Anti-dizziness system for dynamically adjusting polarization direction of front windshield based on optical induction

Abstract

The invention discloses an anti-dizziness system for dynamically adjusting the polarization direction of a front windshield based on optical induction, and relates to the field of vehicle dizziness prevention, and the anti-dizziness system comprises an optical sensor which is used for capturing the polarization characteristics of incident light in real time; the polarization characteristics comprise a polarization direction, a polarization degree and a spectral wavelength; the vehicle-mounted control unit is used for judging polarization glare which has the largest influence on driving according to the polarization characteristics captured by the optical sensor and calculating a target polarization direction perpendicular to the polarization direction of the polarization glare; the vehicle-mounted control unit judges and calculates a target polarization direction perpendicular to the polarization direction of the polarization glare based on the polarization glare which has the greatest influence on driving, and generates an instruction for filtering the polarization glare and retaining safe light; and the adjustable polarization glass is used for adjusting the polarization light transmission direction of the adjustable polarization glass to a target polarization direction in real time according to an instruction of the vehicle-mounted control unit so as to filter the selected polarization glare and keep other non-polarized light rays as safe light rays.

Description

Technical Field

[0001] This application relates to the field of vehicle anti-glare, and more particularly to an anti-glare system based on optical sensing for dynamically adjusting the polarization direction of a windshield, an anti-glare method based on optical sensing for dynamically adjusting the polarization direction of a windshield, electronic devices, storage media, and vehicle cabins. Background Technology

[0002] With the continuous increase in car ownership, traffic safety issues are becoming increasingly prominent. Especially when driving at night, through tunnels, or in extreme weather, the wave nature of light can cause interference and diffraction, resulting in limited vision and glare. The driver's visual interference can be directly transmitted to driving actions, forming a chain of errors in "perception-judgment-operation".

[0003] Judgment delay and decision bias: Under blurred vision, the driver's judgment error in judging vehicle speed and distance will increase by 2-3 times; reaction time to sudden situations will be prolonged: the normal reaction time is about 0.5-1 second, which may be extended to 1.5-2 seconds under glare interference (equivalent to traveling an extra 25-33 meters at a speed of 60km / h).

[0004] Increased probability of operational errors: Subconscious avoidance actions are prone to loss of control: For example, when suddenly encountering oncoming bright light, the driver may instinctively swerve or brake suddenly, causing the vehicle to skid (the risk is even higher on wet roads) or rear-end collisions; Decreased operational coordination: The accuracy of fine operations such as shifting gears and turning on the defroster function is reduced. For example, when there is glare in the rain, the driver may accidentally press the high-speed wiper instead of switching to low beam.

[0005] Excessive consumption of attention: In order to combat glare, drivers need to keep their visual nerves constantly tense (such as squinting and blinking frequently), which causes their attention to shift from "observing road conditions" to "combating discomfort", resulting in a decrease in sensitivity to the surrounding environment (such as non-motorized vehicles and pedestrians on the right) by more than 40%.

[0006] Anti-glare technology for driving vehicles covers core scenarios of vision systems and lighting interaction, with pain points concentrated on dynamic response, environmental adaptation, and cost balance. Among them, anti-glare technology for vision systems mainly focuses on anti-glare treatment of rearview mirrors, side windows, and rear windows, but cannot solve the glare caused by polarized light from the front; anti-glare technology for lighting interaction systems is used to adjust the vehicle's own lights to reduce the impact on other people, but cannot solve the problem of limited vision for the driver. Summary of the Invention

[0007] The purpose of this invention is to provide an anti-glare system based on optical sensing for dynamically adjusting the polarization direction of a windshield, an anti-glare method based on optical sensing for dynamically adjusting the polarization direction of a windshield, an electronic device, a storage medium, and a vehicle cabin, thereby solving at least one of a number of technical problems.

[0008] 1. Limitations of adaptability of traditional fixed polarization technology

[0009] Traditional polarizing glass or polarizers have a fixed transmission direction (such as filtering only horizontally polarized light), which cannot cope with dynamically changing glare. For example, the polarization direction of road surface reflections in rainy weather shifts due to changes in the sun's angle, and the reflected light from oncoming headlights becomes obliquely polarized due to vehicle movement. A fixed polarization direction is difficult to continuously filter, and glare interference still exists.

[0010] 2. Insufficient accuracy of glare detection

[0011] Traditional light sensors can only detect light brightness and cannot distinguish between "glaring polarized glare" and "normal ambient light" (e.g., they cannot identify high-brightness but non-polarized safety light), which may lead to over-filtering (e.g., obscuring traffic lights) or under-filtering (e.g., missing obliquely polarized headlight glare).

[0012] 3. Adjustment lag and error under complex environments

[0013] Existing anti-glare technologies (such as manually adjustable polarizing filters and fixed coatings) cannot respond to changes in road conditions in real time: for example, sudden changes in the polarization characteristics of strong light at tunnel entrances and exits, and glare scattering caused by glass water film in rainy weather. Traditional solutions are prone to anti-glare failure or excessively dark vision due to a lack of dynamic perception and rapid adjustment capabilities.

[0014] 4. The challenge of balancing anti-glare and visual clarity

[0015] Traditional solutions often reduce glare by lowering overall light transmittance, but this may simultaneously block useful light (such as brake lights from vehicles ahead or reflections from road signs). This invention, however, uses an optical sensor to identify the characteristics of polarized glare, selectively filtering out glaring components while retaining unpolarized, safe light, thus preventing the loss of visual information.

[0016] This invention provides the following solution:

[0017] According to a first aspect of the present invention, an anti-glare system based on optical sensing for dynamically adjusting the polarization direction of a windshield is provided, comprising: an optical sensor, an on-board control unit, and adjustable polarization glass;

[0018] Optical sensors used to capture the polarization characteristics of incident light in real time;

[0019] Polarization characteristics include polarization direction, degree of polarization, and spectral wavelength;

[0020] The vehicle control unit is used to determine the polarized glare that has the greatest impact on driving based on the polarization characteristics captured by the optical sensor, and to calculate the target polarization direction that is perpendicular to the polarization direction of the polarized glare.

[0021] The vehicle control unit generates instructions to filter polarized glare and retain safe light based on the judgment of polarized glare that has the greatest impact on driving and the calculation of the target polarization direction perpendicular to the polarization direction of the polarized glare.

[0022] Adjustable polarized glass is used to adjust its polarization transmission direction to the target polarization direction in real time according to the instructions of the vehicle control unit, so as to filter the selected polarized glare and retain other unpolarized light as safe light.

[0023] The optical sensor is installed inside the vehicle's windshield.

[0024] Adjustable polarized glass, installed on the vehicle's windshield;

[0025] The vehicle control unit is connected to the optical sensor and the adjustable polarization glass signal, respectively.

[0026] Furthermore, it also includes:

[0027] Optical sensors determine the polarization direction of incident light through polarization spectral analysis, including a recognition range covering 0°-360° with 0° as the horizontal reference.

[0028] Degree of polarization is used to determine the proportion of polarized light in glare;

[0029] Spectral wavelengths are used to distinguish between harmful glare and necessary light, with filtering blue light in the visible light spectrum taking precedence over filtering red and green light.

[0030] Furthermore, it also includes:

[0031] The glare detection function of the vehicle control unit includes:

[0032] Daytime and nighttime scenes are divided by light intensity and illumination angle. During the day, horizontally polarized reflections from the road surface are filtered out first, while at night, polarized light reflected from oncoming vehicle headlights is filtered out first.

[0033] The vehicle control unit is also equipped with an environmental error compensation algorithm to correct detection errors in complex environments such as rainy days and tunnel entrances and exits.

[0034] Among these measures, the detection error is corrected to ensure that the degree of glare reduction does not exceed a preset glare reduction threshold.

[0035] Furthermore, it also includes:

[0036] Adjustable polarizing glass, employing a liquid crystal polarizing film structure;

[0037] The liquid crystal polarizing film structure includes a liquid crystal layer embedded in a glass interlayer. Based on adjusting the voltage applied to the liquid crystal layer by the vehicle control unit, the alignment direction of the liquid crystal molecules is changed, and the polarization transmission direction can be continuously adjusted from 0° to 360° through continuous adjustment of the voltage.

[0038] Among them, adjustable polarized glass is selected based on a preset response speed threshold and used for the windshield.

[0039] Furthermore, it also includes:

[0040] Tunable polarized glass, employing electrochromic materials and a polarized glass structure;

[0041] Among them, by combining electrochromic materials with polarization structures, the polarization characteristics of the materials are changed by voltage to adapt to the ground temperature changes in vehicle usage scenarios;

[0042] Among them, the polarization transmission direction adjustment range is controlled between 0° and 90° based on the ground temperature change.

[0043] Furthermore, it also includes:

[0044] When calculating the target polarization direction to achieve the anti-glare effect, the vehicle control unit prioritizes ensuring the brightness of the field of view.

[0045] This includes filtering polarized glare while retaining unpolarized ambient light;

[0046] The preset field-of-view brightness threshold is 85%.

[0047] Based on a preset field of view brightness threshold, ensure that the field of view brightness includes a retained field of view brightness ratio greater than or equal to 85% of the field of view brightness before the anti-glare effect is achieved.

[0048] Furthermore, it also includes:

[0049] An optical sensor is installed inside the vehicle's windshield.

[0050] Among them, it is installed near the rearview mirror inside the vehicle and close to the windshield;

[0051] Among them, adjustable polarized glass is selected based on a preset response speed threshold, with a response speed threshold of 50ms;

[0052] The adjustment response speed of adjustable polarizing glass includes an adjustment response speed of ≤50ms.

[0053] Furthermore, it also includes:

[0054] The polarization direction calculation function of the vehicle control unit is configured as follows:

[0055] When the glare polarization direction is detected to be 0°, the adjustable polarizing glass is controlled to adjust the polarization transmission direction to 90°.

[0056] Furthermore, it also includes:

[0057] Optical sensors correct detection errors by comparing multiple frames of data;

[0058] This includes capturing the polarization characteristics of incident light when raindrops are detected on the windshield, based on the correction of detection errors through comparison of multiple frames of data.

[0059] According to a second aspect of the present invention, a method for preventing glare by dynamically adjusting the polarization direction of a windshield based on optical sensing is provided, comprising:

[0060] Real-time capture of the polarization characteristics of incident light;

[0061] Polarization characteristics include polarization direction, degree of polarization, and spectral wavelength;

[0062] Based on the polarization characteristics captured by the optical sensor, determine the polarized glare that has the greatest impact on driving, and calculate the target polarization direction that is perpendicular to the polarization direction of the polarized glare.

[0063] Based on the judgment of polarized glare, which has the greatest impact on driving, and the calculation of the target polarization direction perpendicular to the polarization direction of the polarized glare, an instruction is generated to filter the polarized glare and retain the safe light.

[0064] According to the instructions of the vehicle control unit, it adjusts its own polarization transmission direction in real time to the target polarization direction in order to filter the selected polarized glare and retain other unpolarized light as safe light.

[0065] According to a third aspect of the present invention, an electronic device is provided, comprising: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0066] The memory stores a computer program that, when executed by a processor, causes the processor to perform steps such as an anti-glare method that dynamically adjusts the polarization direction of the windshield based on optical sensing.

[0067] According to a fourth aspect of the present invention, a computer-readable storage medium is provided storing a computer program executable by an electronic device, which, when run on the electronic device, causes the electronic device to perform steps such as an anti-glare method for dynamically adjusting the polarization direction of a windshield based on optical sensing.

[0068] According to a fifth aspect of the present invention, a vehicle cabin is provided, comprising:

[0069] Electronic equipment for implementing steps of an anti-glare method, such as dynamically adjusting the polarization direction of a windshield based on optical sensing;

[0070] The processor runs a program that, when running, executes steps from data output by the electronic device, such as an anti-glare method that dynamically adjusts the polarization direction of the windshield based on optical sensing.

[0071] Storage medium for storing programs that, when running, perform steps such as an anti-glare method based on optical sensing to dynamically adjust the polarization direction of the windshield in response to data output from an electronic device.

[0072] The above solution achieves the following beneficial technical effects:

[0073] This application addresses dynamically changing polarized glare (such as the shift in road surface reflection angle in rainy weather or the oblique polarization of oncoming headlights). It continuously filters glare by adjusting the polarization direction in real time, avoiding visual interference caused by the "filter failure" of traditional fixed polarization technology. For example, it can dynamically track changes in road surface polarization direction caused by the movement of the sun (from horizontal to 30° oblique), always maintaining a filtering efficiency of ≥80%, reducing the driver's judgment delay caused by glare (reaction time can be shortened by 0.3-0.5 seconds).

[0074] This application utilizes a spectral sensor to dually identify "polarization characteristics + spectral composition," enabling precise targeting of "glaring polarized light" (such as horizontally polarized reflections from road surfaces and obliquely polarized light reflected from vehicle headlights) while preserving unpolarized safe light (such as traffic lights and the outline light of vehicles ahead). Compared to traditional light sensors, it reduces "false filtering" (such as avoiding obstruction of red light signals) and "missed filtering" (such as not missing glare from oncoming high beams) by more than 90%.

[0075] This application addresses scenarios such as tunnel entrances / exits (sudden changes in strong light), rain (water film scattering), and reflections from tall buildings in cities (sudden polarized light) by employing millisecond-level adjustment response (≤50ms) and environmental error compensation algorithms to avoid the "hysteresis failure" of traditional manual adjustment or fixed coatings. For example, even when raindrops obstruct the glass in rainy weather, it can still correct detection errors through multi-frame data comparison, with the anti-glare effect attenuating by no more than 10%.

[0076] This application selectively filters glaring polarized light, rather than reducing light transmittance across the board, thus retaining over 85% of effective ambient light (such as road details and surrounding vehicle dynamics), avoiding the visual strain caused by excessively dark vision in traditional solutions. Drivers no longer need to squint or avoid light, and eye muscle fatigue can be reduced by over 40%, significantly improving concentration during long-distance driving. Attached Figure Description

[0077] Figure 1This is a flowchart of an anti-glare method for dynamically adjusting the polarization direction of a windshield based on optical sensing, provided by one or more embodiments of the present invention.

[0078] Figure 2 This is a structural diagram of an anti-glare system based on optical sensing for dynamically adjusting the polarization direction of the windshield, provided by one or more embodiments of the present invention.

[0079] Figure 3 This is a block diagram of an electronic device for an anti-glare method based on optical sensing for dynamically adjusting the polarization direction of the windshield, provided by one or more embodiments of the present invention. Detailed Implementation

[0080] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0081] Figure 1 This is a flowchart of an anti-glare method for dynamically adjusting the polarization direction of a windshield based on optical sensing, provided by one or more embodiments of the present invention.

[0082] like Figure 1 The anti-glare method based on optical sensing for dynamically adjusting the polarization direction of the windshield includes:

[0083] Step S1: Real-time capture of the polarization characteristics of the incident light;

[0084] Polarization characteristics include polarization direction, degree of polarization, and spectral wavelength;

[0085] Step S2 determines the polarized glare that has the greatest impact on driving based on the polarization characteristics captured by the optical sensor, and calculates the target polarization direction that is perpendicular to the polarization direction of the polarized glare.

[0086] Based on the judgment of polarized glare, which has the greatest impact on driving, and the calculation of the target polarization direction perpendicular to the polarization direction of the polarized glare, an instruction is generated to filter the polarized glare and retain the safe light.

[0087] Step S3 adjusts its own polarization transmission direction to the target polarization direction in real time according to the instructions of the vehicle control unit, so as to filter the selected polarization glare and retain other unpolarized light as safe light.

[0088] Figure 2 This is a structural diagram of an anti-glare system based on optical sensing for dynamically adjusting the polarization direction of the windshield, provided by one or more embodiments of the present invention.

[0089] like Figure 2 The anti-glare system shown, which dynamically adjusts the polarization direction of the windshield based on optical sensing, includes: an optical sensor, an on-board control unit, and adjustable polarized glass;

[0090] Optical sensors used to capture the polarization characteristics of incident light in real time;

[0091] Polarization characteristics include polarization direction, degree of polarization, and spectral wavelength;

[0092] The vehicle control unit is used to determine the polarized glare that has the greatest impact on driving based on the polarization characteristics captured by the optical sensor, and to calculate the target polarization direction that is perpendicular to the polarization direction of the polarized glare.

[0093] The vehicle control unit generates instructions to filter polarized glare and retain safe light based on the judgment of polarized glare that has the greatest impact on driving and the calculation of the target polarization direction perpendicular to the polarization direction of the polarized glare.

[0094] Adjustable polarized glass is used to adjust its polarization transmission direction to the target polarization direction in real time according to the instructions of the vehicle control unit, so as to filter the selected polarized glare and retain other unpolarized light as safe light.

[0095] The optical sensor is installed inside the vehicle's windshield.

[0096] Adjustable polarized glass, installed on the vehicle's windshield;

[0097] The vehicle control unit is connected to the optical sensor and the adjustable polarization glass signal, respectively.

[0098] In this embodiment, it also includes:

[0099] Optical sensors determine the polarization direction of incident light through polarization spectral analysis, including a recognition range covering 0°-360° with 0° as the horizontal reference.

[0100] Degree of polarization is used to determine the proportion of polarized light in glare;

[0101] Spectral wavelengths are used to distinguish between harmful glare and necessary light, with filtering blue light in the visible light spectrum taking precedence over filtering red and green light.

[0102] In this embodiment, it also includes:

[0103] The glare detection function of the vehicle control unit includes:

[0104] Daytime and nighttime scenes are divided by light intensity and illumination angle. During the day, horizontally polarized reflections from the road surface are filtered out first, while at night, polarized light reflected from oncoming vehicle headlights is filtered out first.

[0105] The vehicle control unit is also equipped with an environmental error compensation algorithm to correct detection errors in complex environments such as rainy days and tunnel entrances and exits.

[0106] Among these measures, the detection error is corrected to ensure that the degree of glare reduction does not exceed a preset glare reduction threshold.

[0107] In this embodiment, it also includes:

[0108] Adjustable polarizing glass, employing a liquid crystal polarizing film structure;

[0109] The liquid crystal polarizing film structure includes a liquid crystal layer embedded in a glass interlayer. Based on adjusting the voltage applied to the liquid crystal layer by the vehicle control unit, the alignment direction of the liquid crystal molecules is changed, and the polarization transmission direction can be continuously adjusted from 0° to 360° through continuous adjustment of the voltage.

[0110] Among them, adjustable polarized glass is selected based on a preset response speed threshold and used for the windshield.

[0111] In this embodiment, it also includes:

[0112] Tunable polarized glass, employing electrochromic materials and a polarized glass structure;

[0113] Among them, by combining electrochromic materials with polarization structures, the polarization characteristics of the materials are changed by voltage to adapt to the ground temperature changes in vehicle usage scenarios;

[0114] Among them, the polarization transmission direction adjustment range is controlled between 0° and 90° based on the ground temperature change.

[0115] In this embodiment, it also includes:

[0116] When calculating the target polarization direction to achieve the anti-glare effect, the vehicle control unit prioritizes ensuring the brightness of the field of view.

[0117] This includes filtering polarized glare while retaining unpolarized ambient light;

[0118] The preset field-of-view brightness threshold is 85%.

[0119] Based on a preset field of view brightness threshold, ensure that the field of view brightness includes a retained field of view brightness ratio greater than or equal to 85% of the field of view brightness before the anti-glare effect is achieved.

[0120] In this embodiment, it also includes:

[0121] An optical sensor is installed inside the vehicle's windshield.

[0122] Among them, it is installed near the rearview mirror inside the vehicle and close to the windshield;

[0123] Among them, adjustable polarized glass is selected based on a preset response speed threshold, with a response speed threshold of 50ms;

[0124] The adjustment response speed of adjustable polarizing glass includes an adjustment response speed of ≤50ms.

[0125] In this embodiment, it also includes:

[0126] The polarization direction calculation function of the vehicle control unit is configured as follows:

[0127] When the glare polarization direction is detected to be 0°, the adjustable polarizing glass is controlled to adjust the polarization transmission direction to 90°.

[0128] In this embodiment, it also includes:

[0129] Optical sensors correct detection errors by comparing multiple frames of data;

[0130] This includes capturing the polarization characteristics of incident light when raindrops are detected on the windshield, based on the correction of detection errors through comparison of multiple frames of data.

[0131] In this embodiment, it also includes:

[0132] The thickness of adjustable polarized glass does not change the original thickness of the vehicle's windshield. When using a liquid crystal polarizing film structure, its continuous power consumption is adapted to the vehicle's power requirements. When using an electrochromic polarized glass structure, its anti-aging performance is adapted to the long-term use scenarios of automobiles.

[0133] It is worth noting that although this system / device only discloses the above-mentioned modules and units, it does not mean that this system / device is limited to the above-mentioned basic functional modules and units. On the contrary, what this invention intends to express is that, based on the above-mentioned basic functional modules, those skilled in the art can add one or more functional modules in combination with the prior art to form an infinite number of embodiments or technical solutions. That is to say, this system is open rather than closed. It cannot be assumed that the scope of protection of the claims of this invention is limited to the above-disclosed basic functional modules just because this embodiment only discloses a few basic functional modules.

[0134] In one specific embodiment, an anti-glare system that dynamically adjusts the polarization direction of a windshield is disclosed, comprising three main parts: an optical sensor, an on-board control unit, and an adjustable polarization glass.

[0135] 1. Optical sensor: Captures the polarization characteristics of incident light in real time.

[0136] The optical sensor is the "sensing core" and needs to be installed on the inside of the windshield (close to the glass, such as near the rearview mirror) to directly detect light incident on the glass from the outside, focusing on acquiring three key parameters:

[0137] 1) Polarization direction: Determine the polarization direction (e.g., 30°, 90°, with the horizontal direction as the reference) of the current main glare (such as road reflection, oncoming vehicle lights) through "polarization spectrum analysis".

[0138] 2) Polarization degree: Determine the "proportion of polarized light" in the glare (the higher the proportion, the more obvious the anti-glare effect after filtering. For example, the polarization degree of road surface reflection can reach more than 80%, so it needs to be filtered first).

[0139] 3) Spectral wavelength: helps distinguish between "harmful glare" and "necessary light" (e.g., blue light in visible light is prone to glare and needs to be filtered out; while red and green light have little impact on visual clarity and can be filtered out less).

[0140] 2. Onboard control unit: Controls the polarization direction to reduce the polarization of incident light.

[0141] A specific algorithm was designed to achieve two core functions: glare detection and polarization direction calculation.

[0142] 1) Glare assessment: Identify polarized glare that has the greatest impact on driving from complex lighting conditions.

[0143] For example:

[0144] During the day, prioritize filtering "horizontally polarized reflections from the road surface" (high degree of polarization, persistent).

[0145] At night, priority is given to filtering "polarized light reflected from oncoming headlights" (high brightness, strong instantaneous interference).

[0146] 2) Calculation of polarization direction

[0147] The goal is to make the polarization direction of the electronic polarization film perpendicular to the polarization direction of the glare to be filtered (e.g., if the polarization direction of the glare is 0° (horizontal), then the glass is adjusted to 90° (vertical) to achieve the maximum filtering effect).

[0148] At the same time, the vehicle control unit needs to balance "anti-glare" and "visual field brightness". For example, when filtering glare, it should retain non-polarized ambient light (such as diffused light on a cloudy day, which is non-polarized) to avoid excessive filtering by the glass, which would result in an overly dark field of vision.

[0149] 3. Adjustable polarization glass: The core execution module for changing the direction of light transmission.

[0150] According to the instructions of the control module, the glass adjusts its "polarization transmission direction" in real time (for example, when horizontal polarization reflections are detected on the road surface, the glass automatically switches to "vertical polarization" to filter the reflections).

[0151] There are currently two feasible technical solutions:

[0152] 1) Liquid crystal polarizing film

[0153] Principle: A liquid crystal layer is embedded in a glass interlayer. By changing the alignment of the liquid crystal molecules with voltage, the polarization transmission direction is adjusted (voltage change → molecule rotation → change in transmission direction).

[0154] Advantages: Fast response (millisecond level), continuously adjustable polarization direction (0-360°), thin thickness (does not affect the original thickness of the glass)

[0155] Disadvantages: Requires continuous power supply (power consumption is low and acceptable); response speed may decrease in low-temperature environments.

[0156] 2) Electrochromic polarizing glass

[0157] Principle: Combining electrochromic materials with polarization structures, the polarization characteristics of the material are changed by voltage (such as the transmission direction changing linearly with voltage).

[0158] Advantages: Anti-aging, adaptable to high / low temperature environments (automotive-friendly).

[0159] Disadvantages: Limited adjustment range (some designs can only switch between 0-90°), and slightly slow response time (approximately 100-200ms).

[0160] In another specific embodiment, the working principle of an electronic polarization film is disclosed:

[0161] It consists of liquid crystal material and transparent electrodes. Liquid crystal molecules possess unique optical anisotropy; in the absence of an external electric field, their alignment is random, having little impact on the polarization characteristics of light. When a voltage is applied to the transparent electrodes, the liquid crystal molecules undergo an orientation change under the influence of the applied electric field, thereby altering their ability to modulate the polarization of light. By precisely controlling the magnitude and direction of the voltage, the transmission direction of the polarization film can be precisely adjusted, enabling real-time matching and adjustment based on the glare polarization characteristics detected by the spectral sensor, effectively filtering glare.

[0162] Traditional fixed-polarization glass can only filter polarized light in a specific direction. For example, common horizontally polarized glass only has a certain filtering effect on glare polarized in the horizontal direction. When the polarization direction of the glare changes (such as when the polarization direction of road reflections changes when the vehicle turns), the filtering effect is greatly reduced. However, technology based on spectral sensors to adjust the polarization direction in real time can sense and adapt to dynamic changes in the polarization direction of glare, maintaining a consistently high glare filtering capability. Compared to ordinary anti-glare rearview mirrors, which mainly target strong light from vehicles behind by reducing reflectivity, failing to address various polarized glare problems from the road ahead, this technology addresses the issue directly by reducing forward glare entering the driver's eyes through the windshield, making it a more crucial and comprehensive improvement in driving safety.

[0163] Figure 3 This is a block diagram of an electronic device for an anti-glare method based on optical sensing for dynamically adjusting the polarization direction of the windshield, provided by one or more embodiments of the present invention.

[0164] like Figure 3 As shown, this application provides an electronic device, including: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

[0165] The memory stores a computer program that, when executed by the processor, causes the processor to perform steps of an anti-glare method based on optical sensing to dynamically adjust the polarization direction of the windshield.

[0166] This application also provides a computer-readable storage medium storing a computer program executable by an electronic device, which, when run on the electronic device, causes the electronic device to perform the steps of an anti-glare method based on optical sensing to dynamically adjust the polarization direction of a windshield.

[0167] This application also provides a vehicle cabin, including:

[0168] Electronic device for implementing a method of anti-glare mechanism based on optical sensing to dynamically adjust the polarization direction of a windshield;

[0169] The processor runs a program that, when running, executes steps of an anti-glare method based on optical sensing to dynamically adjust the polarization direction of the windshield from data output by the electronic device.

[0170] A storage medium for storing a program that, when running, executes steps of an anti-glare method based on optical sensing to dynamically adjust the polarization direction of the windshield in response to data output from an electronic device.

[0171] The communication bus mentioned in the above electronic devices can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in the diagram, but this does not indicate that there is only one bus or one type of bus.

[0172] The electronic device comprises a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on the operating system. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory. The operating system can be any one or more computer operating systems that control the electronic device through processes, such as Linux, Unix, Android, iOS, or Windows. Furthermore, in this embodiment of the invention, the electronic device can be a smartphone, tablet computer, or other handheld device, or a desktop computer, portable computer, or other electronic device; there is no particular limitation in this embodiment.

[0173] In this embodiment of the invention, the executing entity for electronic device control can be an electronic device itself, or a functional module within an electronic device capable of calling and executing a program. The electronic device can obtain the firmware corresponding to the storage medium. This firmware is provided by the supplier, and different storage media may have the same or different firmware; no limitation is made here. After obtaining the firmware corresponding to the storage medium, the electronic device can write this firmware into the storage medium; specifically, it burns the firmware corresponding to the storage medium into the storage medium. The process of burning the firmware into the storage medium can be implemented using existing technology, and will not be elaborated upon in this embodiment of the invention.

[0174] Electronic devices can also obtain reset commands corresponding to the storage media. The reset commands corresponding to the storage media are provided by the supplier. The reset commands corresponding to different storage media can be the same or different, and no restrictions are imposed here.

[0175] At this time, the storage medium of the electronic device is a storage medium on which the corresponding firmware has been written. The electronic device can respond to the reset command corresponding to the storage medium on which the corresponding firmware has been written, thereby resetting the storage medium on which the corresponding firmware has been written according to the reset command. The process of resetting the storage medium according to the reset command can be implemented by existing technology and will not be described in detail in this embodiment of the invention.

[0176] For ease of description, the above devices are described separately by function as various units and modules. Of course, in implementing this application, the functions of each unit and module can be implemented in one or more software and / or hardware.

[0177] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the meaning consistent with their meaning in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined.

[0178] For the sake of simplicity, the method embodiments are described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0179] As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments or some parts of the embodiments of this application.

[0180] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dynamic adjustment system for the polarization direction of a windshield based on optical sensing, characterized in that, The anti-glare system based on optical sensing and dynamically adjusting the polarization direction of the windshield includes: an optical sensor, an on-board control unit, and adjustable polarized glass; The optical sensor is used to capture the polarization characteristics of the incident light in real time. The polarization characteristics include polarization direction, degree of polarization, and spectral wavelength; The vehicle control unit is used to determine the polarized glare that has the greatest impact on driving based on the polarization characteristics captured by the optical sensor, and to calculate the target polarization direction that is perpendicular to the polarization direction of the polarized glare. The vehicle control unit generates instructions to filter polarized glare and retain safe light based on the judgment of polarized glare that has the greatest impact on driving and the calculation of the target polarization direction perpendicular to the polarization direction of the polarized glare. The adjustable polarization glass is used to adjust its own polarization transmission direction to the target polarization direction in real time according to the instructions of the vehicle control unit, so as to filter the selected polarization glare and retain other unpolarized light as safe light. The optical sensor is installed inside the windshield of the vehicle. The adjustable polarizing glass is installed at the windshield of the vehicle; The vehicle control unit is connected to the optical sensor and the adjustable polarization glass signal, respectively.

2. The anti-glare system based on optical sensing for dynamically adjusting the polarization direction of the windshield according to claim 1, characterized in that, Also includes: The optical sensor determines the polarization direction of the incident light through polarization spectral analysis, including a recognition range covering 0°-360° with 0° as the horizontal reference. The degree of polarization is used to determine the proportion of polarized light in glare; The spectral wavelengths are used to distinguish between harmful glare and necessary light, wherein filtering blue light in the visible light takes priority over filtering red and green light.

3. The anti-glare system based on optical sensing for dynamically adjusting the polarization direction of the windshield according to claim 1, characterized in that, Also includes: The glare detection function of the vehicle control unit includes: Daytime and nighttime scenes are divided by light intensity and illumination angle. During the day, horizontally polarized reflections from the road surface are filtered out first, while at night, polarized light reflected from oncoming vehicle headlights is filtered out first. The vehicle control unit is also equipped with an environmental error compensation algorithm to correct detection errors in complex environments such as rainy days and tunnel entrances / exits. Among these measures, the detection error is corrected to ensure that the degree of glare reduction does not exceed a preset glare reduction threshold.

4. The anti-glare system based on optical sensing for dynamically adjusting the polarization direction of the windshield according to claim 1, characterized in that, Also includes: The adjustable polarization glass adopts a liquid crystal polarization film structure; The liquid crystal polarization film structure includes a liquid crystal layer structure embedded in a glass interlayer. Based on adjusting the voltage applied to the liquid crystal layer by the vehicle control unit, the alignment direction of the liquid crystal molecules is changed, and the polarization transmission direction can be continuously adjusted from 0° to 360° through continuous adjustment of the voltage. Among them, adjustable polarized glass is selected based on a preset response speed threshold and used for the windshield.

5. The anti-glare system based on optical sensing for dynamically adjusting the polarization direction of the windshield according to claim 1, characterized in that, Also includes: The adjustable polarizing glass employs an electrochromic material and a polarizing glass structure. Among them, by combining electrochromic materials with polarization structures, the polarization characteristics of the materials are changed by voltage to adapt to the ground temperature changes in vehicle usage scenarios; Among them, the polarization transmission direction adjustment range is controlled between 0° and 90° based on the ground temperature change.

6. The anti-glare system based on optical sensing for dynamically adjusting the polarization direction of the windshield according to claim 1, characterized in that, Also includes: When calculating the target polarization direction to achieve the anti-glare effect, the vehicle control unit prioritizes ensuring the brightness of the field of view. This includes filtering polarized glare while retaining unpolarized ambient light; The preset field-of-view brightness threshold is 85%. Based on a preset field of view brightness threshold, ensure that the field of view brightness includes a retained field of view brightness ratio greater than or equal to 85% of the field of view brightness before the anti-glare effect is achieved.

7. The anti-glare system based on optical sensing for dynamically adjusting the polarization direction of the windshield according to claim 1, characterized in that, Also includes: The optical sensor is installed inside the windshield of the vehicle; Among them, it is installed near the rearview mirror inside the vehicle and close to the windshield; Among them, adjustable polarized glass is selected based on a preset response speed threshold, with a response speed threshold of 50ms; The adjustable polarizing glass has a setting response speed of ≤50ms.

8. The anti-glare system based on optical sensing for dynamically adjusting the polarization direction of the windshield according to claim 1, characterized in that, Also includes: The polarization direction calculation function of the vehicle control unit is configured as follows: When the glare polarization direction is detected to be 0°, the adjustable polarizing glass is controlled to adjust the polarization transmission direction to 90°.

9. The anti-glare system based on optical sensing for dynamically adjusting the polarization direction of the windshield according to claim 1, characterized in that, Also includes: The optical sensor corrects detection errors by comparing multiple frames of data. This includes capturing the polarization characteristics of incident light when raindrops are detected on the windshield, based on the correction of detection errors through comparison of multiple frames of data.

10. A method for preventing glare by dynamically adjusting the polarization direction of a windshield based on optical sensing, characterized in that, The anti-glare method based on optical sensing for dynamically adjusting the polarization direction of the windshield includes: Real-time capture of the polarization characteristics of incident light; The polarization characteristics include polarization direction, degree of polarization, and spectral wavelength; Based on the polarization characteristics captured by the optical sensor, determine the polarized glare that has the greatest impact on driving, and calculate the target polarization direction that is perpendicular to the polarization direction of the polarized glare. Based on the judgment of polarized glare, which has the greatest impact on driving, and the calculation of the target polarization direction perpendicular to the polarization direction of the polarized glare, an instruction is generated to filter the polarized glare and retain the safe light. According to the instructions of the vehicle control unit, it adjusts its own polarization transmission direction in real time to the target polarization direction in order to filter the selected polarized glare and retain other unpolarized light as safe light.

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