A vehicle digital prototype (DPA) static gap automatic inspection method and system

Abstract

The application provides a vehicle digital prototype DPA static gap automatic inspection method and system, the method comprises the following steps: establishing a part function position coding standard which defines the corresponding relationship between each assembly function position in the whole vehicle and the part function position code; constructing a digital prototype according to the part function position coding standard and based on product structure data carrying the part function position code; establishing a DPA static gap inspection standard, defining the starting part function position code and the target part function position code for each static gap inspection item in the DPA static gap inspection standard, and converting the DPA static gap inspection standard into a gap inspection rule recognizable by a computer; in the digital prototype management platform, automatically completing the whole vehicle DPA static gap inspection by using a computer program according to the starting part function position code and the target part function position code in the gap inspection rule, effectively improving the inspection efficiency and accuracy, and effectively guaranteeing the robustness and design quality of product design.

Description

Technical Field

[0001] This invention belongs to the field of automotive design technology, specifically relating to an automatic method and system for checking the static gap of a digital prototype vehicle (DPA). Background Technology

[0002] In the field of automotive design, Digital Pre-Assembly (DPA) analysis is a process of verifying the static clearances, dynamic movements, disassembly and assembly, human-machine interface, and regulatory compliance of the entire vehicle or its subsystems in a three-dimensional virtual environment. Its purpose is to utilize virtual methods to identify interference and layout issues in advance, thereby improving product design quality, reducing prototype production costs, and shortening the development cycle.

[0003] When conducting DPA analysis, automotive OEMs typically use Product Lifecycle Management (PLM) systems to manage digital electronic prototypes and integrate PLM software with 3D visualization simulation software or computer-aided 3D interactive applications. In a typical workflow of existing technologies, layout engineers load the digital prototype into the aforementioned 3D visualization software and then, based on DPA gap inspection requirements, use the software's built-in measurement and gap analysis functions to check whether the gaps in the product design meet the DPA gap requirements.

[0004] However, the number of DPA (Design for Approval and Inspection) items for a complete vehicle typically reaches nearly ten thousand, and multiple rounds of complete DPA checks are required throughout the product development process. Existing technologies have the following drawbacks: the entire inspection process is highly dependent on manual operation, requiring a significant amount of manpower and time; furthermore, human negligence may lead to the omission of some inspection items, resulting in potential risks that cannot be identified and avoided in advance, thereby affecting the design quality and development efficiency of the product.

[0005] In the aforementioned existing technical processes, there is a lack of a method that can automatically associate the digital models of parts in the digital prototype with the inspection items in the DPA clearance inspection standard, and automatically drive the execution of the whole vehicle DPA static clearance inspection by a computer program. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides an automatic method and system for checking the static gap of a digital prototype vehicle (DPA), which solves the technical problems in the prior art.

[0007] On the one hand, the invention provides the following technical solution: an automatic method for checking the static gap of a digital prototype vehicle (DPA), the method comprising: A component functional position coding standard is established, which specifies the correspondence between each assembly functional position in the vehicle and the component functional position code. According to the part functional location coding standard, assign corresponding part functional location codes to the parts of the vehicle; Based on product structure data carrying the functional location codes of the parts, a digital prototype is constructed; wherein, the digital prototype has a hierarchical structure divided according to the functional location codes of the parts, and each functional location code of the parts is associated with a three-dimensional digital model of the corresponding part under the hierarchical node of the hierarchical structure. A DPA static clearance inspection standard is established. In this standard, a starting part functional position code and a target part functional position code are defined for each static clearance inspection item. The DPA static clearance inspection standard is then converted into computer-recognizable clearance inspection rules. The starting part functional position code and the target part functional position code in these clearance inspection rules correspond to the part functional position codes in the digital prototype vehicle, and are used to indicate the clearance requirements that should be met between a part with the starting part functional position code and a part with the target part functional position code. In the digital prototype management platform, based on the starting part functional position code and the target part functional position code in the gap inspection rules, the three-dimensional digital model of the part under the respective hierarchical node of the starting part functional position code and the target part functional position code is retrieved from the digital prototype. The retrieved three-dimensional digital model of the part is automatically subjected to gap analysis, and it is determined whether the analysis result meets the gap requirements in the gap inspection rules.

[0008] Compared to existing technologies, the beneficial effects of this application are as follows: By constructing a digital prototype with a hierarchical structure divided according to the functional position codes of parts, this invention provides a standardized product data structure. This structure enables computer programs to quickly and accurately locate and retrieve the 3D digital models of the parts to be analyzed from the complex structure of the entire vehicle based on the starting and target functional position codes defined in the inspection rules, ensuring the accuracy and high efficiency of automatic inspection. By loading gap inspection rules into the digital prototype management platform and automatically executing gap analysis, this invention transforms the massive inspection work that originally required engineers to manually perform line by line into automated batch processing by computer programs. This greatly improves the inspection efficiency of static gaps in the entire vehicle's DPA (Device Positioning Apparatus), significantly shortens the R&D cycle, and effectively eliminates the risk of missed or incorrect inspections caused by human fatigue or negligence, thereby strongly guaranteeing the robustness and design quality of the product design.

[0009] Furthermore, the part functional location coding standard is established based on the standard system of product structure classification, part functional location and intermediate number, wherein each part functional location code is divided into at least one part basic number.

[0010] Furthermore, the step of assigning corresponding part function location codes to the vehicle parts includes: In the bill of materials system, the part function location code corresponding to the part is inherited to the bill of materials row to which the part is applied.

[0011] Furthermore, the steps for constructing the digital prototype include: In response to the release of bill of materials data carrying the functional location codes of the parts, the product collaboration platform is driven to automatically construct the digital prototype; wherein, the naming of the hierarchical node containing the functional location codes of each part in the digital prototype includes the corresponding functional location codes of the parts.

[0012] Furthermore, the product collaboration platform is the Teamcenter Engineering platform.

[0013] Furthermore, the method also includes: The gap inspection rules are loaded into the gap inspection library module of the digital prototype management platform; Before performing the gap analysis, the digital prototype vehicle model to be inspected is specified in the gap inspection library module.

[0014] Furthermore, the digital prototype management platform is Teamcenter Vis Mockup, and the gap inspection library module is Clearance DB gap inspection library.

[0015] Secondly, the invention provides the following technical solution: an automatic static clearance inspection system for a digital prototype vehicle (DPA), the system comprising: A module is established to establish a part functional position coding standard, which specifies the correspondence between each assembly functional position in the vehicle and the part functional position code. The assignment module is used to assign corresponding part function location codes to the parts of the vehicle according to the part function location coding standard. A construction module is used to construct a digital prototype based on product structure data carrying the functional location codes of the parts; wherein, the digital prototype has a hierarchical structure divided according to the functional location codes of the parts, and each functional location code of the parts is associated with a three-dimensional digital model of the corresponding part under the hierarchical node of the hierarchical structure. The conversion module is used to establish a DPA static clearance inspection standard. In the DPA static clearance inspection standard, a starting part functional position code and a target part functional position code are defined for each static clearance inspection item. The DPA static clearance inspection standard is then converted into a computer-recognizable clearance inspection rule. The starting part functional position code and the target part functional position code in the clearance inspection rule correspond to the part functional position codes in the digital prototype vehicle, and are used to indicate the clearance requirements that should be met between a part with the starting part functional position code and a part with the target part functional position code. The judgment module is used in the digital prototype vehicle management platform to retrieve the 3D digital models of the parts under the respective hierarchical nodes of the starting part functional position code and the target part functional position code in the gap inspection rules, based on the starting part functional position code and the target part functional position code in the gap inspection rules, automatically perform gap analysis on the retrieved 3D digital models of the parts, and determine whether the analysis results meet the gap requirements in the gap inspection rules.

[0016] Thirdly, the invention provides the following technical solution: a computer, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-described automatic static gap inspection method for digital prototype vehicle (DPA).

[0017] Fourthly, the invention provides the following technical solution: a storage medium storing a computer program, which, when executed by a processor, implements the above-described automatic static gap inspection method for a digital prototype vehicle (DPA). Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A flowchart of the automatic static gap inspection method for a digital prototype vehicle (DPA) provided in the first embodiment of the present invention; Figure 2 This is an example diagram illustrating the hierarchical division of the product structure classification-part functional location-intermediate number (CPSC-PAF-BPNO) standard in an embodiment of the present invention; Figure 3 This is a schematic diagram showing the overall view of the digital prototype vehicle with the PAF layer added to the TCE system in this embodiment of the invention; Figure 4 This is an example diagram of the DPA static gap inspection standard with PAF code in an embodiment of the present invention. Figure 5 This is a deployment architecture diagram of the gap inspection library system according to an embodiment of the present invention; Figure 6 This is a structural block diagram of the vehicle digital prototype DPA static gap automatic inspection system provided in the second embodiment of the present invention; Figure 7 This is a schematic diagram of the hardware structure of a computer provided in the third embodiment of the present invention.

[0020] The embodiments of the present invention will be further described below with reference to the accompanying drawings. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain embodiments of the present invention, and should not be construed as limiting the present invention.

[0022] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] Example 1 In the first embodiment of the present invention, please refer to Figure 1 As shown, an automatic method for checking the static gap of a digital prototype vehicle (DPA) includes the following steps S01 to S05: S01, Establish a part functional position coding standard, wherein the part functional position coding standard specifies the correspondence between each assembly functional position in the whole vehicle and the part functional position code; Specifically, the part functional position coding standard is established based on the standard system of product structure classification, part functional position and intermediate number, wherein each part functional position code is divided into at least one part basic number.

[0025] In this embodiment, the first step is to establish an enterprise-level, standardized part functional location coding standard. This standard system consists of three levels: Product Structure Classification (CPSC), Part Functional Location (PAF), and Intermediate Number (BPNO), and can therefore be simply referred to as the CPSC-PAF-BPNO standard.

[0026] Specifically, the standard specifies the CPSC (Completely Constructed System Structural Classification) for the entire vehicle, which involves dividing the product structure from top to bottom, starting with the entire vehicle system. Building upon this, it further specifies the Part Functional Location (PAF) classification, defining a unique Part Functional Location Code (PAF code) for each specific assembly functional location within the vehicle. The PAF code allows for quick and unambiguous identification of the specific functional location where a part or fastener is assembled. The third level of the standard defines the basic part numbers (BPNO numbers, i.e., intermediate numbers) included under each PAF code. These BPNOs represent the various specific parts that can be installed in the stated functional location.

[0027] Thus, this standard system forms a complete and clear hierarchical coding definition, from the overall vehicle coarse-grained structure (CPSC) to specific functional locations (PAFs), and then to the various specific parts (BPNOs) that may be assembled at that location. This standard is the cornerstone of the entire automated inspection method, and its purpose is to ensure that the functional location of any part or fastener in the vehicle can be uniquely identified by a specific PAF code, thereby providing a unified "language" for the automatic association between the BOM, digital prototype, and inspection rules in subsequent steps.

[0028] For ease of understanding, such as Figure 2 As shown, from the whole vehicle system to the suspension system, then to the front suspension system and the front suspension spring, and finally down to the basic part numbers (such as reinforcement-front spring-dry, front spring upper pad, front spring fastener assembly, etc.), a complete hierarchical coding definition system is formed.

[0029] S02, according to the part functional location coding standard, assign corresponding part functional location codes to the parts of the vehicle; Specifically, the step of assigning corresponding part function location codes to vehicle parts includes: In the bill of materials system, the part function location code corresponding to the part is inherited to the bill of materials row to which the part is applied.

[0030] In this embodiment, after establishing the coding standard, it needs to be implemented in the product's material data. Specifically, when building the Early Engineering Bill of Materials (EBOM) in the Bill of Materials (BOM) system, once it is determined which BOM line a certain part will be applied to, the Part Functional Location Code (PAF code) corresponding to that part is inherited as an attribute to that BOM line.

[0031] S03, Based on the product structure data carrying the functional location codes of the parts, a digital prototype is constructed; wherein, the digital prototype has a hierarchical structure divided according to the functional location codes of the parts, and each functional location code of the parts is associated with a three-dimensional digital model of the corresponding part under the hierarchical node of the hierarchical structure. Specifically, the steps for constructing the digital prototype include: In response to the release of bill of materials data carrying the functional location codes of the parts, the product collaboration platform is driven to automatically construct the digital prototype; wherein, the naming of the hierarchical node containing the functional location codes of each part in the digital prototype includes the corresponding functional location codes of the parts.

[0032] Specifically, the product collaboration platform is the Teamcenter Engineering platform.

[0033] In this embodiment, after establishing the coding standard, it is necessary to implement the standard into the product's material data, and use the material data to drive the construction of a digital prototype.

[0034] Specifically, the initial Engineering Bill of Materials (EBOM) is first built in the BOM system. When a part number is applied to a BOM line, the system inherits the part's PAF code to that BOM line. Subsequently, by clicking a specific attribute button on the BOM line—the "Do you need to build PAF / DI?" button—it is possible to indicate whether the BOM line will participate in the subsequent PAF hierarchy construction.

[0035] Once the BOM is published, the above operations will trigger and drive the Product Collaboration Platform (TCE) to automatically build a standardized digital prototype with PAF levels based on the BOM data carrying PAF code information.

[0036] The structural feature of this digital prototype is that, in addition to the traditional product structure, an extra PAF layer is added, divided according to the functional location codes of the parts. The DI (Digital Instance) and the specific 3D digital models of the parts are directly attached to these corresponding PAF nodes. The PAF layer numbering follows a unified naming rule, namely the format "PAF-Platform Code-PAF Code", which means that the PAF code directly contains the PAF code information.

[0037] Through this structure, the PAF code becomes the key link connecting the digital prototype and the DPA inspection items, and the association between the two can be quickly established through the PAF code.

[0038] For ease of understanding, such as Figure 3 As shown, the TCE digital prototype structure tree displays PAF nodes (such as vehicle system, body system, frame and suspension system, etc.) expanded hierarchically. DI and parts are all attached to the corresponding PAF nodes, and the PAF code contains the PAF code.

[0039] S04, establish a DPA static clearance inspection standard, define a starting part functional position code and a target part functional position code for each static clearance inspection item in the DPA static clearance inspection standard, and convert the DPA static clearance inspection standard into a computer-recognizable clearance inspection rule; wherein, the starting part functional position code and the target part functional position code in the clearance inspection rule correspond to the part functional position codes in the digital prototype, and are used to indicate the clearance requirements that should be met between the part with the starting part functional position code and the part with the target part functional position code; Specifically, the method further includes: The gap inspection rules are loaded into the gap inspection library module of the digital prototype management platform; Before performing the gap analysis, the digital prototype vehicle model to be inspected is specified in the gap inspection library module.

[0040] Specifically, the digital prototype management platform is Teamcenter Vis Mockup, and the gap inspection library module is Clearance DB gap inspection library.

[0041] In this embodiment, after preparing the standards and data, a software environment for performing automated checks needs to be built. This method relies on the gap inspection library module in the digital prototype management platform to achieve the automated inspection function.

[0042] In a preferred embodiment, the digital prototype management platform is Teamcenter Vis Mockup software, and the clearance inspection library module is the Clearance DB clearance inspection library. The overall architecture and deployment of the Clearance DB clearance inspection library are supported by the software vendor.

[0043] For ease of understanding, such as Figure 4As shown, this gap checking library adopts a layered architecture, including a server tier, a proxy tier, and a client tier. The server tier contains the Clearance DB server and an Oracle database, responsible for core data storage and management; the proxy tier facilitates communication relay through SQLNet, the Oracle client, and the Clearance DB proxy; and the client tier includes tools such as the gap calculator (Clearance.exe), responsible for executing specific gap calculation tasks. Clearance DB is tightly integrated with the Teamcenter platform, working collaboratively through components such as the Teamcenter server, ClearanceDB web service, and BOMwriter to provide a complete software infrastructure for automated checking.

[0044] In this embodiment, after the software environment is deployed, the DPA static gap check standard containing PAF code information in step S03 needs to be converted into a gap check rule format that can be recognized by the computer program. After the conversion is completed, these gap check rules are sent and loaded into the Clearance DB gap check library, forming a gap check rule library that can be called in the system.

[0045] S05, in the digital prototype management platform, according to the starting part functional position code and the target part functional position code in the gap inspection rules, the three-dimensional digital model of the part under the hierarchical node where the starting part functional position code and the target part functional position code are located is retrieved from the digital prototype. The gap analysis is automatically performed on the retrieved three-dimensional digital model of the part, and it is determined whether the analysis result meets the gap requirements in the gap inspection rules.

[0046] In this embodiment, the digital prototype vehicle model to be inspected is first defined in the Clearance DB gap inspection library of TC Vis Mockup, and then the automatic DPA gap inspection program for the whole vehicle is started.

[0047] Once the system begins automatic execution, it will automatically retrieve the 3D digital models of the parts associated with the corresponding PAF level nodes from the digital prototype based on the From Name PAF and To Name PAF information defined in the static clearance check rules. Subsequently, the system will automatically perform clearance checks on the retrieved models to determine whether the part design meets the clearance requirements, and store the generated clearance check results in the database.

[0048] After the automatic inspection is completed, the layout engineer reviews the clearance inspection results in TC Vis Mockup based on the vehicle's 3D view. Any non-conformities found are sent as issue items to the relevant part design engineer for redesign.

[0049] By following the five steps above, a computer program can automatically perform DPA clearance checks on digital prototype vehicles, quickly completing the overall vehicle DPA static clearance check during product development. This method effectively improves product design quality, significantly enhances the work efficiency of layout engineers, and shortens the development cycle.

[0050] In summary, the automatic method for checking the static gap of a digital prototype vehicle (DPA) has the following advantages: By establishing a unified coding standard for enterprise product structure, part functional position (PAF), and part basic number, and assigning corresponding part functional position codes to parts and DPA static clearance inspection items, this invention establishes a computer-automatically identifiable association between the part models of digital prototypes and clearance inspection rules. This association mechanism eliminates the reliance on manual interpretation of inspection requirements and manual searching of corresponding part models, providing a standardized data foundation and core technological prerequisite for achieving fully automated inspection.

[0051] This invention provides a standardized product data structure based on functional location, enabling the automatic construction of a digital prototype with a PAF hierarchy within the TCE using BOM-driven architecture. This structure allows computer programs to quickly and accurately locate and retrieve the 3D digital models of the parts to be analyzed from the complex structure of the vehicle, based on the starting and target part functional location codes defined in the inspection rules. This eliminates the inefficient traditional method of manually searching for parts, ensuring the accuracy and high efficiency of automated inspection.

[0052] With the support of the software vendor, the architecture and deployment of the Clearance DB clearance inspection library in the Teamcenter Vis Mockup software were completed. Static clearance inspection rules and digital prototypes are invoked from the Clearance DB library. Inspection items are automatically associated with the part's digital model via PAF codes, and the computer program automatically completes the static clearance inspection (DPA) of the entire vehicle. This invention transforms the massive amount of manual inspection work that previously required engineers to perform item by item into automated batch processing by a computer program, supporting the rapid completion of DPA clearance inspections for the entire vehicle in product projects. Compared to traditional manual inspection methods, this significantly improves the efficiency and accuracy of DPA inspections, effectively eliminating the risk of missed or incorrect inspections due to human fatigue or negligence.

[0053] In summary, through the synergistic effect of the above-mentioned stages, this invention makes the product design and development process more robust and efficient, effectively guarantees the quality of product development, significantly shortens the development cycle, and reduces the cost of prototype production.

[0054] Example 2 like Figure 6 As shown, a second embodiment of the present invention provides an automatic static gap inspection system for a digital prototype vehicle (DPA), the system comprising: Module 10 is used to establish a part functional position coding standard, which specifies the correspondence between each assembly functional position and the part functional position code in the whole vehicle. The assignment module 20 is used to assign corresponding part function location codes to the parts of the vehicle according to the part function location coding standard. The construction module 30 is used to construct a digital prototype based on product structure data carrying the functional location codes of the parts; wherein, the digital prototype has a hierarchical structure divided according to the functional location codes of the parts, and each functional location code of the parts is associated with a three-dimensional digital model of the corresponding part under the hierarchical node of the hierarchical structure. The conversion module 40 is used to establish a DPA static clearance inspection standard, define a starting part functional position code and a target part functional position code for each static clearance inspection item in the DPA static clearance inspection standard, and convert the DPA static clearance inspection standard into a computer-recognizable clearance inspection rule; wherein, the starting part functional position code and the target part functional position code in the clearance inspection rule correspond to the part functional position codes in the digital prototype, and are used to indicate the clearance requirements that should be met between the part with the starting part functional position code and the part with the target part functional position code; The judgment module 50 is used in the digital prototype vehicle management platform to retrieve the three-dimensional digital models of the parts under the respective hierarchical nodes of the starting part functional position code and the target part functional position code in the gap inspection rules, based on the starting part functional position code and the target part functional position code in the gap inspection rules, automatically perform gap analysis on the retrieved three-dimensional digital models of the parts, and determine whether the analysis results meet the gap requirements in the gap inspection rules.

[0055] The vehicle digital prototype DPA static gap automatic inspection system provided in this embodiment of the invention has the same implementation principle and technical effect as the aforementioned method embodiment. For the sake of brevity, any parts not mentioned in the system embodiment can be referred to the corresponding content in the aforementioned method embodiment.

[0056] Example 3 like Figure 7As shown, in the third embodiment of the present invention, the present invention provides the following technical solution: a computer, including a memory 202, a processor 201, and a computer program stored in the memory 202 and executable on the processor 201, wherein the processor 201 executes the computer program to implement the automatic inspection method for static gap of the vehicle digital prototype DPA as described above.

[0057] Specifically, the processor 201 may include a central processing unit, a specific integrated circuit, or one or more integrated circuits that can be configured to implement the embodiments of this application.

[0058] Memory 202 may include a large-capacity memory for data or instructions. For example, and not limitingly, memory 202 may include a hard disk drive, floppy disk drive, solid-state drive, flash memory, optical disk drive, magneto-optical disk drive, magnetic tape drive, or Universal Serial Bus drive, or a combination of two or more of these. Where appropriate, memory 202 may include removable or non-removable media. Where appropriate, memory 202 may be internal or external to a data processing device. In a particular embodiment, memory 202 is non-volatile memory. In a particular embodiment, memory 202 includes read-only memory and random access memory (ROM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable ROM, an erasable PROM, an electrically erasable PROM, an electrically rewritable ROM, or flash memory, or a combination of two or more of these. Where appropriate, the RAM may be static random access memory (SRAM) or dynamic random access memory (DRAM), wherein DRAM may be fast page-mode DRAM, extended data output DRAM, synchronous DRAM, etc.

[0059] The memory 202 can be used to store or cache various data files that need to be processed and / or communicated, as well as possible computer program instructions executed by the processor 201.

[0060] The processor 201 reads and executes the computer program instructions stored in the memory 202 to implement the above-mentioned automatic static gap inspection method for the digital prototype vehicle (DPA).

[0061] In some embodiments, the computer may further include a communication interface 203 and a bus 200. For example, Figure 7 As shown, the processor 201, memory 202, and communication interface 203 are connected through bus 200 and complete communication with each other.

[0062] The communication interface 203 is used to enable communication between the various modules, devices, units, and / or equipment in the embodiments of this application. The communication interface 203 can also enable data communication with other components such as external devices, image / data acquisition devices, databases, external storage, and image / data processing workstations.

[0063] Bus 200 includes hardware, software, or both, that couples computer components together. Bus 200 includes, but is not limited to, at least one of the following: data bus, address bus, control bus, expansion bus, local bus. For example, and not limitingly, bus 200 may include a graphics acceleration interface or other graphics bus, an enhanced industry standard architecture bus, a front-side bus, HyperTransport interconnect, an industry standard architecture bus, a wireless bandwidth interconnect, a low pin count bus, a memory bus, a WeChat architecture bus, a peripheral component interconnect bus, a PCI Express bus, a Serial Advanced Technology Attached Bus, a Video Electronics Standards Association local bus, or other suitable buses, or combinations of two or more of these. Where appropriate, bus 200 may include one or more buses. Although specific buses are described and illustrated in embodiments of this application, this application contemplates any suitable bus or interconnect.

[0064] Example 4 In the fourth embodiment of the present invention, in conjunction with the above-described automatic inspection method for static gaps of the digital prototype vehicle (DPA), the present invention provides the following technical solution: a storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the above-described automatic inspection method for static gaps of the digital prototype vehicle (DPA).

[0065] Those skilled in the art will understand that the data in the flowchart, or logic and / or steps otherwise described herein, for example, can be considered as a sequenced data table of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device. For the purposes of this specification, "computer-readable medium" can mean any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device.

[0066] More specific examples of readable media include: electrical connections with one or more wires, portable computer disk drives, random access memory, read-only memory, erasable and editable read-only memory, fiber optic devices, and portable optical disc read-only memory. Additionally, computer-readable media can even be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in computer memory.

[0067] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (FPGAs), field-programmable gate arrays (FPGAs), etc.

[0068] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An automatic method for checking the static gap of a digital prototype vehicle (DPA), characterized in that, The method includes: A component functional position coding standard is established, which specifies the correspondence between each assembly functional position in the vehicle and the component functional position code. According to the part functional location coding standard, assign corresponding part functional location codes to the parts of the vehicle; Based on product structure data carrying the functional location codes of the parts, a digital prototype is constructed; wherein, the digital prototype has a hierarchical structure divided according to the functional location codes of the parts, and each functional location code of the parts is associated with a three-dimensional digital model of the corresponding part under the hierarchical node of the hierarchical structure. A DPA static clearance inspection standard is established. In this standard, a starting part functional position code and a target part functional position code are defined for each static clearance inspection item. The DPA static clearance inspection standard is then converted into computer-recognizable clearance inspection rules. The starting part functional position code and the target part functional position code in these clearance inspection rules correspond to the part functional position codes in the digital prototype vehicle, and are used to indicate the clearance requirements that should be met between a part with the starting part functional position code and a part with the target part functional position code. In the digital prototype management platform, based on the starting part functional position code and the target part functional position code in the gap inspection rules, the three-dimensional digital model of the part under the respective hierarchical node of the starting part functional position code and the target part functional position code is retrieved from the digital prototype. The retrieved three-dimensional digital model of the part is automatically subjected to gap analysis, and it is determined whether the analysis result meets the gap requirements in the gap inspection rules.

2. The automatic inspection method for static gaps of a digital prototype vehicle (DPA) according to claim 1, characterized in that, The part functional location coding standard is established based on the standard system of product structure classification, part functional location and intermediate number, wherein each part functional location code is divided into at least one part basic number.

3. The automatic inspection method for static gaps of a digital prototype vehicle (DPA) according to claim 1, characterized in that, The step of assigning corresponding part function location codes to vehicle parts includes: In the bill of materials system, the part function location code corresponding to the part is inherited to the bill of materials row to which the part is applied.

4. The automatic inspection method for static gaps of a digital prototype vehicle (DPA) according to claim 3, characterized in that, The steps for constructing the digital prototype include: In response to the release of bill of materials data carrying the functional location codes of the parts, the product collaboration platform is driven to automatically construct the digital prototype; wherein, the naming of the hierarchical node containing the functional location codes of each part in the digital prototype includes the corresponding functional location codes of the parts.

5. The automatic inspection method for static gaps of a digital prototype vehicle (DPA) according to claim 4, characterized in that, The product collaboration platform is Teamcenter Engineering.

6. The automatic inspection method for static gaps of a digital prototype vehicle (DPA) according to claim 1, characterized in that, The method further includes: The gap inspection rules are loaded into the gap inspection library module of the digital prototype management platform; Before performing the gap analysis, the digital prototype vehicle model to be inspected is specified in the gap inspection library module.

7. The automatic inspection method for static gaps of a digital prototype vehicle (DPA) according to claim 6, characterized in that, The digital prototype management platform is Teamcenter Vis Mockup, and the gap inspection library module is Clearance DB gap inspection library.

8. An automatic static gap inspection system for a digital prototype vehicle (DPA), characterized in that, The system includes: A module is established to establish a part functional position coding standard, which specifies the correspondence between each assembly functional position in the vehicle and the part functional position code. The assignment module is used to assign corresponding part function location codes to the parts of the vehicle according to the part function location coding standard. A construction module is used to construct a digital prototype based on product structure data carrying the functional location codes of the parts; wherein, the digital prototype has a hierarchical structure divided according to the functional location codes of the parts, and each functional location code of the parts is associated with a three-dimensional digital model of the corresponding part under the hierarchical node of the hierarchical structure. The conversion module is used to establish a DPA static clearance inspection standard. In the DPA static clearance inspection standard, a starting part functional position code and a target part functional position code are defined for each static clearance inspection item. The DPA static clearance inspection standard is then converted into a computer-recognizable clearance inspection rule. The starting part functional position code and the target part functional position code in the clearance inspection rule correspond to the part functional position codes in the digital prototype vehicle, and are used to indicate the clearance requirements that should be met between a part with the starting part functional position code and a part with the target part functional position code. The judgment module is used in the digital prototype vehicle management platform to retrieve the 3D digital models of the parts under the respective hierarchical nodes of the starting part functional position code and the target part functional position code in the gap inspection rules, based on the starting part functional position code and the target part functional position code in the gap inspection rules, automatically perform gap analysis on the retrieved 3D digital models of the parts, and determine whether the analysis results meet the gap requirements in the gap inspection rules.

9. A computer comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the automatic static gap inspection method for the vehicle digital prototype (DPA) as described in any one of claims 1 to 7.

10. A storage medium, characterized in that, The storage medium stores a computer program, which, when executed by a processor, implements the automatic static gap inspection method for a vehicle digital prototype (DPA) as described in any one of claims 1 to 7.

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