CN109323678B

CN109323678B - Checking device and checking method

Info

Publication number: CN109323678B
Application number: CN201811141998.1A
Authority: CN
Inventors: 李阳; 姚创增; 成弘; 张建国
Original assignee: SAIC Volkswagen Automotive Co Ltd
Current assignee: SAIC Volkswagen Automotive Co Ltd
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2020-07-31
Anticipated expiration: 2038-09-28
Also published as: CN109323678A

Abstract

The invention provides a checking device and a checking method applied to the technical field of glass checking. The checking method comprises the following steps: importing graphic data which can be identified by a three-dimensional CAD environment into the three-dimensional CAD environment so as to form a three-dimensional model of glass in the three-dimensional CAD environment; selecting a plurality of measurement points on a first surface of a three-dimensional shape of glass; manufacturing a first light path diagram and a second light path diagram according to a light propagation principle; measuring an included angle between propagation paths of partial light rays refracted to the outside of the glass from the second surface in the first light path diagram and the second light path diagram of the incident light passing through each measuring point, wherein the included angle is called a secondary image offset of the glass at the corresponding measuring point; and calculating the maximum secondary image offset of each measuring point. The method can be used for checking different types of glass by checking the sub-image offset of the glass in a quantitative mode, and the checking efficiency of the glass can be effectively improved by checking the sub-image offset of the glass in a quantitative mode.

Description

Checking device and checking method

Technical Field

The invention relates to the technical field of glass checking, in particular to a checking device and a checking method.

Background

The windshield occupies a large proportion of the entire vehicle outer contour area. In the research and development process of the vehicle, after the clay model is approved, the dimension parameters of the outer surface of the vehicle body can be recorded by using a three-coordinate measuring instrument, the dimension parameters are used as a basis for drawing the vehicle body model in three-dimensional design software, and the drawn vehicle body model can be researched and developed in the next step usually by checking, in particular to a windshield model in the vehicle body model. It is also common for windshields provided by suppliers to be certified for use. Either the windshield model drawn during the development stage or the windshield supplied by the supplier typically requires a check for manufacturability, optical performance, scratchability, etc.

When checking various performances of the windshield and/or the windshield model, different manufacturers have respective incompatible checking methods and special checking devices and adopt different evaluation indexes and evaluation systems, so that the checking results are difficult to integrate and unify, and the checking efficiency of the windshield is low.

Disclosure of Invention

The invention aims to provide a checking device and a checking method, which aim to solve the technical problem that the existing checking device and the existing checking method are low in checking efficiency.

In order to solve the technical problem, the invention provides a checking method for checking glass, which comprises the following steps: importing graphic data recognizable to a three-dimensional CAD environment into the three-dimensional CAD environment to form a three-dimensional shape of glass in the three-dimensional CAD environment, the three-dimensional shape being a three-dimensional curved surface body having a thickness, the three-dimensional shape including a first surface and a second surface; selecting a plurality of measurement points on a first surface of a three-dimensional shape of glass; according to the light propagation principle, making incident light which passes through each measuring point along the direction parallel to a Y reference plane and a Z reference plane, entering the inside of the glass after being refracted by a first surface, directly refracting the incident light to the outside of the glass from a second surface of the glass, and making a second light path diagram which enters the inside of the glass after being refracted by the first surface, sequentially reflecting the incident light by the second surface and the first surface of the glass and refracting the incident light to the outside of the glass from the second surface; measuring an included angle between propagation paths of partial light rays refracted to the outside of the glass from the second surface in the first light path diagram and the second light path diagram of the incident light passing through each measuring point, wherein the included angle is called a secondary image offset of the glass at the corresponding measuring point; and calculating the maximum secondary image offset of each measuring point.

Optionally, the checking method further includes: according to different requirements of each area of the glass on the secondary image offset, marking each measuring point on the first surface of the glass by adopting various marks; and outputting a report of the secondary image offset of the glass.

Optionally, the checking method further includes: according to the light propagation principle, a third light path diagram is made, wherein incident light rays passing through each measuring point along the direction parallel to a Y reference plane and a Z reference plane enter the glass after being refracted by a first surface and are directly refracted to the outside of the glass from a second surface of the glass, and a fourth light path diagram is made, wherein incident light rays passing through a predetermined number of predetermined points corresponding to the measuring points along the direction parallel to the Y reference plane and the Z reference plane enter the glass after being refracted by the first surface and are directly refracted to the outside of the glass from the second surface of the glass, and the distance between the projection of each measuring point and the projection of each predetermined point corresponding to the measuring point on the X reference plane is delta X; measuring an included angle between propagation paths of partial light rays refracted from the second surface to the outside of the glass in a third light path diagram and a fourth light path diagram, and calculating a ratio of the included angle to delta X, wherein the ratio is called optical distortion of the measuring points, the third light path diagram is a light path diagram of incident light rays passing through each measuring point, and the fourth light path diagram is a light path diagram of incident light rays passing through a predetermined number of predetermined points corresponding to the measuring points; calculating the maximum value of the optical distortion of each measuring point, and comparing the maximum values of the optical distortions of all the measuring points to obtain the point with the maximum value of the optical distortion and the maximum optical distortion of the point.

Optionally, the checking method further includes: marking the first surface of the glass by various marks according to the maximum optical distortion at each measuring point and the requirement of the optical distortion of the glass at the measuring point; and outputting a report of the optical distortion of the glass.

Optionally, the glass is a windshield of an automobile, the windshield includes a main driving side wiping area and an auxiliary driving side wiping area, and the checking method further includes: measuring the curvature radius of each measuring point in the main driving side scraping and brushing area along the length direction of the main driving side scraping strip, and measuring the curvature radius of each measuring point in the auxiliary driving side scraping and brushing area along the length direction of the auxiliary driving side scraping strip; comparing the curvature radius of a measuring point in the scraping area of the main driving side windshield wiper with the curvature required by the scraping strip of the main driving side windshield wiper at the measuring point, and considering the measuring point as a scraping risk point when the curvature radius of the measuring point in the scraping area of the main driving side windshield wiper is smaller than a preset value; comparing the curvature radius of a measuring point in the scraping area of the assistant driving side windshield wiper with the curvature required by the scraping strip of the assistant driving side windshield wiper, and when the curvature radius of the measuring point in the scraping area of the assistant driving side windshield wiper is smaller than a preset value, considering the measuring point as a scraping risk point and outputting a scraping risk point; and measuring and outputting attack angles of each measuring point in the main driving side wiping area and the auxiliary driving side wiping area.

Optionally, selecting a plurality of measurement points on the first surface of the three-dimensional shape of the windshield comprises: drawing a corresponding main driving side windshield wiper wiping area and an auxiliary driving side windshield wiper wiping area on the first surface of the windshield according to the wiping areas of the main driving side windshield wiper wiping strip and the auxiliary driving side windshield wiper wiping strip on the first surface of the windshield; drawing a plurality of contact lines on a first surface of a windshield, wherein the lengths of the contact lines and the positions of the contact lines relative to the windshield correspond to the lengths and the positions of the main driving side wiper strip and the auxiliary driving side wiper strip on the windshield; a plurality of measurement points are intercepted on a plurality of contact lines.

Optionally, the checking method further includes: drawing an intersection line of the first surface of the windshield and a Y reference plane on the first surface of the windshield, and drawing a connecting line of two end points of the intersection line, wherein the intersection line is called a longitudinal arc line, and the connecting line is called a longitudinal chord; searching a point with the largest distance between the longitudinal arc line and the longitudinal chord, wherein the point is called a longitudinal convex point, measuring the distance between the longitudinal convex point and the longitudinal chord, and the distance is called a longitudinal distance, and outputting the longitudinal convex point and the longitudinal distance; sequentially drawing a plurality of normal planes along the longitudinal chord on the first surface of the windshield, wherein the normal planes are normal planes of the longitudinal chord, so as to obtain intersection lines of the normal planes and the first surface of the windshield, and drawing connecting lines of two end points of the intersection lines, wherein the transverse intersection lines are called transverse arc lines and the connecting lines are called transverse chords; searching a point, called a transverse salient point, on each transverse arc line, where the distance between each transverse arc line and the corresponding transverse chord is the largest, measuring the distance between each transverse salient point and each transverse chord, called the transverse distance, comparing the distances between all the transverse salient points and the transverse chords to obtain the transverse salient point, which is the largest in distance between each transverse salient point and each transverse chord, and outputting the transverse salient point and the transverse distance corresponding to the transverse salient point; drawing a normal plane of a longitudinal chord on the first surface of the windshield, locating a transverse salient point with the largest distance between the transverse chord and the normal plane, measuring the distance between the midpoint of the longitudinal chord and the normal plane, and outputting; and measuring and outputting an included angle between the longitudinal chord and the X reference plane.

The invention also provides a checking device for checking glass, which comprises: the three-dimensional modeling creating module is used for importing graphic data which can be identified by a three-dimensional CAD environment into the three-dimensional CAD environment so as to form a three-dimensional modeling of glass in the three-dimensional CAD environment, wherein the three-dimensional modeling is a three-dimensional curved surface body with thickness; the first measuring point selecting module is used for selecting a plurality of measuring points on the first surface of the windshield; the first light path diagram drawing module is used for manufacturing a first light path diagram which penetrates through each measuring point along the direction parallel to the Y reference plane and the Z reference plane, enters the inside of the windshield after being refracted by the first surface, is directly refracted to the outside of the windshield from the second surface of the windshield, and a second light path diagram which enters the inside of the windshield after being refracted by the first surface, is sequentially reflected by the second surface and the first surface of the windshield and is refracted to the outside of the windshield from the second surface according to the light propagation principle; the secondary image deviation measuring module is used for measuring an included angle between the propagation paths of partial light rays which are refracted to the outside of the windshield from the second surface in the first light path diagram and the second light path diagram of the incident light rays passing through each measuring point, and the included angle is called the secondary image deviation of the windshield at the corresponding measuring point; and the secondary image offset calculation module is used for calculating the maximum secondary image offset of each measuring point and calculating the point with the maximum secondary image offset.

Optionally, the checking apparatus further includes: the second light path drawing module is used for manufacturing a third light path drawing which is parallel to the direction of the Y reference plane and the direction of the Z reference plane, penetrates through each measuring point, is refracted by the first surface, enters the inside of the windshield, and is directly refracted to the outside of the windshield from the second surface of the windshield according to the light propagation principle, and manufacturing a fourth light path drawing which is parallel to the direction of the Y reference plane and the direction of the Z reference plane, penetrates through a predetermined number of predetermined points corresponding to the measuring points, is refracted by the first surface, enters the inside of the windshield, and is directly refracted to the outside of the windshield from the second surface of the windshield; the optical distortion measuring module is used for measuring an included angle between the transmission paths of the partial light rays refracted to the outside of the windshield from the second surface in the third light path diagram and the fourth light path diagram and calculating a ratio of the included angle to delta X, wherein the ratio is called optical distortion of the measuring point; and the optical distortion comparison module is used for calculating the maximum value of the optical distortion of each measuring point and comparing the maximum values of the optical distortions of all the measuring points.

Optionally, the checking apparatus further includes: the curvature radius measuring module is used for measuring the curvature radius of each measuring point in the main driving side scraping and brushing area along the length direction of the main driving side scraping strip and measuring the curvature radius of each measuring point in the auxiliary driving side scraping and brushing area along the length direction of the auxiliary driving side scraping strip; the second curvature comparison module is used for comparing the curvature radius of the measuring point in the main driving side scraping and brushing area with the curvature required by the main driving side scraping strip at the measuring point, considering the measuring point as a scraping and brushing risk point when the curvature radius of the measuring point in the main driving side scraping and brushing area is smaller than a preset value, and comparing the curvature radius of the measuring point in the auxiliary driving side scraping and brushing area with the curvature required by the auxiliary driving side scraping strip, and considering the measuring point as a scraping and brushing risk point when the curvature radius of the measuring point in the auxiliary driving side scraping and brushing area is smaller than a preset value; the proportion judging module is used for checking whether the proportion of the main driving side scraping and brushing area and the auxiliary driving side scraping and brushing area in the core visual field area and the transparent area meets a preset proportion or not; and the attack angle calculation module is used for measuring the attack angles of all measuring points in the main driving side scraping and brushing area and the auxiliary driving side scraping and brushing area.

The checking device and the checking method provided by the invention have the following beneficial effects:

the method can be used for checking the secondary image offset of the glass in a quantitative mode, the result is suitable for different glass manufacturers, the method can be used for checking the glass manufactured by different manufacturers, the secondary image offset of the glass is checked in a quantitative mode, and the checking efficiency of the glass can be effectively improved

The optical distortion of the glass is checked in a quantitative mode, the result is suitable for different glass manufacturers, the optical distortion checking method can be used for checking the glass manufactured by different manufacturers, the optical distortion of the glass is checked in a quantitative mode, and the checking efficiency of the glass can be effectively improved.

The scraping and brushing performance of the glass is checked in a quantitative mode, the result is suitable for different glass manufacturers, the scraping and brushing performance of the glass is checked in a quantitative mode, and the glass checking efficiency can be effectively improved.

Drawings

FIG. 1 is a flow chart of a method for verifying a secondary image shift condition of a windshield in accordance with an embodiment of the present invention;

FIG. 2 is a schematic diagram of a first optical path diagram and a second optical path diagram plotted at a measurement point for checking the condition of secondary image shift of a windshield according to a first embodiment of the present invention;

FIG. 3 is a flowchart of acquiring graphic data of a first surface recognizable to a three-dimensional CAD environment according to one embodiment of the present invention;

FIG. 4 is a flow chart of acquiring three-dimensional model data of a first surface of a windshield in accordance with one embodiment of the invention;

FIG. 5 is a flow chart of selecting a plurality of measurement points in a core field of view and a transparent area on a first surface of a windshield in accordance with a first embodiment of the present invention;

FIG. 6 is a flow chart of a second embodiment of the present invention for checking optical distortion of a windshield;

FIG. 7 is a schematic diagram of a third optical path diagram and a fourth optical path diagram plotted at a certain measurement point when the condition of the secondary image shift of the windshield is checked in the second embodiment of the invention;

FIG. 8 is a flow chart for checking the geometry of a windshield in accordance with a third embodiment of the present invention;

FIG. 9 is a schematic view of geometric features of a third example of the invention for a nuclear windshield;

FIG. 10 is a flow chart for verifying the scratchability of a windshield in accordance with a fourth embodiment of the invention;

FIG. 11 is a schematic view of a first surface of a windshield in accordance with a fourth embodiment of the present invention;

fig. 12 is a graph showing a relationship between an attack angle of a measurement point corresponding to a midpoint of a main driving-side wiper strip and a rotation angle of the main driving-side wiper strip in the fourth embodiment of the present invention;

fig. 13 is a graph showing a relationship between the attack angle of the measurement point corresponding to the midpoint of the sub-driver side wiper strip and the rotation angle of the sub-driver side wiper strip in the fourth embodiment of the present invention.

Detailed Description

The following describes the verification apparatus and the verification method according to the present invention in further detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

Example one

The present embodiment provides a checking method for checking a secondary image shift condition of a windshield of a vehicle.

Referring to fig. 1 and 2, fig. 1 is a flowchart for checking the condition of the secondary image offset of the windshield according to the first embodiment of the invention, and fig. 2 is a schematic diagram of a first optical path diagram and a second optical path diagram drawn at a certain measuring point when the condition of the secondary image offset of the windshield is checked according to the first embodiment of the invention.

The checking method comprises the following steps:

and step S010, importing the graphic data which can be identified by the three-dimensional CAD environment into the three-dimensional CAD environment to form a three-dimensional model of the glass in the three-dimensional CAD environment, wherein the three-dimensional model is a three-dimensional curved surface body with thickness.

Step S110, a plurality of measurement points are selected on a first surface of the windshield, wherein the first surface is an outer surface of the windshield on a side close to the outside of the vehicle.

Step S120, according to the light propagation principle, a first light path diagram L1 is produced, wherein the first light path diagram L is formed by passing incident light rays which pass through each measuring point along a plane parallel to a Y reference plane and a Z reference plane, the incident light rays enter the interior of the windshield after being refracted by a first surface, and are directly refracted to the exterior of the windshield from a second surface of the windshield, and a second light path diagram L2 is formed by entering the interior of the windshield after being refracted by the first surface, sequentially reflecting the incident light rays by the second surface and the first surface of the windshield, and then refracting the incident light rays to the exterior of the windshield from the second surface, wherein the second surface is the outer surface of the windshield on the side close to the interior of the automobile.

In step S130, an angle between propagation paths of the partial light rays refracted from the second surface to the outside of the windshield in the first light path diagram L1 and the second light path diagram L2 of the incident light ray passing through each measurement point is measured, and the angle is referred to as a secondary image offset of the windshield at the corresponding measurement point.

In step S140, the maximum secondary image shift of each measurement point is calculated.

In this embodiment, the coordinate system of the vehicle refers to a coordinate system composed of three orthogonal reference planes determined by a vehicle manufacturer in an initial design stage. These three reference planes are: the X datum plane is a vertical plane which is perpendicular to the Y datum plane and passes through the centers of the left front wheel and the right front wheel; a Y reference plane, a vehicle longitudinal symmetry plane; a Z reference plane, a horizontal plane perpendicular to the Y and X reference planes. The design point of the vehicle seating position is commonly referred to as the R point.

In this embodiment, in step S010, the graphic data recognizable by the three-dimensional CAD environment includes graphic data of the first surface of the windshield. Referring to fig. 3, fig. 3 is a flowchart illustrating acquiring graphic data of a first surface recognizable by a three-dimensional CAD environment according to a first embodiment of the present invention, where the graphic data of the first surface recognizable by the three-dimensional CAD environment may be acquired by the following steps before step S010, specifically as follows:

step S011, three-dimensional model data of the first surface of the windshield is acquired.

Step S012 is to convert the three-dimensional model data of the first surface of the windshield into graphic data recognizable to the three-dimensional CAD environment.

Referring to fig. 4, fig. 4 is a flowchart of acquiring three-dimensional model data of a first surface of a windshield according to a first embodiment of the invention. The step S011 includes the steps of,

step S0111, measuring a size parameter of a first surface of a windshield;

and S0112, drawing a three-dimensional model of the first surface of the windshield according to the size parameters of the first surface of the windshield, and outputting three-dimensional model data of the first surface of the windshield.

In step S0111, a dimensional parameter of the first surface of the windshield is measured, typically by a three-coordinate measuring machine. The three coordinate measuring machine may be a laser measuring machine. The first surface of the windshield may be a first surface of a windshield in a sludge model of a vehicle or a first surface of a windshield manufactured by each supplier.

In step S012, the three-dimensional CAD environment refers to a working scene of common three-dimensional CAD software. The three-dimensional modeling of the first surface of the windshield is formed in the three-dimensional CAD environment after the graphic data is imported into the three-dimensional CAD environment, and the three-dimensional modeling of the first surface of the windshield can be displayed in the display device when the three-dimensional CAD environment is displayed on the display device.

In other embodiments, the graphic data recognizable to the three-dimensional CAD environment obtained by other means may be directly applied to the above step S010 to form the first surface of the windshield in the three-dimensional CAD environment.

In step S010, the graphic data recognizable by the three-dimensional CAD environment further includes thickness information of the windshield.

Each of the measurement points in the step S110 may be a measurement point located in the core visual field region and the transparent region.

The following describes the process of selecting a plurality of measurement points on the core field of view and the transparent area of the vehicle by checking the secondary image offset of the core field of view and the transparent area, but of course, a plurality of measurement points may be selected on the first surface of the windshield in other manners. Referring to FIG. 5, FIG. 5 is a flow chart of selecting a plurality of measurement points in a core field of view and a transparent area on a first surface of a windshield according to one embodiment of the invention. The process of selecting multiple measurement points on the core field of view and the transparent region is as follows:

and step S111, establishing a reference coordinate system in the three-dimensional CAD environment, and enabling the position of the first surface of the windshield in the reference coordinate system to be the same as the position of the first surface of the windshield in the coordinate system of the vehicle.

Step S112, an upper eyepoint and a lower eyepoint are set in the three-dimensional CAD environment, and the positions of the upper eyepoint and the lower eyepoint with respect to the reference coordinate system are made the same as the positions of the upper eyepoint and the lower eyepoint with respect to the coordinate system of the vehicle.

In step S113, a core field of view and a transparent area are rendered on the first surface of the windshield.

And step S114, rotating a first reference plane parallel to the X reference plane according to a plurality of different first preset angles to obtain a plurality of first reference planes, wherein the rotating shaft of the first reference plane when rotating is a straight line which is parallel to the Y axis of the reference coordinate system and passes through the upper eye point.

And step S115, rotating a second reference plane parallel to the X reference plane according to a plurality of different second preset angles to obtain a plurality of second reference planes, wherein the rotating shaft of the second reference plane is a straight line which is parallel to the Y axis of the reference coordinate system and passes through the lower eye point.

Step S116, calculating the intersection lines of all the first reference plane and the second reference plane and the first surface to obtain a plurality of intersection lines;

step S117, selecting a plurality of measurement points on the intersecting line between the core visual field region and the transparent region, where the plurality of measurement points in the core visual field region are first measurement points, and the plurality of measurement points in the transparent region are second measurement points.

In the above step S112, the upper eyepoint and the lower eyepoint are referred to as V-point. The point V is a point determined according to relevant regulations in the field of vehicle manufacturing for checking whether the vehicle field of vision is satisfactory. Point V is generally through the vertical longitudinal plane of the centerline of the front outboard seating position and is related to point R and the design seat back angle.

In step S113, the core viewing area is generally referred to as an a-area, and the transparent area is generally referred to as a B-area. The core field of view and the transparent region are generally drawn according to the position of the upper and lower eyepoints and the associated regulations relating to the division of the field of view directly in front of the driver.

In step S117, a plurality of measurement points may be uniformly selected on all the intersecting lines; the selected first measuring points can be denser than the second measuring points; the plurality of measurement points can be uniformly selected on the part, located in the core visual field area, of all the intersecting lines, meanwhile, the plurality of measurement points can be uniformly selected on the part, located in the transparent area, of all the intersecting lines, and the first measurement points are denser than the second measurement points on each intersecting line.

The checking method further comprises the following steps:

and step S150, according to different requirements of each area of the windshield on secondary image deviation, adopting various marks to mark each measuring point on the first surface of the windshield.

And step S160, outputting a report of the secondary image deviation of the windshield.

In step S150, the measurement points in the core visual field area and the transparent area may be marked with different color marks according to the requirement of secondary image shift of the windshield in the core visual field area and the transparent area. For example, the secondary image shift requirements of the windshield in the core field of view and the clear region may be: the measurement point in the core visual field area where the sub-image offset is not less than a first prescribed value, the measurement point in the transparent area where the sub-image offset is not less than a second prescribed value is marked with red, the measurement point in the core visual field area where the sub-image offset is less than the first prescribed value is marked with green, the measurement point in the transparent area where the sub-image offset is less than the second prescribed value is marked with orange, and the measurement point in the transparent area where the sub-image offset is not less than the second prescribed value is marked with blue. Of course, the secondary image shift requirements of the windshield in the core field of view and the clear area may also be: according to whether the magnitude of the secondary image offset of the measuring point is in a certain numerical range or not, the measuring point in the certain numerical range is marked by adopting one color, the measuring point smaller than the certain numerical range is marked by adopting another color, the measuring point larger than the certain numerical range is marked by adopting another color, and the numerical range of the secondary image offset of the core visual field area is judged to be unequal to the numerical range of the secondary image offset of the transparent area. The requirement for the deflection of the secondary image of the windscreen in the core viewing area and the transparent area may also be some other provision, which is not described in detail here.

In step S160, the reporting of the secondary image shift of the windshield includes: the three-dimensional shape of the windscreen including the various markings, the displacement of the various measuring points and their secondary images on the first surface of the windscreen, and the displacement of the measuring point and its secondary image at which the secondary image displacement is the greatest.

In the method for checking the windshield in the embodiment, the auxiliary image offset of the windshield is checked in a quantitative mode, the result is suitable for different glass manufacturers, the method can be used for checking the windshields manufactured by different manufacturers, the auxiliary image offset of the windshield is checked in a unified mode in a quantitative mode, and the checking efficiency of the windshield can be effectively improved. Wherein the secondary image offset of the windshield is used to verify the optical performance of the windshield.

Example two

The embodiment provides a checking method. The difference between the checking method in this embodiment and the first checking method in this embodiment is that the checking method in this embodiment can also check the optical distortion condition of the windshield of the vehicle.

Referring to fig. 6 and 7, fig. 6 is a flow chart for checking the optical distortion condition of the windshield in the second embodiment of the invention, and fig. 7 is a schematic diagram of a third optical path diagram and a fourth optical path diagram which are drawn at a certain measuring point when the secondary image deviation condition of the windshield is checked in the second embodiment of the invention. The checking method further comprises the following steps:

step S210, according to the light propagation principle, a third light path diagram L3 is made, which is parallel to the Y reference plane and penetrates through each measuring point along the direction parallel to the Y reference plane and the Z reference plane, enters the inside of the windshield after being refracted by the first surface and is directly refracted from the second surface of the windshield to the outside of the windshield, and a fourth light path diagram L4 is made, which penetrates through a predetermined number of predetermined points corresponding to the measuring points along the direction parallel to the Y reference plane and the Z reference plane, enters the inside of the windshield after being refracted by the first surface and is directly refracted from the second surface of the windshield to the outside of the windshield, wherein the distance between each measuring point and the projection of each predetermined point corresponding to the measuring point on the X reference plane is DeltaX, namely, the predetermined number of points corresponding to the measuring points are distributed on a circle with the radius DeltaX of the measuring points as the circle center, and the predetermined number L4 of the incident light penetrating through the predetermined number of points corresponding to the measuring points is equal to the predetermined number.

In step S220, an angle between propagation paths of a portion of light rays refracted from the second surface to the outside of the windshield in the third light path diagram L and the fourth light path diagram L is calculated, and a ratio of the angle to Δ X is calculated, where the ratio is referred to as optical distortion of the measurement point, the third light path diagram L is a light path diagram of incident light rays passing through each measurement point, and the fourth light path diagram L is a light path diagram of incident light rays passing through a predetermined number of predetermined points corresponding to the measurement points.

Step S230, calculating the maximum value of the optical distortion of each measurement point, and comparing the maximum values of the optical distortions of all the measurement points to obtain the point at which the maximum value of the optical distortion is the largest and the optical distortion at which the point is the largest.

In step S210, each measurement point may be a measurement point located in the core visual field area and the transparent area.

In step S220, since the number of the fourth light path diagrams L4 of the incident light passing through the predetermined number of predetermined points corresponding to the measurement points is equal to the predetermined number, each measurement point corresponds to a predetermined number of optical distortions.

The checking method further comprises the following steps:

step S240, marking the first surface of the windshield with various marks according to the maximum optical distortion at each measurement point and the requirement of optical distortion of the windshield at the measurement point.

Step S250, outputting a report of optical distortion of the windshield.

In step S240, the measurement points in the core visual field area and the transparent area may be identified by different colors according to the requirement of optical distortion of the first surface of the windshield in the core visual field area and the transparent area. For example, the optical distortion requirements of the first surface of the windshield in the core field of view and the clear region may be: the optical distortion in the core visual field region is not less than a third prescribed value, the optical distortion in the transparent region is not less than a fourth prescribed value, the measurement points having an optical distortion in the core visual field region less than the third prescribed value are marked with red, the measurement points having an optical distortion in the core visual field region not less than the third prescribed value are marked with green, the measurement points having an optical distortion in the transparent region less than the fourth prescribed value are marked with orange, and the measurement points having an optical distortion in the transparent region not less than the fourth prescribed value are marked with blue. Of course, the optical distortion requirements of the windshield in the core field of view and in the clear area may also be: according to whether the light distortion of the measuring points is in a certain numerical range or not, the measuring points in the certain numerical range are marked by one color, the measuring points smaller than the certain numerical range are marked by another color, the measuring points larger than the certain numerical range are marked by another color, and the numerical range of the light distortion of the core visual field area can be judged to be unequal to the numerical range of the light distortion of the transparent area. The optical distortion requirements of the windshield in the core field of view and in the clear region may also be other provisions, which are not described in detail herein.

In step S250, the optical distortion report of the windshield includes: a three-dimensional shape of the windscreen including various markings, measurement points on the first surface of the windscreen and a maximum value of its optical distortion, and a point at which the maximum value of the optical distortion is greatest and an optical distortion at which the point is greatest.

In this embodiment, the step S210 may be performed after the step S110 in the first embodiment.

In the method for checking the windshield in the embodiment, the optical distortion of the windshield is checked in a quantitative manner, the result is suitable for different glass manufacturers, the method can be used for checking the windshields manufactured by different manufacturers, and the optical distortion of the windshield is uniformly checked in a quantitative manner, so that the checking efficiency of the windshield can be effectively improved. Wherein the optical distortion of the windscreen is checked for checking the optical properties of the windscreen.

EXAMPLE III

The embodiment provides a method for checking a windshield of a vehicle. The method for checking the windshield of the vehicle in the embodiment is different from the method for checking the windshield in the first embodiment in that the method for checking the windshield in the embodiment can also check the geometric characteristics of the windshield of the vehicle.

Referring to fig. 8 and 9, fig. 8 is a flow chart of geometric features of a third example verification windshield of the present invention, and fig. 9 is a schematic view of geometric features of a third example verification windshield of the present invention. The windshield glass geometric characteristic checking method comprises the following steps:

step S310, drawing an intersection line of the first surface P of the windshield and a Y reference plane on the first surface P of the windshield, and drawing a connecting line of two end points of the intersection line, wherein the intersection line is called a longitudinal arc line Z1, and the connecting line is called a longitudinal chord Z2.

In step S320, a point on the longitudinal arc Z1 where the distance between the point and the longitudinal chord Z2 is the largest is found, the point is called a longitudinal salient point T, the distance between the longitudinal salient point T and the longitudinal chord Z2 is measured, the distance is called a longitudinal distance, and the longitudinal salient point T and the longitudinal distance are output. The longitudinal bumps T and the longitudinal spacing are used for representing the difficulty degree of forming the windshield so as to judge the manufacturability of the windshield.

And S330, sequentially drawing a plurality of normal planes along the longitudinal chord Z2 on the first surface P of the windshield, wherein the normal planes are normal planes of the longitudinal chord Z2, so as to obtain intersection lines of the normal planes and the first surface P of the windshield, and drawing connecting lines of two end points of the intersection lines, wherein the transverse intersection lines are called transverse arc lines Z3, and the connecting lines are called transverse chords Z4.

In step S340, a point on each transverse arc Z3 where the distance between the transverse chord Z4 corresponding to each transverse arc Z3 is the largest is found, the point is called a transverse salient point, the distance between the transverse salient point and the transverse chord Z4 is measured, the distance is called a transverse distance, the distances between all the transverse salient points and the transverse chord Z4 are compared, so that the transverse salient point with the largest distance between the transverse salient point and the transverse chord Z4 is obtained, and the transverse salient point and the transverse distance corresponding to the transverse salient point are output. The output transverse salient points and the transverse intervals corresponding to the transverse salient points are used for representing the difficulty degree of forming the windshield so as to judge the manufacturability of the windshield.

In step S350, a normal plane of the longitudinal chord Z2 is drawn on the first surface P of the windshield, the longitudinal salient point T having the largest distance from the longitudinal chord Z2 is located on the normal plane, and the distance between the midpoint M of the longitudinal chord Z2 and the normal plane is measured. The distance is referred to as the symmetry of the first surface of the windshield, and the symmetry is used for representing the difficulty of forming the windshield so as to judge the manufacturability of the windshield.

Step S360, measuring the included angle between the longitudinal chord Z2 and the X reference plane, and the included angle is called the installation angle.

In this embodiment, the step S310 may be performed after the step S010 in the first embodiment.

Example four

The embodiment provides a method for checking a windshield of a vehicle. The method for checking a windshield of a vehicle in this embodiment is different from the method for checking a windshield in the first embodiment in that the method for checking a windshield in this embodiment can also check the scratchability of the windshield of the vehicle.

Referring to fig. 10 and 11, fig. 10 is a flowchart for checking the scratchability of the windshield in the fourth embodiment of the present invention, and fig. 11 is a schematic view of the first surface of the windshield in the fourth embodiment of the present invention. The step of checking the scratchable performance of the windshield in the windshield checking method comprises the following steps:

in step S420, the curvature radius of each measurement point in the main driving side wiper region Q1 in the longitudinal direction of the main driving side wiper strip is measured, and the curvature radius of each measurement point in the sub driving side wiper region Q2 in the longitudinal direction of the sub driving side wiper strip is measured.

Step S430, comparing the curvature radius of the measuring point in the main driving side wiping area Q1 with the curvature required by the main driving side wiper strip at the measuring point, and when the curvature radius of the measuring point in the main driving side wiping area Q1 is smaller than a preset value, considering the measuring point as a wiping risk point; and comparing the curvature radius of the measuring point in the scraping and brushing area of the assistant driving side with the curvature required by the scraping and brushing strip of the assistant driving side, and when the curvature radius of the measuring point in the scraping and brushing area of the assistant driving side is smaller than a preset value, considering the measuring point as a scraping and brushing risk point, and outputting the scraping and brushing risk point. There is often a wiping unclean appearance within the wiping risk point. The preset value of the curvature radius of the measuring point in the main driving side wiping area Q1 and the preset value of the curvature radius of the measuring point in the auxiliary driving side wiping area may be the same or different.

In step S440, it is checked whether or not the ratio of the main driving side wiper region Q1 to the sub driving side wiper region Q2 in the core visual field region and the transparent region satisfies a predetermined ratio and output.

In step S450, the attack angle at each measurement point in the main-drive-side wiping area Q1 and the sub-drive-side wiping area Q2 is measured and output.

In this embodiment, each measurement point may be a measurement point located in the core field of view region and the transparent region. The measurement point in the core field of view is referred to as the third measurement point and the measurement point in the transparent area is referred to as the fourth measurement point.

In this embodiment, the step S110 of setting a plurality of measurement points on the first surface P of the windshield specifically includes:

in step S411, a main driving side wiping area Q1 and a sub driving side wiping area Q2 are drawn on the first surface of the windshield according to the wiping areas of the main driving side wiping strip and the sub driving side wiping strip on the first surface of the windshield.

Step S412, drawing a plurality of contact lines on the first surface P of the windshield, where the lengths of the contact lines and the positions of the contact lines relative to the windshield correspond to the lengths and the positions of the main driving-side wiper strip and the auxiliary driving-side wiper strip on the windshield. As shown in fig. 10, the main driving-side wiper strip and the sub-driving-side wiper strip rotate around respective rotation axes during the wiping process, a plurality of contact lines between the main driving-side wiper strip and the first surface P of the windshield are radially distributed with the rotation axes of the main driving-side wiper strip and the sub-driving-side wiper strip as starting points, a plurality of contact lines between the main driving-side wiper strip and the first surface P of the windshield are first contact lines N1, and a plurality of contact lines between the sub-driving-side wiper strip and the first surface P of the windshield are second contact lines N2.

In step S413, a plurality of third measurement points and a plurality of fourth measurement points are respectively intercepted on the plurality of first contact lines N1 and the plurality of second contact lines N2.

Wherein, in the step S413, the plurality of measurement points may be uniformly intercepted on all of the first contact lines and the second contact lines; the included angle between any two adjacent first contact lines is equal to a first predetermined angle, the included angle between any two adjacent second contact lines is equal to a second predetermined angle, and the first predetermined angle and the second predetermined angle may be equal or unequal.

Specifically, the step S440 includes:

step S441, calculating a union of the main driving side wiping area Q1 and the sub driving side wiping area Q2;

step S442, calculating an intersection of a union of a main driving side scraping area Q1 and an auxiliary driving side scraping area Q2 and a core visual field area, wherein the intersection is called a first intersection, and calculating the proportion of the first intersection in the core visual field area, and the proportion is called a first proportion;

step S443, comparing whether the first ratio is larger than a first predetermined ratio, if the first ratio is larger than or equal to the first predetermined ratio, satisfying the correlation requirement and outputting a signal satisfying the predetermined ratio, and if the first ratio is smaller than the first predetermined ratio, not satisfying the correlation requirement and outputting a signal not satisfying the predetermined ratio;

step 444, calculating an intersection of a transparent area and a union of a main driving side wiping area Q1 and an auxiliary driving side wiping area Q2, wherein the intersection is called a second intersection, and calculating a proportion of the second intersection in the transparent area, and the proportion is called a second proportion;

step S445, comparing whether the second ratio is greater than a second predetermined ratio, if the second ratio is greater than or equal to the second predetermined ratio, the correlation requirement is satisfied and the predetermined ratio is satisfied, and if the second ratio is less than the second predetermined ratio, the correlation requirement is not satisfied and the predetermined ratio is not satisfied.

Specifically, the step S450 includes:

step S451, drawing a plurality of third reference planes which are respectively perpendicular to the length directions of the main driving side scraping strip and the auxiliary driving side scraping strip and penetrate through each measuring point in a three-dimensional CAD environment, drawing an intersecting surface of the third reference plane and the main driving side scraping strip or the auxiliary driving side scraping strip, and drawing a central line which penetrates through the measuring point on the intersecting surface.

And step S452, calculating and outputting an included angle between the center line passing through each measuring point and the normal of the measuring point, wherein the included angle is the attack angle at the measuring point.

In step S452, when the attack angle is output, referring to fig. 12, a relationship curve between the attack angle of the measurement point corresponding to the midpoint of the main driving-side wiper strip and the rotation angle of the main driving-side wiper strip may be output. Referring to fig. 13, a relationship curve between the attack angle of the measurement point corresponding to the midpoint of the rider-side wiper strip and the rotation angle of the rider-side wiper strip may also be output. The attack angle is used for representing the smooth degree of the main driving side scraping strip and the auxiliary driving side scraping strip moving on the first surface of the windshield, so that the defects of shaking, abnormal sound, distortion and the like of the main driving side scraping strip and the auxiliary driving side scraping strip during scraping are avoided.

In the method for checking the windshield in the embodiment, the scraping and brushing performance of the windshield is checked in a quantitative manner, the result is suitable for different glass manufacturers, the scraping and brushing performance of the windshield is checked in a unified manner in a quantitative manner, and the checking efficiency of the windshield can be effectively improved.

EXAMPLE five

The embodiment provides a checking device. The checking device is used for checking the secondary image deviation condition of the windshield of the vehicle.

The verification apparatus in this embodiment includes: the three-dimensional modeling system comprises a three-dimensional modeling establishing module, a measuring point selecting module, a first light path diagram drawing module, a secondary image deviation measuring module and a secondary image deviation calculating module.

The three-dimensional modeling creation module is used for importing graphic data which can be identified by a three-dimensional CAD environment into the three-dimensional CAD environment so as to form a three-dimensional modeling of glass in the three-dimensional CAD environment, wherein the three-dimensional modeling is a three-dimensional curved surface body with thickness.

The measuring point selecting module is used for selecting a plurality of measuring points on a first surface of the windshield, wherein the first surface is the outer surface of the windshield on the side close to the outer part of the automobile.

The first light path diagram drawing module is used for manufacturing incident light which penetrates through each measuring point along the direction parallel to the Y reference plane and the Z reference plane according to a light propagation principle, the incident light enters the interior of the windshield after being refracted by the first surface, and is directly refracted to the exterior of the windshield from the second surface of the windshield, and the incident light enters the interior of the windshield after being refracted by the first surface, and is reflected sequentially by the second surface and the first surface of the windshield and then is refracted to the exterior of the windshield from the second surface. The measurement points may be measurement points located in the core field of view and the transparent region.

The secondary image offset measuring module is used for measuring an included angle between the propagation paths of the partial light rays which are refracted to the outside of the windshield from the second surface in the first light path diagram and the second light path diagram of the incident light rays passing through each measuring point, and the included angle is called the secondary image offset of the windshield at the corresponding measuring point.

The secondary image offset calculation module is used for calculating the maximum secondary image offset of each measurement point and calculating the point with the maximum secondary image offset.

The checking device further comprises a secondary image offset identification module and a secondary image offset output module.

The secondary image offset identification module is used for identifying each measuring point on the first surface of the windshield by adopting various marks according to different requirements of each area of the windshield on the secondary image offset. Specifically, the secondary image offset identification module may identify the measurement points in the core field of view region and the transparent region using different color marks according to a requirement of secondary image offset of the first surface of the windshield in the core field of view region and the transparent region. For example, the secondary image offset requirements of the first surface of the windshield in the core field of view and the transparent region may be: the measurement point in the core visual field area where the sub-image offset is not less than a first prescribed value, the measurement point in the transparent area where the sub-image offset is not less than a second prescribed value is marked with red, the measurement point in the core visual field area where the sub-image offset is less than the first prescribed value is marked with green, the measurement point in the transparent area where the sub-image offset is less than the second prescribed value is marked with orange, and the measurement point in the transparent area where the sub-image offset is not less than the second prescribed value is marked with blue. Of course, the secondary image shift requirement of the first surface of the windshield in the core field of view and the transparent region may also be: according to whether the magnitude of the secondary image offset of the measuring point is in a certain numerical range or not, the measuring point in the certain numerical range is marked by adopting one color, the measuring point smaller than the certain numerical range is marked by adopting another color, the measuring point larger than the certain numerical range is marked by adopting another color, and the numerical range of the secondary image offset of the core visual field area is judged to be unequal to the numerical range of the secondary image offset of the transparent area. The requirement for secondary image shift of the first surface of the windscreen in the core field of view and the transparent region may also be some other provision, which is not described in detail here.

The secondary image offset output module is used for outputting a secondary image offset report of the windshield. The secondary image offset report of the windshield includes: the first surface of the windscreen containing the various markings, the various measurement points on the first surface of the windscreen and their secondary image offsets, and the measurement point with the largest secondary image offset and its secondary image offset.

In this embodiment, the three-dimensional modeling creating module may obtain the graphic data recognizable by the three-dimensional CAD environment through the data obtaining module and the data converting module before importing the graphic data recognizable by the three-dimensional CAD environment into the three-dimensional CAD environment.

The data acquisition module is used for acquiring three-dimensional model data of the first surface of the windshield. The data conversion module is used for converting the three-dimensional model data of the first surface of the windshield into graphic data which can be identified by a three-dimensional CAD environment.

The data acquisition module comprises a parameter measurement module and a model drawing module. The parameter measurement module is used for measuring a dimensional parameter of a first surface of a windshield. The model drawing module is used for drawing a three-dimensional model of the first surface of the windshield according to the size parameters of the first surface of the windshield and outputting three-dimensional model data of the first surface of the windshield.

The parametric measurement module is typically a three-coordinate measuring machine. The first surface of the windshield may be a first surface of a windshield in a sludge model of a vehicle or a first surface of a windshield manufactured by each supplier. The three-dimensional CAD environment refers to a working scene of common three-dimensional CAD software. The graphical data is imported into a three-dimensional CAD environment, the first surface of the windshield is formed in the three-dimensional CAD environment, and the first surface of the windshield can be displayed on a display device when the three-dimensional CAD environment is displayed on the display device. The measurement point selection module is used for selecting a plurality of measurement points on the first surface of the windshield.

The device for checking the windshield in the embodiment checks the secondary image offset of the windshield in a quantitative mode, can be used for checking windshields made by different manufacturers, and can be used for checking the secondary image offset of the windshield in a quantitative mode, so that the checking efficiency of the windshield can be effectively improved. Wherein the secondary image offset of the windshield is used to verify the optical performance of the windshield.

EXAMPLE six

The embodiment provides a checking device. The difference between the checking device in this embodiment and the checking device in the fifth embodiment is that the checking device in this embodiment can also be used for checking the optical distortion condition of the windshield of the vehicle.

The device of checking windshield in this embodiment still includes: the second light path diagram drawing module, the optical distortion measuring module and the optical distortion comparing module.

The second light path drawing module is used for manufacturing a third light path drawing which is parallel to the Y reference plane and the Z reference plane and penetrates through each measuring point, enters the inside of the windshield after being refracted by the first surface, is directly refracted to the outside of the windshield from the second surface of the windshield, and is used for manufacturing a fourth light path drawing which penetrates through a preset number of preset points corresponding to the measuring points along the direction parallel to the Y reference plane and the Z reference plane, enters the inside of the windshield after being refracted by the first surface and is directly refracted to the outside of the windshield from the second surface of the windshield according to the light propagation principle. And the distance between each measuring point and the projection of each predetermined point corresponding to the measuring point on the X reference plane is delta X. That is, a predetermined number of predetermined points corresponding to the measurement points are distributed on a circle having a radius Δ X from the measurement points. The number of the fourth light path diagrams of the incident light rays passing through a predetermined number of predetermined points corresponding to the measurement points is equal to the predetermined number.

The optical distortion measuring module is used for measuring an included angle between the transmission paths of the partial light rays refracted to the outside of the windshield from the second surface in the third light path diagram and the fourth light path diagram, and calculating a ratio of the included angle to delta X, wherein the ratio is called optical distortion of the measuring point. Wherein the third optical path diagram is an optical path diagram of incident light passing through each of the measurement points, and the fourth optical path diagram is an optical path diagram of incident light passing through a predetermined number of predetermined points corresponding to the measurement points.

The optical distortion comparison module is used for calculating the maximum value of the optical distortion of each measuring point and comparing the maximum values of the optical distortions of all the measuring points to obtain the point with the maximum value of the optical distortion and the maximum optical distortion of the point.

The checking device further comprises an optical distortion identification module and an optical distortion output module.

The optical distortion identification module is used for identifying the first surface of the windshield by adopting various marks according to the maximum optical distortion at each measuring point and the requirement of the optical distortion of the windshield at the measuring point. The optical distortion identification module can identify the measuring points in the core visual field area and the transparent area by adopting different colors according to the optical distortion requirement of the first surface of the windshield in the core visual field area and the transparent area. For example, the optical distortion requirements of the first surface of the windshield in the core field of view and the clear region may be: the optical distortion in the core visual field region is not less than a third prescribed value, the optical distortion in the transparent region is not less than a fourth prescribed value, the measurement points having an optical distortion in the core visual field region less than the third prescribed value are marked with red, the measurement points having an optical distortion in the core visual field region not less than the third prescribed value are marked with green, the measurement points having an optical distortion in the transparent region less than the fourth prescribed value are marked with orange, and the measurement points having an optical distortion in the transparent region not less than the fourth prescribed value are marked with blue. Of course, the optical distortion requirements of the first surface of the windshield in the core field of view and the clear area may also be: according to whether the light distortion of the measuring points is in a certain numerical range or not, the measuring points in the certain numerical range are marked by one color, the measuring points smaller than the certain numerical range are marked by another color, the measuring points larger than the certain numerical range are marked by another color, and the numerical range of the light distortion of the core visual field area can be judged to be unequal to the numerical range of the light distortion of the transparent area. The optical distortion requirements of the first surface of the windscreen in the core field of view and in the transparent region may also be other specifications, which are not described in detail herein.

The optical distortion output module is used for outputting an optical distortion report of the windshield. The optical distortion report for the windshield includes: the first surface of the windscreen containing the various markings, the points of measurement on the first surface of the windscreen and the maximum value of its optical distortion, and the point at which the maximum value of the optical distortion is the greatest and the optical distortion at which this point is the greatest.

The device for checking the windshield in the embodiment checks the optical distortion of the windshield in a quantitative mode, can be used for checking windshields made by different manufacturers, and can check the optical distortion of the windshield in a unified mode in a quantitative mode, so that the checking efficiency of the windshield can be effectively improved. Wherein the optical distortion of the windscreen is checked for checking the optical properties of the windscreen.

EXAMPLE seven

The embodiment provides a checking device for a windshield of a vehicle. The difference between the apparatus for checking a windshield of a vehicle in this embodiment and the apparatus for checking a windshield in the fifth embodiment is that the apparatus for checking a windshield in this embodiment can also check the geometric characteristics of the windshield of the vehicle.

The device of checking windshield in this embodiment still includes: the device comprises a longitudinal chord drawing module, a longitudinal distance searching module, a transverse chord drawing module, a transverse distance searching module and a symmetry measuring module.

The longitudinal chord drawing module is used for drawing an intersection line of the first surface of the windshield and the Y reference plane on the first surface of the windshield, and drawing a connecting line of two end points of the intersection line, wherein the intersection line is called a longitudinal arc line, and the connecting line is called a longitudinal chord.

The longitudinal distance searching module is used for searching a point with the largest distance between the longitudinal arc line and the longitudinal chord, the point is called as a longitudinal convex point, measuring the distance between the longitudinal convex point and the longitudinal chord, the distance is called as a longitudinal distance, and outputting the longitudinal convex point and the longitudinal distance. The longitudinal bumps and the longitudinal spacing are used for representing the difficulty degree of forming the windshield so as to judge the manufacturability of the windshield.

The transverse chord drawing module is used for drawing a plurality of normal planes along the longitudinal chord on the first surface of the windshield in sequence, the normal planes are normal planes of the longitudinal chord, so that intersection lines of the normal planes and the first surface of the windshield are obtained, connecting lines of two end points of the intersection lines are drawn, the transverse intersection lines are called transverse arc lines, and the connecting lines are called transverse chords.

The transverse distance searching module is used for searching a point, called a transverse salient point, on each transverse arc line, where the distance between each transverse arc line and the corresponding transverse chord is the largest, measuring the distance between each transverse salient point and each transverse chord, called the transverse distance, comparing the distances between all the transverse salient points and the transverse chords to obtain the transverse salient point, which is the largest in the distance between each transverse salient point and each transverse chord, and outputting the transverse salient point and the transverse distance corresponding to the transverse salient point. The output transverse salient points and the transverse intervals corresponding to the transverse salient points are used for representing the difficulty degree of forming the windshield so as to judge the manufacturability of the windshield.

The transverse distance searching module is used for drawing a normal plane of the longitudinal chord on the first surface of the windshield, the transverse salient point with the largest distance between the transverse salient point and the transverse chord is located on the normal plane, and the distance between the midpoint of the longitudinal chord and the normal plane is measured. The distance is referred to as the symmetry of the first surface of the windshield, and the symmetry is used for representing the difficulty of forming the windshield so as to judge the manufacturability of the windshield.

The symmetry measuring module is used for measuring an included angle between a longitudinal chord and an X datum plane, and the included angle is called as a mounting angle.

Example eight

The embodiment provides a checking device for a windshield of a vehicle. The difference between the apparatus for checking a windshield of a vehicle in this embodiment and the apparatus for checking a windshield in the fifth embodiment is that the apparatus for checking a windshield in this embodiment can also check the wiping performance of the windshield of the vehicle.

The device of checking windshield in this embodiment still includes: the device comprises a curvature radius measuring module, a second curvature comparison module, a proportion judgment module and an attack angle calculation module.

The curvature radius measuring module is used for measuring the curvature radius of each measuring point in the main driving side scraping and brushing area along the length direction of the main driving side scraping strip and is used for measuring the curvature radius of each measuring point in the auxiliary driving side scraping and brushing area along the length direction of the auxiliary driving side scraping strip.

The second curvature comparison module is used for comparing the curvature radius of a measuring point in the main driving side scraping and brushing area with the curvature required by the main driving side scraping strip at the measuring point, and when the curvature radius of the measuring point in the main driving side scraping and brushing area is smaller than a preset value, the measuring point is considered as a scraping and brushing risk point; and the curvature radius of the measuring point in the scraping and brushing area of the auxiliary driving side is compared with the curvature required by the scraping and brushing strip of the auxiliary driving side, and when the curvature radius of the measuring point in the scraping and brushing area of the auxiliary driving side is smaller than a preset value, the measuring point is considered as a scraping and brushing risk point. The preset value of the curvature radius of the measuring point in the main driving side wiping area Q1 and the preset value of the curvature radius of the measuring point in the auxiliary driving side wiping area may be the same or different.

The proportion judging module is used for checking whether the proportion of the main driving side scraping and brushing area and the auxiliary driving side scraping and brushing area in the core visual field area and the transparent area meets the preset proportion.

The attack angle calculation module is used for measuring the attack angles of all measuring points in the main driving side scraping and brushing area and the auxiliary driving side scraping and brushing area.

In this embodiment, the measurement point selection module includes a scraping and brushing area determination module, a contact line drawing module, and a measurement point intercepting module. The scraping and brushing area determining module is used for drawing a corresponding main driving side scraping and brushing area and a corresponding auxiliary driving side scraping and brushing area on the first surface of the windshield according to the scraping and brushing areas of the main driving side scraping strip and the auxiliary driving side scraping strip on the first surface of the windshield. The contact line drawing module is used for drawing a plurality of contact lines on the first surface of the windshield, and the lengths of the contact lines and the positions of the contact lines relative to the windshield correspond to the lengths and the positions of the main driving side scraping strips and the auxiliary driving side scraping strips on the windshield. The measuring point intercepting module is used for intercepting a plurality of third measuring points and a plurality of fourth measuring points on a plurality of first contact lines and a plurality of second contact lines respectively.

The device for checking the windshield in the embodiment checks the scraping and brushing performance of the first surface of the windshield in a quantitative mode, can be used for checking windshields manufactured by different manufacturers, and checks the scraping and brushing performance of the windshield in a quantitative mode, so that the checking efficiency of the windshield can be effectively improved.

The checking device and the checking method in the above embodiments can be used for checking the windshield of a vehicle, and can also be used for checking the secondary image offset condition and the optical distortion condition of various organic glass. For example, the method is used for checking the organic glass such as spectacle lenses, liquid crystal screens and the like so as to control and optimize the shape of the organic glass.

The checking method according to the above embodiment may be applied to three-dimensional CAD software, and may be used to create relevant programs through a secondary development interface in the three-dimensional CAD software according to the above method, so as to output checking results such as a glass secondary image shift report and an optical distortion report by executing the programs.

The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.

Claims

1. A method of checking glass, the method comprising:

importing graphic data recognizable to a three-dimensional CAD environment into the three-dimensional CAD environment to form a three-dimensional shape of glass in the three-dimensional CAD environment, the three-dimensional shape being a three-dimensional curved surface body having a thickness, the three-dimensional shape including a first surface and a second surface;

selecting a plurality of measurement points on a first surface of a three-dimensional shape of glass;

according to the light propagation principle, making incident light which passes through each measuring point along the direction parallel to a Y reference plane and a Z reference plane, entering the inside of the glass after being refracted by a first surface, directly refracting the incident light to the outside of the glass from a second surface of the glass, and making a second light path diagram which enters the inside of the glass after being refracted by the first surface, sequentially reflecting the incident light by the second surface and the first surface of the glass and refracting the incident light to the outside of the glass from the second surface;

measuring an included angle between propagation paths of partial light rays refracted to the outside of the glass from the second surface in the first light path diagram and the second light path diagram of the incident light passing through each measuring point, wherein the included angle is called a secondary image offset of the glass at the corresponding measuring point;

calculating the maximum secondary image offset of each measuring point;

according to the light propagation principle, a third light path diagram is made, wherein incident light rays passing through each measuring point along the direction parallel to a Y reference plane and a Z reference plane enter the glass after being refracted by a first surface and are directly refracted to the outside of the glass from a second surface of the glass, and a fourth light path diagram is made, wherein incident light rays passing through a predetermined number of predetermined points corresponding to the measuring points along the direction parallel to the Y reference plane and the Z reference plane enter the glass after being refracted by the first surface and are directly refracted to the outside of the glass from the second surface of the glass, and the distance between the projection of each measuring point and the projection of each predetermined point corresponding to the measuring point on the X reference plane is delta X;

measuring an included angle between propagation paths of partial light rays refracted from the second surface to the outside of the glass in a third light path diagram and a fourth light path diagram, and calculating a ratio of the included angle to delta X, wherein the ratio is called optical distortion of the measuring points, the third light path diagram is a light path diagram of incident light rays passing through each measuring point, and the fourth light path diagram is a light path diagram of incident light rays passing through a predetermined number of predetermined points corresponding to the measuring points;

calculating the maximum value of the optical distortion of each measuring point, and comparing the maximum values of the optical distortions of all the measuring points to obtain the point with the maximum value of the optical distortion and the maximum optical distortion of the point.

2. A method of verification as claimed in claim 1, the method further comprising:

according to different requirements of each area of the glass on the secondary image offset, marking each measuring point on the first surface of the glass by adopting various marks;

and outputting a report of the secondary image offset of the glass.

3. A method of verification as claimed in claim 1, the method further comprising:

marking the first surface of the glass by various marks according to the maximum optical distortion at each measuring point and the requirement of the optical distortion of the glass at the measuring point;

and outputting a report of the optical distortion of the glass.

4. The method of claim 1, wherein the glass is a windshield of an automobile, the windshield including a primary drive side wiper region and a secondary drive side wiper region, the method further comprising:

measuring the curvature radius of each measuring point in the main driving side scraping and brushing area along the length direction of the main driving side scraping strip, and measuring the curvature radius of each measuring point in the auxiliary driving side scraping and brushing area along the length direction of the auxiliary driving side scraping strip;

comparing the curvature radius of a measuring point in the scraping area of the main driving side windshield wiper with the curvature required by the scraping strip of the main driving side windshield wiper at the measuring point, and considering the measuring point as a scraping risk point when the curvature radius of the measuring point in the scraping area of the main driving side windshield wiper is smaller than a preset value; comparing the curvature radius of a measuring point in the scraping area of the assistant driving side windshield wiper with the curvature required by the scraping strip of the assistant driving side windshield wiper, and when the curvature radius of the measuring point in the scraping area of the assistant driving side windshield wiper is smaller than a preset value, considering the measuring point as a scraping risk point and outputting a scraping risk point;

and measuring and outputting attack angles of each measuring point in the main driving side wiping area and the auxiliary driving side wiping area.

5. The method of calibrating according to claim 4, wherein selecting a plurality of measurement points on the first surface of the three-dimensional shape of the windshield comprises:

drawing a corresponding main driving side windshield wiper wiping area and an auxiliary driving side windshield wiper wiping area on the first surface of the windshield according to the wiping areas of the main driving side windshield wiper wiping strip and the auxiliary driving side windshield wiper wiping strip on the first surface of the windshield;

drawing a plurality of contact lines on a first surface of a windshield, wherein the lengths of the contact lines and the positions of the contact lines relative to the windshield correspond to the lengths and the positions of the main driving side wiper strip and the auxiliary driving side wiper strip on the windshield;

a plurality of measurement points are intercepted on a plurality of contact lines.

6. A method of verification as claimed in claim 1, the method further comprising:

drawing an intersection line of the first surface of the windshield and a Y reference plane on the first surface of the windshield, and drawing a connecting line of two end points of the intersection line, wherein the intersection line is called a longitudinal arc line, and the connecting line is called a longitudinal chord;

searching a point with the largest distance between the longitudinal arc line and the longitudinal chord, wherein the point is called a longitudinal convex point, measuring the distance between the longitudinal convex point and the longitudinal chord, and the distance is called a longitudinal distance, and outputting the longitudinal convex point and the longitudinal distance;

sequentially drawing a plurality of normal planes along the longitudinal chord on the first surface of the windshield, wherein the normal planes are normal planes of the longitudinal chord, so as to obtain intersection lines of the normal planes and the first surface of the windshield, and drawing connecting lines of two end points of the intersection lines, wherein the transverse intersection lines are called transverse arc lines and the connecting lines are called transverse chords;

searching a point, called a transverse salient point, on each transverse arc line, where the distance between each transverse arc line and the corresponding transverse chord is the largest, measuring the distance between each transverse salient point and each transverse chord, called the transverse distance, comparing the distances between all the transverse salient points and the transverse chords to obtain the transverse salient point, which is the largest in distance between each transverse salient point and each transverse chord, and outputting the transverse salient point and the transverse distance corresponding to the transverse salient point;

drawing a normal plane of a longitudinal chord on the first surface of the windshield, locating a transverse salient point with the largest distance between the transverse chord and the normal plane, measuring the distance between the midpoint of the longitudinal chord and the normal plane, and outputting;

and measuring and outputting an included angle between the longitudinal chord and the X reference plane.

7. A device for checking glass, the device comprising:

the three-dimensional modeling creating module is used for importing graphic data which can be identified by a three-dimensional CAD environment into the three-dimensional CAD environment so as to form a three-dimensional modeling of glass in the three-dimensional CAD environment, wherein the three-dimensional modeling is a three-dimensional curved surface body with thickness;

the first measuring point selecting module is used for selecting a plurality of measuring points on the first surface of the windshield;

the first light path diagram drawing module is used for manufacturing a first light path diagram which penetrates through each measuring point along the direction parallel to the Y reference plane and the Z reference plane, enters the inside of the windshield after being refracted by the first surface, is directly refracted to the outside of the windshield from the second surface of the windshield, and a second light path diagram which enters the inside of the windshield after being refracted by the first surface, is sequentially reflected by the second surface and the first surface of the windshield and is refracted to the outside of the windshield from the second surface according to the light propagation principle;

the secondary image deviation measuring module is used for measuring an included angle between the propagation paths of partial light rays which are refracted to the outside of the windshield from the second surface in the first light path diagram and the second light path diagram of the incident light rays passing through each measuring point, and the included angle is called the secondary image deviation of the windshield at the corresponding measuring point;

the secondary image offset calculation module is used for calculating the maximum secondary image offset of each measurement point and calculating the point with the maximum secondary image offset; the second light path drawing module is used for manufacturing a third light path drawing which is parallel to the direction of the Y reference plane and the direction of the Z reference plane, penetrates through each measuring point, is refracted by the first surface, enters the inside of the windshield, and is directly refracted to the outside of the windshield from the second surface of the windshield according to the light propagation principle, and manufacturing a fourth light path drawing which is parallel to the direction of the Y reference plane and the direction of the Z reference plane, penetrates through a predetermined number of predetermined points corresponding to the measuring points, is refracted by the first surface, enters the inside of the windshield, and is directly refracted to the outside of the windshield from the second surface of the windshield;

the optical distortion measuring module is used for measuring an included angle between the transmission paths of the partial light rays refracted to the outside of the windshield from the second surface in the third light path diagram and the fourth light path diagram and calculating a ratio of the included angle to delta X, wherein the ratio is called optical distortion of the measuring point;

and the optical distortion comparison module is used for calculating the maximum value of the optical distortion of each measuring point and comparing the maximum values of the optical distortions of all the measuring points.

8. A verification apparatus as claimed in claim 7, wherein said verification apparatus further comprises:

the curvature radius measuring module is used for measuring the curvature radius of each measuring point in the main driving side scraping and brushing area along the length direction of the main driving side scraping strip and measuring the curvature radius of each measuring point in the auxiliary driving side scraping and brushing area along the length direction of the auxiliary driving side scraping strip;

the second curvature comparison module is used for comparing the curvature radius of the measuring point in the main driving side scraping and brushing area with the curvature required by the main driving side scraping strip at the measuring point, considering the measuring point as a scraping and brushing risk point when the curvature radius of the measuring point in the main driving side scraping and brushing area is smaller than a preset value, and comparing the curvature radius of the measuring point in the auxiliary driving side scraping and brushing area with the curvature required by the auxiliary driving side scraping strip, and considering the measuring point as a scraping and brushing risk point when the curvature radius of the measuring point in the auxiliary driving side scraping and brushing area is smaller than a preset value;

the proportion judging module is used for checking whether the proportion of the main driving side scraping and brushing area and the auxiliary driving side scraping and brushing area in the core visual field area and the transparent area meets a preset proportion or not;

and the attack angle calculation module is used for measuring the attack angles of all measuring points in the main driving side scraping and brushing area and the auxiliary driving side scraping and brushing area.