Light transmittance adjusting method, device, equipment, storage medium and product

Abstract

The application discloses a light transmittance adjusting method, device, equipment, storage medium and product, relates to the vehicle control technical field, and the method comprises the following steps: detecting the light intensity and light source position of the light source in front of the vehicle; judging whether the light source is a strong light source according to the light intensity; if yes, determining the light source angle according to the light source position; and when the light source angle is less than or equal to a preset first angle, adjusting the light transmittance of the vehicle windshield through a dimming film according to the light source angle and the light intensity. Compared with the vehicle control problem in the prior art that control is too complex and cannot cope with the sudden appearance of a strong light source, which leads to dizziness or eye discomfort of the driver, the application adjusts the light transmittance of the vehicle windshield through a dimming film according to the light source angle and the light intensity, thereby improving the safety and comfort of driving.

Description

Technical Field

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

[0002] When a vehicle is in motion, if another vehicle suddenly turns on its high beams, or if the light suddenly brightens when the vehicle emerges from a tunnel, the driver will experience significant eye discomfort and be unable to see clearly what is in front of them. This can easily lead to loss of vehicle control or an accident. Therefore, it is necessary to design the vehicle to address safety issues when the light intensity suddenly increases. Summary of the Invention

[0003] The main objective of this application is to provide a method, apparatus, device, storage medium, and product for adjusting light transmittance, aiming to solve the technical problem in the prior art where the control is too complex and cannot cope with the vehicle control when a sudden strong light source causes the driver to feel dizzy or have eye discomfort.

[0004] To achieve the above objectives, this application proposes a method for adjusting light transmittance, the method comprising:

[0005] Detect the light intensity and position of the light source in front of the vehicle;

[0006] Based on the light intensity, determine whether the light source is a strong light source;

[0007] If so, then determine the light source angle based on the light source position;

[0008] When the angle of the light source is less than or equal to a preset first angle, the light transmittance of the vehicle windshield is adjusted by a dimming film according to the angle of the light source and the light intensity.

[0009] Optionally, the step of determining whether the light source is a strong light source based on the light intensity specifically includes:

[0010] The light intensity in front of the vehicle is collected at preset intervals;

[0011] Based on the light intensity, determine the difference in light intensity collected at each adjacent preset time.

[0012] When the difference in light intensity is greater than a preset light intensity, the light source is determined to be a strong light source;

[0013] When the difference in light intensity is less than a preset light intensity, the light source is determined to be a strong light source.

[0014] Optionally, after the step of determining that the light source is not a strong light source when the difference in light intensity is less than a preset light intensity, the method further includes:

[0015] If the light source is not a strong light source, the light transmittance of the vehicle windshield shall be maintained.

[0016] Optionally, if so, the step of determining the light source angle based on the light source position specifically includes:

[0017] Based on the position of the light source and the position of the light sensor, a first straight line is determined between the light source and the light sensor;

[0018] Based on the light sensor and the front of the vehicle, determine a second straight line between the light sensor and the front of the vehicle;

[0019] The angle of the light source is determined based on the first straight line and the second straight line.

[0020] Optionally, the step of adjusting the light transmittance of the vehicle windshield using a dimming film based on the light source angle and the light intensity when the light source angle is less than or equal to a preset first angle specifically includes:

[0021] The dimming film is divided into four quadrants and is located on the windshield on the driver's side of the vehicle.

[0022] When the light source angle is less than or equal to a preset first angle and the light source angle is greater than a preset second angle, the light transmittance of the dimming film corresponding to the quadrant where the strong light source is located is adjusted.

[0023] When the angle of the light source is less than a preset second angle, the transmittance of the dimming film corresponding to the quadrant where the strong light source is located and the dimming film in the adjacent quadrant are adjusted.

[0024] Optionally, after the step of adjusting the light transmittance of the vehicle windshield using a dimming film based on the light source angle and the light intensity when the light source angle is less than or equal to a preset first angle, the method further includes:

[0025] Based on the vehicle radar, the distance between the vehicle and the vehicle in front and behind is obtained respectively;

[0026] When adjusting the light transmittance of the vehicle's windshield, the vehicle speed is adjusted according to the distance between vehicles.

[0027] Furthermore, to achieve the above objectives, this application also proposes a transmittance adjustment device, the device comprising:

[0028] The detection module is used to detect the light intensity and position of the light source in front of the vehicle.

[0029] The judgment module is used to determine whether the light source is a strong light source based on the light intensity.

[0030] An angle module is used to determine the light source angle based on the light source position if the condition is met.

[0031] The adjustment module is used to adjust the light transmittance of the vehicle windshield through a dimming film according to the light source angle and the light intensity when the light source angle is less than or equal to a preset first angle.

[0032] In addition, to achieve the above objectives, this application also proposes a transmittance adjustment device, the device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the transmittance adjustment method.

[0033] In addition, to achieve the above objectives, this application also proposes a storage medium, which is a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the transmittance adjustment method.

[0034] In addition, to achieve the above objectives, this application also proposes a computer program product, which includes a computer program that, when executed by a processor, implements the steps of the transmittance adjustment method.

[0035] One or more technical solutions proposed in this application have at least the following effects:

[0036] This application proposes a method for adjusting light transmittance. The method includes: detecting the illuminance and position of a light source in front of the vehicle; determining whether the light source is a strong light source based on the illuminance; if so, determining the light source angle based on the light source position; and when the light source angle is less than or equal to a preset first angle, adjusting the light transmittance of the vehicle's windshield using a dimming film based on the light source angle and the illuminance. Compared to existing technologies that suffer from overly complex control and inability to handle sudden strong light sources that cause driver dizziness or eye discomfort, this application adjusts the light transmittance of the vehicle's windshield using a dimming film based on the light source angle and illuminance, thereby improving driving safety and comfort. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a flowchart illustrating the first embodiment of the transmittance adjustment method proposed in this application.

[0039] Figure 2This is a flowchart illustrating the second embodiment of the transmittance adjustment method proposed in this application.

[0040] Figure 3 This is a flowchart illustrating the third embodiment of the transmittance adjustment method proposed in this application.

[0041] Figure 4 This is a schematic diagram of the first process of the fourth embodiment of the transmittance adjustment method proposed in this application;

[0042] Figure 5 This is a schematic diagram of the second process of the fourth embodiment of the transmittance adjustment method proposed in this application;

[0043] Figure 6 This is a schematic diagram of the module structure of the transmittance adjustment device according to an embodiment of this application;

[0044] Figure 7 This is a diagram showing the positional relationship between the windshield and the dimming film in this application;

[0045] Figure 8 This is a diagram showing the light source angle in this application.

[0046] Explanation of icon numbers:

[0047] label name label name 10 Detection module 20 Judgment Module 30 Angle module 40 Adjustment module 1 windshield 2 dimming film 3 Light sensor 4 strong light source 2-1 First dimming film 2-2 Second dimming film 2-3 Third dimming film 2-4 Fourth dimming film

[0048] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0049] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of this application and are not intended to limit this application.

[0050] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0051] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0052] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0053] The main solution of this application embodiment is: when the light source angle is less than or equal to a preset first angle, the light transmittance of the vehicle windshield 1 is adjusted by the dimming film 2 according to the light source angle and the light intensity, thereby improving driving safety and driving comfort.

[0054] In this embodiment, for ease of description, the vehicle controller will be used as the execution subject in the following description.

[0055] When a vehicle is in motion, if another vehicle suddenly turns on its high beams, or if the light suddenly brightens when the vehicle emerges from a tunnel, the driver will experience significant eye discomfort and be unable to see clearly what is in front of them. This can easily lead to loss of vehicle control or an accident. Therefore, it is necessary to design a system to address this issue and the vehicle safety problem when the light intensity suddenly increases.

[0056] This application provides a solution: a light transmittance adjustment method. The method includes: detecting the illuminance and position of a light source in front of the vehicle; determining whether the light source is a strong light source 4 based on the illuminance; if so, determining the light source angle based on the light source position; and adjusting the light transmittance of the vehicle's windshield 1 using a dimming film 2 when the light source angle is less than or equal to a preset first angle, based on the light source angle and the illuminance. Compared to existing technologies where control is overly complex and unable to handle sudden strong light sources 4 causing driver dizziness or eye discomfort, this application adjusts the light transmittance of the vehicle's windshield 1 using a dimming film 2 based on the light source angle and illuminance, thereby improving driving safety and comfort.

[0057] Based on this, the present application provides a method for adjusting light transmittance.

[0058] refer to Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the transmittance adjustment method proposed in this application.

[0059] Considering that existing technologies suffer from overly complex control systems and cannot handle vehicle control issues caused by sudden, strong light sources 4 leading to driver dizziness or eye discomfort, a solution is developed to adjust the light transmittance of the vehicle's windshield 1 using a dimming film 2. Figure 1 As shown, the transmittance adjustment method described in this embodiment includes steps S10 to S40:

[0060] Step S10: Detect the light intensity and position of the light source in front of the vehicle.

[0061] It should be noted that the light sensor 3 detects the light intensity of the light source in front of the vehicle. The light sensor 3 is located close to the driver. The light sensor 3 is used to detect the light intensity in front of the vehicle. It is located close to the driver's eyes, so the detection result is closer to the driver's actual field of vision. The specific location of the strong light source 4 is obtained by means of image sensors and other means.

[0062] Step S20: Determine whether the light source is a strong light source 4 based on the light intensity.

[0063] It should be noted that illuminance, also known as illuminance or light intensity, is used to describe the visible light radiation energy received per unit area. It is usually expressed in lux (Lx), which represents the illuminance when the luminous flux received per square meter is 1 lumen.

[0064] It is understandable that the basis for determining whether the light source is a strong light source 4 is that high-intensity light within a certain range in front of the vehicle is a light source that affects the driver's driving.

[0065] Step S30: If so, determine the light source angle based on the light source position.

[0066] It should be noted that the angle between the line connecting the light source position and the light sensor 3 and the straight line from the light sensor 3 to the front of the vehicle is the angle θ of the strong light source 4. The straight line from the light sensor 3 to the front of the vehicle is only affected by the position of the light sensor 3 and is not affected by the position of the strong light source 4.

[0067] Step S40: When the light source angle is less than or equal to a preset first angle, the light transmittance of the vehicle windshield 1 is adjusted by the dimming film 2 according to the light source angle and the light intensity.

[0068] It should be noted that the preset first angle is A0. The driver can adjust the specific value of the preset first angle according to their individual circumstances, and this embodiment does not impose any restrictions. When the included angle θ≤A0, it is determined that the strong light source 4 is within the range that affects the driver's normal driving, and the step of controlling the dimming film 2 is initiated.

[0069] It is understandable that when the angle of the light source is greater than the preset first angle, it is determined that the light from the light source will not affect the driver's driving.

[0070] In a specific implementation, the light intensity and position of the light source in front of the vehicle are detected. Based on the light intensity, it is determined whether the light source is a strong light source 4. If so, the light source angle is determined based on the light source position. When the light source angle is less than or equal to a preset first angle, the light transmittance of the vehicle windshield 1 is adjusted by the dimming film 2 based on the light source angle and the light intensity, thereby improving driving safety and driving comfort.

[0071] Based on the first embodiment of this application, in the second embodiment of this application, the content that is the same as or similar to the first embodiment described above can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 2 , Figure 2 This is a flowchart illustrating the second embodiment of the transmittance adjustment method proposed in this application.

[0072] Considering that the intensity of light from a light source can affect the safe driving of a vehicle driver, in order to determine whether the light source is a strong light source, such as... Figure 2 As shown, step S20 in this embodiment specifically includes:

[0073] Step S21: Collect the light intensity in front of the vehicle at preset time intervals.

[0074] It should be noted that the preset time is T and the light intensity is L. The preset time can be set according to the actual situation, and this embodiment does not impose any restrictions. The collection range is directly in front of the left windshield 1 where the vehicle driver is located, that is, the driver's field of vision observation area while driving.

[0075] Step S22: Determine the difference in light intensity collected at each adjacent preset time based on the light intensity.

[0076] It should be noted that the difference in light intensity collected at each adjacent preset time is the difference between the light intensity collected in the later time and the light intensity collected in the previous time.

[0077] Step S23: When the difference in light intensity is greater than the preset light intensity, the light source is determined to be a strong light source 4.

[0078] It is understood that the preset light intensity includes a first light threshold and a second light threshold. The preset light intensity can be set according to the actual situation, and this embodiment does not impose any restrictions.

[0079] It should be noted that the light intensity L in front of the vehicle is detected at every interval T, and it is determined whether the difference between the light intensity of the next sample and the light intensity of the previous sample is greater than the first light threshold L1, or whether the difference between the light intensity of each sample and the light intensity of the previous sample is greater than the second light threshold L2 within three consecutive intervals T, where L2 < L1. When any of the above conditions are met, it is determined that the vehicle has encountered a strong light source 4 with very high light intensity, or a strong light source 4 that seriously affects the driver's driving.

[0080] Step S24: When the difference in light intensity is less than the preset light intensity, it is determined that the light source is not a strong light source 4.

[0081] In the specific implementation, the light intensity in front of the vehicle is collected at preset time intervals. Based on the light intensity, the difference between the light intensity collected at each adjacent preset time interval is determined. When the difference in light intensity is greater than the preset light intensity, the light source is determined to be a strong light source 4. When the difference in light intensity is less than the preset light intensity, the light source is determined not to be a strong light source 4, thereby improving the accuracy of the strong light source 4 determination.

[0082] Furthermore, after step S24, the method further includes:

[0083] Step S2401: If the light source is not a strong light source 4, then maintain the light transmittance of the vehicle windshield 1.

[0084] It should be noted that maintaining the light transmittance of the vehicle's windshield 1 means adjusting the light transmittance of the dimming film 2 to 100%.

[0085] In practice, the light sensor 3 inside the vehicle detects the presence of a strong light source 4 in real time. When the strong light source 4 disappears or the light source is not a strong light source 4, the light transmittance of the dimming film 2 is adjusted to 100%, that is, the windshield 1 without the dimming film 2 is not used, thereby ensuring the safety of driving the vehicle.

[0086] Based on the second embodiment of this application, in the third embodiment of this application, the content that is the same as or similar to the second embodiment described above can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 3 , Figure 3 This is a flowchart illustrating the third embodiment of the transmittance adjustment method proposed in this application.

[0087] Considering that the location of the strong light source 4 has a significant impact on the driver's safe driving, in order to determine the angle between the light source and the vehicle's light sensor 3, such as... Figure 3 and Figure 8 As shown, step S30 in this embodiment specifically includes:

[0088] Step S31: Determine the first straight line between the light source and the light sensor 3 based on the position of the light source and the position of the light sensor 3.

[0089] Step S32: Determine the second straight line between the light sensor 3 and the front of the vehicle based on the light sensor 3 and the front of the vehicle.

[0090] It should be noted that the angle between the line connecting the light source position and the light sensor 3 and the straight line from the light sensor 3 to the front of the vehicle is the angle θ of the strong light source 4. The straight line from the light sensor 3 to the front of the vehicle is only affected by the position of the light sensor 3 and is not affected by the position of the strong light source 4.

[0091] It is understandable that the above connecting line is the first straight line, and the above straight line is the second straight line.

[0092] Step S33: Determine the light source angle based on the first straight line and the second straight line.

[0093] In a specific implementation, a first straight line between the light source and the light sensor 3 is determined based on the position of the light source and the position of the light sensor 3. A second straight line between the light sensor 3 and the front of the vehicle is determined based on the position of the light sensor 3 and the front of the vehicle. The angle of the light source is determined based on the first straight line and the second straight line, and then the impact of the strong light source 4 on the driver of the vehicle is determined based on the angle of the light source.

[0094] Based on the third embodiment of this application, in the fourth embodiment of this application, the content that is the same as or similar to the third embodiment described above can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 4 , Figure 4 This is a flowchart illustrating the fourth embodiment of the transmittance adjustment method proposed in this application.

[0095] Considering that the intensity of the strong light source 4 may affect the driver's safe driving, and in order to adjust the light transmittance of the vehicle's windshield 1 by means of the dimming film 2 according to the light source angle between the light source and the vehicle's light sensor 3, such as... Figure 4 and Figure 7 As shown, step S40 in this embodiment specifically includes:

[0096] Step S41: Divide the dimming film 2 into four quadrants. The dimming film 2 is located on the windshield 1 on the driver's side of the vehicle.

[0097] It should be noted that four dimming films 2 are installed on the windshield 1, each connected to a corresponding control circuit. Each dimming film 2 can independently adjust its light transmittance. The upper and lower ends of the four dimming films 2 are aligned with the upper and lower ends of the windshield 1, respectively, leaving a circular gap in the center. The diameter of the circular gap is 10-15cm. The purpose of this arrangement is to protect the driver from strong light stimulation by adjusting the light transmittance of the dimming films 2, preventing the driver from being unable to open their eyes or experiencing dizziness, while also allowing the driver to observe the road conditions ahead through the circular gap, avoiding the inability to see nearby objects clearly when driving at night. From the inside of the vehicle facing outwards, the dimming films 2 located on the upper left, upper right, lower left, and lower right of the windshield 1 are respectively the first dimming film 2-1, the second dimming film 2-2, the third dimming film 2-3, and the fourth dimming film 2-4.

[0098] It is understood that the dimming film 2 is a PDLC (Polymer Dispersed Liquid Crystal) film, which is a thin film that can control the light transmittance by adjusting the electric field. The transmittance of the dimming film 2 is set to six levels: 0%, 20%, 40%, 60%, 80%, and 100%, corresponding to levels one, two, three, four, five, and six, respectively. By obtaining the difference in light intensity between two consecutive illuminations and the subsequent illumination intensity, the required transmittance of the dimming film 2 is initially determined. The transmittance of the dimming film 2 can be set according to actual conditions, and this embodiment does not impose any limitations. The dimming film 2 can be a PDLC dimming film, an EC dimming film, or an SPD dimming film; it can be set according to specific circumstances, and this embodiment does not impose any limitations.

[0099] Step S42: When the light source angle is less than or equal to a preset first angle and the light source angle is greater than a preset second angle, adjust the light transmittance of the dimming film 2 corresponding to the quadrant where the strong light source 4 is located;

[0100] It should be noted that the first angle is preset to A0 and the second angle is preset to A1. If A1≤θ≤A0, only the dimming film 2 corresponding to the quadrant where the strong light source 4 is located is adjusted, and the transmittance of the dimming film 2 is set according to the light intensity of the strong light source 4.

[0101] It is understandable that an angle A1 (preset second angle) less than A0 is set. When the angle of the strong light source 4 is judged to satisfy A1≤θ≤A0, it is determined that the light source is in front of the vehicle. However, the angle of the light source is relatively large. Further judgment is made on the quadrant where the strong light source 4 is located, and the transmittance of the corresponding dimming film 2 is adjusted according to the quadrant where the strong light source 4 is located.

[0102] Step S43: When the angle of the light source is less than the preset second angle, adjust the light transmittance of the dimming film 2 corresponding to the quadrant where the strong light source 4 is located and the dimming film 2 in the adjacent quadrant.

[0103] It should be noted that when θ < A1, it is determined that the strong light source 4 is closer to the driver's front and has a greater impact on the driver. In this case, the transmittance of the dimming film 2 in the quadrant where the light source is located, as well as the transmittance of the two adjacent dimming films 2, should be reduced. For example, if the strong light source 4 is determined to be in the quadrant where the first dimming film 2-1 is located, then the transmittance of the first dimming film 2-1, as well as the transmittance of the second dimming film 2-2 and the third dimming film 2-3, need to be adjusted simultaneously. If the strong light source 4 is determined to be in the quadrant where the second dimming film 2-2 is located, then the transmittance of the second dimming film 2-2, as well as the transmittance of the first dimming film 2-1 and the fourth dimming film 2-4, need to be adjusted simultaneously.

[0104] It should be noted that if θ < A1, the transmittance of the light source 4 and the two adjacent dimming films are adjusted. When θ < A1, the transmittance of the dimming film 2 corresponding to the quadrant where the light source 4 is located is selected from one of 0%, 20%, and 40%. Let's assume this transmittance is level X. Of the two dimming films 2 adjacent to this one, the upper one has a transmittance level X+1, and the lower one has a transmittance level X+2. This is because the light at the top is generally stronger and the driver's visibility is better, so a relatively lower transmittance can be used to protect the driver's vision. The light at the bottom is weaker, and the driver's visibility is more likely to be impaired; therefore, the lower dimming film 2 has a higher transmittance to prevent potential hazards.

[0105] Understandably, based on the driver's actual driving experience, a neural network algorithm can be used to self-learn the adjustment of the dimming rate of each dimming film 2 and obtain the optimal adjustment method. For example, after the camera determines that a strong light source 4 has been encountered and the light transmittance of the dimming film 2 has been adjusted, if the driver's eyes are wide open or the head is tilted forward, it is determined that the light transmittance of the dimming film 2 is too low, and the light transmittance of the dimming film 2 is increased. If it is determined that the driver is squinting, or covering their eyes with their hands, or turning their head, it is determined that the light transmittance of the dimming film 2 is too low, and the light transmittance of the dimming film 2 can be increased. Through continuous self-learning by the neural network algorithm, the optimal adjustment method of each dimming film 2 is obtained.

[0106] In a specific implementation, the dimming film 2 is divided into four quadrants. The dimming film 2 is located on the windshield 1 on the driver's side of the vehicle. When the light source angle is less than or equal to a preset first angle and greater than a preset second angle, the light transmittance of the dimming film 2 corresponding to the quadrant where the strong light source 4 is located is adjusted. When the light source angle is less than the preset second angle, the light transmittance of the dimming film 2 corresponding to the quadrant where the strong light source 4 is located and the dimming film 2 of the adjacent quadrant is adjusted, thereby ensuring the safety of vehicle driving.

[0107] Furthermore, considering that there are potential safety hazards in adjusting the light transmittance of the vehicle windshield through the dimming film 2 during vehicle driving, and in order to adjust the driving speed of the vehicle according to the distances between the vehicle and the vehicle in front and behind, after the step S40, the following steps are further included:

[0108] Step S401: Obtain the distances between the vehicle and the vehicle in front and behind respectively according to the vehicle radar.

[0109] It should be noted that the vehicle radar can be an ultrasonic radar, a millimeter-wave radar, or a lidar, and can be set according to specific situations, which is not limited in this embodiment.

[0110] Step S402: When adjusting the light transmittance of the vehicle windshield 1, adjust the vehicle speed according to the distance.

[0111] It should be noted that when the vehicle adjusts the light transmittance, the front radar and rear radar of the vehicle are turned on, and the distance L1 between the vehicle and the vehicle in front, the distance L2 between the vehicle and the vehicle behind, and the vehicle speed V of the vehicle are judged. If L1 < L2, the vehicle is controlled to decelerate, and the vehicle speed is gradually decreased at a speed of 3%V per second. It is judged every 2 s whether the strong light source 4 still exists. If it still exists, the deceleration is maintained until the vehicle speed is reduced by a total of △V = (L2 - L1) / (L1 + L2), and then the vehicle speed is maintained for operation; if L1 > L2, the vehicle is controlled to accelerate, and the vehicle speed is gradually increased at a speed of 3%V per second. It is judged every 2 s whether the strong light source 4 still exists. If it still exists, the acceleration is maintained until the vehicle speed is reduced by a total of △V = (L1 - L2) / (L1 + L2), and then the vehicle speed is maintained for operation.

[0112] In a specific implementation, the distances between the vehicle and the vehicle in front and behind are respectively obtained according to the vehicle radar. When adjusting the light transmittance of the vehicle windshield 1, the vehicle speed is adjusted according to the distance, thereby ensuring the safety of vehicle driving.

[0113] In addition, to achieve the above object, as Figure 6 shown, the present application also proposes a light transmittance adjustment device, and the device includes:

[0114] A detection module 10, configured to detect the illumination intensity and the position of the light source in front of the vehicle;

[0115] The judgment module 20 is used to determine whether the light source is a strong light source 4 based on the light intensity.

[0116] Angle module 30 is used to determine the light source angle based on the light source position if the light source is located.

[0117] The adjustment module 40 is used to adjust the light transmittance of the vehicle windshield 1 by means of the dimming film 2, based on the light source angle and the light intensity, when the light source angle is less than or equal to a preset first angle.

[0118] In addition, to achieve the above objectives, this application also proposes a transmittance adjustment device, the device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the transmittance adjustment method.

[0119] In addition, to achieve the above objectives, this application also proposes a storage medium, which is a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the transmittance adjustment method.

[0120] In addition, to achieve the above objectives, this application also proposes a computer program product, which includes a computer program that, when executed by a processor, implements the steps of the transmittance adjustment method.

[0121] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A light transmittance adjusting method characterized by, The light transmittance adjusting method comprises: detecting the light intensity and the light source position of a light source in front of the vehicle; judging whether the light source is a strong light source according to the light intensity; if yes, determining the light source angle according to the light source position; when the light source angle is less than or equal to a preset first angle, adjusting the light transmittance of the vehicle windshield through the light adjusting film according to the light source angle and the light intensity; the step of determining the light source angle according to the light source position specifically comprises: determining a first straight line between the light source and the light ray sensor according to the light source position and the position of the light ray sensor; determining a second straight line between the light ray sensor and the front of the vehicle according to the light ray sensor and the front of the vehicle; determining the light source angle according to the first straight line and the second straight line; the step of adjusting the light transmittance of the vehicle windshield through the light adjusting film according to the light source angle and the light intensity when the light source angle is less than or equal to a preset first angle specifically comprises: dividing the light adjusting film into four quadrants, the light adjusting film being located on the windshield on the driver side of the vehicle; when the light source angle is less than or equal to a preset first angle and greater than a preset second angle, adjusting the light transmittance of the light adjusting film corresponding to the quadrant where the strong light source is located; when the light source angle is less than a preset second angle, adjusting the light transmittance of the light adjusting film corresponding to the quadrant where the strong light source is located and the light adjusting film of the adjacent quadrant; wherein the level of the light transmittance of the light adjusting film below is greater than the level of the light transmittance of the light adjusting film above, and the level of the light transmittance of the light adjusting film above is greater than the level of the light transmittance of the light adjusting film corresponding to the quadrant where the strong light source is located.

2. The light transmittance adjusting method according to claim 1, wherein the step of judging whether the light source is a strong light source according to the light intensity specifically comprises: collecting the light intensity in front of the vehicle every preset time; determining the difference of the light intensity collected at each adjacent preset time according to the light intensity; when the difference of the light intensity is greater than a preset light intensity, determining that the light source is a strong light source; when the difference of the light intensity is less than a preset light intensity, determining that the light source is not a strong light source.

3. The light transmittance adjusting method according to claim 2, wherein after the step of determining that the light source is not a strong light source when the difference of the light intensity is less than a preset light intensity, the method further comprises: if the light source is not a strong light source, maintaining the light transmittance of the vehicle windshield.

4. The light transmittance adjusting method according to claim 1, wherein after the step of adjusting the light transmittance of the vehicle windshield through the light adjusting film according to the light source angle and the light intensity when the light source angle is less than or equal to a preset first angle, the method further comprises: respectively acquiring the vehicle distance between the vehicle and the front vehicle and the rear vehicle according to the vehicle radar; when adjusting the light transmittance of the vehicle windshield, adjusting the vehicle speed of the vehicle according to the vehicle distance.

5. A light transmittance adjusting device, characterized by, the device comprises: a detection module for detecting the light intensity and the light source position of a light source in front of the vehicle; a judgment module for judging whether the light source is a strong light source according to the light intensity; an angle module for determining the light source angle according to the light source position if yes; The adjusting module is configured to adjust the light transmittance of the light-adjusting film according to the light source angle and the light intensity when the light source angle is less than or equal to a preset first angle. The angle module is further configured to determine a first straight line between the light source and the light sensor according to the position of the light source and the position of the light sensor, determine a second straight line between the light sensor and the front of the vehicle according to the light sensor and the front of the vehicle, and determine the light source angle according to the first straight line and the second straight line. The adjusting module is further configured to divide the light-adjusting film into four quadrants, the light-adjusting film being located on the windshield on the driver side of the vehicle, adjust the light transmittance of the light-adjusting film in the quadrant where the strong light source is located when the light source angle is less than or equal to a preset first angle and greater than a preset second angle, and adjust the light transmittance of the light-adjusting film in the quadrant where the strong light source is located and the light-adjusting film in the adjacent quadrant when the light source angle is less than the preset second angle, wherein the level of the light transmittance of the light-adjusting film below is greater than the level of the light transmittance of the light-adjusting film above, and the level of the light transmittance of the light-adjusting film above is greater than the level of the light transmittance of the light-adjusting film in the quadrant where the strong light source is located.

6. A light transmittance adjusting apparatus characterized by comprising: The device comprises a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program being configured to implement the steps of the light transmittance adjusting method according to any one of claims 1 to 4.

7. A storage medium, characterized by The storage medium is a computer readable storage medium, and the storage medium stores a computer program, the computer program being executable by the processor to implement the steps of the light transmittance adjusting method according to any one of claims 1 to 4.

8. A computer program product, characterised in that, The computer program product comprises a computer program, the computer program being executable by the processor to implement the steps of the light transmittance adjusting method according to any one of claims 1 to 4.

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