CN110727104A - Automobile front windshield glass imaging checking method and automobile - Google Patents
Automobile front windshield glass imaging checking method and automobile Download PDFInfo
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- CN110727104A CN110727104A CN201910920896.8A CN201910920896A CN110727104A CN 110727104 A CN110727104 A CN 110727104A CN 201910920896 A CN201910920896 A CN 201910920896A CN 110727104 A CN110727104 A CN 110727104A
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- B60R1/001—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles integrated in the windows, e.g. Fresnel lenses
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Abstract
The invention provides an automobile front windshield glass imaging checking method and an automobile, wherein the method comprises the following steps: making a plane from a left eye point of a driver and a selected point on a luminous surface of a display screen, determining a reflection point M corresponding to the selected 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, 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 first imaging area corresponding to the left eyepoint of the driver according to a plurality of incidence points; determining a second imaging area corresponding to the right eyepoint of the driver; and taking the union of the first imaging area and the second imaging area as a target imaging area. The invention makes the imaging area closer to the real state, is more beneficial to the optimization arrangement adjustment during the design, and reduces the influence of the glaring of the display screen when the driver or the passenger drives at night.
Description
Technical Field
The specification relates to the technical field of automobiles, in particular to an automobile front windshield glass imaging checking method and an automobile.
Background
When the automobile runs at night, various display screens on the automobile instrument panel can form images on windshield glass or side window glass, and if the brightness of the display screens is high and the imaging areas are in areas where a driver observes a road surface and a rearview mirror, the vision of the driver can be interfered. In order to avoid the interference, the imaging area needs to be manufactured through theoretical verification of software during design so as to avoid a sight line observation area.
When an imaging area of a display screen on curved glass is manufactured, two methods are mainly adopted at present: first, it is made of UG, but it is not easy to carry out parameterized layout design, and the repeated checking work is more tedious. Secondly, the method is manufactured by using CAITA, and can only be judged by selecting a reflection thin strip of a typical point, so that an accurate area cannot be found or a large error exists in manufacturing.
Disclosure of Invention
The specification provides an automobile front windshield glass imaging checking method and an automobile, so as to solve the defects in the related technology.
According to a first aspect of the embodiments of the present specification, there is provided an imaging checking method for a front windshield of an automobile, including 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.
Optionally, the method further comprises: 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.
Optionally, the 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 perpendicular to the curved surface of the front windshield glass includes:
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.
Optionally, the determining, based on the plane, 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 includes:
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.
Optionally, the method further comprises
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.
Optionally, the method further comprises: 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.
Optionally, the 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 perpendicular to the curved surface of the front windshield glass includes:
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.
Optionally, the selected points on the light emitting surface of the display screen at least include points on 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 a light emitting surface of a display screen on an instrument panel of the automobile is checked for an imaging area on a curved surface of a front windshield, and the checking is realized by using the checking method.
The method for checking the imaging of the front windshield glass of the automobile provided by the specification is characterized in that a point which passes through a left eye point of a driver and is on a light emitting surface of a display screen is used as a plane, a normal of a reflection point M on a curved surface of the front windshield glass is determined based on the plane, the normal is adjusted to be vertical to the curved surface of the front windshield glass, and then an accurate imaging area is determined. The method corrects the reflection point M, so that the imaging area is closer to a real state, the optimal arrangement and adjustment are facilitated during design, and the influence of imaging dazzling of a display screen on a driver or a passenger during driving at night is reduced.
Drawings
Fig. 1 is a schematic diagram of three-dimensional modeling data of an automobile shown in an exemplary embodiment of the present specification.
Fig. 2 is a schematic diagram of a plane S defined by a left eye point, a selected point on the light emitting surface of the display screen, and a curved surface of the front windshield glass according to an exemplary embodiment of the present disclosure.
Fig. 3 is a schematic diagram illustrating the determination of the reflection point M in an exemplary embodiment of the present description.
Fig. 4 is a schematic diagram illustrating the measurement of the angle of the reflection point M with the front windshield according to an exemplary embodiment of the present description.
Fig. 5 is a schematic diagram of the modified reflection point M according to an exemplary embodiment of the present disclosure.
Fig. 6 is a schematic diagram of a first imaging region corresponding to a left eye point, shown in an exemplary embodiment of the present specification.
Fig. 7 is a schematic diagram illustrating an intersection area of the first imaging area and the second imaging area according to an exemplary embodiment of the present disclosure.
A front windshield curved surface 1; the display screen light emitting face 2.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present specification. Rather, they are merely examples of methods consistent with certain aspects of the present description, as detailed in the appended claims.
When the method for imaging and checking the automobile front windshield glass is carried out, as shown in fig. 1, automobile three-dimensional modeling data is established firstly, wherein the automobile three-dimensional modeling data comprises a front windshield glass curved surface 1, a driver eye point and a display screen luminous surface on an automobile instrument panel. Wherein the driver eyepoint includes a left eyepoint and a right eyepoint. In the embodiment of the specification, the method applies CATIA to make the automobile three-dimensional modeling data. The checking method is also suitable for imaging checking of the front door and window glass if no other factors influence the checking method in the using process.
The method for checking the imaging of the front windshield glass of the automobile provided by the specification comprises the following steps of:
step S100, a plane is formed by a left eye point of a driver and a selected point on the luminous surface 2 of the display screen, and a reflection point M corresponding to the selected point on the luminous surface 2 of the display screen on the curved surface 1 of the front windshield glass is determined based on the plane.
Firstly, selecting a reflective point on a light emitting surface 2 of the display screen, wherein the selected point on the light emitting surface 2 of the display screen is one point 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 at least comprise points on the four-edge angle of the light emitting surface 2 of the display screen, so that the outline of the reflection of the display screen, namely the reflected imaging area, is formed conveniently. Each determination of a selected point on the light-emitting surface 2 of the display screen requires a corresponding reflection point on the windscreen. In the process, a reference plane needs to be determined.
For example, take the driver's left eyepoint as an example. As shown in FIG. 2, the upper left corner of the quadrangular corner of the light-emitting surface 2 of the display screen is determined as a selection point C. A straight line A is formed by connecting the left eye point of the driver with a selected point on the luminous surface 2 of the display screen, and a perpendicular line B of the curved surface 1 of the front windshield glass is formed by a selected point C on the luminous surface 2 of the display screen. And manufacturing a plane S passing through the straight line A and the perpendicular line B, wherein the plane S is set to be capable of rotating around the straight line A. The plane S can rotate 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 the reflection point corresponding to the selected point C is determined, a sketch is drawn on the plane S, the plane S intersects with the curved surface 1 of the windshield glass to obtain an intersection line, and a tangent point of the intersection line of the plane S and the curved surface 1 of the windshield glass is drawn, where the tangent point is the reflection point M corresponding to the selected point C.
Step S200, making a normal of the reflection point M, measuring an angle between the normal and the curved surface 1 of the front windshield glass, and adjusting the plane according to the angle to check the reflection point M until the normal is perpendicular to the curved surface 1 of the front windshield glass.
As shown in fig. 3, a perpendicular line passing through the tangent point is taken as a normal line L of the incident point M. A straight line connecting a point C selected on the light emitting surface 2 of the display screen and the tangent point (reflection point M) is an incident light ray, a straight line connecting the tangent point and the left eye point is a reflected light ray, and the incident light ray and the reflected light ray are restrained to be symmetrical relative to a normal line; namely, the tangent point, the incident light, the reflected light and the normal are completely determined, and the four relations are unchanged during correction.
In practice, as shown in fig. 4, by measuring the angle between the normal L made by the sketch and the curved surface 1 of the front windshield, it is found that the normal L is not completely perpendicular to the windshield (and if the radian of the glass is larger, the perpendicularity between the normal L and the windshield is worse), i.e. there is an error in the reflection point M. The specification corrects the reflection point M to be completely perpendicular to the curved surface of the windshield by adjusting the angle of the plane S rotating around the straight line a.
Specifically, after the normal L is made, the angle between the normal L and the curved surface 1 of the windshield glass is measured, and the measured value is 89.96deg (deg represents an angle), for example. The angle between the normal L and the curved surface 1 of the windshield glass is not perpendicular, and needs to be corrected. And after measuring the angle between the normal line and the curved surface 1 of the front windshield glass, calculating the difference angle between the angle and 90 degrees.
The difference between 89.96 and 90 was calculated to be 0.04. And rotating the plane S around a straight line A connecting the left eye point of the driver with the selection point on the luminous surface 2 of the display screen, adjusting the rotation of the screen around the straight line A to be 0.04 degrees according to the difference angle, correcting the reflection point M, and moving the reflection point M when rotating the plane S.
As shown in fig. 5, the angle between the normal L and the curved surface 1 of the windshield glass is measured again, and the plane S is adjusted to rotate around the straight line a again; and repeating the steps until the normal L is vertical to the curved surface 1 of the front windshield glass. And when the normal L is vertical to the curved surface 1 of the front windshield glass, the tangent point of the intersection line between the plane S and the curved surface 1 of the front windshield glass is a corrected reflection point M.
Step S300, determining a plurality of incidence points by using the plurality of selected points on the light emitting surface 2 of the display screen, and determining a first imaging area corresponding to the left eyepoint of the driver according to the plurality of incidence points.
The above steps S100 to S200 determine a reflection point M corresponding to a selected point on the light emitting surface 2 of the display screen, and perform correction. If it is desired to determine the imaging area of the entire light-emitting surface 2 of the display screen on the curved surface 1 of the front windshield, at least the reflection points M of the four corners of the light-emitting surface 2 of the display screen should be determined. Namely, the corrected reflection points M of the other three angles of the light-emitting surface 2 of the display screen are repeatedly determined according to the steps.
Of course, the corrected reflection points M corresponding to the four middle points of the boundary of the light-emitting surface 2 of the display screen may be determined additionally.
As shown in fig. 6, connecting the respective reflection points M forms a first imaging region corresponding to the left eye point of the driver.
And step S400, determining the same first imaging area by using the left eye point of the driver, and determining a second imaging area corresponding to the right eye point of the driver.
After the first imaging area corresponding to the left eye point of the driver is determined, the second imaging area corresponding to the right eye point of the driver is determined by utilizing a method for determining the first imaging area corresponding to the left eye point of the driver.
And replacing the left eye point in the steps S100 to S300 with the right eye point, and repeating the steps to obtain a second imaging area.
And S500, taking the union of the first imaging area and the second imaging area as a target imaging area.
As shown in fig. 7, after the first imaging area and the second imaging area are determined through the above steps, the areas of the first imaging area and the second imaging area are collected, that is, the imaging areas of the light emitting surface 2 of the display screen on the curved surface 1 of the windshield glass, which are actually determined by the left and right eyes of the driver. And the determined imaging area is the target imaging area obtained by the method of the specification, and the error of area manufacturing is small. The method has the advantages that the error of the common method is corrected, meanwhile, the complete area of the display screen can be conveniently and accurately manufactured, the error is small, the parameterization adjustment is facilitated, the workload of the display screen during arrangement is reduced, and the accuracy is improved.
The embodiments of the present disclosure will be further described below with reference to specific operation method flows.
First, data on the position of the whole vehicle is prepared to determine a reference plane.
As shown in fig. 1, the operator's eye point, the curved surface 1 of the front windshield glass, and the light emitting surface 2 of the display screen are prepared at the vehicle position.
As shown in fig. 2, a left eye point of the driver is connected with a selected point (an upper left corner point on the boundary of the light emitting surface of the display screen) on the light emitting surface 2 of the display screen, and a straight line a is drawn; selecting a point from the upper left corner of the luminous surface 2 of the display screen to form a straight line B vertical to the front windshield glass; a plane S passing through the straight line A and the straight line B is formed and is arranged to be rotatable around the straight line A.
The reflection point of the selected point on the curved surface 1 of the windscreen is then determined and the over-reflection point is used as the normal.
As shown in fig. 3, a sketch is made on a plane S, the plane S intersects with the front windshield glass surface to obtain an intersecting line, a tangent line of the intersecting line is made to find a tangent point as a reflection point M, and a perpendicular line passing through the tangent point and making the tangent line is a normal line L. The straight line connecting the selected point and the tangent point on the light emitting surface 2 of the display screen is incident light, the straight line connecting the tangent point and the left eye point is reflected light, the incident light and the reflected light are restrained to be symmetrical relative to the normal, and the tangent point, the incident light, the reflected light and the normal are completely determined.
And then the reflection point M is checked.
As shown in fig. 4 to 5, the plane S is rotated around a straight line a connecting the left eye point of the driver and the selected point on the light emitting surface 2 of the display screen, the angle between the normal L and the curved surface 1 of the front windshield glass is measured, and the difference angle between the angle and 90 ° is calculated. 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 L is vertical to the curved surface 1 of the front windshield glass. The corrected reflection point M is used as a base point for subsequently manufacturing the first imaging area.
And then respectively repeating the steps to determine the reflection points of the left lower angular point, the right upper angular point and the right lower angular point of the light-emitting surface 2 of the display screen, and respectively correcting the reflection points. Four reflection points corresponding to the left upper corner point, the left lower corner point, the right upper corner point and the right lower corner point are connected to form a first imaging area of the left eye point, as shown in fig. 6.
The method step of determining the first imaging area with reference to the left eyepoint produces a second imaging area corresponding to the right eyepoint.
For example: connecting the right eye point of the driver with a selected point (an upper right corner point on the boundary of the display screen) on the light emitting surface 2 of the display screen, and drawing a straight line A2; selecting a point from the upper right corner of the luminous surface 2 of the display screen to form a straight line B2 vertical to the front windshield glass; a plane passing through the line a2 and the line B2 is made and is set to be rotatable about the line a 2.
Drawing a sketch on a plane, intersecting the plane and the front windshield glass surface to obtain an intersecting line, drawing a tangent line of the intersecting line to find a tangent point as a reflection point M2, and taking a perpendicular line passing through the tangent point and drawing the tangent line as a normal line L2. The straight line connecting the selected point and the tangent point on the light emitting surface 2 of the display screen is incident light, the straight line connecting the tangent point and the right eye point is reflected light, the incident light and the reflected light are restrained to be symmetrical relative to the normal, and the tangent point, the incident light, the reflected light and the normal are completely determined. And rotating the plane around a straight line A2 connecting the right eye point of the driver with a selected point on the light emitting surface 2 of the display screen, measuring the angle between the normal L2 and the curved surface 1 of the front windshield glass, and calculating the difference angle between the angle and 90 degrees. Adjusting the screen to rotate around the straight line A2 by the difference angle, and correcting the reflection point M2 so that the normal L is perpendicular to the curved surface 1 of the front windshield glass. The corrected reflection point M2 is used as a base point for the subsequent fabrication of the second imaging region.
And integrating the first imaging area and the second imaging area manufactured by the method, and taking the union of the first imaging area and the second imaging area as a target imaging area.
The present specification also provides a method of manufacturing an automobile,
the automobile is characterized in that the checking of an imaging area of a light emitting surface of a display screen on an instrument panel of the automobile on a curved surface of a front windshield is realized by using the checking method.
The above description is only a preferred embodiment of the present disclosure, and should not be taken as limiting the present disclosure, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112100741A (en) * | 2020-08-27 | 2020-12-18 | 黄冈格罗夫氢能汽车有限公司 | Catia-based hydrogen energy automobile combination instrument imaging checking system and method |
| CN113190918A (en) * | 2021-04-28 | 2021-07-30 | 安徽江淮汽车集团股份有限公司 | Curved surface light reflection checking method and system for vehicle part |
| CN115941910A (en) * | 2022-11-29 | 2023-04-07 | 阿维塔科技(重庆)有限公司 | Method and device for determining imaging area |
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