Methods and apparatus for adjusting the light transmittance of glass

Abstract

This application discloses a method and apparatus for adjusting the light transmittance of glass, belonging to the field of vehicle technology. The method includes: acquiring characteristic information of the windshield of a first vehicle under external light illumination, the characteristic information being used to characterize the degree to which the windshield is affected by the external light; when the characteristic information meets the illumination conditions, acquiring illumination information of the external light illuminating the windshield and eye information of a target occupant inside the first vehicle, the eye information being used to characterize the degree to which the target occupant's eyes are affected by the external light; and adjusting the light transmittance of the windshield based on the illumination information and the eye information. This application reduces the impact of external light on a target occupant inside the first vehicle by adjusting the light transmittance of the windshield, preventing the target occupant from being unable to properly observe their surroundings due to external light.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a method and apparatus for adjusting the light transmittance of glass. Background Technology

[0002] With societal development, vehicles have gradually become an essential means of transportation. However, weather conditions often prevent drivers from clearly observing their surroundings while driving, easily leading to traffic accidents. For example, strong sunlight can penetrate the windshield and windows of a vehicle and shine into the driver's eyes, making it impossible for them to properly observe their surroundings. Summary of the Invention

[0003] This application provides a method and apparatus for adjusting the light transmittance of glass. By adjusting the light transmittance of vehicle glass (e.g., the windshield), this application reduces the impact of external light on the driver, preventing external light from hindering the driver's ability to properly observe the surrounding environment. The technical solution of this application is as follows.

[0004] In a first aspect, a method for adjusting the light transmittance of glass is provided, the method comprising:

[0005] The feature information of the windshield of a first vehicle under the illumination of external light is obtained, and the feature information is used to characterize the degree to which the windshield is affected by the external light.

[0006] When the feature information meets the illumination conditions, the illumination information of the external light illuminating the windshield and the eye information of the target person inside the first vehicle are acquired. The eye information is used to characterize the degree to which the target person's eyes are affected by the external light.

[0007] The light transmittance of the windshield is adjusted based on the illumination information and the eye information.

[0008] Optionally, adjusting the light transmittance of the windshield based on the illumination information and the eye information includes:

[0009] The blinking frequency of the target person is determined based on the eye information;

[0010] When the blinking frequency is greater than a preset frequency, the light transmittance of the windshield is adjusted based on the illumination information.

[0011] Optionally, adjusting the light transmittance of the windshield based on the illumination information and the eye information includes:

[0012] The eye condition of the target person is determined based on the eye information;

[0013] When the eyes are squinting, the light transmittance of the windshield is adjusted based on the illumination information.

[0014] Optionally, the illumination information includes the incident angle and illumination intensity, and adjusting the light transmittance of the windshield based on the illumination information includes:

[0015] The first transmittance of the windshield is determined based on the incident angle of the external light, the illumination intensity of the external light, and a first correspondence. The first correspondence includes a correspondence between at least one incident angle, at least one illumination intensity, and at least one transmittance. Each transmittance in the first correspondence is the ideal transmittance of the windshield under the corresponding incident angle and illumination intensity.

[0016] The light transmittance of the windshield is adjusted to the first light transmittance.

[0017] Optionally, the method further includes:

[0018] Based on the first and second light transmittance correspondence of the windshield, the second light transmittance of the window glass of the first vehicle is determined;

[0019] The light transmittance of the vehicle window glass is adjusted to the second light transmittance.

[0020] Optionally, the feature information includes temperature, and the illumination conditions include the windshield temperature being within a preset temperature range.

[0021] Optionally, the feature information includes ultraviolet transmittance, and the lighting conditions include the ultraviolet transmittance of the windshield being greater than a preset transmittance.

[0022] Optionally, both the windshield and the window glass are smart glass.

[0023] Optionally, the target person is a driver.

[0024] Secondly, a device for adjusting the light transmittance of glass is provided, the device comprising:

[0025] The first acquisition module is used to acquire feature information of the windshield of the first vehicle under the illumination of external light, the feature information being used to characterize the degree to which the windshield is affected by the external light;

[0026] The second acquisition module is used to acquire, when the feature information meets the illumination conditions, the illumination information of the external light illuminating the windshield and the eye information of the target person inside the first vehicle, wherein the eye information is used to characterize the degree to which the eyes of the target person are affected by the external light.

[0027] The first adjustment module is used to adjust the light transmittance of the windshield based on the illumination information and the eye information.

[0028] Optionally, the first adjustment module is used for:

[0029] The blinking frequency of the target person is determined based on the eye information;

[0030] When the blinking frequency is greater than a preset frequency, the light transmittance of the windshield is adjusted based on the illumination information.

[0031] Optionally, the first adjustment module is used for:

[0032] The eye condition of the target person is determined based on the eye information;

[0033] When the eyes are squinting, the light transmittance of the windshield is adjusted based on the illumination information.

[0034] Optionally, the illumination information includes the incident angle and illumination intensity, and the first adjustment module is used for:

[0035] The first transmittance of the windshield is determined based on the incident angle of the external light, the illumination intensity of the external light, and a first correspondence. The first correspondence includes a correspondence between at least one incident angle, at least one illumination intensity, and at least one transmittance. Each transmittance in the first correspondence is the ideal transmittance of the windshield under the corresponding incident angle and illumination intensity.

[0036] The light transmittance of the windshield is adjusted to the first light transmittance.

[0037] Optionally, the device further includes:

[0038] The determining module is used to determine the second light transmittance of the window glass of the first vehicle based on the first light transmittance and the second correspondence of the windshield.

[0039] The second adjustment module is used to adjust the light transmittance of the vehicle window glass to the second light transmittance.

[0040] Optionally, the feature information includes temperature, and the illumination conditions include the windshield temperature being within a preset temperature range.

[0041] Optionally, the feature information includes ultraviolet transmittance, and the lighting conditions include the ultraviolet transmittance of the windshield being greater than a preset transmittance.

[0042] Optionally, both the windshield and the window glass are smart glass.

[0043] Optionally, the target person is a driver.

[0044] Thirdly, a glass transmittance adjustment device is provided, including a memory and a processor, wherein the memory stores a computer program, which is loaded and executed by the processor to implement the glass transmittance adjustment method provided by the first aspect or any optional implementation thereof.

[0045] Fourthly, a computer-readable storage medium is provided, wherein a computer program is stored therein, which, when executed (e.g., executed by a processor), implements the method for adjusting the light transmittance of a glass provided by the first aspect or any optional implementation thereof.

[0046] Fifthly, a computer program product is provided, including a computer program / instruction that, when executed (e.g., executed by a processor), implements the method for adjusting the light transmittance of glass provided by the first aspect or any optional implementation thereof.

[0047] The technical solution provided in this application includes at least the following technical effects:

[0048] The method and apparatus for adjusting the light transmittance of glass provided in this application acquire illumination information of external light illuminating the windshield and eye information of a target occupant inside the vehicle, when the characteristic information of the windshield of a first vehicle meets the illumination conditions. Based on this illumination information and eye information, the light transmittance of the windshield is adjusted. Since the characteristic information characterizes the degree to which the windshield is affected by external light, and the eye information characterizes the degree to which the target occupant's eyes are affected by external light, adjusting the light transmittance of the windshield based on this illumination information and the target occupant's eye information when the characteristic information meets the illumination conditions can reduce the impact of external light on the target occupant's eyes, preventing the target occupant from being unable to properly observe the surrounding environment and ensuring driving safety.

[0049] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1This is a flowchart of a method for adjusting the light transmittance of glass according to an embodiment of this application;

[0052] Figure 2 This is a schematic diagram illustrating the installation location of a sensor according to an embodiment of this application;

[0053] Figure 3 This is a schematic diagram of a method for adjusting the light transmittance of glass provided in an embodiment of this application;

[0054] Figure 4 This is a schematic diagram of a glass transmittance adjustment device provided in an embodiment of this application;

[0055] Figure 5 This is a schematic diagram of a vehicle provided in an embodiment of this application.

[0056] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0058] With the continuous progress of society and the development of the automotive industry, vehicles are becoming increasingly common in people's lives. Often, due to weather conditions, drivers are unable to clearly observe their surroundings while driving, easily leading to traffic accidents. For example, strong sunlight shining through the windshield and windows of a vehicle can enter the driver's eyes, preventing them from properly observing their surroundings.

[0059] This application provides a method and apparatus for adjusting the light transmittance of glass. The method is executed by an adjustment device, which is a first vehicle or a component deployed in the first vehicle. The method is applicable to adjusting the light transmittance of the glass (e.g., the windshield) of the first vehicle. The adjustment device acquires characteristic information of the windshield of the first vehicle under external light illumination. When the characteristic information meets the illumination conditions, the adjustment device acquires illumination information of the external light illuminating the windshield and eye information of a target occupant (e.g., the driver) inside the first vehicle, and adjusts the light transmittance of the windshield based on the illumination information and the eye information. Since the characteristic information characterizes the degree to which the windshield is affected by the external light, and the eye information characterizes the degree to which the target occupant's eyes are affected by the external light, when the characteristic information meets the illumination conditions, the adjustment device can reduce the impact of external light on the target occupant's eyes and prevent the target occupant from being unable to properly observe the surrounding environment.

[0060] The technical solution of this application is described below. First, the method embodiments of this application are introduced.

[0061] Please refer to Figure 1 The diagram illustrates a flowchart of a method for adjusting the light transmittance of glass according to an embodiment of this application. This method is executed by a glass transmittance adjustment device deployed in a first vehicle. This adjustment device can be a vehicle computer, a main control unit (MCU), or a functional module integrated on the system motherboard, etc. See also... Figure 1 The method process includes the following steps S101 to S103.

[0062] S101. Obtain feature information of the windshield of the first vehicle under the illumination of external light, the feature information being used to characterize the degree to which the windshield is affected by the external light.

[0063] During the movement of the first vehicle, ambient light can shine onto its windshield and enter the vehicle through it. The adjustment device can acquire characteristic information about the windshield under ambient light. This characteristic information characterizes the degree to which the windshield is affected by the ambient light. The ambient light refers to the surrounding light outside the first vehicle, including but not limited to sunlight and light emitted from external light sources (such as streetlights or headlights of other vehicles).

[0064] Optionally, at least one feature information collector is provided on the windshield of the first vehicle. This feature information collector is used to collect feature information of the windshield under ambient light. The adjustment device obtains the feature information of the windshield under ambient light through this feature information collector. Figure 2 As shown, the windshield of the first vehicle is equipped with multiple feature information collectors A. The adjustment device acquires feature information of the windshield under external light illumination through these multiple feature information collectors A. These multiple feature information collectors include temperature sensors, ultraviolet sensors, etc.

[0065] In one embodiment, the feature information of the windshield includes temperature, and the at least one feature information acquisition device includes a temperature sensor for acquiring the temperature of the windshield. The adjustment device obtains the temperature of the windshield under external light irradiation through the temperature sensor.

[0066] In another embodiment, the feature information of the windshield includes ultraviolet transmittance, and the at least one feature information collector includes a first ultraviolet sensor and a second ultraviolet sensor. The first ultraviolet sensor is located on the outer side of the windshield (i.e., outside the first vehicle), and is used to collect the ultraviolet intensity of ambient light illuminating the outer side of the windshield. The second ultraviolet sensor is located on the inner side of the windshield (i.e., inside the first vehicle), and is used to collect the ultraviolet intensity of ambient light illuminating the inner side of the windshield (i.e., ambient light entering the first vehicle through the windshield). The ultraviolet sensor is a sensor for sensing ultraviolet intensity. The wavelength range that the ultraviolet sensor can sense is the ultraviolet wavelength range. Ultraviolet light can excite the ultraviolet sensor to generate electrons, thereby generating a current or voltage in the ultraviolet sensor. The ultraviolet intensity can be determined based on the current or voltage generated by the ultraviolet sensor. The adjustment device acquires the ultraviolet intensity of ambient light illuminating the outer side of the windshield via a first ultraviolet sensor, and the ultraviolet intensity of ambient light illuminating the inner side of the windshield via a second ultraviolet sensor. Based on the ultraviolet intensity of ambient light illuminating the outer and inner sides of the windshield, the adjustment device determines the ultraviolet transmittance of the windshield under ambient light irradiation. For example, the ultraviolet transmittance of the windshield under ambient light irradiation is: (a1 / a2)×100%, where a1 represents the ultraviolet intensity of ambient light illuminating the inner side of the windshield, and a2 represents the ultraviolet intensity of ambient light illuminating the outer side of the windshield.

[0067] S102. When the feature information meets the illumination conditions, acquire the illumination information of the external light shining on the windshield and the eye information of the target person inside the first vehicle. The eye information is used to characterize the degree to which the target person's eyes are affected by the external light.

[0068] After acquiring feature information of the windshield of the first vehicle, the adjustment device determines whether the feature information meets the illumination conditions. If the feature information meets the illumination conditions, the adjustment device executes S102 to acquire illumination information of the external light and eye information of the target person inside the first vehicle. Optionally, the target person is the driver. Optionally, if the feature information does not meet the illumination conditions, the adjustment device continues to execute S101, for example, the adjustment device executes S101 periodically.

[0069] In one embodiment, the feature information includes temperature, and the illumination condition includes the windshield temperature being within a preset temperature range. The adjustment device determining whether the feature information satisfies the illumination condition includes determining whether the windshield temperature is within the preset temperature range. Optionally, if the windshield temperature is within the preset temperature range, the adjustment device determines that the feature information satisfies the illumination condition. If the windshield temperature is not within the preset temperature range, the adjustment device determines that the feature information does not satisfy the illumination condition. For example, the preset temperature range is a temperature range outside a target temperature range, where the lower limit of the target temperature range is a first temperature threshold, and the upper limit of the target temperature range is a second temperature threshold. That is, the preset temperature range is a temperature range that diverges away from the target temperature range. For example, the adjustment device determines whether the windshield temperature is within the target temperature range. If the windshield temperature is within the target temperature range, the adjustment device determines that the windshield temperature is not within the preset temperature range. If the temperature of the windshield is not within the target temperature range, the adjustment device determines that the temperature of the windshield is within the preset temperature range.

[0070] In another embodiment, the feature information includes ultraviolet transmittance, and the illumination condition includes the ultraviolet transmittance of the windshield being greater than a preset transmittance. The adjustment device determines whether the feature information satisfies the illumination condition by determining whether the ultraviolet transmittance of the windshield is greater than the preset transmittance. Optionally, if the ultraviolet transmittance of the windshield is greater than the preset transmittance, the adjustment device determines that the feature information satisfies the illumination condition. If the ultraviolet transmittance of the windshield is not greater than the preset transmittance, the adjustment device determines that the feature information does not satisfy the illumination condition.

[0071] It should be noted that the above-mentioned embodiments for determining whether the feature information of the windshield meets the illumination conditions can be implemented in combination or independently, and the embodiments of this application do not limit this.

[0072] In an optional embodiment, when the adjustment device determines that the feature information of the windshield of the first vehicle meets the illumination conditions, the adjustment device generates an illumination information acquisition command, and acquires the illumination information of the external light illuminating the windshield according to the illumination information acquisition command. In one embodiment, the illumination information of the external light illuminating the windshield of the first vehicle includes the incident angle of the external light on the windshield and the illumination intensity of the external light illuminating the windshield. The first vehicle includes an illumination acquisition component, which may be a light sensor, for acquiring the illumination intensity of the external light illuminating the windshield of the first vehicle. The illumination information acquisition command includes an illumination intensity acquisition command, which the adjustment device sends to the illumination acquisition component. The illumination acquisition component acquires the illumination intensity of the external light illuminating the windshield of the first vehicle according to the illumination intensity acquisition command and sends the illumination intensity to the adjustment device. The adjustment device receives the illumination intensity sent by the illumination acquisition component.

[0073] Optionally, the external light source is sunlight. The adjustment device obtains the solar altitude angle based on the position information of the first vehicle, and determines the incident angle of the external light source on the windshield based on the solar altitude angle. The solar altitude angle is the angle between the incident direction of the sunlight and the ground plane at the position of the first vehicle. The adjustment device obtains the tilt angle of the windshield of the first vehicle, and determines the incident angle of the external light source based on the tilt angle of the windshield and the solar altitude angle (the incident angle is the angle between the incident direction of the sunlight and the windshield).

[0074] In an optional embodiment, when the adjustment device determines that the feature information of the windshield of the first vehicle meets the illumination conditions, the adjustment device generates an image acquisition command, and acquires the eye information of the target person inside the first vehicle according to the image acquisition command. In one embodiment, the first vehicle includes a camera assembly for acquiring eye images of the target person inside the first vehicle. The adjustment device sends the image acquisition command to the camera assembly. The camera assembly acquires the eye image of the target person according to the image acquisition command and sends the eye image of the target person to the adjustment device. The adjustment device receives the eye image of the target person and determines the eye information of the target person based on the eye image. The camera assembly is located on the steering wheel of the first vehicle, the roof of the first vehicle, etc.

[0075] In an optional embodiment, the adjustment device determines the eye information of the target person based on the eye image of the target person, including at least one of the following two implementation methods.

[0076] The first implementation involves an adjustment device controlling a camera assembly to continuously acquire multiple eye images of a target person. The adjustment device uses a neural network to obtain a segmented image corresponding to each of the multiple eye images. Based on these segmented images, the adjustment device determines the target person's eye information. For example, for each of the multiple eye images, the adjustment device inputs the eye image into the segmentation neural network, which segments and annotates the image to obtain the corresponding segmented image, and then outputs the segmented image. Each segmented image includes eye movement markers and bounding boxes for the eye region of the target person. The eye movement markers include either a closed eye marker or an open eye marker. The adjustment device determines the target person's eye movement markers from the segmented images as their eye information. In other words, the target person's eye information includes the eye movement markers from the segmented images.

[0077] The second implementation method involves an adjustment device controlling a camera assembly to acquire at least one eye image of the target person. The adjustment device uses an image analysis algorithm to analyze this image and determines the target person's eye state information based on the analysis results. This eye state information is then defined as the target person's eye information. For example, this eye state information includes squinting, open, and closed eye states. For example, the analysis results of the at least one eye image include the target person's pupil size, and the adjustment device determines the target person's eye state information based on this pupil size. For instance, if the pupil size is greater than a first size, the adjustment device determines the target person's eye state information as open. If the pupil size is less than the first size but greater than a second size, the adjustment device determines the target person's eye state information as squinting. If the pupil size is less than the second size, the adjustment device determines the target person's eye state information as closed.

[0078] S103. Adjust the light transmittance of the windshield based on the illumination information and the eye information.

[0079] In an optional embodiment, the adjustment device determines whether the light transmittance adjustment condition is met based on the eye information. If the light transmittance adjustment condition is met based on the eye information, the adjustment device adjusts the light transmittance of the windshield based on the illumination information. If the light transmittance adjustment condition is not met based on the eye information, the adjustment device does not adjust the light transmittance of the windshield, and the adjustment device continues to execute S101 to S102. For example, the adjustment device periodically executes S101 to S102.

[0080] In the embodiments of this application, the adjustment device determines whether the transmittance adjustment conditions are met based on the eye information of the target person, including at least one of the following two implementation methods.

[0081] The first implementation (corresponding to the first implementation in S102): The adjustment device determines the blinking frequency of the target person based on the target person's eye information. The adjustment device determines whether the target person's blinking frequency is greater than a preset frequency. If the target person's blinking frequency is greater than the preset frequency, the adjustment device determines that the transmittance adjustment condition is met, and then the adjustment device adjusts the transmittance of the windshield based on the illumination information. If the target person's blinking frequency is not greater than the preset frequency, the adjustment device determines that the transmittance adjustment condition is not met. In one embodiment, the eye information includes eye movement markers in a series of consecutive eye images of the target person, and the adjustment device determines the target person's blinking frequency based on the eye movement markers in the series of consecutive eye images. For example, the adjustment device sequentially searches for the eye movement markers corresponding to each eye image according to the shooting order of the series of consecutive eye images, and the adjustment device determines the target person's blinking frequency based on the number of blinks and the duration of shooting the series of consecutive eye images. The blink count is the number of times the adjustment device finds the closed-eye marker and the adjacent open-eye marker.

[0082] The second implementation (corresponding to the second implementation in S102): The adjustment device determines the target person's eye state based on their eye information. The adjustment device determines whether the target person's eye state is squinting. If the target person's eye state is squinting, the adjustment device determines that the light transmittance adjustment condition is met, and then adjusts the light transmittance of the windshield based on the illumination information. If the target person's eye state is not squinting, the adjustment device determines that the light transmittance adjustment condition is not met.

[0083] In an optional embodiment, the adjustment device includes a first correspondence, which includes a correspondence between at least one incident angle, at least one light intensity, and at least one transmittance. Each transmittance in the first correspondence is the ideal transmittance of the windshield under the corresponding incident angle and corresponding light intensity. The ideal transmittance is the transmittance of the windshield when external light shines through the windshield and onto the eyes of the target person under the corresponding incident angle and corresponding light intensity, assuming the target person's eyes are in a comfortable state. The illumination information of the external light illuminating the windshield of the first vehicle acquired by the adjustment device includes the incident angle of the external light (i.e., the incident angle of the external light on the windshield) and the light intensity of the external light illuminating the windshield. The adjustment device adjusts the light transmittance of the windshield based on the illumination information, including: the adjustment device determining a first light transmittance of the windshield based on the incident angle of the external light, the illumination intensity of the external light, and a first correspondence; and adjusting the light transmittance of the windshield to the first light transmittance. Optionally, the adjustment device searches for a first correspondence based on the incident angle of the external light and the illumination intensity of the external light to determine a light transmittance corresponding to both the incident angle and the illumination intensity of the external light within the first correspondence; this light transmittance is the first light transmittance. The first correspondence is determined experimentally beforehand for the windshield.

[0084] In one example, the first correspondence is a one-to-one correspondence between the angle of incidence, illuminance, and transmittance, as shown in Table 1 below. Referring to Table 1, the first correspondence includes multiple angles of incidence, multiple illuminances, and multiple transmittances, all of which correspond one-to-one. For example, angle of incidence 1, illuminance 1, and transmittance A1 correspond one-to-one; transmittance A1 is the ideal transmittance of the windshield when external light of illuminance 1 enters the windshield at angle of incidence 1. Similarly, angle of incidence 2, illuminance 2, and transmittance A2 correspond one-to-one; transmittance A2 is the ideal transmittance of the windshield when external light of illuminance 2 enters the windshield at angle of incidence 2. Angle of incidence 3, illuminance 3, and transmittance A3 are in a one-to-one correspondence. Transmittance A3 is the ideal transmittance of the windshield when external light of illuminance 3 enters the windshield at an angle of incidence 3. And so on. It should be noted that in the first correspondence shown in Table 1, some angles of incidence may be equal, or they may all be unequal. Similarly, some illuminances may be equal, or they may all be unequal. Some transmittances may be equal, or they may all be unequal. This application does not limit this aspect in its embodiments.

[0085] Table 1

[0086] Angle of incidence of external light Light intensity of external light Light transmittance of the windshield Angle of incidence 1 Light intensity 1 Light transmittance A1 Angle of incidence 2 Light intensity 2 Light transmittance A2 Angle of incidence 3 Light intensity 3 Light transmittance A3 ...... ...... ......

[0087] In one example, the angle of incidence of the ambient light illuminating the windshield of the first vehicle (i.e., the angle of incidence of the ambient light on the windshield) is called the angle of incidence 1, and the illuminance of the ambient light illuminating the windshield is called the illuminance 1. The adjustment device, based on the angle of incidence 1 and the illuminance 1, searches for a first correspondence as shown in Table 1 to determine a first transmittance of transmittance A1. The adjustment device then adjusts the transmittance of the windshield of the first vehicle to transmittance A1.

[0088] The windshield is a smart glass. For example, the windshield is liquid crystal glass, and the adjustment device adjusts the light transmittance of the windshield electronically. For instance, the adjustment device adjusts the control voltage of the windshield to regulate the distribution of liquid crystal molecules in the smart glass, thereby adjusting the light transmittance. The adjustment device can adjust the light transmittance of all or part of the windshield to a first light transmittance. For example, the windshield includes an eye-box area, which is the area of ​​the windshield corresponding to the eyes of a target person. External light shines into the eyes of the target person through the eye-box area, and the adjustment device adjusts the light transmittance of the eye-box area to the first light transmittance.

[0089] In an optional embodiment, after adjusting the light transmittance of the windshield of the first vehicle, the adjusting device adjusts the light transmittance of the vehicle's windows based on the adjusted light transmittance of the windshield. For example, the adjusting device includes a second correspondence, which includes a correspondence between the light transmittance of the windshield and the light transmittance of the vehicle's windows. After adjusting the light transmittance of the windshield to a first light transmittance, the adjusting device determines a second light transmittance of the vehicle's windows based on the first light transmittance and the second correspondence, and then adjusts the light transmittance of the vehicle's windows to the second light transmittance. Optionally, the adjusting device searches for the second correspondence based on the first light transmittance to determine the light transmittance of the window corresponding to the first light transmittance in the second correspondence; this light transmittance of the window is the second light transmittance. Optionally, the second correspondence is determined by adjusting the transmittance of the windshield glass based on different transmittance of the windshield glass during the experiment, thereby establishing the correspondence between the transmittance of the windshield glass and the transmittance of the window glass. The transmittance of the window glass is the transmittance of the window glass when the experimenter can normally observe the external environment of the vehicle.

[0090] In one example, the second correspondence is a one-to-one correspondence between the light transmittance of the windshield and the light transmittance of the vehicle window glass, as shown in Table 2 below. Referring to Table 2, the second correspondence includes multiple light transmittance values ​​for both the windshield and the vehicle window glass, with each of these values ​​corresponding to a specific light transmittance. For example, transmittance A1 corresponds to transmittance B1, transmittance A2 to transmittance B2, and transmittance A3 to transmittance B3, and so on.

[0091] Table 2

[0092] Light transmittance of the windshield Light transmittance of car window glass Light transmittance A1 Light transmittance B1 Light transmittance A2 Light transmittance B2 Light transmittance A3 Light transmittance B3 ...... ......

[0093] In one example, the light transmittance of the windshield is transmittance A1. The adjustment device finds the second correspondence shown in Table 2 based on transmittance A1 to determine the light transmittance of the window glass as transmittance B1. The adjustment device then adjusts the light transmittance of the window glass to transmittance B1.

[0094] This application embodiment illustrates an example of an adjustment device automatically adjusting the light transmittance of a windshield based on characteristic information of the windshield of a first vehicle under external light illumination, illumination information of the external light illuminating the windshield, and eye information of a target person inside the first vehicle. In other embodiments, the light transmittance of the windshield can be adjusted by a user (e.g., a target person). For example, the target person triggers an adjustment command via voice, and the adjustment device adjusts the light transmittance of the windshield based on the command. For instance, the target person triggers the adjustment command by saying "reduce the light transmittance of the windshield by 5%", and the adjustment device reduces the light transmittance of the windshield by 5% based on the command. Optionally, after adjusting the light transmittance of the windshield to a first light transmittance, if the target person feels that the external light affects their observation of the surrounding environment, the target person triggers an adjustment command via voice, and the adjustment device adjusts the light transmittance of the windshield to a third light transmittance based on the command. In an optional embodiment, after the adjustment device adjusts the light transmittance of the windshield to the third light transmittance based on the adjustment command, the adjustment device updates the first light transmittance in the first correspondence with the incident angle of the external light and the illumination intensity of the external light to the third light transmittance, so as to adapt to the actual needs of the user.

[0095] In this embodiment, the first vehicle integrates a glass transmittance adjustment function. After the glass transmittance adjustment function is activated, the adjustment device in the first vehicle executes the above-described S101 to S103 steps. After the glass transmittance adjustment function is deactivated, the adjustment device in the first vehicle does not execute the above-described S101 to S103 steps. Optionally, the first vehicle includes a switch for the glass transmittance adjustment function. This switch can be a soft switch, a hard switch, a voice switch, etc., and the user can use this switch to activate or deactivate the glass transmittance adjustment function.

[0096] In summary, the adjustment method provided in this application involves an adjustment device acquiring illumination information of the external light illuminating the windshield and eye information of a target person inside the vehicle when the feature information of the windshield of the first vehicle meets the illumination conditions. Based on this illumination information and eye information, the device adjusts the light transmittance of the windshield. Since the feature information characterizes the degree to which the windshield is affected by the external light, and the eye information characterizes the degree to which the target person's eyes are affected by the external light, adjusting the light transmittance of the windshield based on this illumination information and the target person's eye information when the feature information meets the illumination conditions can reduce the impact of external light on the target person's eyes and prevent the target person from being unable to properly observe their surroundings.

[0097] To facilitate understanding of the technical solution of this application, an example is given below to illustrate the technical solution of this application.

[0098] For example, such as Figure 3 As shown, the target occupant of the first vehicle activates the glass transmittance adjustment function via voice switch. The adjustment device acquires the temperature of the windshield of the first vehicle from a temperature sensor. When the windshield temperature is within a preset range, the device controls a camera assembly to capture an image of the target occupant's eyes. Based on this image, the device determines the target occupant's eye information. Based on this eye information, the adjustment device determines the target occupant's blinking frequency. If the blinking frequency is greater than a preset frequency, the device acquires the ambient light intensity from a light sensor. Based on the incident angle of the ambient light, the ambient light intensity, and a first correspondence, the device determines the first transmittance of the windshield and adjusts the transmittance of the windshield to the first transmittance. After adjusting the transmittance of the windshield, the device adjusts the transmittance of the vehicle's windows according to the adjusted transmittance of the windshield.

[0099] The explanation and beneficial effects of this embodiment can be found in the above description. Figure 1 The specific method for adjusting the light transmittance of the glass shown will not be repeated here.

[0100] The following are embodiments of the apparatus of this application, which can be used to execute the embodiments of the method of this application. For details not disclosed in the embodiments of the apparatus of this application, please refer to the embodiments of the method of this application.

[0101] Please refer to Figure 4 The diagram illustrates a block diagram of a glass transmittance adjustment device 400 provided in an embodiment of this application. The adjustment device 400 is used to perform... Figure 1 and Figure 3 The illustrated embodiment provides a method for adjusting the light transmittance of glass. See also... Figure 4 The adjustment device 400 includes a first acquisition module 401, a second acquisition module 402, and a first adjustment module 403.

[0102] The first acquisition module 401 is used to acquire feature information of the windshield of the first vehicle under the illumination of external light, and the feature information is used to characterize the degree to which the windshield is affected by the external light.

[0103] The second acquisition module 402 is used to acquire, when the feature information meets the illumination conditions, the illumination information of the external light shining on the windshield and the eye information of the target person inside the first vehicle, the eye information being used to characterize the degree to which the target person's eyes are affected by the external light.

[0104] The first adjustment module 403 is used to adjust the light transmittance of the windshield based on the illumination information and the eye information.

[0105] Optionally, the first adjustment module 403 is used to: determine the blinking frequency of the target person based on the eye information; and adjust the light transmittance of the windshield based on the illumination information when the blinking frequency is greater than a preset frequency.

[0106] Optionally, the first adjustment module 403 is used to: determine the eye state of the target person based on the eye information; and adjust the light transmittance of the windshield based on the light information when the eye state is squinting.

[0107] Optionally, the illumination information includes the incident angle and illumination intensity, and the first adjustment module 403 is used for:

[0108] The first transmittance of the windshield is determined based on the incident angle of the external light, the illumination intensity of the external light, and the first correspondence. The first correspondence includes a correspondence between at least one incident angle, at least one illumination intensity, and at least one transmittance. Each transmittance in the first correspondence is the ideal transmittance of the windshield under the corresponding incident angle and illumination intensity.

[0109] Adjust the light transmittance of the windshield to the first level.

[0110] Optionally, the adjusting device 400 further includes:

[0111] The determining module 404 is used to determine the second light transmittance of the window glass of the first vehicle based on the first light transmittance and the second correspondence of the windshield.

[0112] The second adjustment module 405 is used to adjust the light transmittance of the vehicle window glass to a second light transmittance.

[0113] Optionally, the feature information includes temperature, and the lighting conditions include the windshield temperature being within a preset temperature range.

[0114] Optionally, both the windshield and the window glass are smart glass.

[0115] Optional, the target personnel is the driver.

[0116] In summary, in the glass transmittance adjustment device provided in this application embodiment, the first acquisition module acquires feature information of the windshield of the first vehicle under external light illumination, and the second acquisition module acquires illumination information of the external light illuminating the windshield and eye information of the target person inside the first vehicle when the feature information meets the illumination conditions. The first adjustment module adjusts the transmittance of the windshield based on the illumination information and the eye information. Since the feature information is used to characterize the degree to which the windshield is affected by external light, and the eye information is used to characterize the degree to which the target person's eyes are affected by external light, adjusting the transmittance of the windshield based on the illumination information and the target person's eye information when the feature information meets the illumination conditions can reduce the impact of external light on the target person's eyes and prevent the target person from being unable to normally observe the surrounding environment due to external light.

[0117] This application provides a device for adjusting the light transmittance of glass, including a memory and a processor. The memory stores a computer program, which is loaded and executed by the processor to implement all or part of the steps of the glass light transmittance adjustment method provided in the above-described method embodiments.

[0118] The glass transmittance adjustment device provided in this application embodiment can be a vehicle or a functional component deployed in a vehicle. Optionally, the adjustment device is a functional component deployed in a vehicle, and this application embodiment also provides a vehicle including the adjustment device.

[0119] As an example, please refer to Figure 5 , Figure 5 This is a schematic diagram of a vehicle 500 provided in an embodiment of this application. The vehicle 500 includes the adjustment device provided in the above embodiment to perform the above adjustment method.

[0120] Typically, the vehicle 500 includes a processor 501 and a memory 502.

[0121] Processor 501 may include one or more processing cores, such as a quad-core processor, an octa-core processor, etc. Processor 501 may be implemented using at least one hardware form selected from DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), and PLA (Programmable Logic Array). Processor 501 may also include a main processor and a coprocessor. The main processor, also known as a CPU (Central Processing Unit), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, processor 501 may integrate a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, processor 501 may also include an AI (Artificial Intelligence) processor, which is used to handle computational operations related to machine learning.

[0122] The memory 502 may include one or more computer-readable storage media, which may be non-transitory. The memory 502 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In some embodiments, the non-transitory computer-readable storage media in the memory 502 is used to store a computer program, the computer program including at least one instruction, which is executed by the processor 501 to implement the glass transmittance adjustment method provided in the embodiments of this application.

[0123] In some embodiments, the vehicle 500 may also optionally include a peripheral device interface 503 and at least one peripheral device. The processor 501, memory 502, and peripheral device interface 503 can be connected via a bus or signal line. Each peripheral device can be connected to the peripheral device interface 503 via a bus, signal line, or circuit board. Specifically, the peripheral device includes at least one of the following: a radio frequency circuit 504, a touch display screen 505, a camera 506, an audio circuit 507, a positioning component 508, and a power supply 509.

[0124] Peripheral device interface 503 can be used to connect at least one I / O (Input / Output) related peripheral device to processor 501 and memory 502. In some embodiments, processor 501, memory 502 and peripheral device interface 503 are integrated on the same chip or circuit board; in some other embodiments, any one or two of processor 501, memory 502 and peripheral device interface 503 can be implemented on separate chips or circuit boards, which is not limited in this embodiment.

[0125] The radio frequency (RF) circuit 504 is used to receive and transmit RF (Radio Frequency) signals, also known as electromagnetic signals. The RF circuit 504 communicates with communication networks and other communication devices via electromagnetic signals. The RF circuit 504 converts electrical signals into electromagnetic signals for transmission, or converts received electromagnetic signals back into electrical signals. Optionally, the RF circuit 504 includes: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a user identity module card, etc. The RF circuit 504 can communicate with other terminals through at least one wireless communication protocol. This wireless communication protocol includes, but is not limited to: the World Wide Web, metropolitan area networks, intranets, various generations of mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and / or WiFi (Wireless Fidelity) networks. In some embodiments, the RF circuit 504 may also include circuitry related to NFC (Near Field Communication), which is not limited in this application embodiment.

[0126] Display screen 505 is used to display a UI (User Interface). This UI may include graphics, text, icons, videos, and any combination thereof. When display screen 505 is a touch display screen, it also has the ability to collect touch signals on or above its surface. These touch signals can be input as control signals to processor 501 for processing. In this case, display screen 505 can also be used to provide virtual buttons and / or a virtual keyboard, also known as soft buttons and / or a soft keyboard. In some embodiments, there may be one display screen 505, located on the front panel of the vehicle 500; in other embodiments, there may be at least two display screens, respectively located on different surfaces of the vehicle 500 or in a folded design; in still other embodiments, display screen 505 may be a flexible display screen, located on a curved or folded surface of the vehicle 500. Furthermore, display screen 505 may be configured as a non-rectangular, irregular shape, i.e., a non-rectangular screen. Display screen 505 may be made of materials such as LCD (Liquid Crystal Display) or OLED (Organic Light-Emitting Diode).

[0127] Camera assembly 506 is used to acquire images or videos. Typically, camera assembly 506 includes a first camera and a second camera. The first camera is positioned inside the vehicle, and the second camera is positioned around the vehicle's perimeter. The first camera is used to acquire images of the target person, and the second camera is used to acquire images of the environment surrounding the vehicle.

[0128] The audio circuit 507 may include a microphone and a speaker. The microphone is used to collect sound waves from the user and the environment, converting the sound waves into electrical signals that are input to the processor 501 for processing, or input to the radio frequency circuit 504 for voice communication. For stereo sound acquisition or noise reduction purposes, multiple microphones may be used, each positioned at a different location within the vehicle 500. The microphone may also be an array microphone or an omnidirectional microphone. The speaker is used to convert the electrical signals from the processor 501 or the radio frequency circuit 504 into sound waves. The speaker may be a conventional diaphragm speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, it can convert electrical signals not only into audible sound waves but also into inaudible sound waves for purposes such as distance measurement. In some embodiments, the audio circuit 507 may also include a headphone jack.

[0129] The positioning component 508 is used to determine the current geographical location of the vehicle 500 in order to enable navigation or LBS (Location Based Service). The positioning component 508 can be a positioning component based on the US GPS (Global Positioning System), China's BeiDou system, or Russia's Galileo system.

[0130] Power source 509 is used to supply power to the various components in vehicle 500. Power source 509 can be AC ​​power, DC power, a disposable battery, or a rechargeable battery. When power source 509 includes a rechargeable battery, the rechargeable battery can be a wired rechargeable battery or a wireless rechargeable battery. A wired rechargeable battery is a battery that is charged via a wired line, while a wireless rechargeable battery is a battery that is charged via a wireless coil. The rechargeable battery can also be used to support fast charging technology.

[0131] In some embodiments, the vehicle 500 further includes one or more sensors 510. The one or more sensors 510 include, but are not limited to: an acceleration sensor 511, a gyroscope sensor 512, a pressure sensor 513, a fingerprint sensor 514, an optical sensor 515, a temperature sensor 516, and an ultraviolet sensor 517.

[0132] Accelerometer 511 can detect the magnitude of acceleration on the three axes of a coordinate system established with respect to the vehicle 500. For example, accelerometer 511 can be used to detect the components of gravitational acceleration on the three axes. Processor 501 can control touchscreen 505 to display the user interface in landscape or portrait view based on the gravitational acceleration signal acquired by accelerometer 511. Accelerometer 511 can also be used for games or for acquiring user motion data.

[0133] The gyroscope sensor 512 can detect the orientation and rotation angle of the vehicle 500. The gyroscope sensor 512, in conjunction with the accelerometer sensor 511, can collect 3D motion data from the user on the vehicle 500. Based on the data collected by the gyroscope sensor 512, the processor 501 can perform the following functions: motion sensing (e.g., changing the UI based on the user's tilt), image stabilization during shooting, game control, and inertial navigation.

[0134] The pressure sensor 513 can be disposed on the side frame of the vehicle 500 and / or on the lower layer of the touch display screen 505. When the pressure sensor 513 is disposed on the side frame of the vehicle 500, it can detect the user's grip signal on the vehicle 500, and the processor 501 can perform left / right hand recognition or quick operation based on the grip signal collected by the pressure sensor 513. When the pressure sensor 513 is disposed on the lower layer of the touch display screen 505, the processor 501 can control the operable controls on the UI interface based on the user's pressure operation on the touch display screen 505. The operable controls include at least one of button controls, scroll bar controls, icon controls, and menu controls.

[0135] The fingerprint sensor 514 is used to collect the user's fingerprint. The processor 501 identifies the user's identity based on the fingerprint collected by the fingerprint sensor 514, or the fingerprint sensor 514 identifies the user's identity based on the collected fingerprint. When the user's identity is identified as trusted, the processor 501 authorizes the user to perform relevant sensitive operations, including unlocking the screen, viewing encrypted information, downloading software, making payments, and changing settings. The fingerprint sensor 514 can be located on the front, back, or side of the vehicle 500. When the vehicle 500 has physical buttons or a manufacturer's logo, the fingerprint sensor 514 can be integrated with the physical buttons or manufacturer's logo.

[0136] An optical sensor 515 is used to collect ambient light intensity. In one embodiment, the processor 501 can control the display brightness of the touch screen 505 based on the ambient light intensity collected by the optical sensor 515. Specifically, when the ambient light intensity is high, the display brightness of the touch screen 505 is increased; when the ambient light intensity is low, the display brightness of the touch screen 505 is decreased. In another embodiment, the processor 501 can also dynamically adjust the shooting parameters of the camera assembly 506 based on the ambient light intensity collected by the optical sensor 515.

[0137] Temperature sensor 516 is typically located on the windshield of a vehicle. Temperature sensor 516 is used to collect the temperature of the windshield.

[0138] The UV sensor 517 is typically mounted on the windshield. It is used to detect the intensity of ultraviolet radiation from ambient light.

[0139] Those skilled in the art will understand that Figure 5 The structure shown does not constitute a limitation on the vehicle 500 and may include more or fewer components than shown, or combine certain components, or use different component arrangements.

[0140] Based on the same inventive concept, embodiments of this application also provide a computer-readable storage medium storing a computer program that, when executed (e.g., executed by a processor, adjustment device, etc.), implements the glass transmittance adjustment method provided in the above-described method embodiments.

[0141] It is worth noting that the computer-readable storage medium mentioned in the embodiments of this application can be a non-volatile storage medium, in other words, it can be a non-transient storage medium.

[0142] Based on the same inventive concept, this application also provides a computer program product, including a computer program / instruction, which, when executed (e.g., executed by a processor, adjustment device, etc.), implements the glass transmittance adjustment method provided in the above method embodiments.

[0143] It should be understood that all or part of the steps of the above embodiments can be implemented by software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented in whole or in part as a computer program product. A computer program product includes one or more computer instructions. The computer instructions can be stored in the above-described computer-readable storage medium.

[0144] It should be understood that "at least one" as mentioned herein refers to one or more, and "multiple" refers to two or more. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. In addition, in order to clearly describe the technical solutions of the embodiments of this application, the terms "first," "second," etc., are used in the embodiments of this application to distinguish identical or similar items with substantially the same function and effect. Those skilled in the art will understand that the terms "first," "second," etc., do not limit the quantity or execution order, and the terms "first," "second," etc., are not necessarily different.

[0145] The method embodiments and system embodiments provided in this application can be referenced interchangeably, and this application does not limit them. The order of operations in the method embodiments provided in this application can be appropriately adjusted, and operations can be added or removed as needed. Any variations that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application, and therefore will not be elaborated further.

[0146] In the corresponding embodiments provided in this application, it should be understood that the disclosed systems, etc., can be implemented by other configuration methods. For example, the system embodiments described above are merely illustrative. For instance, the division of modules is only a logical functional division, and there may be other division methods in actual implementation. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0147] The modules described as separate components may or may not be physically separate, and the components described as modules may or may not be physical modules. Some or all of the modules can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0148] It should be noted that all information (including but not limited to vehicle equipment information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.), and signals involved in this application have been authorized by the user or fully authorized by all parties, and the collection, use, and processing of related data must comply with the relevant laws, regulations, and standards of the relevant countries and regions. For example, the feature information, illumination information, and eye information involved in this application were all obtained with full authorization.

[0149] The above are merely optional embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for adjusting the light transmittance of glass, characterized in that, The method includes: The feature information of the windshield of a first vehicle under the illumination of external light is obtained, and the feature information is used to characterize the degree to which the windshield is affected by the external light. When the feature information meets the illumination conditions, the illumination information of the external light illuminating the windshield and the eye information of the target person inside the first vehicle are acquired. The eye information is used to characterize the degree to which the target person's eyes are affected by the external light. The light transmittance of the windshield is adjusted based on the illumination information and the eye information. Adjusting the light transmittance of the windshield based on the illumination information and the eye information includes: The blinking frequency of the target person is determined based on the eye information; When the blinking frequency is greater than a preset frequency, the light transmittance of the windshield is adjusted based on the illumination information. The illumination information includes the incident angle and illumination intensity, and the adjustment of the light transmittance of the windshield based on the illumination information includes: The first transmittance of the windshield is determined based on the incident angle of the external light, the illumination intensity of the external light, and a first correspondence. The first correspondence includes a correspondence between at least one incident angle, at least one illumination intensity, and at least one transmittance. Each transmittance in the first correspondence is the ideal transmittance of the windshield under the corresponding incident angle and illumination intensity. The light transmittance of the windshield is adjusted to the first light transmittance.

2. The method according to claim 1, characterized in that, Adjusting the light transmittance of the windshield based on the illumination information and the eye information includes: The eye condition of the target person is determined based on the eye information; When the eyes are squinting, the light transmittance of the windshield is adjusted based on the illumination information.

3. The method according to claim 1, characterized in that, The method further includes: Based on the first and second light transmittance correspondence of the windshield, the second light transmittance of the window glass of the first vehicle is determined; The light transmittance of the vehicle window glass is adjusted to the second light transmittance.

4. A device for adjusting the light transmittance of glass, characterized in that, The device includes: The first acquisition module is used to acquire feature information of the windshield of the first vehicle under the illumination of external light, the feature information being used to characterize the degree to which the windshield is affected by the external light; The second acquisition module is used to acquire, when the feature information meets the illumination conditions, the illumination information of the external light illuminating the windshield and the eye information of the target person inside the first vehicle, wherein the eye information is used to characterize the degree to which the eyes of the target person are affected by the external light. The first adjustment module is used to adjust the light transmittance of the windshield based on the illumination information and the eye information. The first adjustment module is used for: The blinking frequency of the target person is determined based on the eye information; When the blinking frequency is greater than a preset frequency, the light transmittance of the windshield is adjusted based on the illumination information. The illumination information includes the incident angle and illumination intensity, and the first adjustment module is used for: The first transmittance of the windshield is determined based on the incident angle of the external light, the illumination intensity of the external light, and a first correspondence. The first correspondence includes a correspondence between at least one incident angle, at least one illumination intensity, and at least one transmittance. Each transmittance in the first correspondence is the ideal transmittance of the windshield under the corresponding incident angle and illumination intensity. The light transmittance of the windshield is adjusted to the first light transmittance.

5. The apparatus according to claim 4, characterized in that, The first adjustment module is used for: The eye condition of the target person is determined based on the eye information; When the eyes are squinting, the light transmittance of the windshield is adjusted based on the illumination information.

6. The apparatus according to claim 4, characterized in that, The device further includes: The determining module is used to determine the second light transmittance of the window glass of the first vehicle based on the first light transmittance and the second correspondence of the windshield. The second adjustment module is used to adjust the light transmittance of the vehicle window glass to the second light transmittance.

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