CN116758876A - Automobile day and night mode automatic adjustment method, device and vehicle - Google Patents

Abstract

This application discloses a method, device and vehicle for automatically adjusting the day and night mode of a car, including: acquiring the current ambient light brightness; comparing the acquired current ambient light brightness with a preset brightness threshold; when the current ambient light brightness is greater than or equal to the preset brightness threshold, then the control switches to day mode; when the current ambient light brightness is less than the preset brightness threshold, and the obtained current geographical location information of the car and the local sunrise corresponding to the geographical location information If the sunset information and precise location information meet the conditions for activating the dark night mode, the dark night mode is controlled to be activated. This application can solve the problem of single switching basis and poor user experience. Through comprehensive analysis of light sensors, communication modules, spherical satellite navigation system modules, and local sunrise and sunset information, it can achieve seamless switching and allow users to experience a high-quality experience.

Description

Automobile day and night mode automatic adjustment method, device and vehicle

Technical field

The present application relates to the field of vehicle assisted driving technology, and in particular to an automatic day and night mode adjustment method, device and vehicle for a car.

Background technique

As cars become increasingly intelligent, the number of screens installed in cars is gradually increasing. In addition to instruments and central control screens, passenger screens, head-up displays (HUD), rear cabin entertainment screens, etc. are also added. In order to enable drivers and passengers to adapt to the environment Brightness, most of its display theme modes have day and night modes, as well as brightness switching. The difference between night mode and daytime mode is the contrast part. It will adjust the overall background color to a darker color (mainly black). In this way, users will not feel dazzled by the difference in brightness when viewing or operating the cockpit display in a dark environment.

A common approach in the existing technology is to dynamically adjust based on time and automatically switch to dark night mode at night (7 o'clock). However, this solution cannot fully cover the time differences in various places. For example, in some places, the time difference has already entered at 4 o'clock in the afternoon in winter. At night, it is obviously unreasonable to still display the day mode at this time; that is, in the current technology, a single indicator is used to switch between day and night mode. The switching node is rigid, the mode is relatively single, and the user experience is not good.

Contents of the invention

The main purpose of this application is to provide a method, device, vehicle and storage medium for automatically adjusting the day and night mode of a car, so as to solve the problem in the current technology of using a single indicator to switch between day and night mode. The switching node is rigid, the mode is relatively single, and the user experience is poor. A problem of bad perception.

A first aspect embodiment of the present application provides a method for automatically adjusting the day and night mode of a car, including the following steps: acquiring the current ambient light brightness; comparing the acquired current ambient light brightness with a preset brightness threshold; when the current ambient light brightness If the brightness is greater than or equal to the preset brightness threshold, the control switches to daytime mode; when the current ambient light brightness is less than the preset brightness threshold, the current geographical location information of the car and the local location corresponding to the geographical location information are further obtained. Sunrise and sunset information, and precise location information; when the current ambient light brightness is less than the preset brightness threshold, and the obtained current geographical location information of the car, and the local sunrise and sunset information corresponding to the geographical location information, and precise If the location information meets the conditions for activating the dark mode, the dark mode is controlled to be activated.

According to the above technical means, the embodiments of the present application can realize the comprehensive analysis of the current ambient light brightness of the car, the current geographical location information of the car, the local sunrise and sunset information corresponding to the geographical location information, and the precise location information to obtain the current optimal location of the car. The real operating scene environment enables seamless switching between day mode and night mode, allowing users to experience a high-quality experience.

Optionally, in one embodiment of the present application, when the current ambient light brightness is less than a preset brightness threshold, the current geographical location information of the car and the local sunrise and sunset information corresponding to the geographical location information are further obtained, And precise location information, including: when the current ambient light brightness is less than the preset brightness threshold, obtaining the car's current geographical location information and current time information through the vehicle's communication module; and obtaining precise positioning through the global satellite navigation system module information.

According to the above technical means, the embodiments of the present application can use the existing hardware equipment of the car to easily obtain the current geographical location information and current time information of the car, as well as the precise positioning information, without additional hardware costs.

When switching to day mode, the specific displayed background light brightness value is adjusted according to the current ambient light brightness; when switching to night mode, the specific displayed background light brightness value is adjusted according to the current ambient light brightness.

According to the above technical means, the embodiments of the present application not only realize the senseless switching between day mode and night mode, but also enable the background light brightness value in day mode and night mode to be fine-tuned according to the current ambient light brightness, making the display more convenient for users to see. clear.

Optionally, in an embodiment of the present application, when the current ambient light brightness is less than a preset brightness threshold, and the obtained current geographical location information of the car and the local sunrise and sunset information corresponding to the geographical location information , and the precise location information meets the conditions for starting the dark night mode, then the control starts the dark night mode, including: based on the obtained current geographical location information of the car, retrieving the sunrise and sunset database corresponding to the current geographical location information to confirm the local sunset time; based on The obtained car's current geographical location information, current time information, and local sunset time are used to determine whether the car's current geographical location corresponding to the current time information is at sunset night time; if it is at sunset night time, switch the car's current mode control to Dark mode.

According to the above technical means, the embodiment of the present application can very accurately determine whether the current geographical location of the car corresponds to the current time information by obtaining the current geographical location information of the car and the current time information, as well as the local sunset time corresponding to the sunrise and sunset database. In the night time of sunset, it is convenient to switch to dark mode in time.

Optionally, in one embodiment of the present application, based on the acquired current geographical location information of the car, the current time information, and the local sunset time, it is determined whether the current geographical location of the car corresponding to the current time information is in the night time of sunset, Including: if the current time information T＞10, and the current time information T＞sunset time, it is determined that the current geographical location of the car corresponding to the current time information is at the night time of sunset; if the current time information T＜10, and the sunset time＜current time information T+24≤sunrise time+24, then it is determined that the current geographical location of the car corresponding to the current time information is at sunset night time.

According to the above technical means, the embodiment of the present application can accurately determine whether the current geographical location of the car corresponding to the current time information is in the night time of sunset based on the current geographical location information of the car, the current time information, and the local sunset time, which is more conducive to implementation No sense switching.

Optionally, in an embodiment of the present application, when the current ambient light brightness is less than a preset brightness threshold, and the obtained current geographical location information of the car and the local sunrise and sunset information corresponding to the geographical location information , and the precise location information meets the conditions for activating the dark night mode, then control the activation of the dark night mode, including: based on the obtained current precise positioning information of the car, determining whether the car is currently on the road or under a building; when determining the current location of the car based on the current precise positioning information of the car In a building, switch the car's current mode control to dark mode.

According to the above technical means, in this embodiment of the present application, if it is determined that the car is currently in a building based on the current precise positioning information of the car, the current mode control is switched to the dark mode to achieve an accurate and senseless switch.

Optionally, in one embodiment of the present application, determining whether the car is currently on the road or under a building based on the obtained current precise positioning information of the car includes: when determining that the car is currently on the following road or building based on the current precise positioning information of the car. In the tunnel, the current vehicle speed v is obtained, and the tunnel length s and its congestion coefficient y are obtained through the cloud platform, and the vehicle exit time t=s/v*y is calculated; the calculated vehicle exit time t is Compare with a set threshold time tmin to determine whether the calculated time t for the vehicle to exit the tunnel is greater than the set threshold time tmin; when the calculated time t for the vehicle to exit the tunnel is greater than the set threshold time tmin, then The car's current mode control is switched to night mode; when the calculated vehicle exiting the tunnel time t is less than or equal to the set threshold time tmin, the car's current mode control is switched to day mode.

According to the above technical means, the embodiment of the present application can accurately calculate the time for the vehicle to exit the tunnel when the vehicle passes through the tunnel, and determine whether to control the switching display mode based on the length of time for the vehicle to exit the tunnel to achieve a reasonable switch. Short tunnels can avoid frequent switching.

Optionally, in one embodiment of the present application, determining whether the car is currently on the road or under a building based on the obtained current precise positioning information of the car includes: when the car is not currently on the road or in a building. , then it is judged whether the current ambient brightness L is less than the set minimum brightness value; when the car is not currently in the road or building, and the current ambient brightness L is less than the set minimum brightness value, the control enters the dark mode; when the car When you are not currently in a road or building, and the current ambient brightness L is greater than the set minimum brightness value, the control enters day mode.

According to the above technical means, the embodiment of the present application can directly determine whether to control the car to enter the dark mode based on two brightness values when not in the road or building. The reference factors for mode switching are more detailed, achieving a more convenient and high-quality user experience. Insensitive switching.

A second embodiment of the present application provides an automatic day and night mode adjustment device for a car, including: an ambient light brightness acquisition module for acquiring the current ambient light brightness; and an ambient light brightness comparison module for comparing the acquired current ambient light brightness with a preset Compare the set brightness threshold; the day mode control module is used to control the switch to the day mode when the current ambient light brightness is greater than or equal to the preset brightness threshold; the information acquisition module is used to control the switch to the day mode when the current ambient light brightness is greater than or equal to the preset brightness threshold; If the light brightness is less than the preset brightness threshold, then further obtain the car's current geographical location information, local sunrise and sunset information corresponding to the geographical location information, and precise location information; the comprehensive control module, when the current ambient light brightness is less than the preset If the brightness threshold is set, and the obtained current geographical location information of the car, the local sunrise and sunset information corresponding to the geographical location information, and the precise location information meet the conditions for activating the dark night mode, then the dark night mode is controlled to be activated.

Optionally, the information acquisition module includes:

The first acquisition unit is used to acquire the current geographical location information and current time information of the car through the communication module of the vehicle when the current ambient light brightness is less than the preset brightness threshold;

The second acquisition unit is used to acquire precise positioning information through the global satellite navigation system module.

Optionally, the comprehensive control module includes:

A switching control unit based on the geographical location information is used to retrieve the sunrise and sunset database corresponding to the current geographical location information based on the obtained current geographical location information of the car to confirm the local sunset time; based on the obtained current geographical location information of the vehicle and the current Time information and local sunset time are used to determine whether the current geographical location of the car corresponding to the current time information is at sunset night time; if it is at sunset night time, switch the car's current mode control to dark night mode;

A switching control unit based on precise positioning information is used to determine whether the car is currently on the road or under a building based on the obtained current precise positioning information of the car; when it is determined that the car is currently in a building based on the current precise positioning information of the car, the current positioning information of the car is determined. Mode control switches to dark mode;

The on-road speed measurement switching control unit is used to obtain the current vehicle speed v when it is determined that the car is currently in the on-road based on the current precise positioning information of the car, and control the acquisition of the tunnel length s and its congestion coefficient y through the cloud platform, and calculate the vehicle speed Tunnel exit time t=s/v*y; compare the calculated vehicle exit tunnel time t with a set threshold time tmin, and determine whether the calculated vehicle exit tunnel time t is greater than the set threshold time tmin ; When the calculated time t of the vehicle exiting the tunnel is greater than the set threshold time tmin, the current mode control of the car is switched to dark mode; when the calculated time t of the vehicle exiting the tunnel is less than or equal to the set threshold time tmin, Then switch the current mode control of the car to day mode.

The auxiliary switching control unit is used to determine whether the current ambient brightness L is less than the set minimum brightness value when the car is not currently in the road or building; when the car is not currently in the road or building, and the current If the ambient brightness L is less than the set minimum brightness value, the control enters the night mode; when the car is not currently on the road or in a building, and the current ambient brightness L is greater than the set minimum brightness value, the control enters the day mode.

A third embodiment of the present application provides a vehicle, including: a memory, a processor, and a computer program stored on the memory and executable on the processor. The processor executes the program to implement the above. Automobile day and night mode automatic adjustment method described in the embodiment.

A first embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores a program for an automatic adjustment method for day and night modes of automobiles. When the program for automatic adjustment of day and night modes of automobiles is executed by a processor, the above-mentioned methods are implemented. The steps of the automatic day and night mode adjustment method for automobiles described in the embodiment.

Beneficial effects of this application:

This application can realize comprehensive analysis based on the current ambient light brightness of the car, the current geographical location information of the car, the local sunrise and sunset information corresponding to the geographical location information, and the precise location information to obtain the most realistic operating scene environment of the car, thereby realizing The seamless switching between day mode and night mode allows users to experience a high-quality experience. The embodiments of the present application not only realize the senseless switching between day mode and night mode, but also enable the background light brightness value in day mode and night mode to be fine-tuned according to the current ambient light brightness, making the display more convenient for users to see clearly.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Description of the drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the purpose of the present application. For some embodiments, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic flowchart of a method for automatically adjusting a car's day and night mode provided by an embodiment of the present application.

Figure 2 is a schematic diagram of the judgment process based on geographical location information of the automatic day and night mode adjustment method for automobiles provided by the embodiment of the present application.

Figure 3 is a schematic flowchart of the tunnel measurement process judgment process of the automatic day and night mode adjustment method for automobiles provided by the embodiment of the present application.

Figure 4 is a schematic flowchart of two brightness parameter determination processes of the automatic day and night mode adjustment method for automobiles provided by the embodiment of the present application.

Figure 5 is a schematic structural diagram of the brightness characteristic curves of the instrument and central control screen in the day and night modes of the automatic day and night mode adjustment method for automobiles provided by the embodiment of the present application.

Figure 6 is a schematic structural diagram of an automatic day and night mode adjustment device for a car provided by an embodiment of the present application.

Figure 7 is a functional block diagram of the internal structure of a vehicle provided by an embodiment of the present application.

Detailed ways

The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, but should not be construed as limiting the present application.

The following describes the automatic day and night mode adjustment method and device for automobiles according to embodiments of the present application with reference to the accompanying drawings. Regarding the current technology mentioned in the background technology center above, a single indicator is used to switch between day and night modes. The switching node is rigid, the mode is relatively single, and the user experience is not good.

In response to the above problems, this application provides a method for automatically adjusting the day and night mode of a car. It first refers to the ambient light brightness value for analysis, and then refers to the geographical location information, UTC time (Coordinated Universal Time), and GNSS (Global Navigation Satellite System) to obtain accurate Comprehensive analysis is carried out based on the location, etc., and the car's switching between night mode and day mode is controlled based on the analysis results.

Example methods

As shown in Figure 1, Figure 1 is a schematic flow chart of an automatic adjustment method for day and night modes of automobiles provided by an embodiment of the present application. Specifically, an embodiment of the present application provides an automatic adjustment method of day and night modes of automobiles, which can be deployed on a vehicle controller. , used to automatically switch between car night mode and day mode. As shown in Figure 1, the car's day and night mode automatic adjustment method includes the following steps:

Step S100: Obtain the current ambient light brightness;

The embodiment of this application mainly realizes the automatic and unified adjustment of the background light brightness of each display in the car. The objects of adjustment mainly include car display screens, such as instruments, central control screen, passenger screen, HUD (head-up display), rear cabin entertainment screen, etc. And the dark mode also controls the front and rear lights of the car. During specific implementation, the current ambient light brightness can be obtained in real time through a light sensor installed on the car.

For example, the ambient light brightness ranges from 30,000 to 130,000 lux on a sunny day, 100 to 1,000 lux indoors on a sunny day, 3,000 lux to 10,000 lux on a cloudy day, 50 lux to 500 lux outdoors on a cloudy day, 5 to 50 lux indoors on a cloudy day, etc. Among them, lux is the unit of illumination. 1 lux is equal to the illumination of 1 flow (lumen, lm) of light evenly distributed on an area of 1㎡.

Step S200: Compare the acquired current ambient light brightness with a preset brightness threshold;

It can be understood that the embodiment of the present application requires a brightness threshold Lm to be set in the vehicle system in advance. The brightness threshold Lm can be set according to real-time conditions, for example, set to 200 lux. During actual execution, this application compares the obtained current ambient light brightness with a preset brightness threshold to determine whether the car's operating mode is day mode or night mode based on the comparison result.

Step S300: When the current ambient light brightness is greater than or equal to the preset brightness threshold, control is switched to day mode;

It can be understood that the embodiment of the present application first refers to the current ambient light brightness data before switching between the night mode and the day mode. When the acquired current ambient light brightness is greater than or equal to the preset brightness threshold, that is, if the current ambient light brightness When the brightness reaches the brightness threshold of day mode, it can be controlled to switch directly to day mode.

Step S400: When the current ambient light brightness is less than the preset brightness threshold, further obtain the current geographical location information of the car, the local sunrise and sunset information corresponding to the geographical location information, and the precise location information.

It can be understood that in the embodiment of the present application, if the current ambient light brightness is less than the preset brightness threshold, the car's current geographical location information, local sunrise and sunset information corresponding to the geographical location information, and precise location information can be further obtained; In a specific embodiment, the current geographical location information and current time information of the car can be obtained through the communication module (CM) installed on the vehicle; and the precise positioning information can be obtained through the global satellite navigation system module. Among them, the current geographical location information can be a district and county-level positioning, such as a city A, a district B, etc., and the current time information can be the local time information T taking the hour, for example, 20:10 taking 20.

In this way, according to the above technical means, the embodiments of the present application can use the existing hardware equipment of the car to easily obtain the current geographical location information and current time information of the car, as well as the precise positioning information, without additional hardware costs.

Step S500: When the current ambient light brightness is less than the preset brightness threshold, and the obtained current geographical location information of the car, the local sunrise and sunset information corresponding to the geographical location information, and the precise location information meet the conditions for activating the dark night mode , then control the activation of dark mode.

It can be understood that in the embodiment of the present application, when the current ambient light brightness is less than the preset brightness threshold, the current geographical location information of the car, the local sunrise and sunset information corresponding to the geographical location information, and the precise location information are further considered for synthesis. Analyze to see if it meets the conditions for activating dark mode. In specific implementation, as long as there is one condition that meets the conditions for starting the dark night mode, the dark night mode is controlled to be started. Assume that the preset brightness threshold is 200lux, and the current ambient light brightness is lower than the threshold. This application can further consider the current geographical location information of the car and the local sunrise and sunset information corresponding to the geographical location information to determine whether the conditions for activating the dark night mode are met.

For example, assuming that the current geographical location of the car is city B in country A, this embodiment can query the local sunrise and sunset timetable and obtain the sunrise time and sunset time of the day. Assume that the sunrise time of the day is 6 am and the sunset time is 8 pm. Then, it can be combined with the current time to determine whether it is in the dark mode period. If the current time is within the time range after sunset and before sunrise (i.e. 8 pm to 6 am), it can be considered to be in dark night mode.

Finally, the embodiments of this application can also be combined with precise location information for further analysis. For example, if the current precise location of the car is along the road or under a building (such as a garage), and there is insufficient light, the dark mode can be activated to provide better visibility and driving experience.

It can be seen from the above that the embodiment of the present application can realize the comprehensive analysis of the current ambient light brightness of the car, the current geographical location information of the car, the local sunrise and sunset information corresponding to the geographical location information, and the precise location information to obtain the most realistic current situation of the car. operating scene environment, thereby achieving precise switching between day mode and night mode, allowing users to experience a high-quality experience.

Optionally, in one embodiment of the present application, during specific execution, the brightness threshold Lm is first set in the vehicle's on-board system. When the vehicle is started and the vehicle is powered on, the day and night theme mode is set to the automatic day and night mode, and the ambient light brightness L is obtained in real time through the light sensor set on the vehicle. The vehicle-machine system side makes a judgment based on the ambient light brightness L obtained in real time to confirm whether the ambient light brightness L currently obtained in real time is greater than the set brightness threshold Lm. If L<Lm, enter the next judgment link (that is, enter the current geographical location of the car) information, as well as the local sunrise and sunset information corresponding to the geographical location information, and the comprehensive analysis of precise location information), this sub-process ends; if the ambient light brightness L currently obtained in real time > the set brightness threshold Lm, then Determined to be daytime mode, the instrument determines whether the current mode can be switched to daytime mode; if so, it will send out a theme mode switching signal and switch to daytime mode theme; if not, it will prompt the corresponding reason. When the restrictions are lifted, it will switch to daytime mode. , at the same time, confirm whether the instrument is in day mode. If not, switch the current theme mode to day mode.

Optionally, in one embodiment of the present application, with reference to Figure 2, when the current ambient light brightness is less than a preset brightness threshold, the car's current geographical location information and the corresponding local sunrise and sunset can be further used. information to determine whether to activate night mode or day mode, as follows:

S11. Based on the obtained current geographical location information of the car, retrieve the sunrise and sunset database corresponding to the current geographical location information to confirm the local sunset time;

In the embodiment of the present invention, the geographical location information (district and county level positioning, such as district A, city B) and local time information T (T is the hour, such as 20:10) can be obtained through the CM (communication module) of the vehicle. Take 20). And call the sunrise and sunset database API to confirm the local sunset (night) time.

S12. Based on the obtained current geographical location information of the car, the current time information, and the local sunset time, determine whether the current geographical location of the car corresponding to the current time information is in the night time of sunset;

S13. If it is night time at sunset, switch the current mode control of the car to dark mode.

That is, in this embodiment, it is assumed that the current geographical location information of the car is city A, and the acquired sunset time is 18:30. The current time is 21:00. Then, based on the current geographical location information and the current time, it can be determined whether the current time is at sunset night time. If the current time is later than or equal to the sunset time, it can be regarded as the sunset night time. In this example, the current time is 21:00 and the sunset time is 18:30, so the current time is later than the sunset time and can be determined as the night time of sunset. In this embodiment, according to the judgment result, the current mode control of the car can be switched to the dark mode to adapt to the night driving environment. Dark mode may include dimming interior lights, adjusting dashboard brightness, adjusting navigation screen brightness, etc. to provide better visibility and driving experience.

In this way, according to the above technical means, this embodiment can very accurately determine whether the current geographical location of the car corresponds to the current time information through the obtained current geographical location information and current time information of the car, as well as the local sunset time corresponding to the sunrise and sunset database. In the night time of sunset, it is convenient to switch to dark mode in time.

Optionally, in one embodiment of the present application, regarding when the current ambient light brightness is less than a preset brightness threshold and whether the current time information corresponding to the car's current geographical location is in the night time of sunset, it specifically includes: if If the current time information T＞10, and the current time information T＞sunset time, then it is determined that the current geographical location of the car corresponding to the current time information is at the night time of sunset; if the current time information T＜10, and the sunset time＜current time information T+24 ≤ sunrise time + 24, then it is determined that the current geographical location of the car corresponding to the current time information is at sunset night time.

For example, assume the current time is 21:30, the sunset time is 18:00, and the sunrise time is 6:00. According to the first condition, the current time information T>10 and T>sunset time. In this example, 21:30 is both greater than 10 and greater than 18:00, which meets the conditions. Therefore, it can be determined that the current geographical location of the car corresponding to the current time information is at sunset night time.

According to the second condition, the current time information T < 10 and the sunset time < T + 24 ≤ sunrise time + 24. For example, if the sunset time is 19 o'clock and the current time is 3 o'clock in the morning, then T=3+24=27>19, which is night and enters dark night mode. Therefore, it can be determined that the current geographical location of the car corresponding to the current time information is at sunset night time.

In both cases, it can be determined that the current geographical location of the car corresponding to the current time information is at sunset night time. Then the current mode control of the car can be switched to dark mode to adapt to the night driving environment.

It can be seen from the above that the embodiment of the present application can accurately determine whether the current geographical location of the car corresponding to the current time information is in the night time of sunset based on the current geographical location information of the car, the current time information, and the local sunset time, which is more conducive to the realization of wireless communication. Sense switch.

Optionally, in one embodiment of the present application, when the current ambient light brightness is less than the preset brightness threshold, it can also be determined whether to activate the dark mode through the car's precise positioning information, as follows:

Based on the obtained current precise positioning information of the car, it is determined whether the car is currently on the road or under a building; when it is determined that the car is currently in a building based on the current precise positioning information of the car, the current mode control of the car is switched to dark mode. Assuming that the current ambient light brightness detected by the current car is 80, it is further determined whether the current positioning information of the car is on the road or under a building. If the current positioning information of the car is confirmed to be in a building according to the map library, the control will The mode switches to dark mode. In this way, this application determines that the car is currently in a building through the car's current precise positioning information, and then switches the current mode control to dark mode to achieve accurate and senseless switching.

Optionally, in one embodiment of the present application, as shown in Figure 3, when the current ambient light brightness of the car is less than the preset brightness threshold, when the car is detected to be following the road through the car's current precise positioning information, the specific steps include the following: step:

Step S21: When it is determined that the car is currently in the lane based on the car's current precise positioning information, the current car speed v is obtained, and the tunnel length s and its congestion coefficient y are obtained through the cloud platform, and the vehicle exit time t=s is calculated. /v*y;

Step S22: Compare the calculated time t for the vehicle to exit the tunnel with a set threshold time tmin, and determine whether the calculated time t for the vehicle to exit the tunnel is greater than the set threshold time tmin;

Step S23: When the calculated time t for the vehicle to exit the tunnel is greater than the set threshold time tmin, the current mode control of the car is switched to dark mode;

Step S24: When the calculated time t for the vehicle to exit the tunnel is less than or equal to the set threshold time tmin, the current mode control of the car is switched to daytime mode.

An example in this embodiment is as follows: assuming that the car is currently in a tunnel, and the obtained current car speed is 60km/h. The length of the tunnel obtained through the cloud platform is 500 meters, and the congestion coefficient is 0.8. Based on the data obtained, the time it takes for the vehicle to exit the tunnel can be calculated. First, convert the vehicle speed into meters/second, 60km/h=16.67m/s. Then according to the formula t=s/v*y, where s is the tunnel length, v is the vehicle speed, and y is the congestion coefficient. Bringing in the data for calculation, t=500/16.67*0.8≈24 seconds. Next, the calculated time t for the vehicle to exit the tunnel is compared with the set threshold time tmin. Assume that the set threshold time tmin is 5 seconds. In this example, the calculated time t for the vehicle to exit the tunnel is 24 seconds, which is 5 seconds greater than the set threshold time tmin. Therefore, based on the comparison result, it can be judged that the calculated time t for the vehicle to exit the tunnel is greater than the set threshold time tmin.

Based on the judgment results, the car's current mode control can be switched to dark mode to provide dark mode lights and dashboard brightness to adapt to the dark night driving environment.

And if the vehicle exits the tunnel time t, for example, 3 seconds according to the judgment result, which is less than the set threshold time tmin of 24 seconds, the current mode control of the car can be switched to day mode to provide lights and dashboard brightness suitable for day mode, adapting Driving environment during the day. According to the above technical means, the embodiment of the present application can accurately calculate the time for the vehicle to exit the tunnel when the vehicle passes through the tunnel, and determine whether to control the switching display mode based on the length of time for the vehicle to exit the tunnel to achieve a reasonable switch. Short tunnels can avoid frequent switching.

And by obtaining the vehicle's current precise positioning information and combining it with cloud platform data, the time for the vehicle to exit the tunnel can be calculated based on real-time conditions. This can more accurately determine whether to switch modes, improving driving experience and safety.

Depending on the tunnel length and congestion coefficient, it can better adapt to different driving environments. If the tunnel is long or the congestion is severe, switching to night mode can reduce glare and provide better visibility; if the tunnel is short or the congestion is not severe, switching to day mode can maintain brightness and clarity and avoid excessive dimming that may cause vision problems. Troubled.

Automatic switching mode can reduce the driver's operational burden and provide a more convenient driving experience. The driver does not need to manually adjust the mode, the system will automatically switch according to real-time conditions, improving driving comfort and convenience.

Optionally, in one embodiment of the present application, as shown in Figure 4, when the current ambient light brightness of the car is less than the preset brightness threshold, and the car is not currently in the road or building, the situation also includes the following: Processing steps:

Step S31: When the car is not currently on the road or in a building, determine whether the current ambient brightness L is less than the set minimum brightness value;

Step S32: When the car is not currently on the road or in a building, and the current ambient brightness L is less than the set minimum brightness value, control enters the dark night mode;

Step S33: When the car is not currently on the road or in a building, and the current ambient brightness L is greater than the set minimum brightness value, the control enters the daytime mode.

In this embodiment, precise positioning information can be obtained through the GNSS (Global Navigation Satellite System) module, and the GNSS vehicle-machine system can be used to determine whether it is on the road or under a building (such as a garage). If not, it is determined whether the current environment brightness L Less than the set minimum brightness value Lmin (Lmin is the set minimum brightness value (which exists in situations such as solar eclipses and cloudy days when the brightness is extremely low even though it is daytime). If it is, it will enter the dark night mode and the process will end; if not , then enters the day mode, and the process ends. In this way, the present invention can provide better visibility and driving experience, and directly determine whether the control car enters the night mode based on the two brightness values. The reference factors for mode switching are more detailed, achieving a more detailed Convenient for users to experience seamless switching.

Optionally, in another embodiment of the present application, when switching to day mode, the specific displayed background light brightness value is adjusted according to the current ambient light brightness of day mode; when switching to night mode, the specific displayed background light value The brightness value is adjusted according to the current ambient light brightness in dark mode. During specific implementation, as shown in Table 1 below, this application can divide the daytime mode into multiple main brightness levels, and these levels have a corresponding relationship with each obtained ambient light brightness. For example, the ambient light brightness in the daytime mode is 200-130000lux. The corresponding main brightness level is 1-100, and the corresponding daytime mode brightness of the display is 100-1000cd/m ² (candela/square meter, which is the unit of brightness); and similarly, this application divides the night mode into multiple main brightness levels , the ambient light brightness in dark night mode is 1-199lux, the corresponding main brightness level is 1-100, and the corresponding brightness of the display in night (dark night) mode is 20-200cd/m ² (candela/square meter, which is the brightness unit).

Table 1:

As can be seen from the above table, in the embodiment of this application, two sets of "brightness level-brightness value" calibrations are set for the day and night modes (that is, under the same brightness level, the day mode and the night mode correspond to two brightness values respectively) , the calibration table of "Brightness Level—Display Day Mode/Night Mode Brightness Value" is shown in the table above.

Specifically, for example, as shown in Table 1 above, when the daytime mode ambient light brightness is 200lux, the corresponding main brightness level is 1, and the corresponding daytime mode brightness of the display screen is 100cd/m ² (candela/square meter, which is the brightness unit); for example When the daytime mode ambient light brightness is 130000lux, the corresponding main brightness level is 100, and the corresponding display screen daytime mode brightness is 1000cd/m ² (candela/square meter, which is the brightness unit) during the day. When the daytime mode ambient light brightness is 64900lux , the corresponding main brightness level is 50, and the corresponding daytime mode brightness of the display is 316cd/m ² (candela/square meter, which is the brightness unit); for example, when the daytime mode ambient light brightness is 130000lux, the corresponding main brightness level is 100, and the corresponding The daytime mode brightness of the display is 1000cd/m ² (candela/square meter, which is a unit of brightness) and is the brightest during the day.

If the car is currently in dark night mode, the obtained ambient light brightness is 199lux, the corresponding main brightness level is 100, and the corresponding display night (dark night) mode brightness is 200cd/m ² (brightest at night).

In this embodiment, the brightness characteristic curves of the instrument and central control screen in day mode and night mode are as shown in Figure 5. The specific brightness value items of each item are fine-tuned based on this characteristic curve according to the actual situation.

According to the above technical means, the embodiments of the present application not only realize the senseless switching between day mode and night mode, but also enable the background light brightness value in day mode and night mode to be fine-tuned according to the current ambient light brightness, making the display more convenient for users to see. Clear to provide better visibility and driving experience.

In all the above embodiments of this application, when switching to the dark night mode, it will also detect and determine whether the vehicle headlights are turned on. If they are turned on, the process will end, and the brightness will be determined again after a certain period of time; if they are not turned on, the user will be prompted: Please Turn on the headlights or set them to automatically turn on the headlights, record the situation in a log, and upload it to the platform to analyze the reasons. In the embodiment of this application, the main purpose of determining whether to turn on the headlights is to enhance the robustness of this mode change. When the environment is dark, the present invention will remind the car owner to turn on the lights or the vehicle will automatically turn on the lights. If they are not turned on, there will be no entry. In dark night mode, you need to upload special situation records and bury data for subsequent analysis and iterative optimization.

In summary, the automatic day and night mode adjustment method for automobiles proposed in the embodiments of this application can be integrated based on the current ambient light brightness of the car, the current geographical location information of the car, the local sunrise and sunset information corresponding to the geographical location information, and the precise location information. Through analysis, the most realistic current operating scene environment of the car is obtained, thereby realizing seamless switching between day mode and night mode, allowing users to experience a high-quality experience. The embodiments of the present application not only realize the senseless switching between day mode and night mode, but also enable the background light brightness value in day mode and night mode to be fine-tuned according to the current ambient light brightness, making the display more convenient for users to see clearly.

Exemplary device

As shown in Figure 6, corresponding to the above-mentioned automatic day and night mode adjustment method for a car, embodiments of the present application also provide an automatic day and night mode adjustment device 10 for a car, which includes:

The ambient light brightness acquisition module 610 is used to acquire the current ambient light brightness;

The ambient light brightness comparison module 620 is used to compare the obtained current ambient light brightness with a preset brightness threshold;

The day mode control module 630 is used to control switching to day mode when the current ambient light brightness is greater than or equal to a preset brightness threshold;

The information acquisition module 640 is used to further obtain the current geographical location information of the car, the local sunrise and sunset information corresponding to the geographical location information, and the precise location information when the current ambient light brightness is less than the preset brightness threshold;

Integrated control module 650: When the current ambient light brightness is less than the preset brightness threshold, and the obtained current geographical location information of the car, the local sunrise and sunset information corresponding to the geographical location information, and the precise location information are consistent with starting the dark night Mode conditions, control the activation of dark mode, as detailed above.

Optionally, in one embodiment of this application, the information acquisition module includes:

The first acquisition unit is used to acquire the current geographical location information and current time information of the car through the communication module of the vehicle when the current ambient light brightness is less than the preset brightness threshold;

The second acquisition unit is used to acquire precise positioning information through the global satellite navigation system module.

Optionally, in one embodiment of the present application, the comprehensive control module includes:

A switching control unit based on the geographical location information is used to retrieve the sunrise and sunset database corresponding to the current geographical location information based on the obtained current geographical location information of the car to confirm the local sunset time; based on the obtained current geographical location information of the vehicle and the current Time information and local sunset time are used to determine whether the current geographical location of the car corresponding to the current time information is at sunset night time; if it is at sunset night time, switch the car's current mode control to dark night mode;

A switching control unit based on precise positioning information is used to determine whether the car is currently on the road or under a building based on the obtained current precise positioning information of the car; when it is determined that the car is currently in a building based on the current precise positioning information of the car, the current positioning information of the car is determined. Mode control switches to dark mode;

The on-road speed measurement switching control unit is used to obtain the current vehicle speed v when it is determined that the car is currently in the on-road based on the current precise positioning information of the car, and control the acquisition of the tunnel length s and its congestion coefficient y through the cloud platform, and calculate the vehicle speed Tunnel exit time t=s/v*y; compare the calculated vehicle exit tunnel time t with a set threshold time tmin, and determine whether the calculated vehicle exit tunnel time t is greater than the set threshold time tmin ; When the calculated time t of the vehicle exiting the tunnel is greater than the set threshold time tmin, the current mode control of the car is switched to dark mode; when the calculated time t of the vehicle exiting the tunnel is less than or equal to the set threshold time tmin, Then switch the current mode control of the car to day mode.

The auxiliary switching control unit is used to determine whether the current ambient brightness L is less than the set minimum brightness value when the car is not currently in the road or building; when the car is not currently in the road or building, and the current If the ambient brightness L is less than the set minimum brightness value, the control enters the night mode; when the car is not currently on the road or in a building, and the current ambient brightness L is greater than the set minimum brightness value, the control enters the day mode.

Specifically, in this embodiment, the specific functions of each module of the above-mentioned automobile day and night mode automatic adjustment device can be referred to the corresponding description in the above-mentioned automobile day and night mode automatic adjustment method, and will not be described again here.

Based on the above embodiments, this application also provides a vehicle, the functional block diagram of which can be shown in Figure 7 . Figure 7 is a functional block diagram of the internal structure of a vehicle provided by an embodiment of the present application. As shown in Figure 7, the above-mentioned vehicle includes a processor, memory, network interface and display screen connected through a system bus. Among them, the vehicle's processor is used to provide computing and control capabilities. The vehicle's memory includes non-volatile storage media and internal memory. The non-volatile storage medium stores an operating system and a car day and night mode automatic adjustment method program. The internal memory provides an environment for the operation of the operating system and the automobile day and night mode automatic adjustment method program in the non-volatile storage medium. The vehicle's network interface is used to communicate with external terminals through a network connection. When the program of the automatic adjustment method for day and night modes of automobiles is executed by the processor, the steps of any of the above automatic adjustment methods for day and night modes of automobiles are implemented. The vehicle's display screen may be an LCD screen. In this embodiment, a light sensor is also installed on the vehicle for detecting the current ambient light brightness of the vehicle.

Those skilled in the art can understand that the principle block diagram shown in Figure 7 is only a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the vehicles to which the solution of the present application is applied. Specific vehicles may include There may be more or fewer parts than shown, or certain parts may be combined, or may have a different arrangement of parts.

Embodiments of the present application also provide a computer-readable storage medium. The above-mentioned computer-readable storage medium stores a program for an automatic adjustment method for day and night modes of automobiles. When the program for the automatic adjustment method for day and night modes of automobiles is executed by a processor, the embodiments of the present application provide The steps of any automatic adjustment method for car day and night mode.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "an example," "specific examples," or "some examples" or the like means that specific features are described in connection with the embodiment or example. , structures, materials or features are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or N embodiments or examples. Furthermore, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

Any process or method descriptions in flowcharts or otherwise described herein may be understood to represent modules, segments, or portions of code that include one or N executable instructions for implementing customized logical functions or steps of the process, And the scope of the preferred embodiments of the present application includes additional implementations in which functions may be performed out of the order shown or discussed, including in a substantially simultaneous manner or in the reverse order depending on the functionality involved, which should be interpreted as It is understood by those skilled in the art to which the embodiments of the present application belong.

The logic and/or steps represented in the flowcharts or otherwise described herein, for example, may be considered a sequenced list of executable instructions for implementing the logical functions, and may be embodied in any computer-readable medium, For use by, or in combination with, instruction execution systems, devices or devices (such as computer-based systems, systems including processors or other systems that can fetch instructions from and execute instructions from the instruction execution system, device or device) or equipment. For the purposes of this specification, a "computer-readable medium" may be any device that can contain, store, communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer readable media include the following: electrical connections with one or N wires (electronic device), portable computer disk cartridge (magnetic device), random access memory (RAM), Read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium may even be paper or other suitable medium on which the program may be printed, as the paper or other medium may be optically scanned and subsequently edited, interpreted, or otherwise suitable as necessary. Processing is performed to obtain the program electronically and then stored in computer memory.

It should be understood that various parts of the present application can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods may be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if it is implemented in hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: discrete logic gate circuits with logic functions for implementing data signals; Logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), etc.

Those of ordinary skill in the art can understand that all or part of the steps involved in implementing the methods of the above embodiments can be completed by instructing relevant hardware through a program. The program can be stored in a computer-readable storage medium. The program can be stored in a computer-readable storage medium. When executed, one of the steps of the method embodiment or a combination thereof is included.

In addition, each functional unit in various embodiments of the present application can be integrated into a processing module, or each unit can exist physically alone, or two or more units can be integrated into one module. The above integrated modules can be implemented in the form of hardware or software function modules. If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

The storage media mentioned above can be read-only memory, magnetic disks or optical disks, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above-mentioned embodiments are illustrative and cannot be understood as limitations of the present application. Those of ordinary skill in the art can make modifications to the above-mentioned embodiments within the scope of the present application. The embodiments are subject to changes, modifications, substitutions and variations.

Claims (11)

1. A method for automatically adjusting a day and night mode of an automobile, the method comprising:

acquiring the current ambient light brightness;

comparing the acquired current ambient light brightness with a preset brightness threshold;

when the current ambient light brightness is greater than or equal to a preset brightness threshold value, controlling to switch to a daytime mode;

when the current ambient light brightness is smaller than a preset brightness threshold value, further acquiring current geographic position information of the automobile, local sunrise and sunset information corresponding to the geographic position information and accurate position information;

and when the current ambient light brightness is smaller than a preset brightness threshold value, and the acquired current geographic position information of the automobile, the local sunrise and sunset information corresponding to the geographic position information and the accurate position information accord with the condition of starting the night mode, controlling to start the night mode.

2. The automatic adjustment method for the sunrise and sunset mode of the automobile according to claim 1, wherein when the current ambient light brightness is smaller than a preset brightness threshold, further acquiring current geographic position information of the automobile, local sunrise and sunset information corresponding to the geographic position information, and accurate position information, comprising:

when the current ambient light brightness is smaller than a preset brightness threshold value, acquiring current geographic position information and current time information of the automobile through a communication module of the automobile machine;

and acquiring accurate positioning information through the global satellite navigation system module.

3. The automatic regulation method of the day and night mode of the automobile according to claim 2, wherein when the current ambient light level is less than a preset brightness threshold, and the obtained current geographic position information of the automobile and the local sunrise and sunset information corresponding to the geographic position information, and the accurate position information accords with a start-up and night mode condition, controlling the start-up and night mode comprises:

based on the obtained current geographic position information of the automobile, a sunrise and sunset database corresponding to the current geographic position information is called to confirm the local sunset time;

Judging whether the current time information corresponding to the current geographic position of the automobile is at night time of sunset or not based on the acquired current geographic position information, current time information and local sunset time of the automobile;

and if the vehicle is in the sunset night time, switching the current mode control of the vehicle to the night mode.

4. The automatic adjustment method for day and night modes of an automobile according to claim 3, wherein the step of determining whether the current geographic position of the automobile corresponds to the current time information at night time of sunset based on the acquired current geographic position information and the current time information of the automobile and the local sunset time comprises the steps of:

if the current time information T is more than 10 and the current time information T is more than sunset time, judging that the current geographic position of the automobile is at the sunset night time corresponding to the current time information;

if the current time information T is less than 10 and the sunset time is less than the current time information T+24 and less than or equal to the sunrise time+24, judging that the current geographic position of the automobile is at the sunset night time corresponding to the current time information.

5. The automatic regulation method of the day and night mode of the automobile according to claim 1, wherein when the current ambient light level is less than a preset brightness threshold, and the obtained current geographic position information of the automobile and the local sunrise and sunset information corresponding to the geographic position information, and the accurate position information accords with a start-up and night mode condition, controlling the start-up and night mode comprises:

Based on the obtained current accurate positioning information of the automobile, judging whether the automobile is currently under a following road or a building;

when the automobile is judged to be currently in the building according to the current accurate positioning information of the automobile, the control of the current mode of the automobile is switched to the night mode.

6. The method for automatically adjusting the day and night modes of the automobile according to claim 5, wherein the step of judging whether the automobile is currently under a track or a building based on the acquired current accurate positioning information of the automobile comprises the steps of:

when the current accurate positioning information of the automobile is judged to be in the following track, the current automobile speed v is obtained, the tunnel length s and the congestion coefficient y thereof are obtained through the cloud platform, and the time t=s/v x y when the automobile exits the tunnel is calculated;

comparing the calculated vehicle exit tunnel time t with a set threshold time tmin, and judging whether the calculated vehicle exit tunnel time t is greater than the set threshold time tmin;

when the calculated vehicle exit tunnel time t is greater than the set threshold time tmin, the current mode control of the vehicle is switched to a night mode;

and when the calculated vehicle exit tunnel time t is less than or equal to the set threshold time tmin, switching the current mode control of the vehicle into a daytime mode.

7. The method for automatically adjusting the day and night modes of the automobile according to claim 5, wherein the step of judging whether the automobile is currently under a track or a building based on the acquired current accurate positioning information of the automobile comprises the steps of:

when the automobile is not in the following road and the building at present, judging whether the current ambient brightness L is smaller than a set minimum brightness value or not;

when the automobile is not in the following road and the building at present, and the current ambient brightness L is smaller than the set minimum brightness value, controlling to enter a night mode;

when the automobile is not currently in the following road and the building and the current ambient brightness L is larger than the set minimum brightness value, the control enters the daytime mode.

8. The automatic adjustment method for day and night modes of an automobile according to claim 1, further comprising:

when the daytime mode is switched, the specific displayed background brightness value is adjusted according to the current ambient brightness; when the mode is switched to the night mode, the specific displayed background brightness value is adjusted according to the current environment brightness.

9. An automatic day and night mode adjustment device for an automobile, the device comprising:

the environment light brightness acquisition module is used for acquiring the current environment light brightness;

The environment light brightness comparison module is used for comparing the acquired current environment light brightness with a preset brightness threshold;

the daytime mode control module is used for controlling to switch to a daytime mode when the current ambient light brightness is greater than or equal to a preset brightness threshold value;

the information acquisition module is used for further acquiring current geographic position information of the automobile, local sunrise and sunset information corresponding to the geographic position information and accurate position information when the current ambient light brightness is smaller than a preset brightness threshold;

and the comprehensive control module is used for controlling the start-up of the night mode when the current ambient light brightness is smaller than a preset brightness threshold value, the acquired current geographic position information of the automobile and the local sunrise and sunset information corresponding to the geographic position information are consistent with the start-up condition of the night mode.

10. A vehicle, characterized by comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the program to implement the auto day and night mode auto adjustment method according to any one of claims 1 to 8.

11. A computer-readable storage medium, wherein a program for an automatic adjustment method of a day and night mode of an automobile is stored on the computer-readable storage medium, and the program for an automatic adjustment method of a day and night mode of an automobile, when executed by a processor, implements the steps of the automatic adjustment method of a day and night mode of an automobile according to any one of claims 1 to 8.