Windshield capable of automatically shading sun and control method thereof

Abstract

The invention discloses a windshield capable of automatically shading and a control method thereof.According to the control method of the windshield capable of automatically shading, a plurality of pieces of electrochromic glass are laid on a front windshield, and the control method comprises the following steps that vehicle position information is obtained, sun azimuth information at the current vehicle position is obtained, and the position information of the vehicle is obtained; and acquiring human eye position information of people in the vehicle, acquiring a projection position of sunlight acting on human eyes on the front windshield according to the vehicle position information, the sun azimuth information and the human eye position information, and controlling the brightness of the electrochromic glass at the projection position. According to the windshield capable of automatically shading and the control method thereof, the brightness of the electrochromic glass at the projection position of sunlight acting on human eyes on the front windshield is controlled, the brightness of the electrochromic glass at the non-projection position is not changed, and a stable and safe driving view is provided.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive sunshade, and more specifically, to a windshield capable of automatically shading and its control method. Background Art

[0002] Traditional automotive windshields do not have a sunshading function themselves. They need to be used in conjunction with a manual windshield sunshade to block the direct sunlight from shining into the eyes of the driver and passengers, thereby improving the safety of driving. However, due to the different angles of sunlight irradiation, the driving direction of the vehicle, and the height of the driver, it is difficult to completely and effectively block the sunlight with a non-adjustable sunshade. At the same time, during the driving process of the vehicle (at high speed), if the driver folds the sunshade with one hand (or both hands) off the steering wheel, it will cause distraction of attention and increase the potential risk of unsafe driving. Summary of the Invention

[0003] The purpose of the present invention is to provide a windshield capable of automatically shading and its control method, which can eliminate the sunshade and its accessories, and has a simple structure, reasonable design, high versatility, and high safety, providing a more competitive technical solution for future autonomous driving or driverless driving stages.

[0004] In order to achieve the above purpose, the control method of the windshield capable of automatically shading of the present invention lays multiple electrochromic glasses flat on the front windshield, including the following steps:

[0005] Obtain vehicle position information;

[0006] Obtain the sun azimuth information at the current vehicle position;

[0007] Obtain the eye position information of the people inside the vehicle;

[0008] Obtain the projection position of the sunlight acting on the eyes on the front windshield according to the vehicle position information, the sun azimuth information, and the eye position information, and control the brightness of the electrochromic glass at the projection position.

[0009] In some embodiments of the above control method of the windshield capable of automatically shading, the vehicle position information includes longitude and latitude information, altitude information, and the head direction information of the vehicle.

[0010] In some embodiments of the above control method of the windshield capable of automatically shading, it further includes controlling the brightness of the electrochromic glass at the projection position according to the light intensity difference between the inside and outside of the vehicle.

[0011] In some embodiments of the above control method of the windshield capable of automatically shading, an outside light intensity sensor and an inside light intensity sensor are set. The intensity of the sunlight is obtained through the outside light intensity sensor, and the intensity of the light inside the vehicle is obtained through the inside light intensity sensor.

[0012] In some embodiments of the above-described control method for the windshield with automatic sunshading function, the human eye position information is obtained based on the image information of the vehicle occupants captured by the camera.

[0013] In some embodiments of the above-described control method for the windshield with automatic sunshading function, the human eye position information of the vehicle occupants is obtained based on the actual position information of the vehicle seats.

[0014] In some embodiments of the above-described control method for the windshield with automatic sunshading function, the gesture input information is obtained by setting up a camera, and the brightness of the electrochromic glass at the projection position is controlled by the gesture input information.

[0015] In some embodiments of the above-described control method for the windshield with automatic sunshading function, the voice input information is obtained by setting up a microphone, and the brightness of the electrochromic glass at the projection position is controlled by the voice input information.

[0016] In some embodiments of the above-described control method for the windshield with automatic sunshading function, the manual input information is obtained by setting up an interactive display, and the brightness of the electrochromic glass at the projection position is controlled by the manual input information.

[0017] In some embodiments of the above-described control method for the windshield with automatic sunshading function, it is verified whether the brightness adjustment of the electrochromic glass meets the requirements of the light transmittance setting threshold.

[0018] The windshield with automatic sunshading function of the present invention includes electrochromic glass and a control module connected to the electrochromic glass. A plurality of the electrochromic glass are laid flat on the front windshield. It further includes a vehicle position information acquisition module for acquiring vehicle position information, a solar azimuth information acquisition module for acquiring the solar azimuth information at the current vehicle position, and a human eye position information acquisition module for acquiring the human eye position information of the vehicle occupants, all of which are respectively connected to the control module. The control module obtains the projection position of the sunlight acting on the human eye on the front windshield based on the vehicle position information, solar azimuth information, and human eye position information, and controls the brightness of the electrochromic glass at the projection position.

[0019] In some embodiments of the above-described windshield with automatic sunshading function, the electrochromic glass is arranged in a matrix on the front windshield of the vehicle.

[0020] In some embodiments of the above-described windshield with automatic sunshading function, the vehicle position information acquisition module includes a vehicle GPS unit.

[0021] In some embodiments of the windshield with automatic sunshading function described above, a brightness sensor module is further included. The brightness sensor module includes an external light intensity sensor disposed outside the vehicle for obtaining the intensity of sunlight and an internal light intensity sensor disposed inside the vehicle for sensing the internal light intensity.

[0022] In some embodiments of the windshield with automatic sunshading function described above, a camera is further included. The camera is connected to the human eye position information acquisition module.

[0023] In some embodiments of the windshield with automatic sunshading function described above, a gesture input information acquisition module is further included. The gesture input information acquisition module is connected to the camera and the control module.

[0024] In some embodiments of the windshield with automatic sunshading function described above, a seat actual position information acquisition module for obtaining the actual position of the seat is further included. The seat position information acquisition module is connected to the human eye position information acquisition module.

[0025] In some embodiments of the windshield with automatic sunshading function described above, a voice input information acquisition module connected to the control module is further included. The voice input information acquisition module includes a microphone.

[0026] In some embodiments of the windshield with automatic sunshading function described above, a manual input information acquisition module connected to the control module is further included. The manual input information acquisition module includes an interactive display.

[0027] In some embodiments of the windshield with automatic sunshading function described above, a verification module for verifying whether the brightness adjustment of the electrochromic glass meets the requirements of the transmittance setting threshold is further included. The verification module is connected to the control module.

[0028] The beneficial effect of the present invention is that the brightness of the electrochromic glass at the projection position of the sunlight acting on the human eye on the front windshield is controlled by the windshield with automatic sunshading function of the present invention and its control method, and the brightness of the electrochromic glass at the non-projection position remains unchanged, providing a stable and safe driving vision.

[0029] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but it is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is an application example diagram of the windshield with automatic sunshading function of the present invention;

[0031] Figure 2 It is a step diagram of the control method of the windshield with automatic sunshading function of the present invention;

[0032] Figure 3 It is a module diagram of the windshield with automatic sunshading function of the present invention;

[0033] Figure 4 It is the control mode diagram of the windshield with automatic sunshading of the present invention;

[0034] Figure 5 It is the wiring diagram of the human eye position information acquisition module of the windshield with automatic sunshading of the present invention;

[0035] Figure 6 It is the method diagram for obtaining the solar azimuth information of the windshield with automatic sunshading of the present invention;

[0036] Figure 7 It is the schematic diagram of the electrochromic glass at the projection position of the windshield with automatic sunshading of the present invention;

[0037] Figure 8 It is the cloud deep learning model diagram of the windshield with automatic sunshading of the present invention. Specific embodiments

[0038] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments to further understand the purpose, solution and efficacy of the present invention, but it is not intended to limit the protection scope of the appended claims of the present invention.

[0039] References to "an embodiment", "embodiment", "exemplary embodiment", etc. in the specification mean that the described embodiment may include specific features, structures or characteristics, but not every embodiment must include these specific features, structures or characteristics. Moreover, such expressions do not refer to the same embodiment. Further, when combining specific features, structures or characteristics with an embodiment, it has been shown that it is within the knowledge of those skilled in the art to combine such features, structures or characteristics with other embodiments whether or not explicitly described.

[0040] In the specification and the subsequent claims, certain terms are used to refer to specific components or parts. Those of ordinary skill in the art should understand that technology users or manufacturers may use different nouns or terms to refer to the same component or part. The specification and the subsequent claims do not distinguish components or parts by the difference in names, but by the difference in their functions as the criterion. The terms "comprising" and "including" mentioned throughout the specification and the subsequent claims are open-ended terms and should be interpreted as "including but not limited to". Terms such as "connected" should be understood in a broad sense. For example, it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The description of the orientation or positional relationship in the present invention is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0041] As Figure 1 shown, the windshield of the present invention that can automatically shade the sun is provided with multiple electrochromic glasses 100 on the front windshield 1 in a tiled manner. By applying an electric current, the light transmittance of one or more blocks of the electrochromic glass 100 is changed to block the direct sunlight from shining on the eyes of the driver and passengers, achieving the purpose of improving safe driving.

[0042] As Figure 2 shown, the control method of the windshield of the present invention that can automatically shade the sun includes the following steps:

[0043] Obtain vehicle position information;

[0044] Obtain the sun azimuth information at the current vehicle position;

[0045] Obtain the eye position information of the people in the vehicle;

[0046] Obtain the projection position of the sunlight acting on the eyes on the front windshield according to the vehicle position information, the sun azimuth information, and the eye position information, and control the brightness of the electrochromic glass at the projection position.

[0047] Among them, the vehicle position information includes longitude and latitude information, altitude information, and the head direction information, for example, obtained through the vehicle GPS unit.

[0048] Specifically, the specific logic for presetting the sun position information refers to Figure 6 , and after obtaining the current position through GPS, the local sun position information can be preset.

[0049] Obtain the angle information of the current sunlight by combining the longitude and latitude information, altitude information, the head direction information, and the sun azimuth information.

[0050] The specific obtaining method is combined with Figure 7 , obtain the position coordinates of the sun in the sky according to the GPS position information and the local time, and convert them into the coordinates S(x2, y2, z2) in the vehicle coordinate system. The human eye position information is converted into the human eye coordinates E(x1, y1, z1) in the vehicle coordinate system. The windshield is simplified into a plane, and its area and position are fixed in the vehicle coordinate system and can be divided into several regions (W1, W2, W3, W4...). Store its information in the memory in a fixed manner. The line connecting E and S will pass through the windshield plane region, and the projection point P(x3, y3, z) is calculated. According to the coordinates of point P and the coordinate ranges of each region of W, the windshield region that needs to change the light transmittance can be judged, and the brightness of the electrochromic glass 100 at this projection position is controlled.

[0051] Among them, the electrochromic glass 100 for controlling the brightness can be one or several pieces corresponding to the eyes of the driver, or one or several pieces corresponding to the eyes of the co-driver. Except for the electrochromic glass 100 corresponding to the eyes of the driver and / or the co-driver on the front windshield 1 changing the color, the electrochromic glass 100 in other areas does not change the brightness, ensuring sufficient light and improving driving safety.

[0052] Among them, the brightness of the electrochromic glass 100 corresponding to the eyes of the driver and the electrochromic glass 100 corresponding to the eyes of the co-driver can be set to be the same or different to adapt to the different needs and habits of individuals.

[0053] Such as Figure 3 As shown, the windshield that can automatically shade in the present invention includes an electrochromic glass 100 and a control module 200 connected to the electrochromic glass 100 to control its color change. Further, it also includes a vehicle position information obtaining module 300, a sun azimuth information obtaining module 400, and a human eye position information obtaining module 600. Among them, the vehicle position information obtaining module 300 is used to obtain vehicle position information and is connected to the control module 200. The sun azimuth information obtaining module 300 is used to obtain the sun azimuth information at the current vehicle position and is connected to the control module 200. The human eye position information obtaining module 600 is used to obtain the human eye position information of the personnel in the vehicle and is connected to the control module 200. The control module 200 obtains the projection position of the sunlight acting on the human eye on the front windshield 1 according to the vehicle position information, the sun azimuth information, and the human eye position information, and controls the brightness of the electrochromic glass 100 at this projection position.

[0054] The windshield that can automatically shade in the present invention and its control method realize automatic adjustment of the brightness of the windshield, providing a stable and safe driving vision.

[0055] Among them, the electrochromic glass 100 is arranged in a matrix on the front windshield 1 of the vehicle, for example, and its quantity is adjustable. When the divided area is small, its brightness adjustment is more accurate. Of course, practicability and economy need to be considered.

[0056] The vehicle position information acquisition module 300 includes a vehicle GPS unit, and obtains the longitude and latitude information, altitude information, and vehicle head direction information of the vehicle's location through the vehicle's built-in GPS unit.

[0057] As Figure 4 shown, in an embodiment of the control method of the windshield that can automatically shade the sun, it further includes controlling the brightness of the electrochromic glass 100 at the projection position according to the difference in light intensity inside and outside the vehicle. Specifically, the windshield that can automatically shade the sun of the present invention further includes a brightness sensor module 700. The brightness sensor module 700 includes an external light intensity sensor arranged outside the vehicle and an internal light intensity sensor arranged inside the vehicle. The intensity of sunlight is obtained through the external light intensity sensor, the intensity of the light inside the vehicle is obtained through the internal light intensity sensor, and the intensity of sunlight is compared with the intensity of the light inside the vehicle to control the brightness and darkness of the electrochromic glass 100, ensuring that the eyes of the driver and the co-driver are not directly irradiated by the strong sunlight.

[0058] Furthermore, in some embodiments of the windshield that can automatically shade the sun of the present invention, it further includes a verification module 800, and the verification module 800 is connected to the control module 200. When controlling the brightness and darkness of the electrochromic glass 100 through the control module 200, it is necessary to verify through the verification module 800 whether the parameters of the brightness adjustment of the electrochromic glass 200 meet the requirements of the light transmittance setting threshold (according to the regulations, the light transmittance of the front windshield vision area shall not be less than 70%). If the verification passes, the control module 200 controls the light transmittance of the electrochromic glass 100 through the parameters.

[0059] In some embodiments of the windshield that can automatically shade the sun of the present invention, there are at least the following two ways to obtain the human eye position information: obtaining the human eye position information according to the image information of the vehicle occupants captured by the camera, and obtaining the human eye position information of the vehicle occupants according to the actual position information of the vehicle seat.

[0060] Specifically, as Figure 5 shown, the windshield that can automatically shade the sun of the present invention further includes a camera 900, and the camera 900 is connected to the human eye position information acquisition module 600.

[0061] In some other embodiments of the present invention, the windshield that can automatically shade the sun further includes a seat actual position information acquisition module 1000 for obtaining the actual position of the seat. The seat position information acquisition module 1000 is connected to the human eye position information acquisition module 600.

[0062] After the in-vehicle camera collects the human eye position information several times and combines it with the seat R point position information, the position E(x1, y1, z1) of the human eye in the vehicle coordinate system is calculated after calibration. In some embodiments of the control method of the windshield with automatic sunshading of the present invention, gesture input information is obtained through a camera, and the brightness of the electrochromic glass 100 at the projection position is controlled through the gesture input information, so as to block the direct sunlight from shining on the eyes of the driver and passengers, achieving the purpose of enhancing safe driving. Specifically, the windshield with automatic sunshading of the present invention further includes a gesture input information acquisition module 1100, and the gesture input information acquisition module 1100 is connected to the camera 900 and the control module 200.

[0063] In some embodiments of the control method of the windshield with automatic sunshading of the present invention, voice input information is obtained by setting a microphone, and the brightness of the electrochromic glass at the projection position is controlled through the voice input information. Specifically, the windshield with automatic sunshading of the present invention further includes a voice input information acquisition module 1200 connected to the control module 200, and the voice input information acquisition module 1200 includes a microphone.

[0064] In some embodiments of the control method of the windshield with automatic sunshading of the present invention, manual input information is obtained by setting an interactive display, and the brightness of the electrochromic glass at the projection position is controlled through the manual input information. Specifically, the windshield with automatic sunshading of the present invention further includes a manual input information acquisition module 1300 connected to the control module 200, and the manual input information acquisition module 1300 includes an interactive display.

[0065] It should be noted that when adjusting the brightness of one or more electrochromic glasses 100 through the above gesture input, voice input, and manual input, it is also necessary to check whether the brightness adjustment of the electrochromic glass 200 meets the requirements of the light transmittance setting threshold through the verification module 800.

[0066] Among them, the present invention also accurately controls the color-changing area through a deep learning algorithm model, such as Figure 8 As shown, the collected vehicle position information, camera information, light intensity sensor information, user input information, seat position information, and driver information are sent to the cloud data. The cloud data combines the sun azimuth information at each place and each moment and all the information sent by the vehicle for large model deep learning to obtain the specific color-changing areas W1, W2... of the electrochromic front windshield that need to change the light transmittance. Then, the specific area information of the front windshield that needs to perform color change is sent to the vehicle, and the control module 200 controls the brightness of the electrochromic glass 100 in the color-changing area, so that the light will not directly shine on the eyes of the driver and / or co-driver, and the electrochromic glass 100 in other blocks does not change the brightness, ensuring sufficient light.

[0067] The present invention can not only achieve the automatic windshield sunshade function, but also adjust the transparency of the windshield in a specific area in a timely and accurate manner according to the changes in the brightness and intensity of the external light in different seasons, times and directions, thereby improving the driving and riding comfort and driving safety.

[0068] Of course, the present invention can also have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention. However, these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present invention.

Claims

1. A control method for a windshield with automatic sunshading function, characterized in that, Lay multiple electrochromic glasses flat on the front windshield, including the following steps: Obtain vehicle position information through vehicle GPS positioning; Obtain the solar azimuth information at the current vehicle position; Obtain the eye position information of the people inside the vehicle; Obtain the projection position of the sunlight acting on the eyes on the front windshield according to the vehicle position information, solar azimuth information, and eye position information, and control the brightness of the electrochromic glass at the projection position.

2. The control method for a windshield with automatic sunshading function according to claim 1, characterized in that, The vehicle position information includes longitude and latitude information, altitude information, and the vehicle head direction information.

3. The control method for a windshield with automatic sunshading function according to claim 1, characterized in that, It also includes controlling the brightness of the electrochromic glass at the projection position through the light intensity difference between the inside and outside of the vehicle.

4. The control method for a windshield with automatic sunshading function according to claim 3, characterized in that, Set an outside light intensity sensor and an inside light intensity sensor. Obtain the solar light intensity through the outside light intensity sensor and obtain the inside light intensity through the inside light intensity sensor.

5. The control method for a windshield with automatic sunshading function according to claim 1, characterized in that, Obtain the eye position information according to the image information of the people inside the vehicle captured by the camera.

6. The control method for a windshield with automatic sunshading function according to claim 1, characterized in that, Obtain the eye position information of the people inside the vehicle according to the actual position information of the vehicle seat.

7. The control method for a windshield with automatic sunshading function according to claim 1, characterized in that, Obtain gesture input information by setting a camera, and control the brightness of the electrochromic glass at the projection position through the gesture input information.

8. The control method for a windshield with automatic sunshading function according to claim 1, characterized in that, Obtain voice input information by setting a microphone, and control the brightness of the electrochromic glass at the projection position through the voice input information.

9. The control method for a windshield with automatic sunshading function according to claim 1, characterized in that, Obtain manual input information by setting an interactive display, and control the brightness of the electrochromic glass at the projection position through the manual input information.

10. The control method for a windshield with automatic sunshading function according to any one of claims 3 to 9, characterized in that, Verify whether the brightness adjustment of the electrochromic glass meets the requirements of the light transmittance setting threshold.

11. A windshield with automatic sunshading function, comprising an electrochromic glass and a control module connected to the electrochromic glass, characterized in that, The electrochromic glasses are multiple ones laid flat on the front windshield, and also include a vehicle position information acquisition module connected to the control module for obtaining vehicle position information, a solar azimuth information acquisition module for obtaining the solar azimuth information at the current vehicle position, and an eye position information acquisition module for obtaining the eye position information of the people inside the vehicle. The control module obtains the projection position of the sunlight acting on the eyes on the front windshield according to the vehicle position information, solar azimuth information, and eye position information, and controls the brightness of the electrochromic glass at the projection position.

12. The windshield with automatic sunshading function according to claim 11, characterized in that, The electrochromic glasses are arranged in a matrix on the front windshield of the vehicle.

13. The windshield with automatic sunshading function according to claim 11, characterized in that, The vehicle position information acquisition module includes a vehicle GPS unit.

14. The windshield with automatic sunshading function according to claim 11, characterized in that, It also includes a brightness sensor module. The brightness sensor module includes an outside light intensity sensor for obtaining the solar light intensity arranged outside the vehicle and an inside light intensity sensor for sensing the inside light intensity arranged inside the vehicle.

15. The windshield with automatic sunshading function according to claim 11, characterized in that, It also includes a camera, and the camera is connected to the eye position information acquisition module.

16. The windshield capable of automatically shading sun according to claim 15, characterized in that, It also includes a gesture input information acquisition module, and the gesture input information acquisition module is connected to the camera and the control module.

17. The windshield capable of automatically shading sun according to claim 11, characterized in that, It also includes a seat actual position information acquisition module for obtaining the actual position of the seat, and the seat position information acquisition module is connected to the eye position information acquisition module.

18. The windshield capable of automatically shading sun according to claim 11, characterized in that, It also includes a voice input information acquisition module connected to the control module, and the voice input information acquisition module includes a microphone.

19. The windshield capable of automatically shading sun according to claim 11, characterized in that, It also includes a manual input information acquisition module connected to the control module, and the manual input information acquisition module includes an interactive display.

20. The windshield capable of automatically shading sun according to any one of claims 13 to 19, characterized in that, It further includes a verification module for verifying whether the brightness adjustment of the electrochromic glass meets the requirements of the transmittance setting threshold, and the verification module is connected to the control module.

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