CN113111435B - Automobile wire harness three-dimensional model construction method based on shortest path model - Google Patents
Automobile wire harness three-dimensional model construction method based on shortest path model Download PDFInfo
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/18—Network design, e.g. design based on topological or interconnect aspects of utility systems, piping, heating ventilation air conditioning [HVAC] or cabling
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
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- G06F2113/00—Details relating to the application field
- G06F2113/16—Cables, cable trees or wire harnesses
Abstract
The invention relates to a method for constructing an automobile wire harness three-dimensional model based on a shortest path model; modeling layer by layer from the trunk to the branches, and comparing the spatial distances of the electric devices to determine the trunk of the wiring harness according to the modeling mode of the spatial minimum distance; determining other electric device branches; obtaining an initial data model; determining fixed points on the wire harness, obtaining a wire harness fixed point region by adopting a mode of intersecting a spherical surface and a wire harness model, and determining the positions of all the fixed points on the wire harness to obtain a data model A; a fixed mode of a fixed point is added on the basis of the data model A to obtain a data model B; on the basis of the data model B, increasing the assembly allowance design according to the assembly requirement to obtain a data model C; and adding an external protection design according to actual requirements on the basis of the data model C to obtain a final data model of the wire harness. The invention ensures that the wiring harness model is the shortest path scheme, realizes the optimization of the layout scheme, improves the one-time design success rate and the design quality of the wiring harness model, and realizes the cost optimization of the wiring harness from the wiring harness layout path.
Description
Technical Field
The invention belongs to the technical field of wire harnesses, and relates to a method for constructing a three-dimensional model of an automobile wire harness based on a shortest path model.
Background
The existing three-dimensional model design of the automobile wire harness is usually based on model design of environmental data, the condition that the shortest path exists in a wire harness arrangement path can cause the cost of the wire harness to be increased, meanwhile, the wire harness path has redundancy, and certain influence can be caused on the transmission of signals of the whole automobile, power supply and EMC of the whole automobile. Poor three-dimensional models of wire harnesses can lead to the wire harness to assemble inconveniently, and the wire harness can not be well fixed under the whole vehicle environment, and the safety distance between the wire harness and peripheral parts is too close, even causes the reliability of the wire harness to reduce.
There is currently no implementation similar to that set forth in the present invention. The invention relates to a wire harness model construction method, which is a model construction method based on a space shortest path in a layered and step-by-step manner. The existing wiring harness three-dimensional model building method is based on environment data, and the shortest path of the wiring harness is not required or mentioned in the model building.
The invention discloses a 3D design system of a wire harness, which is characterized by comprising a part library, a 3D design module and a process file module, wherein the part library is used for storing a part to be designed and the process file module is used for storing a part to be designed; the part library comprises a part information library, a part 3D digital-to-analog library and a part 2D digital-to-analog library; the 3D design module comprises a wiring module, a definition module and a 3D process module; the process file module calls a 2D digital-to-analog library according to the 3D design drawing acquired by the 3D design module to generate a board drawing; and modifying default process parameters of the system according to the requirement of a wiring harness layout of a supplier, wherein the default process parameters comprise line number identification, a code spraying/sleeve pipe mode, a split charging sequence and lead loss corresponding to different processes. The design system outputs the 3D diagram with accuracy and details, improves design effectiveness and accuracy, combines electrical diagrams, wiring harness paths and process requirements, adds the trend and process of each lead to the initial 3D diagram, displays the result more accurately, can obtain the wire diameter directly according to the 3D diagram, and does not need to calculate the wire diameter.
Patent document CN106024208B "three-dimensional modular wiring and detection integrated device for manufacturing wire harness", a three-dimensional modular wiring and detection integrated device for manufacturing wire harness, which is characterized by mainly comprising: a wiring tool plate assembled by a plurality of porous wiring boards (1); the angle adjusting mechanism of the angle of the wiring board is assembled by a supporting rod (4) with adjustable length, a supporting seat (3) and a sliding block (20) matched with the supporting seat; a positioning seat (11) and a binding belt (13) for fixing the wiring harness; a connector (6) for harness detection; a U-shaped fork element (14) for guiding; a cabinet (2) for wiring harness detection; the invention aims at the structural characteristics of different types of wire harnesses, corresponds to the combination mode of the wiring device, has good universality, is more close to the actual wiring structure, and can realize three-dimensional wiring and detection integration.
Patent document CN112149262A "a bundling wire and a method for constructing a three-dimensional design model of a bundling wire", the invention discloses a bundling wire and a method for constructing a three-dimensional design model of a bundling wire, the bundling wire comprises a plurality of bundling wire cores, a coating is arranged outside the bundling wire, the bundling wire is provided with a plurality of stages of wire harness branches, and a inflection part is further arranged at a branch point of a branch central axis; the construction method comprises the following steps: selecting a construction form of a multi-core wire model, and constructing an initial model of a multi-core bundling wire; solving the diameter information and the physical attribute information of each branch wire harness according to the manufacturing process parameters of the wire harness, and constructing a space curve model of the central axis of the wire harness; and constructing an energy function model of the bundling line based on the information, solving a space curve initial model function of the central axis of the bundling line, and constructing a three-dimensional design model of the bundling line in three-dimensional space software based on the diameter information of the bundling line. The invention aims to solve the problems of low fidelity and poor design quality of a three-dimensional design model of a wire harness caused by not considering the manufacturing process of the wire harness and the actual physical properties of the wire harness in the traditional scheme.
The present invention is completely different from the above-identified patents in terms of overall design and construction. The invention relates to a three-dimensional model construction method for an automobile wire harness, which does not limit a three-dimensional design system, makes detailed requirements on a method for selecting a trunk, a branch and a positioning point of the wire harness in a layered step-by-step mode, and can realize the shortest path modeling of the wire harness model, the shortest path and the optimal cost of the wire harness.
Disclosure of Invention
The invention aims to solve the technical problem of solving the problem of optimal path of a wire harness in the prior art, and provides a method for constructing a three-dimensional model of the automobile wire harness based on a shortest path model.
It is noted that, herein, 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. Also, 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.
The invention provides a method for constructing a three-dimensional model of an automobile wire harness based on a shortest path model, which describes the construction process of the three-dimensional model of the wire harness, a setting method of a trunk/branch of the wire harness and a selection method of a fixed point of the wire harness in detail. By using the three-dimensional model construction method, the wiring harness model can be ensured to be the shortest path scheme, the optimization of the layout scheme is realized, meanwhile, the selection of the fixed point can be ensured to be within the design requirement, the one-time design success rate and the design quality of the wiring harness model are improved, and the cost optimization of the wiring harness is also realized from the wiring harness layout path.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method for constructing an automobile wire harness three-dimensional model based on a shortest path model is characterized in that layer-by-layer modeling is carried out in a mode from a trunk to branches, and meanwhile, a modeling mode of a space minimum distance is followed in each layer of modeling, and specifically comprises the following steps:
comparing the space distances of the electric devices to determine a trunk of the wiring harness; after the trunk is determined, determining branches of other electric devices;
adjusting the trend of the trunk and the branches according to the environmental data to obtain an initial data model;
determining a fixed point on the wire harness, obtaining a wire harness fixed point region by adopting a mode that a spherical surface is intersected with a wire harness model, and finally determining the positions of all the fixed points on the wire harness to obtain a data model A;
a fixed mode of a fixed point is added on the basis of the data model A to obtain a data model B;
on the basis of the data model B, increasing the assembly allowance design according to the assembly requirement to obtain a data model C;
and adding an external protection design according to actual requirements on the basis of the data model C to obtain a final data model of the wire harness.
In the technical scheme, comparing the space distances of the electric devices to obtain the trunk of the wiring harness comprises the following steps:
the method comprises the following steps: collecting and determining environmental data of a wire harness model to be arranged;
step two: determining the position P of all electrical devices in the area where the wiring harness model needs to be laid out1、P2…PnTo obtain a coordinate set Px{P1,P2…Px}；
Step three: according to the coordinate set PxAnd determining the main trunk L of the wiring harness according to the spatial position relationship of each point.
The method for obtaining the final data model of the wire harness in the technical scheme specifically comprises the following steps:
the method comprises the following steps: set of coordinates PxExcept the starting point and the stopping point of the trunk L, drawing a perpendicular line from the position points of other (n-2) electric devices to the trunk L to obtain (n-2) branches and (n-2) branch points on the trunk;
step two: adjusting the direction of the wire harness trunk according to the environmental data and the design requirement, so that the data model of the wire harness trunk keeps a safe distance with the environmental data;
step three: adjusting the trend of (n-2) wire harness branches according to the environmental data and design requirements, and keeping a safe distance between the data model of all the wire harness branches and the environmental data to obtain a layout data model A of the trunk and the branches of the wire harness;
step four: determining respective branch distances PxThe nearest fixed point region;
with PxThe space positions of all the points in the model are taken as the sphere centers, the maximum distance allowed by the fixed points in the design requirement is taken as the radius R, the sphere is made into a spherical surface, the spherical surface and the model A can generate more than or equal to N intersection points, and the coordinate set of the intersection points is Fm{F1,F2…Fn…Fm}；
Step five: each branch being at PxAnd FmIn the spherical space, determining a coordinate set H of a fixed point of the wire harnessx；
Step six: in a coordinate set HxTaking R as radius to continue to make a spherical surface as the center of the sphere, and intersecting the model A to obtain a coordinate set F(m+1)In HxTaking the circle center as the center of a circle and R as the radius in a spherical space, and continuously determining a second wire harness fixed point coordinate set H(X+1)；
Step seven: judging whether 2 adjacent spheres in the space are in a tangent or interference state at the same time, if the condition is not met, taking a coordinate set of an intersection point of the current sphere and the model A as a sphere center, and taking R as a radius to continue to be made into a spherical surface until all 2 adjacent spheres are in a tangent or mutual interference state;
step eight: all fixed point coordinate sets H determined at this timeGeneral assembly{Hx,H(x+1)…H(x+n)All the fixed points required by the wire harness are obtained;
step nine: merge HGeneral assemblyA fixed point of the middle repetition interval;
step ten: adding a corresponding wire harness positioning piece model at each point according to the environment data and the fixing mode of the wire harness to obtain a wire harness model B, wherein the model B meets the design requirement and keeps a safe distance with the environment data;
step eleven: according to an electric device assembly mode, setting assembly allowance on all branches as required to obtain a wire harness model C;
step twelve: and adding a wire harness outer protection material for the model C according to the assembling condition of the model C and the environmental data to obtain a final wire harness model.
In the technical scheme, the coordinate set P is usedxDetermining a main trunk L of the wiring harness according to the spatial position relation of each point, and specifically comprising the following steps:
determining PxObtaining n (n-2)/2 distance results according to the space distance of every two points in the space;
determining the spatial positions of the controller and the actuator at the farthest end according to the spatial positions of the controller and the actuator;
the spatial distance and the spatial position are compared, and the spatial path with the maximum distance is set as a harness trunk L.
According to the technical scheme, the wire harness data model A is evolved on the basis of a wire harness trunk and branch initial model, and the trends of the wire harness trunk and the (n-2) branches are adjusted according to the initial model and environmental data, so that the data model A is obtained.
In the technical scheme, the wire harness data model B is a wire harness model which is formed by determining the fixing mode of each section of wire and adding a corresponding wire harness positioning piece model at each point on the basis of the wire harness data model A.
According to the technical scheme, the wire harness model C is obtained by modifying and perfecting the wire harness model B, and the setting of assembly allowance is added to all branches on the basis of the model B during the model C.
Compared with the prior art, the invention has the beneficial effects that:
by using the three-dimensional model construction method, the wiring harness model can be ensured to be the shortest path scheme, the optimization of the layout scheme is realized, meanwhile, the selection of the fixed point can be ensured to be within the design requirement, the one-time design success rate and the design quality of the wiring harness model are improved, and the cost optimization of the wiring harness is also realized from the wiring harness layout path.
Drawings
The invention is further described with reference to the accompanying drawings in which:
FIG. 1 is a flow chart of a method for constructing a three-dimensional model of an automobile wire harness based on a shortest path model according to the present invention;
FIG. 2 is an exemplary illustration of spatial locations of electrical devices in environmental data;
FIG. 3 is a schematic diagram illustrating the measurement of the distance between each two points;
FIG. 4 is a schematic diagram of the trunk L of the determined wire harness;
FIG. 5 is a schematic diagram of an initial model for determining trunk and branch of a wire harness;
FIG. 6 is a diagram for determining the branch distances PxAn example graph of the nearest fixed point region;
FIG. 7 is an exemplary diagram illustrating the determination of the first wire harness fixing point of each branch;
FIG. 8 is an exemplary diagram illustrating the determination of a range of second wire harness attachment points for each branch;
FIG. 9 is an exemplary diagram illustrating the determination of a second wire harness fixing point for each branch;
FIG. 10 is a view showing the states of tangency or mutual interference of all adjacent spherical projections;
FIG. 11 is an exemplary diagram illustrating the determination of all the wire harness fixing points;
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the invention.
The invention is described in detail below with reference to the attached drawing figures:
the method flowchart is shown in fig. 1, and the method for arranging the wire harness in three dimensions is described in detail in conjunction with the method flowchart.
The method comprises the following steps: collecting and determining environmental data of a wire harness model to be arranged;
step two: determining the position P of all electrical devices in the area1、P2…PnTo obtain a coordinate set Px{P1,P2…PxAn example is shown in fig. 2;
step three: according to the coordinate set PxAnd determining the main trunk L of the wiring harness according to the spatial position relationship of each point. First, P is determinedxObtaining n (n-2)/2 distance results according to the space distance of every two points in the space; determining the spatial positions of the controller (or input source) and the most remote actuator according to the spatial positions of the controller and the actuator; comparing the above results, the spatial path with the maximum distance is taken as the harness trunk L, and examples of two-bit projection in the three-dimensional space are shown in fig. 3 and 4; "above" refers to measuring the distance of each two points within Px and the spatial position of the controller and the most distal actuator. The two pieces of information are compared, and the spatial path having the maximum distance is set as a skeleton L.
Step four: set of coordinates PxExcept for the start and stop points of the trunk L, drawing a perpendicular line from the position points of the other (n-2) electric devices to the trunk L to obtain (n-2) branches and (n-2) branch points on the trunk, and a two-bit projection example of the three-dimensional space is shown in fig. 5;
step five: adjusting the running direction of the wire harness trunk according to the environmental data and the design requirement, so that the data model of the wire harness trunk keeps a safe distance with the environmental data;
step six: adjusting the trend of (n-2) wire harness branches according to the environmental data and design requirements, wherein the data models of all the wire harness branches keep safe distance with the environmental data, and thus, a layout data model A of the trunk and the branches of the wire harness can be obtained;
step seven: determining respective branch distances PxThe nearest fixed point region. With PxThe spatial positions of all the points in the three-dimensional space are taken as the spherical centers, the maximum distance allowed by the fixed points in the design requirement is taken as the radius R, the spherical surface is made into a spherical surface, the spherical surface and the wire harness model A can generate more than or equal to N intersection points, and the coordinate set of the intersection points is Fm{F1,F2…Fn…FmAn example of a two-bit projection of three-dimensional space is shown in fig. 6 and 7;
step eight: each branch being at PxAnd FmIn the spherical space, determining coordinates of a fixed point of the wire harnessCollection Hx；
Step nine: in a coordinate set HxTaking R as radius to continue to be spherical surface as the center of sphere, intersecting with the wire harness model A to obtain a coordinate set F(m+1)In HxTaking the circle center as the center of a circle and R as the radius in a spherical space, and continuously determining a second wire harness fixed point coordinate set H(X+1)Examples of two-dimensional projections of three-dimensional space are shown in fig. 8 and 9;
step ten: judging whether 2 adjacent spheres in the space are in a tangent or interference state at the same time, if the condition is not met, taking a coordinate set of an intersection point of the current sphere and the wire harness model A as a sphere center, and taking R as a radius to continue to make a spherical surface until all the 2 adjacent spherical surfaces are in a tangent or mutual interference state, wherein a two-dimensional projection of a three-dimensional space is shown in fig. 10 and 11;
step eleven: all fixed point coordinate sets H determined at this timeGeneral (1){Hx,H(x+1)…H(x+n)All fixed points required by the wiring harness are obtained;
step twelve: merge HGeneral assemblyFixed points in the middle repetition interval, such as H31 and H32 in fig. 11, can be merged by adjusting H23 and H26;
step thirteen: adding a corresponding wire harness positioning piece model at each point according to the environment data and the fixing mode of the wire harness to obtain a wire harness model B, wherein the wire harness model B meets the design requirements and keeps a safe distance with the environment data;
fourteen steps: according to the assembling mode of the electric device, setting assembling allowance of all branches as required to obtain a wire harness model C;
step fifteen: according to the assembly condition of the wire harness model C and the environmental data, adding a wire harness external protection material for the wire harness model C to obtain a final wire harness model;
the initial model of the trunk and the branch of the wire harness is the precursor of the model A and is the most original model of the whole wire harness arrangement.
Referring to fig. 5, the wire harness data model a is evolved based on the "wire harness trunk and branch initial model", and the trends of the wire harness trunk and the (n-2) branches are adjusted according to the initial model and the environmental data, so as to obtain the data model a.
And the wire harness data model B is obtained by modifying the wire harness number model A. The wire harness model B is a wire harness model which is formed by determining the fixing mode of each section of wire on the basis of the wire harness model A and adding a corresponding wire harness positioning piece model at each point.
The wire harness model C is obtained by modifying and perfecting on the basis of the wire harness model B, and the setting of assembly allowance is added to all branches on the basis of the model B during the model C,
And the final wire harness model is obtained on the basis of the wire harness model C in a perfected manner, and based on the C model, the wire harness outer protection material is integrated to finally form the final wire harness model.
The modeling mode of the wire harness three-dimensional model adopts the following steps: completing the modes of trunk-branch-detail adjustment layer by layer; the determination mode of the fixed point on the wire harness adopts the following steps: the mode of each branch tail end-branch-trunk-detail adjustment is finished layer by layer; obtaining a modeling method of a wiring harness trunk by comparing the space distances of electric devices; obtaining a modeling method of a wire harness fixed point region by adopting a mode of intersecting a spherical surface and a wire harness model;
the traditional three-dimensional modeling mode of the wire harness is usually based on environmental data, and a unified modeling method is not provided; or the wiring is carried out according to the space positions of the controller and the actuator and then adjusted, so that the wiring harness path is lengthened, the cost of the wiring harness is increased and the like, and the space distance of the arrangement scheme is not the optimal design.
The modeling approach set forth in this invention: modeling is carried out layer by layer from a main body to branches, and meanwhile, a modeling mode of a space minimum distance is followed when each layer of modeling is carried out, so that the wiring harness model is ensured to be the optimal path design.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims. And those not described in detail in this specification are well within the skill of those in the art.
Claims (6)
1. A method for constructing a three-dimensional model of an automobile wire harness based on a shortest path model is characterized in that,
modeling layer by layer from a main line to branches, and simultaneously, modeling each layer according to a modeling mode of a space minimum distance, specifically comprising the following steps:
comparing the space distances of the electric devices to determine a trunk of the wiring harness; after the trunk is determined, determining branches of other electric devices;
adjusting the trend of the trunk and the branches according to the environmental data to obtain an initial data model;
determining a fixed point on the wire harness, obtaining a wire harness fixed point region by adopting a mode that a spherical surface is intersected with a wire harness model, and finally determining the positions of all the fixed points on the wire harness to obtain a data model A;
a fixed mode of a fixed point is added on the basis of the data model A to obtain a data model B;
on the basis of the data model B, increasing the assembly allowance design according to the assembly requirement to obtain a data model C;
adding an external protection design according to actual requirements on the basis of the data model C to obtain a final data model of the wire harness;
the method for obtaining the final data model of the wire harness specifically comprises the following steps:
the method comprises the following steps: set of coordinates PxExcept the starting point and the ending point of the trunk L, drawing a perpendicular line from the position points of other (n-2) electric devices to the trunk L to obtain (n-2) branches and (n-2) branch points on the trunk;
step two: adjusting the direction of the wire harness trunk according to the environmental data and the design requirement, so that the data model of the wire harness trunk keeps a safe distance with the environmental data;
step three: adjusting the trends of (n-2) wire harness branches according to the environmental data and the design requirements, and keeping the safe distance between the data models of all the wire harness branches and the environmental data to obtain a wiring harness trunk and branch arrangement data model A;
step four: determining respective branch distances PxThe nearest fixed point region;
with PxThe spatial positions of all the points in the model are taken as the sphere centers, the maximum distance allowed by the fixed points in the design requirement is taken as the radius R, the sphere is made into a spherical surface, the spherical surface and the model A can generate more than or equal to N intersection points, and the coordinate set of the intersection points is Fm{F1,F2…Fn…Fm}；
Step five: each branch being at PxAnd FmIn the spherical space, determining a coordinate set H of a fixed point of the wire harnessx；
Step six: in a coordinate set HxTaking R as radius to continue to make a spherical surface as the center of the sphere, and intersecting the model A to obtain a coordinate set F(m+1)In HxIn a spherical space with the circle center as R as the radius, continuously determining a second wire harness fixed point coordinate set H(X+1)；
Step seven: judging whether 2 adjacent spheres in the space are in a tangent or interference state at the same time, if the condition is not met, taking a coordinate set of an intersection point of the current sphere and the model A as a sphere center, and taking R as a radius to continue to be made into a spherical surface until all 2 adjacent spheres are in a tangent or mutual interference state;
step eight: all fixed point coordinate sets H determined at this timeGeneral assembly{Hx,H(x+1)…H(x+n)All the fixed points required by the wire harness are obtained;
step nine: merge HGeneral (1)A fixed point of the middle repetition interval;
step ten: adding a corresponding wire harness positioning piece model at each point according to the environment data and the fixing mode of the wire harness to obtain a wire harness model B, wherein the model B meets the design requirement and keeps a safe distance with the environment data;
step eleven: according to an electric device assembly mode, setting assembly allowance on all branches as required to obtain a wire harness model C;
step twelve: and adding a wire harness outer protection material for the model C according to the assembling condition of the model C and the environmental data to obtain a final wire harness model.
2. The shortest path model-based automobile wire harness three-dimensional model construction method according to claim 1, characterized in that:
the method for comparing the space distances of the electric devices to obtain the trunk of the wiring harness comprises the following steps:
the method comprises the following steps: collecting and determining environmental data of a wire harness model to be arranged;
step two: determining the position P of all electrical devices in the area where the wiring harness model needs to be laid out1、P2…PnTo obtain a set of coordinates Px{P1,P2…Px}；
Step three: according to the coordinate set PxAnd determining the main trunk L of the wiring harness according to the spatial position relationship of each point.
3. The shortest path model-based automobile wire harness three-dimensional model construction method according to claim 2, characterized in that:
the set of coordinates PxDetermining a main trunk L of the wiring harness according to the spatial position relation of each point, and specifically comprising the following steps:
determining PxObtaining n (n-2)/2 distance results according to the space distance of every two points in the space;
determining the spatial positions of the controller and the farthest end actuator according to the spatial positions of the controller and the actuator;
the spatial distance and the spatial position are compared, and the spatial path with the maximum distance is set as a harness trunk L.
4. The shortest path model-based automobile wire harness three-dimensional model construction method according to claim 2, characterized in that:
and the wire harness data model A adjusts the trend of the wire harness trunk and the trend of the (n-2) branches according to the initial model and the environmental data, so that the data model A is obtained.
5. The shortest path model-based automobile wire harness three-dimensional model construction method according to claim 2, characterized in that: the wire harness data model B is a wire harness model which is formed by determining the fixing mode of each section of wire and adding a corresponding wire harness positioning piece model at each point on the basis of the wire harness data model A.
6. The shortest path model-based automobile wire harness three-dimensional model construction method according to claim 2, characterized in that: and the wire harness model C is set by adding assembly allowance to all branches based on the wire harness model B.
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