A driver adaptive sunshade adjustment system and a method of adjusting the same

Abstract

The application discloses a driver self-adaptive sunshade adjusting system and an adjusting method thereof, and can flexibly select a sunshade area in a full glass range according to the change of a sunlight incident direction, and completely eliminates the sunshade blind area existing in a traditional sunshade board; the driver eyeball position is captured in real time through a cab eye movement tracking camera, and the sunlight incident angle is obtained in combination with a sun position capturing camera, the system can accurately calculate the path of the sunlight directly irradiating to the driver eyeball, and realizes the personalized sunshade according to different people and different times, and avoids the adverse effect of the one-size-fits-all light adjustment on the driver vision; the controller only adjusts the light of the glass area corresponding to the line connecting the driver eyeball and the sun, and the other areas outside the driver sight range always remain high transparency, which not only eliminates the interference of the directly irradiating sunlight on the driver sight line, but also does not affect the observation of the road surface and the traffic condition of the driver, and does not hinder the normal viewing demand of other passengers.

Description

Technical Field

[0001] This invention relates to the field of automotive sunshade control technology, and in particular to a driver-adaptive sunshade adjustment system and its adjustment method. Background Technology

[0002] With the continuous improvement of automotive intelligence, driving safety and comfort are receiving increasing attention. During driving, glare caused by direct sunlight is a significant factor affecting driving safety. When the sun is at a low angle, light often shines directly into the driver's eyes from a specific direction through the windshield or side windows, causing momentary blindness or visual discomfort, and in severe cases, potentially leading to traffic accidents.

[0003] Traditional vehicle sunshade solutions mainly include the following: (1) Mechanically flip-up sun visor: This is currently the most common application solution, in which the driver manually flips the sun visor to block the strong light on the upper part of the windshield. However, this solution has obvious drawbacks: the mechanical flipping action will distract the driver and increase safety hazards; the sunshade area is fixed and cannot be adaptively adjusted according to the driver's sitting posture, line of sight and dynamic position of strong light sources.

[0004] (2) Automatic sunshade system based on light sensor: Existing technologies include schemes that use ambient light sensors to detect light intensity and automatically control the sunshade to unfold or adjust the light transmittance of the electronically controlled dimming glass. However, these schemes suffer from response lag—the sensor can only trigger a response after glare occurs, making it impossible to provide early protection. In addition, their shading strategies are usually fixed, with the same algorithm applied to all drivers, failing to recognize individual differences in driver height, posture, or driving habits.

[0005] (3) Electrochromic / Dimmable Glass Technology: Electrochromic glass (EC), polymer-dispersed liquid crystal (PDLC), and suspended particle device (SPD) and other electrochromic glass technologies have been applied in the field of automotive sunroofs in recent years. PDLC films can switch between transparent and opaque when energized, and SPD technology can block up to 99.5% of visible light and can independently control the light transmittance of each zone. However, existing applications are mainly focused on sun protection and privacy protection for sunroofs and side windows, such as a dimmable automotive sunroof or automotive sunshade disclosed in patent CN221938006U; it has not yet been fully applied to the dynamic adaptive sunshade adjustment of the windshield.

[0006] In summary, existing automotive sunshade technologies have the following main drawbacks: First, limited adjustment range. Traditional sunshades use a mechanical folding structure, covering only a limited fan-shaped area at the top of the windshield, failing to address direct sunlight from the lower part of the windshield and side-incoming rays, resulting in significant blind spots. Second, inconvenient manual operation and safety hazards. Existing retractable sunshades still require manual adjustment by the driver, which can easily distract attention while driving and affect driving safety. Third, lack of intelligent adaptive capabilities. Current solutions cannot dynamically adjust the shading area based on the driver's eye position and the direction of sunlight, failing to achieve truly personalized and time-sensitive adaptive sunshade. Fourth, failure to cover the shading needs of side windows. Existing technologies mainly focus on improving the mechanical structure of the windshield sunshade, lacking effective automatic sunshade solutions for the left and right side window areas. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a driver adaptive sunshade adjustment system and its adjustment method, which can accurately and proactively block dynamic glare sources and maintain the overall clarity of the driver's field of vision to the maximum extent while suppressing glare.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: This application provides a driver adaptive sunshade adjustment system, including a driver's cab eye-tracking camera, a driver's cab sun position capture camera, a sunshade adjustment controller, side window electrochromic composite glass, and windshield electrochromic composite glass; the driver's cab eye-tracking camera, driver's cab sun position capture camera, side window electrochromic composite glass, and windshield electrochromic composite glass are all connected to the sunshade adjustment controller to form an adaptive adjustment system that can sense the sun position in real time, track the driver's line of sight and head posture, and anticipate sunshade adjustment based on driving habits.

[0009] It also includes an interactive module for supporting fully automatic adjustment, manual adjustment of the central control screen, voice adjustment, and motion capture adjustment, which is connected to the sunshade adjustment controller.

[0010] The driver's cab eye-tracking camera is used to capture the driver's eye position in real time and achieves stable tracking around the clock with the assistance of infrared light. The driver's cab eye-tracking camera is installed on the dashboard or above the steering wheel.

[0011] The driver's cab solar position capture camera is used to detect the sun's azimuth and elevation angles and identify the direction of sunlight incidence. The driver's cab solar position capture camera is installed in front of the rearview mirror inside the windshield.

[0012] The sunshade adjustment controller is a control unit used to receive camera data, calculate the direct path of light, dynamically calibrate the glass area that needs to be dimmed, and issue control commands.

[0013] Both the side window electrochromic composite glass and the windshield electrochromic composite glass are matrix-type partitioned composite glass capable of independently adjusting the haze of designated areas according to controller instructions.

[0014] This application provides a method for adjusting a driver's adaptive sunshade system, including the following steps: S1, System initialization; S2. Real-time data acquisition: The driver's face and eye images are acquired through the eye-tracking camera in the cab, and infrared supplementary lighting is used to adapt to various lighting environments; the sun position capture camera in the cab simultaneously acquires image data of the sky area in front and to the side; S3. Driver's eye position detection: The sunshade adjustment controller processes the images captured by the eye-tracking camera in the cab in real time to obtain the three-dimensional coordinates of the driver's eye in the vehicle coordinate system and the current gaze direction vector. S4. Sun position detection: The sunshade adjustment controller analyzes the image captured by the sun position capture camera in the cab to obtain the azimuth and elevation angles of the sun relative to the vehicle coordinate system and generate the sunlight incident direction vector. S5. Determine Ray Tracing and Sunshade Area: Based on the driver's eye position coordinates and the sun's incident direction vector, the sunshade adjustment controller uses a spatial geometric ray tracing algorithm to calculate the straight path of sunlight from outside the vehicle through the glass to the driver's eye, accurately determining the intersection point of this path on the surface of the windshield and the left and right side windows; the sunshade adjustment controller maps the coordinates of this intersection point to the pixel unit matrix of the electronically controlled glass, determines the area range where the haze needs to be adjusted, and calculates the ideal light transmittance value for this area based on the sunlight intensity; S6. Glass Haze Adjustment: The sunshade adjustment controller sends a dimming command to the electronically controlled glass drive circuit for adjustment. S7. Real-time dynamic update: As the vehicle is in continuous motion during driving, the relative position of the driver's eyeballs changes dynamically with road bumps and driving posture adjustments. The azimuth and altitude angles of the sun also change continuously over time. The sunshade adjustment controller cycles through steps S2 to S6 to track and update the sunshade area and light transmittance in real time, ensuring that sunlight cannot directly hit the driver's eyes under any driving conditions, thus achieving adaptive adjustment.

[0015] The adjustment method also includes manual intervention response. In fully automatic adjustment mode, the system continuously monitors the operation status of the soft switch on the central control screen of the interactive module and voice command input. When a manual adjustment operation is detected, the system immediately exits the fully automatic mode and executes the adjustment command input by the driver or passenger. When a voice command is detected, the system parses the command content through a voice recognition algorithm, converts it into corresponding control parameters, and then executes the glass haze adjustment. In manual intervention mode, the system allows users to manually adjust the overall glass light transmittance level or set independent adjustment strategies for the windshield and the side windows.

[0016] The adjustment method also includes shutdown and data saving: after the vehicle is powered off, the sunshade adjustment controller executes the shutdown process and sends a voltage reset command to the electric glass drive circuit, so that each pixel unit gradually returns to the initial transparent state; the controller stores the adjustment parameters during this driving process in non-volatile memory as reference data for quick initialization when the vehicle is started next time, so as to improve the response speed and adapt to the personalized needs of different drivers.

[0017] Compared with the prior art, the present invention has the following advantages: 1. By deploying matrix electrochromic composite glass on the windshield and left and right side windows, the present invention can flexibly select the shading area within the entire glass range according to the change of the direction of sunlight, completely eliminating the shading blind spots of traditional sunshades. 2. By capturing the driver's eye position in real time through the eye-tracking camera in the cab and obtaining the angle of sunlight incidence by the camera capturing the sun's position, the system can accurately calculate the path of sunlight directly hitting the driver's eyes, realizing personalized sunshade that varies from person to person and from time to time, avoiding the adverse effects of one-size-fits-all dimming on the driver's vision. 3. The system defaults to fully automatic adjustment mode. The driver does not need to operate manually or by voice during the entire driving process. The sunshade area and light transmittance are dynamically updated in real time according to the driver's posture and the environment, completely freeing the driver's hands and eliminating the distraction safety hazards caused by manually adjusting the sun visor. 4. The controller only dims the glass area corresponding to the line connecting the driver's eyeball and the sun, while other areas outside the driver's field of vision remain highly transparent. This eliminates the interference of direct sunlight on the driver's vision, does not affect the driver's observation of the road and traffic conditions, and does not hinder the normal sightseeing needs of other passengers. 5. In addition to the fully automatic mode, the system also supports three interaction methods: soft switch on the central control screen, voice commands, and action commands, providing drivers with flexible and personalized operation options that balance automation and humanization. Attached Figure Description

[0018] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings: Figure 1 This is a block diagram illustrating the principle of the adjustment system of the present invention.

[0019] In the picture: 1. Eye-tracking camera in the cab; 2. Sun position capture camera in the cab; 3. Sunshade adjustment controller; 4. Interaction module; 5. Electrochromic composite glass for the left side window; 6. Electrochromic composite glass for the windshield; 7. Electrochromic composite glass for the right side window. Detailed Implementation

[0020] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0021] Although the invention has been shown and described herein with reference to specific embodiments, it is not intended to be limited to the details shown. Rather, various modifications in detail may be made within the equivalent scope and scope of the claims without departing from the invention. In the drawings, the same item numbers refer to the same elements.

[0022] Throughout this disclosure, various terms are used to describe the physical shape or arrangement of features. Many of these terms are used to describe features conforming to a cylindrical or generally cylindrical geometry with the feature as its radius and a central axis perpendicular to that radius. Unless otherwise specified, the terms are given the following meanings: The terms “longitudinal,” “longitudinal,” “axial,” and “axial” refer to a direction, dimension, or orientation parallel to the central axis. The terms “radial” and “radially” refer to a direction, dimension, or orientation perpendicular to the central axis. The terms “inward” and “inner” refer to a direction, dimension, or orientation extending radially toward the central axis. The terms “outward” and “outer” refer to a direction, dimension, or orientation extending radially away from the central axis.

[0023] In this specification, relative terms such as “horizontal,” “vertical,” “upward,” “downward,” “top,” and “bottom,” and their derivatives (e.g., “horizontal,” “downward,” “upward,” etc.) should be interpreted as referring to the direction described or the direction shown in the accompanying drawings. These relative terms are for ease of description and are not generally intended to require a specific direction.

[0024] like Figure 1As shown, this application provides a driver adaptive sunshade adjustment system, including a driver's cab eye-tracking camera 1, a driver's cab sun position capturing camera 2, a sunshade adjustment controller 3, an interaction module 4, side window electrochromic composite glass, and windshield electrochromic composite glass 6; wherein, the driver's cab eye-tracking camera, driver's cab sun position capturing camera, side window electrochromic composite glass, windshield electrochromic composite glass, and interaction module are all connected to the sunshade adjustment controller to form an adaptive adjustment system that can sense the sun position in real time, track the driver's line of sight and head posture, and anticipate sunshade adjustment based on driving habits.

[0025] In some embodiments, The interactive module supports fully automatic adjustment, manual adjustment via the central control screen, voice adjustment, and motion capture adjustment. The interactive module is connected to the sunshade adjustment controller.

[0026] The driver's eye-tracking camera is used to capture the driver's eye position in real time. It achieves stable tracking around the clock with the assistance of infrared light. The driver's eye-tracking camera is installed on the dashboard or above the steering wheel.

[0027] The cab solar position capture camera is used to detect the azimuth and elevation angles of the sun and identify the direction of sunlight. The cab solar position capture camera is installed in front of the rearview mirror inside the windshield.

[0028] The sunshade adjustment controller is a control unit used to receive camera data, calculate the direct path of light, dynamically calibrate the glass area that needs to be dimmed, and issue control commands.

[0029] Both the side window electrochromic composite glass and the windshield electrochromic composite glass are matrix-type zoned composite glass capable of independently adjusting the haze of designated areas according to controller commands. The side window electrochromic composite glass includes the left window electrochromic composite glass 5 and the right window electrochromic composite glass 7, which can independently adjust the haze of designated areas according to controller commands.

[0030] The sunshade adjustment controller receives camera data, calculates the direct light path, dynamically calibrates the glass area that needs dimming, and sends control commands to actively adjust the light.

[0031] This application provides a method for adjusting a driver's adaptive sunshade system, including the following steps: S1, System initialization; After the vehicle is powered on, the sunshade adjustment controller performs a self-test to confirm that the connections of the driver's cab eye-tracking camera, the sun position capture camera, and the electric glass drive circuit are normal; the controller reads calibration parameters, including the driver's seat position initialization data, the transformation matrix between the vehicle coordinate system and the camera coordinate system, etc., and completes the system preheating. S2. Real-time data acquisition: The driver's cab eye-tracking camera continuously captures images of the driver's face and eyes at a sampling frequency of no less than 30 frames per second, and adapts to various lighting environments through infrared supplementary lighting; the driver's cab sun position capture camera simultaneously captures image data of the sky area in front and to the side; S3. Driver's eye position detection: The sunshade adjustment controller processes images captured by the eye-tracking camera in the cab in real time to obtain the three-dimensional coordinates of the driver's eyeball in the vehicle coordinate system and the current gaze direction vector. Specifically, the sunshade adjustment controller processes images captured by the driver's eye-tracking camera in real time. It uses feature extraction algorithms to identify the corneal reflection points and pupil centers of both eyes, and combines this with a head posture estimation algorithm to eliminate interference from the driver's head movement on the direction of vision. The system then calculates the three-dimensional coordinates of the driver's eyes in the vehicle coordinate system and the current direction vector of vision. If detection fails, the system enters sensor fault-tolerant mode and activates a backup strategy. S4. Solar Position Detection: The sunshade adjustment controller analyzes images captured by the camera in the driver's cab to identify sunspot areas through image segmentation. Combining this with date, time, and GPS positioning information, it calculates the azimuth and elevation angles of the sun relative to the vehicle's coordinate system, generating a vector for the direction of sunlight incidence. If direct detection fails due to cloudy or overcast skies, the system uses historical data and a time model to estimate the sun's theoretical position as an auxiliary reference. S5. Determine the ray tracing and shading areas: The sunshade adjustment controller calculates the straight path of sunlight from outside the vehicle through the glass to the driver's eyeball based on the driver's eyeball position coordinates and the sun's incident direction vector, using a spatial geometric ray tracing algorithm. It accurately determines the intersection point of this path on the surface of the windshield and the left and right side windows. The sunshade adjustment controller maps the coordinates of this intersection point to the pixel unit matrix of the electronically controlled glass, determines the area range where the haze needs to be adjusted, and calculates the ideal light transmittance value for that area based on the sunlight intensity. If sunlight passes through both the windshield and side window areas simultaneously within a certain time period (e.g., when the vehicle is turning), the controller will send dimming signals to the corresponding pixel units in both areas at the same time. S6, Glass Haze Adjustment: The sunshade adjustment controller sends a dimming command to the electric glass drive circuit. The command includes the target glass area (windshield / left side window / right side window), the coordinate range of the pixel unit to be adjusted, and the target transmittance. The drive circuit applies an adjustment voltage of corresponding amplitude and frequency to the transparent conductive electrode of each pixel unit according to the command. The system performs regional dynamic haze adjustment: the glass transparency is reduced to the calibrated haze value for the glass area through which the driver's eyeball passes by the line connecting the sun and the glass, so that direct sunlight is effectively attenuated; while other glass areas outside the driver's field of vision remain highly transparent to ensure a wide driving view. S7. Real-time dynamic update: Since the vehicle is in continuous motion during driving, the relative position of the driver's eyeballs changes dynamically with road bumps and driving posture adjustments. The azimuth and altitude angles of the sun also change continuously over time. Therefore, the sunshade adjustment controller cycles through steps S2 to S6 at a frequency of no less than 10Hz to track and dynamically update the sunshade area and light transmittance in real time, ensuring that sunlight cannot directly hit the driver's eyes under any driving conditions, thus achieving adaptive adjustment. S8. Manual intervention response: In fully automatic adjustment mode, the system continuously monitors the operation status of the soft switch on the central control screen of the interactive module and voice command input; when a manual adjustment operation is detected, the system immediately exits fully automatic mode and executes the adjustment command input by the driver or passenger; when a voice command is detected, the system parses the command content through a voice recognition algorithm, converts it into corresponding control parameters, and then executes the glass haze adjustment; in manual intervention mode, the system allows users to manually adjust the overall glass light transmittance level, or set independent adjustment strategies for the windshield and the side windows respectively.

[0032] S9. Power off and save data: After the vehicle is powered off, the sunshade adjustment controller executes the shutdown procedure and sends a voltage reset command to the electric glass drive circuit, so that each pixel unit gradually returns to its initial transparent state. The controller stores the adjustment parameters during this driving process in non-volatile memory as reference data for quick initialization when the vehicle is started next time, so as to improve response speed and adapt to the personalized needs of different drivers.

[0033] The control principle of the driver adaptive sunshade adjustment system and its adjustment method described in this application is as follows: This application provides a driver-adaptive sunshade adjustment scheme based on EC glass. This scheme achieves precise and early shading of dynamic glare sources through multimodal perception and fusion decision-making, and maintains the overall clarity of the driver's field of vision to the maximum extent while suppressing glare.

[0034] This technology integrates eye-tracking, sun position sensing, image processing, and matrix-style electronically controlled glass drive technology to achieve intelligent and precise sunshade adjustment of the windshield and left and right side windows.

[0035] Two dedicated cameras are installed in the driver's cab. The driver's cab eye-tracking camera, using an infrared light source and a high-resolution image sensor, is mounted above the dashboard or behind the steering wheel to capture real-time images of the driver's face and eyes. This camera uses a pupil-corneal reflection model and head posture estimation algorithm to calculate the precise position of the driver's eyes in three-dimensional space and the direction of their gaze. The driver's cab solar position capture camera is mounted in front of the rearview mirror inside the windshield. It acquires images of the external environment through a wide-angle lens, extracts the sun's position from the sky using image segmentation and target recognition algorithms, and obtains the precise geometric parameters of sunlight incidence by calculating the azimuth and altitude angles of the sun relative to the vehicle's coordinate system. To improve positioning accuracy, this module can also be fused with vehicle GPS positioning information, date and time information, and electronic compass data for solar positioning assistance through trajectory extrapolation in cloudy or overcast conditions.

[0036] The sunshade adjustment controller is the core processing unit of the entire system, typically employing a high-performance embedded processor or automotive-grade AI chip. After receiving image data from the eye-tracking camera and the sun position capture camera, the controller performs the following processing steps sequentially: First, it preprocesses the eye-tracking images, using feature extraction algorithms to identify the corneal reflection points and pupil center positions of the driver's eyes. Combined with head posture compensation and camera calibration parameters, it establishes a three-dimensional position model of the driver's eyes in the vehicle's spatial coordinate system and updates the gaze direction vector in real time. Second, based on the image data output from the sun position capture camera, it identifies solar flares in the sky region using threshold segmentation and morphological operations. Through geometric relationships, it calculates the azimuth and elevation angles of the sun in the vehicle coordinate system, thus obtaining the sunlight incident direction vector. Subsequently, based on the driver's eye position and the sunlight incident direction, the controller uses a three-dimensional spatial ray tracing algorithm to calculate the complete path of sunlight entering from outside the vehicle and reaching the driver's eyes, accurately calibrating the projection position, size, and intensity distribution of sunlight on the electronically controlled glass surface. Based on this, the controller maps the calculated sunshade area to a matrix of pixel units in the electrically controlled glass—the electrodes of the windshield and side windows are controlled independently in a grid-like manner, with each pixel unit corresponding to a smallest glass unit whose haze can be adjusted independently. The controller generates a corresponding dimming signal based on the mapping relationship, including the coordinate range of the pixel unit requiring dimming and the target transmittance value. Regarding the adjustment strategy, the controller employs a regional dynamic haze adjustment strategy: for the area of ​​the windshield or side window glass through which the driver's eyeball passes by the line connecting the sun and the windshield, an adjustment voltage is applied to adjust the transparency to a calibrated haze value, reducing the transmitted light intensity to an acceptable level for the driver; while for the remaining glass areas outside the driver's field of vision, a high transparency state is maintained, ensuring the driver's overall field of vision is open and clear, without obstructing the normal viewing needs of other passengers.

[0037] The electrochromic composite glass for the left and right windows, the windshield, and the right window all feature an electrochromic layer, an ion-conducting layer, and a transparent conductive electrode layer disposed between two glass substrates. Unlike traditional whole-pane dimming solutions, the glass electrodes of this invention employ a graphic design, forming an electrode spacing lower than the resolution of the human eye. This divides the glass surface into multiple independently controllable matrix pixel units, each of which can be independently fitted with an adjustable voltage. When the controller applies a voltage of a specific amplitude to a pixel unit, the electrochromic layer undergoes an electrochemical oxidation-reduction reaction, resulting in a corresponding change in its optical transmittance—the higher the applied voltage, the more pronounced the color deepening, the increased haze, and the decreased light transmittance; after the voltage is removed, the electrochromic layer gradually returns to a transparent state. By precisely controlling the driving voltage amplitude and duration of each pixel unit, fine and continuous adjustment of the light transmittance in each area can be achieved.

[0038] The system operates in fully automatic adjustment mode by default. In this mode, the sunshade adjustment controller dynamically tracks and automatically updates the shading area and light transmittance based on real-time monitoring of eye position and sun incidence angle, requiring no driver intervention. Simultaneously, the system also provides a rich set of manual intervention interfaces through the interactive module: the driver or passengers can manually turn the sunshade function on / off, adjust the target fog level, or specify the glass area requiring shading via the soft switch interface on the central control screen; the system also integrates a voice / action interaction module, supporting driver control via voice commands (such as "open the windshield sunshade," "dim the side windows," "restore full transparency mode") or specific actions (head shaking + nodding), providing flexible and personalized operation options while maintaining safe driving. Smooth switching between the three adjustment modes is possible. When the driver manually adjusts via the screen or voice, the system automatically takes over control and executes the manual command. If no new command is input within a certain period after manual adjustment, the system can revert to fully automatic adjustment mode.

[0039] Compared with existing technologies, this invention has the following advantages: 1. By deploying matrix-type electrochromic composite glass on the windshield and left and right side windows, this invention can flexibly select the shading area within the entire glass range according to changes in the direction of sunlight incidence, completely eliminating the blind spots of traditional sun visors; 2. By capturing the driver's eye position in real time through an eye-tracking camera in the cab and combining this with a camera capturing the sun's position to obtain the angle of sunlight incidence, the system can accurately calculate the path of sunlight directly hitting the driver's eyes, achieving personalized shading that varies from person to person and from time to time, avoiding the adverse effects of one-size-fits-all dimming on the driver's vision; 3. The system defaults to fully automatic adjustment mode, allowing the driver to adjust the shading area throughout the entire driving process. 1. No manual or voice operation is required. The sunshade area and light transmittance are dynamically updated in real time according to the driver's posture and the environment, completely freeing the driver's hands and eliminating the distraction safety hazard caused by manually adjusting the sun visor; 2. The controller only adjusts the light in the glass area corresponding to the line of sight between the driver's eyeball and the sun, while other areas outside the driver's field of vision remain highly transparent. This eliminates the interference of direct sunlight on the driver's vision, does not affect the driver's observation of the road and traffic conditions, and does not hinder the normal sightseeing needs of other passengers; 3. In addition to the fully automatic mode, the system also supports three interaction methods: soft switch on the central control screen, voice commands, and action commands, providing the driver with flexible and personalized operation options, balancing automation and humanization.

[0040] The above description is merely an illustration of preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0041] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A driver adaptive sunshade adjustment system, characterized in that: It includes a driver's cab eye-tracking camera, a driver's cab sun position capture camera, a sunshade adjustment controller, electrochromic composite glass for the side windows, and electrochromic composite glass for the windshield. The driver's cab eye-tracking camera, driver's cab sun position capture camera, electrochromic composite glass for the side windows, and electrochromic composite glass for the windshield are all connected to the sunshade adjustment controller to form an adaptive adjustment system that can sense the sun's position in real time, track the driver's line of sight and head posture, and proactively adjust the sunshade based on driving habits.

2. The driver adaptive sunshade adjustment system as described in claim 1, characterized in that: It also includes an interactive module for supporting fully automatic adjustment, manual adjustment of the central control screen, voice adjustment, and motion capture adjustment, which is connected to the sunshade adjustment controller.

3. The driver adaptive sunshade adjustment system as described in claim 1, characterized in that: The driver's cab eye-tracking camera is used to capture the driver's eye position in real time and achieves stable tracking around the clock with the assistance of infrared light. The driver's cab eye-tracking camera is installed on the dashboard or above the steering wheel.

4. The driver adaptive sunshade adjustment system as described in claim 1, characterized in that: The driver's cab solar position capture camera is used to detect the sun's azimuth and elevation angles and identify the direction of sunlight incidence. The driver's cab solar position capture camera is installed in front of the rearview mirror inside the windshield.

5. The driver adaptive sunshade adjustment system as described in claim 1, characterized in that: The sunshade adjustment controller is a control unit used to receive camera data, calculate the direct path of light, dynamically calibrate the glass area that needs to be dimmed, and issue control commands.

6. The driver adaptive sunshade adjustment system as described in claim 1, characterized in that: Both the side window electrochromic composite glass and the windshield electrochromic composite glass are matrix-type partitioned composite glass capable of independently adjusting the haze of designated areas according to controller instructions.

7. A method for adjusting the driver adaptive sunshade adjustment system as described in any one of claims 1 to 6, characterized in that: The adjustment method includes the following steps: S1, System initialization; S2. Real-time data acquisition: The driver's face and eye images are acquired through the eye-tracking camera in the cab, and infrared supplementary lighting is used to adapt to various lighting environments; the sun position capture camera in the cab simultaneously acquires image data of the sky area in front and to the side; S3. Driver's eye position detection: The sunshade adjustment controller processes the images captured by the eye-tracking camera in the cab in real time to obtain the three-dimensional coordinates of the driver's eye in the vehicle coordinate system and the current gaze direction vector. S4. Sun position detection: The sunshade adjustment controller analyzes the image captured by the sun position capture camera in the cab to obtain the azimuth and elevation angles of the sun relative to the vehicle coordinate system and generate the sunlight incident direction vector. S5. Determine Ray Tracing and Sunshade Area: Based on the driver's eye position coordinates and the sun's incident direction vector, the sunshade adjustment controller uses a spatial geometric ray tracing algorithm to calculate the straight path of sunlight from outside the vehicle through the glass to the driver's eye, accurately determining the intersection point of this path on the surface of the windshield and the left and right side windows; the sunshade adjustment controller maps the coordinates of this intersection point to the pixel unit matrix of the electronically controlled glass, determines the area range where the haze needs to be adjusted, and calculates the ideal light transmittance value for this area based on the sunlight intensity; S6. Glass Haze Adjustment: The sunshade adjustment controller sends a dimming command to the electronically controlled glass drive circuit for adjustment. S7. Real-time dynamic update: As the vehicle is in continuous motion during driving, the relative position of the driver's eyeballs changes dynamically with road bumps and driving posture adjustments. The azimuth and altitude angles of the sun also change continuously over time. The sunshade adjustment controller cycles through steps S2 to S6 to track and update the sunshade area and light transmittance in real time, ensuring that sunlight cannot directly hit the driver's eyes under any driving conditions, thus achieving adaptive adjustment.

8. The adjustment method as described in claim 7, characterized in that: The adjustment method also includes manual intervention response. In fully automatic adjustment mode, the system continuously monitors the operation status of the soft switch on the central control screen of the interactive module and voice command input. When a manual adjustment operation is detected, the system immediately exits the fully automatic mode and executes the adjustment command input by the driver or passenger. When a voice command is detected, the system parses the command content through a voice recognition algorithm, converts it into corresponding control parameters, and then executes the glass haze adjustment. In manual intervention mode, the system allows users to manually adjust the overall glass light transmittance level or set independent adjustment strategies for the windshield and the side windows.

9. The adjustment method as described in claim 7, characterized in that: The adjustment method also includes shutdown and data saving: after the vehicle is powered off, the sunshade adjustment controller executes the shutdown process and sends a voltage reset command to the electric glass drive circuit, so that each pixel unit gradually returns to the initial transparent state; the controller stores the adjustment parameters during this driving process in non-volatile memory as reference data for quick initialization when the vehicle is started next time, so as to improve the response speed and adapt to the personalized needs of different drivers.

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