Anti-dazzle method and device for rearview mirror, interior rearview mirror and vehicle

Abstract

The application provides a rearview mirror anti-dazzling method, device, vehicle interior rearview mirror and vehicle. The method comprises the following steps: determining a proportional coefficient according to a front light sensing value of a vehicle interior rearview mirror; wherein the proportional coefficient is negatively correlated with the front light sensing value; determining a light sensing coefficient according to a rear light sensing value and the front light sensing value of the vehicle interior rearview mirror; determining a current light sensing multiple based on the light sensing coefficient, the proportional coefficient and a preset accuracy multiple; determining a target reflectivity of the vehicle interior rearview mirror according to the current light sensing multiple, and adjusting the reflectivity of the vehicle interior rearview mirror based on the target reflectivity; wherein the front light sensing value is a light sensing value in a vehicle head direction, and the rear light sensing value is a light sensing value in a vehicle tail direction. Through the technical scheme, the reflectivity of the vehicle interior rearview mirror is adjusted in combination with environmental brightness, the display effect of the vehicle interior rearview mirror is improved, and the driving safety is improved.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and in particular to a rearview mirror anti-glare method, device, in-vehicle rearview mirror, and vehicle. Background Technology

[0002] Current methods for preventing glare in rearview mirrors involve using two light sensors at the front and rear of the mirror to obtain the difference or ratio of light intensity between the front and rear, and then automatically adjusting the reflectivity of the rearview mirror.

[0003] However, in low-light environments, even slight light can cause a significant change in the reflectivity of the rearview mirror, leading to misadjustment of the mirror's reflectivity. This can affect the mirror's display quality and even compromise driving safety. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a rearview mirror anti-glare method, device, vehicle interior rearview mirror and vehicle, so as to adjust the reflectivity of the vehicle interior rearview mirror in combination with the ambient brightness, improve the display effect of the vehicle interior rearview mirror and improve driving safety.

[0005] To achieve the above objectives, this application provides a rearview mirror anti-glare method, the method comprising:

[0006] A scaling factor is determined based on the forward light sensitivity value of the rearview mirror inside the vehicle; wherein the scaling factor is negatively correlated with the forward light sensitivity value. The light sensitivity coefficient is determined based on the rear light sensitivity value and the front light sensitivity value of the rearview mirror. The current photosensitivity is determined based on the photosensitivity coefficient, the scaling factor, and the preset precision factor; Based on the current photosensitive magnification, determine the target reflectivity of the rearview mirror, and adjust the reflectivity of the rearview mirror based on the target reflectivity; The front photosensitive value is the photosensitive value in the direction of the front of the vehicle, and the rear photosensitive value is the photosensitive value in the direction of the rear of the vehicle.

[0007] To achieve the above objectives, this application also provides a rearview mirror anti-glare device, which includes: A scaling factor determination module is used to determine a scaling factor based on the forward light-sensing value of the rearview mirror inside the vehicle; wherein the scaling factor is negatively correlated with the forward light-sensing value. A photosensitive coefficient determination module is used to determine the photosensitive coefficient based on the rear photosensitive value and the front photosensitive value of the rearview mirror. The current photosensitive factor determination module is used to determine the current photosensitive factor based on the photosensitive coefficient, the proportional coefficient, and the preset precision factor; The reflectivity adjustment module is used to determine the target reflectivity of the rearview mirror based on the current photosensitive magnification, and to adjust the reflectivity of the rearview mirror based on the target reflectivity. The front photosensitive value is the photosensitive value in the direction of the front of the vehicle, and the rear photosensitive value is the photosensitive value in the direction of the rear of the vehicle.

[0008] To achieve the above objectives, this application also provides a vehicle rearview mirror, including a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor, when executing the program, implements the rearview mirror anti-glare method as provided in any embodiment of this application.

[0009] For the purposes described above, this application also provides a vehicle, characterized in that the vehicle includes an interior rearview mirror as provided in any embodiment of this application.

[0010] As can be seen from the above, the rearview mirror anti-glare method provided in this application determines a scaling factor based on the front light sensitivity value of the rearview mirror to measure the ambient brightness. Then, based on the rear and front light sensitivity values ​​of the rearview mirror, a light sensitivity coefficient is determined. Based on the light sensitivity coefficient, scaling factor, and preset precision multiplier, the current light sensitivity multiplier is determined to adaptively adjust the current light sensitivity multiplier in combination with the ambient brightness. Based on the current light sensitivity multiplier, the target reflectivity of the rearview mirror is determined, and the reflectivity of the rearview mirror is adjusted based on the target reflectivity. This achieves the goal of adjusting the reflectivity of the rearview mirror in combination with the ambient brightness, thereby improving the anti-glare effect and safety of the rearview mirror. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 A flowchart of a rearview mirror anti-glare method provided in this application embodiment; Figure 2 A flowchart illustrating another rearview mirror anti-glare method provided in this application embodiment; Figure 3 This is a schematic diagram of the structure of a rearview mirror anti-glare device provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of a rearview mirror anti-glare system provided in an embodiment of this application; Figure 5 This is a schematic diagram of the hardware structure of a vehicle rearview mirror provided in an embodiment of this application. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0014] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0015] Figure 1 The flowchart illustrates a rearview mirror anti-glare method provided in this application embodiment, primarily applicable to situations where the reflectivity of a vehicle's rearview mirror needs adjustment. Figure 1 As shown, the method may specifically include the following steps: S110. Determine the scaling factor based on the forward light sensitivity value of the rearview mirror inside the vehicle.

[0016] The front light sensitivity value refers to the light sensitivity value in the direction of the vehicle's front. This front light sensitivity value can be obtained through a light sensor mounted on the rearview mirror's housing. The light sensitivity value can be understood as light intensity. The scaling factor is used to adjust the current light sensitivity level corresponding to different front light sensitivity values; the scaling factor is negatively correlated with the front light sensitivity value.

[0017] Specifically, the proportionality coefficient is obtained by inversely calculating the previous photosensitive value.

[0018] For example, the range of the scaling factor K is defined as 1~15 (example value range). According to the relationship between K value and the previous photosensitive value: K[1~15] corresponds to the previous photosensitive value[0~140]. The two are inversely proportional. The following formula is applied, and the K value is calculated as follows: K=(150-previous photosensitive value) / 10.

[0019] Based on the above example, the scaling factor can be determined according to the forward light sensitivity value of the rearview mirror in the vehicle in the following way: In response to the rearview mirror being in anti-glare mode, the activation status of the light source corresponding to the rearview mirror is determined; in response to the activation status being deactivated, the scaling factor is determined based on the forward light sensitivity value of the rearview mirror.

[0020] The anti-glare mode is a usage mode for the rearview mirror. In anti-glare mode, the reflectivity of the rearview mirror can be adjusted according to the light sensitivity, automatically reducing reflectivity in the event of strong glare to improve driving safety. Optionally, the rearview mirror also includes a streaming media mode. This mode uses real-view display technology to combine camera functionality with a traditional rearview mirror, projecting a real-time image of the rear of the vehicle onto the mirror surface. The light source corresponding to the rearview mirror is a light source that affects the light sensitivity of the rearview mirror, such as a reading light located above the rearview mirror. The activation status describes whether the light source is on or off, and can include "on" and "off".

[0021] Specifically, when the rearview mirror is in anti-glare mode, the activation status of the light source corresponding to the rearview mirror that might affect its light sensitivity is determined to adaptively adjust the mirror's reflectivity. When the light source corresponding to the rearview mirror is not activated, it can be determined that the light source will not affect the mirror. Therefore, based on the mirror's forward light sensitivity value, a scaling factor can be determined, and thus the target reflectivity of the rearview mirror can be obtained for adjustment, achieving the anti-glare effect.

[0022] Optionally, if the rearview mirror is not in anti-glare mode, for example, if the rearview mirror is in streaming mode, the process will exit until the selection of the rearview mirror as anti-glare mode is triggered, and then the operation of determining the activation status of the light source corresponding to the rearview mirror will be performed in response to the rearview mirror being in anti-glare mode.

[0023] Optionally, in response to the activation state of the light source corresponding to the rearview mirror, the target reflectivity is determined to be a preset first reflectivity, and the reflectivity of the rearview mirror is adjusted based on the target reflectivity.

[0024] The preset first reflectivity is the highest reflectivity that the rearview mirror can achieve in anti-glare mode.

[0025] Specifically, when the light source corresponding to the rearview mirror is in the "on" state, it can be determined that the light source corresponding to the rearview mirror will affect the display of the rearview mirror. Therefore, in order to ensure the display effect of the rearview mirror, the reflectivity of the rearview mirror is adjusted to the preset first reflectivity. The preset first reflectivity can be understood as the highest reflectivity that the rearview mirror can achieve in anti-glare mode, such as 50%.

[0026] S120. Determine the light sensitivity coefficient based on the rear and front light sensitivity values ​​of the rearview mirror inside the vehicle.

[0027] The rear light sensitivity value is the light sensitivity value in the direction of the rear of the vehicle. The rear light sensitivity value can be obtained through a light sensor mounted on the mirror surface of the rearview mirror. The photosensitive coefficient is the ratio of the rear light sensitivity value to the front light sensitivity value.

[0028] Specifically, the ratio of the rear light sensitivity value to the front light sensitivity value of the rearview mirror is used as the light sensitivity coefficient.

[0029] S130. Determine the current sensitivity based on the sensitivity coefficient, scaling factor, and preset precision factor.

[0030] The current ISO is a numerical value used to describe the relationship between the current front ISO value and the back ISO value. The preset precision is a pre-set value used to adjust the precision of the current ISO, such as 10.

[0031] Specifically, the current sensitivity is determined by multiplying the sensitivity coefficient, the scaling factor, and the preset precision factor.

[0032] For example, the current sensitivity is 10. Post-sensitivity K 35% of the front light sensitivity value; where 10 is the preset precision multiplier, which is adjustable, and 35% is the preset parameter, which is adjustable.

[0033] S140. Determine the target reflectivity of the rearview mirror based on the current photosensitive magnification, and adjust the reflectivity of the rearview mirror based on the target reflectivity.

[0034] The target reflectivity is a reflectivity value used to adjust the reflectivity of the rearview mirror inside the vehicle, determined by combining the front and rear light sensitivity values.

[0035] Specifically, based on a pre-established model or function describing the relationship between the current photosensitive index and the target reflectivity, the current photosensitive index is processed to obtain the target reflectivity of the rearview mirror. Then, the reflectivity of the rearview mirror is adjusted based on the target reflectivity.

[0036] For example, the target reflectivity of the rearview mirror can be determined based on the current photosensitive magnification by processing it with a pre-set formula or model. For instance, a machine learning model can be trained using the sample photosensitive magnification as input and the sample reflectivity as output to obtain a model for determining the target reflectivity. Alternatively, the target reflectivity can be determined based on the current photosensitive magnification.

[0037] Based on the above example, the target reflectivity of the rearview mirror can be determined according to the current photosensitive magnification in the following way: When the current photosensitive factor is less than the first factor, the target reflectance is determined to be a preset first reflectance. When the current photosensitive factor is greater than or equal to the first factor and less than the second factor, the target reflectance corresponding to the current photosensitive factor is determined based on the preset correspondence between photosensitive factor and reflectance. When the current photosensitive factor is greater than or equal to the second factor, the target reflectance is determined to be the preset second reflectance.

[0038] Here, the preset first reflectivity is greater than the preset second reflectivity. The preset second reflectivity is the lowest reflectivity that the rearview mirror can achieve in anti-glare mode. The first multiplier is a threshold used to determine whether the target reflectivity is at the current photosensitive multiplier of the preset first reflectivity, and the second multiplier is a threshold used to determine whether the target reflectivity is at the current photosensitive multiplier of the preset second reflectivity. The preset photosensitive multiplier and reflectivity correspondence describes the functional relationship between photosensitive multiplier and reflectivity.

[0039] Specifically, the target reflectivity is determined in different ways based on the relationship between the current magnification, the first magnification, and the second magnification. If the current magnification is less than the first magnification, it indicates that the current rearview mirror has a low requirement for anti-glare; therefore, the target reflectivity is determined to be the preset first reflectivity. If the current magnification is greater than or equal to the first magnification but less than the second magnification, it indicates that the current rearview mirror requires anti-glare; therefore, the current magnification is input into the preset mapping between magnification and reflectivity to determine the target reflectivity corresponding to the current magnification. If the current magnification is greater than or equal to the second magnification, it indicates that the current rearview mirror has the highest requirement for anti-glare; therefore, the target reflectivity is determined to be the preset second reflectivity to maximize the anti-glare function.

[0040] Based on the above example, the preset relationship between photosensitivity and reflectivity can be determined in the following way: Based on the first multiple, the second multiple, the preset first reflectivity, and the preset second reflectivity, determine the correspondence between the preset photosensitive multiple and the reflectivity.

[0041] Specifically, since the first multiple corresponds to the preset first reflectance and the second multiple corresponds to the preset second reflectance, the two correspondences can be substituted into the preset function relationship to obtain the preset correspondence between the photosensitive multiple and the reflectance.

[0042] Optionally, the preset relationship between photosensitive index and reflectance can be a preset functional relationship, a preset model relationship, or a one-to-one preset relationship. The preset functional relationship can be a linear function, etc., which can be determined according to actual needs. The preset model relationship can be a convolutional neural network model, etc., which can be determined according to actual needs. Regardless of whether it is a preset functional relationship or a preset model relationship, the input is the current photosensitive index, and the output is the target reflectance.

[0043] For example, the brightness ratio obtained from the mirror light sensor (rear light sensor value) and the rear shell light sensor (front light sensor value) of the rearview mirror is linearly adjusted according to a certain algorithm, specifically by increasing or decreasing it. The core of this algorithm is: using the front light sensor value as the ambient brightness, the lower the ambient brightness, the smaller the decrease in reflectivity caused by the same brightness ratio. The following is a specific example of the algorithm, where the parameter values ​​are variable.

[0044] First, define the scaling factor K as ranging from 1 to 15 (example range). Based on the relationship between K and the previous photosensitive value: K [1~15] corresponds to the previous photosensitive value [0~140], and the two are inversely proportional. Applying the following formula, the converted K value is calculated as follows: K = (150 - previous photosensitive value) / 10; Therefore, the current photosensitive factor = 10. Post-sensitivity K 35% / current sensitivity value; where 10 is the preset precision multiplier, which is adjustable, and 35% is the preset parameter, which is also adjustable. After setting the current sensitivity multiplier, compare it with the first multiplier (25 in this example, which can be adjusted according to actual needs) and the second multiplier (60 in this example, which can be adjusted according to actual needs) to determine the target reflectivity. If the current sensitivity multiplier is <25, the target reflectivity is 45% (preset first reflectivity, i.e., maximum anti-glare rate); if the current sensitivity multiplier is ≥60, the anti-glare function is enabled, and the target reflectivity is 5% (preset second reflectivity, i.e., minimum anti-glare rate); if the current sensitivity multiplier is ≥25 and <60, based on the relationship between the reflectivity parameter and the previous and current sensitivity values ​​(the preset correspondence between sensitivity multipliers and reflectivity): Target reflectivity = (515 – 8) The target reflectivity is determined by dividing the current photosensitive value by 7. This algorithm achieves a sensitivity to the decrease in reflectivity of the rearview mirror as ambient brightness (front photosensitive value) decreases.

[0045] Normally, the ratio of rear light sensitivity to front light sensitivity exceeds a certain threshold, triggering anti-glare mode and reducing the reflectivity of the rearview mirror. However, this approach has a drawback: in very low ambient light conditions (front light sensitivity approaching 0), the weak light from the rear can cause the ratio to become too high (exceeding the preset threshold), leading to false triggering of anti-glare mode. The algorithm described above changes the anti-glare threshold from a static parameter to a parameter that dynamically changes in a linear inverse direction with ambient light. The lower the ambient light, the higher the threshold required to trigger anti-glare mode, thus resolving the issue of false triggering of anti-glare mode in low ambient light conditions. This addresses the problem of even reduced visibility caused by low light affecting the anti-glare state.

[0046] The rearview mirror anti-glare method provided in this embodiment determines a scaling factor based on the front light sensitivity value of the rearview mirror to measure the ambient brightness. Then, it determines a light sensitivity coefficient based on the rear and front light sensitivity values ​​of the rearview mirror. Based on the light sensitivity coefficient, scaling factor, and preset accuracy multiplier, it determines the current light sensitivity multiplier to adaptively determine the current light sensitivity multiplier in combination with the ambient brightness. Based on the current light sensitivity multiplier, it determines the target reflectivity of the rearview mirror and adjusts the reflectivity of the rearview mirror based on the target reflectivity. This achieves the goal of adjusting the reflectivity of the rearview mirror in combination with the ambient brightness, thereby improving the anti-glare effect and safety of the rearview mirror.

[0047] Figure 2 A flowchart of another rearview mirror anti-glare method provided in this application embodiment is included. Based on the above embodiments, optionally, a triggering method is described that determines a proportional coefficient based on the forward light sensitivity value of the rearview mirror. The method also includes adjusting the target reflectivity when the vehicle is in reverse, and an illustrative example is provided. Explanations of terms that are the same as or corresponding to those in the above embodiments are not repeated here. Figure 2 As shown, the method may specifically include the following steps: S210, in response to the rearview mirror being in anti-glare mode, determines whether to enter nighttime based on the current time, sunrise time, and sunset time of the day.

[0048] The sunrise and sunset times for the day can be obtained from online weather forecasts for the current region, or they can be preset sunrise and sunset times corresponding to the season.

[0049] Specifically, with the rearview mirror in anti-glare mode, you can first determine if it is nighttime. This is because the anti-glare mode adjusts the reflectivity of the rearview mirror at night, but does not require adjustment during the day. Therefore, first determine the sunrise and sunset times of the day, and then determine if the current time is between sunrise and sunset. If it is, it indicates that it is currently daytime and nighttime has not yet begun; if not, it indicates that it is currently nighttime.

[0050] S220. When it is determined that night has arrived and the front light sensitivity value is less than the light sensitivity threshold, determine the activation status of the light source corresponding to the rearview mirror inside the vehicle.

[0051] The light sensitivity threshold is a pre-set light intensity used to determine whether the ambient brightness is too low.

[0052] Specifically, after determining that it is nighttime based on the time, the front light sensor value is further considered as the ambient brightness. If the front light sensor value is less than the light sensor threshold, it can be determined that the ambient brightness around the vehicle is low, which meets the conditions for triggering anti-glare, so as to further determine the activation status of the light source corresponding to the rearview mirror.

[0053] Understandably, determining whether to enter night mode (i.e., the subsequent steps of determining the activation status of the light source corresponding to the rearview mirror) can include the following two methods: ① The cockpit system, such as HUT, determines that it is in night mode; ② The rearview mirror itself determines that it is in night mode. If both of these methods simultaneously determine that it is in night mode, then night mode is confirmed. The cockpit system's night mode determination comes from time determination or from other vehicle status signals, such as whether the parking lights (body lights) are on. For example, based on the current time, sunrise time, and sunset time, it determines whether it is in night mode by acquiring the light signal from the body lights and determining whether the body lights are on. If they are on, it is night mode. The rearview mirror's night mode determination comes from the brightness value obtained by the rear-view mirror's light sensor, i.e., the front light sensor value. If the front light sensor value is less than the light sensor threshold, it is determined that it is in night mode.

[0054] Based on the above example, after determining whether night has fallen, if it is determined that night has not fallen or night has fallen and the previous light sensitivity value is greater than or equal to the light sensitivity threshold, the target reflectivity can be determined in the following way: In response to the determination that it is not nighttime, the target reflectance is determined to be a preset first reflectance; In response to determining that night has arrived and that the previous light sensitivity value is greater than or equal to the light sensitivity threshold, the target reflectance is determined to be a preset first reflectance.

[0055] Specifically, if it is determined that it is not nighttime, it indicates that the current time is daytime, and there is no need to trigger subsequent reflectivity adjustment. Therefore, the target reflectivity is determined to be a preset first reflectivity, so that the reflectivity of the rearview mirror can be adjusted based on the target reflectivity. If it is determined that it is nighttime and the front light sensitivity value is greater than or equal to the light sensitivity threshold, it indicates that the current time is nighttime, but the surrounding environment is bright, and there is no need to trigger subsequent reflectivity adjustment. Therefore, the target reflectivity is determined to be a preset first reflectivity, so that the reflectivity of the rearview mirror can be adjusted based on the target reflectivity.

[0056] S230, in response to the startup state being not started, determines the scaling factor based on the front light sensitivity value of the rearview mirror; determines the light sensitivity factor based on the rear light sensitivity value and the front light sensitivity value of the rearview mirror; determines the current light sensitivity factor based on the light sensitivity factor, the scaling factor, and the preset accuracy factor; determines the target reflectivity of the rearview mirror based on the current light sensitivity factor, and adjusts the reflectivity of the rearview mirror based on the target reflectivity.

[0057] S240, in response to the vehicle being in a reversing state, determines the target reflectivity as a preset first reflectivity, and adjusts the reflectivity of the rearview mirror based on the target reflectivity.

[0058] Specifically, the reversing status is determined by the vehicle's gear shift system. Based on the vehicle's gear shift system, it can be determined whether the vehicle is in a reversing state, i.e., in reverse gear (R). If so, it indicates that the vehicle is currently reversing. Adjusting the reflectivity of the rearview mirror may result in an inability to see the situation behind the vehicle, posing a safety hazard. Therefore, the target reflectivity is determined to be the preset first reflectivity, and the reflectivity of the rearview mirror is adjusted based on the target reflectivity.

[0059] For example, the vehicle rearview mirror system receives the vehicle's gear position status via a hard wire or CAN bus. When it is determined to be in reverse (R) gear, it exits the state of adjusting the target reflectivity based on the front and rear light values ​​and maintains the highest reflectivity, i.e., the preset first reflectivity.

[0060] The rearview mirror anti-glare method provided in this embodiment determines whether it is nighttime based on the current time, sunrise time, and sunset time. If it is nighttime and the front light sensitivity value is less than the light sensitivity threshold, the activation state of the light source corresponding to the rearview mirror is determined. This avoids the problem of accidentally activating the anti-glare mode and incorrectly adjusting the reflectivity of the rearview mirror when the ambient brightness is high. Furthermore, when the vehicle is in reverse, the target reflectivity is determined to be a preset first reflectivity, and the reflectivity of the rearview mirror is adjusted based on the target reflectivity. This avoids the problem of lost vision caused by accidentally adjusting the reflectivity of the rearview mirror while reversing, effectively improving the anti-glare effect and safety of the rearview mirror.

[0061] It should be noted that the method in this embodiment can be executed by a single device, such as a computer or server. The method can also be applied in a distributed scenario, where multiple devices cooperate to complete the task. In such a distributed scenario, one of these devices may execute only one or more steps of the method in this embodiment, and the multiple devices will interact with each other to complete the method described.

[0062] It should be noted that the above description describes some embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0063] Based on the same inventive concept, and corresponding to any of the above embodiments, this application also provides a rearview mirror anti-glare device. Figure 3 This is a schematic diagram of the structure of a rearview mirror anti-glare device provided in an embodiment of this application, as shown below. Figure 3 As shown, the rearview mirror anti-glare device includes: a proportional coefficient determination module 310, a photosensitive coefficient determination module 320, a current photosensitive magnification determination module 330, and a reflectivity adjustment module 340.

[0064] The system includes a proportionality coefficient determination module 310, which determines a proportionality coefficient based on the forward light sensitivity value of the rearview mirror, wherein the proportionality coefficient is negatively correlated with the forward light sensitivity value; a light sensitivity coefficient determination module 320, which determines a light sensitivity coefficient based on the rear light sensitivity value of the rearview mirror and the forward light sensitivity value; a current light sensitivity magnification determination module 330, which determines a current light sensitivity magnification based on the light sensitivity coefficient, the proportionality coefficient, and a preset accuracy magnification; and a reflectivity adjustment module 340, which determines a target reflectivity of the rearview mirror based on the current light sensitivity magnification and adjusts the reflectivity of the rearview mirror based on the target reflectivity, wherein the forward light sensitivity value is the light sensitivity value in the direction of the front of the vehicle, and the rear light sensitivity value is the light sensitivity value in the direction of the rear of the vehicle.

[0065] Based on the above example, optionally, the reflectance adjustment module 340 is further configured to: determine the target reflectance as a preset first reflectance when the current photosensitive factor is less than a first factor; determine the target reflectance corresponding to the current photosensitive factor based on a preset correspondence between photosensitive factor and reflectance when the current photosensitive factor is greater than or equal to the first factor and less than a second factor; and determine the target reflectance as a preset second reflectance when the current photosensitive factor is greater than or equal to the second factor; wherein the preset first reflectance is greater than the preset second reflectance.

[0066] Based on the above example, optionally, the device further includes: a correspondence determination module, used to determine the correspondence between the preset photosensitive multiple and the reflectance based on the first multiple, the second multiple, the preset first reflectance, and the preset second reflectance.

[0067] Based on the above example, optionally, the scaling factor determination module 310 is further configured to determine the activation state of the light source corresponding to the rearview mirror in response to the rearview mirror being in anti-glare mode; and to determine the scaling factor based on the forward light sensitivity value of the rearview mirror in response to the activation state being not activated.

[0068] Based on the above example, optionally, the proportional coefficient determination module 310 is also used to determine whether night has arrived based on the current time, the sunrise time of the day, and the sunset time of the day; and if night has arrived and the front photosensitive value is less than the photosensitive threshold, determine the activation state of the light source corresponding to the rearview mirror.

[0069] Based on the above example, optionally, after determining whether night has fallen, the device further includes: a target reflectance fixing module, configured to determine the target reflectance as a preset first reflectance in response to determining that night has not fallen; and to determine the target reflectance as the preset first reflectance in response to determining that night has fallen and that the pre-sensitivity value is greater than or equal to the sensitivity threshold.

[0070] Based on the above example, optionally, the device further includes: a preset first reflectivity adjustment module, used to determine the target reflectivity as the preset first reflectivity in response to the activation state of the light source corresponding to the rearview mirror being activated, and / or the vehicle driving state being reversed, and to adjust the reflectivity of the rearview mirror based on the target reflectivity.

[0071] For ease of description, the above devices are described in terms of function, divided into various modules. Of course, in implementing this application, the functions of each module can be implemented in one or more software and / or hardware.

[0072] The apparatus described above is used to implement the corresponding rearview mirror anti-glare method in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0073] Based on the same inventive concept, corresponding to any of the above embodiments, this application also provides a rearview mirror anti-glare system. Figure 4 This is a schematic diagram of the structure of a rearview mirror anti-glare system provided in an embodiment of this application, as shown below. Figure 4 As shown, the system includes: a target light source, a light sensor, a gear shift system, a body control system, a cabin system, and an interior rearview mirror system.

[0074] The system comprises two components: a target light source and a light sensor, both connected to the vehicle body control system. The target light source corresponds to the rearview mirror and sends its activation status to the control system. The light sensor acquires the light signals from the vehicle lights and sends them to the control system. The vehicle body control system is also connected to the rearview mirror system, sending the target light source's activation status and the light signals from the vehicle lights. Based on the light signals from the vehicle lights, the current time, sunrise time, and sunset time, the cockpit system determines whether nighttime (day / night mode) has begun. Furthermore, the cockpit system connects to the rearview mirror system to send the day / night status information. A gear shift system connects to the rearview mirror system, sending information about whether reverse gear is engaged. This allows the rearview mirror system to determine the target reflectivity (preset first reflectivity) when the vehicle is in reverse and adjust the mirror's reflectivity accordingly. The rearview mirror system can determine the scaling factor based on the front light sensitivity of the rearview mirror; determine the light sensitivity factor based on the rear light sensitivity and front light sensitivity of the rearview mirror; determine the current light sensitivity factor based on the light sensitivity factor, scaling factor, and preset accuracy factor; determine the target reflectivity of the rearview mirror based on the current light sensitivity factor, and adjust the reflectivity of the rearview mirror based on the target reflectivity.

[0075] The system described above is used to implement the corresponding rearview mirror anti-glare method in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0076] Based on the same inventive concept, corresponding to the methods of any of the above embodiments, this application also provides a vehicle rearview mirror, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the rearview mirror anti-glare method described in any of the above embodiments.

[0077] Figure 5This embodiment illustrates a more specific hardware structure of a vehicle rearview mirror. The device may include a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, memory 1020, input / output interface 1030, and communication interface 1040 are interconnected internally via the bus 1050.

[0078] The processor 1010 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0079] The memory 1020 can be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 can store the operating system and other applications. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program code is stored in the memory 1020 and is called and executed by the processor 1010.

[0080] The input / output interface 1030 is used to connect input / output modules to realize information input and output. Input / output modules can be configured as components within the device (not shown in the figure) or externally connected to the device to provide corresponding functions. Input devices may include keyboards, mice, touchscreens, microphones, various sensors, etc., while output devices may include displays, speakers, vibrators, indicator lights, etc.

[0081] The communication interface 1040 is used to connect a communication module (not shown in the figure) to enable communication between this device and other devices. The communication module can communicate via wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).

[0082] Bus 1050 includes a pathway for transmitting information between various components of the device, such as processor 1010, memory 1020, input / output interface 1030, and communication interface 1040.

[0083] It should be noted that although the above-described device only shows the processor 1010, memory 1020, input / output interface 1030, communication interface 1040, and bus 1050, in specific implementations, the device may also include other components necessary for normal operation. Furthermore, those skilled in the art will understand that the above-described device may only include the components necessary for implementing the embodiments of this specification, and not necessarily all the components shown in the figures.

[0084] The rearview mirror in the above embodiments is used to implement the corresponding anti-glare method of the rearview mirror in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0085] Based on the same inventive concept, this application also provides a vehicle, wherein the vehicle includes a rearview mirror as described in the above embodiments.

[0086] Based on the same inventive concept, corresponding to the methods of any of the above embodiments, this application also provides a computer-readable storage medium storing computer instructions for causing the computer to execute the rearview mirror anti-glare method as described in any of the above embodiments.

[0087] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transfer medium that can be used to store information accessible by a computing device.

[0088] The computer instructions stored in the storage medium of the above embodiments are used to cause the computer to execute the rearview mirror anti-glare method as described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0089] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in the details for the sake of brevity.

[0090] Additionally, to simplify the description and discussion, and to avoid obscuring the embodiments of this application, the well-known power / ground connections to integrated circuit (IC) chips and other components may or may not be shown in the provided drawings. Furthermore, the apparatus may be shown in block diagram form to avoid obscuring the embodiments of this application, and this also takes into account the fact that the details of the implementation of these block diagram apparatuses are highly dependent on the platform on which the embodiments of this application will be implemented (i.e., these details should be fully understood by those skilled in the art). While specific details (e.g., circuits) have been set forth to describe exemplary embodiments of this application, it will be apparent to those skilled in the art that the embodiments of this application can be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0091] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications, and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may be used with the embodiments discussed.

[0092] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A method for preventing glare in a rearview mirror, characterized in that, include: A scaling factor is determined based on the forward light sensitivity value of the rearview mirror inside the vehicle; wherein the scaling factor is inversely proportional to the forward light sensitivity value. The light sensitivity coefficient is determined based on the rear light sensitivity value and the front light sensitivity value of the rearview mirror. The current photosensitivity is determined based on the photosensitivity coefficient, the scaling factor, and the preset precision factor; Based on the current photosensitive magnification, determine the target reflectivity of the rearview mirror, and adjust the reflectivity of the rearview mirror based on the target reflectivity; Wherein, the front light-sensing value is the light-sensing value in the direction of the front of the vehicle, and the rear light-sensing value is the light-sensing value in the direction of the rear of the vehicle; the light sensitivity coefficient is the ratio of the rear light-sensing value to the front light-sensing value; the preset accuracy multiple is a pre-set value used to adjust the current light sensitivity multiple accuracy; and the target reflectivity is a reflectivity value determined by combining the front light-sensing value and the rear light-sensing value for adjusting the reflectivity of the rearview mirror. Furthermore, determining the target reflectivity of the rearview mirror based on the current photosensitive magnification includes: If the current photosensitive factor is less than the first factor, the target reflectance is determined to be a preset first reflectance; When the current photosensitive factor is greater than or equal to the first factor and less than the second factor, the target reflectance corresponding to the current photosensitive factor is determined based on a preset correspondence between photosensitive factor and reflectance. If the current photosensitive factor is greater than or equal to the second factor, the target reflectance is determined to be a preset second reflectance; wherein, the preset first reflectance is greater than the preset second reflectance; The method further includes: Based on the first multiple, the second multiple, the preset first reflectivity, and the preset second reflectivity, a preset correspondence between the photosensitive multiple and the reflectivity is determined.

2. The method according to claim 1, characterized in that, The process of determining the scaling factor based on the forward light sensitivity value of the rearview mirror includes: In response to the rearview mirror being in anti-glare mode, determine the activation status of the light source corresponding to the rearview mirror. In response to the startup state being "not started", a proportional coefficient is determined based on the forward light sensitivity value of the rearview mirror inside the vehicle.

3. The method according to claim 2, characterized in that, Determining the activation state of the light source corresponding to the rearview mirror includes: Determine whether night has begun based on the current time, the sunrise time of the day, and the sunset time of the day; If it is determined that nighttime has arrived and the front light sensitivity value is less than the light sensitivity threshold, the activation status of the light source corresponding to the rearview mirror inside the vehicle is determined.

4. The method according to claim 3, characterized in that, After determining whether night has fallen, the process also includes: In response to determining that night has not yet arrived, the target reflectivity is determined to be a preset first reflectivity; In response to determining that night has arrived and that the previous photosensitivity is greater than or equal to the photosensitivity threshold, the target reflectivity is determined to be the preset first reflectivity.

5. The method according to claim 2, characterized in that, Also includes: In response to the activation state of the light source corresponding to the rearview mirror being "activated" and / or the vehicle being in reverse, the target reflectivity is determined to be a preset first reflectivity, and the reflectivity of the rearview mirror is adjusted based on the target reflectivity.

6. A rearview mirror anti-glare device, characterized in that, include: The proportional coefficient determination module is used to determine the proportional coefficient based on the forward light-sensing value of the rearview mirror inside the vehicle; wherein the proportional coefficient is inversely proportional to the forward light-sensing value. A photosensitive coefficient determination module is used to determine the photosensitive coefficient based on the rear photosensitive value and the front photosensitive value of the rearview mirror. The current photosensitive factor determination module is used to determine the current photosensitive factor based on the photosensitive coefficient, the proportional coefficient, and the preset precision factor; The reflectivity adjustment module is used to determine the target reflectivity of the rearview mirror based on the current photosensitive magnification, and to adjust the reflectivity of the rearview mirror based on the target reflectivity. Wherein, the front light-sensing value is the light-sensing value in the direction of the front of the vehicle, and the rear light-sensing value is the light-sensing value in the direction of the rear of the vehicle; the light sensitivity coefficient is the ratio of the rear light-sensing value to the front light-sensing value; the preset accuracy multiple is a pre-set value used to adjust the current light sensitivity multiple accuracy; and the target reflectivity is a reflectivity value determined by combining the front light-sensing value and the rear light-sensing value for adjusting the reflectivity of the rearview mirror. Furthermore, determining the target reflectivity of the rearview mirror based on the current photosensitive magnification includes: If the current photosensitive factor is less than the first factor, the target reflectance is determined to be a preset first reflectance; When the current photosensitive factor is greater than or equal to the first factor and less than the second factor, the target reflectance corresponding to the current photosensitive factor is determined based on a preset correspondence between photosensitive factor and reflectance. If the current photosensitive factor is greater than or equal to the second factor, the target reflectance is determined to be a preset second reflectance; wherein, the preset first reflectance is greater than the preset second reflectance; Also includes: Based on the first multiple, the second multiple, the preset first reflectivity, and the preset second reflectivity, a preset correspondence between the photosensitive multiple and the reflectivity is determined.

7. A vehicle rearview mirror, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the rearview mirror anti-glare method as described in any one of claims 1 to 5.

8. A vehicle, characterized in that, The vehicle includes the interior rearview mirror as described in claim 7.

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