Method and device for determining harness diameter of harness assembly, and vehicle

Abstract

The application relates to a harness diameter determination method and device of a harness assembly and a vehicle, and relates to the technical field of vehicle harnesses. The method comprises the following steps: determining harness configuration information of a target harness assembly; wherein the target harness assembly comprises a plurality of harnesses; each harness in the plurality of harnesses comprises a wire of one specification; the harness configuration information is used for representing the theoretical cross-sectional areas of the plurality of harnesses respectively; based on the harness configuration information and a target fitting relationship, the diameter of the target harness assembly is determined; wherein the target fitting relationship is used for representing the corresponding relationship between the theoretical cross-sectional areas of the plurality of harnesses of the target harness assembly and the diameter of the target harness assembly after the interaction between the harnesses is taken into account under the arrangement mode of the target harness assembly, so that the calculation accuracy of the diameter of the target harness assembly is improved, and the accuracy of the design of the target harness assembly is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle wiring harness technology, specifically to a method, apparatus, and vehicle for determining the diameter of a wiring harness assembly. Background Technology

[0002] In vehicle electrical systems, the vehicle wiring harness serves as a crucial carrier for achieving electrical functional connections throughout the vehicle. Its design accuracy directly impacts the vehicle's reliability, safety, and manufacturing costs. During the three-dimensional (3D) digital model design of the wiring harness, the harness diameter is a core parameter that plays a decisive role in wiring space planning, assembly gap allowance, selection of protective components such as corrugated pipes and sheaths, and the rationality of the overall vehicle layout. Therefore, accurately predicting the harness diameter is a prerequisite for ensuring high-precision digital design and avoiding subsequent assembly interference and space waste.

[0003] Currently, the method for determining the wire harness diameter is to first obtain the connector pin information of the wire harness, determine the maximum outer diameter of each wire based on this pin information, and use this as the basis to calculate the initial wire harness outer diameter. Subsequently, the final wire harness outer diameter is further calculated by combining the protective material and protection method used for the outermost layer of the wire harness.

[0004] However, this method relies on empirical formulas to calculate the initial bundle diameter, and then adjusts the initial bundle diameter according to the harness wrapping method and harness manufacturing process. It does not take into account the dynamic changes in the cross-sectional fill rate of the wires due to stranding and compression during the actual bundling process, resulting in a large deviation between the calculated bundle diameter and the actual bundle diameter, which makes it difficult to meet the high-precision requirements of modern automotive electrical systems for harness design. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a method, apparatus and vehicle for determining the diameter of a wire harness assembly, which aims to solve the problem of low accuracy in wire harness diameter estimation in the prior art.

[0006] In a first aspect, embodiments of this application provide a method for determining the diameter of a wire harness assembly. The method includes: determining wire harness configuration information of a target wire harness assembly; wherein the target wire harness assembly includes multiple wire harnesses; each of the multiple wire harnesses includes a conductor of a certain specification; the wire harness configuration information is used to characterize the theoretical cross-sectional area of ​​each of the multiple wire harnesses; and determining the diameter of the target wire harness assembly based on the wire harness configuration information and a target fitting relationship; wherein the target fitting relationship is used to characterize the correspondence between the theoretical cross-sectional area of ​​each of the multiple wire harnesses of the wire harness assembly and the diameter of the wire harness assembly after incorporating the interaction between the wire harnesses in the wire harness arrangement corresponding to the target wire harness assembly.

[0007] Based on the above technical solutions, traditional wire harness diameter calculations simply superimpose the theoretical cross-sectional area of ​​the conductors, without considering the interactive effects of wire harness compression and gap filling during actual wiring arrangement. This easily leads to significant deviations between the calculated results and the actual diameter. This application constructs a target fitting relationship that incorporates the interactive effects between wire harnesses, enabling the determination of the wire harness diameter to consider the interactive effects caused by contact, compression, and gap filling among wire harnesses in the actual wiring arrangement. This significantly improves the accuracy of diameter calculation and avoids design problems caused by diameter estimation errors. Furthermore, this application can quickly calculate the diameter of the wire harness assembly through a preset target fitting relationship, without relying on complex 3D modeling simulations or extensive experimental testing. While ensuring calculation accuracy, it significantly simplifies the calculation process, improves design efficiency, and effectively shortens the overall R&D cycle of the wire harness assembly, reducing R&D costs.

[0008] In one possible approach, the process of determining the target fitting relationship includes: identifying at least one group of wire harnesses with wire harness interactions in the wire harness assembly under the wire harness arrangement; establishing wire harness interaction terms for each of the at least one group of wire harnesses; wherein the wire harness interaction terms are jointly represented by the theoretical cross-sectional areas of each wire harness included in the wire harness group; establishing an initial fitting relationship based on the wire harness interaction terms, the wire harness terms of each of the multiple wire harnesses in the wire harness assembly, and the bundle diameter term of the wire harness assembly; wherein the wire harness terms are represented by the theoretical cross-sectional areas of the wire harnesses; and determining the target fitting relationship using the fitting samples corresponding to the wire harness assembly and the initial fitting relationship.

[0009] Based on the above technical solution, this application identifies wire harness groups with wire harness interactions and constructs exclusive wire harness interaction terms based on the theoretical cross-sectional area of ​​each group of wire harnesses. This quantifies the actual physical effects of intertwining, entanglement, compression, nesting, and gap coupling between wire harnesses, overcoming the shortcomings of traditional fitting methods that only consider the size of a single wire harness and ignore the interactions between wire harnesses. This makes the constructed initial fitting relationship more closely match the actual arrangement of the wire harness assembly, laying the foundation for obtaining accurate and reliable target fitting relationships in the future. Furthermore, based on the initial fitting relationship, data fitting and solving are performed using actual fitting samples, which can optimize and calibrate the model parameters, eliminate the deviation between theoretical modeling and actual engineering applications, and ensure that the final determined target fitting relationship can accurately reflect the correspondence between the cross-sectional area and diameter of the wire harness under real working conditions, meeting the high-precision requirements of wire harness design.

[0010] In one possible approach, the harness interaction term is represented by the product of the theoretical cross-sectional areas of the individual harnesses included in the harness group.

[0011] Based on the above technical solution, this application constructs the wire harness interaction term by multiplying the theoretical cross-sectional areas of each wire harness in the wire harness group. This can intuitively reflect the coupling strength between wire harnesses caused by size matching, such as compression, bonding, and gap filling. Compared with simple summation or empirical coefficients, it can more realistically characterize the influence of multiple wire harnesses on the overall bundle diameter, and make the quantification of the interaction between wire harnesses have clear physical meaning.

[0012] In one possible approach, the theoretical cross-sectional area of ​​the harness is expressed in terms of the cross-sectional area of ​​a single conductor in the harness and the number of conductors.

[0013] In one possible approach, an initial fitting relationship is established based on the harness interaction term, the harness terms of each individual harness in the harness assembly, and the harness diameter term of the harness assembly. This includes: constructing a multivariate polynomial nonlinear fitting relationship using the harness interaction term and the harness term as independent variables and the harness diameter term as the dependent variable, to fit the coefficients of the constant term, the harness interaction term, and the harness term; and determining the multivariate polynomial nonlinear fitting relationship as the initial fitting relationship.

[0014] Based on the above technical solution, this application uses the wire harness term to characterize the independent influence of the theoretical cross-sectional area of ​​a single wire harness on the bundle diameter, and the wire harness interaction term to characterize the joint influence of the coupling effect between multiple wire harnesses on the bundle diameter. By assigning corresponding coefficients in the form of multivariate polynomials, the contribution of single factors and interaction factors can be clearly distinguished and quantified, avoiding confusion between different influencing factors, ensuring that the fitting model is logically rigorous and closely matches the actual physical form of wire harnesses and the wire harnesses.

[0015] One possible approach is that the wiring harness arrangement includes at least one of twisting, winding, and extrusion.

[0016] In one possible approach, the target fitting relationship is determined using the fitted samples and initial fitting relationships corresponding to the harness assembly, including: constructing a fitting loss function; wherein the fitting loss function is used to characterize the fitting deviation between the fitted beam diameter and the actual beam diameter of the fitted samples; and determining the target fitting relationship based on the fitting loss function, the fitted samples, and the initial fitting relationship.

[0017] Based on the above technical solution, this application constructs a fitting loss function to quantify the deviation between the fitted bundle diameter and the actual bundle diameter, intuitively reflecting the fitting accuracy of the initial fitting relationship. This avoids relying solely on subjective judgment to determine the fitting effect, ensuring that the final target fitting relationship highly matches the actual wire harness state and significantly improving the accuracy of the bundle diameter calculation results. Subsequently, using the fitting loss function as the optimization objective, and combining the fitting samples, the fitting coefficients in the initial fitting relationship are iteratively optimized. This allows the model parameters to continuously converge towards reducing the fitting deviation, effectively reducing the interference of sample noise and outlier data on the fitting results, improving the stability and robustness of the target fitting relationship, and adapting to the calculation of the bundle diameter of wire harness assemblies under different working conditions.

[0018] In one possible approach, the number of independent variables in the target fitted relationship is less than a preset threshold; the preset threshold is determined based on the total number of fitted samples.

[0019] Based on the above technical solution, this application determines the number of independent variables in the target fitting relationship based on the total number of fitted samples, which can avoid the problem of overfitting.

[0020] In one possible approach, the process of determining the aforementioned target fitting relationship further includes: identifying a key wire harness group among at least one wire harness group in the wire harness assembly where wire harness interactions exist under the wire harness arrangement; wherein, the key wire harness group is a wire harness group whose influence on the wire harness diameter of the wire harness assembly is greater than a preset influence threshold; establishing wire harness interaction terms for the key wire harness group; wherein, the wire harness interaction terms are jointly represented by the theoretical cross-sectional areas of each wire harness included in the key wire harness group; and establishing an initial fitting relationship based on the wire harness interaction terms, the individual wire harness terms of multiple wire harnesses in the wire harness assembly, and the wire harness diameter term of the wire harness assembly; wherein, the wire harness terms are represented by the theoretical cross-sectional areas of the wire harnesses. The target fitting relationship is determined by using the fitted samples and initial fitting relationships corresponding to the wiring harness assembly.

[0021] Based on the above technical solution, this application obtains key wire harness groups that have a significant impact on the bundle diameter by screening through a preset influence threshold. This can eliminate interference from wire harness groups with weak or negligible interactions, avoid invalid calculations and error interference introduced by redundant interaction relationships, and enable the constructed initial fitting relationship to accurately focus on the interaction factors that play a dominant role in the bundle diameter of the wire harness assembly, thereby greatly improving the rationality of the model and the accuracy of the bundle diameter calculation.

[0022] In one possible approach, the process of determining the target fitting relationship further includes: when there are no wire harness groups with wire harness interaction in the wire harness assembly under the determined wire harness arrangement, establishing an initial fitting relationship based on the wire harness terms of each of the multiple wire harnesses in the wire harness assembly and the wire harness diameter term of the wire harness assembly; wherein the wire harness term is represented by the theoretical cross-sectional area of ​​the wire harness; and determining the target fitting relationship using the fitting samples corresponding to the wire harness assembly and the initial fitting relationship.

[0023] Based on the above technical solution, in scenarios where there is no influence from wire bundle interaction, this application can construct an initial fitting relationship without constructing wire bundle interaction terms, based only on wire bundle terms and bundle diameter terms that represent the configuration information of a single wire bundle itself. This effectively reduces model parameters and computational dimensions, avoids introducing invalid parameters that lead to model redundancy, and significantly reduces the complexity of constructing and solving the fitting relationship.

[0024] Secondly, embodiments of this application provide a harness diameter determination device for a wire harness assembly, the device comprising: a first determination unit and a second determination unit.

[0025] The first determining unit is used to determine the wiring harness configuration information of the target wiring harness assembly; wherein, the target wiring harness assembly includes multiple wiring harnesses; each of the multiple wiring harnesses includes a conductor of a certain specification; the wiring harness configuration information is used to characterize the theoretical cross-sectional area of ​​each of the multiple wiring harnesses.

[0026] The second determining unit is used to determine the bundle diameter of the target wire harness assembly based on the wire harness configuration information and the target fitting relationship; wherein, the target fitting relationship is used to characterize the correspondence between the theoretical cross-sectional area of ​​each of the multiple wire harnesses of the wire harness assembly and the bundle diameter of the wire harness assembly after incorporating the interaction between wire harnesses under the wire harness arrangement corresponding to the target wire harness assembly.

[0027] In one possible approach, the second determining unit includes: a first determining subunit, a first establishing subunit, a second establishing subunit, and a second determining subunit. The first determining subunit is used to determine at least one group of wire harnesses in the wire harness assembly with wire harness interactions under the wire harness arrangement. The first establishing subunit is used to establish wire harness interaction terms for each of the at least one group of wire harnesses; wherein the wire harness interaction terms are collectively represented by the theoretical cross-sectional areas of the individual wire harnesses included in the group. The second establishing subunit is used to establish an initial fitting relationship based on the wire harness interaction terms, the individual wire harness terms of the multiple wire harnesses in the wire harness assembly, and the bundle diameter term of the wire harness assembly; wherein the wire harness terms are represented by the theoretical cross-sectional areas of the wire harnesses. The second determining subunit is used to determine a target fitting relationship using the fitting samples corresponding to the wire harness assembly and the initial fitting relationship.

[0028] In one possible approach, the second subunit is specifically used to construct a multivariate polynomial nonlinear fitting relation for fitting constant terms, the coefficients of the wire harness interaction term and the wire harness term as independent variables and the wire harness diameter term as dependent variable; the multivariate polynomial nonlinear fitting relation is then determined as the initial fitting relation.

[0029] In one possible approach, the second determining subunit is specifically used to construct the fitting loss function; wherein the fitting loss function is used to characterize the fitting deviation between the fitted beam diameter and the actual beam diameter of the fitted sample; and the target fitting relationship is determined based on the fitting loss function, the fitted sample, and the initial fitting relationship.

[0030] In one possible approach, the number of terms in the target fitted relationship is less than a preset term threshold. The second determining subunit is also used to determine the preset term threshold based on the total number of fitted samples.

[0031] In one possible approach, the first determining subunit is further configured to determine a key wire harness group among at least one wire harness group in the wire harness assembly where wire harness interactions exist under the wire harness arrangement; wherein, the key wire harness group is a wire harness group whose influence on the wire harness diameter of the wire harness assembly is greater than a preset influence threshold. The first establishing subunit is further configured to establish wire harness interaction terms for the key wire harness group; wherein, the wire harness interaction terms are collectively represented by the theoretical cross-sectional areas of each wire harness included in the key wire harness group. The second establishing subunit is further configured to establish an initial fitting relationship based on the wire harness interaction terms, the individual wire harness terms of multiple wire harnesses in the wire harness assembly, and the wire harness diameter term of the wire harness assembly; wherein, the wire harness terms are represented by the theoretical cross-sectional areas of the wire harnesses. The second determining subunit is further configured to determine a target fitting relationship using the fitting samples corresponding to the wire harness assembly and the initial fitting relationship.

[0032] In one possible approach, the first sub-unit is further used to establish an initial fitting relationship based on the individual wire harness terms of multiple wire harnesses in the wire harness assembly and the bundle diameter term of the wire harness assembly, when there are no wire harness interaction groups in the wire harness assembly under a determined wire harness arrangement; wherein the wire harness term is represented by the theoretical cross-sectional area of ​​the wire harness. The second sub-unit is further used to determine the target fitting relationship using the fitting samples corresponding to the wire harness assembly and the initial fitting relationship.

[0033] Thirdly, embodiments of this application provide a vehicle equipped with a harness diameter determination device for the wiring harness assembly described in the second aspect.

[0034] Fourthly, embodiments of this application provide an electronic device, including: a processor; and a memory for storing processor-executable instructions. The processor is configured to execute instructions to implement the method for determining the bundle diameter of a wire harness assembly as described in the first aspect and any possible implementation thereof.

[0035] Fifthly, this application provides a computer-readable storage medium that, when the instructions in the computer-readable storage medium are executed by a processor of an electronic device, enables the electronic device to perform the harness diameter determination method for the harness assembly described in the first aspect and any possible implementation thereof.

[0036] Sixthly, embodiments of this application provide a computer program product, which includes computer instructions that, when executed on an electronic device, cause the electronic device to perform the harness diameter determination method of the wiring harness assembly described in the first aspect and any possible implementation thereof.

[0037] It should be noted that the technical effects of any of the implementation methods in aspects two through six can be found in the technical effects of the corresponding implementation methods in aspect one, and will not be repeated here.

[0038] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application will be described below.

[0040] Figure 1 A schematic diagram of a wire harness assembly diameter determination system provided in this application embodiment; Figure 2 A schematic diagram of another wire harness assembly diameter determination system provided in this application embodiment; Figure 3 A flowchart illustrating a method for determining the diameter of a wire harness assembly, provided in an embodiment of this application; Figure 4 A flowchart illustrating another method for determining the diameter of a wire harness assembly provided in an embodiment of this application; Figure 5 A comparison curve between the fitted beam diameter and the actual beam diameter of a wire harness assembly sample provided in this application embodiment; Figure 6 A schematic diagram of a wire harness assembly diameter determination device provided in an embodiment of this application; Figure 7 This is a block diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0041] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0042] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0043] In the embodiments of this application, the words "exemplarily," "for example," or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily," "for example," or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the words "exemplarily," "for example," or "for instance" is intended to present the relevant concepts in a specific manner.

[0044] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0045] The method for determining the harness diameter of the wiring harness assembly provided in this application embodiment can be applied to vehicles. Vehicles can also be referred to as vehicles, mobile carriers, electric vehicles (EVs), hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), fuel cell vehicles (FCVs), autonomous vehicles, intelligent and connected vehicles (ICVs), driverless vehicles, etc.

[0046] In this application, the vehicle can be a sedan, a sport utility vehicle (SUV), a truck, an electric vehicle, a motorcycle, a tricycle, a special vehicle (such as an ambulance, fire truck, police car, etc.), a driverless taxi, an intelligent connected bus, an autonomous logistics vehicle, an electric truck, etc. Furthermore, this method is also applicable to various special-purpose vehicles, such as agricultural vehicles, mining vehicles, forestry vehicles, airport vehicles, and port vehicles. This application does not impose specific limitations in this regard.

[0047] like Figure 1 As shown in the figure, a wire harness assembly diameter determination system provided in this application embodiment includes: a server 101 and a wire harness assembly 102.

[0048] The server 101 can be a high-performance server providing various services on the internet, a standalone physical server, a server cluster consisting of multiple physical servers, or at least one of the following cloud servers providing basic cloud computing services: cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, content delivery networks, and big data or artificial intelligence platforms. This embodiment of the application does not limit the specific services provided. Of course, the server can also include other functions to provide more comprehensive and diversified services.

[0049] The wiring harness assembly 102 may include multiple wiring harnesses, and each wiring harness may include a conductor of a certain specification, that is, at least one conductor of the same specification is divided into a sub-wiring harness, and the conductors in each sub-wiring harness are consistent in core electrical and physical parameters.

[0050] In this embodiment, the wiring harness assembly 102 can be applied to the electrical system wiring of vehicles, trains, airplanes, and other transportation vehicles. The wiring harness assembly may include, but is not limited to: engine wiring harness, instrument panel wiring harness, body wiring harness, chassis wiring harness, air conditioning wiring harness, and airbag wiring harness; or, the wiring harness assembly may include: low-voltage wiring harness and high-voltage wiring harness, which is not limited in this application.

[0051] For example, such as Figure 2As shown, the wiring harness assembly 102 can be deployed in a vehicle. A vehicle can also be referred to as a vehicle, mobile carrier, electric vehicle (EV), hybrid electric vehicle (HEV), plug-in hybrid electric vehicle (PHEV), fuel cell vehicle (FCV), autonomous vehicle, intelligent and connected vehicle (ICV), driverless vehicle, etc.

[0052] The vehicles can be sedans, sport utility vehicles (SUVs), trucks, electric vehicles, motorcycles, tricycles, special vehicles (such as ambulances, fire trucks, police cars, etc.), driverless taxis, intelligent connected buses, autonomous logistics vehicles, electric trucks, etc. Furthermore, this method is also applicable to various special-purpose vehicles, such as agricultural vehicles, mining vehicles, forestry vehicles, airport vehicles, and port vehicles. This application does not impose specific limitations in this regard.

[0053] In some embodiments, server 101 has a built-in target fitting relationship, which characterizes the correspondence between the theoretical cross-sectional area of ​​each of the multiple wires in the wire harness assembly and the diameter of the wire harness assembly after incorporating the interaction between wire harnesses, under the wire harness arrangement corresponding to the target wire harness assembly. Based on this, server 101 can determine the wire harness configuration information of the target wire harness assembly, and then determine the diameter of the target wire harness assembly based on the wire harness configuration information and the target fitting relationship.

[0054] For ease of understanding, the method for determining the bundle diameter of the wire harness assembly provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0055] like Figure 3 As shown in the embodiment of this application, a method for determining the diameter of a wire harness assembly includes: S301. Determine the wiring harness configuration information of the target wiring harness assembly.

[0056] The target wiring harness assembly includes multiple wiring harnesses, and each wiring harness includes a conductor of a certain specification. That is, at least one conductor of the same specification is divided into a sub-wiring harness, and the conductors in each sub-wiring harness are consistent in terms of parameters such as material properties, cross-sectional area, diameter and insulation layer.

[0057] The harness configuration information is used to characterize the theoretical cross-sectional area of ​​each of the multiple harnesses. The harness configuration information may include: the theoretical cross-sectional area (or nominal cross-sectional area) of the conductors in each harness and the number of conductors. For example, harness a contains 10 conductors with a diameter of 0.35 square millimeters; 0.35 square millimeters means that the cross-sectional area of ​​the conductor is 0.35 square millimeters.

[0058] Optionally, the wiring harness assembly may include, but is not limited to: engine wiring harness, instrument panel wiring harness, body wiring harness, chassis wiring harness, air conditioning wiring harness and airbag wiring harness, which are not limited in this application.

[0059] In some embodiments, the server can determine the wire harnesses contained in the target wire harness assembly and the number and theoretical cross-sectional area of ​​the wires contained in each wire harness based on the part number or project number of the target wire harness assembly (or the wire harness assembly under test).

[0060] For example, the server can determine, based on the part number of the target wiring harness assembly A, that the target wiring harness assembly A includes wiring harness a, wiring harness b, wiring harness c, wire d, and wire e. Wiring harness a contains 10 wires with a diameter of 0.35 square millimeters, wiring harness b contains 13 wires with a diameter of 0.5 square millimeters, wiring harness c contains 4 wires with a diameter of 0.75 square millimeters, wire d contains 5 wires with a diameter of 1.5 square millimeters, and wire e contains 2 wires with a diameter of 2.5 square millimeters.

[0061] S302. Based on the harness configuration information and the target fitting relationship, determine the diameter of the target harness assembly.

[0062] Among them, the target fitting relationship is used to characterize the correspondence between the theoretical cross-sectional area of ​​each of the multiple wires in the wire harness assembly and the diameter of the wire harness assembly after incorporating the interaction between the wire harnesses under the wire harness arrangement corresponding to the target wire harness assembly.

[0063] The target fitting relationship can be obtained through finite element analysis, theoretical modeling, historical data regression or physical experiment calibration to ensure that it reflects the comprehensive effects of actual wire harness twisting, winding, compression, voids and material deformation.

[0064] In this embodiment, the wiring harness arrangement directly affects the gaps, filling, and interactions between the wiring harnesses. Different wiring harness arrangements result in different fitting relationships for the wiring harness assembly. The wiring harness arrangement includes at least one of twisting, winding, and extrusion; alternatively, it may include one of circular bundles, rectangular bundles, layered arrangements, or custom geometric arrangements.

[0065] In some embodiments, the server has multiple built-in fitting relationships. Based on this, the server can determine the target fitting relationship corresponding to the target wire harness assembly from the multiple fitting relationships according to the wire harness arrangement of the target wire harness assembly. Then, the number of wires with the same cross-sectional area contained in each wire harness in the wire harness assembly is input into the target fitting relationship, and the bundle diameter of the target wire harness assembly is calculated.

[0066] For example, the target fitting relationship corresponding to the target harness assembly A satisfies the following formula 1.

[0067] (Formula 1) in, Indicates the bundle diameter of the wire harness assembly. This indicates the number of 0.35 square millimeter wires. Indicates the number of 0.5 square millimeter wires. Indicates the number of 0.75 square millimeter wires. Indicates the number of 1.5 square millimeter wires. This indicates the number of 2.5 square millimeter wires. This represents the interaction effect between wire harnesses, specifically the interaction effect between 0.35 square millimeter wire and 0.5 square millimeter wire; , , , , , and The coefficient of fit is the optimal coefficient of fit. The method for determining the optimal coefficient of fit can be referred to in the following embodiments, and will not be repeated here.

[0068] Combining Formula 1 above, if the target wiring harness assembly A includes harness a, harness b, harness c, wire d, and wire e, where harness a contains 10 wires with a diameter of 0.35 square millimeters, harness b contains 13 wires with a diameter of 0.5 square millimeters, harness c contains 4 wires with a diameter of 0.75 square millimeters, wire d contains 5 wires with a diameter of 1.5 square millimeters, and wire e contains 2 wires with a diameter of 2.5 square millimeters, the server can substitute 10 into the formula. Substitute 13 into Substitute 4 into Substitute 5 into And substituting 2 Substitute 10*13 into The bundle diameter of the target wire harness assembly A is obtained. .

[0069] Based on the above technical solution, this application constructs a target fitting relationship that incorporates the interactive influence between wire harnesses. This allows the determination of the wire harness diameter to consider the interactive effects caused by factors such as contact, compression, and gap filling between wire harnesses under actual arrangement, significantly improving the accuracy of the diameter calculation and avoiding design problems caused by diameter estimation errors. Furthermore, this application can quickly calculate the diameter of the wire harness assembly through a preset target fitting relationship, without relying on complex 3D modeling simulations or extensive experimental testing. While ensuring calculation accuracy, this significantly simplifies the calculation process, improves design efficiency, and effectively shortens the overall R&D cycle of the wire harness assembly, reducing R&D costs.

[0070] In an optional implementation, the method for determining the bundle diameter of the wire harness assembly provided in this application further includes: determining a target fitting relationship. For example... Figure 4 As shown, the process of determining the target fitting relationship includes: S401. Determine that there is at least one wire harness group with wire harness interaction in the wire harness assembly under the wire harness arrangement method.

[0071] In this embodiment, when multiple wire harnesses are arranged tightly in a wire harness assembly, they are not independent of each other but interact with one another. For example, there is physical compression and deformation between the wire harnesses in the assembly: due to radial binding forces during bundling, fixing, or installation, the outer insulation layers of the wire harnesses are compressed against each other. This compression causes a change in the geometric shape of the theoretical circular cross-section of the wire harness, for example, tending towards a polygonal arrangement. Simultaneously, the non-tight fit between the wire harnesses caused by deformation occupies additional filling gaps. These factors collectively affect the bundle diameter of the wire harness assembly.

[0072] In some embodiments, the server can determine, according to a preset partitioning rule, at least one group of wire harnesses in the wire harness assembly under the wire harness arrangement method that has wire harness interaction.

[0073] In this embodiment of the application, the preset division rules may include: 1-1. Determine the wire harness group according to the spatial correlation of the wire harnesses. That is, the wire harness group in the wire harness assembly includes at least two wire harnesses that are spatially correlated. At least two wire harnesses that are in direct contact with each other or generate indirect pressure through fasteners can be classified as a wire harness group.

[0074] For example, if harness a and harness b are in direct contact and harness c and harness d are in direct contact in a harness assembly, then harness a and harness b belong to the same harness group.

[0075] 1-2. Determine the wire harness group according to the number of wires in the wire harness. Specifically, at least N wire harnesses with the highest percentage of wires can be grouped into the same wire harness group, where N is a positive integer greater than 2; or, at least two wire harnesses with a number of wires greater than or equal to a preset threshold can be grouped into the same wire harness group.

[0076] Optionally, the preset quantity threshold can be determined based on the total number of wires contained in each wire harness in the wiring harness assembly. For example, if the total number of wires in the wiring harness assembly is 30, the preset quantity threshold can be 10 or 15, and this application does not limit it in this regard.

[0077] For example, taking a wire harness assembly containing a total of 30 wires and N being 2, if wire harness a contains 10 wires with a diameter of 0.35 square millimeters, wire harness b contains 13 wires with a diameter of 0.5 square millimeters, wire harness c contains 4 wires with a diameter of 0.75 square millimeters, wire harness d contains 5 wires with a diameter of 1.5 square millimeters, and wire harness e contains 2 wires with a diameter of 2.5 square millimeters, then wire harness a and wire harness b can be classified as the same wire harness group.

[0078] For example, taking a wire harness assembly containing a total of 30 wires in each harness and a preset quantity threshold of 10 as an example, if harness a contains 20 wires with a diameter of 0.35 square millimeters, harness b contains 10 wires with a diameter of 0.5 square millimeters, harness c contains 1 wire with a diameter of 0.75 square millimeters, wire d contains 1 wire with a diameter of 1.5 square millimeters, and wire e contains 1 wire with a diameter of 2.5 square millimeters, then harness a and harness b can be classified as the same harness group.

[0079] S402. Establish at least one harness interaction item for each harness group.

[0080] The harness interaction term is represented by the combined theoretical cross-sectional area of ​​each harness within the harness group. Specifically, the harness interaction term is represented by the product of the theoretical cross-sectional areas of each harness within the harness group. The theoretical cross-sectional area of ​​a harness is represented by the cross-sectional area of ​​a single conductor and the number of conductors in the harness.

[0081] In some embodiments, for a target harness group in at least one harness group, the server can determine the theoretical cross-sectional area of ​​each harness based on the individual harnesses included in the target harness group and the cross-sectional area and number of individual wires in each harness, and then establish the harness interaction terms for each target harness group by multiplying the theoretical cross-sectional areas of each harness.

[0082] For example, a wire harness assembly includes a wire harness a and a wire harness b. Wire harness a contains 10 wires with a diameter of 0.35 square millimeters, and wire harness b contains 13 wires with a diameter of 0.5 square millimeters. The wire harness interaction item of the wire harness group can be represented by 10*13.

[0083] For example, the wiring harness assembly includes wiring harness group 1 and wiring harness group 2. Wiring harness group 1 includes wiring harness a and wiring harness b. Wiring harness a contains A1 wires with a diameter of 0.35 square millimeters, and wiring harness b contains B1 wires with a diameter of 0.5 square millimeters. The wiring harness interaction item of wiring harness group 1 can be represented by A1*B1. Wiring harness group 2 includes wiring harness c and wiring harness d. Wiring harness c contains C1 wires with a diameter of 0.75 square millimeters, and wiring harness d contains D1 wires with a diameter of 1.5 square millimeters. The wiring harness interaction item of wiring harness group 2 can be represented by 7*5.

[0084] S403. Based on the wire harness interaction term, the individual wire harness terms of multiple wire harnesses in the wire harness assembly, and the wire harness diameter term of the wire harness assembly, establish an initial fitting relationship.

[0085] The harness term is represented by the theoretical cross-sectional area of ​​the harness, and refers to the characteristic quantity used to describe the contribution of a single harness to the harness diameter. The theoretical cross-sectional area of ​​the harness is represented by the cross-sectional area of ​​a single conductor in the harness and the number of conductors.

[0086] In some embodiments, the server can construct a multivariate polynomial nonlinear fitting relation using the harness interaction term and the harness term as independent variables, and the harness diameter term as the dependent variable, to fit the coefficients of the constant term, the harness interaction term, and the harness term. The server can then determine this multivariate polynomial nonlinear fitting relation as the initial fitting relation.

[0087] For example, a wire harness assembly may include five wire harnesses: harness a includes a 0.35 sq mm wire, harness b includes a 0.5 sq mm wire, harness c includes a 0.75 sq mm wire, harness d includes a 1.5 sq mm wire, and harness e includes a 2.5 sq mm wire. Furthermore, the wire harness assembly may include a harness group comprising harness a and harness b. Based on this, the initial fitting relationship satisfies the following Equation 2.

[0088] (Formula 2) in, This indicates the bundle diameter (i.e., the bundle diameter term) of the wire harness assembly, where, Indicates the bundle diameter of the wire harness assembly. This indicates the number of 0.35 square millimeter wires. Indicates the number of 0.5 square millimeter wires. Indicates the number of 0.75 square millimeter wires. Indicates the number of 1.5 square millimeter wires. This indicates the number of 2.5 square millimeter wires, i.e. , , , and Describe the harness term; This represents the interaction term between 0.35 square millimeter wire and 0.5 square millimeter wire, i.e. Indicates interaction items between harnesses; , , , , , and Represents the initial fitting coefficients. For constant terms, , , , , This represents the coefficient corresponding to each term in the harness. express Interaction influence coefficients corresponding to inter-harness interaction terms.

[0089] Optionally, the initial fitting coefficients can be set according to actual needs. For example, , , , , , and All values ​​can be set to 1; this application does not impose any restrictions on this.

[0090] S404. Determine the target fitting relationship by using the fitting samples and initial fitting relationship corresponding to the wiring harness assembly.

[0091] In some embodiments, the server can construct a fitting loss function, and then determine the target fitting relationship based on the fitting loss function, the fitting samples corresponding to the harness assembly, and the initial fitting relationship. Specifically, the server can use the harness configuration information of the fitting samples as independent variables, the harness diameter term of the fitting samples as dependent variables, and minimizing the fitting loss function as the objective, to solve the initial fitting relationship using a preset fitting algorithm to obtain the optimal fitting coefficients. Then, the server can substitute the optimal fitting coefficients into the initial fitting relationship to obtain the initial fitting relationship.

[0092] In this process, the number of independent variables in the target fitting relationship is less than a preset threshold, which is determined based on the total number of fitting samples. For example, the preset threshold can be one-half or one-third of the total number of fitting samples; this application does not impose any limitation on this.

[0093] The fitting loss function is used to characterize the fitting deviation between the fitted beam diameter and the actual beam diameter of the fitted sample. The fitting deviation may include, but is not limited to: mean square error, sum of residuals, sum of squares error, root mean square error, and / or coefficient of determination.

[0094] Optionally, the preset fitting algorithm includes, but is not limited to, least squares fitting algorithm, gradient descent algorithm and regularized regression algorithm, and this application does not limit it.

[0095] For example, 15 sets of fitted samples corresponding to the wiring harness assembly were obtained through actual vehicle sampling. The specific fitted sample data are as follows: X1=[7;10;4;17;4;22;12;6;40;22;6;8;6;4;30]; X2=[13;2;5;2;0;10;6;9;5;9;3;6;2;5;3]; X3=[3;0;0;4;1;0;0;1;1;0;0;0;1;0;0]; X4=[4;4;5;5;5;0;2;0;0;2;2;1;0;0;0]; X5=[1;3;3;1;3;0;1;2;0;1;0;3;0;0;0]; Y=[13.6;12.4;11.1;15.5;11.6;12.4;10.6;10.4;13.4;11.9;7.6;10.7;6.8;8.6;11.1].

[0096] Where X1 represents the number of 0.35 square millimeter wires, X2 represents the number of 0.5 square millimeter wires, X3 represents the number of 0.75 square millimeter wires, X4 represents the number of 1.5 square millimeter wires, and X5 represents the number of 2.5 square millimeter wires; Y represents the measured beam diameter of each fitted sample.

[0097] The above columns represent a single wire harness assembly, with each assembly comprising five wire harnesses. For example, the first column shows an assembly containing seven 0.35 sq mm wires, thirteen 0.5 sq mm wires, three 1.5 sq mm wires, four 1.5 sq mm wires, and one 2.5 sq mm wire; the actual bundle diameter (Y) of this assembly is 13.6 mm. Similarly, columns two through fifteen represent the number of wires of different specifications in each of the 14 wire harness assemblies, with Y representing the actual bundle diameter for each of the 14 assemblies.

[0098] Based on the above, the server can arrange the fitted sample data of the five independent variables X1-X5 in rows to construct a 15×5 independent variable matrix X, X=[X1, X2, X3, X4, X5], with each row corresponding to one set of samples and each column corresponding to one independent variable. Then, the server can use the initial fitted relationship as the objective function, the initial fitted coefficients as the starting point for iteration, and minimizing the fitting loss function as the objective. Using the independent variable matrix X and the dependent variable Y as input parameters, the server can call the least squares fitting algorithm in MATLAB (such as the least squares curve fitting function lsqcurvefit) to perform the fitting and solve for the optimal fitted coefficients. Finally, the optimal fitted coefficients are substituted into the initial fitted relationship to obtain the target fitted relationship.

[0099] Optionally, the running parameters of the least squares curve fitting function lsqcurvefit can be set according to actual needs, and there are no restrictions on them. For example, to meet the requirements of automated batch processing, improve computational efficiency, and avoid interference from redundant information, the display options of the least squares curve fitting function lsqcurvefit can be set to off using the optimoptions function to suppress the output of intermediate information during the iteration process, ensure that the solution process is executed silently and efficiently, and only the final parameter fitting results are output.

[0100] In some embodiments, after obtaining the target fitting relationship, the server can calculate an evaluation index based on the fitted beam diameter and the actual beam diameter of the fitted sample, and evaluate the final fitting effect based on the evaluation index. Specifically, the server can determine the fitting coefficient corresponding to the evaluation index meeting preset conditions as the optimal fitting coefficient.

[0101] Optionally, the evaluation metrics may include, but are not limited to, the coefficient of determination R², the root mean square error RMSE, the residuals, and the resnorm; this application does not limit these metrics. Specifically, the coefficient of determination R² satisfies Formula 3 below, the root mean square error RMSE satisfies Formula 4 below, and the residuals and resnorm satisfy Formula 5 below.

[0102] (Formula 3) (Formula 4) (Formula 5) in, This represents the actual bundle diameter of the i-th harness assembly sample (i.e., the fitted sample). This represents the fitted bundle diameter of the i-th harness assembly sample (i.e., the fitted sample). This represents the average actual bundle diameter of all harness assembly samples; n represents the total number of harness assembly samples.

[0103] Optionally, if the coefficient of determination R² is greater than or equal to a preset coefficient of determination threshold (e.g., 0.85), the root mean square error RMSE is less than or equal to a preset root mean square error threshold (e.g., 0.1), and / or the residual sum and resnorm are less than or equal to a preset residual sum threshold, it can be determined that the fitting deviation between the fitted beam diameter and the actual beam diameter of the fitted sample meets the engineering accuracy requirements.

[0104] For example, combining the above 15 sets of fitted samples, Figure 5 The diagram shows the comparison curves between the fitted bundle diameter and the actual bundle diameter for 15 sets of fitted samples (i.e., wiring harness assembly samples). The horizontal axis represents the number of fitted sample sets, and the vertical axis represents the bundle diameter, in millimeters (mm). Based on the fitted and actual bundle diameters of these 15 sets of fitted samples, the calculated coefficient of determination R² is 0.88, the root mean square error (RMSE) is 0.65, and the residual sum and resnorm are 6.38. The average actual bundle diameter of all wiring harness assembly samples is 10.97. The RMSE is within the average of the actual bundle diameters of all wiring harness assembly samples and meets the engineering accuracy requirements of R² ≥ 0.85 and RMSE ≤ 10%.

[0105] Based on the above technical solution, this application identifies wire harness groups with wire harness interactions and constructs exclusive wire harness interaction terms based on the theoretical cross-sectional area of ​​each group of wire harnesses. This quantifies the actual physical effects of intertwining, entanglement, compression, nesting, and gap coupling between wire harnesses, overcoming the shortcomings of traditional fitting methods that only consider the size of a single wire harness and ignore the interactions between wire harnesses. This makes the constructed initial fitting relationship more closely match the actual arrangement of the wire harness assembly, laying the foundation for obtaining accurate and reliable target fitting relationships in the future. Furthermore, based on the initial fitting relationship, data fitting and solving are performed using actual fitting samples, which can optimize and calibrate the model parameters, eliminate the deviation between theoretical modeling and actual engineering applications, and ensure that the final determined target fitting relationship can accurately reflect the correspondence between the cross-sectional area and diameter of the wire harness under real working conditions, meeting the high-precision requirements of wire harness design.

[0106] In an optional implementation, determining the target fitting relationship may further include: the server identifying key harness groups among at least one harness group with harness interactions in the harness assembly under the harness arrangement, and establishing harness interaction terms for the key harness groups. Then, the server may establish an initial fitting relationship based on the harness interaction terms, the individual harness terms of the multiple harnesses in the harness assembly, and the harness diameter term of the harness assembly, and determine the target fitting relationship using the fitting samples corresponding to the harness assembly and the initial fitting relationship.

[0107] Among them, the critical harness group is the harness group whose harness interaction has a greater impact on the harness diameter of the harness assembly than a preset impact threshold. The impact of harness interaction on the harness diameter of the harness assembly can be determined based on the number of wires contained in the harness. For example, the more wires a harness contains, the greater the proportion of wires in the harness, and the greater its impact on the harness diameter of the harness assembly.

[0108] For example, the wiring harness assembly includes wiring harness group 1 and wiring harness group 2. Wiring harness group 1 includes wiring harness a and wiring harness b. Wiring harness a contains 10 wires with a diameter of 0.35 square millimeters, and wiring harness b contains 13 wires with a diameter of 0.5 square millimeters. Wiring harness group 2 includes wiring harness c and wiring harness d. Wiring harness c contains 7 wires with a diameter of 0.75 square millimeters, and wiring harness d contains 5 wires with a diameter of 1.5 square millimeters. Since wiring harness a and wiring harness b contain more wires than wiring harness c and wiring harness d, wiring harness group 1 can be identified as the critical wiring harness group.

[0109] In some embodiments, after determining the key wire harness group in at least one wire harness group with wire harness interaction in the wire harness assembly under the wire harness arrangement, the server can refer to the methods in S401-S404 above to determine the target fitting relationship, which will not be elaborated here.

[0110] Based on the above technical solution, this application obtains key wire harness groups that have a significant impact on the bundle diameter by screening through a preset influence threshold. This can eliminate interference from wire harness groups with weak or negligible interactions, avoid invalid calculations and error interference introduced by redundant interaction relationships, and enable the constructed initial fitting relationship to accurately focus on the interaction factors that play a dominant role in the bundle diameter of the wire harness assembly, thereby greatly improving the rationality of the model and the accuracy of the bundle diameter calculation.

[0111] In an optional implementation, determining the target fitting relationship may further include: If there are no interconnected wire harness groups in the wire harness assembly under a given wire harness arrangement, the server may establish an initial fitting relationship based on the individual wire harness terms of the multiple wire harnesses in the wire harness assembly and the bundle diameter term of the wire harness assembly. Then, the server may use the fitting samples corresponding to the wire harness assembly and the initial fitting relationship to determine the target fitting relationship.

[0112] In some embodiments, when the server determines that there are no interconnected wire harness groups in the wire harness assembly under the wire harness arrangement, the bundle diameter of the wire harness assembly can be regarded as a simple function of the contribution of each independent wire harness. The server can establish an initial fitting relationship based on the methods described in S403-S404 above, using the individual wire harness terms of the multiple wire harnesses in the wire harness assembly and the bundle diameter term of the wire harness assembly, and then determine the target fitting relationship using the fitting samples corresponding to the wire harness assembly and the initial fitting relationship.

[0113] For example, when there is no wire harness group with wire harness interaction in the wire harness assembly B, the target fitting relationship corresponding to the target wire harness assembly B satisfies the following formula 6.

[0114] (Formula 6) in, Indicates the bundle diameter of the wire harness assembly. This indicates the number of 0.35 square millimeter wires. Indicates the number of 0.5 square millimeter wires. Indicates the number of 0.75 square millimeter wires. Indicates the number of 1.5 square millimeter wires. This indicates the number of 2.5 square millimeter wires, i.e. - 5 indicates a single harness item; , , , , , and This represents the fitting coefficient, i.e., the optimal fitting coefficient.

[0115] Based on the above technical solution, in the scenario of wireless beam interaction, this application does not require the construction of beam interaction terms. Instead, it constructs an initial fitting relationship based solely on beam terms and beam diameter terms that represent the configuration information of a single beam. This effectively reduces model parameters and computational dimensions, avoids introducing invalid parameters that lead to model redundancy, and significantly reduces the complexity of constructing and solving the fitting relationship.

[0116] like Figure 6 As shown in the figure, this application provides a harness diameter determination device for a wire harness assembly, the device including: a first determination unit 601 and a second determination unit 602.

[0117] The first determining unit 601 is used to determine the wiring harness configuration information of the target wiring harness assembly; wherein, the target wiring harness assembly includes multiple wiring harnesses; each of the multiple wiring harnesses includes a conductor of a certain specification; the wiring harness configuration information is used to characterize the theoretical cross-sectional area of ​​each of the multiple wiring harnesses.

[0118] The second determining unit 602 is used to determine the bundle diameter of the target wire harness assembly based on the wire harness configuration information and the target fitting relationship; wherein, the target fitting relationship is used to characterize the correspondence between the theoretical cross-sectional area of ​​each of the multiple wire harnesses of the wire harness assembly and the bundle diameter of the wire harness assembly after incorporating the interaction between wire harnesses under the wire harness arrangement corresponding to the target wire harness assembly.

[0119] In one possible embodiment, the second determining unit 602 includes: a first determining subunit, a first establishing subunit, a second establishing subunit, and a second determining subunit. The first determining subunit is used to determine at least one group of wire harnesses in the wire harness assembly with wire harness interactions under the wire harness arrangement. The first establishing subunit is used to establish wire harness interaction terms for each of the at least one group of wire harnesses; wherein the wire harness interaction terms are collectively represented by the theoretical cross-sectional areas of the individual wire harnesses included in the group. The second establishing subunit is used to establish an initial fitting relationship based on the wire harness interaction terms, the individual wire harness terms of the multiple wire harnesses in the wire harness assembly, and the bundle diameter term of the wire harness assembly; wherein the wire harness terms are represented by the theoretical cross-sectional areas of the wire harnesses. The second determining subunit is used to determine a target fitting relationship using the fitting samples corresponding to the wire harness assembly and the initial fitting relationship.

[0120] In one possible approach, the second subunit is specifically used to construct a multivariate polynomial nonlinear fitting relation for fitting constant terms, the coefficients of the wire harness interaction term and the wire harness term as independent variables and the wire harness diameter term as dependent variable; the multivariate polynomial nonlinear fitting relation is then determined as the initial fitting relation.

[0121] In one possible approach, the second determining subunit is specifically used to construct the fitting loss function; wherein the fitting loss function is used to characterize the fitting deviation between the fitted beam diameter and the actual beam diameter of the fitted sample; and the target fitting relationship is determined based on the fitting loss function, the fitted sample, and the initial fitting relationship.

[0122] In one possible approach, the number of terms in the target fitted relationship is less than a preset term threshold. The second determining subunit is also used to determine the preset term threshold based on the total number of fitted samples.

[0123] In one possible approach, the first determining subunit is further configured to determine a key wire harness group among at least one wire harness group in the wire harness assembly where wire harness interactions exist under the wire harness arrangement; wherein, the key wire harness group is a wire harness group whose influence on the wire harness diameter of the wire harness assembly is greater than a preset influence threshold. The first establishing subunit is further configured to establish wire harness interaction terms for the key wire harness group; wherein, the wire harness interaction terms are collectively represented by the theoretical cross-sectional areas of each wire harness included in the key wire harness group. The second establishing subunit is further configured to establish an initial fitting relationship based on the wire harness interaction terms, the individual wire harness terms of multiple wire harnesses in the wire harness assembly, and the wire harness diameter term of the wire harness assembly; wherein, the wire harness terms are represented by the theoretical cross-sectional areas of the wire harnesses. The second determining subunit is further configured to determine a target fitting relationship using the fitting samples corresponding to the wire harness assembly and the initial fitting relationship.

[0124] In one possible approach, the first sub-unit is further used to establish an initial fitting relationship based on the individual wire harness terms of multiple wire harnesses in the wire harness assembly and the bundle diameter term of the wire harness assembly, when there are no wire harness interaction groups in the wire harness assembly under a determined wire harness arrangement; wherein the wire harness term is represented by the theoretical cross-sectional area of ​​the wire harness. The second sub-unit is further used to determine the target fitting relationship using the fitting samples corresponding to the wire harness assembly and the initial fitting relationship.

[0125] like Figure 7 As shown in the embodiments of this application, an electronic device includes, but is not limited to, a processor 701 and a memory 702.

[0126] The memory 702 described above is used to store the executable instructions of the processor 701. It is understood that the processor 701 is configured to execute instructions to implement the method for determining the diameter of the wire harness assembly in the above embodiment.

[0127] It should be noted that those skilled in the art will understand that Figure 7 The electronic device structure shown does not constitute a limitation on the electronic device; the electronic device may include, but is not limited to, other electronic devices. Figure 7 This may indicate more or fewer components, or combinations of certain components, or different component arrangements.

[0128] Processor 701 is the control center of the electronic device. It connects various parts of the electronic device via various interfaces and lines. By running or executing software programs and / or modules stored in memory 702, and by calling data stored in memory 702, it performs various functions and processes data, thereby providing overall monitoring of the electronic device. Processor 701 may include one or more processing units. Optionally, processor 701 may integrate an application processor and a modem processor. The application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into processor 701.

[0129] The memory 702 can be used to store software programs and various data. The memory 702 may primarily include a program storage area and a data storage area. The program storage area may store the operating system, application programs required by at least one functional module (such as a determination unit, processing unit, etc.), etc. Furthermore, the memory 702 may include high-speed random access memory and may also include non-volatile memory. For example, the non-volatile memory may include at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0130] In an exemplary embodiment, a computer-readable storage medium including instructions is also provided, such as a memory 702 including instructions, which can be executed by a processor 701 of an electronic device to implement the methods in the above embodiments.

[0131] Optionally, the computer-readable storage medium may be a non-transitory computer-readable storage medium, such as a read-only memory (ROM), random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device.

[0132] In an exemplary embodiment, this application also provides a computer program product including one or more instructions, which can be executed by a processor 701 of an electronic device to perform the methods described above.

[0133] It should be noted that when one or more instructions in the computer-readable storage medium or computer program product are executed by the processor of an electronic device, they implement the various processes of the above method embodiments and achieve the same technical effect as the above method. To avoid repetition, they will not be described again here.

[0134] Through the above description of the embodiments, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0135] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another apparatus, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0136] The units described as separate components may or may not be physically separate. A component shown as a unit can be one or more physical units; that is, it can be located in one place or distributed in multiple different locations. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0137] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0138] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solutions of the embodiments of this application, essentially, or the parts that contribute to the prior art, or all or part of the technical solutions, can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0139] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for determining the diameter of a wire harness assembly, characterized in that, The method for determining the diameter of the wiring harness assembly includes: Determine the wiring harness configuration information of the target wiring harness assembly; wherein, the target wiring harness assembly includes multiple wiring harnesses; each of the multiple wiring harnesses includes a conductor of a certain specification; the wiring harness configuration information is used to characterize the theoretical cross-sectional area of ​​each of the multiple wiring harnesses; Based on the harness configuration information and the target fitting relationship, the diameter of the target harness assembly is determined; wherein, the target fitting relationship is used to characterize the correspondence between the theoretical cross-sectional area of ​​each of the multiple harnesses of the harness assembly and the diameter of the harness assembly after incorporating the interaction between the harnesses under the harness arrangement corresponding to the target harness assembly.

2. The method for determining the bundle diameter of the wire harness assembly according to claim 1, characterized in that, The process of determining the target fitting relationship includes: It is determined that there is at least one group of wire harnesses with wire harness interaction in the wire harness assembly under the wire harness arrangement method; Establish wire harness interaction terms for each of the at least one wire harness group; wherein the wire harness interaction terms are collectively represented by the theoretical cross-sectional areas of the individual wire harnesses included in the wire harness group; An initial fitting relationship is established based on the wire harness interaction term, the individual wire harness terms of the multiple wire harnesses in the wire harness assembly, and the wire harness diameter term of the wire harness assembly; wherein, the wire harness term is represented by the theoretical cross-sectional area of ​​the wire harness. The target fitting relationship is determined using the fitting samples corresponding to the wiring harness assembly and the initial fitting relationship.

3. The method for determining the bundle diameter of the wire harness assembly according to claim 2, characterized in that, The wire harness interaction term is represented by the product of the theoretical cross-sectional areas of the individual wire harnesses included in the wire harness group.

4. The method for determining the bundle diameter of the wire harness assembly according to claim 2, characterized in that, The theoretical cross-sectional area of ​​the wire harness is expressed by the cross-sectional area of ​​a single conductor in the wire harness and the number of conductors.

5. The method for determining the bundle diameter of the wire harness assembly according to any one of claims 2-4, characterized in that, The initial fitting relationship is established based on the harness interaction term, the harness terms of each of the multiple harnesses in the harness assembly, and the harness diameter term of the harness assembly, including: Using the harness interaction term and the harness term as independent variables and the harness diameter term as dependent variable, a multivariate polynomial nonlinear fitting relationship is constructed to fit the constant term, the coefficient of the harness interaction term, and the coefficient of the harness term. The multivariate polynomial nonlinear fitting relationship is determined as the initial fitting relationship.

6. The method for determining the bundle diameter of the wire harness assembly according to claim 2, characterized in that, The wiring harness arrangement method includes at least one of twisting, winding, and extrusion.

7. The method for determining the bundle diameter of the wire harness assembly according to claim 2, characterized in that, The step of determining the target fitting relationship using the fitting samples corresponding to the wiring harness assembly and the initial fitting relationship includes: Construct a fitting loss function; wherein the fitting loss function is used to characterize the fitting deviation between the fitted beam diameter and the actual beam diameter of the fitted sample; The target fitting relationship is determined based on the fitting loss function, the fitting samples, and the initial fitting relationship.

8. The method for determining the bundle diameter of the wire harness assembly according to claim 7, characterized in that, The number of independent variables in the target fitting relationship is less than a preset threshold; the preset threshold is determined based on the total number of fitting samples.

9. The method for determining the bundle diameter of the wire harness assembly according to claim 2, characterized in that, The process of determining the target fitting relationship also includes: Identify the key wire harness group among at least one wire harness group in the wire harness assembly under the wire harness arrangement; wherein, the key wire harness group is the wire harness group whose influence on the wire harness diameter of the wire harness assembly is greater than a preset influence threshold. Establish the harness interaction terms for the key harness group; wherein the harness interaction terms are collectively represented by the theoretical cross-sectional areas of each harness included in the key harness group; An initial fitting relationship is established based on the wire harness interaction term, the individual wire harness terms of the multiple wire harnesses in the wire harness assembly, and the wire harness diameter term of the wire harness assembly; wherein, the wire harness term is represented by the theoretical cross-sectional area of ​​the wire harness. The target fitting relationship is determined using the fitting samples corresponding to the wiring harness assembly and the initial fitting relationship.

10. The method for determining the bundle diameter of the wire harness assembly according to claim 2, characterized in that, The process of determining the target fitting relationship also includes: If it is determined that there are no wire harness groups with wire harness interaction in the wire harness assembly under the wire harness arrangement, an initial fitting relationship is established based on the wire harness terms of each of the multiple wire harnesses in the wire harness assembly and the bundle diameter term of the wire harness assembly; wherein, the wire harness term is represented by the theoretical cross-sectional area of ​​the wire harness. The target fitting relationship is determined using the fitting samples corresponding to the wiring harness assembly and the initial fitting relationship.

11. A device for determining the diameter of a wire harness assembly, characterized in that, The harness assembly diameter determination device includes: The first determining unit is used to determine the wiring harness configuration information of the target wiring harness assembly; wherein, the target wiring harness assembly includes multiple wiring harnesses; each of the multiple wiring harnesses includes a conductor of a certain specification; the wiring harness configuration information is used to characterize the theoretical cross-sectional area of ​​each of the multiple wiring harnesses; The second determining unit is used to determine the bundle diameter of the target wire harness assembly based on the wire harness configuration information and the target fitting relationship; wherein, the target fitting relationship is used to characterize the correspondence between the theoretical cross-sectional area of ​​each of the multiple wire harnesses of the wire harness assembly and the bundle diameter of the wire harness assembly after incorporating the interaction between the wire harnesses under the wire harness arrangement corresponding to the target wire harness assembly.

12. A vehicle, characterized in that, The vehicle is equipped with a harness diameter determination device for the wiring harness assembly as described in claim 11.

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