Method and device for determining front windshield VIN code area

Abstract

The present invention discloses a method and device for determining a front windshield VIN code area, which is applied to the field of vehicle design. The method comprises: creating a general data template based on CATIA software; defining a three-dimensional plane based on the general data template and establishing a part coordinate system of the front windshield position, the part coordinate system is consistent with the whole vehicle coordinate system, and the front windshield position includes the front windshield glass and its associated part geometric bodies; in the part coordinate system of the front windshield position, constructing an ergonomic model of the car driver based on the general data template, and determining the upper boundary line of the front windshield VIN code area based on the constructed ergonomic model; determining the lower boundary line of the front windshield VIN code area according to the dimension chain of the front windshield glass and its associated part geometric bodies, and defining the front windshield VIN code area with the upper boundary line and the lower boundary line. The present invention improves the work efficiency of determining the engineering boundary of the front windshield VIN code area.

Description

Technical Field

[0001] The present invention relates to the field of vehicle design, and in particular to a method and device for determining a front windshield VIN code area. Background Art

[0002] VIN (Vehicle Identification Number) is also called the vehicle frame number. It is a unique identifier used to correctly identify the vehicle model and is very important for correct diagnosis and repair. Generally, a VIN code sticker is affixed to the lower left corner of the car's front windshield.

[0003] Currently, when the factory assembles the VIN code on the front windshield, the front sheet metal will be exposed, and there will also be problems with the pasting being offset and rotated. Summary of the invention

[0004] Based on the above technical problems in the prior art, the embodiments of the present invention provide a method and device for determining the VIN code area of ​​a front windshield, so as to make the location of the VIN code pasting more accurate.

[0005] In a first aspect, an embodiment of the present invention provides a method for determining a front windshield VIN code area, comprising:

[0006] Create common data templates based on CATIA software;

[0007] Based on the general data template, a three-dimensional plane is defined and a part coordinate system of a front windshield position is established, wherein the part coordinate system is consistent with the vehicle coordinate system, and the front windshield position includes a front windshield glass and its associated part geometric bodies;

[0008] In the part coordinate system of the front windshield position, constructing an ergonomic model of the car driver based on the universal data template, and determining the upper boundary line of the front windshield VIN code area based on the constructed ergonomic model;

[0009] According to the dimension chain of the front windshield and its associated part geometric bodies, the lower boundary line of the front windshield VIN code area is determined, and the front windshield VIN code area is defined by the upper boundary line and the lower boundary line.

[0010] Optionally, after defining the front windshield VIN code area with the upper boundary line and the lower boundary line, the method further includes:

[0011] defining a VIN code font of a VIN code sticker, wherein the VIN code sticker is used to be pasted on the VIN code area of ​​the front windshield;

[0012] Determine the size of the VIN code sticker according to the upper boundary line and the lower boundary line of the front windshield VIN code area;

[0013] The VIN code sticker includes a VIN code display area of ​​the same size as the front windshield VIN code area, and a blank area surrounding the VIN code display area. The color of the blank area is the same as the black border area of ​​the front windshield, so that when the VIN code sticker is affixed to the front windshield, the exposed front panel of the vehicle body can be covered.

[0014] Optionally, the length and width dimensions of the VIN code sticker are 90*20 mm, wherein the length is along the width of the vehicle body.

[0015] Optionally, it also includes: using a line limiting method to form a limit mark in the front windshield VIN code area defined by the upper boundary line and the lower boundary line, and the limit mark is used to limit the horizontal and vertical references when the VIN code sticker is pasted in the front windshield VIN code area.

[0016] Optionally, the general data template created by the CATIA software includes the following multiple different data files:

[0017] Base modules, input modules, output modules, working modules, annotation sets, and measurement data files created for the front windshield location.

[0018] Optionally, defining a three-dimensional plane based on the general data template and establishing a part coordinate system of the front windshield position includes:

[0019] In the basic module, three orthogonal planes are created, namely, the XY plane, the YZ plane and the XZ plane;

[0020] generating a new part coordinate data set in the basic module, wherein the new part coordinate data set includes coordinate elements of a plurality of different surface calibration points at the front windshield position;

[0021] The coordinate elements in the new part coordinate data set are processed in the same element type as the coordinate elements in the pre-established vehicle coordinate set to obtain a coordinate system transformation matrix;

[0022] According to the coordinate system transformation matrix and the element type identity inverse processing process, the part coordinate system of the front windshield position consistent with the whole vehicle coordinate system is obtained.

[0023] Optionally, the constructing of the ergonomic model of the automobile driver based on the universal data template in the part coordinate system at the front windshield position includes:

[0024] The input module obtains driving position dimension data and seat height sample data of the driver population required for building the ergonomic model;

[0025] Determine the coordinates of the reference points for building the ergonomic model;

[0026] The working module creates a three-dimensional human body model of the driver group based on the reference point position coordinates, the driving position size data and the seat height sample data of the driver group, and creates an eye ellipse model of the driver group based on the three-dimensional human body model.

[0027] Optionally, determining the upper boundary line of the front windshield VIN code area based on the constructed ergonomic model includes:

[0028] Determining a lower tangent line of the eyellipse model;

[0029] Determining the black glass border of the front windshield according to the vehicle model;

[0030] The line formed by the lower tangent line and the black edge of the glass is defined as the upper boundary line of the front windshield VIN code area.

[0031] Optionally, determining the lower boundary line of the front windshield VIN code area according to the dimension chain of the front windshield and its associated part geometric bodies includes:

[0032] The dimension chain is formed according to the size of the front windshield and the size of each part geometric body overlapped with the front windshield, wherein the each part geometric body overlapped with the front windshield includes the front panel of the vehicle body, the instrument panel and the ventilation cover;

[0033] According to the dimension chain, a lower boundary line of the front windshield VIN code area is determined.

[0034] In a second aspect, an embodiment of the present invention provides a computer device, comprising: a memory, a processor, and a program stored in the memory and executable on the processor, wherein when the processor executes the program, the method described in any one of the embodiments of the first aspect is implemented.

[0035] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0036] The embodiment of the present invention constructs an ergonomic model based on CATIA software, and determines the upper boundary line of the front windshield VIN code area based on the constructed ergonomic model, and determines the upper boundary line of the front windshield VIN code area based on the dimension chain of the front windshield glass and its associated part geometries, thereby reducing the number of iterations of changes, thereby improving the work efficiency of determining the engineering boundary of the front windshield VIN code area.

[0037] Furthermore, by changing the size of the VIN code sticker, the problem of the white sheet metal of the front windshield VIN code being exposed is solved, thereby improving the aesthetics of the front windshield VIN code.

[0038] Furthermore, by forming a limit mark in the defined front windshield VIN code area, problems such as misalignment and rotation during factory assembly and pasting can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 Flow chart of a method for determining a front windshield VIN code area in an embodiment of the present invention;

[0041] Figure 2 Schematic diagram of a three-dimensional human body model and an eye ellipse model in an embodiment of the present invention;

[0042] Figure 3 The dimension chain of the front windshield and its related parts in the embodiment of the present invention;

[0043] Figure 4A A schematic diagram of the dimensions of a VIN code sticker in the prior art;

[0044] Figure 4B A schematic diagram of the dimensions of a VIN code sticker in an embodiment of the present invention;

[0045] Figure 5 Schematic diagram of the limit mark of the VIN code area of ​​the front windshield in an embodiment of the present invention. DETAILED DESCRIPTION

[0046] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0047] First of all, the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0048] refer to Figure 1 As shown, an embodiment of the present invention provides a method for determining a windshield VIN code area, comprising the following steps:

[0049] S101. Create a general data template based on CATIA software.

[0050] Specifically, multiple different data files are created in CATIA PART format using CATIA software, including the following multiple different data files: basic module (BASIC), input module (INPUT), output module (OUTPUT), work module (WORK), annotation set and measurement data file for creating the front windshield position.

[0051] S102. Define a three-dimensional plane based on a common data template and establish a part coordinate system of the front windshield position, wherein the part coordinate system of the front windshield position is consistent with the whole vehicle coordinate system, and the front windshield position includes the front windshield glass and its associated part geometries.

[0052] Specifically, refer to Figure 3 As shown, the part geometries associated with the front windshield include various part geometries overlapped with the front windshield, such as: the front panel of the car, the IP (interior instrument panel) of the car, the ventilation cover, the wiper shaft, etc.

[0053] In step S102, the three-dimensional plane defined based on the general data template specifically includes: three orthogonal planes created in the basic module: an XY plane, a YZ plane, and an XZ plane.

[0054] In step S102, a part coordinate system at the front windshield position is established based on a common data template, specifically including: generating a new part coordinate data set in the basic module, the new part coordinate data set including coordinate elements of multiple different surface calibration points at the front windshield position; performing element type identity processing on the coordinate elements in the new part coordinate data set and the coordinate elements in the pre-established vehicle coordinate set to obtain a coordinate system transformation matrix; according to the inverse processing of the coordinate system transformation matrix and element type identity, the part coordinate system at the front windshield position is obtained to be consistent with the vehicle coordinate system.

[0055] refer to Figure 3 As shown, a transparent window is opened in the black border area at the lower right corner of the front windshield. The front windshield VIN code area is the area on the front panel of the vehicle body facing the transparent window on the front windshield, so that the VIN code on the VIN code sticker pasted in the front windshield VIN code area can be seen through the transparent window of the front windshield. Or the windshield VIN code area is the black border area at the lower right corner of the front windshield. In order to ensure that the VIN code on the VIN code sticker pasted in the front windshield VIN code area is visible. It is necessary to determine the upper and lower boundary lines of the front windshield VIN code area to determine the front windshield VIN code area that can be used to paste the VIN code sticker.

[0056] S103, constructing an ergonomic model of the car driver based on the universal data template in the part coordinate system at the front windshield position, and determining an upper boundary line of the front windshield VIN code area based on the constructed ergonomic model.

[0057] S1031: The input module obtains the driving position dimension data and the seat height sample data of the driver group required for constructing the ergonomic model.

[0058] Specifically, the seat height sample data of the driver population refers to the seat height sample data collected from a group of people with a certain ratio of males and females within a certain target height range (for example, heights in the range of 150 cm to 190 cm).

[0059] S1032: The input module determines the position coordinates of the reference points for constructing the ergonomic model.

[0060] It should be noted that the reference Figure 2 As shown, the reference point position coordinates refer to the connection center point between the human torso and the thigh (i.e., the H point coordinates). On the vehicle body layout diagram, the H point is the reference point for constructing an ergonomic model based on the human sitting posture.

[0061] S1033: The working module creates a three-dimensional human body model of the driver group in the part coordinate system at the front windshield position based on the reference point position coordinates, the driving position size data and the seat height sample data of the driver group, and creates an eye ellipse model of the driver group based on the three-dimensional human body model. The created three-dimensional human body model and eye ellipse model are referenced to Figure 2 shown.

[0062] After the eyellipse model is created, step S1034 is executed: determining the lower tangent line of the eyellipse model. Specifically, the lower tangent line reference determined by the eyellipse model is Figure 2 shown.

[0063] S1035: Determine the black glass border of the front windshield according to the vehicle model.

[0064] Different models have their own lower vision lines defined, and the black edge of the front windshield is determined according to the lower vision line defined by the model, such as Figure 2 As shown, the black edge of the glass of the front windshield can be determined according to the lower visual line defined by the vehicle model. The black edge of the glass is the boundary edge between the black edge area and the transparent area of ​​the front windshield.

[0065] S1036: A line formed by the lower tangent line and the black edge of the glass is defined as an upper boundary line of the front windshield VIN code area.

[0066] It should be noted that the upper boundary line of the VIN code area on the front windshield is the uppermost position where the VIN code is pasted, that is, the VIN code needs to be below this upper boundary line and not exceed the upper boundary line, so that the VIN code cannot be seen by the driver and will not affect the driver's line of sight.

[0067] S104, determining a lower boundary line of the front windshield VIN code area according to a dimension chain of the front windshield and its associated part geometric bodies, and defining the front windshield VIN code area with the upper boundary line and the lower boundary line.

[0068] The upper boundary line of the front windshield VIN code area is the lowest position for the VIN code to be pasted, that is, the VIN code needs to be above this upper boundary line and not exceed the lower boundary line.

[0069] refer to Figure 3 As shown, the dimension chain is formed according to the dimensions of the front windshield and the dimensions of each part geometric body overlapping with the front windshield; and the lower boundary line of the front windshield VIN code area is determined according to the dimension chain.

[0070] refer to Figure 3 As shown, the size of the front windshield includes the size of the front windshield overlap area. The front windshield overlap area is the glue-coated and sealed area on the front windshield, because the VIN code cannot be pasted on the front panel metal facing this part of the area.

[0071] Specifically, the lower boundary line of the front windshield VIN code area is determined in the section defined along the length direction of the vehicle body to prevent the VIN code pasted in the front windshield VIN code area from affecting the various parts overlapped with the front windshield glass. Therefore, the lower boundary line of the front windshield VIN code area needs to be determined according to the dimension chain.

[0072] After determining the upper and lower boundary lines of the front windshield VIN code area, you also need to determine the font of the VIN code and the size of the VIN code sticker to be pasted in the front windshield VIN code area, as follows:

[0073] A VIN code font of a VIN code sticker is defined, wherein the VIN code sticker is used to be pasted in the VIN code area of ​​the front windshield; and a size of the VIN code sticker is determined according to an upper boundary line and a lower boundary line of the VIN code area of ​​the front windshield.

[0074] Among them, reference Figure 4B As shown, the VIN code sticker includes a VIN code display area of ​​the same size as the front windshield VIN code area, and a blank area outside the VIN code display area, the color of the blank area is the same as the color of the black border area of ​​the front windshield, so that the VIN code sticker can cover the exposed front panel of the vehicle body when it is affixed to the front windshield.

[0075] Specifically, the background color of the VIN code display area is the same as the color of the blank area, which is the same as the color of the black border area of ​​the front windshield. On the premise of meeting regulatory requirements, the font of the VIN code and the size of the VIN code sticker are defined according to the specifications of each company to prevent the problem of the front windshield VIN being exposed on the car body.

[0076] In the specific implementation process, the human body is normally standing next to the front tire of the car as the reference for verification, and the gap between the front sheet metal and the front windshield is 5mm as an example. Figure 4B As shown, the length and width of the VIN code display area in the VIN code sticker are 90*10mm, and the total length and width of the VIN code sticker is 90*20mm, where the length is along the width of the vehicle body. The larger the gap between the front sheet metal and the front windshield, the easier it is to show white, so the total length and width of the VIN code sticker is designed based on the requirement that the white sheet metal is invisible to the human field of vision.

[0077] refer to Figure 4A and Figure 4B By comparison, the size of the VIN code sticker generally used by existing models is 90*10mm. Based on the human-machine vision verification, it is found that the size of this VIN code sticker has the problem of leaking the white front sheet metal on the body, affecting the appearance. Therefore, the length and width of the VIN code sticker are changed to 90*20mm, and the background color of the sticker is used to cover the white sheet metal leaking through the transparent window on the body.

[0078] For further reference, Figure 5 As shown, a line limit method is adopted to form a limit mark in the front windshield VIN code area defined by the upper boundary line and the lower boundary line. The limit mark is used to define the horizontal and vertical references when pasting the VIN code sticker in the front windshield VIN code area, so as to avoid the left, right, upper and lower deviation and rotation problems when pasting the VIN code sticker in the front windshield VIN code area, thereby ensuring the accurate pasting of the VIN code sticker. According to human operating habits and operating comfort, whether the VIN code sticker is pasted in the front of the car or in the passenger compartment, it can be ensured that the VIN code sticker is pasted accurately in the front windshield VIN code area.

[0079] Based on the same inventive concept, an embodiment of the present invention provides a computer device, including: a memory, a processor, and a program stored in the memory and executable on the processor. When the processor executes the program, the aforementioned windshield VIN code area determination method embodiment is implemented. Therefore, more implementation details can refer to the aforementioned method embodiment and will not be repeated here.

[0080] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0081] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for determining a front windshield VIN code area, characterized in that: include: Create common data templates based on CATIA software; Based on the general data template, a three-dimensional plane is defined and a part coordinate system of a front windshield position is established, wherein the part coordinate system is consistent with the vehicle coordinate system, and the front windshield position includes a front windshield glass and its associated part geometric bodies; In the part coordinate system at the front windshield position, the ergonomic model of the car driver is constructed based on the universal data template, including: obtaining the driving position dimension data and the seat height sample data of the driver group required for the ergonomic model construction based on the input module of the universal data template; determining the reference point position coordinates for the ergonomic model construction; based on the working module of the universal data template, creating a three-dimensional human body model of the driver group based on the reference point position coordinates, the driving position dimension data and the seat height sample data of the driver group, and creating an eye ellipse model of the driver group based on the three-dimensional human body model; Determining an upper boundary line of a front windshield VIN code area based on the constructed ergonomic model; According to the dimension chain of the front windshield and its associated part geometric bodies, the lower boundary line of the front windshield VIN code area is determined, and the front windshield VIN code area is defined by the upper boundary line and the lower boundary line.

2. The method according to claim 1, characterized in that After defining the front windshield VIN code area with the upper boundary line and the lower boundary line, the method further includes: defining a VIN code font of a VIN code sticker, wherein the VIN code sticker is used to be pasted on the VIN code area of ​​the front windshield; Determine the size of the VIN code sticker according to the upper boundary line and the lower boundary line of the front windshield VIN code area; The VIN code sticker includes a VIN code display area of ​​the same size as the front windshield VIN code area, and a blank area surrounding the VIN code display area. The color of the blank area is the same as the black border area of ​​the front windshield, so that when the VIN code sticker is affixed to the front windshield, the exposed front panel of the vehicle body can be covered.

3. The method according to claim 2, characterized in that The length and width dimensions of the VIN code sticker are 90*20 mm, wherein the length is along the width of the vehicle body.

4. The method according to claim 2, characterized in that Also includes: A line limit method is adopted to form a limit mark in the front windshield VIN code area defined by the upper boundary line and the lower boundary line. The limit mark is used to limit the horizontal and vertical references when the VIN code sticker is pasted in the front windshield VIN code area.

5. The method according to any one of claims 1 to 4, characterized in that: The general data template created by the CATIA software includes the following multiple different data files: Base modules, input modules, output modules, working modules, annotation sets, and measurement data files created for the front windshield location.

6. The method according to claim 5, characterized in that The method of defining a three-dimensional plane based on the universal data template and establishing a part coordinate system at the front windshield position includes: In the basic module, three orthogonal planes are created, namely, the XY plane, the YZ plane and the XZ plane; generating a new part coordinate data set in the basic module, wherein the new part coordinate data set includes coordinate elements of a plurality of different surface calibration points at the front windshield position; The coordinate elements in the new part coordinate data set are processed in the same element type as the coordinate elements in the pre-established vehicle coordinate set to obtain a coordinate system transformation matrix; According to the coordinate system transformation matrix and the element type identity inverse processing process, the part coordinate system of the front windshield position consistent with the whole vehicle coordinate system is obtained.

7. The method according to claim 1, characterized in that The determining of the upper boundary line of the front windshield VIN code area based on the constructed ergonomic model includes: Determining a lower tangent line of the eyellipse model; Determining the black glass border of the front windshield according to the vehicle model; The line formed by the lower tangent line and the black edge of the glass is defined as the upper boundary line of the front windshield VIN code area.

8. The method according to claim 1, characterized in that Determining the lower boundary line of the front windshield VIN code area according to the dimension chain of the front windshield and its associated part geometric bodies includes: The dimension chain is formed according to the size of the front windshield and the size of each part geometric body overlapped with the front windshield, wherein the each part geometric body overlapped with the front windshield includes the front panel of the vehicle body, the instrument panel and the ventilation cover; According to the dimension chain, a lower boundary line of the front windshield VIN code area is determined.

9. A computer device comprising: A memory, a processor, and a program stored in the memory and executable on the processor, wherein the processor implements any of the methods described in claims 1-8 when executing the program.

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