CN110727104A - Automobile front windshield glass imaging checking method and automobile - Google Patents

Abstract

The invention provides a method for imaging and checking the front windshield glass of an automobile and the automobile, wherein the method comprises: selecting a point as a plane passing through the driver's left eye point and the light-emitting surface of the display screen, and determining the surface on the curved surface of the front windshield glass based on the plane The reflection point M corresponding to the selected point on the light-emitting surface of the display screen is used as the normal line of the reflection point M, and the plane is adjusted according to the angle to check the reflection point M until the normal line and the The curved surface of the front windshield is vertical; the first imaging area corresponding to the driver's left eye point is determined according to multiple incident points; the second imaging area corresponding to the driver's right eye point is determined; The union of the two imaging regions serves as the target imaging region. The invention makes the imaging area closer to the real state, is more conducive to optimizing the layout adjustment during design, and reduces the influence of the dazzling imaging of the display screen when the driver or occupant drives at night.

Description

Imaging and checking method of automobile front windshield glass and automobile

technical field

The present specification relates to the technical field of automobiles, and in particular, to a method and an automobile for imaging and checking the front windshield of an automobile.

Background technique

When driving at night, various displays on the dashboard of the car will be imaged on the windshield or side window glass. If the brightness of the display is high, and the imaging area is in the area where the driver observes the road and the rearview mirror, the driver will be affected. line of sight interferes. In order to avoid this kind of interference, it is necessary to make the imaging area through the theoretical check of the software during the design, so that it avoids the line-of-sight observation area.

When making the imaging area of the display screen on the curved glass, there are currently two main methods: one is to use UG to make it, but it is not conducive to parameterized layout design, and it is tedious to repeat the verification work. The second is to use CAITA, which can only be judged by selecting the reflection thin strips of typical points. It is impossible to find the exact area or there is a large error in the production.

SUMMARY OF THE INVENTION

This specification provides a method for imaging and checking the front windshield of an automobile and an automobile, so as to solve the deficiencies in the related art.

According to a first aspect of the embodiments of the present specification, there is provided a method for imaging and checking an automobile front windshield glass, which includes the following steps:

Establishing three-dimensional modeling data of the automobile, the three-dimensional modeling data of the automobile includes the curved surface of the front windshield, the driver's eye point, and the light-emitting surface of the display screen on the dashboard of the automobile;

A point is selected as a plane passing through the driver's left eye point and the light-emitting surface of the display screen, and based on the plane, the reflection point M corresponding to the selected point on the light-emitting surface of the display screen on the curved surface of the front windshield is determined as the reflection point The normal of M, measure the angle between the normal and the curved surface of the front windshield, and adjust the plane according to the angle to check the reflection point M until the normal is perpendicular to the curved surface of the front windshield ; Determine a plurality of incident points with a plurality of selected points on the light-emitting surface of the display screen, and determine a first imaging area corresponding to the driver's left eye point according to the plurality of incident points;

Determine the second imaging area corresponding to the driver's right eye point with the same steps of determining the first imaging area from the driver's left eye point;

The union of the first imaging area and the second imaging area is used as a target imaging area.

Optionally, the method further includes: determining the plane, including:

Connect the driver's left eye point and the selected point on the light-emitting surface of the display screen to make a straight line A, and select a point on the light-emitting surface of the display screen to make a vertical line B of the curved surface of the front windshield, and make a plane passing through the straight line A and the vertical line B , the plane is set to be rotatable around the straight line A;

Wherein, the selected point on the light-emitting surface of the display screen is one of the points on the boundary of the light-emitting surface of the display screen.

Optionally, the angle between the normal line and the front windshield curved surface is measured, and the plane is adjusted according to the angle to check the reflection point M until the normal line and the front windshield curved surface are vertical, including:

Make the plane rotate around the line A connecting the driver's left eye point and the selected point on the light-emitting surface of the display screen,

Measure the angle between the normal line and the curved surface of the front windshield, and calculate the difference angle between the angle and 90°;

Adjust the rotation of the screen around the straight line A according to the difference angle, and correct the reflection point M so that the normal line is perpendicular to the curved surface of the front windshield.

Optionally, determining the reflection point M corresponding to the selected point on the light-emitting surface of the display screen on the curved surface of the front windshield glass based on the plane includes:

A sketch is drawn on the plane, the tangent point of the intersection of the plane and the curved surface of the front windshield is drawn, and a vertical line is drawn through the tangent point, and the vertical line is taken as the normal of the incident point M.

Optionally, the method also includes

The straight line connecting the selected point on the light-emitting surface of the display screen and the tangent point is the incident light ray, and the straight line connecting the tangent point and the left eye point is the reflected light ray, which constrains the incident light ray to be opposite to the reflected light ray Symmetrical to the normal.

Optionally, the method further includes: determining the plane, including:

Connect the driver's right eye point and the selected point on the light-emitting surface of the display screen to make a straight line A, and select a point on the light-emitting surface of the display screen to make a vertical line B of the curved surface of the front windshield, and make a plane passing through the straight line A and the vertical line B , the plane is set to be rotatable around the straight line A;

Wherein, the selected point on the light-emitting surface of the display screen is one of the points on the boundary of the light-emitting surface of the display screen.

Optionally, the angle between the normal line and the front windshield curved surface is measured, and the plane is adjusted according to the angle to check the reflection point M until the normal line and the front windshield curved surface are vertical, including:

Make the plane rotate around the straight line A connecting the driver's right eye point and the selected point on the light-emitting surface of the display screen,

Measure the angle between the normal line and the curved surface of the front windshield, and calculate the difference angle between the angle and 90°;

Adjust the rotation of the screen around the straight line A according to the difference angle, and correct the reflection point M so that the normal line is perpendicular to the curved surface of the front windshield.

Optionally, the selected points on the light-emitting surface of the display screen include at least points on the four corners of the light-emitting surface of the display screen.

According to a second aspect of the embodiments of the present specification, there is provided an automobile, wherein the calibration of the imaging area of the light-emitting surface of the display screen on the front windshield glass surface on the dashboard of the automobile is realized by using the calibration method described above.

In the method for checking the image of the front windshield glass provided in this manual, a point is selected as a plane passing through the driver's left eye point and the light-emitting surface of the display screen, and the normal line of the reflection point M on the curved surface of the front windshield glass is determined based on the plane. The curved front windshield is vertical to determine the exact imaging area. The correction of the reflection point M by this method makes the imaging area closer to the real state, which is more conducive to optimizing the layout adjustment during design, and reduces the influence of the dazzling image of the display screen when the driver or occupant drives at night.

Description of drawings

FIG. 1 is a schematic diagram of three-dimensional modeling data of an automobile according to an exemplary embodiment of the present specification.

FIG. 2 is a schematic diagram of the left eye point, the selection point of the light-emitting surface of the display screen, and the plane S determined by the curved surface of the front windshield according to an exemplary embodiment of the present specification.

FIG. 3 is a schematic diagram of determining the reflection point M according to an exemplary embodiment of the present specification.

FIG. 4 is a schematic diagram of measuring the angle between the reflection point M and the front windshield according to an exemplary embodiment of the present specification.

FIG. 5 is a schematic diagram of the post-correction reflection point M shown in an exemplary embodiment of the present specification.

FIG. 6 is a schematic diagram of a first imaging area corresponding to a left eye point according to an exemplary embodiment of the present specification.

FIG. 7 is a schematic diagram of an intersection area of a first imaging area and a second imaging area according to an exemplary embodiment of the present specification.

Front windshield curved surface 1; display light-emitting surface 2.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this specification. Rather, they are merely examples of methods consistent with some aspects of this specification as recited in the appended claims.

When carrying out the method for imaging and checking the front windshield of an automobile, as shown in FIG. 1 , firstly, the three-dimensional modeling data of the automobile is established, and the three-dimensional modeling data of the automobile includes the curved surface 1 of the front windshield, the driver's eye point, and the display screen on the dashboard of the automobile. Glowing face. The driver's eye point includes a left eye point and a right eye point. In the embodiment of this specification, the method uses CATIA to produce the three-dimensional modeling data of the automobile. The calibration method described in this manual is also applicable to the image calibration of the front door window glass if there are no other factors in the process of use.

The method for imaging and checking the front windshield glass provided in this manual includes the following steps:

Step S100, select a point on the light-emitting surface 2 of the display screen and the driver's left eye point as a plane, and determine the reflection point M corresponding to the selected point on the light-emitting surface 2 of the display screen on the curved surface of the front windshield glass 1 based on the plane. .

First, determine the selection of reflective points on the light-emitting surface 2 of the display screen, and the selected point on the light-emitting surface 2 of the display screen is one of the points on the boundary of the light-emitting surface 2 of the display screen. The selected points on the light-emitting surface 2 of the display screen include at least points on the four corners of the light-emitting surface 2 of the display screen, which facilitates the formation of the reflection outline of the display screen, that is, the reflected imaging area. Each time a selected point on the light-emitting surface 2 of the display screen is determined, a corresponding reflection point needs to be determined on the front windshield. In the process, a datum plane needs to be determined.

For example, take the driver's left eye point as an example. As shown in FIG. 2 , the upper left corner of the four corners of the light-emitting surface 2 of the display screen is determined as the selection point C. Connect the driver's left eye point and the selected point on the light-emitting surface 2 of the display screen as a straight line A, and select a point C on the light-emitting surface 2 of the display screen as the vertical line B of the front windshield curved surface 1. A plane S passing through the straight line A and the vertical line B is made, and the plane S is set to be rotatable around the straight line A. The plane S can be rotated around the straight line A, so that the reflection point corresponding to the selected point C can be accurately determined in the subsequent steps.

As shown in FIG. 3 , when determining the reflection point corresponding to the selected point C, a sketch is drawn on the plane S, and the plane S intersects the front windshield curved surface 1 to obtain an intersection line, which is used as the plane The tangent point between S and the intersection of the front windshield curved surface 1, the tangent point is the reflection point M corresponding to the selected point C.

Step S200, make the normal of the reflection point M, measure the angle between the normal and the curved surface 1 of the front windshield glass, and adjust the plane according to the angle to check the reflection point M until the method The line is perpendicular to the front windshield curved surface 1 .

As shown in FIG. 3 , the vertical line of the tangent is drawn through the tangent point, and the normal L of the incident point M is taken as the vertical line. The straight line connecting the point C selected on the light-emitting surface 2 of the display screen and the tangent point (reflection point M) is the incident light ray, and the straight line connecting the tangent point and the left eye point is the reflected light ray, constraining the incident light The ray and the reflected ray are symmetrical with respect to the normal; that is, the tangent point, the incident ray, the reflected ray, and the normal are completely determined, and the relationship between the four remains unchanged during correction.

As shown in Figure 4, during the actual operation, by measuring the angle between the normal line L made by the sketch and the curved surface 1 of the front windshield glass, it is found that the normal line L and the windshield glass are not completely perpendicular (and if the radian of the glass is larger, the normal line L and the windshield glass are not completely perpendicular. The worse the verticality of the windshield is), which means that there is an error in the reflection point M. This specification corrects the reflection point M by adjusting the rotation angle of the plane S around the straight line A, so that it is completely perpendicular to the curved surface of the windshield.

Specifically, after making the above normal line L, measure the angle between the normal line L and the curved surface 1 of the front windshield glass, for example, the measured value is 89.96deg (deg represents an angle). It is explained that the angle between the normal line L and the curved surface 1 of the front windshield is not perpendicular and needs to be corrected. After measuring the angle between the normal line and the front windshield curved surface 1, calculate the difference angle between the angle and 90°.

Calculate the difference between 89.96 and 90 to be 0.04. Then make the plane S rotate around the straight line A connecting the driver's left eye point and the selected point on the light-emitting surface 2 of the display screen, and adjust the rotation of the screen around the straight line A to be 0.04° according to the difference angle. , the reflection point M is corrected, and when the plane S is rotated, the reflection point M is also displaced accordingly.

As shown in FIG. 5 , measure the angle between the normal line L and the front windshield curved surface 1 again, and adjust the plane S to rotate around the straight line A again; repeat the above steps until the normal line L and the front windshield curved surface 1 vertical. When the normal line L is perpendicular to the front windshield curved surface 1, the tangent point of the intersection between the plane S and the front windshield curved surface 1 is the corrected reflection point M.

Step S300: Determine a plurality of incident points from a plurality of selected points on the light-emitting surface 2 of the display screen, and determine a first imaging area corresponding to the driver's left eye point according to the plurality of incident points.

In the above steps S100 to S200, a reflection point M corresponding to a point selected on the light-emitting surface 2 of the display screen is determined and corrected. If the imaging area of the entire display screen light-emitting surface 2 on the front windshield curved surface 1 needs to be determined, at least the reflection points M at the four corners of the display screen light-emitting surface 2 should be determined. That is, the modified post-reflection points M of the other three corners of the light-emitting surface 2 of the display screen are determined repeatedly according to the above steps.

Of course, the corrected post-reflection points M corresponding to the four midpoints of the boundary of the light-emitting surface 2 of the display screen can also be determined separately.

As shown in FIG. 6 , the respective reflection points M are connected to form a first imaging area corresponding to the driver's left eye point.

Step S400 , determining the second imaging area corresponding to the driver's right eye point in the same step of determining the first imaging area from the driver's left eye point.

After the first imaging area corresponding to the driver's left eye point is determined, the second imaging area corresponding to the driver's right eye point is determined by using the method for determining the first imaging area from the driver's left eye point.

The left eye point in the above steps S100 to S300 is replaced with the right eye point, and the steps are repeated to obtain the second imaging area.

Step S500, taking the union of the first imaging area and the second imaging area as a target imaging area.

As shown in Figure 7, after the first imaging area and the second imaging area are determined through the above steps, the combination of the two areas is taken, that is, the light-emitting surface 2 of the display screen actually determined by the driver's left and right eyes is in the front windshield Imaging area on glass curved surface 1. And the determined imaging area is the target imaging area obtained by using the method of this specification, and the error of area production is small. The errors made by the common method are corrected, and at the same time, the complete area of the display screen can be produced more conveniently and accurately, and the error is small, which is conducive to parameter adjustment, reduces the workload of display screen layout, and improves the accuracy.

The embodiments of the present specification will be further described below with a specific operation method flow.

First, prepare the data on the vehicle position to determine the reference plane.

As shown in Figure 1, prepare the driver's eye point, the curved surface 1 of the front windshield and the light-emitting surface 2 of the display screen on the vehicle position.

As shown in Figure 2, connect the driver's left eye point with the point selected on the luminous surface 2 of the display screen (the upper left corner point on the boundary of the luminous surface of the display screen), and draw a straight line A; select the point through the upper left corner of the luminous surface 2 of the display screen , make a straight line B perpendicular to the front windshield; make a plane S passing through the straight line A and the straight line B, and set this plane to be rotatable around the straight line A.

Then determine the reflection point of the selected point on the front windshield surface 1, and use the reflection point as a normal.

As shown in Figure 3, a sketch is drawn on the plane S, the plane S intersects the front windshield glass surface to obtain an intersection line, and the tangent line of the intersection line is used to find the tangent point as the reflection point M, and the perpendicular line of the tangent line is made through the tangent point. is the normal L. The straight line connecting the selected point and the tangent point on the luminous surface 2 of the display screen is the incident light, and the straight line connecting the tangent point and the left eye point is the reflected light. The incident light and the reflected light are constrained to be symmetrical relative to the normal. Light and normal are completely determined.

Then check the reflection point M.

As shown in Fig. 4 to Fig. 5, rotate the plane S around the line A connecting the driver's left eye point and the selected point on the light-emitting surface 2 of the display screen, and measure the normal line L and the curved surface of the front windshield. 1 angle, calculate the difference angle between said angle and 90°. Adjust the screen to rotate around the straight line A according to the difference angle, and correct the reflection point M so that the normal line L is perpendicular to the front windshield curved surface 1 . The corrected reflection point M is used as a base point for the subsequent production of the first imaging area.

Then repeat the above steps respectively to determine the reflection points of the lower left corner point, the upper right corner point and the lower right corner point of the light-emitting surface 2 of the display screen, and correct the reflection points respectively. Connect the four reflection points corresponding to the upper left corner point, the lower left corner point, the upper right corner point, and the lower right corner point to form the first imaging area of the left eye point, as shown in FIG. 6 .

The second imaging area corresponding to the right eye point is made by referring to the method steps of determining the first imaging area with reference to the left eye point.

For example: connect the driver's right eye point with the point selected on the luminous surface 2 of the display screen (the upper right corner point on the boundary of the display screen), and draw a straight line A2; select a point on the upper right corner of the luminous surface 2 of the display screen and make it perpendicular to the front windshield line B2; make a plane passing through line A2 and line B2, and set this plane to be rotatable around line A2.

Draw a sketch on the plane, the plane intersects the front windshield glass surface to obtain an intersection line, find the tangent point as the reflection point M2 as the tangent of the intersection line, and the vertical line passing through the tangent point to make the tangent line is the normal line L2. The straight line connecting the selected point and the tangent point on the luminous surface 2 of the display screen is the incident light, and the straight line connecting the tangent point and the right eye point is the reflected light. Light and normal are completely determined. Rotate the plane around the straight line A2 connecting the driver's right eye point and the selected point on the light-emitting surface 2 of the display screen, measure the angle between the normal line L2 and the front windshield curved surface 1, and calculate the angle Difference angle from 90°. Adjust the screen to rotate the difference angle around the straight line A2, and correct the reflection point M2 so that the normal line L is perpendicular to the front windshield curved surface 1 . The corrected reflection point M2 is used as a base point for the subsequent production of the second imaging area.

The first imaging area and the second imaging area produced by the above method are integrated, and the union of the first imaging area and the second imaging area is used as the target imaging area.

This specification also provides a method of manufacturing an automobile,

An automobile is characterized in that the calibration of the imaging area of the light-emitting surface of the display screen on the dashboard of the automobile on the curved surface of the front windshield is realized by using the calibration method described above.

The above descriptions are only preferred embodiments of this specification, and are not intended to limit this specification. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this specification shall be included in this specification. within the scope of protection.

Claims (9)

1. An imaging checking method for a front windshield glass of an automobile is characterized by comprising the following steps:

establishing automobile three-dimensional modeling data, wherein the automobile three-dimensional modeling data comprises a front windshield glass curved surface, a driver eye point and a display screen light-emitting surface on an automobile instrument panel;

making a plane from a left eye point of a driver and an extraction point on a luminous surface of a display screen, determining a reflection point M corresponding to the extraction point on the luminous surface of the display screen on the curved surface of the front windshield glass based on the plane, making a normal line of the reflection point M, measuring an angle between the normal line and the curved surface of the front windshield glass, and adjusting the plane according to the angle to check the reflection point M until the normal line is vertical to the curved surface of the front windshield glass; determining a plurality of incidence points by using a plurality of selected points on the luminous surface of the display screen, and determining a first imaging area corresponding to the left eyepoint of the driver according to the incidence points;

determining a second imaging area corresponding to the right eye point of the driver by using the step that the first imaging areas are the same as the left eye point of the driver;

and taking the union of the first imaging area and the second imaging area as a target imaging area.

2. The method for imaging and checking the front windshield of the automobile as recited in claim 1, further comprising: determining the plane, including:

connecting a left eye point of a driver with a selection point on a luminous surface of a display screen to form a straight line A, making a perpendicular line B of a curved surface of a front windshield glass through the selection point on the luminous surface of the display screen, and making a plane passing through the straight line A and the perpendicular line B, wherein the plane is arranged to rotate around the straight line A;

and the selected point on the light emitting surface of the display screen is one of the points on the boundary of the light emitting surface of the display screen.

3. The method for imaging and checking the front windshield glass of the automobile as claimed in claim 1, wherein the measuring the angle between the normal line and the curved surface of the front windshield glass, and the adjusting the plane according to the angle to check the reflection point M until the normal line is perpendicular to the curved surface of the front windshield glass comprises:

rotating the plane around a straight line A connecting the left eye point of the driver and the selection point on the luminous surface of the display screen,

measuring the angle between the normal line and the curved surface of the front windshield glass, and calculating the difference angle between the angle and 90 degrees;

and adjusting the screen to rotate around the straight line A according to the difference angle, and correcting the reflection point M to ensure that the normal is vertical to the curved surface of the front windshield glass.

4. The method for imaging and checking the front windshield glass of the automobile as claimed in claim 1, wherein the determining a reflection point M on the curved surface of the front windshield glass corresponding to the selected point on the light emitting surface of the display screen based on the plane comprises:

drawing a sketch on the plane, drawing a tangent point of an intersection line of the plane and the curved surface of the front windshield glass, drawing a perpendicular line through the tangent point, and taking the perpendicular line as a normal line of the incidence point M.

5. The method for imaging and checking the front windshield of the automobile as recited in claim 4, further comprising

The straight line connecting the point selected on the light emitting surface of the display screen and the tangent point is incident light, the straight line connecting the tangent point and the left eye point is reflected light, and the incident light and the reflected light are constrained to be symmetrical relative to a normal line.

6. The method for imaging and checking the front windshield of the automobile as recited in claim 1, further comprising: determining the plane, including:

connecting a right eye point of a driver with a selected point on a luminous surface of a display screen to form a straight line A, making a perpendicular line B of a curved surface of the front windshield glass through the selected point on the luminous surface of the display screen, and making a plane passing through the straight line A and the perpendicular line B, wherein the plane is arranged to rotate around the straight line A;

and the selected point on the light emitting surface of the display screen is one of the points on the boundary of the light emitting surface of the display screen.

7. The method for imaging and checking the front windshield glass of the automobile as claimed in claim 1, wherein the measuring the angle between the normal line and the curved surface of the front windshield glass, and the adjusting the plane according to the angle to check the reflection point M until the normal line is perpendicular to the curved surface of the front windshield glass comprises:

rotating the plane around a straight line A connecting the right eye point of the driver and the selection point on the luminous surface of the display screen,

measuring the angle between the normal line and the curved surface of the front windshield glass, and calculating the difference angle between the angle and 90 degrees;

and adjusting the screen to rotate around the straight line A according to the difference angle, and correcting the reflection point M to ensure that the normal is vertical to the curved surface of the front windshield glass.

8. The method for imaging and checking the front windshield glass of the automobile as recited in claim 1, wherein the points selected on the light emitting surface of the display screen at least comprise points at four corners of the light emitting surface of the display screen.

9. An automobile, characterized in that the checking of the imaging area of the luminous surface of the display screen on the instrument panel of the automobile on the curved surface of the front windshield is realized by using the checking method as claimed in any one of claims 1 to 8.

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