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

Abstract

The invention discloses a light transmittance adjusting method and device, equipment, a storage medium and a product, and relates to the technical field of vehicle control, and the method comprises the steps: detecting the illumination intensity and the light source position of a light source in front of a vehicle, judging whether the light source is a strong light source according to the illumination intensity, if yes, determining the light source angle according to the light source position, and if not, adjusting the light transmittance. And when the light source angle is smaller than or equal to a preset first angle, the light transmittance of the vehicle windshield is adjusted through a light adjusting film according to the light source angle and the illumination intensity. Compared with the vehicle control problems in the prior art that the control is too complex, and the sudden strong light source cannot be dealt with the dizziness of the driver or the uncomfortable eyes, the light transmittance of the vehicle windshield is adjusted through the dimming film according to the light source angle and the illumination intensity, so that the light transmittance of the vehicle windshield can be adjusted. Therefore, the driving safety and the driving comfort are improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a transmittance adjustment method, device, equipment, storage medium and product. Background Art

[0002] During driving, if the vehicle suddenly encounters an oncoming vehicle turning on its high beam, or the light suddenly becomes brighter when the vehicle comes out of a tunnel, the driver will experience obvious eye discomfort and will not be able to see clearly what is ahead, which can easily cause the vehicle to lose control or cause an accident. Therefore, it is necessary to design for vehicle safety issues when the light intensity suddenly increases. Summary of the invention

[0003] The main purpose of this application is to provide a transmittance adjustment method, device, equipment, storage medium and product, aiming to solve the technical problems in the prior art that the control is too complicated and cannot cope with the sudden appearance of strong light sources that cause dizziness or eye discomfort to the driver.

[0004] To achieve the above object, the present application proposes a light transmittance adjustment method, which comprises:

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

[0006] According to the light intensity, determining whether the light source is a strong light source;

[0007] If yes, determining the light source angle according to the light source position;

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

[0009] Optionally, the step of judging whether the light source is a strong light source according to the light intensity specifically includes:

[0010] Collect the light intensity in front of the vehicle at preset intervals;

[0011] According to the light intensity, determining the difference in light intensity collected at each adjacent preset time;

[0012] When the difference in the light intensity is greater than a preset light intensity, determining that the light source is a strong light source;

[0013] When the difference in the light intensity is less than the preset light intensity, it is determined that the light source is not 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 the 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 is maintained.

[0016] Optionally, if yes, the step of determining the light source angle according to the light source position specifically includes:

[0017] Determining 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;

[0018] 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;

[0019] The light source angle is determined according to the first straight line and the second straight line.

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

[0021] Dividing the dimming film into four quadrants, the dimming film 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, adjusting the light transmittance of the dimming film corresponding to the quadrant where the strong light source is located;

[0023] When the light source angle is smaller 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 through the 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, the method further includes:

[0025] According to the vehicle radar, the distance between the vehicle and the front vehicle and the rear vehicle is obtained respectively;

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

[0027] In addition, to achieve the above-mentioned purpose, the present application also proposes a light transmittance adjustment device, the device comprising:

[0028] A detection module, used to detect the light intensity and position of the light source in front of the vehicle;

[0029] A judging module, used for judging whether the light source is a strong light source according to the light intensity;

[0030] An angle module, used for determining the light source angle according to the light source position;

[0031] The adjustment module is used to adjust the light transmittance of the vehicle windshield through the 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-mentioned purpose, the present application also proposes a transmittance adjustment device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, and the computer program is configured to implement the steps of the transmittance adjustment method.

[0033] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the transmittance adjustment method are implemented.

[0034] In addition, to achieve the above-mentioned purpose, the present application also proposes a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the transmittance adjustment method are implemented.

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

[0036] The present application proposes a method for adjusting light transmittance, which includes: 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, and if so, determining the light source angle according to the light source position, and adjusting 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. Compared with the prior art, which has too complicated control and cannot cope with the vehicle control problem when the driver suffers from dizziness or eye discomfort caused by a sudden strong light source, the present 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 driving safety and driving comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0038] Figure 1 A schematic diagram of the flow chart of the first embodiment of the light transmittance adjustment method proposed in the embodiments of the present application;

[0039] Figure 2A schematic diagram of the flow chart of the second embodiment of the light transmittance adjustment method proposed in the embodiment of the present application;

[0040] Figure 3 A schematic diagram of a flow chart of a third embodiment of the light transmittance adjustment method proposed in the present application;

[0041] Figure 4 A first flow chart of a fourth embodiment of the light transmittance adjustment method proposed in the present application;

[0042] Figure 5 A second flow chart of a fourth embodiment of the light transmittance adjustment method proposed in the present application;

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

[0044] Figure 7 A diagram showing the position relationship between the windshield and the dimming film in this application;

[0045] Figure 8 This is the light source angle diagram of this application.

[0046] Description of Figure Numbers:

[0047] Label name Label name 10 Detection module 20 Judgment module 30 Angular Module 40 Adjustment module 1 windshield 2 Smart Film 3 Light sensor 4 Strong light source 2-1 The first dimming film 2-2 Second dimming film 2-3 The third dimming film 2-4 Fourth dimming film

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

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

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0052] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0053] The main solution of the embodiment of the present application is: when the light source angle is less than or equal to the preset first angle, the 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 the embodiment, for ease of description, the following description is made with the vehicle controller as the execution subject.

[0055] During driving, if the vehicle suddenly encounters an oncoming vehicle turning on its high beam, or the light suddenly becomes brighter when the vehicle comes out of a tunnel, the driver will experience obvious eye discomfort and will not be able to see clearly what is ahead, which can easily cause the vehicle to lose control or cause an accident. Therefore, it is necessary to design for this problem and for vehicle safety issues when the light intensity suddenly increases.

[0056] The present application provides a solution, and proposes a light transmittance adjustment method, which includes: 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 4 according to the light intensity, and if so, 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 1 through the dimming film 2 according to the light source angle and the light intensity. Compared with the prior art, which has too complicated control and cannot cope with the vehicle control problem when the driver is dizzy or has eye discomfort due to the sudden strong light source 4, the present application adjusts the light transmittance of the vehicle windshield 1 through the dimming film 2 according to the light source angle and the light intensity, thereby improving driving safety and driving comfort.

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

[0058] refer to Figure 1 , Figure 1 This is a schematic flow chart of the first embodiment of the transmittance adjustment method proposed in the embodiments of the present application.

[0059] Considering that the control in the prior art is too complicated and cannot cope with the vehicle control problem when the driver is dizzy or has eye discomfort due to the sudden strong light source 4, in order to adjust the light transmittance of the vehicle windshield 1 through the dimming film 2, such as Figure 1 As shown, the light 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 intensity of the light source in front of the vehicle is detected by the light sensor 3, and the light sensor 3 is arranged near the driver. The light sensor 3 is used to detect the light intensity in front and is arranged close to the driver's eyes, so that the detection result is closer to the driver's actual field of view, and the specific position of the strong light source 4 is obtained by image sensors and other means.

[0062] Step S20: judging whether the light source is a strong light source 4 according to the light intensity.

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

[0064] It can be understood that the basis for judging 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 yes, determine the light source angle according to the light source position.

[0066] It should be noted that the angle between the connecting line through 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, wherein 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 through 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, and the driver can adjust the specific value of the preset first angle according to personal circumstances, which is not limited in this embodiment. When the angle θ≤A0, it is determined that the strong light source 4 is within the range of affecting the driver's normal driving, and the step of controlling the dimming film 2 is entered.

[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 of the light source will not affect the driver's driving.

[0070] In a specific implementation, the light intensity and light source position of the light source in front of the vehicle are detected, and 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 transmittance of the vehicle windshield 1 is adjusted through 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 the present application, in the second embodiment of the present application, the same or similar contents as those in the first embodiment can refer to the above introduction, and will not be repeated in the following. Figure 2 , Figure 2 This is a flow chart of the second embodiment of the transmittance adjustment method proposed in the embodiment of the present application.

[0072] Considering that the light intensity of the light source will affect the safe driving of the vehicle driver, in order to determine whether the light source is a strong light source 4, such as Figure 2 As shown, step S20 in this embodiment specifically includes:

[0073] Step S21: collecting 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 actual conditions, and this embodiment does not limit it. The collection range is directly in front of the left windshield 1 where the vehicle driver is located, that is, the field of vision observation area of ​​the vehicle driver when driving.

[0075] Step S22: determining the difference between the light intensities collected at adjacent preset time periods according to the light intensities.

[0076] It should be noted that the difference between the light intensities collected at adjacent preset time periods is the difference between the light intensity collected at the latter time and the light intensity collected at the previous time.

[0077] Step S23: when the difference in illumination intensity is greater than a preset illumination intensity, determining that the light source is a strong light source 4.

[0078] It can be 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 actual conditions, and this embodiment does not limit this.

[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 collected last time and the light intensity collected last time is greater than the first light threshold L1, or within three consecutive intervals T, the difference between the light intensity collected each time and the light intensity collected last time is greater than the second light threshold L2, where L2<L1. When any of the above conditions is 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 the illumination intensity is less than the preset illumination intensity, it is determined that the light source is not a strong light source 4.

[0081] In a specific implementation, the light intensity in front of the vehicle is collected at preset time intervals, and the difference in light intensity collected at each adjacent preset time is determined based on the light intensity. 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 to be not a strong light source 4, thereby improving the accuracy of the judgment of the strong light source 4.

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

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

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

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

[0086] Based on the second embodiment of the present application, in the third embodiment of the present application, the same or similar contents as those of the second embodiment can be referred to the above introduction, and will not be repeated in the following. Figure 3 , Figure 3 This is a flow chart of the third embodiment of the transmittance adjustment method proposed in the embodiments of the present application.

[0087] Considering that the position of the strong light source 4 will have an important impact on the safe driving of the vehicle driver, in order to determine the light source angle between the light source and the light sensor 3 of the vehicle, such as Figure 3 and Figure 8 As shown, step S30 in this embodiment specifically includes:

[0088] Step S31 : determining a first straight line between the light source and the light sensor 3 according to the position of the light source and the position of the light sensor 3 .

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

[0090] It should be noted that the angle between the connecting line through 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, wherein 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 can be understood that the connecting line is the first straight line, and the straight line is the second straight line.

[0092] Step S33: determining the light source angle according to 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 light sensor 3 and the front of the vehicle, an angle of the light source is determined based on the first straight line and the second straight line, and then an impact of the strong light source 4 on the vehicle driver is determined based on the angle of the light source.

[0094] Based on the third embodiment of the present application, in the fourth embodiment of the present application, the same or similar contents as those in the third embodiment can refer to the above introduction, and will not be repeated in the following. Figure 4 , Figure 4 This is a flow chart of the fourth embodiment of the light transmittance adjustment method proposed in the embodiments of the present application.

[0095] Considering that the light intensity of the strong light source 4 will affect the safe driving of the vehicle driver, in order to adjust the light transmittance of the vehicle windshield 1 through the dimming film 2 according to the light source angle between the light source and the light sensor 3 of the vehicle, as shown in FIG. 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, and the dimming film 2 is located on the windshield 1 on the driver's side of the vehicle;

[0097] It should be noted that a dimming film 2 is arranged on the windshield 1. There are four dimming films 2, which are connected to corresponding control circuits respectively. Each dimming film 2 can adjust the light transmittance independently. The upper and lower ends of the four dimming films 2 are aligned with the upper and lower ends of the windshield 1 respectively, and a circular gap is left in the center. The diameter of the circular part is 10-15 cm. The purpose of this arrangement is to ensure that when the driver is stimulated by strong light, the light transmittance of the dimming film 2 is adjusted to protect the driver, preventing the driver from being unable to open his eyes or getting dizzy, and the road conditions in front can be observed through the circular gap in front, avoiding the inability to see nearby objects clearly when driving at night. From the inside of the car to the outside of the car, the dimming films 2 arranged 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 can be understood that the dimming film 2 is a PDLC (Polymer Dispersed Liquid Crystal) film, that is, a polymer dispersed liquid crystal film. The dimming film 2 is a thin film that can control the transmittance of light by adjusting the electric field. The transmittance of the dimming film 2 is set to 6 levels, namely 0%, 20%, 40%, 60%, 80%, and 100%, that is, the transmittance is the first, second, third, fourth, fifth, and sixth levels respectively. The difference in light intensity before and after and the light intensity of the latter time are obtained to preliminarily determine the transmittance of the dimming film 2 that needs to be adjusted. The transmittance of the dimming film 2 can be set according to actual conditions, and this embodiment does not limit it. The dimming film 2 can use a PDLC dimming film, an EC dimming film, or an SPD dimming film. It can be set according to the specific situation, and this embodiment does not limit it.

[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, adjusting 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 as A0, and the second angle is preset as 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 can be understood that an angle A1 (preset second angle) smaller than A0 is set. When the angle of the strong light source 4 is judged to satisfy A1≤θ≤A0, it is judged that the light source is in front of the vehicle, but the angle of the light source is large. The quadrant where the strong light source 4 is located is further judged, 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 light source angle is less than a preset second angle, adjusting 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 is satisfied, it is judged that the strong light source 4 is closer to the front of the driver and has a greater impact on the driver. At this time, the transmittance of the dimming film 2 in the quadrant where the light source is located and the transmittance of the two adjacent dimming films 2 are reduced. For example, at this time, if it is judged that the strong light source 4 is in the quadrant where the first dimming film 2-1 is located, it is necessary to adjust the transmittance of the first dimming film 2-1 and the transmittance of the second dimming film 2-2 and the third dimming film 2-3 at the same time. If it is judged that the strong light source 4 is in the quadrant where the second dimming film 2-2 is located, it is necessary to adjust the transmittance of the second dimming film 2-2 and the transmittance of the first dimming film 2-1 and the fourth dimming film 2-4 at the same time.

[0104] It should be noted that if θ<A1, the transmittance of the light source where the strong light source 4 is located and the two adjacent dimming films are adjusted. When θ<A1, the transmittance of the dimming film 2 corresponding to the quadrant where the strong light source 4 is located is selected as one of 0%, 20%, and 40%. Assuming that the transmittance at this time is level X, and of the two dimming films 2 adjacent to this dimming film 2, the transmittance of the upper dimming film 2 is selected as level X+1, and the transmittance of the lower dimming film 2 is selected as level X+2. The purpose of doing this is that the light on the upper side is generally relatively strong, and the driver's vision is better, so a relatively low transmittance can be used to protect the driver's vision, while the light on the lower side is weaker, and it is more likely for the driver to have unclear vision, so the transmittance of the dimming film 2 on the lower side is higher to prevent danger.

[0105] It is understandable that according to the actual driving process of the driver, the neural network algorithm can be used to self-learn the adjustment of the dimming rate of each dimming film 2 and obtain the best adjustment method. For example, after the camera device determines that the transmittance of the dimming film 2 has been adjusted after encountering a strong light source 4, the driver's head image, if the driver's eyes are wide open or the head is tilted forward at this time, it is judged that the transmittance of the dimming film 2 is too small at this time, and the transmittance of the dimming film 2 is increased. If it is judged that the driver squints, or covers his eyes with his hands, or turns his head, etc., it is judged that the transmittance of the dimming film 2 is too small at this time, and the 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 1 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 the vehicle behind, after the step S40, the following steps are further included:

[0108] Step S401: According to the vehicle radar, respectively obtain the distances between the vehicle and the vehicle in front and the vehicle behind.

[0109] It should be noted that the vehicle radar can be an ultrasonic radar, a millimeter-wave radar, or a lidar, which can be set according to specific situations and 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 total vehicle speed reduction is △V = (L2 - L1) / (L1 + L2), and then the vehicle speed is maintained; 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 total vehicle speed reduction is △V = (L1 - L2) / (L1 + L2), and then the vehicle speed is maintained.

[0112] In a specific implementation, according to the vehicle radar, the distances between the vehicle and the vehicle in front and the vehicle behind are respectively obtained. 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 light intensity and the light source position of the light source in front of the vehicle;

[0115] A judging module 20, used to judge whether the light source is a strong light source 4 according to the light intensity;

[0116] An angle module 30, for determining the light source angle according to the light source position;

[0117] The adjustment module 40 is used to adjust the light transmittance of the vehicle windshield 1 through the dimming film 2 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.

[0118] In addition, to achieve the above-mentioned purpose, the present application also proposes a transmittance adjustment device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, and the computer program is configured to implement the steps of the transmittance adjustment method.

[0119] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the transmittance adjustment method are implemented.

[0120] In addition, to achieve the above-mentioned purpose, the present application also proposes a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the transmittance adjustment method are implemented.

[0121] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for adjusting light transmittance, characterized in that: The light transmittance adjustment method comprises: Detect the light intensity and position of the light source in front of the vehicle; According to the light intensity, determining whether the light source is a strong light source; 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, the light transmittance of the vehicle windshield is adjusted by the dimming film according to the light source angle and the light intensity.

2. The light transmittance adjustment method according to claim 1, characterized in that: The step of judging whether the light source is a strong light source according to the light intensity specifically includes: Collect the light intensity in front of the vehicle at preset intervals; According to the light intensity, determining the difference in light intensity collected at each adjacent preset time; When the difference in the light intensity is greater than a preset light intensity, determining that the light source is a strong light source; When the difference in the light intensity is less than the preset light intensity, it is determined that the light source is not a strong light source.

3. The light transmittance adjustment method according to claim 2, characterized in that: After the step of determining that the light source is not a strong light source when the difference in the light intensity is less than the preset light intensity, the method further includes: If the light source is not a strong light source, the light transmittance of the vehicle windshield is maintained.

4. The light transmittance adjustment method according to claim 1, characterized in that: If so, the step of determining the light source angle according to the light source position specifically includes: Determining 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; The light source angle is determined according to the first straight line and the second straight line.

5. The light transmittance adjustment method according to claim 1, wherein: The step of adjusting the light transmittance of the vehicle windshield through the dimming film according to the light source angle and the light intensity when the light source angle is less than or equal to the preset first angle specifically includes: Dividing the dimming film into four quadrants, the dimming film is located on the windshield on the driver's side of the vehicle; 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, adjusting the light transmittance of the dimming film corresponding to the quadrant where the strong light source is located; When the light source angle is smaller 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.

6. The light transmittance adjustment method according to claim 1, wherein: After the step of adjusting the light transmittance of the vehicle windshield through the dimming film according to the light source angle and the light intensity when the light source angle is less than or equal to the preset first angle, the method further includes: According to the vehicle radar, the distance between the vehicle and the front vehicle and the rear vehicle is obtained respectively; When adjusting the light transmittance of the vehicle windshield, the vehicle speed is adjusted according to the vehicle distance.

7. A light transmittance adjustment device, characterized in that: The device comprises: A detection module, used to detect the light intensity and position of the light source in front of the vehicle; A judging module, used for judging whether the light source is a strong light source according to the light intensity; An angle module, used for determining the light source angle according to the light source position; The adjustment module is used to adjust the light transmittance of the vehicle windshield through the 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.

8. A light transmittance adjustment device, characterized in that: The device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the light transmittance adjustment method according to any one of claims 1 to 6.

9. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the light transmittance adjustment method according to any one of claims 1 to 6 are implemented.

10. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of the light transmittance adjustment method according to any one of claims 1 to 6 are implemented.

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