CN116533889B - Light shield, method for determining front end boundary of light shield and vehicle - Google Patents
Light shield, method for determining front end boundary of light shield and vehicleInfo
- Publication number
- CN116533889B CN116533889B CN202310584801.6A CN202310584801A CN116533889B CN 116533889 B CN116533889 B CN 116533889B CN 202310584801 A CN202310584801 A CN 202310584801A CN 116533889 B CN116533889 B CN 116533889B
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- boundary
- light shield
- view camera
- determining
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/023—Cleaning windscreens, windows or optical devices including defroster or demisting means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R2011/0001—Arrangements for holding or mounting articles, not otherwise provided for characterised by position
- B60R2011/0003—Arrangements for holding or mounting articles, not otherwise provided for characterised by position inside the vehicle
- B60R2011/0033—Rear-view mirrors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R2011/0094—Arrangements for holding or mounting articles, not otherwise provided for characterised by means for covering after user, e.g. boxes, shutters or the like
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
本发明提供遮光罩、确定遮光罩的前端边界的方法及车辆，属于前视摄像头配件布置技术领域，通过本申请的前视摄像头遮光罩前端边界的确定方法来确定遮光罩布置时的前端边界位置，考虑车辆内仪表盘位置的杂散光对前视摄像头影响的区域，利用光路分析找到经挡风玻璃反射的光线射入存在影响区域的前端边界处，根据光路确定需要遮光罩遮挡杂散光的边界位置，从而缩减遮光罩的尺寸的同时也能满足遮挡车内杂散光的需求，防止对前视摄像头的拍摄识别产生影响。
The present invention provides a sun hood, a method for determining the front end boundary of the sun hood, and a vehicle, and belongs to the technical field of front-view camera accessory arrangement. The front end boundary position of the sun hood during arrangement is determined by the method for determining the front end boundary of the front-view camera sun hood of the present application, and the area where stray light at the instrument panel position in the vehicle affects the front-view camera is considered. The light path analysis is used to find the front end boundary of the affected area where light reflected from the windshield enters. The boundary position where the sun hood is required to block the stray light is determined based on the light path, thereby reducing the size of the sun hood while meeting the need to block stray light in the vehicle, thereby preventing it from affecting the shooting and recognition of the front-view camera.
Description
Technical Field
The invention relates to the technical field of arrangement of automobile front-view camera accessories, in particular to a light shield, a method for determining the front end boundary of the light shield and a vehicle.
Background
The advanced driving assistance system (ADVANCED DRIVING ASSISTANCE SYSTEM) utilizes various sensors, millimeter wave radar, laser radar, single/double-eye cameras and satellite navigation which are installed on a vehicle, senses surrounding environment at any time in the running process of the vehicle, collects data, performs static and dynamic object identification, detection and tracking, and combines navigation map data to perform system operation and analysis, thereby enabling a driver to perceive possible danger in advance, effectively increasing the comfort and safety of the driving of the vehicle, and the front-view camera is an important component in the system.
Today's automobile industry is higher and higher to intelligent driving requirement, is also higher and higher to the visual recognition precision requirement of forward looking camera. In the actual driving process, stray light in the vehicle can be projected onto the front windshield to affect visual recognition of the camera, so that recognition accuracy, imaging quality and contrast are reduced, and misjudgment of driving road conditions is caused, so that a lens hood is required to be matched with the front camera to eliminate the influence, and imaging quality of the front camera is improved. The front end of the lower bottom plate of the light shield can be attached to the front windshield, so that the light shield is large in specification and attractive in appearance, and due to the fact that the existing new automobile model is pursued to be low in motion style, the front windshield inclination angle is large, namely the included angle between the front windshield and the vertical direction is increased, the included angle between the horizontal direction is reduced, the front end of the light shield needs to be extended to the front windshield, the size is extremely large, the light shield is not attractive, the requirement of the front upper view in the automobile is influenced, and therefore the problem that needs to be solved is urgent for reducing the size of the light shield when the influence of stray light on the front-view camera is met.
Disclosure of Invention
The invention aims to overcome the technical problems, and provides a light shield, a method for determining the front end boundary of the light shield and a vehicle, so as to solve the problem of reducing the size of the light shield while meeting the requirement of shielding stray light.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a method for determining the lower boundary of the vision envelope boundary of a front-view camera comprises the following steps of determining a ground line where a vehicle is located, determining a blind area target line, wherein the blind area target line is perpendicular to the ground line, the distance between a perpendicular intersection point and a projection point of the front end of the vehicle on the ground line is a blind area distance, and the plane where the blind area target line and a focal point connecting line of the front-view camera are located is the lower boundary of the vision envelope boundary.
Preferably, the ground line is a manned ground line.
A light shield connected with a vehicle interior mirror mounting base, the light shield comprising a lower floor, a left riser, a right riser and a rear riser, the position of the lower floor being defined by a lower boundary determined by the foregoing method;
The rear vertical plate is arranged at the front end of the front-view camera, the rear vertical plate is provided with an opening, the opening is positioned in front of the front-view camera lens, the rear ends of the lower bottom plate, the left vertical plate and the right vertical plate are respectively connected with the rear vertical plate, and the lower ends of the left vertical plate and the right vertical plate are respectively connected with the left side and the right side of the lower bottom plate.
Preferably, the vertical distance between the front end of the lower bottom plate and the lower boundary of the front-view camera view envelope boundary is 2mm.
A method of determining a front boundary of a light shield, comprising the steps of:
s1, arranging a front-view camera and a light shield in a vehicle, wherein the light shield is the light shield;
s2, determining a shielding area according to a characteristic area of the instrument panel to be shielded, combining an area on the instrument panel, in which articles are placed, to form harmful reflection on a front windshield, and determining the front boundary line as the position of the surface of the instrument panel positioned at the front boundary of the shielding area;
s3, carrying out optical path analysis on light rays emitted by a focus of the front-view camera to obtain light rays which are reflected by the inner surface of the front windshield and then are emitted to the front-end boundary line in the step S2;
and S4, taking the boundary position between the light path of the step S3 and the lower bottom plate of the light shield as a front end boundary line of the light shield, wherein a plane in the vertical direction of the front end boundary line of the light shield is the front end boundary of the light shield.
Preferably, the dial features in the step S2 include a dial decoration, a head-up display, a middle speaker, and an air outlet.
Preferably, the characteristic area of the instrument panel to be shielded in the step S2 is an instrument panel area which takes a vertical plane where the front end of the instrument panel close to the front windshield is positioned as a boundary surface and is positioned at one side of the boundary surface far from the front windshield;
In the step S2, the area where the articles are placed on the instrument panel and harmful reflection is formed on the front windshield is the area where the vertical distance between the surface of the instrument panel and the front windshield is greater than or equal to the influence height H.
Preferably, the influencing height H is 80mm.
Preferably, the front-view camera is connected with the mounting base of the rearview mirror in the vehicle, the front end of the front-view camera is provided with a light shield, and the front end boundary of the light shield is determined by adopting the method for determining the front end boundary of the light shield.
Preferably, a defrosting and defogging line is arranged on the inner side of the front windshield, and the defrosting and defogging line is positioned in a shooting area of the front-view camera. Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
the invention provides a light shield, a method for determining the front end boundary of the light shield and a vehicle,
1. The front end boundary position of the light shield is determined by the method for determining the front end boundary of the light shield, the area of influence of stray light at the position of an instrument panel in a vehicle on the front-view camera is considered, the light path of the front end boundary of the influence area, where light reflected by the windshield is shot, is found by utilizing light path analysis, and the boundary position of the stray light which is required to be shielded by the light shield is determined according to the light path, so that the size of the light shield is reduced, the requirement of shielding the stray light in the vehicle can be met, and the influence on shooting identification of the front-view camera is prevented.
2. The size-reduced light shield has good visual effect, is suitable for various automobile models, particularly for automobile models with horizontal front windshields, and can not influence the requirements of drivers or passengers on front vision.
3. Through setting up defrosting defogging line at front windshield, prevent to lead to front windshield fog to lead to the shooting of front view camera because of the inside and outside difference in temperature of car when extreme weather to lead to the fact the influence.
Drawings
Fig. 1 is a schematic diagram of a principle of determining a lower boundary of a view envelope boundary of a front-view camera;
FIG. 2 is a schematic diagram of the location between a mask and a front view camera field envelope boundary;
FIG. 3 is a schematic view of the position between the hood and the front windshield;
FIG. 4 is a schematic top view of a light shield and front view camera;
FIG. 5 is a flow chart of a method for determining a front boundary of a mask;
FIG. 6 is a schematic top view of an instrument panel shielding area;
FIG. 7 is a side view of an instrument panel and a light path;
FIG. 8 is a schematic side view of the front boundary of the mask and the light path;
FIG. 9 is a schematic side view of the front end of the hood with its boundary reduced and relative to the front windshield;
FIG. 10 is a schematic top view of the interior structure of a vehicle assembly hood and defrost defogging lines;
FIG. 11 is an enlarged schematic view of a portion of the mask and defrost defogging lines of FIG. 10;
1, a front-view camera; 2, a vehicle, 3, a ground line, 4, a light shield, 5, a rearview mirror mounting base, 6, a front windshield, 7, an instrument panel, 8, an instrument panel decoration, 9, a head-up display, 10, a middle-mounted loudspeaker, 11, an air outlet, 12, a light path, 13, a front end boundary of the light shield, 14, a defrosting and defogging line;
101. A forward looking camera field envelope boundary; 401, a lower bottom plate, 402, a left vertical plate, 403, a right vertical plate, 404 and a rear vertical plate.
Detailed Description
Further advantages and effects of the present invention will become readily apparent to those skilled in the art from the disclosure herein, by referring to the accompanying drawings and the preferred embodiments. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
The technical scheme of the invention is further described below with reference to the accompanying drawings and examples.
The embodiment provides a method for determining the lower boundary of a vision envelope boundary of a front-view camera, which comprises the following steps of determining a ground line where a vehicle is located, determining a blind area target line which is perpendicular to the ground line, wherein the distance between a perpendicular intersection point and a projection point of the front end of the vehicle on the ground line is a blind area distance, and the plane where the blind area target line and a focus line of the front-view camera are located is the lower boundary of the vision envelope boundary.
The boundary of the front view camera view envelope boundary is determined according to a blind area or according to the camera performance given by a front view camera manufacturer, wherein the lower boundary is set according to the requirements of a whole vehicle factory in order to meet the requirement of shooting the area beyond the blind area target, for example, the blind area target is the front end 3m of the vehicle, namely, the area beyond the front end 3m of the vehicle is required to be shot by the front view camera 1, therefore, the lower boundary of the front view camera view envelope boundary is determined by combining the blind area target with the front view camera focus, the blind area target line is positioned on the same plane according to the position line of the vehicle, and the blind area target line is determined by the blind area distance from the projection point of the front end of the vehicle on the ground to the vehicle advancing direction, and then the visual field range below the front view camera focus should contain the blind area target line, namely, the plane where the lower boundary of the front view envelope boundary of the front view is positioned passes through the focus and the blind area target line.
Referring to fig. 1, after a front view camera 1 is arranged at a proper position, a focal point O on an optical axis of the front view camera 1 is determined as a starting point, a blind area distance is 3.5m, a ground line 3 is a person-carrying ground line, a point B is a projection point of a front end of an outer contour of a vehicle 2 on the ground line, a distance between the point a and the point B is D1, a point a is a vertical intersection point of a blind area target line and the ground line, a straight line OA is made through the starting point O, then the plane where the straight line OA is located is a lower boundary of a front view camera view envelope boundary, and similarly, an upper boundary and a left boundary and a right boundary of the front view camera view envelope boundary can be determined according to the blind area target by referring to the method, or the left boundary and the right boundary and the upper boundary are given according to the manufacturer of the front view camera 1 according to performance, so that the upper boundary and the left boundary and the right boundary of the front view camera view envelope boundary are not repeated.
In a further embodiment, the ground line is a manned ground line. The ground line of a person, i.e. the ground line of a vehicle in a state of riding a driver in the vehicle, can be determined according to the empty ground line or the full ground line according to the requirements.
In another embodiment, referring to fig. 2-4, a light shield is provided, the light shield 4 is connected with a mounting base 5 of a rearview mirror in a vehicle, the light shield 4 comprises a lower base plate 401, a left vertical plate 402, a right vertical plate 403 and a rear vertical plate 404, the position of the lower base plate 401 is limited by the lower boundary determined by the method for determining the lower boundary of the view envelope boundary of the front view camera, the front end of the lower base plate 401 is contacted with a front windshield 6 and is positioned below the lower boundary of the view envelope boundary 101 of the front view camera, the front end of the front view camera is prevented from shielding the view of the front view camera 1, the rear vertical plate 404 is arranged at the front end of the front view camera, the rear vertical plate 404 is provided with an opening, the opening is positioned in front of the lens of the front view camera, the rear ends of the lower base plate 401, the left vertical plate 402 and the right vertical plate 403 are respectively connected with the rear vertical plate 404, and the lower ends of the left vertical plate 402 and the right vertical plate 403 are respectively connected with the left side and the right side of the lower base plate 401. The front ends of the left vertical plate 402, the right vertical plate 403 and the rear vertical plate 404 are connected with the front windshield 6, and have the same radian CD as the front windshield 6, and the left vertical plate 402 and the right vertical plate 403 are arranged according to the left boundary and the right boundary of the front view camera view envelope boundary 101, so that the front view camera 1 view is ensured not to be blocked by the left vertical plate 402 and the right vertical plate 403.
In a further embodiment, referring to fig. 3-4, the vertical distance between the front end of the lower bottom plate 401 and the lower boundary of the front view camera view envelope boundary 101 is 2mm, so as to prevent the error blocking of the view of the front view camera 1, the lateral distance D2 between the front end of the left vertical plate 402 and the left boundary of the front view camera view envelope boundary 101 is 2mm, and similarly, the lateral distance 2mm between the front end of the right vertical plate 403 and the right boundary of the front view camera view envelope boundary 101 is set, and a certain safety distance is set to the front view camera view envelope boundary 101.
In a further embodiment, the diameter of the opening is 3mm more than that of the lens of the front-view camera 1, and the distance between the edge of the opening and the edge of the lens of the front-view camera 1 is greater than 1.5mm, so that the shooting area of the front-view camera 1 is ensured, and the front-view camera can be adjusted according to the situation.
In another embodiment, referring to fig. 5, a method for determining a front boundary of a light shield is provided, including the steps of:
Referring to fig. 2-4, step S1, the front view camera 1 and the light shield 4 are disposed in the vehicle, and the light shield 4 is the light shield 4 described above;
s2, determining a shielding area according to a characteristic area of the instrument panel to be shielded, combining an area on the instrument panel, in which articles are placed, to form harmful reflection on a front windshield, and determining the front boundary line as the position of the surface of the instrument panel positioned at the front boundary of the shielding area;
S3, carrying out optical path analysis on light rays emitted by a focus of the front-view camera to obtain light rays reflected by the inner surface of the front windshield and then emitted to the step S2 to determine a front end boundary line;
in step S4, the boundary between the path of the light in step S3 and the lower plate 401 of the mask 4 is used as the front boundary line of the mask, and the plane in the vertical direction where the front boundary line of the mask is located is the front boundary of the mask.
The front end boundary of the front-view camera 1 determines the size of the light shield, as shown in fig. 2 and 3, the light shield 4 is arranged according to the front-view camera view envelope boundary 101, and the end of the light shield 4 is arranged according to the position of the front-view camera view envelope boundary 101, so that the front-view camera 1 is not affected by the front-view camera, referring to fig. 3, the front end of the light shield 4 is attached to the front windshield 6, the front end of the side plate is set to be the cambered surface CD with the same curvature as the front windshield 6 and is attached and overlapped with the front windshield 6, so that the size of the light shield 4 is larger, particularly when the front windshield 6 has a large inclination angle, namely, the included angle between the front windshield 6 and the horizontal direction is reduced, the front end of the light shield 4 needs to extend for a longer distance to be attached to the front windshield 6, the size of the light shield 4 is increased, and the vision and sensory feeling of a driver are affected;
Therefore, the front end boundary of the front-view camera lens hood is determined by the method for determining the front end boundary of the front-view camera lens hood according to the embodiment, when the lens hood 4 is arranged, the front end position of the front-view camera lens hood can affect stray light in a vehicle only by reaching the vertical plane where the front end boundary is located, the size of the lens hood 4 can be reduced, in the specific implementation process, after the front-view camera lens 1 is installed in the vehicle, as shown in fig. 3, generally at the position of the rearview mirror mounting base 5, after the installation is completed, the front-view camera lens vision envelope boundary 101 is determined, the lower boundary of the front-view camera lens vision envelope boundary 101 is determined by adopting the method, since the lens hood 4 is mainly arranged on the inner side of the front windshield 6, the boundary of the front-view camera lens vision envelope boundary 101 and the front windshield 6 can define the lower boundary and the left-right boundary, the stray light in the vehicle is mainly projected to the front windshield 6 through the lower part of the light shield 4, the bright light at the instrument panel can influence the front-view camera 1, and harmful reflection is formed on the front windshield 6 to influence the front-view camera 1, so when a shielding area is determined, according to the characteristic area of the instrument panel, which is required to be shielded, an area, on the front windshield, of which the harmful reflection is formed by combining articles placed on the instrument panel, the front-end boundary of the shielding area, namely the position of the surface on the instrument panel closest to the front windshield 6 is taken as the front-end boundary, and after the position of the instrument panel influencing the front-view camera 1 is determined, the light path analysis is carried out on the light emitted by the focus of the front-view camera 1, so that the light reflected by the inner surface of the front windshield 6 and emitted to the front-end boundary is obtained; the boundary between the path of the light and the lower plate 401 of the mask 4 serves as the mask front boundary line, the plane in the vertical direction of the boundary line of the front end of the light shield is the boundary of the front end of the light shield, namely, when the light shield 4 is arranged, the front end of the light shield 4 is limited at the vertical plane position of the boundary of the front end of the light shield, so that stray light emitted by an instrument panel at the boundary of the front end of the area affected by the front-view camera 1 can be shielded, the stray light emitted by a shielding area on the whole instrument panel can be shielded, and after the front end of the light shield 4 is arranged, the requirement of shielding the stray light in a vehicle can be met while the size is reduced;
Corresponding to the structure that the front end of the original light shield 4 extends to the front windshield 6, after the front end boundary of the light shield is determined, the original light shield 4 is cut off from the front end boundary of the light shield, the part close to the front windshield 6 is abandoned, and the light shield 4 at the rear side of the front end boundary of the light shield is reserved, namely, the size of the light shield 4 in the prior art is reduced.
In a further embodiment, referring to fig. 6, the instrument panel features in step S2 include an instrument panel decoration 8, a head up display 9, a center speaker 10, and an air outlet 11. The Head Up Display is a Head Up Display, which is called HUD for short, and the Instrument Panel is an Instrument Panel, which is called IP for short.
In a further embodiment, the characteristic area of the instrument panel to be shielded in the step S2 is an area of the instrument panel, which is located on one side of the interface away from the front windshield, with a vertical plane where the front end of the instrument panel near the front windshield is located as an interface, wherein light generated by the instrument panel in the area is photographed by the front-view camera and affects the operation of the front-view camera, i.e., a position on the instrument panel where stray light is generated, and a position on the instrument panel closest to the front windshield is found, and the area on the rear side of the position may affect the front-view camera, so that the area on the rear side of the interface is used as a shielding area;
In the step S2, the area where the articles are placed on the instrument panel and harmful ghosts are formed on the front windshield is an area where the vertical distance between the surface of the instrument panel and the front windshield is greater than or equal to the influence height H, some articles are placed on the instrument panel, the articles can form harmful ghosts on the front windshield, and the areas are required to be shielded, but because some positions are closer to the front windshield, the excessive glare risk is avoided, the shooting effect of the front camera is avoided, the area closer to the front windshield is not considered any more, only the area which is greater than or equal to the influence height H is taken as the shielding area, and the shielding area which is required to be shielded is determined by combining the two areas.
In a further embodiment, the influencing height H is 80mm. Those skilled in the art can adjust according to the circumstances.
In another embodiment, referring to fig. 6-9, a method for determining a front boundary of a mask is described:
referring to fig. 1-4, step S1 is completed by installing the front view camera 1 and the hood 4 in the vehicle 2;
referring to fig. 6-7, step S2 is to determine an occlusion area EFGH according to the characteristic area of the instrument panel 7 to be occluded, such as the area where the instrument panel decoration 8, the head-up display 9, the center speaker 10 and the air outlet 11 are located in fig. 6, and to combine the area where the articles are placed on the instrument panel 7 to form harmful reflection on the front windshield 6, that is, the area with the distance from the front windshield 6 being equal to or greater than the height H, where in this embodiment, H is 80mm, so as to determine the front boundary line as the position where the instrument panel surface located at the front boundary EF of the occlusion area is located;
Referring to fig. 7-8, performing optical path analysis on light emitted by a focal point O of the front-view camera 1 to obtain light reflected by the inner surface of the front windshield 6 and then directed to the front-end boundary line in step S3, wherein a light path 12 is a path of the light emitted by the light after reflection and directed to the instrument panel 7, and a straight line ST is a vertical straight line passing through the front-end boundary EF of the shielding region and is located on the front-end boundary line at an intersection point P with the surface of the instrument panel 7, and at this time, a light path 12 emitted to a P point position is analyzed as QP, and a point reflected by the inner surface of the front windshield 6 is analyzed as a Q point;
The optical path analysis may be performed using CATIA, the company OPTIS, france, or SPEOS simulation software.
In step S4, the boundary position between the light path in step S3 and the lower plate 401 of the light shield 4 is taken as the front end boundary line of the light shield, the plane in the vertical direction where the front end boundary line of the light shield is located is the front end boundary line of the light shield, as shown in fig. 7-8, the boundary position between the QP and the lower plate 401 of the light shield 4 is the front end boundary line of the light shield, and the plane in the vertical direction where the front end boundary line is located is the vertical plane passing through the boundary position, so that the front end of the light shield 4 is determined, and the requirement of shielding stray light in the vehicle can be met only by extending to the position where the front end boundary 13 of the light shield is located, namely, the part of the light shield 4 extending beyond the front end boundary 13 of the light shield in fig. 3 is cut off and removed, and after the cut off, as shown in fig. 9, the light shield 4 with reduced size is obtained, the recognition of the front view camera 1 can be prevented.
In another embodiment, referring to fig. 9-11, a vehicle includes a front view camera 1, where the front view camera 1 is connected to a rear view mirror mounting base 5 in the vehicle 2, a light shield 4 is installed at the front end of the front view camera 1, and the front end boundary of the light shield 4 determines the front end boundary by the foregoing method, so that it does not need to be attached to a front windshield 6.
In a further embodiment, referring to fig. 10-11, a defrosting and defogging line 14 is installed on the inner side of the front windshield 6, the defrosting and defogging line is located in the shooting area of the front-view camera 1, the space surrounded by the light shield 4 and the front windshield 6 is not closed, the temperature difference between the inside and the outside of the vehicle can cause the surface of the front windshield 6 in the shooting area of the front-view camera 1 to be fogged in extreme weather, the defrosting and defogging line 14 is arranged on the inner surface of the front windshield 6 in the small area to cope with the fogging condition, and then the image of the defrosting and defogging line 14 in the imaging of the front-view camera 1 is deducted through software in the prior art.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. A method for determining the front end boundary of a light shield is characterized by comprising the following steps:
s1, arranging a front-view camera and a light shield in a vehicle;
s2, determining a shielding area according to a characteristic area of the instrument panel to be shielded, combining an area on the instrument panel, in which articles are placed, to form harmful reflection on a front windshield, and determining the front boundary line as the position of the surface of the instrument panel positioned at the front boundary of the shielding area;
s3, carrying out optical path analysis on light rays emitted by a focus of the front-view camera to obtain light rays which are reflected by the inner surface of the front windshield and then are emitted to the front-end boundary line in the step S2;
and S4, taking the boundary position between the path of the light rays in the step S3 and the lower bottom plate (401) of the light shield (4) as a front end boundary line of the light shield, wherein a plane in the vertical direction of the front end boundary line of the light shield is the front end boundary of the light shield.
2. A method of determining the front end boundary of a light shield according to claim 1, characterized in that the light shield (4) is connected to a vehicle interior mirror mounting base (5), the light shield (4) comprising a lower floor (401), a left riser (402), a right riser (403) and a rear riser (404), the position of the lower floor (401) being defined by the lower boundary determined by the method of claim 1;
The rear vertical plate (404) is arranged at the front end of the front-view camera, the rear vertical plate (404) is provided with an opening, the opening is positioned in front of the front-view camera lens, the rear ends of the lower bottom plate (401), the left vertical plate (402) and the right vertical plate (403) are respectively connected with the rear vertical plate (404), and the lower ends of the left vertical plate (402) and the right vertical plate (403) are respectively connected with the left side and the right side of the lower bottom plate (401).
3. A method of determining the front edge boundary of a light shield according to claim 2, wherein the lower plate (401) is defined by a lower boundary determined by:
the method comprises the steps of determining a ground line where a vehicle is located, determining a blind area target line, wherein the blind area target line is perpendicular to the ground line, the distance between a perpendicular intersection point and a projection point of the front end of the vehicle on the ground line is a blind area distance, and the plane where the blind area target line and a focus connecting line of the front-view camera are located is the lower boundary of a visual field envelope boundary.
4. A method of determining the front boundary of a mask according to claim 3, wherein the ground line is an on-board ground line.
5. A method of determining the front end boundary of a light shield according to claim 3, wherein the vertical distance between the front end of the lower plate (401) and the lower boundary of the front view camera field envelope boundary is 2mm.
6. The method according to any one of claims 1 to 5, wherein the dial features in the step S2 include a dashboard decoration, a head up display, a center speaker, and an air outlet.
7. The method for determining the front end boundary of a light shield according to any one of claims 1 to 5, wherein the characteristic area of the instrument panel to be shielded in the step S2 is an instrument panel area located on a side of the interface away from the front windshield, wherein the instrument panel area is defined by a vertical plane in which the instrument panel is located near the front end of the front windshield;
In the step S2, the area where the articles are placed on the instrument panel and harmful reflection is formed on the front windshield is the area where the vertical distance between the surface of the instrument panel and the front windshield is greater than or equal to the influence height H.
8. A method of determining the front boundary of a mask according to claim 7, wherein the height of influence H is 80mm.
9. A vehicle comprises a front-view camera and is characterized in that the front-view camera is connected with a mounting base of a rearview mirror in the vehicle, a light shield is mounted at the front end of the front-view camera, and the front-end boundary of the light shield is determined by the method for determining the front-end boundary of the light shield according to any one of claims 1-8.
10. A vehicle according to claim 9, wherein a defrost defogging line is mounted on the inside of the front windshield, the defrost defogging line being located within the imaging area of the front view camera.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106184028A (en) * | 2016-07-08 | 2016-12-07 | 北京长城华冠汽车科技股份有限公司 | Front-facing camera angular field of view limits method, front-facing camera shade and automobile |
| DE102017006790A1 (en) * | 2017-07-18 | 2018-01-04 | Daimler Ag | Device for optical detection of the environment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102010023593A1 (en) * | 2010-06-12 | 2011-12-15 | Conti Temic Microelectronic Gmbh | Optical device with a bifocal optical element and a mirror element |
| DE102010052472A1 (en) * | 2010-11-26 | 2012-05-31 | Calesco/Backer Bhv Ab | Arrangement for an image acquisition device in a vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106184028A (en) * | 2016-07-08 | 2016-12-07 | 北京长城华冠汽车科技股份有限公司 | Front-facing camera angular field of view limits method, front-facing camera shade and automobile |
| DE102017006790A1 (en) * | 2017-07-18 | 2018-01-04 | Daimler Ag | Device for optical detection of the environment |
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