Vehicle external dimension measurement method, electronic equipment and storage medium

Abstract

The invention provides a vehicle external dimension measurement method, electronic equipment and a storage medium, and the method comprises the steps: S1, importing or building a vehicle model, and obtaining a cross section passing through a front row R point, a cross section passing through a rear row R point, a cross section passing through a front wheel center, and a cross section passing through a rear wheel center; s2, constructing a plurality of auxiliary measuring surfaces based on the X, Y and Z reference surfaces; s3, establishing a plurality of end points of the vehicle based on the plurality of auxiliary measuring surfaces, the vehicle model, the section passing through the front row R point, the section passing through the rear row R point, the section passing through the front wheel center and the section passing through the rear wheel center; s4, determining the size data of the vehicle model according to the plurality of end points, the wheel center of the front wheel, the wheel center of the rear wheel and the ground line, including at least one of the wheel base, the vehicle length, the vehicle width without the rearview mirror, the vehicle height, the front suspension, the rear suspension, the vehicle width at the wheel center of the front wheel, the vehicle width at the wheel center of the rear wheel, the vehicle width at the R point of the front row, the vehicle width at the R point of the rear row and the vehicle width with the rearview mirror, the accuracy and efficiency of vehicle boundary dimension data measurement are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobiles, and in particular relates to a method for measuring vehicle exterior dimensions, electronic equipment and a storage medium. Background Art

[0002] At present, there are many vehicle dimensions that need to be measured during the development of new models. For example, the vehicle's exterior dimensions include wheelbase, vehicle length, vehicle width, vehicle height, front overhang, and rear overhang. In order to demonstrate space efficiency, the dimensions include the vehicle width at the front wheel center, rear wheel center, front row R point, and rear row R point. In addition, the width of the exterior rearview mirror needs to be considered to ensure the minimum passage for the vehicle to pass through during container transportation and customer use.

[0003] CATIA has a measurement command. Currently, surveyors measure the dimensions of each vehicle according to the definition. However, to determine the dimensions by definition, the corresponding endpoints need to be determined. In order to obtain the corresponding endpoints, the operation steps are often cumbersome, and beginners must master the definition of the measurement dimensions. The measurement work is mostly simple and repetitive mechanical operations, which often takes up too much time for surveyors. In addition, in the early stage of development, the above dimensions are frequently updated. In order to ensure the accuracy of the measured dimensions, surveyors often need to measure the above data repeatedly, which increases the workload, reduces the added value of the work, and wastes manpower. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art of measuring the exterior dimensions of a vehicle by using CATIA, which are complicated operation steps and a large workload of repeated measurements in order to ensure the accuracy of the measurement.

[0005] To solve the above problems, an embodiment of the present invention discloses a method for measuring vehicle exterior dimensions, comprising the following steps:

[0006] S1: Import or establish a vehicle model, the vehicle model includes a vehicle model with a rearview mirror and a vehicle model without a rearview mirror, and the vehicle model with the rearview mirror and the vehicle model without the rearview mirror both include a front wheel center, a rear wheel center, a front row R point, a rear row R point, a ground line, an X reference plane, a Y reference plane and a Z reference plane, and according to the front wheel center, the rear wheel center, the front row R point and the rear row R point, obtain a section passing through the front row R point, a section passing through the rear row R point, a section passing through the front wheel center and a section passing through the rear wheel center.

[0007] S2: Based on the X reference plane, the Y reference plane, and the Z reference plane, a plurality of auxiliary measurement planes are constructed, and the plurality of auxiliary measurement planes are all located outside the vehicle model.

[0008] S3: Establish multiple endpoints of the vehicle based on multiple auxiliary measurement surfaces, a vehicle model, and a section passing through the front row R point, a section passing through the rear row R point, a section passing through the front wheel center, and a section passing through the rear wheel center. The multiple endpoints include the frontmost point, the rearmost point, the highest point, the leftmost point, and the rightmost point.

[0009] S4: Determine the dimension data of the vehicle model according to multiple endpoints, the front wheel center, the rear wheel center and the ground line, the dimension data including at least one of the wheelbase, the vehicle length, the vehicle width excluding the rearview mirror, the vehicle height, the front overhang, the rear overhang, the vehicle width at the front wheel center, the vehicle width at the rear wheel center, the vehicle width at the front row R point, the vehicle width at the rear row R point and the vehicle width including the rearview mirror.

[0010] By adopting the above technical solution, multiple auxiliary measurement surfaces located on the outside of the vehicle model are established based on the X reference plane, the Y reference plane and the Z reference plane. It is only necessary to simply and quickly establish multiple endpoints of the vehicle based on the multiple auxiliary measurement surfaces, the vehicle model and the multiple sections. Then, multiple dimension data of the vehicle model are determined according to the multiple endpoints, the front wheel center, the rear wheel center and the ground line, namely the wheelbase, vehicle length, vehicle width excluding rearview mirrors, vehicle height, front overhang, rear overhang, vehicle width at the front wheel center, vehicle width at the rear wheel center, vehicle width at the front row R point, vehicle width at the rear row R point and vehicle width including rearview mirrors. In this way, the efficiency and accuracy of determining multiple endpoints of the vehicle are improved, and the operation steps of measuring the vehicle's external dimensions are simple, which further improves the measurement accuracy and efficiency of the vehicle's external dimension data, reduces the workload of measurement personnel, and thus saves manpower.

[0011] According to another specific embodiment of the present invention, the vehicle exterior dimension measurement method disclosed in the embodiment of the present invention, in step S2, constructing multiple auxiliary measurement planes includes: constructing a YZ1 plane based on the X reference plane moving a first distance along the positive direction of the X axis, and constructing a YZ2 plane based on the negative direction of the X axis; constructing an XZ1 plane based on the Y reference plane moving a third distance along the positive direction of the Y axis, and constructing an XZ2 plane based on the Y reference plane moving a fourth distance along the negative direction of the Y axis; constructing an XY1 plane based on the Z reference plane moving a fifth distance along the positive direction of the Z axis.

[0012] By adopting the above technical solution, corresponding multiple auxiliary measurement surfaces are constructed based on the X reference plane, the Y reference plane, and the Z reference plane, which improves the efficiency of determining the auxiliary measurement surfaces, thereby improving the efficiency of measuring multiple endpoints required, and further improving the measurement efficiency of vehicle shape dimension data.

[0013] According to another specific embodiment of the present invention, the vehicle exterior dimension measurement method disclosed in the embodiment of the present invention, in step S3, establishing multiple endpoints includes: using a measurement command to measure the minimum distance from the vehicle model with a rearview mirror or the vehicle model without a rearview mirror to the YZ2 plane and establish the frontmost point, measuring the minimum distance from the vehicle model with a rearview mirror or the vehicle model without a rearview mirror to the YZ1 plane and establish the rearmost point, measuring the minimum distance from the vehicle model with a rearview mirror or the vehicle model without a rearview mirror to the XY1 plane and establish the highest point.

[0014] By adopting the above technical scheme, the measurement command can be used according to the YZ1 plane, YZ2 plane, XY1 plane and vehicle model to quickly and accurately determine the rearmost point, the frontmost point and the highest point, thereby improving the efficiency and accuracy of determining the frontmost point, the rearmost point and the highest point, and further improving the measurement efficiency and measurement accuracy of the vehicle's external dimensions.

[0015] According to another specific embodiment of the present invention, the vehicle exterior dimension measurement method disclosed in the embodiment of the present invention, in step S4, determining the wheelbase, vehicle length, front overhang, rear overhang and vehicle height includes: measuring the X-direction distance between the front wheel center and the rear wheel center to obtain the wheelbase; measuring the X-direction distance between the frontmost point and the rearmost point to obtain the vehicle length; measuring the X-direction distance between the frontmost point and the front wheel center to obtain the front overhang; measuring the X-direction distance between the rear wheel center and the rearmost point to obtain the rear overhang; measuring the Z-direction distance between the highest point and the ground line to obtain the vehicle height.

[0016] By adopting the above technical scheme, the wheelbase, vehicle length, front overhang, rear overhang and vehicle height can be determined quickly and accurately based on the determined frontmost point, rearmost point, highest point and the known front wheel center, rear wheel center and ground line, thereby improving the efficiency and accuracy of measuring the wheelbase, vehicle length, front overhang, rear overhang and vehicle height.

[0017] According to another specific embodiment of the present invention, in the vehicle exterior dimension measurement method disclosed in the embodiment of the present invention, in step S3, the leftmost point includes: the first leftmost point, the second leftmost point, the third leftmost point, the fourth leftmost point, the fifth leftmost point and the sixth leftmost point; the rightmost point includes: the first rightmost point, the second rightmost point, the third rightmost point, the fourth rightmost point, the fifth rightmost point and the sixth rightmost point.

[0018] According to another specific embodiment of the present invention, in the vehicle exterior dimension measurement method disclosed in the embodiment of the present invention, in step S3, establishing multiple endpoints further includes:

[0019] Use the measurement command to measure the minimum distance from the vehicle model without a rearview mirror to the XZ1 plane and establish the first rightmost point, or measure the minimum distance from the vehicle model without a rearview mirror to the XZ2 plane and establish the first leftmost point; use the measurement command to measure the minimum distance from the vehicle model with a rearview mirror to the XZ1 plane and establish the second rightmost point, measure the minimum distance from the vehicle model with a rearview mirror to the XZ2 plane and establish the second leftmost point.

[0020] By adopting the above technical solution, the first rightmost point or the first leftmost point can be quickly and accurately determined by using the measurement command according to the XZ1 plane or the XZ2 plane and the vehicle model without the rearview mirror, and the second rightmost point and the second leftmost point can be quickly and accurately determined by using the measurement command according to the XZ1 plane, the XZ2 plane and the vehicle model with the rearview mirror. The efficiency and accuracy of determining the first rightmost point or the first leftmost point, the second rightmost point and the second leftmost point are improved, and the measurement efficiency and accuracy of the vehicle's external dimensions are further improved.

[0021] According to another specific embodiment of the present invention, the vehicle exterior dimension measurement method disclosed in the embodiment of the present invention, in step S4, determining the vehicle width without rearview mirrors and the vehicle width with rearview mirrors includes: obtaining the absolute value of the Y coordinate of the first leftmost point or the absolute value of the Y coordinate of the first rightmost point, and obtaining the vehicle width without the rearview mirror according to the absolute value; measuring the Y distance between the second leftmost point and the second rightmost point to obtain the vehicle width with the rearview mirror.

[0022] By adopting the above technical solution, the vehicle width without the rearview mirror can be quickly and accurately determined based on the determined first leftmost point or the first rightmost point, and the vehicle width with the rearview mirror can be quickly and accurately determined based on the determined second leftmost point and the second rightmost point, thereby improving the measurement efficiency and measurement accuracy of the vehicle width and the vehicle width with the rearview mirror.

[0023] According to another specific embodiment of the present invention, in the vehicle exterior dimension measurement method disclosed in the embodiment of the present invention, in step S3, establishing multiple endpoints further includes:

[0024] Use the measurement command to measure the minimum distance from the section passing through the center of the front wheel to the XZ1 plane and establish the third rightmost point, or measure the minimum distance from the section passing through the center of the front wheel to the XZ2 plane and establish the third leftmost point; use the measurement command to measure the minimum distance from the section passing through the center of the rear wheel to the XZ1 plane and establish the fourth rightmost point, or measure the minimum distance from the section passing through the center of the rear wheel to the XZ2 plane and establish the fourth leftmost point; use the measurement command to measure the minimum distance from the section passing through the front row R points to the XZ1 plane and establish the fifth rightmost point, or measure the minimum distance from the section passing through the front row R points to the XZ2 plane and establish the fifth leftmost point; use the measurement command to measure the minimum distance from the section passing through the rear row R points to the XZ1 plane and establish the sixth rightmost point, or measure the minimum distance from the section passing through the rear row R points to the XZ2 plane and establish the sixth leftmost point.

[0025] By adopting the above technical scheme, the third rightmost point or the third leftmost point, the fourth rightmost point or the fourth leftmost point, the fifth rightmost point or the fifth leftmost point, the sixth rightmost point or the sixth leftmost point can be quickly and accurately determined by using measurement commands according to the XZ1 plane or the XZ2 plane and the section passing through the front wheel center, the section passing through the rear wheel center, the section passing through the front row R point and the section passing through the rear row R point, thereby improving the efficiency and accuracy of determining the corresponding rightmost point or the corresponding leftmost point, and further improving the measurement efficiency and measurement accuracy of the vehicle's external dimensions.

[0026] According to another specific embodiment of the present invention, the vehicle exterior dimension measurement method disclosed in the embodiment of the present invention, in step S4, determining the vehicle width at the front wheel center and the vehicle width at the rear wheel center includes: obtaining the absolute value of the Y coordinate of the third rightmost point or the third leftmost point, and obtaining the vehicle width at the front wheel center according to the absolute value; obtaining the absolute value of the Y coordinate of the fourth rightmost point or the fourth leftmost point, and obtaining the vehicle width at the rear wheel center according to the absolute value.

[0027] By adopting the above technical scheme, the vehicle width at the center of the front wheel can be quickly and accurately determined based on the determined third leftmost point or the third rightmost point, and the vehicle width at the center of the rear wheel can be quickly and accurately determined based on the determined fourth leftmost point and the fourth rightmost point, thereby improving the efficiency and accuracy of determining the vehicle width at the center of the front wheel and the center of the rear wheel.

[0028] According to another specific embodiment of the present invention, the vehicle exterior dimension measurement method disclosed in the embodiment of the present invention, in step S4, determining the vehicle width at the front row R point and the vehicle width at the rear row R point includes: obtaining the absolute value of the Y coordinate of the fifth rightmost point or the fifth leftmost point, and obtaining the vehicle width at the front row R point according to the absolute value; obtaining the absolute value of the Y coordinate of the sixth rightmost point or the sixth leftmost point, and obtaining the vehicle width at the rear row R point according to the absolute value.

[0029] By adopting the above technical scheme, the width of the vehicle at the front row R point can be quickly and accurately determined based on the determined fifth leftmost point or the fifth rightmost point, and the width of the vehicle at the rear row R point can be quickly and accurately determined based on the determined sixth leftmost point and the sixth rightmost point, thereby improving the efficiency and accuracy of determining the width of the vehicle at the front row R point and the rear row R point.

[0030] The present invention also provides an electronic device, comprising a memory, a processor and program instructions stored in the memory and executable by the processor; wherein the processor executes the program instructions to implement the steps of the above-mentioned vehicle exterior dimension measurement method.

[0031] By adopting the above technical solution, the electronic device can implement the steps of the above vehicle exterior dimension measurement method, thereby also being able to achieve the beneficial effects of the vehicle exterior dimension measurement method in any of the above specific implementations.

[0032] The present invention also provides a storage medium storing program instructions executable by a processor to implement the steps of the above-mentioned vehicle exterior dimension measurement method.

[0033] By adopting the above technical solution, the program instructions stored in the storage medium implement the steps of the above vehicle exterior dimension measurement method, thereby achieving the beneficial effects of the vehicle exterior dimension measurement method in any of the above specific implementations.

[0034] The beneficial effects of the present invention are:

[0035] The vehicle external dimension measurement method, electronic device and storage medium provided by the present invention establish multiple auxiliary measurement surfaces located on the outside of the vehicle model based on the X reference plane, the Y reference plane and the Z reference plane, and can simply and quickly establish multiple endpoints of the vehicle based on the multiple auxiliary measurement surfaces, the vehicle model and the multiple sections, and then determine multiple dimension data of the vehicle model according to the multiple endpoints, the front wheel center, the rear wheel center and the ground line, namely the wheelbase, vehicle length, vehicle width excluding rearview mirrors, vehicle height, front overhang, rear overhang, vehicle width at the front wheel center, vehicle width at the rear wheel center, vehicle width at the front row R point, vehicle width at the rear row R point and vehicle width including rearview mirrors. In this way, the efficiency and accuracy of determining multiple endpoints of the vehicle are improved, and the operation steps of measuring the external dimension of the vehicle are simple, which further improves the measurement accuracy and efficiency of the vehicle external dimension data, reduces the workload of the measurement personnel, and thus saves manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a flow chart of a vehicle exterior dimension measurement method provided in Example 1 of the present invention;

[0037] Figure 2The vehicle model and the X reference plane, the Y reference plane and the Z reference plane of the vehicle exterior dimension measurement method provided in Embodiment 1 of the present invention;

[0038] Figure 3 It is a schematic diagram of the definition of the vehicle's length, front overhang, wheelbase, rear overhang, and vehicle height;

[0039] Figure 4 It is a schematic diagram of the definitions of the vehicle width at the center of the front wheel, the vehicle width without rearview mirrors, the vehicle width with rearview mirrors, the vehicle width at the front R point, the vehicle width at the rear R point, and the vehicle width at the center of the rear wheel. DETAILED DESCRIPTION

[0040] Example 1

[0041] In order to solve the problems in the prior art of measuring vehicle exterior dimensions through CATIA, which are complicated in operation steps and require a large amount of repeated measurement to ensure measurement accuracy, the present invention provides a vehicle exterior dimension measurement method, which can improve the efficiency and accuracy of determining multiple endpoints of a vehicle, and the operation steps of measuring vehicle exterior dimensions are simple, thereby improving the measurement accuracy and efficiency of vehicle exterior dimension data.

[0042] Next, refer to Figure 1-Figure 4 , the vehicle exterior dimension measurement method provided by the present invention and its advantages are described in detail.

[0043] In one embodiment of the present invention, Figure 1 As shown, the vehicle exterior dimension measuring method provided by the present invention comprises the following steps:

[0044] S1: Import or establish a vehicle model, the vehicle model includes a vehicle model with a rearview mirror and a vehicle model without a rearview mirror, and the vehicle model with the rearview mirror and the vehicle model without the rearview mirror both include a front wheel center, a rear wheel center, a front row R point, a rear row R point, a ground line, an X reference plane, a Y reference plane and a Z reference plane, and according to the front wheel center, the rear wheel center, the front row R point and the rear row R point, obtain a section passing through the front row R point, a section passing through the rear row R point, a section passing through the front wheel center and a section passing through the rear wheel center.

[0045] It should be noted that vehicle models can be imported or created in CATIA.

[0046] like Figure 2 As shown, the X reference plane, the Y reference plane, and the Z reference plane are respectively a plane passing through the origin and perpendicular to the X axis, a plane passing through the origin and perpendicular to the Y axis, and a plane passing through the origin and perpendicular to the Z axis.

[0047] In CATIA, based on the sectioning command, after selecting the front row R point, the section passing through the front row R point is obtained by using the CATIA sectioning method based on the front row R point; after selecting the rear row R point, the section passing through the rear row R point is obtained by using the CATIA sectioning method based on the rear row R point; after selecting the front wheel hub, the section passing through the front wheel hub is obtained by using the CATIA sectioning method based on the front wheel hub; after selecting the rear wheel hub, the section passing through the rear wheel hub is obtained by using the CATIA sectioning method based on the rear wheel hub, wherein the section passing through the front row R point, the section passing through the rear row R point, the section passing through the front wheel hub, and the section passing through the rear wheel hub are all parallel to the X reference plane.

[0048] It should be noted that in the present embodiment, the cross-section may be the cross-section passing through the front row R point, the cross-section passing through the rear row R point, the cross-section passing through the front wheel center, and the cross-section passing through the rear wheel center of the vehicle model including the rearview mirror; or the cross-section may be the cross-section passing through the front row R point, the cross-section passing through the rear row R point, the cross-section passing through the front wheel center, and the cross-section passing through the rear wheel center of the vehicle model not including the rearview mirror.

[0049] S2: Based on the X reference plane, the Y reference plane, and the Z reference plane, a plurality of auxiliary measurement planes are constructed, and the plurality of auxiliary measurement planes are all located outside the vehicle model.

[0050] In one embodiment of the present invention, constructing multiple auxiliary measurement planes includes: constructing a YZ1 plane based on the X reference plane by moving a first distance in the positive direction of the X axis, and constructing a YZ2 plane by moving a second distance in the negative direction of the X axis; constructing an XZ1 plane based on the Y reference plane by moving a third distance in the positive direction of the Y axis, and constructing an XZ2 plane by moving a fourth distance in the negative direction of the Y axis; and constructing an XY1 plane based on the Z reference plane by moving a fifth distance in the positive direction of the Z axis. Constructing multiple corresponding auxiliary measurement planes based on the X reference plane, the Y reference plane, and the Z reference plane improves the efficiency of determining the auxiliary measurement planes, thereby improving the efficiency of measuring multiple endpoints required, and further improving the efficiency of measuring vehicle shape dimension data.

[0051] Among them, the values ​​of the first distance, the second distance, the third distance, the fourth distance, and the fifth distance can be the same or different, and can be set according to actual conditions to ensure that the YZ1 plane, the YZ2 plane, the XZ1 plane, the XZ2 plane, and the XY1 plane are all located outside the vehicle model. In a specific implementation, the first distance, the second distance, the third distance, the fourth distance, and the fifth distance can all be 5000 mm.

[0052] In one embodiment of the present invention, a YZ plane parallel to the X reference plane can be first established based on the X reference plane, and then a YZ1 plane can be constructed based on the YZ plane moving a certain distance along the positive direction of the X axis, and a YZ2 plane can be constructed by moving a certain distance along the negative direction of the X axis. An XZ plane parallel to the Y reference plane can be established based on the Y reference plane, and then an XZ1 plane can be constructed based on the XZ plane moving a certain distance along the positive direction of the Y axis, and an XZ2 plane can be constructed by moving a certain distance along the negative direction of the Y axis. An XY plane parallel to the Z reference plane can be established based on the Z reference plane, and then an XY1 plane can be constructed based on the XY plane moving a certain distance along the positive direction of the Z axis. The specific moving distance can be set according to the actual situation, and it can be ensured that the YZ1 plane, the YZ2 plane, the XZ1 plane, the XZ2 plane and the XY1 plane are all located outside the vehicle model.

[0053] S3: Establish multiple endpoints of the vehicle based on multiple auxiliary measurement surfaces, a vehicle model, and a section passing through the front row R point, a section passing through the rear row R point, a section passing through the front wheel center, and a section passing through the rear wheel center. The multiple endpoints include the frontmost point, the rearmost point, the highest point, the leftmost point, and the rightmost point.

[0054] In one embodiment of the present invention, establishing multiple endpoints includes: using a measurement command to measure the minimum distance from a vehicle model with a rearview mirror or a vehicle model without a rearview mirror to the YZ2 plane and establish the frontmost point, measuring the minimum distance from a vehicle model with a rearview mirror or a vehicle model without a rearview mirror to the YZ1 plane and establish the rearmost point, and measuring the minimum distance from a vehicle model with a rearview mirror or a vehicle model without a rearview mirror to the XY1 plane and establish the highest point. Using a measurement command based on the YZ1 plane, the YZ2 plane, the XY1 plane and the vehicle model can quickly and accurately determine the rearmost point, the frontmost point and the highest point, thereby improving the efficiency and accuracy of determining the frontmost point, the rearmost point and the highest point, and further improving the measurement efficiency and accuracy of the vehicle's external dimensions.

[0055] In this embodiment, the frontmost point, the rearmost point and the highest point can be established based on a vehicle model with a rearview mirror, or they can be established based on a vehicle model without a rearview mirror. Technicians in this field can make a choice based on actual conditions.

[0056] It should be noted that in CATIA, when selecting the measurement command to measure the minimum distance from the vehicle model to a certain plane, the corresponding point can be established by selecting the method of establishing the point on the vehicle model corresponding to the minimum distance in the measurement tool. In this embodiment, the frontmost point, the rearmost point, the highest point, the leftmost point and the rightmost point are all established in the above manner.

[0057] In one embodiment of the present invention, the leftmost point includes: the first leftmost point, the second leftmost point, the third leftmost point, the fourth leftmost point, the fifth leftmost point and the sixth leftmost point; the rightmost point includes: the first rightmost point, the second rightmost point, the third rightmost point, the fourth rightmost point, the fifth rightmost point and the sixth rightmost point.

[0058] In one embodiment of the present invention, in step S3, establishing multiple endpoints also includes: using a measurement command to measure the minimum distance from the vehicle model without a rearview mirror to the XZ1 plane and establish the first rightmost point, or measuring the minimum distance from the vehicle model without a rearview mirror to the XZ2 plane and establish the first leftmost point.

[0059] Use the measurement command to measure the minimum distance from the vehicle model including the rearview mirror to the XZ1 plane and establish the second rightmost point, and measure the minimum distance from the vehicle model including the rearview mirror to the XZ2 plane and establish the second leftmost point.

[0060] By using measurement commands based on the XZ1 plane or the XZ2 plane and a vehicle model without a rearview mirror, the first rightmost point or the first leftmost point can be quickly and accurately determined. By using measurement commands based on the XZ1 plane and the XZ2 plane and a vehicle model with a rearview mirror, the second rightmost point and the second leftmost point can be quickly and accurately determined. This improves the efficiency and accuracy of determining the corresponding rightmost point and / or the corresponding leftmost point, and further improves the measurement efficiency and accuracy of the vehicle's external dimensions.

[0061] In one embodiment of the present invention, in step S3, establishing multiple endpoints also includes: using a measurement command to measure the minimum distance from the cross-section of the front wheel center to the XZ1 plane and establish the third rightmost point, or measuring the minimum distance from the cross-section of the front wheel center to the XZ2 plane and establish the third leftmost point.

[0062] Use the measurement command to measure the minimum distance from the section of the rear wheel center to the XZ1 plane and establish the fourth rightmost point, or measure the minimum distance from the section of the rear wheel center to the XZ2 plane and establish the fourth leftmost point.

[0063] Use the measurement command to measure the minimum distance from the section through the front row R point to the XZ1 plane and establish the fifth rightmost point, or measure the minimum distance from the section through the front row R point to the XZ2 plane and establish the fifth leftmost point.

[0064] Use the measurement command to measure the minimum distance from the section passing through the rear row R point to the XZ1 plane and establish the sixth rightmost point, or measure the minimum distance from the section passing through the rear row R point to the XZ2 plane and establish the sixth leftmost point.

[0065] In this embodiment, among the rightmost point and the leftmost point, except for the second rightmost point and the second leftmost point, only the corresponding rightmost point or the corresponding leftmost point needs to be established.

[0066] By using the measurement command according to the XZ1 plane or the XZ2 plane and the section passing through the front wheel center, the section passing through the rear wheel center, the section passing through the front row R point and the section passing through the rear row R point, the third rightmost point or the third leftmost point, the fourth rightmost point or the fourth leftmost point, the fifth rightmost point or the fifth leftmost point, the sixth rightmost point or the sixth leftmost point, the efficiency and accuracy of determining the corresponding rightmost point or the corresponding leftmost point are improved, and the measurement efficiency and accuracy of the vehicle's external dimensions are further improved.

[0067] S4: Determine the dimension data of the vehicle model according to multiple endpoints, the front wheel center, the rear wheel center and the ground line, the dimension data including at least one of the wheelbase, the vehicle length, the vehicle width excluding the rearview mirror, the vehicle height, the front overhang, the rear overhang, the vehicle width at the front wheel center, the vehicle width at the rear wheel center, the vehicle width at the front row R point, the vehicle width at the rear row R point and the vehicle width including the rearview mirror.

[0068] Specifically, Figure 2-Figure 4 As shown, the dimensional data of the vehicle shape is defined as follows:

[0069] Wheelbase: the distance from the center of the front wheel to the center of the rear wheel in the X direction; Vehicle length: the distance from the front end of the vehicle to the rear end of the vehicle in the X direction; Vehicle width (excluding exterior mirrors) is the width of the vehicle without rearview mirrors: the distance from the leftmost side of the vehicle to the rightmost side of the vehicle in the Y direction, this distance does not include the left and right exterior mirrors; Vehicle height: the distance from the ground line to the highest point of the vehicle in the normal phase of the ground line; Front overhang: the distance from the front end of the vehicle to the center of the front wheel in the X direction; Rear overhang: the distance from the rear end of the vehicle to the center of the rear wheel in the X direction; Vehicle width at the center of the front wheel: the distance from the front end of the vehicle to the center of the rear wheel through the front wheel The distance from the leftmost side of the vehicle to the rightmost side of the vehicle in the Y direction of the wheel center; Vehicle width at the rear wheel center: the distance from the leftmost side of the vehicle to the rightmost side of the vehicle in the Y direction passing through the rear wheel center; Vehicle width at the front row R point: the distance from the leftmost side of the vehicle to the rightmost side of the vehicle in the Y direction passing through the front row R point; Vehicle width at the rear row R point: the distance from the leftmost side of the vehicle to the rightmost side of the vehicle in the Y direction passing through the rear row R point; Vehicle width (including exterior mirrors) is the vehicle width including mirrors: the distance from the leftmost side of the vehicle to the rightmost side of the vehicle in the Y direction, and this distance includes the left and right exterior mirrors.

[0070] In step S4, the vehicle width at the front wheel center, the vehicle width at the rear wheel center, the vehicle width at the front row R point, and the vehicle width at the rear row R point can be the vehicle width at the front wheel center including the rearview mirror, the vehicle width at the rear wheel center including the rearview mirror, the vehicle width at the front row R point including the rearview mirror, and the vehicle width at the rear row R point including the rearview mirror; they can also be the vehicle width at the front wheel center without the rearview mirror, the vehicle width at the rear wheel center without the rearview mirror, the vehicle width at the front row R point without the rearview mirror, and the vehicle width at the rear row R point without the rearview mirror.

[0071] In one embodiment of the present invention, in step S4, the X-direction distance between the front wheel center and the rear wheel center is measured to obtain the wheelbase. The X-direction distance between the frontmost point and the rearmost point is measured to obtain the vehicle length. The X-direction distance between the frontmost point and the front wheel center is measured to obtain the front overhang. The X-direction distance between the rear wheel center and the rearmost point is measured to obtain the rear overhang. The Z-direction distance between the highest point and the ground line is measured to obtain the vehicle height.

[0072] In one embodiment of the present invention, in step S4, the absolute value of the Y coordinate of the first leftmost point or the absolute value of the Y coordinate of the first rightmost point is obtained, and the absolute value is multiplied by 2, that is, Figure 4 The width of the car (excluding the rearview mirror) is obtained by measuring the Y distance between the second leftmost point and the second rightmost point. Figure 4 The vehicle width in (including rearview mirrors).

[0073] In one embodiment of the present invention, in step S4, the absolute value of the Y coordinate of the third rightmost point or the third leftmost point is obtained, and the absolute value is multiplied by 2 to obtain the vehicle width at the center of the front wheel. The absolute value of the Y coordinate of the fourth rightmost point or the fourth leftmost point is obtained, and the absolute value is multiplied by 2 to obtain the vehicle width at the center of the rear wheel.

[0074] In one embodiment of the present invention, in step S4, the absolute value of the Y coordinate of the fifth rightmost point or the fifth leftmost point is obtained, and the absolute value is multiplied by 2 to obtain the width of the vehicle at the front row point R. The absolute value of the Y coordinate of the sixth rightmost point or the sixth leftmost point is obtained, and the absolute value is multiplied by 2 to obtain the width of the vehicle at the rear row point R.

[0075] By adopting the above technical solution, multiple auxiliary measurement surfaces located on the outside of the vehicle model are established based on the X reference plane, the Y reference plane and the Z reference plane. It is only necessary to simply and quickly establish multiple endpoints of the vehicle based on the multiple auxiliary measurement surfaces, the vehicle model and the multiple sections. Then, multiple dimension data of the vehicle model are determined according to the multiple endpoints, the front wheel center, the rear wheel center and the ground line, namely the wheelbase, vehicle length, vehicle width excluding rearview mirrors, vehicle height, front overhang, rear overhang, vehicle width at the front wheel center, vehicle width at the rear wheel center, vehicle width at the front row R point, vehicle width at the rear row R point and vehicle width including rearview mirrors. In this way, the efficiency and accuracy of determining multiple endpoints of the vehicle are improved, and the operation steps of measuring the vehicle's external dimensions are simple, which further improves the measurement accuracy and efficiency of the vehicle's external dimension data, reduces the workload of measurement personnel, and thus saves manpower.

[0076] Based on the original command of CATIA, it takes 90 seconds for a mature engineer to measure the data of a car's external dimensions. At present, it is necessary to measure 11 data including wheelbase, car length, car width without rearview mirror, car height, front overhang, rear overhang, car width at the center of the front wheel, car width at the center of the rear wheel, car width at the front row R point, car width at the rear row R point and car width with rearview mirror. It is estimated to take 16.5 minutes, and the operation steps are many and complicated, and errors are prone to occur. The method for measuring the external dimensions of the vehicle provided by the present invention is unified, and the consistency of the values ​​measured by each engineer can be achieved, thereby improving the measurement efficiency and accuracy of the external dimensions of the vehicle. According to the above measurement method, it is also possible to directly measure and output the corresponding data according to the input content through the secondary development of CATIA, and accurately complete the measurement and list it into a dimension table, so as to achieve the above-mentioned dimension data of measuring the appearance of the car in 25 seconds.

[0077] Example 2

[0078] The present invention also provides an electronic device, comprising a memory, a processor and program instructions stored in the memory and executable by the processor; wherein the processor executes the program instructions to implement the steps of the vehicle exterior dimension measurement method of the above-mentioned embodiment 1.

[0079] By adopting the above technical solution, the electronic device can implement the steps of the vehicle exterior dimension measurement method of the above embodiment 1, thereby also being able to achieve the beneficial effects of the vehicle exterior dimension measurement method in any specific implementation manner in the above embodiment 1, namely, improving the measurement accuracy and efficiency of the vehicle exterior dimension data.

[0080] Example 3

[0081] The present invention also provides a storage medium storing program instructions executable by a processor to implement the steps of the vehicle exterior dimension measurement method of the first embodiment.

[0082] By adopting the above technical solution, the program instructions stored in the storage medium implement the steps of the vehicle exterior dimension measurement method of the above embodiment 1, thereby also being able to achieve the beneficial effects of the vehicle exterior dimension measurement method in any specific implementation of the above embodiment 1, that is, improving the measurement accuracy and efficiency of the vehicle exterior dimension data.

[0083] The above is an explanation of the implementation mode of the present invention by specific specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation mode. On the contrary, the purpose of introducing the invention in conjunction with the implementation mode is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, many specific details will be included in the above description. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the key points of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0084] It should be noted that in this specification, similar reference numerals and letters denote similar items in the above-mentioned drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0085] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0086] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above contents are further detailed descriptions of the present invention in conjunction with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A method for measuring vehicle exterior dimensions, characterized in that: The following steps are involved: S1: import or establish a vehicle model, wherein the vehicle model includes a vehicle model with a rearview mirror and a vehicle model without a rearview mirror, and both the vehicle model with a rearview mirror and the vehicle model without a rearview mirror include a front wheel center, a rear wheel center, a front row R point, a rear row R point, a ground line, an X reference plane, a Y reference plane, and a Z reference plane, and obtain a section passing through the front row R point, a section passing through the rear row R point, a section passing through the front wheel center, and a section passing through the rear wheel center according to the front wheel center, the rear wheel center, the front row R point, and the rear row R point; S2: constructing a plurality of auxiliary measurement surfaces based on the X reference plane, the Y reference plane, and the Z reference plane, wherein the plurality of auxiliary measurement surfaces are all located outside the vehicle model; S3: establishing multiple endpoints of the vehicle based on the multiple auxiliary measurement surfaces, the vehicle model, and the section passing through the front row R point, the section passing through the rear row R point, the section passing through the front wheel center, and the section passing through the rear wheel center, wherein the multiple endpoints include the frontmost point, the rearmost point, the highest point, the leftmost point, and the rightmost point; S4: Determine the dimension data of the vehicle model according to the multiple endpoints, the front wheel center, the rear wheel center and the ground line, the dimension data including at least one of the wheelbase, vehicle length, vehicle width excluding rearview mirrors, vehicle height, front overhang, rear overhang, vehicle width at the front wheel center, vehicle width at the rear wheel center, vehicle width at the front row R point, vehicle width at the rear row R point and vehicle width including rearview mirrors.

2. The vehicle exterior dimension measuring method according to claim 1, characterized in that: In the step S2, constructing the plurality of auxiliary measurement surfaces comprises: Based on the X reference plane, a YZ1 plane is constructed by moving a first distance in the positive direction of the X axis, and a YZ2 plane is constructed by moving a second distance in the negative direction of the X axis; Based on the Y reference plane, an XZ1 plane is constructed by moving the Y reference plane by a third distance in the positive direction of the Y axis, and an XZ2 plane is constructed by moving the Y reference plane by a fourth distance in the negative direction of the Y axis; The XY1 plane is constructed based on the Z reference plane being moved a fifth distance in the positive direction of the Z axis.

3. The vehicle exterior dimension measuring method according to claim 2, characterized in that: In the step S3, establishing the multiple endpoints includes: Use measurement commands to measure the minimum distance from the vehicle model with rearview mirrors or the vehicle model without rearview mirrors to the YZ2 plane and establish the frontmost point, measure the minimum distance from the vehicle model with rearview mirrors or the vehicle model without rearview mirrors to the YZ1 plane and establish the rearmost point, measure the minimum distance from the vehicle model with rearview mirrors or the vehicle model without rearview mirrors to the XY1 plane and establish the highest point.

4. The vehicle exterior dimension measuring method according to claim 3, characterized in that: In the step S4, determining the wheelbase, the vehicle length, the front overhang, the rear overhang and the vehicle height includes: Measuring the X-direction distance between the front wheel center and the rear wheel center to obtain the wheelbase; Measuring the X-direction distance between the frontmost point and the rearmost point to obtain the vehicle length; Measuring the X-direction distance between the frontmost point and the front wheel center to obtain the front overhang; Measuring the X-direction distance between the rear wheel center and the rearmost point to obtain the rear overhang; The vehicle height is obtained by measuring the Z-direction distance between the highest point and the ground line.

5. The vehicle exterior dimension measurement method according to any one of claims 2 to 4, characterized in that: In step S3, the leftmost point includes: a first leftmost point, a second leftmost point, a third leftmost point, a fourth leftmost point, a fifth leftmost point and a sixth leftmost point; The rightmost points include: a first rightmost point, a second rightmost point, a third rightmost point, a fourth rightmost point, a fifth rightmost point, and a sixth rightmost point.

6. The vehicle exterior dimension measuring method according to claim 5, characterized in that: In step S3, establishing the multiple endpoints further includes: Using a measurement command to measure the minimum distance from the vehicle model without a rearview mirror to the XZ1 plane and establish the first rightmost point, or to measure the minimum distance from the vehicle model without a rearview mirror to the XZ2 plane and establish the first leftmost point; A measurement command is used to measure the minimum distance from the vehicle model with the rearview mirror to the XZ1 plane and establish the second rightmost point, and to measure the minimum distance from the vehicle model with the rearview mirror to the XZ2 plane and establish the second leftmost point.

7. The vehicle exterior dimension measuring method according to claim 6, characterized in that: In the step S4, determining the vehicle width without the rearview mirror and the vehicle width with the rearview mirror includes: Obtaining the absolute value of the Y-coordinate of the first leftmost point or the absolute value of the Y-coordinate of the first rightmost point, and obtaining the width of the vehicle excluding the rearview mirror according to the absolute value; The vehicle width including the rearview mirror is obtained by measuring the Y distance between the second leftmost point and the second rightmost point.

8. The vehicle exterior dimension measuring method according to claim 5, characterized in that: In step S3, establishing the multiple endpoints further includes: Using a measurement command to measure the minimum distance from the section passing through the center of the front wheel to the XZ1 plane and establish the third rightmost point, or to measure the minimum distance from the section passing through the center of the front wheel to the XZ2 plane and establish the third leftmost point; Using a measurement command to measure the minimum distance from the section passing through the rear wheel center to the XZ1 plane and establish the fourth rightmost point, or to measure the minimum distance from the section passing through the rear wheel center to the XZ2 plane and establish the fourth leftmost point; Use a measurement command to measure the minimum distance from the section passing through the front row R point to the XZ1 plane and establish the fifth rightmost point, or measure the minimum distance from the section passing through the front row R point to the XZ2 plane and establish the fifth leftmost point; Use the measurement command to measure the minimum distance from the section passing through the rear row of R points to the XZ1 plane and establish the sixth rightmost point, or measure the minimum distance from the section passing through the rear row of R points to the XZ2 plane and establish the sixth leftmost point.

9. The vehicle exterior dimension measuring method according to claim 8, characterized in that: In the step S4, determining the vehicle width at the front wheel center and the vehicle width at the rear wheel center includes: Obtaining an absolute value of a Y-coordinate of the third rightmost point or the third leftmost point, and obtaining a vehicle width at the center of the front wheel according to the absolute value; The absolute value of the Y coordinate of the fourth rightmost point or the fourth leftmost point is obtained, and the vehicle width at the rear wheel center is obtained according to the absolute value.

10. The vehicle exterior dimension measuring method according to claim 8, characterized in that: In the step S4, determining the vehicle width at the front row point R and the vehicle width at the rear row point R includes: Obtaining the absolute value of the Y coordinate of the fifth rightmost point or the fifth leftmost point, and obtaining the vehicle width at the front row point R according to the absolute value; The absolute value of the Y coordinate of the sixth rightmost point or the sixth leftmost point is obtained, and the width of the vehicle at the rear row point R is obtained according to the absolute value.

11. An electronic device, characterized in that: comprising a memory, a processor and program instructions stored in the memory and executable by the processor; Wherein, the processor executes the program instructions to implement the steps of the vehicle exterior dimension measurement method according to any one of claims 1 to 10.

12. A storage medium, characterized in that: It stores program instructions executable by a processor to implement the steps of the vehicle exterior dimension measurement method described in any one of claims 1 to 10.

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