CN116107571A - Car driver hand extension and interface parameterization construction method based on CATIA software - Google Patents
Car driver hand extension and interface parameterization construction method based on CATIA software Download PDFInfo
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- CN116107571A CN116107571A CN202310262652.1A CN202310262652A CN116107571A CN 116107571 A CN116107571 A CN 116107571A CN 202310262652 A CN202310262652 A CN 202310262652A CN 116107571 A CN116107571 A CN 116107571A
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- G06F8/38—Creation or generation of source code for implementing user interfaces
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Abstract
The invention discloses a saloon car driver hand extension and interface parameterization construction method based on CATIA software, which relates to the technical field of automobile design, and comprises the following steps: establishing a standard module parameterized driving structure tree in CATIA software; inputting environmental parameters of a certain car and sitting posture parameters of a driver; calculating a whole vehicle arrangement factor according to car environment parameters and driver sitting posture parameters, establishing a reference X plane and a whole vehicle coordinate system, and determining a reference origin; establishing a hand extension and interface boundary point according to the reference origin; connecting boundary points to form lines and filling the lines into surfaces to finally establish hand extension and interfaces. The parameter values are directly input into the structural tree, so that the hand extension and interface of drivers of different vehicle types can be generated, and the precision and efficiency of the automobile design are improved.
Description
Technical Field
The invention relates to the technical field of automobile design, in particular to a method for constructing hand extension and interface parameterization of a car driver based on CATIA software.
Background
In the initial stage of interior and exterior decoration modeling of automobile development, modeling data need to be checked to determine engineering conformity, and in the process of interior decoration modeling, whether components such as a switch, a button, a knob, a touch screen and the like are in a range which can be reached by a driver or not needs to be checked, so that the driver can reach the components by stretching hands when driving, and the safety during driving is guaranteed to the greatest extent.
The traditional checking mode of vehicle model parameters refers to SAE J287 regulations issued by the American society of automotive Engineers, hundreds of reference points are constructed and connected to build a driver hand extension and interface of the vehicle model, and checking is carried out by combining modeling data.
Disclosure of Invention
The invention aims to provide a CATIA software-based sedan driver hand extension and interface parameterization construction method, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a saloon car driver hand extension and interface parameterization construction method based on CATIA software comprises the following steps:
s100, establishing a standard module parameterized driving structure tree;
s200, inputting automobile environment parameters and driver sitting posture parameters;
s300, calculating a whole vehicle arrangement factor, and establishing a whole vehicle reference coordinate system and a reference origin;
s400, establishing boundary points of the hand extension and the interface through formula selection;
s500, establishing a hand extension and an interface.
Preferably, in step S200, the automotive environment parameters include:
the X-coordinate of the steering wheel center point, the Y-coordinate of the steering wheel center point, and the Z-coordinate of the steering wheel center point.
Preferably, in step S200, the driver sitting posture parameters include:
the X coordinate of the driver H point, the Y coordinate of the driver H point and the Z coordinate of the driver H point;
the X coordinate of the driver's foot point, the Y coordinate of the driver's foot point and the Z coordinate of the driver's foot point.
Preferably, in step S300, the whole vehicle arrangement factor G is determined by substituting a plurality of vehicle internal dimensions into a formula together, wherein the vehicle internal dimensions include:
seat height = driver H point Z coordinate-driver foot point Z coordinate;
steering wheel center point height = steering wheel center point Z coordinate-driver foot point Z coordinate.
Preferably, in step S300, the whole vehicle reference coordinate system is formed by intersecting two X-plane, Y-plane and Z-plane, and the determining step of the whole vehicle reference coordinate system is as follows:
s301, calculating a reference HR point;
s302, substituting the HR points into a calculation formula to judge;
s303, determining an X plane according to the result, wherein if the result is greater than or equal to zero, the vertical plane passing through the X coordinate of the H point of the driver is the X plane, and if the result is less than zero, the vertical plane passing through the X coordinate of the H point of the driver is advanced by an HR value which is the X plane;
s304, a horizontal plane passing through the Z coordinate of the H point of the driver is a Z plane, and a vertical plane of the Y coordinate of the H point of the driver is a Y plane;
and determining the intersection point of the three planes as a reference origin.
Preferably, in step S400, the step of establishing the boundary points of the hand extension and the interface is:
s401, forming a series of three-dimensional coordinates according to a G value reference standard;
s402, selecting a reference origin as a coordinate origin, and establishing a series of three-dimensional coordinates as a plurality of boundary points.
Preferably, in step S500, a plurality of boundary points are connected longitudinally by spline curves to form a plurality of spline curves, and each spline curve is filled to form a hand extension and an interface;
checking the automotive interior modeling data according to the hand extension and the interface, and selectively modifying the interior modeling data according to the checking result.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the important parts of the driving position in the vehicle and the important parts of the sitting postures of the driver are subjected to coordinate parameterization, so that corresponding hand extension and interfaces can be generated for different vehicle types and different sitting postures of the driver only by adjusting related parameters, and the operation steps are concise and high in repeatability.
2. The invention establishes the standard module parameterized driving structure tree, so that the parameter calculation and drawing processes are all automatically carried out by the parameterized module, and errors caused by manual calculation and drawing negligence are prevented.
3. According to the invention, the hand extension of the driver and the interface generation efficiency are improved, the interface can be generated only by a few seconds for inputting parameters, and compared with a mode of manually calculating and drawing by transmission, the efficiency is greatly improved.
Drawings
Fig. 1 is a flowchart of a method according to an embodiment of the present invention.
Fig. 2 is a partial reference graph of the boundary points of the present invention.
Fig. 3 shows the vehicle environment parameters and the driver sitting posture parameters of the present invention.
FIG. 4 is a flow chart of a method for determining a reference origin in the present invention.
FIG. 5 is a diagram of a hand extension and interface generated by the present invention.
FIG. 6 is a drawing of a hand extension and interface generated by the present invention for checking automotive interior modeling data.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Referring to fig. 1-6, the invention provides a technical scheme of a saloon car driver hand extension and interface parameterization construction method based on CATIA software, which comprises the following steps:
a saloon car driver hand extension and interface parameterization construction method based on CATIA software comprises the following steps:
s100, building a standard module parameterized driving structure tree.
S200, inputting automobile environment parameters and driver sitting posture parameters.
In step S200, the automotive environment parameters include:
an X coordinate of a steering wheel center point, a Y coordinate of the steering wheel center point, and a Z coordinate of the steering wheel center point;
the driver sitting posture parameters include:
the X coordinate of the driver H point, the Y coordinate of the driver H point and the Z coordinate of the driver H point;
the X coordinate of the driver's foot point, the Y coordinate of the driver's foot point and the Z coordinate of the driver's foot point.
S300, calculating the whole vehicle arrangement factors, and establishing a whole vehicle reference coordinate system and a reference origin.
In step S300, the whole vehicle arrangement factor G is determined by substituting a plurality of vehicle interior dimensions together into a formula, wherein the vehicle interior dimensions include:
seat height = driver H point Z coordinate-driver foot point Z coordinate;
steering wheel center point height = steering wheel center point Z coordinate-driver foot point Z coordinate.
In step S300, the whole vehicle reference coordinate system is formed by intersecting an X plane, a Y plane and a Z plane, and the determining step of the whole vehicle reference coordinate system is as follows:
s301, calculating a reference HR point;
s302, substituting the HR points into a calculation formula to judge;
s303, determining an X plane according to the result, wherein if the result is greater than or equal to zero, the vertical plane passing through the X coordinate of the H point of the driver is the X plane, and if the result is less than zero, the vertical plane passing through the X coordinate of the H point of the driver is advanced by an HR value which is the X plane;
s304, a horizontal plane passing through the Z coordinate of the H point of the driver is a Z plane, and a vertical plane of the Y coordinate of the H point of the driver is a Y plane;
and determining the intersection point of the three planes as a reference origin.
S400, establishing boundary points of the hand extension and the interface through formula selection.
In step S400, the step of establishing the boundary point of the hand extension and the interface is as follows:
s401, forming a series of three-dimensional coordinates according to a G value reference standard;
s402, selecting a reference origin as a coordinate origin, and establishing a series of three-dimensional coordinates as a plurality of boundary points.
S500, establishing a hand extension and an interface.
In step S500, longitudinally connecting a plurality of boundary points by using spline curves to form a plurality of spline curves, and filling each spline curve to form a hand extension and an interface;
checking the automotive interior modeling data according to the hand extension and the interface, and selectively modifying the interior modeling data according to the checking result.
The technical scheme adopted by the invention is as follows:
first, a standard modular parameterized driving structural tree is built in CATIA software, wherein the structural tree comprises automobile environment parameters and driver sitting posture parameters, as shown in fig. 3. The specific parameters are as follows: the method comprises the steps of a driver H point X coordinate, a driver H point Y coordinate, a driver H point Z coordinate, a steering wheel center point X coordinate, a steering wheel center point Y coordinate, a steering wheel center point Z coordinate, a driver foot point X coordinate, a driver foot point Y coordinate and a driver foot point Z coordinate. These parameters may be assigned and modified.
And then taking a specific parameter of a certain vehicle type as an example, inputting the environmental parameter of a certain car and the sitting posture parameter of a driver, wherein the parameters provide basis and convenience for subsequent calculation and modification.
And then calculating a whole vehicle arrangement factor according to the automobile environment parameters and the sitting posture parameters of the driver, wherein the whole vehicle arrangement factor G is determined by a plurality of vehicle internal dimensions together, and can be calculated by the following formula:
G＝0.00327*H30+0.00285*H17-3.21 (1)
the meaning of each symbol in the formula: h30 is the height of the seat, the size is the Z coordinate of the H point of the driver minus the Z coordinate of the foot point of the driver, H17 is the height of the central point of the steering wheel, and the size is the Z coordinate of the central point of the steering wheel minus the Z coordinate of the foot point of the driver.
And then establishing a whole vehicle reference coordinate system and a reference origin, as shown in fig. 4. The whole vehicle reference coordinate system is formed by intersecting an X plane, a Y plane and a Z plane in a pairwise perpendicular mode. The determination process of the X plane is as follows:
calculating a reference HR point
HR＝786-99*G (2)
If HR-L53 is less than 0, the HR point is obtained by the forward and backward movement of the driver's foot point by HR (the specific numerical value is indicated here); if HR-L53> =0, the HR point is the driver H point. Wherein G is a whole vehicle arrangement factor, and the length of the H point of the L53 driver is calculated by the formula (1), and the size is obtained by subtracting the X coordinate of the foot point of the driver from the X coordinate of the H point of the driver.
The horizontal plane passing through the Z coordinate of the H point of the driver is a Z plane; the longitudinal vertical plane passing through the Y coordinate of the H point of the driver is a Y plane, the transverse vertical plane passing through the reference HR point is an X plane, and the intersection point of the three planes is the reference origin.
In CATIA software, the reference origin position is determined and calculated by a formula.
If 'HR-L53' <0mm, 'reference origin\reference origin\x' = 'driver H point X coordinate' + 'HR'.
if 'HR-L53' > = 0mm, 'reference origin\reference origin\x' = 'driver H point X coordinate';
'reference origin\reference origin\y' = 'driver H point Y coordinate';
reference origin\reference origin\z ' = ' driver H point Z coordinate '.
And establishing boundary points of the hand extension and the interface. The values in tables 1-42 in the standards are entered into the CATIA software to establish boundary points, with reference to J287 standards promulgated by the American society of automotive Engineers SAE. The process of establishing the boundary points will be described in detail below using table 1 as an example. Table 1 shows the position coordinates of the boundary point relative to the reference origin when the whole vehicle arrangement factor G < -1.25. For convenience of description, the coordinates of the truncated portion in the embodiment of the present invention are shown in fig. 2. In fig. 2, the leftmost column is a Z-distance from the reference origin, where upward is positive; the uppermost transverse movement is a Y-direction distance from a reference origin, wherein the direction to the driver side is positive; the intermediate value is the X-direction distance from the reference origin, wherein the direction toward the tail of the vehicle is positive. In this way, three-dimensional coordinates of a series of points are formed. In CATIA software, the coordinates at different G values are selected using a formula,
if‘(G)’<-1.25，`
'Point set\Point.1\X' = -532mm
'Point set\Point.1\Y' = -400mm
'Point set\Point.1\Z' =800 mm
Establishing each point, referring to the three-dimensional coordinates in fig. 2 by XYZ values, and selecting a reference origin from the origin of coordinates to establish a plurality of boundary points. And longitudinally connecting the points by using spline curves to form a plurality of spline curves, and filling the spline curves by using a surface to form a hand extension and an interface. And similarly, when the arrangement factor G of the whole vehicle in the SAE J287 rule in the table 2-42 is equal to other values, the position coordinates of the boundary point relative to the reference origin are selected by using a formula, and other conditions are input into CATIA software. After the specific parameters of a certain vehicle model are determined, the parameters can be input into the structural tree, and boundary points, spline curves and filling surfaces are automatically selected through formulas to form corresponding driver hand extensions and interfaces, as shown in fig. 5. When drivers of different vehicle types meet different sitting postures, only the parameter values in the structural tree are required to be changed, and the hand extension and the interface are also changed accordingly, so that a great amount of repeated labor time is saved, and the construction precision and the construction efficiency are improved.
The generated hand extension and interface are used for checking the automotive interior molding data, and the hand extension and interface and the automotive interior molding data are assembled into a file when checking, so as to check whether the parts such as a switch, a button, a knob, a touch screen and the like which need to be touched by the hand extension are within the reach of a driver, and if not, the parts need to be fed back to a molding department in time and modified.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
In order to solve the problems, the invention provides a parameterized construction method for the hand extension and the interface of a car driver based on CATIA software, which uses a parameterized module in the CATIA software to solidify the complicated construction process of the hand extension and the interface of the driver into a module tool, establishes parameterized hand extension and interface, and can generate corresponding hand extension and interface by changing parameters for different sitting postures of drivers of different car types, thereby saving a great deal of repeated labor time and improving construction precision and efficiency.
Claims (7)
1. A method for constructing the hand extension and interface parameterization of a car driver based on CATIA software is characterized by comprising the following steps:
s100, establishing a standard module parameterized driving structure tree;
s200, inputting automobile environment parameters and driver sitting posture parameters;
s300, calculating a whole vehicle arrangement factor, and establishing a whole vehicle reference coordinate system and a reference origin;
s400, establishing boundary points of the hand extension and the interface through formula selection;
s500, establishing a hand extension and an interface.
2. The method for constructing the hand extension and the interface parameterization of the car driver based on the CATIA software according to claim 1, wherein in step S200, the car environment parameters include:
the X-coordinate of the steering wheel center point, the Y-coordinate of the steering wheel center point, and the Z-coordinate of the steering wheel center point.
3. The method for constructing the hand extension and interface parameterization of the car driver based on CATIA software according to claim 2, wherein in step S200, the driver sitting posture parameters include:
the X coordinate of the driver H point, the Y coordinate of the driver H point and the Z coordinate of the driver H point;
the X coordinate of the driver's foot point, the Y coordinate of the driver's foot point and the Z coordinate of the driver's foot point.
4. A method for constructing a driver' S hand and interface parameterization of a car based on CATIA software according to claim 3, wherein in step S300, the whole car layout factor G is determined by a formula in which a plurality of vehicle internal dimensions are commonly substituted, wherein the vehicle internal dimensions include:
seat height = driver H point Z coordinate-driver foot point Z coordinate;
steering wheel center point height = steering wheel center point Z coordinate-driver foot point Z coordinate.
5. The method for constructing the hand extension and the interface parameterization of the car driver based on the CATIA software according to claim 1, wherein in step S300, the whole car reference coordinate system is formed by intersecting an X plane, a Y plane and a Z plane, and the determining step of the whole car reference coordinate system is as follows:
s301, calculating a reference HR point;
s302, substituting the HR points into a calculation formula to judge;
s303, determining an X plane according to the result, wherein if the result is greater than or equal to zero, the transverse plumb plane passing through the X coordinate of the H point of the driver is the X plane, and if the result is less than zero, the transverse plumb plane passing through the X coordinate of the H point of the driver is advanced by HR value to be the X plane;
s304, a horizontal plane passing through the Z coordinate of the H point of the driver is a Z plane, and a vertical plane of the Y coordinate of the H point of the driver is a Y plane;
and determining the intersection point of the three planes as a reference origin.
6. The method for constructing the hand extension and the interface parameterization of the car driver based on the CATIA software according to claim 5, wherein in the step S400, the step of establishing the boundary points of the hand extension and the interface is as follows:
s401, forming a series of three-dimensional coordinates according to a G value reference standard;
s402, selecting a reference origin as a coordinate origin, and establishing a series of three-dimensional coordinates as a plurality of boundary points.
7. The method for constructing the hand extension and interface parameterization of the car driver based on CATIA software according to claim 6, wherein in step S500, spline curves are used for longitudinally connecting a plurality of boundary points to form a plurality of spline curves, and each spline curve is filled to form the hand extension and interface;
checking the modeling data of the automotive interior according to the hand extension and the interface, and selectively modifying the modeling data according to the checking result.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116401771A (en) * | 2023-06-07 | 2023-07-07 | 江西五十铃汽车有限公司 | Electronic hand brake operation space checking method, system, storage medium and equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116401771A (en) * | 2023-06-07 | 2023-07-07 | 江西五十铃汽车有限公司 | Electronic hand brake operation space checking method, system, storage medium and equipment |
| CN116401771B (en) * | 2023-06-07 | 2023-09-22 | 江西五十铃汽车有限公司 | Electronic hand brake operation space checking method, system, storage medium and equipment |
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Application publication date: 20230512 |