.

Further, the second porous structure is generated by the following steps:

Performing geometric shape mixing by utilizing a volume distance function of the cylinder and the sphere to generate a second porous structure body;

determining the plane of a second hole, wherein the second hole is a hole facing the surface of the latticed protective clothing model in the second porous structure body;

Constructing a second quadrilateral plane on the plane of the second hole, generating a second trimming domain by using a control equation of the second hole, removing the second trimming domain in the second quadrilateral plane to form a second contour, seamlessly matching the second contour with the contour of the second hole, cutting four corners of the second quadrilateral plane by using a sphere, outputting and lattice the second surface plane, and connecting the lattice second surface plane and the second porous structure body, so that the second surface plane forms an edge part of the surface of the porous protector model;

And generating a joint domain by using a control equation of a porous structure adjacent to the second porous structure body, wherein the joint domain is used for connecting the second porous structure with the adjacent porous structure, and connecting the joint domain with the second porous structure body to generate a second porous structure, and the second porous structure comprises the second porous structure body, a second surface plane and the joint domain.

Further, the third porous structure is generated using an implicit surface modeling method.

Further, the third porous structure is a triple period minimum curved surface.

Further, the method further comprises the steps of:

Acquiring a vertex array of a crystal lattice, wherein the vertex array represents position information of vertexes forming the crystal lattice;

A planar array of the lattice is generated from the array of vertices.

Further, generating a planar array of the lattice from the array of vertices includes:

determining plane components forming the lattice according to the vertex array of the lattice;

And determining joint surfaces and non-joint surfaces of the lattices according to plane components, wherein the joint surfaces are planes shared by adjacent lattices, the non-joint surfaces are planes except for the joint surfaces, which form the lattices, the joint surfaces and the non-joint surfaces of the lattices are represented by binarization, and a plane array of the lattices is generated according to the result of binarization representation.

In a second aspect, the present invention provides a wearable brace modeling system comprising:

The three-dimensional scanning module is configured to perform three-dimensional scanning on the wearing part of the user to obtain scanning data;

A model lattice module configured to construct a lattice brace model composed of lattices from the scan data;

The lattice positioning module is configured to acquire a plane array of a lattice in the lattice protector model, and determine a surface lattice, an edge lattice and an internal lattice according to the plane array of the lattice, wherein the plane array represents the relative position relation of planes constituting the lattice, the surface lattice constitutes a non-edge area of the surface of the lattice protector model, the edge lattice constitutes an edge area of the surface of the lattice protector model, and the internal lattice constitutes the internal structure of the lattice protector model;

And the lattice filling module is configured to fill the first porous structure, the second porous structure and the third porous structure on the surface lattice, the edge lattice and the internal lattice respectively to obtain a porous protective tool model with a smooth curved surface.

Further, the model meshing module is further configured to:

Further, the modeling system described above further includes a porous structure generation module configured to generate a first porous structure, a second porous structure, and a third porous structure for filling the lattice.

Further, when the porous structure generation module is configured to generate the first porous structure, the porous structure generation module is specifically configured to:

Further, the porous structure generation module is further configured to:

Calculating an equivalent contour line of an implicit function of the first porous structure body in a z-plane;

Further, when the porous structure generation module is configured to generate the second porous structure, the porous structure generation module is specifically configured to:

constructing a second quadrilateral plane on the plane of the second hole, generating a second trimming domain by using a control equation of the second hole, removing the second trimming domain in the second quadrilateral plane to form a second contour, seamlessly matching the second contour with the contour of the second hole, cutting four corners of the second quadrilateral plane by using a sphere, outputting a second surface plane, and connecting the crystallized second surface plane and a second porous structure body, so that the second surface plane forms an edge part of the surface of the porous protector model;

Further, when the porous structure generation module is configured to generate the third porous structure, the porous structure generation module is specifically configured to:

and generating a third porous structure by using an implicit surface modeling method.

Further, the modeling system further includes a plane array generation module configured to:

A planar array of the lattice is generated from the array of vertices.

Further, the planar array generation module is further configured to:

In a third aspect, the present invention provides an electronic device comprising a memory storing computer executable instructions and a processor, which when executed by the processor causes the device to perform the method of modeling a wearable brace provided in the first aspect.

In a fourth aspect, the present invention provides a readable storage medium storing a computer executable program which when executed implements the method for modeling a wearable brace provided in the first aspect.

In a fifth aspect, the present invention also provides a wearable brace made using the additive manufacturing technique, the additive manufacturing process using the porous brace model generated by the method of the first aspect as a digital model.

From the above technical scheme, the invention has the following beneficial effects:

The invention provides a wearing protective clothing modeling method, a system, electronic equipment and a readable storage medium, wherein the modeling method obtains a lattice protective clothing model by three-dimensionally scanning a using part of a wearer and modeling according to scanned scanning data, and converts the lattice protective clothing model into a porous protective clothing model according to different porous structures filled in positions of lattices in the model, and the porous protective clothing model can be directly used for producing and manufacturing protective clothing; the invention fully utilizes the advantages of high porosity and high specific strength of the porous structure, so that the wearing protective clothing has excellent energy absorption capacity and can well absorb shock and protect impact when being acted by external force; the high porosity of the porous structure reduces the overall density of the protective clothing, so that the protective clothing is more breathable, and the wearing experience is greatly improved; the porous protective clothing model reduces the materials of non-critical areas so as to reduce the use of manufacturing materials, the weight of wearing the protective clothing is reduced, the lightweight design of the product is realized, and meanwhile, the cost of raw materials is reduced; unlike traditional mode, the modeling method provided by the invention can quickly build individualized and producible protective clothing model according to the body type data of the user, so that the protective clothing is more fit to the wearing position of the user and the wearing feeling is more comfortable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 illustrates the type of porous structure found in nature in the prior art;

FIG. 2 illustrates an exemplary execution flow of a method for modeling a wearable brace provided by an embodiment of the present application;

Fig. 3 illustrates an example of determining a lattice type according to a planar array of lattices provided by an embodiment of the application, in which fig. 3 (a) illustrates a modeling space composed of 27 hexahedral lattices, fig. 3 (b) illustrates a spatial geometry of one hexahedral lattice, and fig. 3 (c) to 3 (f) illustrate positions of corner lattices, edge lattices, surface lattices, and internal lattices, respectively, in the modeling space illustrated in fig. 3 (a);

Fig. 4 illustrates a process schematic for generating a first table plane based on a TPMS unit provided by an embodiment of the present application, in which fig. 4 (a) illustrates that a hexahedral plane at z=zi is trimmed by a domain defined by an implicit function expression of the TPMS, fig. 4 (b) and (c) illustrate that corners of the hexahedral plane of fig. 4 (a) are cut by spheres, and fig. 4 (d) illustrates the first table plane based on the TPMS unit;

fig. 5 shows a generation process of generating a first porous structure based on a TPMS unit according to an embodiment of the present application;

FIG. 6 illustrates three first porous structures directly generated by modifying the control equation of the porous structure provided by an embodiment of the present invention;

Fig. 7 shows an exemplary generation process of the second porous structure provided by the embodiment of the present invention, in which fig. 7 (a) illustrates a case where a geometric shape of a cylinder and a sphere is mixed by using a volumetric distance function to obtain a second porous structure body, fig. 7 (b) illustrates a case where a second surface plane and a second porous structure body are connected, fig. 7 (c) illustrates a case where a joint domain is connected with the second porous structure body, and fig. 7 (d) illustrates a case where the second porous structure is watertight connected with an adjacent porous structure through the joint domain;

Fig. 8 shows an exemplary process for filling a porous structure into adjacent lattices a and B provided by an embodiment of the invention, in which fig. 8 (a) is an exemplary case of defining a coordinate system within a porous structure unit, fig. 8 (B) is an example of a positional relationship of adjacent lattices a and B in the coordinate system, fig. 8 (c) illustrates connection of the same porous structure between adjacent lattices, and fig. 8 (d) illustrates connection of different porous structures between adjacent lattices;

FIG. 9 illustrates a process for generating a formatted hip-protection model 306 provided by an embodiment of the present invention;

FIG. 10 illustrates a modeling process for a multi-cellular hip-shield model provided by an embodiment of the present invention;

FIG. 11 illustrates a construction process of a hip-guard two-dimensional lattice domain 304 provided by an embodiment of the present invention;

Fig. 12 illustrates a process of porosifying the patterned hip-protection model 306 generated in fig. 9;

FIG. 13 illustrates a comparison of a porosified hip model provided by an embodiment of the present invention with a porosified hip model generated by a conventional modeling method, wherein the porosified hip model illustrated in FIG. 13 (a) has a smooth curved surface, and the porosified hip model illustrated in FIG. 13 (b) is filled with only a conventional implicit curved surface, which does not form a smooth curved surface;

Fig. 14 is a schematic structural diagram of a wearable brace modeling system 600 according to an embodiment of the present invention;

FIG. 15 is a schematic structural view of another wearable brace modeling system provided in accordance with the embodiment of the present invention based on FIG. 14;

fig. 16 is a block diagram of a hardware structure of an electronic device according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The porous structure is widely existing in nature, such as plant rootstock, animal bone, sponge and coral, etc., and fig. 1 shows four kinds of common porous structures, and from two dimensions of the openness and arrangement of pores, the porous structures can be roughly classified into four types of regular openness, regular closeness, random openness and random closeness. The porous structure contains a large number of pores, and the shape, combination and arrangement of the pores provide excellent properties specific to the structure, such as light weight, material saving, buffering, vibration reduction, noise reduction, heat insulation and the like.

Random porous structures are the most common ones, have the characteristics of low density, high specific surface area and the like, but have poorer mechanical properties than regular porous structures, and have larger uncertainty in the regulation and control of the properties due to random distribution of pores, and have high computational complexity in modeling. The regular porous structure is easier to realize performance control in application, wherein the regular closed porous structure has compact pore arrangement, good pressure resistance and poor air permeability, is not suitable for wearing products with higher air permeability requirements like a protective clothing, has good mechanical properties and air permeability, can realize performance control more easily due to regular distribution of pores, can realize lightweight design of the structure, and is a preferred structure of the products like the protective clothing.

The conventional regular porous structure can be classified into a plate structure, a column (rod) structure and a shell structure according to its constituent basic units. Wherein, the plate structure realizes in-plane stress distribution state through proper plate arrangement, so as to reach theoretical strength limit. However, due to manufacturing constraints, the plate structure usually needs to be perforated, which reduces mechanical properties; the column (rod) structure is easy to generate stress concentration at the joint, and the mechanical property is weaker; the mechanical properties of the shell structure are usually in the middle, and the open lattice structure of the shell structure can better meet the high air permeability requirement of products such as wearing protective equipment. In the field of wearing articles, the personalized customization of products is a trend aiming at the shapes, ages, using habits and the like of users, particularly, the wearing protective clothing has higher requirements on the fitting degree of the protective clothing to the wearing parts of the users, otherwise, the energy absorption capacity of the wearing protective clothing cannot be fully exerted, but the personalized customization of the traditional wearing articles mostly depends on manual modification, consumes more time and labor, and has limited production efficiency.

The invention relates to a wearing protective clothing modeling method, a system, electronic equipment and a readable storage medium, wherein the modeling method provided by the invention can design a wearing protective clothing model which has mechanical properties and air permeability and meets personalized requirements of users, the design process is more intelligent and automatic, the design efficiency is improved, and the obtained porous protective clothing model can be directly used for production and manufacture.

As illustrated by the present invention, the wearable brace modeling methods provided by the present invention may be applied to computing devices such as computer systems/servers that may operate with numerous other general purpose or special purpose computing system environments or configurations. Examples of well known computing systems, environments, and/or configurations that may be suitable for use with computing devices, e.g., computer systems/servers, include, but are not limited to: embedded platforms, personal computer systems, server computer systems, thin clients, thick clients, hand-held or laptop devices, microprocessor-based systems, set top boxes, programmable consumer electronics, network personal computers, minicomputers systems, mainframe computer systems, and distributed cloud computing environments that include any of the above systems, and the like.

The wearable protective clothing modeling method provided by the invention can be realized through a software program running in the computing equipment, and the software program can be an executable computer readable code designed in advance or an algorithm model trained by data.

The computing device may be connected to the devices of the manufacturing process through a communication network, including a wireless network and a wired network, where the wireless network includes one or more of a wireless wide area network, a wireless local area network, a wireless metropolitan area network, a wireless personal area network, and the like.

The terms such as "front", "back", "inside" and the like used herein to describe the positional relationship refer to the portion of the three-dimensional object of the brace model that is in contact with the outside or the portion that is not in contact with the outside in the modeling environment, and these terms also refer to the portion such as the portion of the knee pad that is in contact with the outside or the portion that is not in contact when the model is finished to be worn by the user, for example, the portion of the knee pad that is in contact with the wearing site is the surface, the portion of the surface that is opposite to this surface and that is in contact with the outside environment is the back, and the portion that is not in contact with the wearing site nor the outside environment is the inside.

In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

As shown in fig. 2, an optional execution flow of the wearable brace modeling method provided by the embodiment of the present invention is shown, where the flow may include:

And S11, performing three-dimensional scanning on the wearing part of the user to obtain scanning data.

Specifically, the wearing parts of the user can be scanned by various mature three-dimensional scanning means to obtain scanning data, the wearing parts can be heads, elbows, knees, soles, buttocks and the like, and key information of the wearing parts of the user, such as length, width, height, radian, curved surface structure and the like, can be accurately obtained through three-dimensional scanning. The acquired three-dimensional scan data may be stored in the form of, for example, point cloud data.

And S12, constructing a lattice protective clothing model composed of lattices according to the scanning data.

Specifically, reconstructing a model on a computing device from scan data is a well-established modeling means, extracting geometric features from the scan data to reconstruct an interior surface to fit the wearing site, the surface of the model may be determined from preset relationships between personalized features of the user, such as body shape, body weight, movement (activity) type, personal preferences, and the like.

In product model design based on porous structures, it is a viable means to grid the solid model into individual elementary units by voxel-based, each elementary unit being called a lattice, which is a repeating or non-repeating three-dimensional collection of connected nodes, in its simplest form, a plurality of lattice nodes are interconnected by beams, the collection of beams and nodes taking on regular and repeating three-dimensional shapes, filling the porous structure within each lattice to form the porous wearable brace model.

In the aspects provided by the invention, the porous structure is not directly mapped into the solid model, but the solid model is divided into a plurality of lattices with uniform size, and then different porous structures are filled in different lattices according to the structure of the wearing protector.

In a further embodiment, the step S12 may include the following steps:

S121, constructing a protective clothing solid model and a protective clothing three-dimensional lattice structure according to the scanning data.

Specifically, the protective clothing solid model is a fusion model for reconstructing an internal structure and reconstructing a surface according to the scan data in the step S11, so that structural features of a wearing part can be completely presented, and the three-dimensional structure of the protective clothing constructs a three-dimensional lattice domain with the outline of the wearing part as a boundary, and the lattices are uniformly distributed and uniform in size.

The above-mentioned three-dimensional lattice structure of the protective equipment is constructed by offsetting the two-dimensional lattice coordinates in the extrusion direction, and constructing the two-dimensional lattice before and after the offset into a three-dimensional lattice, and the process can also be implemented by various commercial modeling software programs, in order to improve the modeling efficiency, the embodiment of the invention provides the following execution flow for generating the two-dimensional lattice domain of the protective equipment:

and S1211, constructing a two-dimensional protective clothing outline according to the scanning data.

And S1212, generating a two-dimensional triangular lattice domain filled with the first triangular lattice by using a triangulation algorithm (Delaunay algorithm) and taking the two-dimensional protector contour as a boundary.

And S1213, reconstructing the connection of the first triangular lattice in the two-dimensional triangular lattice domain to generate a mixed lattice domain filled with the second triangular lattice and the first quadrangle.

S1214, splitting the second triangular lattice and the first quadrilateral lattice to generate a quadrilateral lattice domain filled with the second quadrilateral lattice.

And S1215, mapping the quadrilateral lattice domain into the outline of the two-dimensional protective clothing, and outputting the two-dimensional lattice domain of the protective clothing.

And S122, mapping the three-dimensional lattice structure of the protective clothing to the protective clothing entity model to obtain a latticed protective clothing model.

The solid model of the protective clothing is lattice-patterned in the step S122, the obtained lattice-patterned protective clothing model is almost fully attached to the wearing part, the model is porous in the subsequent steps, namely, each lattice is filled with a porous structure unit, and the joints of the porous structures of the adjacent lattices are smooth and have the characteristic of full communication. The size, distribution and shape of the pores in the porous structure influence the performance of the porous structure, and the control of the size, density and the like of the crystal lattice in the process of lattice formation can realize the control of the performance of the porous structure.

S13, obtaining a plane array of a crystal lattice in the lattice protective equipment model, and determining a surface crystal lattice, an edge crystal lattice and an internal crystal lattice according to the plane array of the crystal lattice, wherein the plane array represents the relative position relation of planes forming the crystal lattice.

Specifically, in order to improve the fit degree and wearing comfort degree between the wearing protector and the wearing part, in the process of porosifying the lattice protector model, the embodiments provided by the invention provide a new filling mode, namely, the porous structure filled by each lattice is determined according to the relative position between the wearing part and the wearing part when the protector is worn, so that the porosifying protector model has a smooth curved surface. The lattice in the patterned brace model can thus be divided into a surface lattice, which constitutes a non-edge region of the modeling space surface, an edge lattice, which constitutes an edge region of the modeling space surface, and an internal lattice, which constitutes an internal structure of the modeling space. Taking the patterned knee pad model as an example, the surface lattice forms a non-edge portion of the patterned knee pad model that contacts the external environment, the edge lattice forms an edge portion of the patterned knee pad model that contacts the external environment, such as a junction of two flat surfaces, and the internal lattice forms a portion of the patterned knee pad model that does not contact the external environment.

As an example, the lattice planes may be divided into joint planes, which are planes common to adjacent lattices, and non-joint planes, which are planes other than joint planes constituting the lattice, the joint planes and non-joint planes of the lattice being represented by binarization, and a plane array of the lattice is generated from the result of the binarization.

In addition, the form of the crystal lattice is not particularly limited, and the crystal lattice may be a usual column, tetrahedron, hexahedron, or the like.

In an exemplary aspect, taking a hexahedral lattice as an example, one lattice is composed of six planes, the relative positional relationship of six plane components of the lattice can be expressed using (x+, X-, y+, Y-, z+, Z-) according to the relative positions of the planes in the coordinate system, the process of binarizing the expression lattice can express the joint plane and the non-joint plane with 0 and 1, respectively, then the plane array of the surface lattice can be expressed as [0,0,0,1,0,0] or [0,1,0,0,0,0], the plane array of the edge lattice can be expressed as [1,0,0,1,0,0], and the plane array of the internal lattice can be expressed as [0, 0]. The lattice type and connectivity between the lattices can be determined by a planar array of lattices to select different porous structure fills.

In an exemplary aspect, a process of determining the surface lattice, the edge lattice, and the internal lattice from the planar array of lattices in step S13 is described with hexahedral lattice as an example.

The modeling space is divided into a plurality of hexahedrons after being rasterized, each hexahedron has 8 vertexes, so that a vertex array of the lattice can be obtained, a plane array of the lattice is generated according to the vertex array, and an example here is illustrated by a modeling space consisting of 27 hexahedral lattices.

As shown in fig. 3 (a), each of the 27 lattices can be regarded as a hexahedron having 8 vertices, the vertices are numbered with numbers of 1 to 8, one lattice can be represented by a vertex array [1,2,3,4,5,6,7,8], coordinates of the respective vertices can be located according to the vertex array as in the case shown in fig. 3 (b), and thus the shape and the position of the modeling space of the lattice can be determined, and in other exemplary aspects one lattice can be directly represented by a vertex coordinate set.

As shown in fig. 3 (b), a hexahedral lattice has 6 planes, and 6 plane lattices including [6,2,3,7], [4,1,5,8], [3,4,8,7], [1,2,6,5], [5,6,7,8], [1,4,3,2], corresponding to the aforementioned plane positional relationship expressions (x+, X-, y+, Y-, z+, Z-) can be determined from the node arrays [1,2,3,4,5,6,7,8 ].

The joint plane proposed in the aspects of the present invention represents a plane shared by adjacent lattices, the non-joint plane is a plane of a lattice except for the joint plane, and 0 and 1 represent the joint plane and the non-joint plane, respectively, so that each lattice can define a binary plane array, as shown in fig. 3 (c) to 3 (f), respectively representing a corner lattice, a surface lattice, an edge lattice and an internal lattice of a modeling space, and the plane arrays can be represented as [1,0,0,1,1,0], [0,0,0,1,0,0], [1,0,0,1,0,0], [0, 0] respectively. In some embodiments, the corner lattice may be considered a specialized form of the edge lattice.

Thus, the position of the lattice within the modeling space can be determined from the binarized planar array of lattices to determine the surface, edge and interior lattices.

It will be appreciated that the planar array representation shown above is only an example given by way of illustration of the working principle of the embodiments of the present invention, and that other ways of representing lattice types according to aspects of the present invention, such as representing the joint and non-joint faces with 1 and 0 respectively, or directly by lattice vertex coordinates, are within the scope of the claimed invention.

And S14, filling the surface lattice, the edge lattice and the internal lattice with the first porous structure, the second porous structure and the third porous structure respectively to obtain the porous protective tool model with the smooth curved surface.

The porous structure is generated by an implicit surface modeling method, the implicit surface does not directly reflect information of any point on the surface, only the relation satisfied by all points on the surface can be presented, and common implicit surfaces include algebraic surfaces, distance functions, level sets, parting geometry and the like. The hidden curved surface has great advantages in judging internal and external relations, smoothly fusing the models, expressing complex topological relations and the like, the shape of the porous structure can be regulated and controlled through the function expression parameters of the hidden curved surface, the generated porous structure is smooth and regular and periodically changes along the direction of a coordinate axis, the modeling process of the protective tool model is continuous and controllable, the surface is smooth, the problem of stress concentration is not easy to generate, and the protective tool finished product has excellent specific strength.

Most of the connecting areas of the hidden curved surface only have the edges of the curved surface units, no surface plane is formed, and in order to improve the smoothness and wear resistance of the finished product of the protective clothing and improve wearing comfort, the surface plane is required to be increased compared with the traditional porous structure by the modeling method of the wearing protective clothing provided by the aspects of the invention so as to form a seamless curved surface of the protective clothing. It will be appreciated that the porous structure filled in the surface lattice and the edge lattice needs to have surface planes, since both constitute the surface area of the patterned brace model.

In an example aspect, a triple periodic minimum curved surface (TPMS) constructed by an implicit curved surface modeling method is a remarkable representation of a regular porous structure, the TPMS is smooth and continuous, and shows periodic regular changes in X, Y, Z directions, so that a porous structure which is fully communicated, high in porosity and not self-crossed can be constructed, a clear implicit function expression is provided, the geometric characteristics of the curved surface can be changed by simple implicit parameter adjustment, and the modeling degree of freedom is higher. Typical TPMS have P units, D units, G units, shell P units, shell D units, shell G units, etc., and geometric features of the TPMS units, such as pore size, density, etc., can be controlled by implicitly expressing Φ (x, y, z) =c.

In some embodiments, when the first porous structure is generated using the implicit surface modeling method, the method may include the steps of:

And generating a first porous structure body by using an implicit surface modeling method, determining the plane of a first hole, wherein the first hole is a hole facing the surface of the latticed protective clothing model in the first porous structure body.

Constructing a first quadrilateral plane on the plane of the first hole, generating a first trimming domain by utilizing implicit function expression of the first porous structure body, removing the first trimming domain in the first quadrilateral plane to form a first contour, seamlessly matching the first contour with the contour of the first hole, and cutting four corners of the first quadrilateral plane by utilizing a sphere to obtain a first surface plane and carrying out meshing on the first surface plane.

Connecting the first surface plane of the lattice and the first porous structure body generates a first porous structure such that the first surface plane forms a non-edge portion of the lattice guard model surface.

In a further example, the first pruned field may be generated by: and calculating an equivalent contour line of the implicit function expression of the first porous structure body in the z-plane, and generating a first clipping domain in the first quadrilateral plane by using the equivalent contour line.

In an example aspect, taking a TPMS as the first porous structure body as an example, a typical TPMS does not form a surface plane, and the communication area is limited to only the edge of the TPMS unit, and fig. 4 shows a process of generating a first surface plane based on the TPMS unit. TPMS is expressed by implicit functionDividing a modeling space into two independent subspacesAndThe outer area and the inner area of the curved surface are respectively, the hexahedral plane at z=zi shown in fig. 4 (a) is trimmed by a domain defined by the implicit function expression of the TPMS, the contour line where the implicit function is expressed is calculated to obtain a trimming domain, the trimming contour which is the same as the contour of the TPMS aperture is formed on the plane of the modeling space, and the trimming domain on the plane is calculated by using the implicit function expression of the TPMS, so that the plane can be seamlessly matched with the TPMS unit. Fig. 4 (b) and (c) illustrate a case of cutting corners of a hexahedral plane using a sphere, so that a surface plane as shown in fig. 4 (d) can be obtained by in-plane trimming and corner cutting, and then connecting the surface plane generated in fig. 4 and the TPMS unit by the connection process shown in fig. 5 generates a first porous structure for filling the surface lattice as shown in fig. 5.

Other porous structures requiring a surface plane may be similarly created, not enumerated here.

In a further example, when the first porous structure is generated by using the implicit surface modeling method, besides the method of clipping the plane, the porous structure with the surface plane can be directly generated by modifying the functional expression of the implicit surface, that is, the control equation of the first porous structure isThe control equation can generate a surface plane at z=zi while generating a porous structure body, Φ (x, y, z) represents an implicit function expression of the implicit curved surface, N represents a positive number, usually takes a larger value, accelerates the function value into a negative range, and k represents a positive number smaller than 1. The control equation form can also be used to generate a surface plane at the plane of other holes of the implicit surface.

In an exemplary aspect, still taking TPMS as an example, fig. 6 shows that for three TPMS units, the simultaneous generation of the surface plane and the porous structure body is achieved by modifying the control equation of the porous structure. Taking P units as an example, for example, when a surface lattice takes a P unit of TPMS as a porous structure body, assuming that the implicit function of the P unit is expressed as Φ _P (x, y, z) =cos (ωx) +cos (ωy) +cos (ωz) -0.2, the control equation of the surface lattice-filled porous structure can be defined asN is a fairly large positive number, 0 < k <1.

In some embodiments, when the second porous structure is generated using the implicit surface modeling method, the method may include the steps of:

and performing geometric body mixing by utilizing a volume distance function of the cylinder and the sphere to generate a second porous structure body.

And determining the plane of a second hole, wherein the second hole is a hole facing the surface of the latticed protective clothing model in the second porous structure body.

And constructing a second quadrilateral plane on the plane of the second hole, generating a second trimming domain by using a control equation of the second hole, removing the second trimming domain in the second quadrilateral plane to form a second contour, seamlessly matching the second contour with the contour of the second hole, cutting four corners of the second quadrilateral plane by using a sphere, outputting and lattice the second surface plane, and connecting the lattice second surface plane and the second porous structure body, so that the second surface plane forms an edge part of the lattice protector model surface.

Specifically, the edge lattices proposed in the aspects of the present invention are used to form edge regions of the patterned brace model surface, which regions have an angular connection angle, so that the most ideal porous structure is not directly mapped to the implicit surface of the same control equation, but the geometric shape is first mixed by using the volumetric distance function of the cylinder and the sphere, and then the surface plane of the porous structure body is generated by using a method similar to the aforementioned method for generating the surface plane. In order to establish watertight connection between different hidden curved surface units, a joint domain is generated by using a control equation of adjacent porous structures, and the joint domain seamlessly connects the two adjacent porous structures to finally obtain a second porous structure for filling an edge lattice.

In an example aspect, taking a TPMS as an example, fig. 7 illustrates a process of generating a second porous structure based on a TPMS unit. As shown in fig. 7 (a), the geometric shapes of the cylinder and the sphere are mixed by using the volume distance function to obtain a second porous structure body, and the porous structure based on the column or the beam can smoothly transition the adjacent surfaces of the protective clothing model, so that the fitting degree and wearing comfort of the finished protective clothing are improved; FIG. 7 (b) shows a case where a second surface plane and a second porous structure body are connected, and the plane of which hole the second surface plane is connected to is determined by a specific lattice connection relationship; fig. 7 (c) shows a case of connecting a joint domain with a second porous structure body, in which a TPMS unit is illustrated as a connected adjacent porous structure, and a transition between different TPMS units may be determined by a spatial weight function γ, whose value varies between 0 and 1, and may be represented by using the following sigmoid function:

Φ_hybrid＝γΦ_TPMS1+(1-γ)Φ_TPMS2

Where Φ _TPMS1 and Φ _TPMS2 represent implicit function expressions of two different TPMS units connected, respectively, G (x, y, z) represents a control function describing a transition layer, and r is used to control the width of the transition layer.

In a further embodiment, the non-associated faces of the crystal lattice are defined, i.e. the plane of the surface planes in the porous structure, typically the surface planes of the porous structure, such as the aforementioned first and second surface planes, are defined to be in the same plane as the non-associated faces of the crystal lattice.

In a further embodiment, the third porous structure is used to fill the internal structure, and may not have a surface plane, but only need to maintain connectivity between lattices, so that a smooth and fully connected implicit surface may be generated by using a conventional implicit surface modeling method.

By adjusting the relative density and thickness of the porous structure, the yield strength and energy absorbing capacity of the brace can be varied to meet the individual needs of different users, such as the internal lattice filling the thicker shell porous structure units and the surface area filling the lower density soft porous structure units.

In a further embodiment, the lattice filling process in step S14 may be a mapping process performed according to a shape function, in which the porous structure is filled into the lattice by mapping the nodes of the porous structure, and similarly, taking the STL file as an example, the modeling space of the porous structure is stored as a node coordinate set and a connectivity representation of the node set, and the new STL file can be obtained by mapping the node coordinates while the connectivity is kept unchanged.

In an example aspect, fig. 8 illustrates a process of filling a porous structure generated by implicit surface modeling into adjacent lattices a and B. FIG. 8 (a) illustrates a case where a coordinate system is defined within a porous structural unit, and when mapping the porous structural unit to adjacent lattices A and B in the lattice model illustrated in FIG. 8 (B), it is always desirable to maintain the integrity of the model, and it is necessary to maintain the same nodes on the joint plane of the lattices, so that if two porous structural units are of the same structure with respect to the XOZ plane, the integrity can be automatically satisfied, as shown in FIG. 8 (c); if the porous structure unit structure is different, the integrity can be achieved by keeping the nodes on the joint plane the same, as shown in FIG. 8 (d).

The filled porous protective clothing model in step S14 has a fully connected and smooth porous structure, and can be directly used for manufacturing finished products, for example, additive manufacturing technology including, but not limited to SLS, DLP, FDM and other technologies, and can also be other mature three-dimensional forming technologies.

The three-dimensional lattice protective clothing model generated by the modeling method fully considers the individual requirements of users with different ethnicities, sexes, body types and the like, and the three-dimensional lattice protective clothing model is more fit and comfortable to wear. The traditional protective clothing is large in size and is mostly made of thicker energy absorbing materials, the air permeability is poor, the modeling method provided by the aspects of the invention adopts a high-porosity regular porous structure, and an implicit curved surface is further used, so that the overall density of the protective clothing is low, but excellent energy absorbing capacity is still maintained, and the protective clothing is more breathable due to the porous structure, so that wearing experience is better. In addition, the porous structure uses less materials, the protective clothing is light in weight, the use of raw materials is reduced, the material cost is reduced, and the protective clothing is more environment-friendly.

The following further describes a modeling method for the wearable protective clothing provided by the embodiment of the invention by taking hip protection as an example.

Referring to fig. 9 and 10, the process of creating a patterned hip protection model and a porous hip protection model is shown. FIG. 10 shows steps performed by the overall modeling process, including:

step s21, three-dimensional scanning is performed on the hip of the user to obtain point cloud data 301.

And S22, constructing a lattice hip protection model consisting of lattices according to the point cloud data 301.

Referring to fig. 9 specifically, two maintenance hip contours 302 and a hip protection solid model 303 are constructed according to the point cloud data 301, and the hip protection solid model 303 is a fusion model for performing internal structure reconstruction and surface reconstruction according to the point cloud data 301, so that structural features of the hip can be more completely presented; lattice formation is carried out in the two-dimensional hip protection outline 302 to obtain a hip protection two-dimensional lattice domain 304, and the hip protection two-dimensional lattice domain 304 is extruded to obtain a hip protection three-dimensional lattice structure 305; the three-dimensional hip-protecting lattice structure 305 is mapped to the hip-protecting solid model 303 to obtain a formatted hip-protecting model 306.

The above process of constructing the hip-protecting two-dimensional lattice domain 304 is schematically shown in fig. 11, and the specific implementation process corresponds to steps S1211 to S1215 in the foregoing embodiment one by one, and the detailed description is referred to in the foregoing description, which is not repeated here.

S23, obtaining a plane array of lattices in the formatted hip-protection model 306, and determining a surface lattice, an edge lattice and an internal lattice according to the plane array of the lattices, wherein the plane array represents the relative position relation of planes forming the lattices, the surface lattice forms a non-edge area of the surface of the formatted hip-protection model 306, the edge lattice forms an edge area of the surface of the formatted hip-protection model 306, and the internal lattice forms the internal structure of the formatted hip-protection model 306.

And S24, filling the surface lattice, the edge lattice and the internal lattice with a first porous structure, a second porous structure and a third porous structure respectively to obtain the porous hip protection model for manufacturing the hip protection.

As illustrated in fig. 12, a TPMS unit is used herein as a porous structure body with reference to the direction of the hip guard with respect to the human body when worn by the user, and the upper surface lattice and the lower surface lattice illustrated in fig. 12 are respectively filled with a first porous structure 401 and a second porous structure 402 having surface planes, the two lattice-filled TPMS units being different in the orientation of the surface planes; the edge lattice-filled TPMS units have joint domains and surface planes, the body of the third porous structure 403 is generated by geometric shape mixing using a volumetric distance function of a cylinder and a sphere, the joint planes are generated by implicit functional expressions of adjacent TPMS units, and the orientation of the surface planes in the third porous structure 403 can be determined according to the specific position of the lattice.

Fig. 13 (a) and 13 (b) respectively illustrate a porous hip-protection model with a smooth curved surface and without a smooth curved surface, and the porous hip-protection model illustrated in fig. 13 (a) is generated by modeling in the above embodiment, and the porous structure filled with the surface lattice and the edge lattice has surface planes, such as the first surface plane and the second surface plane, so that the porous hip-protection model forms a smooth curved surface, has better pore connectivity, greatly improves wearing comfort, ensures tight fitting between the hip-protection model and the hip, and can exert excellent damping capability thereof; fig. 13 (b) illustrates a porous hip-protection model filled with only conventional implicit curved surfaces, and the connected domains only exist at the edges of the porous structural units, so that the manufactured hip-protection model has rough surface texture, reduced wear resistance and poor wearing experience for users.

The wearable brace modeling system provided by the embodiment of the invention is described below, and the wearable brace modeling system described below and the wearable brace modeling method described above can be referred to correspondingly.

First, in connection with fig. 14, the wearable brace modeling system 600 can include:

The three-dimensional scanning module 610 is configured to perform three-dimensional scanning on a wearing part of a user to obtain scanning data;

a model lattice module 620 configured to construct a lattice brace model composed of lattices from the scan data;

The lattice positioning module 630 is configured to obtain a planar array of lattices in the patterned protective tool model, and determine a surface lattice, an edge lattice and an internal lattice according to the planar array of lattices, wherein the planar array represents a relative positional relationship of planes constituting the lattices, the surface lattice constitutes a non-edge region of the patterned protective tool model surface, the edge lattice constitutes an edge region of the patterned protective tool model surface, and the internal lattice constitutes an internal structure of the patterned protective tool model;

the lattice filling module 640 is configured to fill the surface lattice, the edge lattice, and the internal lattice with the first porous structure, the second porous structure, and the third porous structure, respectively, resulting in a porous brace model having a smooth curved surface.

Optionally, the model meshing module is further configured to:

Optionally, as illustrated in fig. 15, the modeling system 600 further includes a porous structure generation module 650 configured to generate a first porous structure, a second porous structure, and a third porous structure for filling the lattice.

Optionally, when the porous structure generation module 650 is configured to generate the first porous structure, it is specifically configured to:

Optionally, the porous structure generation module is further configured to:

Optionally, when the porous structure generation module is configured to generate the first porous structure, the porous structure generation module is specifically configured to:

Optionally, when the porous structure generation module is configured to generate the second porous structure, the porous structure generation module is specifically configured to:

Optionally, when the porous structure generation module is configured to generate the third porous structure, the porous structure generation module is specifically configured to:

Optionally, the modeling system further includes a plane array generating module configured to:

acquiring a vertex array of a crystal lattice, wherein the node array represents position information of vertices forming the crystal lattice;

A planar array of the lattice is generated from the array of vertices.

Optionally, the plane array generating module is further configured to:

The specific implementation logic of each module may refer to the relevant description of the modeling method portion of the wearable brace provided in each embodiment, which is not repeated herein.

The wearable brace modeling system 600 provided by the embodiment of the invention can be applied to an electronic device, and fig. 16 shows a hardware structure block diagram of the electronic device. Referring to fig. 16, the electronic device may include: at least one processor 1, at least one communication interface 2, at least one memory 3 and at least one communication bus 4;

In the embodiment of the application, the number of the processor 1, the communication interface 2, the memory 3 and the communication bus 4 is at least one, and the processor 1, the communication interface 2 and the memory 3 complete the communication with each other through the communication bus 4;

the processor 1 may be a central processing unit CPU, or an Application-specific integrated Circuit ASIC (Application SPECIFIC INTEGRATED Circuit), or one or more integrated circuits configured to implement embodiments of the present invention, etc.;

The memory 3 may comprise a high-speed RAM memory, and may further comprise a non-volatile memory (non-volatile memory) or the like, such as at least one magnetic disk memory;

The memory stores a program, and the processor may call the program stored in the memory, so as to implement each processing flow of the foregoing embodiments in the wearing protective clothing modeling scheme.

The wearable brace modeling system 600 generally includes a variety of computer-readable media, which can be any available media that can be accessed by the wearable brace modeling system 600 and includes both volatile and nonvolatile media, removable and non-removable media. By way of example, and not limitation, computer readable media may comprise computer storage media and communication media. These media store programs adapted for execution by a processor, which when executed may be used to implement the processes of the foregoing example aspects, the logic of which may be referred to in the relevant description of the foregoing example aspects.

The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method of modeling a wearable brace, comprising:

constructing a protective clothing entity model and a protective clothing three-dimensional lattice structure according to the scanning data, and mapping the protective clothing three-dimensional lattice structure to the protective clothing entity model to obtain a latticed protective clothing model;

Obtaining a plane array of a lattice in the patterned protective tool model, and determining a surface lattice, an edge lattice and an internal lattice according to the plane array of the lattice, wherein the plane array represents the relative position relation of planes forming the lattice, the surface lattice forms a non-edge area of the surface of the patterned protective tool model, the edge lattice forms an edge area of the surface of the patterned protective tool model, and the internal lattice forms an internal structure of the patterned protective tool model;

Filling the surface lattice, the edge lattice and the internal lattice with a first porous structure, a second porous structure and a third porous structure respectively to obtain a porous protective tool model with a smooth curved surface;

the first porous structure, the second porous structure and the third porous structure have different implicit surface function expression parameters.

2. The method of modeling a wearable brace of claim 1, wherein constructing the brace three-dimensional lattice structure from the scan data comprises:

3. The method of modeling a wearable brace of claim 2, wherein constructing the brace two-dimensional lattice domain from the scan data comprises:

Generating a two-dimensional triangular lattice domain filled with a first triangular lattice by using the two-dimensional protective clothing outline as a boundary through a triangulation algorithm;

reconstructing the connection of the first triangular lattice in the two-dimensional triangular lattice domain to generate a mixed lattice domain filled with a second triangular lattice and a first quadrangle;

splitting the second triangular lattice and the first quadrangular lattice to generate quadrangular lattice domains filled with the second quadrangular lattice;

Mapping the quadrilateral lattice domain into the two-dimensional protective clothing outline, and outputting the protective clothing two-dimensional lattice domain.

4. The method of modeling a wearable brace of claim 1, wherein the process of generating the first porous structure comprises:

generating a first porous structure body by using an implicit surface modeling method, and determining the plane of a first hole, wherein the first hole is a hole facing the surface of the lattice protective clothing model in the first porous structure body;

Constructing a first quadrilateral plane on the plane of the first hole, generating a first trimming domain by using an implicit function expression of the first porous structure body, removing the first trimming domain in the first quadrilateral plane to form a first contour, seamlessly matching the first contour with the contour of the first hole, cutting four corners of the first quadrilateral plane by using a sphere, outputting a first surface plane and lattice-forming the first surface plane;

Connecting the first surface plane and the first porous structure body of the meshing generates the first porous structure such that the first surface plane forms a non-edge portion of the porous brace model surface.

5. The method of modeling a wearable brace of claim 4, wherein generating a first trim domain using an implicit functional expression of the first porous structure body comprises:

Calculating an equivalent contour line of the implicit function expression of the first porous structure body in a z-plane;

the first pruned domain is generated within the first quadrilateral plane using the contour.

6. The method of modeling a wearable brace of claim 1, wherein the process of generating the first porous structure comprises:

The control equation for establishing the first porous structure is expressed as

V (x, y, z) represents an implicit functional expression of the first porous structure body, N represents a positive number, k represents a positive number less than 1;

A first porous structure is generated using the control equation.

7. The method of modeling a wearable brace of claim 1, wherein the second porous structure is generated by:

Determining a plane of a second hole, wherein the second hole is a hole facing the surface of the latticed protective clothing model in the second porous structure body;

Constructing a second quadrilateral plane on the plane of the second hole, generating a second trimming domain by using a control equation of the second hole, removing the second trimming domain in the second quadrilateral plane to form a second outline, seamlessly matching the second outline with the outline of the second hole, cutting four corners of the second quadrilateral plane by using a sphere, outputting a second surface plane, performing lattice formation on the second surface plane, and connecting the crystallized second surface plane and the second porous structure body so that the second surface plane forms an edge part of the porous protector model surface;

and generating a joint domain by using a control equation of a porous structure adjacent to the second porous structure body, wherein the joint domain is used for connecting the second porous structure with the adjacent porous structure, and connecting the joint domain with the second porous structure body to generate the second porous structure, and the second porous structure comprises the second porous structure body, a second surface plane and the joint domain.

8. A wearable brace modeling system, comprising:

the model lattice module is configured to construct a protective clothing entity model and a protective clothing three-dimensional lattice structure according to the scanning data, and map the protective clothing three-dimensional lattice structure to the protective clothing entity model to obtain a lattice protective clothing model;

A lattice positioning module configured to acquire a planar array of lattices in the patterned guard model, determine a surface lattice, an edge lattice and an internal lattice according to the planar array of lattices, wherein the planar array represents a relative positional relationship of planes constituting the lattices, the surface lattice constitutes a non-edge region of the patterned guard model surface, the edge lattice constitutes an edge region of the patterned guard model surface, and the internal lattice constitutes an internal structure of the patterned guard model;

and the lattice filling module is configured to fill the surface lattice, the edge lattice and the internal lattice with a first porous structure, a second porous structure and a third porous structure respectively to obtain a porous protective tool model with a smooth curved surface, wherein the first porous structure, the second porous structure and the third porous structure have different implicit curved surface function expression parameters.

9. An electronic device comprising a memory storing computer-executable instructions and a processor that, when executed by the processor, cause the electronic device to perform the method of modeling a wearable brace as defined in any one of claims 1-7.

10. A readable storage medium, characterized in that a computer executable program is stored, which when executed, implements the wearing apparel modeling method as claimed in any one of claims 1 to 7.

11. A wearable brace made using an additive manufacturing technique, wherein the additive manufacturing technique uses the porous brace model generated by the wearable brace modeling method of any one of claims 1-7 as a digital model.