Anti-glare method and apparatus for rearview mirror, in-vehicle rearview mirror, and vehicle

Abstract

The present application provides an anti-glare method and apparatus for a rearview mirror, an in-vehicle rearview mirror, and a vehicle. The method comprises: on the basis of a front light sensitivity value of an in-vehicle rearview mirror, determining a proportionality coefficient, the proportionality coefficient being negatively correlated with the front light sensitivity value; on the basis of a rear light sensitivity value and the front light sensitivity value of the in-vehicle rearview mirror, determining a light sensitivity coefficient; on the basis of the light sensitivity coefficient, the proportionality coefficient, and a preset precision multiple, determining a current light sensitivity multiple; on the basis of the current light sensitivity multiple, determining a target reflectivity of the in-vehicle rearview mirror; and, on the basis of the target reflectivity, adjusting the reflectivity of the in-vehicle rearview mirror. The front light sensitivity value is a light sensitivity value in a forward direction of a vehicle, and the rear light sensitivity value is a light sensitivity value in a rearward direction of the vehicle. By means of the technical solution of the present application, the reflectivity of an in-vehicle rearview mirror is adjusted in combination with environmental brightness, and the display effect of the in-vehicle rearview mirror is improved, thereby improving driving safety.

Description

Rearview mirror anti-glare method, device, interior rearview mirror and vehicle

[0001] This application claims priority to the patent application filed with the China Patent Office on November 23, 2023, with application number 202311576742.4 and patent application name “Rearview mirror anti-glare method, device, interior rearview mirror and vehicle”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of automobile accessories, and in particular to a rearview mirror anti-glare method and device, an interior rearview mirror and a vehicle. Background Art

[0003] The current anti-glare method for rearview mirrors is to obtain the difference or ratio of the front and rear light intensities through two light sensors at the front and rear of the rearview mirror, and then automatically adjust the reflectivity of the rearview mirror.

[0004] However, this reflectivity adjustment method can cause a significant change in the reflectivity of the rearview mirror in a low-brightness environment with a slight amount of light, leading to the problem of misadjustment of the reflectivity of the rearview mirror, which affects the display effect of the rearview mirror and even affects driving safety.

[0005] Summary of the Invention

[0006] In view of this, the purpose of this application is to propose a rearview mirror anti-glare method, device, interior rearview mirror and vehicle, so as to adjust the reflectivity of the interior rearview mirror in combination with the ambient brightness, improve the display effect of the interior rearview mirror, and improve driving safety.

[0007] Based on the above objectives, the present application provides a rearview mirror anti-glare method, the method comprising:

[0008] Determine a proportional coefficient according to the front light sensitivity value of the interior rearview mirror; wherein the proportional coefficient is negatively correlated with the front light sensitivity value;

[0009] Determine the sensitivity coefficient based on the rear sensitivity value and the front sensitivity value of the rearview mirror inside the vehicle;

[0010] Determine the current photosensitivity based on the photosensitivity, the scale factor, and the preset precision multiple;

[0011] Determine the target reflectivity of the interior rearview mirror according to the current photosensitivity, and adjust the reflectivity of the interior rearview mirror based on the target reflectivity;

[0012] Among them, the front sensitivity value is the sensitivity value in the direction of the front of the vehicle, and the rear sensitivity value is the sensitivity value in the direction of the rear of the vehicle.

[0013] Based on the above purpose, the present application also provides a rearview mirror anti-glare device, which includes: a processor, the processor is used to execute the following program modules stored in a memory:

[0014] The proportional coefficient determination module is configured to: determine the proportional coefficient according to the front light sensitivity value of the interior rearview mirror; wherein the proportional coefficient is negatively correlated with the front light sensitivity value;

[0015] The sensitivity coefficient determination module is configured to: determine the sensitivity coefficient according to the rear sensitivity value and the front sensitivity value of the rearview mirror inside the vehicle;

[0016] The current photosensitivity multiple determination module is configured to: determine the current photosensitivity multiple based on the photosensitivity coefficient, the proportional coefficient and the preset precision multiple;

[0017] The reflectivity adjustment module is configured to: determine a target reflectivity of the interior rearview mirror according to the current photosensitivity magnification, and adjust the reflectivity of the interior rearview mirror based on the target reflectivity;

[0018] Among them, the front sensitivity value is the sensitivity value in the direction of the front of the vehicle, and the rear sensitivity value is the sensitivity value in the direction of the rear of the vehicle.

[0019] Based on the above-mentioned purpose, the present application also provides an interior rearview mirror, comprising a memory, a processor, and a computer program stored in the memory and runnable on the processor, characterized in that when the processor executes the program, a rearview mirror anti-glare method as provided in any embodiment of the present application is implemented.

[0020] Based on the above purpose, the present application also provides a vehicle, characterized in that the vehicle includes an interior rearview mirror provided in any embodiment of the present application.

[0021] As can be seen from the above, the rearview mirror anti-glare method provided by the present application determines the proportional coefficient based on the front sensitivity value of the interior rearview mirror, so as to measure the ambient brightness through the front sensitivity value, and then determines the sensitivity coefficient based on the rear sensitivity value and the front sensitivity value of the interior rearview mirror, and determines the current sensitivity multiple based on the sensitivity coefficient, the proportional coefficient and the preset accuracy multiple, so as to adaptively determine the current sensitivity multiple in combination with the ambient brightness, determine the target reflectivity of the interior rearview mirror based on the current sensitivity multiple, and adjust the reflectivity of the interior rearview mirror based on the target reflectivity, thereby realizing the adjustment of the reflectivity of the interior rearview mirror in combination with the ambient brightness, and improving the anti-glare effect and safety of the interior rearview mirror. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in this application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are merely embodiments of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] FIG1 is a flow chart of a rearview mirror anti-glare method provided by an embodiment of the present application;

[0024] FIG2 is a flow chart of another rearview mirror anti-glare method provided by an embodiment of the present application;

[0025] FIG3 is a schematic structural diagram of a rearview mirror anti-glare device provided in an embodiment of the present application;

[0026] FIG4 is a schematic structural diagram of a rearview mirror anti-glare system provided in an embodiment of the present application;

[0027] FIG5 is a schematic diagram of the hardware structure of an interior rearview mirror provided in an embodiment of the present application. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of this application more clear, this application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0029] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like 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.

[0030] FIG1 is a flow chart of a rearview mirror anti-glare method provided in an embodiment of the present application, which is mainly applicable to the case of adjusting the reflectivity of the interior rearview mirror. As shown in FIG1 , the method may specifically include the following steps:

[0031] S110: Determine a proportional coefficient based on the front light sensitivity value of the interior rearview mirror.

[0032] The front light sensitivity value is the light sensitivity value from the vehicle's front. This value can be obtained by a photosensitive device mounted on the mirror housing of the interior rearview mirror. The light sensitivity value can be understood as light intensity. The proportional coefficient is used to adjust the current light sensitivity magnification ratio corresponding to different front light sensitivity values. The proportional coefficient is negatively correlated with the front light sensitivity value.

[0033] Specifically, the front light sensitivity value is inversely calculated to obtain a proportional coefficient.

[0034] For example, the range of the proportional coefficient K is defined as 1 to 15 (example value range). According to the relationship between the K value and the front sensitivity value: K [1 to 15] corresponds to the front sensitivity value [0 to 140], and the two are in an inversely proportional function relationship. The following formula applies, and the converted K value is calculated as follows: K = (150-front sensitivity value) / 10.

[0035] Based on the above example, the proportional coefficient can be determined according to the front light sensitivity value of the interior rearview mirror in the following way:

[0036] In response to the interior rearview mirror being in anti-glare mode, the activation state of the light source corresponding to the interior rearview mirror is determined; in response to the activation state being not activated, a proportional coefficient is determined according to the front light sensitivity value of the interior rearview mirror.

[0037] Among them, the anti-glare mode is a usage mode of the interior rearview mirror. When using the anti-glare mode, the reflectivity of the interior rearview mirror can be adjusted according to the light sensitivity, so as to automatically reduce the reflectivity when the strong light is dazzling, thereby improving driving safety. Optionally, the interior rearview mirror also includes a streaming mode, which uses real-scene display technology to combine the camera function with the traditional interior rearview mirror to project a real-time image behind the car on the mirror. The light source corresponding to the interior rearview mirror is a light source that affects the light sensitivity of the interior rearview mirror, such as: a reading light set above the interior rearview mirror, etc. The startup status is used to describe the status of whether the light source is turned on, and can include started and not started.

[0038] Specifically, in response to the interior rearview mirror being in anti-glare mode, the activation state of a light source corresponding to the interior rearview mirror, which may affect the light sensitivity of the interior rearview mirror, is determined, so as to adaptively adjust the reflectivity of the interior rearview mirror. In response to the light source corresponding to the interior rearview mirror being inactive, it can be determined that the light source corresponding to the interior rearview mirror has no effect on the interior rearview mirror. Therefore, a proportional coefficient can be determined based on the front light sensitivity value of the interior rearview mirror, thereby obtaining a target reflectivity of the interior rearview mirror and adjusting the reflectivity of the interior rearview mirror to achieve an anti-glare effect.

[0039] Optionally, in response to the interior rearview mirror being in the anti-glare mode, the activation state of the light source corresponding to the interior rearview mirror is determined in the following manner:

[0040] Get the usage mode of the interior rearview mirror;

[0041] In response to the interior rearview mirror being in an anti-glare mode, determining an activation state of a light source corresponding to the interior rearview mirror;

[0042] In response to the interior rearview mirror being in the streaming mode, the process returns to executing the operation of obtaining the usage mode of the interior rearview mirror until the interior rearview mirror is in the anti-glare mode.

[0043] The usage mode may be an anti-glare mode or a streaming mode.

[0044] Specifically, the usage mode of the interior rearview mirror is obtained. In response to the interior rearview mirror not being in anti-glare mode, for example, the interior rearview mirror is in streaming mode, the process is exited, and the process is returned to re-acquire the usage mode of the interior rearview mirror until the interior rearview mirror is triggered to be selected as anti-glare mode, and then the operation of determining the startup status of the light source corresponding to the interior rearview mirror is executed in response to the interior rearview mirror being in anti-glare mode.

[0045] Optionally, in response to the activation state of the light source corresponding to the interior rearview mirror being activated, the target reflectivity is determined to be a preset first reflectivity, and the reflectivity of the interior rearview mirror is adjusted based on the target reflectivity.

[0046] The preset first reflectivity is the highest reflectivity that the interior rearview mirror can achieve in the anti-glare mode.

[0047] Specifically, in response to the start-up state of the light source corresponding to the interior rearview mirror being started, it can be determined that the light source corresponding to the interior rearview mirror will have an impact on the display of the interior rearview mirror. Therefore, in order to ensure the display effect of the interior rearview mirror, the reflectivity of the interior rearview mirror is adjusted to a preset first reflectivity. The preset first reflectivity can be understood as the highest reflectivity that the interior rearview mirror can achieve in the anti-glare mode, for example: 50%, etc.

[0048] S120: Determine a sensitivity coefficient according to the rear sensitivity value and the front sensitivity value of the interior rearview mirror.

[0049] The rear light sensitivity value is the light sensitivity value at the rear of the vehicle. The rear light sensitivity value can be obtained by a light sensor installed on the mirror surface of the rearview mirror inside the vehicle. The light sensitivity coefficient is the ratio of the rear light sensitivity value to the front light sensitivity value.

[0050] Specifically, the ratio of the rear light sensitivity value to the front light sensitivity value of the interior rearview mirror is used as the light sensitivity coefficient.

[0051] S130: Determine the current photosensitivity based on the photosensitivity, the scale factor, and the preset precision multiple.

[0052] The current sensitivity factor is a value used to describe the relationship between the current front sensitivity value and the rear sensitivity value. The preset precision factor is a pre-set value used to adjust the precision of the current sensitivity factor, such as 10.

[0053] Specifically, the product of the sensitivity coefficient, the proportional coefficient and the preset precision multiple is determined as the current sensitivity multiple.

[0054] Optionally, the current sensitivity multiple can be determined based on the sensitivity coefficient, the scale factor, and the preset precision multiple in the following manner:

[0055] The product of the sensitivity coefficient and the proportional coefficient is used as a reference value;

[0056] The product of the reference value and the preset accuracy multiple is determined as the current photosensitivity multiple.

[0057] Exemplarily, the current sensitivity multiple = 10*rear sensitivity value*K*35% / front sensitivity value; wherein, 10 is a preset precision multiple, which is adjustable, and 35% is a preset parameter, which is adjustable.

[0058] S140: Determine a target reflectivity of the interior rearview mirror according to the current photosensitivity, and adjust the reflectivity of the interior rearview mirror based on the target reflectivity.

[0059] The target reflectivity is a reflectivity value determined by comprehensively considering the front light sensitivity value and the rear light sensitivity value and used to adjust the reflectivity of the interior rearview mirror.

[0060] Specifically, the current light sensitivity is processed according to a pre-established model or function describing the relationship between the current light sensitivity and the target reflectivity to obtain the target reflectivity of the interior rearview mirror. Furthermore, the reflectivity of the interior rearview mirror is adjusted based on the target reflectivity.

[0061] Exemplarily, based on the current photosensitivity, the target reflectivity of the interior rearview mirror can be determined by processing through a pre-set formula or model to obtain the target reflectivity. For example, by using the sample photosensitivity as input and the sample reflectivity as output, a machine learning model is trained to obtain a model for determining the target reflectivity. Alternatively, the corresponding target reflectivity can be determined by the current photosensitivity, etc.

[0062] Based on the above example, the target reflectivity of the interior rearview mirror can be determined according to the current photosensitivity in the following way:

[0063] In response to the current photosensitivity being less than the first multiple, determining the target reflectivity to be a preset first reflectivity;

[0064] In response to the current sensitivity magnification being greater than or equal to the first magnification and less than the second magnification, determining a target reflectivity corresponding to the current sensitivity magnification based on a preset correspondence between the sensitivity magnification and the reflectivity;

[0065] In response to the current photosensitivity being greater than or equal to the second sensitivity, the target reflectivity is determined to be a preset second reflectivity.

[0066] The preset first reflectivity is greater than the preset second reflectivity. The preset second reflectivity is the minimum reflectivity that the interior rearview mirror can achieve in anti-glare mode. The first magnification is a threshold used to determine whether the target reflectivity is at the current sensitivity magnification of the preset first reflectivity, and the second magnification is a threshold used to determine whether the target reflectivity is at the current sensitivity magnification of the preset second reflectivity. The correspondence between the preset sensitivity magnification and reflectivity describes the functional relationship between the sensitivity magnification and reflectivity.

[0067] Specifically, different ways of obtaining the target reflectivity are determined based on the size relationship among the current sensitivity magnification, the first magnification, and the second magnification. In response to the current sensitivity magnification being less than the first magnification, it indicates that the current interior rearview mirror has a lower requirement for anti-glare, and therefore, the target reflectivity is determined to be the preset first reflectivity. In response to the current sensitivity magnification being greater than or equal to the first magnification and less than the second magnification, it indicates that the current interior rearview mirror needs to be anti-glare, and therefore, the current sensitivity magnification is input into the preset correspondence between sensitivity magnification and reflectivity to determine the target reflectivity corresponding to the current sensitivity magnification. In response to the current sensitivity magnification being greater than or equal to the second magnification, it indicates that the current interior rearview mirror has the highest requirement for anti-glare, and therefore, the target reflectivity is determined to be the preset second reflectivity to maximize the anti-glare function.

[0068] Based on the above example, the corresponding relationship between the preset photosensitivity and reflectivity can be determined in the following way:

[0069] According to the first magnification, the second magnification, the preset first reflectivity and the preset second reflectivity, a corresponding relationship between the preset sensitivity magnification and the reflectivity is determined.

[0070] Specifically, since the first multiple corresponds to the preset first reflectivity and the second multiple corresponds to the preset second reflectivity, the above two corresponding relationships can be substituted into the preset function relationship to obtain the corresponding relationship between the preset sensitivity multiple and the reflectivity.

[0071] Optionally, the preset correspondence between the photosensitivity and the reflectivity can be a preset function relationship, a preset model relationship, or a one-to-one preset relationship. The preset function relationship can be a linear function relationship, etc., which can be determined based on actual needs. The preset model relationship can be a convolutional neural network model relationship, etc., which can be determined based on actual needs. Regardless of whether it is a preset function relationship or a preset model relationship, its input is the current photosensitivity and its output is the target reflectivity.

[0072] For example, the brightness multiplier relationship between the interior rearview mirror's light sensitivity (rear light sensitivity) and the rear housing's light sensitivity (front light sensitivity) is linearly adjusted according to a specific algorithm, specifically increasing or decreasing. The core of this algorithm is to use the front light sensitivity as the ambient brightness. The lower the ambient brightness, the smaller the drop in reflectivity caused by the same brightness multiplier. The following is an example of the algorithm, where the parameter value range is variable.

[0073] First, define the range of the proportional coefficient K as 1 to 15 (example value range). According to the relationship between the K value and the front sensitivity value: K [1 to 15] corresponds to the front sensitivity value [0 to 140]. The two are in inverse proportional function relationship. The following formula applies. The converted K value is calculated as follows: K = (150-front sensitivity value) / 10; then, the current sensitivity multiple = 10 * rear sensitivity value * K * 35% / front sensitivity value; where 10 is the preset accuracy multiple, which can be adjusted, and 35% is the preset parameter, which can be adjusted. After the current sensitivity multiple, the current sensitivity multiple is compared with the first multiple (25 in this example, which can be adjusted according to actual needs) and the second multiple (60 in this example, which can be adjusted according to actual needs) to determine the target reflectivity. If the current sensitivity is less than 25, the target reflectivity is 45% (the preset first reflectivity, i.e., the maximum anti-glare rate). If the current sensitivity is ≥60, the anti-glare function is turned on and the target reflectivity is 5% (the preset second reflectivity, i.e., the minimum anti-glare rate). If the current sensitivity is ≥625 and the current sensitivity is less than 60, the target reflectivity is determined based on the relationship between the reflectivity parameter and the front and rear sensitivity values ​​(the preset correspondence between sensitivity and reflectivity): target reflectivity = (515 – 8 * current sensitivity) / 7. Through the above algorithm, the sensitivity of the interior rearview mirror to the decrease in reflectivity decreases as the ambient brightness (front sensitivity value) decreases.

[0074] Generally, when the ratio of the rear light sensitivity value to the front light sensitivity value is greater than a certain threshold, the system will enter anti-glare mode, which means that the reflectivity of the rearview mirror inside the car will be reduced. However, this solution has the problem of mistakenly entering anti-glare mode when the ambient brightness is very low (the front light sensitivity value tends to 0), and the brightness of the weak light from the rear causes the ratio to be too large (greater than the preset threshold). Through the above algorithm, the threshold for entering anti-glare mode is changed from static to a parameter that changes dynamically with the ambient brightness and changes linearly in the opposite direction. The lower the ambient brightness, the higher the threshold required to enter anti-glare mode, which solves the problem of mistakenly entering anti-glare mode in low ambient brightness, that is, it solves the problem of entering anti-glare mode in low light conditions due to the influence of dim light, which makes it more difficult to see.

[0075] The rearview mirror anti-glare method provided in this embodiment determines a proportional coefficient based on the front light sensitivity value of the interior rearview mirror, so as to measure the ambient brightness through the front light sensitivity value, and then determines the sensitivity coefficient based on the rear light sensitivity value and the front light sensitivity value of the interior rearview mirror, and determines the current sensitivity multiple based on the sensitivity coefficient, the proportional coefficient and the preset accuracy multiple, so as to adaptively determine the current sensitivity multiple in combination with the ambient brightness, determine the target reflectivity of the interior rearview mirror based on the current sensitivity multiple, and adjust the reflectivity of the interior rearview mirror based on the target reflectivity, thereby realizing the adjustment of the reflectivity of the interior rearview mirror in combination with the ambient brightness, and improving the anti-glare effect and safety of the interior rearview mirror.

[0076] FIG2 is a flow chart of another rearview mirror anti-glare method provided in an embodiment of the present application. Based on the aforementioned embodiments, this method optionally illustrates a triggering method for determining a proportional coefficient based on the front light sensitivity value of the interior rearview mirror. It also includes an exemplary description of the adjustment of the target reflectivity when the vehicle is in reverse. Explanations of terms that are identical or corresponding to those in the aforementioned embodiments are omitted here. As shown in FIG2 , this method may specifically include the following steps:

[0077] S210: In response to the interior rearview mirror being in anti-glare mode, determine whether it is night time based on the current time, the sunrise time of the day, and the sunset time of the day.

[0078] The sunrise time and sunset time of the day may be the sunrise time and sunset time of the current area obtained from the online weather forecast, or may be the empirical sunrise time and sunset time corresponding to a pre-set season.

[0079] Specifically, in response to the interior rearview mirror being in anti-glare mode, it can be determined whether it is night time. This is because the anti-glare mode adjusts the reflectivity of the interior rearview mirror only at night and does not require adjustment during the day. Accordingly, the sunrise and sunset times of the current day are first determined, and then a determination is made as to whether the current time is between the sunrise and sunset times. If the current time is between the sunrise and sunset times, it indicates that it is daytime and has not entered night. Otherwise, it indicates that it is night time and has entered night time.

[0080] Based on the above example, the following method can be used to determine whether it is night time based on the current time, the sunrise time of the day, and the sunset time of the day:

[0081] Get the sunrise time and sunset time of the day;

[0082] In response to the current time being between the sunrise time and the sunset time of the current day, it is determined that it has not entered night;

[0083] In response to the current time being outside the sunrise time and the sunset time of the day, it is determined that it has entered night.

[0084] Specifically, the current sunrise time and the current sunset time can be obtained from the current day's weather forecast, and then a determination is made as to whether the current time is between the current sunrise time and the current sunset time. If the current time is between the current sunrise time and the current sunset time, it is determined that night has not yet arrived; otherwise, it is determined that night has arrived.

[0085] S220: In response to determining that it is nighttime and the front light sensitivity value is less than a light sensitivity threshold, determining the activation state of a light source corresponding to an interior rearview mirror.

[0086] The light sensitivity threshold is a pre-set light intensity used to determine whether the ambient brightness is too low.

[0087] Specifically, after judging that it is night based on the time, the front light sensitivity value is further regarded as the ambient brightness. Then, in response to the front light sensitivity value being less than the light sensitivity threshold, it can be determined that the ambient brightness around the vehicle is low, and the conditions for triggering anti-glare are met, so as to further determine the startup status of the light source corresponding to the interior rearview mirror.

[0088] Based on the above example, the vehicle body light status can also be combined to determine whether it is night. This can be performed after determining whether it is night based on the current time, the sunrise time of the day, and the sunset time of the day:

[0089] In response to determining that it is not night, obtaining a vehicle body light signal, and determining whether the vehicle body light is on according to the vehicle body light signal;

[0090] In response to the vehicle body lights being turned on, it is determined that it is entering night time;

[0091] In response to the vehicle body lights being turned off, it is determined that it has not entered night time.

[0092] The vehicle body light signal is a signal obtained by detecting the light emitted by the vehicle body light and is used to evaluate whether the vehicle body light is emitting light. It is understandable that the vehicle body light is usually turned on and emits light in a dark scene.

[0093] Specifically, in response to determining that it has not entered night, it means that according to the time, it has not entered night. Further, in combination with the body light signal, it is determined whether the vehicle is in a dark scene similar to night. In response to detecting the body light signal, it can be determined that the body lights are on; otherwise, it is determined that the body lights are off. In response to the body lights being on, it means that even though it has not entered night according to the time, the current scene is too dim, and it can be determined that it has entered night. At this time, it is not true night, but a dark scene. In response to the body lights being off, it is still determined that it has not entered night.

[0094] It is understood that determining whether to enter night mode (i.e., the subsequent step of determining the activation status of the light source corresponding to the interior rearview mirror) can include the following two methods: ① The cockpit system, such as the HUT, determines that the vehicle is in a night state; ② The interior rearview mirror itself determines that the vehicle is in a night state. Both of the above methods simultaneously determine that the vehicle is in a night state, i.e., determining that the vehicle has entered night mode. The cockpit system's night state determination is based on a time determination or other vehicle body status signals, such as whether the small headlights (body lights) are on. For example, based on the current time, the sunrise time of the day, and the sunset time of the day, determining whether the vehicle is in a night state, obtaining light signals from the body lights, determining whether the body lights are on based on the light signals from the body lights, determining whether the vehicle is in a night state, and responsive to the body lights being on, responsive to the vehicle being in a night state. The interior rearview mirror's night state determination is based on the brightness value obtained by the rear housing light sensor, i.e., the front light sensitivity value. Response to the front light sensitivity value being less than a light sensitivity threshold, a night state is determined.

[0095] Based on the above example, after determining whether it is night, in response to determining that it is not night or that it is night and the front light sensitivity value is greater than or equal to the light sensitivity threshold, the target reflectivity can be determined in the following manner:

[0096] In response to determining that it is not night, determining the target reflectivity to be a preset first reflectivity;

[0097] In response to determining that it is night and the front light sensitivity value is greater than or equal to a light sensitivity threshold, the target reflectivity is determined to be a preset first reflectivity.

[0098] Specifically, in response to determining that it has not entered 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 interior rearview mirror is adjusted based on the target reflectivity. In response to determining that it has entered 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 relatively bright, so there is no need to trigger subsequent reflectivity adjustment. Therefore, the target reflectivity is determined to be the preset first reflectivity, so that the reflectivity of the interior rearview mirror is adjusted based on the target reflectivity.

[0099] S230. In response to the startup state being not started, determine a proportional coefficient based on the front light sensitivity value of the interior rearview mirror; determine a sensitivity coefficient based on the rear light sensitivity value and the front light sensitivity value of the interior rearview mirror; determine a current sensitivity multiple based on the sensitivity coefficient, the proportional coefficient, and a preset accuracy multiple; determine a target reflectivity of the interior rearview mirror based on the current sensitivity multiple, and adjust the reflectivity of the interior rearview mirror based on the target reflectivity.

[0100] S240: In response to the vehicle driving state being a reverse state, determining a target reflectivity as a preset first reflectivity, and adjusting the reflectivity of the interior rearview mirror based on the target reflectivity.

[0101] Specifically, the reversing state is determined by the vehicle gear system. According to the vehicle gear system, it can be judged whether the vehicle driving state is the reversing state, that is, the reverse gear R state. In response to the vehicle driving state being the reversing state, it indicates that the vehicle is currently reversing. If the reflectivity of the interior rearview mirror is adjusted, it may cause the situation behind the vehicle to be unable to be seen clearly, posing a safety hazard. Therefore, the target reflectivity is determined to be a preset first reflectivity, and the reflectivity of the interior rearview mirror is adjusted based on the target reflectivity.

[0102] Exemplarily, the interior rearview mirror system receives the gear status of the entire vehicle, which can be received through a hard line or a CAN line. When it is determined to be in the reverse gear R state, it exits the state of adjusting the target reflectivity according to the front sensitivity value and the rear sensitivity value, and maintains the highest reflectivity, that is, the preset first reflectivity.

[0103] The rearview mirror anti-glare method provided in this embodiment determines whether it is night based on the current time, the sunrise time of the day, and the sunset time of the day. In response to determining that it is night and the front light sensitivity value is less than the light sensitivity threshold, the activation state of the light source corresponding to the interior rearview mirror is determined, thereby avoiding the problem of mistakenly turning on the anti-glare mode and mistakenly adjusting the reflectivity of the interior rearview mirror when the ambient brightness is bright. In addition, in response to the vehicle's driving state being a reverse state, the target reflectivity is determined to be a preset first reflectivity, and the reflectivity of the interior rearview mirror is adjusted based on the target reflectivity, thereby avoiding the problem of loss of field of view due to mistaken adjustment of the reflectivity of the interior rearview mirror when reversing, thereby effectively improving the anti-glare effect and safety of the interior rearview mirror.

[0104] It should be noted that the method of the embodiment of the present application can be performed by a single device, such as a computer or server. The method of this embodiment can also be applied in a distributed scenario and performed by multiple devices working together. In such a distributed scenario, one of the multiple devices may only perform one or more steps of the method of the embodiment of the present application, and the multiple devices will interact with each other to complete the method.

[0105] It should be noted that the above description is limited to some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in an order different from that described in the above embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the specific order or sequential order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0106] Based on the same technical concept, and corresponding to any of the above-mentioned embodiments and methods, the present application also provides a rearview mirror anti-glare device. FIG3 is a schematic structural diagram of a rearview mirror anti-glare device provided in an embodiment of the present application. As shown in FIG3 , the rearview mirror anti-glare device includes a processor configured to execute the following program modules stored in a memory: a proportional coefficient determination module 310, a sensitivity coefficient determination module 320, a current sensitivity multiple determination module 330, and a reflectivity adjustment module 340.

[0107] Among them, the proportional coefficient determination module 310 is configured to: determine the proportional coefficient according to the front sensitivity value of the interior rearview mirror; wherein the proportional coefficient is negatively correlated with the front sensitivity value; the sensitivity coefficient determination module 320 is configured to: determine the sensitivity coefficient according to the rear sensitivity value and the front sensitivity value of the interior rearview mirror; the current sensitivity multiple determination module 330 is configured to: determine the current sensitivity multiple based on the sensitivity coefficient, the proportional coefficient and the preset accuracy multiple; the reflectivity adjustment module 340 is configured to: determine the target reflectivity of the interior rearview mirror according to the current sensitivity multiple, and adjust the reflectivity of the interior rearview mirror based on the target reflectivity; wherein the front sensitivity value is the sensitivity value in the direction of the front of the vehicle, and the rear sensitivity value is the sensitivity value in the direction of the rear of the vehicle.

[0108] Based on the above example, optionally, the reflectivity adjustment module 340 is further configured to: in response to the current sensitivity magnification being less than the first magnification, determine the target reflectivity to be a preset first reflectivity; in response to the current sensitivity magnification being greater than or equal to the first magnification and less than the second magnification, determine the target reflectivity corresponding to the current sensitivity magnification based on the preset correspondence between the sensitivity magnification and the reflectivity; in response to the current sensitivity magnification being greater than or equal to the second magnification, determine the target reflectivity to be a preset second reflectivity; wherein, the preset first reflectivity is greater than the preset second reflectivity.

[0109] Based on the above example, optionally, the device also includes: a correspondence determination module, configured to determine the correspondence between the preset photosensitivity magnification and the reflectivity based on the first magnification, the second magnification, the preset first reflectivity and the preset second reflectivity.

[0110] Based on the above example, optionally, the proportional coefficient determination module 310 is further configured to: in response to the interior rearview mirror being in anti-glare mode, determine the activation state of the light source corresponding to the interior rearview mirror; in response to the activation state being not activated, determine the proportional coefficient according to the front light sensitivity value of the interior rearview mirror.

[0111] Based on the above example, optionally, the proportional coefficient determination module 310 is further configured to: determine whether it is night time based on the current time, the sunrise time of the day, and the sunset time of the day; in response to determining that it is night time and the front light sensitivity value is less than the light sensitivity threshold, determine the activation state of the light source corresponding to the interior rearview mirror.

[0112] Based on the above example, optionally, the proportional coefficient determination module 310 is further configured to: obtain the sunrise time and the sunset time of the day; in response to the current time being between the sunrise time and the sunset time of the day, determine that it has not entered night; in response to the current time being outside the sunrise time and the sunset time of the day, determine that it has entered night.

[0113] Based on the above example, optionally, after determining whether it is night time according to the current time, the sunrise time of the day and the sunset time of the day, it also includes: a secondary judgment module, which is configured to: in response to determining that it is not night time, obtain the body light signal, and determine whether the body lights are turned on according to the body light signal; in response to the body lights being turned on, determine that it is night time; in response to the body lights being turned off, continue to determine that it is not night time.

[0114] Based on the above example, optionally, after determining whether it is night, the device also includes: a target reflectivity fixing module, configured to: in response to determining that it is not night, determine the target reflectivity to be a preset first reflectivity; in response to determining that it is night and the front light sensitivity value is greater than or equal to the light sensitivity threshold, determine the target reflectivity to be a preset first reflectivity.

[0115] Based on the above example, optionally, the device also includes: according to a preset first reflectivity adjustment module, it is configured to: in response to the start-up state of the light source corresponding to the interior rearview mirror being started, and / or the vehicle driving state being a reverse state, determine the target reflectivity as the preset first reflectivity, and adjust the reflectivity of the interior rearview mirror based on the target reflectivity.

[0116] Based on the above example, optionally, the proportional coefficient determination module 310 is further configured to: obtain the usage mode of the interior rearview mirror; in response to the interior rearview mirror being in anti-glare mode, determine the startup state of the light source corresponding to the interior rearview mirror; in response to the interior rearview mirror being in streaming mode, return to execute the operation of obtaining the usage mode of the interior rearview mirror until the interior rearview mirror is in anti-glare mode.

[0117] Based on the above example, optionally, the sensitivity coefficient determination module 320 is further configured to: use the ratio of the rear sensitivity value to the front sensitivity value of the interior rearview mirror as the sensitivity coefficient.

[0118] Based on the above example, optionally, the current photosensitivity determination module 330 is configured to: take the product of the photosensitivity coefficient and the proportional coefficient as a reference value; and determine the product of the reference value and the preset precision multiple as the current photosensitivity.

[0119] For the convenience of description, the above devices are described as being divided into various modules according to their functions. Of course, when implementing this application, the functions of each module can be implemented in the same or multiple software and / or hardware.

[0120] The device of the above embodiment is used to implement the corresponding rearview mirror anti-glare method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0121] Based on the same technical concept, corresponding to any of the above-mentioned embodiments and methods, this application also provides a rearview mirror anti-glare system. Figure 4 is a schematic structural diagram of a rearview mirror anti-glare system provided in an embodiment of this application. As shown in Figure 4, the system includes: a target light source, a light sensor, a gear system, a body control system, a cockpit system, and an interior rearview mirror system.

[0122] The target light source and light sensor are each connected to the body control system. The target light source corresponds to the interior rearview mirror and is used to transmit its activation status to the body control system. The light sensor is used to obtain a light signal from the body light and transmit it to the body control system. The body control system is connected to the interior rearview mirror system to transmit the activation status of the target light source to the interior rearview mirror system. The body control system is connected to the cockpit system to transmit the light signal from the body light to the cockpit system. The cockpit system determines whether night has arrived, i.e., the day / night state, based on the light signal from the body light, the current time, the sunrise time, and the sunset time. Furthermore, the cockpit system is connected to the interior rearview mirror system to transmit the day / night state to the interior rearview mirror system. The gear system is connected to the interior rearview mirror system to transmit whether the reverse gear is engaged to the interior rearview mirror system. This allows the interior rearview mirror system to determine a target reflectivity as a preset first reflectivity when the vehicle is in reverse and adjust the reflectivity of the interior rearview mirror based on the target reflectivity. The interior rearview mirror system can determine the proportional coefficient based on the front sensitivity value of the interior rearview mirror; determine the sensitivity coefficient based on the rear sensitivity value and the front sensitivity value of the interior rearview mirror; determine the current sensitivity multiple based on the sensitivity coefficient, the proportional coefficient and the preset accuracy multiple; determine the target reflectivity of the interior rearview mirror based on the current sensitivity multiple, and adjust the reflectivity of the interior rearview mirror based on the target reflectivity.

[0123] The system of the above embodiment is used to implement the corresponding rearview mirror anti-glare method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0124] Based on the same technical concept, corresponding to any of the above-mentioned embodiments and methods, the present application also provides an interior rearview mirror, including a memory, a processor, and a computer program stored in the memory and runnable on the processor. When the processor executes the program, the rearview mirror anti-glare method described in any of the above embodiments is implemented.

[0125] FIG5 shows a more specific schematic diagram of the hardware structure of an interior rearview mirror provided by this embodiment. 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, the memory 1020, the input / output interface 1030, and the communication interface 1040 are connected to each other within the device via the bus 1050.

[0126] The processor 1010 can be implemented using a general-purpose CPU (Central Processing Unit), a microprocessor, an 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.

[0127] The memory 1020 can be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage devices, dynamic storage devices, etc. The memory 1020 can store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 1020 and is called and executed by the processor 1010.

[0128] The input / output interface 1030 is used to connect input / output modules to implement information input and output. The input / output modules can be configured as components within the device (not shown in the figure) or can be externally connected to the device to provide corresponding functions. Input devices may include a keyboard, mouse, touch screen, microphone, various sensors, etc., and output devices may include a display, speaker, vibrator, indicator light, etc.

[0129] The communication interface 1040 is used to connect to a communication module (not shown) to enable communication between the device and other devices. The communication module can communicate via a wired method (such as USB, network cable, etc.) or a wireless method (such as mobile network, WiFi, Bluetooth, etc.).

[0130] The bus 1050 comprises a path for transmitting information between the various components of the device (eg, the processor 1010 , the memory 1020 , the input / output interface 1030 , and the communication interface 1040 ).

[0131] It should be noted that although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040, and the bus 1050, in a specific implementation, the device may also include other components necessary for normal operation. In addition, it will be understood by those skilled in the art that the above device may only include the components necessary to implement the embodiments of this specification, and does not necessarily include all the components shown in the figure.

[0132] The interior rearview mirror of the above embodiment is used to implement the corresponding rearview mirror anti-glare method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0133] Based on the same technical concept, the present application also provides a vehicle, wherein the vehicle includes an interior rearview mirror as described in the above embodiment.

[0134] Based on the same technical concept, corresponding to any of the above-mentioned embodiments, the present application also provides a computer-readable storage medium, which stores computer instructions, and the computer instructions are used to enable a computer to execute the rearview mirror anti-glare method described in any of the above embodiments.

[0135] The computer-readable media of this embodiment include permanent and non-permanent, removable and non-removable media that can be used to store information by any method or technology. The 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 technology, read-only compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0136] The computer instructions stored in the storage medium of the above embodiment are used to enable the computer to execute the rearview mirror anti-glare method described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0137] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. Within the scope of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0138] In addition, for simplicity of description and discussion, and in order not to make the embodiment of the application difficult to understand, the known power supply / ground connection with integrated circuit (IC) chip and other components may or may not be shown in the accompanying drawings provided. In addition, the device can be shown in the form of a block diagram to avoid making the embodiment of the application difficult to understand, and this also takes into account the following fact, that is, the details of the embodiment of these block diagram devices are highly dependent on the platform to be implemented in the embodiment of the application (that is, these details should be fully within the scope of understanding of those skilled in the art). When specific details (for example, circuit) are set forth to describe exemplary embodiments of the application, it will be apparent to those skilled in the art that the embodiment of the application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0139] Although the present invention has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those skilled in the art based on the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may utilize the embodiments discussed.

[0140] The embodiments of the present 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 the present application should be included in the scope of protection of this application.

Claims

1. A rearview mirror anti-glare method, characterized in that: include: Determine a proportionality coefficient according to the front light sensitivity value of the interior rearview mirror; wherein the proportionality coefficient is negatively correlated with the front light sensitivity value; Determining a photosensitivity coefficient according to the rear photosensitivity value of the interior rearview mirror and the front photosensitivity value; Determine the current photosensitivity multiple based on the photosensitivity coefficient, the proportional coefficient and the preset precision multiple; Determining a target reflectivity of the interior rearview mirror according to the current photosensitivity multiple, and adjusting the reflectivity of the interior rearview mirror based on the target reflectivity; The front 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.

2. The method according to claim 1, characterized in that Determining the target reflectivity of the interior rearview mirror according to the current photosensitivity multiple includes: In response to the current photosensitivity multiple being less than the first multiple, determining the target reflectivity to be a preset first reflectivity; In response to the current photosensitivity multiple being greater than or equal to the first multiple and less than the second multiple, determining a target reflectivity corresponding to the current photosensitivity multiple based on a preset correspondence between photosensitivity multiple and reflectivity; In response to the current photosensitivity multiple being greater than or equal to the second multiple, the target reflectivity is determined to be a preset second reflectivity; wherein the preset first reflectivity is greater than the preset second reflectivity.

3. The method according to claim 2, characterized in that Also includes: According to the first magnification, the second magnification, the preset first reflectivity and the preset second reflectivity, a corresponding relationship between the preset photosensitivity magnification and the reflectivity is determined.

4. The method according to claim 1, characterized in that: Determining the proportionality coefficient according to the front light sensitivity value of the interior rearview mirror includes: In response to the interior rearview mirror being in an anti-glare mode, determining an activation state of a light source corresponding to the interior rearview mirror; In response to the activation state being not activated, a proportionality coefficient is determined according to a front light sensitivity value of an interior rearview mirror.

5. The method according to claim 4, characterized in that The step of determining the activation state of the light source corresponding to the interior rearview mirror comprises: Determine whether it is night time based on the current time, the sunrise time of the day, and the sunset time of the day; In response to determining that it is night time and the front light sensitivity value is less than a light sensitivity threshold, an activation state of a light source corresponding to an interior rearview mirror is determined.

6. The method according to claim 5, characterized in that Determining whether it is night time according to the current time, the sunrise time of the day, and the sunset time of the day includes: Get the sunrise time and sunset time of the day; In response to the current time being between the sunrise time of the day and the sunset time of the day, it is determined that night has not yet arrived; In response to the current time being outside the sunrise time of the day and the sunset time of the day, it is determined that night has arrived.

7. The method according to claim 5, characterized in that After determining whether it is night time according to the current time, the sunrise time of the day, and the sunset time of the day, the method further includes: In response to determining that it is not night, obtaining a vehicle body light signal, and determining whether the vehicle body light is turned on according to the vehicle body light signal; In response to the vehicle body light being turned on, it is determined that it is entering night; In response to the vehicle body lamp being turned off, it is determined that night has not yet arrived.

8. The method according to claim 5, characterized in that After determining whether it is night, the method further includes: In response to determining that it is not night, determining the target reflectivity to be a preset first reflectivity; In response to determining that it is night time and the front light sensitivity value is greater than or equal to the light sensitivity threshold, the target reflectivity is determined to be the preset first reflectivity.

9. The method according to claim 4, characterized in that Also includes: In response to the start-up state of the light source corresponding to the interior rearview mirror being started, and / or the vehicle driving state being a reverse state, the target reflectivity is determined to be a preset first reflectivity, and the reflectivity of the interior rearview mirror is adjusted based on the target reflectivity.

10. The method according to claim 4, characterized in that In response to the interior rearview mirror being in the anti-glare mode, determining the activation state of the light source corresponding to the interior rearview mirror comprises: Obtaining a usage mode of the interior rearview mirror; In response to the interior rearview mirror being in an anti-glare mode, determining an activation state of a light source corresponding to the interior rearview mirror; In response to the interior rearview mirror being in the streaming media mode, the operation of obtaining the usage mode of the interior rearview mirror is returned to be executed until the interior rearview mirror is in the anti-glare mode.

11. The method according to claim 1, characterized in that: The determining of the sensitivity coefficient according to the rear sensitivity value and the front sensitivity value of the interior rearview mirror includes: The ratio of the rear light sensitivity value of the interior rearview mirror to the front light sensitivity value is used as the light sensitivity coefficient.

12. The method according to claim 1, characterized in that The determining of the current photosensitivity multiple based on the photosensitivity coefficient, the proportional coefficient and the preset precision multiple includes: Taking the product of the sensitivity coefficient and the proportionality coefficient as a reference value; The product of the reference value and the preset precision multiple is determined as the current photosensitivity multiple.

13. A rearview mirror anti-glare device, characterized in that: include: A processor, the processor being configured to execute the following program modules stored in the memory: The proportional coefficient determination module is configured to: determine the proportional coefficient according to the front light sensitivity value of the interior rearview mirror; wherein the proportional coefficient is negatively correlated with the front light sensitivity value; A sensitivity coefficient determination module is configured to: determine the sensitivity coefficient according to the rear sensitivity value and the front sensitivity value of the interior rearview mirror; A current photosensitivity multiple determination module is configured to: determine the current photosensitivity multiple based on the photosensitivity coefficient, the proportional coefficient and a preset precision multiple; A reflectivity adjustment module is configured to: determine a target reflectivity of the interior rearview mirror according to the current photosensitivity multiple, and adjust the reflectivity of the interior rearview mirror based on the target reflectivity; The front 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.

14. A vehicle interior 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, the rearview mirror anti-glare method as described in any one of claims 1 to 12 is implemented.

15. A vehicle, characterized in that: The vehicle includes the interior rearview mirror of claim 14.

Images