Vehicle and shading control method thereof

Abstract

The invention discloses a vehicle and a shading control method thereof.The vehicle comprises a front windshield and a seat opposite to the front windshield, the vehicle further comprises a sun shield for shielding light for a driver and passengers, the sun shield can rotate relative to the seat, the front windshield is provided with a color changing area, and the shading control method comprises the steps that whether the sun shield rotates or not is judged; if the driver and the passengers rotate the sun shield to shield light, color changing information is obtained; and adjusting the color-changing area according to the color-changing information. The invention provides a vehicle and a shading control method thereof. The technical problem that an existing vehicle sun shield is poor in shading effect is solved.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and specifically relates to a vehicle and a shading control method thereof. Background Art

[0002] When a vehicle is driving, the sun or external light sources will pass through the front windshield, affecting the front-seat driver and passengers' observation of road conditions. The front-seat driver and passengers block the light by turning the sun visor to avoid shining into their eyes. However, when the light is too strong, or when driving in the morning or evening, the sun is close to the horizon, and light enters the vehicle from a low angle in front, even if the sun visor is turned to the maximum angle, it cannot block all the light. Some light still shines into the driver and passengers' eyes, affecting them, causing them to be dazzled, and making it impossible for them to concentrate on observing road conditions.

[0003] There is a technical solution that blocks light by setting the front windshield to change color. Specifically, a color-changing layer is provided in the front windshield. When the light intensity in the environment reaches the corresponding set value, the control system controls the front windshield to change color to block light. However, the transmittance adjustment range of the color-changing glass is limited. When it is completely dark, there is still a certain amount of light transmittance. It cannot solve the problem of local strong light or high-brightness scenes in summer, when high-intensity light passes through the front windshield and affects the front passengers. Moreover, the color-changing glass has a large color-changing area, and there is a response time for the overall color change. It cannot provide timely shading for the driver and passengers when they need shading. Summary of the Invention

[0004] The present application provides a vehicle and a shading control method thereof to solve the technical problem of poor shading effect of existing vehicle sun visors.

[0005] The first purpose of this application is to provide a vehicle shading control method, the technical solution adopted is: A vehicle shading control method includes a front windshield and a seat disposed opposite the front windshield. The vehicle also includes a sun visor for shielding light from a driver and passenger, the sun visor being rotatable relative to the seat. The front windshield is provided with a color-changing area. The shading control method includes: Determine whether the driver or passenger has turned the sun visor to block light; If the driver or passenger turns the sun visor to block the light, the color change information is obtained; The color change area is adjusted according to the color change information.

[0006] The shading control method in the first object of the present application also includes the following additional technical features: Obtaining color change information includes: Get the status information of the sun visor; Get the status information of the light; Calculate the shading area according to the state information of the sun visor and the state information of the light; Determine whether the shading area meets the shading needs of the driver and passengers; If the shading area meets the shading requirements of the driver and passengers, the color change information is to keep the color change area unchanged; If the shading area does not meet the shading requirements of the driver and passengers, the color change information is calculated based on the light status information, the shading area and the driver and passengers' status information.

[0007] Calculating the shading area based on the visor status information and the light status information includes: The status information of the sun visor includes: the shape, area and rotation angle of the sun visor; The state information of the light includes: the irradiation angle of the light; Obtain the distance information between the sun visor and the driver and passengers; A projection model is established based on the distance information, illumination angle, shape, area, and rotation angle of the sun visor to obtain the projection range of the sun visor at the position of the driver and passenger; Determine the shading area based on the projection range.

[0008] The color change information calculated based on the light status information, the shading area, and the status information of the driver and passengers includes: The status information of the driver and passenger includes: the facial information of the driver and passenger; Calculate the area to be shaded based on the facial information of the driver and the shaded area; The color change information is calculated based on the light status information and the area to be shielded.

[0009] The area to be shaded is calculated based on the facial information of the driver and the shaded area, including: The facial information of the driver and passenger includes: the area around the eyes of the driver and passenger; Obtain the intersection area of ​​the two according to the eye area and the shading area; The area to be shaded is the remaining area obtained by subtracting the intersection area from the eye area.

[0010] The color change information calculated based on the light status information and the area to be shielded includes: The light status information includes: the light irradiation angle and the light intensity; Calculate the projection of the area to be shaded on the front windshield according to the illumination angle of the light; Determining color change information based on the projection of the area to be shielded on the front windshield; The color change information includes: the shape, position, and area of ​​the color change area.

[0011] Determining whether the shading area meets the shading needs of the driver and passengers includes: Acquiring facial information of the driver and passenger, including the driver and passenger's peri-eye area and a brightness value of the peri-eye area, and determining that the shading area does not meet the shading requirements of the driver and passenger if the brightness value is greater than or equal to a set value; If the brightness value is less than the set value, it is determined whether the shading area meets the shading needs of the driver and passengers based on the eye area and the shading area.

[0012] Judging whether the shading area meets the shading needs of the driver and passengers based on the eye area and the shading area includes: Calculate the overlap between the eye area and the light-shielding area; If the overlap is greater than or equal to the set value, the shading area meets the shading needs of the driver and passengers; If the overlap is less than the set value, the shading area does not meet the shading needs of the driver and passengers.

[0013] The second object of the present application is to provide a vehicle, applying the shading control method as described in the first object, and the technical solution adopted is: The vehicle includes a vehicle body, and the sun visor includes an upper edge rotatably connected to the vehicle body and an extension connected to the upper edge. The extension is provided with an installation cavity and a deformable part arranged in the installation cavity at one end away from the upper edge. The deformable part has a blocking state in which it partially extends out of the installation cavity to block light.

[0014] The vehicle in the second object of this application also includes the following additional technical features: The sun visor is provided with a control panel through which the driver and passengers control the color changing area.

[0015] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows: 1. This application obtains color change information when the driver and passengers rotate the sun visor to block the light, and adjusts the color change area according to the color change information to achieve a collaborative shading mechanism of the sun visor physically blocking the light and the color change area blocking the light. When the driver and passengers are exposed to strong light, the sun visor is rotated to block most of the light, providing timely shading for the drivers and passengers. By adjusting the color change area according to the color change information and cooperating with the sun visor to block the light, insufficient shading of the sun visor, resulting in light leakage, reducing the light exposure to the drivers and passengers, and avoiding affecting the drivers and passengers' observation of road conditions.

[0016] 2. As a preferred embodiment of this application, by setting a function to determine whether the shading area meets the shading requirements of the driver and passengers, the accuracy of the shading is improved, the color-changing area is prevented from changing color at night or under unnecessary circumstances, and the driver and passengers can clearly observe the road conditions. By determining the shading requirements to control the color-changing area, the inefficient consumption of resources can be avoided. The color-changing area does not need to remain dark at all times, and is only adjusted when the shading requirements are detected to be unmet. This reduces the vehicle's energy consumption and can also reduce the frequency of color-changing area adjustments, extending the service life of the color-changing area.

[0017] Furthermore, by establishing a projection model to obtain the projection range of the sun visor, the shading area formed by the sun visor under the irradiation of light can be accurately calculated, thereby improving the accuracy of the shading area calculation.

[0018] 4. As a preferred embodiment of the present application, by calculating the area to be shaded based on the facial information of the driver and passenger and the shading area, the shading of the driver and passenger's face by the shading plate can be accurately calculated, and then the area to be shaded can be determined, thereby improving the accuracy of shading, avoiding excessive shading of unnecessary areas (such as the body), and improving the balance between light transmission and shading.

[0019] Furthermore, by obtaining the intersection area of ​​the periocular area and the shading area, the coverage area of ​​the shading area is determined. By obtaining the remaining area, the part of the periocular area not covered by the shading area is accurately calculated. This can accurately block the parts that are most sensitive to light, rather than the entire face or body, so that the color-changing area is used first to protect key parts, thereby improving the shading efficiency.

[0020] Furthermore, by determining the color change information based on the projection of the area to be shaded on the front windshield, the area around the eyes can be accurately shaded, which not only avoids the light leakage problem caused by the angle deviation or insufficient area of ​​the sun visor, but also prevents the interference of large-area shading on the field of vision, greatly improves the overlap between the color change area and the light trajectory, and significantly reduces the impact of strong light on the area around the eyes.

[0021] 5. As a preferred embodiment of the present application, by setting up a comparison between the brightness value and the set value to determine whether the shading area meets the shading needs of the driver and passengers, the risk of misjudgment when the light actually interferes with the area around the eyes is reduced, and unnecessary color change operations in the color change area when the light will not cause any impact are avoided, thereby significantly improving the accuracy and efficiency of shading demand judgment, reducing energy consumption while ensuring the visual comfort and driving safety of the driver and passengers.

[0022] Furthermore, by calculating the degree of overlap between the area around the eyes and the shading area, the shading demand is quantified into a specific degree of overlap, avoiding errors caused by subjective judgment or a single parameter, making the evaluation of the shading effect more objective and accurate. By setting a set range, invalid or redundant shading judgments can be effectively filtered out, preventing the misjudgment that the light does not fully cover the area around the eyes, and avoiding the shading area over-covering unnecessary parts and triggering unnecessary adjustments, thereby reducing resource waste and energy consumption.

[0023] 6. The present application provides a deformable member, and provides the deformable member with a blocking state in which it partially extends out of the mounting cavity to block light. The deformable member is used to expand the shading range of the sun visor and improve the shading range of the sun visor.

[0024] Furthermore, the sun visor is equipped with a control panel for the driver and passengers to actively control the color-changing area. The shape, position, area and transmittance of the color-changing area can be adjusted instantly according to personal sitting posture, light changes and usage habits to meet differentiated shading needs, make up for the limitations of automatic adjustment, and reduce the anxiety of relying on intelligent adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 This is a flow chart of a shading control method according to one embodiment of the present application; Figure 2 This is a schematic diagram of the process of obtaining color change information under one embodiment of the present application; Figure 3 This is a schematic diagram of the installation of the sun visor and the front windshield in one embodiment of the present application; Figure 4 This is a schematic structural diagram of a front windshield according to one embodiment of the present application; Figure 5 This is a front view of the sun visor under one embodiment of the present application; Figure 6 This is a bottom view of the lower sun visor according to one embodiment of the present application.

[0026] Reference numerals: 1. Front windshield; 11. Color-changing area; 111. Color-changing part; 2. Sun visor; 21. Upper edge; 22. Extension; 221. Mounting cavity; 222. Deformation part; 23. Control panel. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0028] The following description sets forth many specific details to facilitate a thorough understanding of the present application. However, the present application may also be implemented in other ways than those described herein, and therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features of each embodiment may be combined with each other unless there is a conflict.

[0029] like Figure 1 、 Figure 3As shown, a vehicle shading control method includes a front windshield 1 and a seat arranged opposite the front windshield (not shown in the drawings), the vehicle also includes a sun visor 2 for shielding light for the driver and passengers, the sun visor 2 can rotate relative to the seat, the front windshield 1 is provided with a color-changing area 11, and the shading control method includes: Determine whether the driver or passenger has turned the sun visor to block light; If the driver or passenger turns the sun visor to block the light, the color change information is obtained; The color change area is adjusted according to the color change information.

[0030] The present application obtains color change information when the driver and passengers rotate the sun visor to block the light, and adjusts the color change area according to the color change information to achieve a collaborative shading mechanism of the sun visor physically blocking the light and the color change area blocking the light. When the driver and passengers are exposed to strong light, the sun visor is rotated to block most of the light, providing timely shading for the drivers and passengers. By adjusting the color change area according to the color change information and cooperating with the sun visor to block the light, insufficient shading of the sun visor, resulting in light leakage, reducing the light exposure to the drivers and passengers, and avoiding affecting the drivers and passengers' observation of road conditions.

[0031] It is clear to those skilled in the art that this application does not limit the method of determining whether the sun visor has rotated. It may be possible to set a potentiometer-type angle sensor on the rotating shaft of the sun visor and determine whether rotation has occurred by obtaining the value of the sensor, or to capture the status of the sun visor by using a camera arranged in the vehicle and identify whether rotation has occurred based on the image.

[0032] At the same time, in order to accurately judge whether the driver turns the sun visor to block the light, the present application sets a photoelectric sensor on the sun visor's shading surface. When it detects that the brightness of the shading surface exceeds the set threshold (such as , setting a threshold that is dynamically adjusted according to the impact of brightness on the eyes of the person), obtaining the rotation angle of the sun visor and the vehicle's forward direction and the direction of light to comprehensively judge whether the driver and passengers rotate the sun visor to block light, to avoid the driver and passengers mistakenly operating the sun visor and judging that the sun visor blocks light, which in turn causes the color change area to change.

[0033] As a preferred embodiment of the present application, Figure 1 、 Figure 2 As shown, obtaining color change information includes: Get the status information of the sun visor; Get the status information of the light; Calculate the shading area according to the state information of the sun visor and the state information of the light; Determine whether the shading area meets the shading needs of the driver and passengers; If the shading area meets the shading requirements of the driver and passengers, the color change information is to keep the color change area unchanged; If the shading area does not meet the shading requirements of the driver and passengers, the color change information is calculated based on the light status information, the shading area and the driver and passengers' status information.

[0034] By determining whether the shading area meets the shading needs of the driver and passengers, the accuracy of the shading is improved, and the color-changing area is prevented from changing color at night or under unnecessary circumstances, ensuring that the driver and passengers can clearly observe the road conditions. Controlling the color-changing area by determining the shading needs can avoid inefficient resource consumption. The color-changing area does not need to remain dark at all times, and is only adjusted when the shading needs are detected to be unmet. This reduces the vehicle's energy consumption and can also reduce the frequency of color-changing area adjustments, extending the service life of the color-changing area.

[0035] As a preferred embodiment 1 of the following implementation method, calculating the shading area according to the state information of the sun visor and the state information of the light includes: The status information of the sun visor includes: the shape, area and rotation angle of the sun visor; The state information of the light includes: the irradiation angle of the light; Obtain the distance information between the sun visor and the driver and passengers; A projection model is established based on the distance information, illumination angle, shape, area, and rotation angle of the sun visor to obtain the projection range of the sun visor at the position of the driver and passenger; Determine the shading area based on the projection range.

[0036] By establishing a projection model to obtain the projection range of the sun visor, the shading area formed by the sun visor under the illumination of light can be accurately calculated, thereby improving the accuracy of the shading area calculation.

[0037] As a preferred specific example 1 under embodiment 1, the present application obtains the length, width, height, and distance from the visor to the driver and occupant using a sensor, by measuring the visor, or by obtaining an image of the visor and processing the image, thereby determining its shape and area. A three-dimensional rectangular coordinate system is established based on the vehicle interior space, with the X-axis representing the vehicle width, the Y-axis representing the vehicle length, and the Z-axis representing the vertical direction. All parameters are unified within this coordinate system. The coordinates of each vertex of the visor in its initial state are determined in the coordinate system. The coordinates of each vertex of the rotated visor are calculated using the rotation angle, or the coordinates of each vertex of the rotated visor are directly obtained. The visor in three-dimensional space is projected onto a two-dimensional plane at the angle of illumination of the light. After calculating the projection of all vertices of the visor, a convex hull algorithm (such as the Graham scan method) is used to determine the circumscribed polygon of the set of projection points. This polygon represents the projection range of the visor at the driver and occupant's position, thereby determining the shaded area.

[0038] It is clear to those skilled in the art that this application does not limit the method of obtaining the angle of illumination of light. It can be done by arranging multiple groups of photosensors on the roof or front windshield, etc., and using the difference in light intensity received by the sensors to calculate the angle of illumination of light, or by setting a sun tracking sensor with a filter to track the angle of illumination of light, or by using a vehicle-mounted camera to capture images of the sky or light source, and using image processing methods to identify the position of the sun and the angle of illumination of the light, or by using a positioning system to obtain the vehicle position and time and combine it with astronomical algorithms and the orientation of the vehicle body to calculate the angle of illumination of light relative to the vehicle.

[0039] As a preferred embodiment 2 of the following implementation mode, the color change information is calculated based on the light state information, the shading area, and the driver and passenger state information, including: The status information of the driver and passenger includes: the facial information of the driver and passenger; Calculate the area to be shaded based on the facial information of the driver and the shaded area; The color change information is calculated based on the light status information and the area to be shielded.

[0040] By calculating the area to be shaded based on the facial information of the driver and passengers and the shading area, it is possible to accurately calculate the shading of the driver and passengers' faces by the shading plate, and then determine the area to be shaded, improve the accuracy of shading, avoid excessive shading of non-essential areas (such as the body), and improve the balance between light transmission and shading.

[0041] In embodiment 2, the calculation method of the area to be shielded may be any one of the following specific examples: Specific Example 2: Calculating the area to be shaded based on the facial information of the driver and the shaded area includes: The facial information of the driver and passenger includes: the area around the eyes of the driver and passenger; Obtain the intersection area of ​​the two according to the eye area and the shading area; The area to be shaded is the remaining area obtained by subtracting the intersection area from the eye area.

[0042] By obtaining the intersection area of ​​the periocular area and the shading area, the coverage area of ​​the shading area is determined. By obtaining the remaining area, the part of the periocular area that is not covered by the shading area is accurately calculated. This can accurately block the parts that are most sensitive to light, rather than the entire face or body, so that the color-changing area is used first to protect key parts, thereby improving shading efficiency.

[0043] Preferably, calculating the color change information according to the light state information and the area to be shielded includes: The light status information includes: the light irradiation angle and the light intensity; Calculate the projection of the area to be shaded on the front windshield according to the illumination angle of the light; Determining color change information based on the projection of the area to be shielded on the front windshield; The color change information includes: the shape, position, and area of ​​the color change area.

[0044] By setting the color change information based on the projection of the area to be shaded on the front windshield, the area around the eyes can be accurately shaded, which not only avoids the light leakage problem caused by the angle deviation or insufficient area of ​​the sun visor, but also prevents the interference of large-area shading on the field of vision. The overlap between the color change area and the light trajectory is greatly improved, which significantly reduces the impact of strong light on the area around the eyes.

[0045] As a preferred example 1 under Specific Example 2, this application uses a camera installed inside a vehicle to capture facial information of the driver or passenger in real time. A rectangular or elliptical area 1.5 times the width of the eyes is expanded outward from the eyes to determine the peripheral area. The values ​​of the peripheral area are converted to physical coordinates within the vehicle and then aligned with the three-dimensional rectangular coordinates of the light-shielding area. Both the peripheral area and the light-shielding area are represented as polygons or geometric shapes. A polygonal intersection algorithm is used to calculate the intersection of the two. The polygon of the intersection is then subtracted from the peripheral area polygon using a set difference operation to obtain the area to be shaded. If the area to be shaded is disjoint (e.g., if both eyes have light leakage), each independent area to be shaded is calculated and its three-dimensional coordinates are determined. A perspective projection of the area to be shaded on the front windshield is obtained based on geometric projection and the angle of light illumination. The projection is represented as a polygon or geometric shape, and its coordinates are obtained. Based on the coordinates, color change information of the color-changing area is determined, including its shape, position, and area. Furthermore, color change information is obtained based on the light intensity, which is the transmittance.

[0046] Specific Example 3: Calculating the area to be shielded based on the facial information of the driver and the shielded area includes: The facial information of the driver and passenger includes: the illuminated area of ​​the driver and passenger's face and the area around the eyes; Obtain the intersection area of ​​the two according to the periocular area and the illumination area; The area to be shaded is the intersection area.

[0047] It is clear to those skilled in the art that the application does not limit the multiples by which the periorbital area expands outward with the eyes as the center, and the area can be automatically adjusted according to the facial features of the driver and passenger.

[0048] As a preferred embodiment 2 of the present application, judging whether the shading area meets the shading needs of the driver and passenger includes: obtaining the facial information of the driver and passenger, the facial information of the driver and passenger includes: the area around the eyes of the driver and passenger and the brightness value of the area around the eyes, the brightness value is greater than or equal to the set value, determining that the shading area does not meet the shading needs of the driver and passenger, the brightness value is less than the set value, and judging whether the shading area meets the shading needs of the driver and passenger based on the area around the eyes and the shading area. Preferably, the lighting information is the brightness of the area around the eyes, the image of the driver and passenger is obtained by a camera, the brightness of the area around the eyes is obtained by image processing, and the set value is less than or equal to 1500. .

[0049] By setting a comparison between the brightness value and the set value to determine whether the shading area meets the shading needs of the driver and passengers, the risk of misjudgment when light actually interferes with the area around the eyes is reduced, and unnecessary color changes in the color-changing area when the light will not cause any impact are avoided, thereby significantly improving the accuracy and efficiency of shading demand judgment, reducing energy consumption while ensuring the visual comfort and driving safety of the driver and passengers.

[0050] Furthermore, judging whether the shading area meets the shading requirements of the driver and passenger based on the eye area and the shading area includes: Calculating the degree of overlap between the eye area and the shading area; If the overlap is greater than or equal to the set value, the shading area meets the shading needs of the driver and passengers; If the overlap is less than the set value, the shading area does not meet the shading needs of the driver and passengers.

[0051] By calculating the degree of overlap between the area around the eyes and the shading area, the shading demand is quantified into a specific degree of overlap, avoiding errors caused by subjective judgment or a single parameter, making the evaluation of the shading effect more objective and accurate. By setting a set range, invalid or redundant shading judgments can be effectively filtered out, preventing the misjudgment that the light does not fully cover the area around the eyes, and avoiding unnecessary adjustments triggered by excessive coverage of non-essential parts by the shading area, thereby reducing resource waste and energy consumption.

[0052] This application establishes a three-dimensional rectangular coordinate system based on the vehicle's interior space, with the X-axis representing the vehicle's width, the Y-axis representing the vehicle's length, and the Z-axis representing the vertical direction. All parameters are unified within this coordinate system. By installing a camera inside the vehicle to capture the driver's or occupant's facial information in real time, a rectangular or elliptical area centered on the eyes and extending outward by 1.5 times the width of the eyes is defined as the periocular area. The values ​​for the periocular area are converted into physical coordinates within the vehicle and then aligned with the three-dimensional rectangular coordinate system of the shading area. The overlap is calculated as the ratio of the overlapping area of ​​the periocular area and the shading area to the combined total area, or alternatively, the ratio of the overlapping area of ​​the periocular area and the shading area to the total area of ​​the periocular area. This application determines a set value based on different scenarios. For example, on a sunny day at noon, the set value is 0.9. On cloudy days or in tunnels, the set value ranges from 0.6 to 0.8 (inclusive). A set value of 0.7 is also configurable, and the user can adjust the set value within a range of 0.5 to 0.9.

[0053] The present application also discloses a vehicle, to which the shading control method disclosed in the present application is applied. The vehicle includes a vehicle body (not shown in the accompanying drawings), such as Figure 3 、 Figure 5 、 Figure 6 As shown, the sun visor 2 includes an upper edge 21 that is rotatably connected to the vehicle body and an extension portion 22 connected to the upper edge 21. The extension portion 22 is provided with a mounting cavity 221 at one end away from the upper edge 21, and a deformable member 222 disposed in the mounting cavity 221. The deformable member 222 has a blocking state in which it partially extends out of the mounting cavity 221 to block light. By providing the deformable member 222 and providing the deformable member 222 with a blocking state in which it partially extends out of the mounting cavity 221 to block light, the present application expands the shading range of the sun visor 2 through the deformable member 222, thereby improving the shading range of the sun visor 2.

[0054] Furthermore, the extension portion 22 is provided with a plurality of mounting cavities 221, which are spaced apart along the width of the sun visor 2. A plurality of deformable members 222 are provided, each corresponding to one of the mounting cavities 221. The deformable members 222 are airbags. The sun visor 2 is also provided with an inflatable member for inflating the airbags. After inflation, the airbags partially extend out of the mounting cavities 221, causing the extension portion 22 to be arranged in a wavy shape at the end facing away from the upper edge 21. This wavy shape reduces the scattering rate of light when the sun visor 2 blocks light.

[0055] Preferably, when the sun visor 2 is provided with a deformable member 222, in the method disclosed in Embodiment 2, when the overlap is less than a set value and the difference from the set value is within the range of 0.1-0.15 (inclusive), the deformable member is controlled to extend out of the mounting cavity to provide light blocking. When the overlap is less than the set value and the difference from the set value is outside the range of 0.1-0.15 (inclusive), the deformable member is concealed from the mounting cavity, and light blocking is provided by controlling the color change area using the color change information, thereby increasing the sun visor's light blocking range and optimizing coordinated light blocking.

[0056] As the third preferred embodiment of this application: Figure 3 、 Figure 4 As shown, the front windshield 1 includes two layers of glass and a color-changing member 111 disposed between the two layers of glass. The color-changing member 111 is provided with an inductive polymer. The color-changing member 111 extends in a strip shape along the width direction of the vehicle. A plurality of color-changing members 111 are provided in the front windshield 1. Figure 4 In the vertical direction in the vehicle), a plurality of color-changing parts 111 are sequentially arranged to form a color-changing area 11. The color-changing parts 111 are connected to the power supply device in the vehicle. By controlling the corresponding color-changing parts 111 to be energized, the inductive polymer changes color after being energized to achieve shading of the color-changing area 1. In the control method of the present application, precise shading in coordination with the sun visor 2 is achieved by controlling the corresponding number and position of the color-changing parts 111 to be energized. In the present application, the area of ​​the color-changing area 11 is not limited. The color-changing area 11 can cover the entire color-changing glass 1 or the color-changing area 11 can be set for the area where the sun visors 2 of the main driver and the co-driver are located. The size of the color-changing area 11 is determined by simulating light irradiating the front windshield 1 and using the calculation method in the control method disclosed in the present application. The present application does not limit this.

[0057] In a vehicle disclosed in the present application, the active control of the color changing zone may be any one of the following embodiments: Implementation method 4: Figure 3 、 Figure 5 As shown, the sun visor 2 is equipped with a control panel 23, through which the driver and passenger can control the color-changing area 11. Furthermore, the control panel 23 can be a touch panel or a button provided on the sun visor 2. By equipping the sun visor 2 with a control panel, the driver and passenger can actively control the color-changing area 11. The shape, position, area, and light transmittance of the color-changing area 11 can be adjusted instantly according to personal sitting posture, light changes, and usage habits, meeting differentiated shading needs, overcoming the limitations of automatic adjustment, and reducing the anxiety of relying on intelligent adjustment.

[0058] Embodiment 5: This embodiment 5 is not shown in the figure. The vehicle is provided with a control panel, and the control panel has an adjustment area for controlling the color change area. It will be clear to those skilled in the art that the adjustment area can be a touch area on the panel, or the control panel includes a display screen and operation buttons located below the display screen, and the adjustment area is a button for controlling the color change area.

[0059] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0060] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0061] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A vehicle shading control method, characterized in that: The vehicle includes a front windshield and a seat disposed opposite the front windshield, the vehicle also includes a sun visor for shielding light for a driver and passenger, the sun visor being rotatable relative to the seat, the front windshield being provided with a color-changing area, and the shading control method comprising: Determining whether the driver or passenger rotates the sun visor to block light; If the driver or passenger rotates the sun visor to block the light, obtaining color change information; The color change area is adjusted according to the color change information.

2. The vehicle shading control method according to claim 1, characterized in that: The obtaining of color change information includes: Obtaining status information of the sun visor; Acquiring state information of the light; Calculating a shading area according to the state information of the sun visor and the state information of the light; Determining whether the shading area meets the shading requirements of the driver and passenger; If the shading area meets the shading requirements of the driver and passenger, the color change information is to keep the color change area unchanged; If the shading area does not meet the shading requirements of the driver and passenger, the color change information is calculated based on the state information of the light, the shading area, and the state information of the driver and passenger.

3. The vehicle shading control method according to claim 2, characterized in that: The calculating of the shading area according to the state information of the sun visor and the state information of the light comprises: The state information of the sun visor includes: the shape, area and rotation angle of the sun visor; The state information of the light includes: the irradiation angle of the light; Obtaining distance information between the sun visor and the driver and passenger; Establishing a projection model based on the distance information, the illumination angle, the shape, area, and rotation angle of the sun visor to obtain a projection range of the sun visor at the position of the driver and passenger; The shading area is determined according to the projection range.

4. The vehicle shading control method according to claim 2, characterized in that: The calculating of the color change information according to the state information of the light, the shading area, and the state information of the driver and passenger includes: The status information of the driver and passenger includes: facial information of the driver and passenger; Calculating a to-be-shaded area based on the facial information of the driver and passenger and the shading area; The color change information is calculated according to the state information of the light and the area to be shielded.

5. The vehicle shading control method according to claim 4, characterized in that: The calculating of the to-be-shaded area according to the facial information of the driver and passenger and the shading area includes: The facial information of the driver and passenger includes: the area around the eyes of the driver and passenger; Obtaining an intersection area of ​​the peri-eye area and the shading area according to the peri-eye area and the shading area; The area to be shielded is the remaining area obtained by subtracting the intersection area from the area around the eye.

6. The vehicle shading control method according to claim 5, characterized in that: The calculating of the color change information according to the state information of the light and the area to be shielded includes: The state information of the light includes: the irradiation angle of the light and the intensity of the light; Calculating the projection of the area to be shielded on the front windshield according to the illumination angle of the light; determining the color change information according to a projection of the area to be shielded on the front windshield; The color change information includes: the shape, position, and area of ​​the color change area.

7. The vehicle shading control method according to claim 2, characterized in that: The determining whether the shading area meets the shading requirements of the driver and passenger includes: Acquiring facial information of the driver and passenger, the facial information of the driver and passenger including an area around the eyes of the driver and passenger and a brightness value of the area around the eyes, and determining that the shading area does not meet the shading requirement of the driver and passenger if the brightness value is greater than or equal to a set value; If the brightness value is less than a set value, it is determined whether the shading area meets the shading requirements of the driver and passenger based on the peri-eye area and the shading area.

8. The vehicle shading control method according to claim 6, characterized in that: The determining, based on the peri-eye area and the shading area, whether the shading area meets the shading requirements of the driver and passenger includes: Calculating the degree of overlap between the eye area and the light-shielding area; If the overlap is greater than or equal to a set value, the shading area meets the shading requirements of the driver and passenger; If the overlap is less than the set value, the shading area does not meet the shading requirements of the driver and passengers.

9. A vehicle, applying the vehicle shading control method according to claims 1 to 8, characterized in that: The vehicle includes a vehicle body, the sun visor includes an upper edge rotatably connected to the vehicle body and an extension connected to the upper edge, the extension is provided with an installation cavity and a deformable member arranged in the installation cavity at one end away from the upper edge, and the deformable member has a blocking state in which it partially extends out of the installation cavity to block the light.

10. A vehicle according to claim 9, wherein the sun visor is provided with a control panel, and the driver and passenger controls the color-changing area through the control panel.

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