Vehicle window control method, system and device and vehicle

Abstract

The invention discloses a vehicle window control method, system and device and a vehicle. The method comprises the following steps: acquiring optical parameters of light incident to a first window area of a vehicle at the first time, wherein the optical parameters comprise first illuminance and first optical radiation intensity; and setting optical performance parameters of the first vehicle window area according to the optical parameters. According to the embodiment of the invention, the optical performance parameter of the first vehicle window area is cooperatively set by combining the illuminance and the optical radiation intensity, so that the dynamic environment response capability of the vehicle window glass color changing function can be remarkably improved, and the effects of intelligently identifying complex illumination scene changes and adaptively adjusting vehicle window glass color changing are achieved; moreover, the implementation of the embodiment of the invention does not depend on high-cost materials, so that the cost is also saved.

Description

Technical Field

[0001] The present application relates to the field of smart vehicle technology, and in particular to a vehicle window control method, system, device and vehicle. Background Art

[0002] With the development of the automotive industry and the increasing diversification of user needs, the functions of vehicle window glass are no longer limited to traditional light transmission and protection, but are evolving towards intelligent and personalized features. Photochromic glass technology, due to its unique performance advantages, has gradually become a research hotspot in the automotive field. Regarding privacy protection, traditional vehicle windows often require physical sunshades or films to achieve a shielding effect, but these methods are inconvenient to use and lack aesthetic appeal. In contrast, photochromic glass can effectively block the vehicle interior in opaque or low-light transmission settings by adjusting its light transmittance, protecting passenger privacy. Regarding energy conservation and thermal comfort, photochromic glass not only regulates visible light but also selectively blocks ultraviolet and infrared rays, thereby reducing solar heat transfer, protecting passengers from glare, and enhancing ride comfort. It also reduces air conditioning energy consumption, contributing to improved vehicle energy efficiency and carbon emissions. Photochromic glass also offers aesthetic and personalization benefits. Its dynamic adjustment feature adds a sense of technology and style to vehicles, making the design more recognizable. Users can also choose automatic or manual adjustment modes to customize the color change effects to meet diverse needs. Especially in automatic adjustment mode, the car window glass can intelligently adjust the transmittance based on the ambient light intensity: automatically darken in strong light environment to reduce glare, protect privacy and reduce radiant heat; restore high transmittance in darker light to ensure a clear driving view and avoid the claustrophobic feeling that may be caused by traditional shading methods.

[0003] At present, the automatic adjustment technology of automobile photochromic glass mainly relies on ambient light intensity detection or photosensitive materials, but there are still problems such as insufficient adaptability and high cost.

[0004] For example, automatic adjustment technology based on incident sunlight intensity calculates the amount of sunlight input to control glass color and adjusts the degree of color change based on ambient temperature to optimize comfort and energy savings. However, this method relies on direct sunlight and is difficult to accurately trigger color change in low-light or complex lighting environments, such as on cloudy days, in garages, or indoors, resulting in delayed or ineffective adjustment.

[0005] For example, photoresistor-based automatic adjustment technology uses photoresistors to detect light intensity and control the transmittance of liquid crystal glass, dimming it in strong light and restoring it to transparency in weak light. However, photoresistors are susceptible to environmental interference (such as shadows and artificial light sources), and the high manufacturing cost of liquid crystal glass has made them difficult to popularize.

[0006] For example, the automatic adjustment technology based on photosensitizer and copper oxide catalysis: automatic color change is achieved through the chemical reaction of photosensitive materials, which has low cost, but the response speed is slow, and the photosensitizer is prone to aging. The performance degrades after long-term use and cannot adapt to frequently changing light conditions.

[0007] In summary, existing technologies either rely on a single light parameter, making them difficult to adapt to complex environments, or rely on high-cost materials, which hinders commercial application. A low-cost, highly adaptable solution for changing the color of automotive window glass is urgently needed, balancing dynamic environmental response with economic benefits. Summary of the Invention

[0008] The present application provides a vehicle window control method, system, device and vehicle, which utilizes illuminance and light radiation intensity to collaboratively control the color change of vehicle window glass. The vehicle window glass color change can be accurately controlled in a variety of scenarios to adapt to changes in complex scenarios while taking into account low cost.

[0009] In a first aspect, a vehicle window control method is provided, comprising: obtaining light parameters of light incident on a first vehicle window area of a vehicle at a first time, the light parameters comprising a first light illuminance and a first light radiation intensity; and setting optical performance parameters of the first vehicle window area according to the light parameters.

[0010] The embodiment of the present application combines illuminance and light radiation intensity to collaboratively set the optical performance parameters of the first window area. The illuminance can accurately characterize the lighting conditions of low-brightness (or low illumination or low radiation) scenes, so even in low-light environments such as cloudy days, garages, or indoors, the first window area can be triggered to change color in a timely and accurate manner. The light radiation intensity can accurately characterize the energy distribution of sunlight, so even in strong light environments such as sunny days and plateaus, the first window area can be triggered to change color in a timely and accurate manner. The embodiment of the present application can significantly improve the dynamic environmental response capability of the window glass color change function (that is, the ability to perceive environmental changes in real time and autonomously adjust the optical performance parameters of the window), and achieve the effect of intelligently identifying changes in complex lighting scenes and adaptively adjusting the color change of the window glass. For example, the transmittance of the glass on both sides of the car can be automatically adjusted when the scene changes, such as sunrise and sunset, entering and exiting tunnels, turning and U-turning, to ensure the user's visual comfort and body temperature balance.

[0011] Moreover, the implementation of the above solutions does not rely on high-cost materials. For example, it only requires the simple addition of a light intensity sensor or a light radiation intensity sensor, or the use of the vehicle's own hardware and mathematical reasoning, thus saving costs.

[0012] In summary, the embodiments of the present application can achieve both low cost and high adaptability.

[0013] In one possible design, when the first light radiation intensity is within a first range, the optical performance parameter of the first window area is set to a first optical performance parameter according to the first light illuminance; and / or, when the first light radiation intensity is within a second range, the optical performance parameter of the first window area is set to a second optical performance parameter according to the first light radiation intensity.

[0014] This design approach uses different optical performance parameter setting schemes according to the numerical range of light radiation intensity. This can achieve the use of different optical performance parameter setting schemes in different scenarios. In various scenarios, the optical performance parameters of the first window area can be precisely controlled to adapt to changes in complex scenarios.

[0015] In a possible design, a first optical performance parameter corresponding to the first illuminance is determined according to the first illuminance and a first mapping relationship, where the first mapping relationship is a mapping relationship between illuminance and optical performance parameters.

[0016] This design method uses the mapping relationship between illumination and optical performance parameters to determine the optical performance parameters, and is simple to implement.

[0017] In one possible design, a second optical performance parameter corresponding to the first optical radiation intensity is determined according to the first optical radiation intensity and a second mapping relationship, where the second mapping relationship is a mapping relationship between optical radiation intensity and optical performance parameters.

[0018] This design method uses the mapping relationship between light radiation intensity and optical performance parameters to determine the second optical performance parameter corresponding to the first light radiation intensity, and the implementation method is simple.

[0019] In one possible design, the first range is a range smaller than a light radiation intensity threshold, and the second range is a range greater than or equal to the light radiation intensity threshold.

[0020] This design method determines the optical performance parameters based on the illuminance when the light radiation intensity is less than the light radiation intensity threshold, and determines the optical performance parameters based on the light radiation intensity when the light radiation intensity reaches the light radiation intensity threshold, which meets the actual scene requirements.

[0021] In one possible design, the optical performance parameter of the first window area is set to a third optical performance parameter based on the first light radiation intensity, the first illuminance and a third mapping relationship, and the third mapping relationship is a mapping relationship between light radiation intensity, illuminance and optical performance parameters.

[0022] This design method uses the mapping relationship between light radiation intensity, illuminance and optical performance parameters to determine the optical performance parameters, and the implementation is simple.

[0023] In one possible design, optical performance parameters of the first window area are set according to light parameters when preset conditions are met; wherein the preset conditions include: the fluctuation amplitude of the light parameters of light incident on the first window area within a first time range is within a preset amplitude range, and the first time range is related to the first time.

[0024] This design can set the optical performance parameters of the first window area according to relatively stable lighting conditions, accurately trigger the color change of the window glass, improve the reliability of the solution, and avoid problems such as frequent triggering of window glass color change leading to power waste and affecting user experience.

[0025] In one possible design, the first illuminance is acquired based on an illuminance sensor of the first vehicle window area.

[0026] This design is simple and easy to implement.

[0027] In one possible design, the sensitivity of the first vehicle window area is obtained based on the image sensor, and the first illuminance is determined according to the sensitivity of the first vehicle window area.

[0028] This design approach does not require adding an illuminance sensor in the first window area, thus saving hardware costs.

[0029] In one possible design, a light radiation intensity sensor based on the first vehicle window area obtains the first light radiation intensity.

[0030] This design is simple and easy to implement.

[0031] In one possible design, the first light radiation intensity is determined based on the light radiation intensity corresponding to the second window area, vehicle posture information, the current time, and vehicle location information. The vehicle posture information includes, for example, but is not limited to, at least one of a heading angle, a pitch angle, or latitude and longitude.

[0032] This design approach does not require adding a light radiation intensity sensor in the first window area, thus saving hardware costs.

[0033] In a possible design, the second window area is the front windshield window area.

[0034] In this design method, the light radiation intensity of the windshield window area is clearly used to infer the light radiation intensity corresponding to the second window area, thereby improving the reliability of the solution.

[0035] In one possible design, the first window area is one or more of the following: left rear window area; right rear window area; left front window area; right front window area; rear windshield window area; sunroof area; triangular window area.

[0036] Of course, the above are just examples and are not limited to these.

[0037] This design provides multiple possibilities for the first window area, improving the flexibility of the solution.

[0038] In one possible design, the optical performance parameters of the first window area are the optical performance parameters of the color-changing glass on the first window area, and the optical performance parameters include one or more of the following: transmittance; shading rate; chromaticity; refractive index; reflectivity; haze; ultraviolet transmittance; and infrared transmittance.

[0039] Of course, the above are just examples and are not limited to these.

[0040] This design provides multiple possibilities for optical performance parameters and improves the flexibility of the solution.

[0041] In one possible design, setting the optical performance parameters of the first vehicle window area according to the light parameters includes: sending a control instruction to a controller of the first vehicle window area, where the control instruction is used to indicate the optical performance parameters of the first vehicle window area.

[0042] The design clarifies that the optical performance parameters of the first window area are set by sending control instructions, which is compatible with the vehicle's existing control logic and simple to implement.

[0043] In a second aspect, a vehicle window control system is provided, comprising:

[0044] at least one sensor for collecting environmental data;

[0045] The control device is used to obtain light parameters of light incident on a first window area of the vehicle at a first time based on environmental data, the light parameters including a first light illuminance and a first light radiation intensity; and set optical performance parameters of the first window area based on the light parameters.

[0046] In one possible design, the control device is used to: set the optical performance parameter of the first window area to a first optical performance parameter based on the first light illuminance when the first light radiation intensity is within a first range; and / or set the optical performance parameter of the first window area to a second optical performance parameter based on the first light radiation intensity when the first light radiation intensity is within a second range.

[0047] In one possible design, the control device is used to determine a first optical performance parameter corresponding to the first illuminance based on the first illuminance and a first mapping relationship, where the first mapping relationship is a mapping relationship between illuminance and optical performance parameters.

[0048] In one possible design, the control device is used to determine a second optical performance parameter corresponding to the first light radiation intensity based on the first light radiation intensity and a second mapping relationship, where the second mapping relationship is a mapping relationship between light radiation intensity and optical performance parameters.

[0049] In one possible design, the first range is a range smaller than a light radiation intensity threshold, and the second range is a range greater than or equal to the light radiation intensity threshold.

[0050] In one possible design, the control device is used to set the optical performance parameters of the first window area to third optical performance parameters based on the first light radiation intensity, the first light illuminance and a third mapping relationship, where the third mapping relationship is a mapping relationship between light radiation intensity, light illuminance and optical performance parameters.

[0051] In one possible design, the control device is used to: set the optical performance parameters of the first window area according to the light parameters when preset conditions are met; wherein the preset conditions include: the fluctuation amplitude of the light parameters of the light incident on the first window area within a first time range is within a preset amplitude range, and the first time range is related to the first time.

[0052] In one possible design, the sensor includes an illuminance sensor arranged in the first window area, and the environmental data includes the first illuminance; or, the sensor includes an image sensor arranged in the first window area, the environmental data includes the sensitivity of the first window area, and the control device is used to determine the first illuminance based on the sensitivity of the first window area.

[0053] In one possible design, the sensor includes a light radiation intensity sensor arranged in the first window area, and the environmental data includes the first light radiation intensity; or the sensor includes a light radiation intensity sensor arranged in the second window area, and the environmental data includes the light radiation intensity corresponding to the second window area, and the control device is used to determine the first light radiation intensity based on the light radiation intensity corresponding to the second window area, the vehicle's body posture information, the current time, and the vehicle's position information.

[0054] In one possible design, the vehicle body posture information includes at least one of a heading angle, a pitch angle, or longitude and latitude.

[0055] In a possible design, the second window area is the front windshield window area.

[0056] In one possible design, the first window area is one or more of the following: left rear window area; right rear window area; left front window area; right front window area; rear windshield window area; sunroof area; triangular window area.

[0057] In one possible design, the optical performance parameters include one or more of the following: transmittance; shading rate; chromaticity; refractive index; reflectivity; haze; ultraviolet transmittance; and infrared transmittance.

[0058] In one possible design, the control device is used to send a control instruction to a controller of the first vehicle window area, where the control instruction is used to indicate an optical performance parameter of the first vehicle window area.

[0059] In a third aspect, a control device is provided, comprising a module or unit for executing the method as described in the first aspect or any possible design of the first aspect.

[0060] In a fourth aspect, a control device is provided, comprising: a processor, the processor and a memory coupled, the memory being used to store computer programs or instructions, and the processor being used to execute the computer programs or instructions to implement the method described in the first aspect or any possible design of the first aspect.

[0061] In a fifth aspect, a vehicle is provided, comprising a window control system as in the second aspect or any possible design of the second aspect, and / or a control device as in the third aspect or the fourth aspect.

[0062] In a sixth aspect, a computer-readable storage medium is provided, in which a computer program or instruction is stored. When the computer program or instruction is executed, the method described in the first aspect or any possible design of the first aspect is implemented.

[0063] In a seventh aspect, a computer program product is provided, which includes instructions. When the instructions are executed, the method described in the first aspect or any possible design of the first aspect is implemented.

[0064] The technical effects that can be achieved in the second to seventh aspects mentioned above can be referred to the description of the beneficial effects in the first aspect mentioned above, and will not be repeated here one by one. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 A schematic structural diagram of a vehicle provided in an embodiment of the present application;

[0066] Figure 2 A specific example of a car control system;

[0067] Figure 3 A flow chart of a vehicle window control method provided in an embodiment of the present application;

[0068] Figure 4 A specific example of a vehicle window control method provided in an embodiment of the present application;

[0069] Figure 5 A specific example of another vehicle window control method provided in an embodiment of the present application;

[0070] Figure 6 A specific example of another vehicle window control method provided in an embodiment of the present application;

[0071] Figure 7 A schematic diagram of the structure of a possible control device provided in an embodiment of the present application;

[0072] Figure 8 An architectural diagram of a possible software system provided in an embodiment of the present application;

[0073] Figure 9 A schematic structural diagram of another possible control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0074] The multiple involved in the embodiments of the present application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. In addition, it should be understood that although the terms first, second, etc. may be used to describe each object in the embodiments of the present invention, these objects should not be limited to these terms. These terms are only used to distinguish each object from each other.

[0075] The terms "including" and "having" and any variations thereof mentioned in the description of the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include other steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices. It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way.

[0076] The technical solutions provided by the embodiments of this application can be applied to various scenarios where glass is installed, especially scenarios where it is necessary to adjust the optical performance parameters of the glass. Optical performance parameters include, but are not limited to, one or more of the following: light transmittance (or transmittance), light blocking rate (or light blocking), chromaticity, refractive index, reflectivity, haze, ultraviolet transmittance, infrared transmittance, etc.

[0077] It can be understood that in the embodiments of the present application, the transmittance adjustment, shading rate adjustment, chromaticity adjustment (abbreviated as color change), refractive index adjustment, reflectivity adjustment, haze adjustment, ultraviolet transmittance adjustment or infrared transmittance adjustment, etc., are achieved with the same or similar steps, so one of the terms (such as "color change") can be used to refer to other terms (such as transmittance adjustment, shading rate adjustment, refractive index adjustment, reflectivity adjustment, haze adjustment, ultraviolet transmittance adjustment or infrared transmittance adjustment, etc.).

[0078] As a possible example, the embodiments of the present application can be applied to transportation vehicles, such as cars, ships, drones, trains, vans, and trucks. In the automotive field, photochromic glass can be used in windows, sunroofs, and rearview mirrors, automatically adjusting light transmittance according to ambient light, improving driving safety and riding comfort. On ship or aircraft windows, it can reduce glare while blocking ultraviolet and infrared rays, lowering cabin temperature.

[0079] As a possible example, the embodiments of the present application can be applied to buildings and smart homes, such as office glass curtain walls, residential windows, sunrooms, and smart partitions. The glass transmittance can be dynamically adjusted according to sunlight intensity, achieving energy savings and reducing consumption. The system supports manual or automatic switching of privacy modes, replacing traditional curtains.

[0080] As a possible example, embodiments of the present application can be applied to commercial displays and retail, such as luxury goods windows, museum showcases, or advertising screens. Photochromic glass can optimize display light, block UV rays to protect exhibits, and enhance visual appeal through dynamic dimming.

[0081] As a possible example, the embodiments of the present application can be applied to the medical and health field, such as hospital wards, convalescent centers, or special care rooms. The natural light intensity of the glass can be adjusted according to the patient's needs, reducing blue light interference and improving the recuperation environment.

[0082] As a possible example, the embodiments of the present application can be applied to electronic devices such as smart glasses, augmented reality (AR) / virtual reality (VR) devices, or mobile phone screens to improve display comfort through color-changing glass.

[0083] In addition, the embodiments of the present application can also be extended to fields such as agricultural greenhouses, military defense, and art installations to meet the needs of light management in diverse scenarios.

[0084] For ease of description, the following text takes the application in a car as an example.

[0085] See also Figure 1 , is a structural schematic diagram of a vehicle provided in an embodiment of the present application, wherein the vehicle includes a window system, a sensing system, and a control system.

[0086] The vehicle window system includes one or more windows, including, but not limited to, the front windshield, rear windshield, left front side window area (e.g., the driver's side window), right front side window (e.g., the passenger side window), left rear side window, right rear side window, sunroof, and triangular windows. It is understood that the number, location, and designation of the windows may vary as the vehicle's exterior structure changes. The windows comprise glass, and it should be understood that this article primarily relates to adjusting the optical parameters of the window glass. For ease of description, the term "window" may be used to refer to the window glass.

[0087] The perception system includes one or more sensors for collecting environmental data. Sensors include, but are not limited to: image sensors (such as driving recorders, reversing images, surround view cameras, etc.), light sensors (such as light intensity sensors, light radiation intensity sensors, color temperature sensors, etc.), etc. It is understood that Figure 1 The number and positions of the sensors shown in the figure are only examples and are not limited thereto.

[0088] Optionally, the perception system may also have processing capabilities, such as processing raw data collected by various sensors and outputting data that meets the requirements of the control system (such as illuminance, light radiation intensity, or sensitivity). Optionally, the processing capabilities of the perception system may also be integrated into the control system.

[0089] A control system has control capabilities. For example, it can connect to other components in the vehicle via a controller area network (CAN) bus, a local interconnect network (LIN) bus, or other methods, and send control signals to these components to control their operation. For example, a control system can control sensors to collect environmental data (such as illuminance, light radiation intensity, color temperature, or sensitivity); for example, a control system can change the optical performance parameters of vehicle windows, etc. Optionally, a control system also has processing capabilities, such as processing instructions or data.

[0090] In a specific implementation, the control system may include one or more control modules. When a control system includes multiple control modules, different control modules may control different components. For example, a first control module may control the optical performance parameters of a vehicle window, while a second control module may control a sensor to collect environmental data. Optionally, the control system may also include a central control module to coordinate and control the operation of the first control module, the second control module, and so on.

[0091] Each control module can be integrated into one device or distributed across multiple devices.

[0092] Exemplarily, when the first control module, the second control module, the central control module, etc. are integrated into one device, the device can specifically be an integrated circuit chip, for example, a general-purpose processor, a field programmable gate array (FPGA), an application-specific integrated circuit (ASIC), a system on chip (SoC), a network processor (NP), a digital signal processing circuit (DSP), a microcontroller unit (MCU), a programmable logic device (PLD), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components and other integrated chips. Among them, the device may include a central processing unit (CPU), a neural-network processing unit (NPU) and a graphics processing unit (GPU), and may also include an application processor (AP), a modem processor, an image signal processor (ISP), a video codec, a digital signal processor (DSP), and / or a baseband processor, etc., without specific limitation.

[0093] For example, when the first control module, the second control module, the central control module, etc. can be implemented separately in multiple devices, the control system can be a distributed controller. The control system can include multiple controllers distributed in different locations in the vehicle. For example, the control system includes one or more of a vehicle integration unit (VIU), a cockpit domain controller (CDC), an intelligent driving domain controller, a vehicle control domain controller, and a vehicle controller. It is understandable that different manufacturers may use slightly different nomenclature. For example, the cockpit domain controller may also be called a "smart cockpit main control chip," a human-machine interface and cockpit processor (HCP), etc.

[0094] See also Figure 2 , is a specific example of a vehicle control system, the control system includes:

[0095] The CDC integrates cockpit electronics, including the instrument panel, in-vehicle infotainment (IVI), heads-up display (HUD), and air conditioning controls. It supports multi-screen interaction and intelligent interaction, serving as the "brain" of the smart cockpit. Based on user input via the central control panel or rear-seat screens, the CDC issues commands to the corresponding components. For example, the CDC can issue an auto-tinting switch command to the VIU0, indicating whether the window auto-tinting feature is on or off. The CDC also receives status information from the VIU0, indicating whether the window auto-tinting feature is on or off.

[0096] The VIU, a core node in the vehicle's electrical and electronic architecture, integrates traditional body electronic functions such as the body control module (BCM), lighting control, door lock control, and window control (such as window opening and closing and window glass color change), achieving centralized control. In practice, multiple VIUs can be deployed in a distributed configuration.

[0097] As a possible example, Figure 2 As shown, the VIU includes VIU0, VIU1 and VIU2.

[0098] VIU0, the primary body domain controller, integrates vehicle-level body functions and serves as a central gateway to coordinate the operations of other VIUs. Key control targets include the vehicle's lighting system (headlights, turn signals, and ambient lighting), power management, the vehicle's anti-theft system, and the main control logic for wipers, windows, and sunroof. It interacts with the cockpit domain (CDC) and power domain via the CAN bus or Ethernet. Subordinate VIUs such as VIU1 and VIU2 can aggregate signals to it via the LIN or CAN bus.

[0099] As a possible example, Figure 2 As shown, VIU0 can include a main processing unit (MPU) and a microcontroller unit (MCU). The MPU can serve as a deployment unit for complex control algorithms (for example, the algorithm for determining the optical performance parameters of the first window area described later); the MCU can serve as a control signal processing unit (for example, processing control signals sent by the CDC).

[0100] The VIU1, the front vehicle area controller, implements electrical control for the front cabin and cockpit, focusing on functions requiring high real-time performance. Examples include adaptive headlight adjustment, automatic wiper control (based on a rain sensor), engine compartment lock / hood status monitoring, and control of the driver's door module (locks, windows, and rearview mirrors).

[0101] The VIU2, as the rear body area controller, manages comfort and convenience features in the rear cabin and passenger area. Examples include power tailgate control (with kick sensor and height memory), rear door / window control (including child lock logic), trunk lighting and power outlet management, and rear wiper / defrost control.

[0102] VIU1 and VIU2 can be connected to the car windows via the CAN or LIN bus and control the color change of the color-changing glass of the car windows (such as liquid crystal glass (LC)). In addition, they can also control the on / off status of the rear center switch group (CSB-R).

[0103] I understand. Figure 2 In the example given, the signals processed by VIU1, VIU2, and other devices are application programming interface (API) signals. These API signals need to be converted into CAN (or LIN) signals and then sent to the windows via the CAN (or LIN) bus. Similarly, CAN or LIN signals from the windows need to be converted into API signals before being processed by VIU1, VIU2, and other devices. Of course, this is just an example, and actual signal types are not limited to this.

[0104] certainly, Figure 2 The VIU0, VIU1, and VIU2 shown are only examples. In actual applications, other changes are possible, such as integrating VIU0, VIU1, and VIU2 into left / right zone controllers, or integrating VIU0, VIU1, and VIU2 into one controller, etc., to further reduce the complexity of the wiring harness.

[0105] It should be understood that Figure 1 、 Figure 2 Only some components of the vehicle are shown, and the vehicle may actually include other components.

[0106] See also Figure 3 , is a flow chart of a vehicle window control method provided in an embodiment of the present application, the execution subject of the method may be a vehicle (e.g. Figure 1 The car shown in FIG), or the control system of the car (such as Figure 2 The control system shown in the figure) can also be one or more control modules in the vehicle's control system (such as VIU0), without limitation.

[0107] S101 : Obtain light parameters of light incident on a first window area of a vehicle at a first time.

[0108] It is understood that the vehicle window area referred to herein mainly refers to the glass area of the vehicle window. The optical performance parameters of the vehicle window glass support adjustment, for example, the vehicle window glass is color-changing glass (such as liquid crystal glass, etc.).

[0109] The first window area may be the entire area of one or more vehicle windows. For example, the first window area includes one or more of the following: the left window area, the right window area, the rear windshield window area, the sunroof area, or the triangular window area. If the vehicle has two rows of seats, the left window area may be further divided into the left front window area and the left window area, and the right window area may be further divided into the right front window area and the right window area.

[0110] The first window area may also be a partial area of a window, or may be composed of partial areas of each of a plurality of windows, for example, the main driver's area of the front windshield, the passenger driver's area of the front windshield, the middle area of the rear windshield, and so on.

[0111] Light parameters include a first illuminance and a first solar irradiance. The first illuminance refers to the illuminance of light incident on the first window area of the vehicle at a first time, and the first solar irradiance refers to the solar irradiance intensity of light incident on the first window area of the vehicle at a first time. It should be understood that the light incident on the first window area of the vehicle primarily refers to light incident on the first window area of the vehicle from outside the vehicle.

[0112] The following is an introduction to illumination:

[0113] Illuminance refers to the luminous flux of visible light received per unit area, which can be used to quantify the light intensity that the human eye can perceive. Its international unit is lux (Lux), 1lx = 1 lumen (lm) / square meter (m 2 ).

[0114] Illuminance has the following key characteristics:

[0115] 1) Human eye response matching: Based on the spectral sensitivity of the human eye, only the visible light band (380-780nm) is measured, excluding ultraviolet (UV) and infrared (IR) interference.

[0116] 2) Wide dynamic range: can accurately represent the range from extremely weak light (0.1lx, moonlight) to strong light (10 5 For example, Table 1 shows some examples of illuminance in typical scenes.

[0117] Table 1

[0118] environment Illumination range (lx) Total darkness 0.001–0.1 moonlight 0.1–1 Indoor night lighting 10–100 cloudy outdoor 1,000–5,000 Sunny day shadow 10,000–25,000 direct midday sunlight 50,000–100,000

[0119] It should be understood that Table 1 is only used to illustrate that the illuminance has a wide dynamic range, and the correspondence between the actual environment and the illuminance range is not limited to the example given in Table 1.

[0120] 3) Direction independence: Unlike luminance, illuminance depends only on the total amount of incident light and is independent of the observation angle, making it suitable for global environmental assessment.

[0121] 4) Linear measurability: It can be directly measured by a silicon photodiode or spectrometer. The sensor response is linearly related to light intensity, ensuring high-precision resolution even in low illumination (e.g. <10lx).

[0122] These characteristics of illuminance enable it to accurately characterize lighting conditions in various environments, particularly low-brightness (or low illumination or low radiation) scenarios (such as cloudy days, indoors, and in garages). Illuminance can be used to precisely quantify the light incident on the first window area of a vehicle. For example, in a cloudy / indoor low-illuminance scenario, a highly sensitive sensor can detect subtle variations of 0.1-1,000 lx, distinguishing between "overcast and cloudy" (~2,000 lx) and "indoor office" (~500 lx).

[0123] It should be understood that illuminance can also be replaced by other parameters with the same or similar characteristics, such as luminous flux, luminous flux density, incident luminous intensity, illumination level or visible irradiance.

[0124] Here are several possible ways to obtain illumination:

[0125] In a possible implementation, the first illuminance is acquired based on an illuminance sensor in the first vehicle window area.

[0126] Combine Figure 2 The control system is given as an example: a light intensity sensor is installed in the first window area, and the light intensity sensor sends the light intensity collected at the first time to VIU0.

[0127] Optionally, the light sensor is specifically an ambient light sensor. The characteristic of the ambient light sensor is that it measures the overall light level of the environment (multidirectional scattered light + direct light), and has a wider market angle (such as

[0128] ±80°~180°), the use of an ambient light sensor helps to more accurately simulate the human eye's sensitivity to visible light (380-780nm), ensuring that the light control in the car meets human comfort needs.

[0129] This implementation method is simple in design and easy to implement.

[0130] In another possible implementation, the sensitivity of the first vehicle window area is acquired based on an image sensor, and the first illuminance is determined according to the sensitivity of the first vehicle window area.

[0131] Combine Figure 2 In the given control system example, a vehicle body is equipped with surround-view cameras (surround-view cameras refer to imaging devices deployed around the vehicle, such as left-side cameras, right-side cameras, front-view cameras, and rear-view cameras). These cameras can report captured image data to the VIU0. This image data includes light sensitivity, such as the International Organization for Standardization (ISO). ISO is a measure of a camera's or camera's light sensor's sensitivity to light. Higher ISO values increase the sensor's sensitivity, allowing it to capture more light in dim environments. Conversely, lower ISO values decrease the sensor's sensitivity, making it suitable for brightly lit environments. Therefore, the VIU0 can determine the current ambient light level based on the ISO value. For example, the mapping between light intensity and light sensitivity can be expressed as: light intensity = f(light sensitivity). Optionally, a mathematical model for converting sensitivity and illuminance (for ease of description, it can be called a sensitivity-illuminance conversion model) can be stored in advance in VIU0. VIU0 determines the illuminance based on the sensitivity and the mathematical model, which can improve the calculation rate.

[0132] This implementation method uses the light sensitivity obtained by the car's surround-view camera to infer the light intensity based on the light sensitivity, without the need for additional sensors, thus saving hardware costs.

[0133] The introduction of light radiation intensity is as follows:

[0134] Light radiation intensity refers to the solar radiation power received per unit area, which is used to quantify the energy input of sunlight. Its international unit is watts per square meter (W / m 2 ), which reflects the total energy of electromagnetic radiation (including ultraviolet, visible light, and infrared bands), not just the light visible to the human eye.

[0135] Light radiation intensity has the following key characteristics:

[0136] 1) Full-band coverage: The measurement range covers ultraviolet (UV, 200-400nm), visible light (VIS, 400-700nm) and near-infrared (NIR, 700-2500nm), fully reflecting the characteristics of the solar spectrum.

[0137] 2) High dynamic range: can accurately quantify the intensity of weak solar radiation (such as early morning, ~100W / m 2 ) to strong direct sunlight (midday, ~1,000W / m 2 For example, Table 2 shows some typical solar radiation scenarios.

[0138] Table 2

[0139] environment <![CDATA[Optical radiation intensity range (W / m 2 )]]> Sunrise / Sunset 100–300 cloudy or partly cloudy 300–600 Sunny day without direct sunlight 600–800 direct midday sunlight 800–1,100 Desert / high altitude areas 1,100–1,400

[0140] It should be understood that Table 2 is only used to illustrate the characteristic of light radiation intensity having a high dynamic range, and the correspondence between actual environments and light radiation intensity ranges is not limited to the examples given in Table 2.

[0141] 3) Directional sensitivity: Depends on the solar zenith angle. The actual radiation value at different times / locations can be calculated using a correction formula (such as the AM1.5 standard spectrum).

[0142] The objective energy properties of light radiation intensity (i.e., the ability of a physical quantity to directly quantify energy) enable precise characterization of sunlight's energy distribution, making it particularly suitable for high-brightness (or high-illuminance or high-radiation) scenarios. For example, on a sunny day, a pyranometer can distinguish between direct normal irradiance (DNI) and diffuse horizontal irradiance (DHI).

[0143] It should be understood that light radiation intensity can also be replaced by other parameters with the same or similar characteristics, such as solar irradiance, total radiant flux density, solar power density or shortwave radiation.

[0144] The following are several possible ways to obtain light radiation intensity:

[0145] In one possible design, a light radiation intensity sensor based on the first vehicle window area obtains the first light radiation intensity.

[0146] Combine Figure 2The control system is given as an example: a light radiation intensity sensor is installed in the first window area, and the light radiation intensity sensor collects the light radiation intensity at the first time and sends it to VIU0.

[0147] Optionally, the light radiation intensity sensor is a sunlight radiation intensity sensor. A sunlight radiation intensity sensor differs from a general light radiation intensity sensor in that its spectral range (e.g., 280-2500nm) covers the main wavelength band of solar radiation. Using a sunlight radiation intensity sensor allows for strict calibration to the spectral distribution of sunlight on the vehicle window (280-2500nm), eliminating interference from invalid wavelength bands.

[0148] This implementation method is simple in design and easy to implement.

[0149] In another possible design, the first light radiation intensity is determined based on the light radiation intensity corresponding to the second window area, vehicle posture information, the current time, and vehicle location information (e.g., longitude and latitude). The vehicle posture information indicates the vehicle's posture. For example, the vehicle posture information includes, but is not limited to, at least one of a heading angle, a pitch angle, or longitude and latitude.

[0150] Combine Figure 2 The control system example given is as follows: a light radiation intensity sensor is installed in the second window area (such as the front windshield window area). The light radiation intensity sensor sends the light radiation intensity of the second window area collected at the first time to VIU0. VIU0 combines the vehicle body posture information, the current time, and the longitude and latitude of the vehicle to calculate the altitude angle between the sun's position and the vehicle. Based on the altitude angle and the light radiation intensity of the second window area, the light radiation intensity of the sunlight in the first window area can be determined. Optionally, a trained machine learning model can be stored in advance in VIU0, and the light radiation intensity corresponding to the second window area, the vehicle body posture information, etc. can be input into the machine learning model (for ease of description, the machine learning model can be called a sunlight correction model), so that the machine learning model outputs the light illumination, which can increase the calculation rate.

[0151] This implementation does not require an additional light radiation intensity sensor to be provided in the first vehicle window area, thus saving hardware costs.

[0152] Optionally, in addition to illuminance and light radiation intensity, light parameters may further include other parameters, such as color temperature (CCT), without limitation. For example, illuminance and color temperature may be used together to distinguish between natural light (e.g., 5,500K) and light from a light-emitting diode (LED) lamp (e.g., 3,000K).

[0153] S102: Setting optical performance parameters of the first vehicle window area according to light parameters.

[0154] Optical performance parameters include, but are not limited to, one or more of the following: transmittance, light blocking rate, chromaticity, refractive index, reflectivity, haze, ultraviolet transmittance, and infrared transmittance. It should be understood that the above are only some possible examples and are not intended to be limiting. Furthermore, the same parameter may have different names.

[0155] Setting the optical performance parameters of the first vehicle window area according to the light parameters includes: adjusting the optical performance parameters of the first vehicle window area according to the light parameters, or keeping the optical performance parameters of the first vehicle window area unchanged according to the light parameters.

[0156] Specifically, if the current optical performance parameters of the first window region are compatible with the lighting conditions represented by the light parameters, the optical performance parameters of the first window region are maintained unchanged. If the current optical performance parameters of the first window region are incompatible with the lighting conditions represented by the light parameters, the optical performance parameters of the first window region are adjusted such that the adjusted optical performance parameters of the first window region are compatible with the lighting conditions represented by the light parameters. The compatibility of the optical performance parameters with the lighting conditions represented by the light parameters can be set by the manufacturer, set by the user, customized for the user, or calculated based on big data, etc., without limitation.

[0157] Optionally, setting the optical performance parameters of the first vehicle window area according to the light parameters includes: sending a control instruction to a controller of the first vehicle window area, the control instruction being used to indicate the optical performance parameters of the first vehicle window area. Figure 2 The control system example given is: after VIU0 obtains the light parameters of the first window area, it determines the optical performance parameters (such as transmittance) adapted to the first window area based on the light parameters, and sends a control instruction to the VIU corresponding to the first window area (such as VIU2) based on the optical performance parameters (optionally, the control instruction includes the optical performance parameters), so that the VIU sets the optical performance parameters of the first window area.

[0158] The embodiment of the present application combines illuminance and light radiation intensity to collaboratively set the optical performance parameters of the first window area. The illuminance can accurately characterize the lighting conditions of low-brightness (or low illumination or low radiation) scenes, so even in low-light environments such as cloudy days, garages, or indoors, the first window area can be triggered to change color in a timely and accurate manner. The light radiation intensity can accurately characterize the energy distribution of sunlight, so even in strong light environments such as sunny days and plateaus, the first window area can be triggered to change color in a timely and accurate manner. The embodiment of the present application can significantly improve the dynamic environmental response capability of the window glass color change function (that is, the ability to perceive environmental changes in real time and autonomously adjust the optical performance parameters of the window), and achieve the effect of intelligently identifying changes in complex lighting scenes and adaptively adjusting the color change of the window glass. For example, the transmittance of the glass on both sides of the car can be automatically adjusted when the scene changes, such as sunrise and sunset, entering and exiting tunnels, turning and U-turning, to ensure the user's visual comfort and body temperature balance.

[0159] Moreover, the implementation of the above solutions does not rely on high-cost materials. For example, it only requires the simple addition of a light intensity sensor or a light radiation intensity sensor, or the use of the vehicle's own hardware and mathematical reasoning, thus saving costs.

[0160] In summary, the embodiments of the present application can achieve both low cost and high adaptability.

[0161] In one possible design, different optical performance parameter setting schemes can be used according to the numerical range of light radiation intensity.

[0162] For example, when the first light radiation intensity is within a first range, the optical performance parameter of the first window area is set to a first optical performance parameter according to the first light illuminance; and / or, when the first light radiation intensity is within a second range, the optical performance parameter of the first window area is set to a second optical performance parameter according to the first light radiation intensity.

[0163] The values in the second range are greater than the values in the first range. For example, the first range is less than the light radiation intensity threshold, and the second range is greater than or equal to the light radiation intensity threshold. For example, when the first light radiation intensity is within the first range, the first window area is not exposed to sunlight, and when the first light radiation intensity is within the second range, the first window area is exposed to sunlight.

[0164] Optionally, the optical performance parameter of the first window area is set as the first optical performance parameter according to the first illuminance. Specifically, it can be: determining the first optical performance parameter corresponding to the first illuminance according to the first illuminance and a first mapping relationship, and the first mapping relationship is a mapping relationship between illuminance and optical performance parameters.

[0165] In a specific implementation, the first mapping relationship may be in the form of a mapping table. For example, Table 3 is a specific example of the first mapping relationship:

[0166] Table 3

[0167] Illumination Light transmittance Interval a1 b1 Interval a2 b2 Interval a3 b3 … …

[0168] It should be understood that different window areas may correspond to the same or different first mapping relationships. For example, the parameters in Table 3 may be the same for all window areas, or the parameters in Table 3 may be different for different window areas.

[0169] For example, under the same light intensity, windows in different positions (such as the sunroof and left and right windows) can be set with different light transmittances, as shown in Table 4.

[0170] Table 4

[0171] Illumination Left and right window transmittance Skylight transmittance Interval a1 b1 c1 Interval a2 b2 c2 Interval a3 b3 c3 … … …

[0172] For another example, different first mapping relationships are used for the cockpit window area and the passenger area window area, respectively, so that the light in the cockpit is brighter, which is convenient for the driver to observe the road conditions and improve driving safety. At the same time, the light in the passenger area is softer, which improves riding comfort.

[0173] For example, different transmittances can be set for different windows based on the position of the people in the car. For example, if there is no passenger on the left side of the rear row but there is a passenger on the right side, the transmittance of the right window can be adjusted according to the light intensity, and the transmittance of the left window can be left unchanged or remain unchanged.

[0174] For another example, different light transmittances can be set for the windows based on the different states of the people in the car. For example, under the same light intensity, the light transmittance of the rear windows when the rear passengers are sleeping can be lower than the light transmittance of the rear windows when the rear passengers are awake.

[0175] Optionally, the optical performance parameter of the first window area is set to a second optical performance parameter according to the first light radiation intensity. Specifically, the second optical performance parameter corresponding to the first light radiation intensity is determined according to the first light radiation intensity and a second mapping relationship, where the second mapping relationship is a mapping relationship between light radiation intensity and optical performance parameters.

[0176] In a specific implementation, the second mapping relationship may be in the form of a mapping table. For example, Table 5 is a specific example of the second mapping relationship:

[0177] Table 5

[0178]

[0179]

[0180] Similarly, different vehicle window areas may correspond to the same or different second mapping relationships. For example, the parameters in Table 5 may be the same for all vehicle window areas, or the parameters in Table 5 may be different for different vehicle window areas.

[0181] For example, under the same light radiation intensity, windows in different positions (such as the sunroof and left and right windows) can be set with different light transmittances.

[0182] For example, different second mapping relationships are used for the window areas of the cockpit and the passenger area, respectively, so that the light in the cockpit is brighter, which is convenient for the driver to observe the road conditions and improve driving safety. At the same time, the light in the passenger area is softer, which improves riding comfort.

[0183] For example, different transmittances can be set for different windows based on the position of the people in the car. For example, if there is no passenger on the left side of the rear row but there is a passenger on the right side, the transmittance of the right window can be adjusted according to the intensity of light radiation, and the transmittance of the left window can be left unchanged or remain unchanged.

[0184] For example, different light transmittances can be set for the windows based on the different states of the people in the car. For example, under the same light radiation intensity, the light transmittance of the rear windows when the rear passengers are sleeping can be lower than the light transmittance of the rear windows when the rear passengers are awake.

[0185] Optionally, when the first illuminance is less than a preset value (such as zero), there is no illuminance or the illuminance is negligible (such as a scene at night without the moon and lights), the light performance parameters of the first window area may not be set or adjusted, or the light performance parameters may be kept at the default values (for example, the transmittance is set to the maximum value).

[0186] It should be understood that the above design is an example of dividing the light radiation intensity into two ranges and using different optical performance parameter setting schemes. In actual applications, the light radiation intensity can be divided into more ranges and different optical performance parameter setting schemes can be used respectively without limitation.

[0187] The above design approach uses different optical performance parameter setting schemes based on the numerical range of light radiation intensity. This allows for the use of different optical performance parameter setting schemes in different scenarios. This allows for precise control of the optical performance parameters of the first window area in each scenario, adapting to complex scene changes. For example, in scenes such as indoors and on cloudy days, the light radiation intensity is low, such as within the first range. Therefore, setting the optical performance parameters of the first window area based on the illuminance can precisely control the color change of the first window area. In scenes such as sunny days and on plateaus, the light radiation intensity is high, such as within the second range. Therefore, setting the optical performance parameters of the first window area based on the light radiation intensity can also precisely control the color change of the first window area.

[0188] In another possible design, the optical performance parameter of the first window area is set to a third optical performance parameter based on the first light radiation intensity, the first illuminance and a third mapping relationship, and the third mapping relationship is a mapping relationship between light radiation intensity, illuminance and optical performance parameters.

[0189] In a specific implementation, the third mapping relationship may be in the form of a mapping table. For example, Table 6 is a specific example of the third mapping relationship:

[0190] Table 6

[0191]

[0192]

[0193] For example, when the first light radiation intensity is in interval A1, there is no sunlight on the first window area (such as indoors, cloudy days, high latitudes, etc.); when the first light radiation intensity is in interval A2, there is sunlight on the first window area but the radiation intensity is weak (such as morning, evening or winter); when the first light radiation intensity is in interval A3, there is sunlight on the first window area and the radiation intensity is high (such as noon, summer or low latitudes, etc.).

[0194] It should be understood that different window areas may correspond to the same or different third mapping relationships. For example, the parameters in Table 6 may be the same for all window areas, or different for different window areas. For example, different third mapping relationships may be used for the cockpit window area and the passenger area window area, respectively. This can make the cockpit brighter, making it easier for the driver to observe road conditions and improve driving safety, while making the passenger area softer and enhancing riding comfort.

[0195] The above design method combines the numerical range of light radiation intensity and the numerical range of illuminance to determine the optical performance parameters. It can also accurately control the optical performance parameters of the first window area in various scenarios to adapt to changes in complex scenarios.

[0196] In one possible design, optical performance parameters of the first vehicle window area are set based on light parameters when a preset condition is met. The preset condition indicates that the lighting conditions in the vehicle's environment are relatively stable. For example, the preset condition may include: the fluctuation amplitude of the light parameters of light incident on the first vehicle window area within a first time range is within a preset amplitude range. The first time range is related to the first time, for example, the first time can be the end time, the start time, or the middle time of the first time range, without limitation.

[0197] When the preset conditions are not met, for example, the fluctuation amplitude of the light parameters of the light incident on the first window area within the first time range exceeds the preset amplitude range, it means that the lighting conditions in the vehicle's environment are unstable. For example, when the vehicle is driving at high speed, the buildings or green plants on the side of the road temporarily block the sunlight, causing the detected light parameters to be unstable. If the adjustment of the optical performance parameters of the first window area is triggered in this case, it will not improve the user experience, but will bring bad results. In addition, there is the problem of wasted power consumption of the vehicle due to frequent adjustment of the optical performance parameters.

[0198] This design can set the optical performance parameters of the first window area according to relatively stable lighting conditions, accurately trigger the color change of the window glass, improve the reliability of the solution, and avoid problems such as frequent triggering of window glass color change leading to power waste and affecting user experience.

[0199] The above examples all take the setting of the optical performance parameters of the first window area as an example. In actual applications, the optical performance parameters of multiple window areas on the vehicle can be set. The setting method of the optical performance parameters of other window areas can refer to the setting method of the optical performance parameters of the first window area.

[0200] It should be understood that the optical performance parameters of different window areas can be controlled jointly or independently without limitation. As a possible example, on a rainy day or indoors, there is no sunlight, and the light radiation intensity of the left and right window areas is both within the first range (indicating no strong sunlight), then the optical performance parameters of the left and right window areas can be set according to the first mapping relationship. As another possible example, in the morning or evening, sunlight shines on the car from one side of the car body, for example, sunlight shines on the left side of the car, so that the light radiation intensity of the left window area is within the second range and the light radiation intensity of the right window area is within the first range, then the optical performance parameters of the left window area can be set according to the second mapping relationship, the optical performance parameters of the right window area can be set according to the first mapping relationship, or only the optical performance parameters of the window area on one side can be adjusted, and so on.

[0201] In order to better understand the technical solution of the present application, several specific examples are listed below, taking the control of the color change of the left and right window glasses of a car as an example.

[0202] Example 1: Set up ambient light sensors and sunlight radiation intensity sensors on the left and right windows.

[0203] The overall implementation process is as follows Figure 4 As shown, when the automatic window tinting function is turned on:

[0204] Perception system: Ambient light sensors on the left and right windows collect light intensity data. Solar radiation intensity sensors on the left and right windows collect light intensity data. The system outputs the ambient light intensity and light intensity of the left and right windows to the control system.

[0205] Control system: monitors environmental changes in real time, such as determining whether the illuminance and light radiation intensity output by the perception system meet the preset conditions. If not, no action is taken and the light transmittance of the windows on each side of the vehicle remains the same. If so, the light radiation intensity output by the perception system is used to further determine whether the current environment is affected by the sunlight radiation intensity factor.

[0206] If there is no influence of sunlight radiation intensity (such as cloudy days, garages, etc., where the light radiation intensity is close to 0), automatic control strategy 1 is executed: the corresponding light performance parameters are queried from calibration database 1. Calibration database 1 stores the correspondence between illuminance and optical performance parameters, i.e., the first mapping relationship, as shown in Table 3 or Table 4 above, and the optical performance parameters of the left and right windows are set according to the queried light performance parameters, such as adjusting the transmittance of the left and right window glass.

[0207] If there is an influence of sunlight radiation intensity (such as outdoors), it is further determined whether the sunlight radiation intensity of the left and right windows exceeds (or reaches) a threshold.

[0208] If the sunlight radiation intensity of any window (such as the left window or the right window) exceeds the threshold (such as a sunny day outside), automatic control strategy 2 is executed for the window: the corresponding light performance parameters are queried from calibration database 2. Calibration database 2 stores the correspondence between light radiation intensity and optical performance parameters, that is, the second mapping relationship, as shown in Table 5 above, and the optical performance parameters of the window (such as the left window or the right window) whose sunlight radiation intensity exceeds the threshold are set according to the queried light performance parameters, such as adjusting the light transmittance of the left window or the right window glass. Of course, if the sunlight radiation intensity of both left and right windows exceeds the threshold, automatic control strategy 2 is executed for both left and right windows. Figure 4 The example in the figure is that the sunlight radiation intensity of a car window exceeds the threshold.

[0209] If the sunlight radiation intensity of the left and right windows does not exceed the threshold (such as when it is cloudy or overcast outside), automatic control strategy 1 is executed.

[0210] In Example 1 above, ambient light sensors and sunlight radiation intensity sensors are installed on the left and right windows to collect light intensity and radiation intensity. Based on the light intensity and radiation intensity of the left and right windows, the control system can identify changes in complex lighting scenes and adaptively adjust the color of the window glass. For example, when the position of sunlight changes, such as when the car enters or exits a basement, turns around at an intersection on a sunny day, or turns, the transmittance of the single-side glass on the left or right side can be automatically adjusted.

[0211] Example 2: Ambient light sensors are set on the left and right windows, and the sunlight correction model is used to calculate the sunlight radiation intensity of the left and right windows.

[0212] The overall implementation process is as follows Figure 5 As shown, when the automatic window tinting function is turned on:

[0213] The perception system collects illumination data using ambient light sensors on the left and right windows. A sunlight intensity sensor on the front windshield collects light intensity data. A sunlight correction model is used to determine the light intensity of the left and right windows based on the light intensity of the windshield and the vehicle's posture. The system then outputs the ambient light intensity and light intensity of the left and right windows to the control system.

[0214] The operations performed by the control system are the same as those in Example 1. Please refer to Example 1 for details and will not be repeated here.

[0215] Example 2 above uses a sunlight correction model to estimate the sunlight radiation intensity of the left and right windows, eliminating the need for sunlight radiation intensity sensors deployed on the left and right windows, thus saving hardware costs.

[0216] Example 3: Sunlight radiation intensity sensors are installed on the left and right windows, and the illumination of the left and right windows is calculated based on the sensitivity.

[0217] The overall implementation process is as follows Figure 6 As shown, when the automatic window tinting function is turned on:

[0218] The perception system uses sunlight intensity sensors on the left and right windows to collect light radiation intensity. The surround-view camera collects light sensitivity on the left and right windows and uses a sensitivity-to-illuminance conversion model to determine the illumination on the left and right windows. The system then outputs the illumination and light intensity of the left and right windows in the current environment to the control system.

[0219] The operations performed by the control system are the same as those in Example 1. Please refer to Example 1 for details and will not be repeated here.

[0220] In Example 3 above, the illumination of the left and right windows is calculated based on the light sensitivity. The light sensitivity can be obtained based on the vehicle's surround-view camera, eliminating the need to deploy ambient light sensors on the left and right windows, thus saving hardware costs.

[0221] Of course, the above examples 1 to 3 are merely possible examples of this application, and there may be more examples without limitation.

[0222] Based on the vehicle window control method described above, the present application can also provide a control device, which can be used to execute the above vehicle window control method. The relevant features can be found in the above method embodiment and will not be repeated here.

[0223] In one possible implementation, see Figure 7 , which shows a possible structural diagram of a control device. The control device 700 may include various units or modules for implementing the above method.

[0224] like Figure 7 As shown, the control device 700 may include an acquisition unit 710 and a control unit 720. The acquisition unit 710 and the control unit 720 may be used to implement Figures 3 to 6 The method in the embodiment shown.

[0225] For example, the control device 700 executes the above Figure 3 In the method shown, the acquisition unit 710 is used to obtain light parameters of light incident on a first window area of the vehicle at a first time, the light parameters including a first light illuminance and a first light radiation intensity; the control unit 720 is used to set optical performance parameters of the first window area according to the light parameters.

[0226] In addition, it should be noted that the aforementioned acquisition unit 710 and control unit 720 can be implemented as virtual modules, for example, the acquisition unit 710 and control unit 720 are implemented as software functional units or virtual devices. Alternatively, the acquisition unit 710 and control unit 720 can also be implemented as physical devices, for example, the acquisition unit 710 and control unit 720 are integrated processors, microprocessors, or integrated circuits.

[0227] The division of units in the embodiments of the present application is illustrative and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of the present application may be integrated into a single processor, or may exist physically separately, or two or more units may be integrated into a single module. The aforementioned integrated modules may be implemented in the form of hardware or software functional modules.

[0228] As a possible example, Figure 8 FIG. 7 shows an example of a possible software system architecture. The software system may be deployed in a control device 700 and includes the following functional modules:

[0229] The information conversion and filtering module is used to convert external input light parameters such as illuminance and light radiation intensity into data formats that can be processed by the software system, and to determine whether the light parameters meet the preset conditions. If the preset conditions are met, the processed light parameters are sent to the automatic control logic processing module, which triggers the automatic control logic processing module to control the color change of the vehicle window glass.

[0230] The configuration management module is used to configure the automatic control logic processing module to control the rules for changing the color of the vehicle window glass, such as the first mapping relationship, the second mapping relationship or the third mapping relationship listed above.

[0231] The automatic control logic processing module is used to determine the light performance parameters of the windows that are adapted to the current environment, such as transmittance, based on the rules configured by the configuration management module and the light parameters of the current environment, and send a glass transmittance instruction to the corresponding window controller (such as VIU1 or VIU2), so that the window controller controls the transmittance of the window to adapt to the transmittance of the current environment according to the glass transmittance instruction, thereby realizing the color change of the window glass.

[0232] certainly, Figure 8 This is just one possible example. In actual applications, there may be other ways to divide the modules of the software architecture and implement specific functions.

[0233] In another possible implementation, see Figure 9 , showing another possible structural diagram of the control device. For example, the control device 900 can be a chip or a chip system. Optionally, in the embodiment of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices.

[0234] The control device 900 can be used to implement the functions of the control device or its modules (such as processors, chips or chip systems) described in the above embodiments. The control device 900 may include at least one processor 910, and at least one processor 910 is coupled to a memory. Optionally, the memory may be located within the control device 900, the memory may be integrated with the processor, or the memory may be located outside the control device 900. For example, the control device 900 may also include at least one memory 920. The at least one memory 920 stores the necessary computer programs (or instructions) and / or data for implementing any of the above embodiments; the at least one processor 910 can execute the computer programs (or instructions) and / or data stored in the at least one memory 920 to complete the method in any of the above embodiments.

[0235] The control device 900 may also include a communication interface 930, through which the control device 900 can exchange information with other devices. Exemplarily, the communication interface 930 may be a transceiver, a circuit, a bus, a module, a pin, or other types of communication interfaces. When the control device 900 is a chip-type device or circuit, the communication interface 930 in the control device 900 may also be an input-output circuit that can input information (or receive information) and output information (or send information). The processor is an integrated processor or microprocessor or integrated circuit or logic circuit, and the processor can determine output information based on input information.

[0236] The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which can be electrical, mechanical, or other forms, and is used for information exchange between devices, units, or modules. The processor 910 may operate in conjunction with the memory 920 and the communication interface 930. The specific connection medium between the processor 910, memory 920, and communication interface 930 is not limited in the embodiments of the present application.

[0237] Optional, see Figure 9 The processor 910, the memory 920, and the communication interface 930 are interconnected via a bus. The bus may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 9 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0238] In the embodiments of the present application, the processor 910 can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of the present application can be directly implemented as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor.

[0239] In an embodiment of the present application, the memory 920 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or a volatile memory (volatile memory), such as a random-access memory (RAM). The memory 920 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 920 in the embodiment of the present application may also be a circuit or any other device that can implement a storage function, for storing program instructions and / or data.

[0240] Based on the above, the present application further provides a control system, including the above control device. Optionally, a sensor may also be included. The structure of the control device can be found in the above, and will not be repeated here.

[0241] Based on the above content, the present application also provides a vehicle, including the above control device, or including the above control system.

[0242] Based on the above, this application further provides a computer-readable storage medium storing instructions that, when executed, implement the method provided in any of the above method embodiments. The computer-readable storage medium may include any medium capable of storing program code, such as a USB flash drive, a mobile hard drive, a read-only memory, a random access memory, a magnetic disk, or an optical disk.

[0243] Based on the above content, the present application also provides a computer program product, which includes: a computer program (also called code, or instructions), which, when the computer program runs on a computer, enables the computer to execute the method provided by any of the above method embodiments.

[0244] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, compact disc read-only memory (CD-ROM), optical storage, etc.) containing computer-usable program code.

[0245] The present application is described with reference to the flowcharts and / or block diagrams of the methods, apparatus (system), and computer program products according to the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0246] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0247] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus so that a series of operational steps are executed on the computer or other programmable apparatus to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable apparatus to implement the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

Claims

1. A vehicle window control method, characterized in that: include: Acquire light parameters of light incident on a first window area of a vehicle at a first time, the light parameters including a first light illuminance and a first light radiation intensity; The optical performance parameters of the first vehicle window area are set according to the light parameters.

2. The method according to claim 1, wherein The step of setting the optical performance parameters of the first vehicle window area according to the light parameters includes: When the first light radiation intensity is within the first range, setting the optical performance parameter of the first vehicle window area to a first optical performance parameter according to the first light illuminance; and / or, When the first light radiation intensity is in the second range, the optical performance parameter of the first vehicle window area is set to a second optical performance parameter according to the first light radiation intensity.

3. The method according to claim 2, wherein The step of setting the optical performance parameter of the first window area as a first optical performance parameter according to the first light illumination includes: The first optical performance parameter corresponding to the first illuminance is determined according to the first illuminance and a first mapping relationship, where the first mapping relationship is a mapping relationship between illuminance and optical performance parameter.

4. The method according to claim 2, wherein The step of setting the optical performance parameter of the first vehicle window area to a second optical performance parameter according to the first light radiation intensity includes: The second optical performance parameter corresponding to the first optical radiation intensity is determined according to the first optical radiation intensity and a second mapping relationship, where the second mapping relationship is a mapping relationship between optical radiation intensity and optical performance parameters.

5. The method according to any one of claims 2 to 4, characterized in that The first range is a range smaller than a light radiation intensity threshold, and the second range is a range greater than or equal to the light radiation intensity threshold.

6. The method according to claim 1, wherein The step of setting the optical performance parameters of the first vehicle window area according to the light parameters includes: The optical performance parameter of the first window area is set to a third optical performance parameter according to the first light radiation intensity, the first illuminance and a third mapping relationship, where the third mapping relationship is a mapping relationship between light radiation intensity, illuminance and optical performance parameters.

7. The method according to any one of claims 1 to 6, wherein: The step of setting the optical performance parameters of the first vehicle window area according to the light parameters includes: When a preset condition is met, setting optical performance parameters of the first vehicle window area according to the light parameters; The preset condition includes: a fluctuation amplitude of a light parameter of light incident on the first vehicle window area within a first time range is within a preset amplitude range, and the first time range is related to the first time.

8. The method according to any one of claims 1 to 7, wherein: The obtaining of light parameters of light incident on a first window area of the vehicle at a first time includes: Acquiring the first illuminance based on an illuminance sensor in the first vehicle window area; or The sensitivity of the first vehicle window area is acquired based on an image sensor, and the first illuminance is determined according to the sensitivity of the first vehicle window area.

9. The method according to any one of claims 1 to 8, wherein The obtaining of light parameters of light incident on a first window area of the vehicle at a first time includes: Acquiring the first light radiation intensity based on a light radiation intensity sensor in the first vehicle window area; or The first light radiation intensity is determined according to the light radiation intensity corresponding to the second window area, the vehicle body posture information, the current time and the position information of the vehicle.

10. The method according to claim 9, wherein The vehicle body posture information includes at least one of a heading angle, a pitch angle, or longitude and latitude.

11. The method according to claim 9 or 10, wherein: The second window area is the front windshield window area.

12. The method according to any one of claims 1 to 11, wherein: The first window area is one or more of the following: Left rear side window area; Right rear side window area; Left front side window area; right front side window area; rear windshield window area; Skylight area; Triangular window area.

13. The method according to any one of claims 1 to 12, wherein: The optical performance parameters of the first window area are optical performance parameters of the photochromic glass on the first window area, and the optical performance parameters include one or more of the following: Light transmittance; Shading rate; chroma; Refractive index; reflectivity; haze; UV transmittance; Infrared transmittance.

14. The method according to any one of claims 1 to 13, wherein: The step of setting the optical performance parameters of the first vehicle window area according to the light parameters includes: A control instruction is sent to a controller of the first vehicle window area, where the control instruction is used to indicate an optical performance parameter of the first vehicle window area.

15. A vehicle window control system, characterized in that: include: at least one sensor for collecting environmental data; A control device is used to obtain light parameters of light incident on a first window area of the vehicle at a first time based on the environmental data, the light parameters including a first light illuminance and a first light radiation intensity; and set optical performance parameters of the first window area based on the light parameters.

16. The system according to claim 15, wherein: The control device is used to: When the first light radiation intensity is within the first range, setting the optical performance parameter of the first vehicle window area to a first optical performance parameter according to the first light illuminance; and / or, When the first light radiation intensity is in the second range, the optical performance parameter of the first vehicle window area is set to a second optical performance parameter according to the first light radiation intensity.

17. The system according to claim 16, wherein: The control device is used to: The first optical performance parameter corresponding to the first illuminance is determined according to the first illuminance and a first mapping relationship, where the first mapping relationship is a mapping relationship between illuminance and optical performance parameter.

18. The system of claim 16, wherein: The control device is used to: The second optical performance parameter corresponding to the first optical radiation intensity is determined according to the first optical radiation intensity and a second mapping relationship, where the second mapping relationship is a mapping relationship between optical radiation intensity and optical performance parameters.

19. The system according to any one of claims 16 to 18, wherein: The first range is a range smaller than a light radiation intensity threshold, and the second range is a range greater than or equal to the light radiation intensity threshold.

20. The system of claim 15, wherein: The control device is used to: The optical performance parameter of the first window area is set to a third optical performance parameter according to the first light radiation intensity, the first illuminance and a third mapping relationship, where the third mapping relationship is a mapping relationship between light radiation intensity, illuminance and optical performance parameters.

21. The system according to any one of claims 15 to 20, wherein: The control device is used to: When a preset condition is met, setting optical performance parameters of the first vehicle window area according to the light parameters; The preset condition includes: a fluctuation amplitude of a light parameter of light incident on the first vehicle window area within a first time range is within a preset amplitude range, and the first time range is related to the first time.

22. The system according to any one of claims 15 to 21, wherein: The sensor includes an illuminance sensor provided in the first vehicle window area, and the environmental data includes the first illuminance; or The sensor includes an image sensor arranged in the first vehicle window area, the environmental data includes the sensitivity of the first vehicle window area, and the control device is used to determine the first light illumination according to the sensitivity of the first vehicle window area.

23. The system according to any one of claims 15 to 22, wherein: The sensor includes a light radiation intensity sensor provided in the first vehicle window area, and the environmental data includes the first light radiation intensity; or The sensor includes a light radiation intensity sensor arranged in a second window area, the environmental data includes the light radiation intensity corresponding to the second window area, and the control device is used to determine the first light radiation intensity based on the light radiation intensity corresponding to the second window area, the vehicle body posture information, the current time and the vehicle position information.

24. The system of claim 23, wherein: The vehicle body posture information includes at least one of a heading angle, a pitch angle, or longitude and latitude.

25. The system according to claim 23 or 24, characterized in that The second window area is the front windshield window area.

26. The system according to any one of claims 15 to 25, wherein: The first window area is one or more of the following: Left rear side window area; Right rear side window area; Left front side window area; right front side window area; rear windshield window area; Skylight area; Triangular window area.

27. The system according to any one of claims 15 to 26, wherein: The optical performance parameters include one or more of the following: Light transmittance; Shading rate; chroma; Refractive index; reflectivity; haze; UV transmittance; Infrared transmittance.

28. The system according to any one of claims 15 to 27, wherein: The control device is used to: A control instruction is sent to a controller of the first vehicle window area, where the control instruction is used to indicate an optical performance parameter of the first vehicle window area.

29. A control device, characterized in that: The method comprises modules or units for executing the method according to any one of claims 1 to 14.

30. A control device, characterized in that: include: A processor, wherein the processor is coupled to a memory, the memory is used to store a computer program or instructions, and the processor is used to execute the computer program or instructions to implement the method according to any one of claims 1 to 14.

31. A means of transport, characterized in that: The vehicle window control system comprises the vehicle window control system according to any one of claims 15 to 28, and / or the control device according to claim 29 or 30.

32. A computer-readable storage medium, characterized in that The storage medium stores a computer program or instructions, and when the computer program or instructions are executed, the method according to any one of claims 1 to 14 is implemented.

33. A computer program product, characterized in that The computer program product comprises instructions, which, when executed, implement the method of any one of claims 1 to 14 .

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