Vehicle light control method and device, vehicle and storage medium

Abstract

The application provides a vehicle light control method and device, a vehicle and a storage medium. The method comprises: acquiring a current light mode of a vehicle and an ambient brightness outside the vehicle; and when the ambient brightness is greater than a night threshold and less than a daytime threshold, switching the current light mode to a corresponding target light mode based on a vehicle speed and / or a change trend of the ambient brightness. The method can improve driving safety, balance energy efficiency and meet light control requirements of more application scenarios.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to a vehicle lighting control method, apparatus, vehicle, and storage medium in the field of vehicle technology. Background Technology

[0002] With the development of the automotive industry, vehicles are becoming increasingly automated, including the automatic control of vehicle lighting systems. In traditional vehicle lighting control systems, vehicles use light sensors to determine the current ambient light conditions and then differentiate between daytime and nighttime based on the ambient brightness. For example, when the ambient brightness is below a certain threshold, it is designated as nighttime, and the vehicle will automatically turn on its headlights in nighttime conditions; when the ambient brightness is above a certain threshold, it is designated as daytime, and the vehicle will automatically turn off its headlights in daytime conditions. Summary of the Invention

[0003] This application provides a vehicle lighting control method, device, vehicle, and storage medium. This method can better balance driving safety and energy efficiency, meeting the lighting control needs of more application scenarios. In the above technical solution:

[0004] Firstly, a vehicle lighting control method is provided, the method comprising:

[0005] Obtain the vehicle's current lighting mode and the ambient brightness outside the vehicle;

[0006] When the ambient brightness is greater than the nighttime threshold and less than the daytime threshold, the current lighting mode is switched to the corresponding target lighting mode based on the vehicle speed and / or the changing trend of the ambient brightness.

[0007] In conjunction with the first aspect, in some possible implementations, the method further includes:

[0008] When the vehicle starts, if the ambient brightness is greater than or equal to the daytime threshold, the current lighting mode is initialized to daytime mode;

[0009] If the ambient brightness is less than the daytime threshold, the current lighting mode is initialized to dark start mode;

[0010] In the daytime mode, the headlights are in the off state; in the dark start mode, the headlights are continuously on for a first duration.

[0011] In conjunction with the first aspect and the above implementation methods, in some possible implementation methods, when the current lighting mode is the dark start mode, switching the current lighting mode to the corresponding target lighting mode based on the changing trend of vehicle speed and / or ambient brightness includes:

[0012] If the vehicle speed exceeds the first speed threshold for more than the second duration, the current lighting mode will be switched to the first target lighting mode, in which the headlights will be in the on state.

[0013] If the vehicle speed exceeds the first speed threshold for a period of time that does not exceed the second duration, the current lighting mode is switched to the second target lighting mode, in which the headlights are in the off state.

[0014] In conjunction with the first aspect and the above implementation methods, in some possible implementation methods, when the current lighting mode is the daytime mode, switching the current lighting mode to the corresponding target lighting mode based on the changing trend of vehicle speed and / or ambient brightness includes:

[0015] If the ambient brightness changes from bright to dark and the rate of change does not exceed the change threshold, and the vehicle speed exceeds the second speed threshold for more than a third duration or the vehicle speed does not exceed the second speed threshold for more than a fourth duration, the current lighting mode will be switched to night mode.

[0016] If the ambient brightness changes from bright to dark and the rate of change exceeds the change threshold, the current lighting mode will be switched to tunnel mode.

[0017] In both the tunnel mode and the night mode, the headlights are on. When the ambient brightness is greater than the night threshold and less than the daytime threshold, the switching rules for switching from the tunnel mode to the daytime mode are different from those for switching from the night mode to the daytime mode.

[0018] In conjunction with the first aspect and the above implementation methods, in some possible implementation methods, when the current lighting mode is the night mode, switching the current lighting mode to the corresponding target lighting mode based on the changing trend of vehicle speed and / or ambient brightness includes:

[0019] If the ambient brightness changes from dark to bright, and the vehicle speed exceeds the third speed threshold for more than five hours or the vehicle speed does not exceed the third speed threshold for more than six hours, the current lighting mode will be switched to the daytime mode.

[0020] In conjunction with the first aspect and the above implementation methods, in some possible implementation methods, when the current lighting mode is the tunnel mode, switching the current lighting mode to the corresponding target lighting mode based on the changing trend of vehicle speed and / or ambient brightness includes:

[0021] If the ambient brightness changes from dark to bright and the ambient brightness reaches the tunnel brightness threshold, the current lighting mode will be switched to the daytime mode.

[0022] If the ambient brightness changes from dark to bright and the time during which the ambient brightness does not reach the tunnel brightness threshold exceeds the seventh hour, the current lighting mode will be switched to the night mode.

[0023] The tunnel brightness threshold is determined based on the ambient brightness when the daytime mode is switched to the tunnel mode.

[0024] In conjunction with the first aspect and the above-described implementations, in some possible implementations, after obtaining the vehicle's current lighting mode and the ambient brightness outside the vehicle, the method further includes:

[0025] When the ambient brightness is less than or equal to the nighttime threshold, the current lighting mode is set to the third target lighting mode, and the headlights are in the on state under the third target lighting mode;

[0026] When the ambient brightness is greater than or equal to a daytime threshold, the current lighting mode is set to a fourth target lighting mode, in which the headlights are in an off state. Secondly, a vehicle lighting control device is provided, comprising:

[0027] The acquisition module is used to acquire the vehicle's current lighting mode and the ambient brightness outside the vehicle;

[0028] The first switching module is used to switch the current lighting mode to the corresponding target lighting mode based on the vehicle speed and / or the changing trend of the ambient brightness when the ambient brightness is greater than the nighttime threshold and less than the daytime threshold.

[0029] In conjunction with the second aspect, in some possible implementations, the apparatus further includes an initialization module, the initialization module being used for:

[0030] When the vehicle starts, if the ambient brightness is greater than or equal to the daytime threshold, the current lighting mode is initialized to daytime mode;

[0031] If the ambient brightness is less than the daytime threshold, the current lighting mode is initialized to dark start mode;

[0032] In the daytime mode, the headlights are in the off state; in the dark start mode, the headlights are continuously on for a first duration.

[0033] In conjunction with the second aspect and the above implementation methods, in some possible implementation methods, when the current lighting mode is the dark start mode, the first switching module, when the ambient brightness is greater than the nighttime threshold and less than the daytime threshold, is specifically used for:

[0034] If the vehicle speed exceeds the first speed threshold for more than the second duration, the current lighting mode will be switched to the first target lighting mode, in which the headlights will be in the on state.

[0035] If the vehicle speed exceeds the first speed threshold for a period of time that does not exceed the second duration, the current lighting mode is switched to the second target lighting mode, in which the headlights are in the off state.

[0036] In conjunction with the second aspect and the above implementation methods, in some possible implementation methods, when the current lighting mode is the daytime mode, the first switching module, when the ambient brightness is greater than the nighttime threshold and less than the daytime threshold, is specifically used for:

[0037] If the ambient brightness changes from bright to dark and the rate of change does not exceed the change threshold, and the vehicle speed exceeds the second speed threshold for more than a third duration or the vehicle speed does not exceed the second speed threshold for more than a fourth duration, the current lighting mode will be switched to night mode.

[0038] If the ambient brightness changes from bright to dark and the rate of change exceeds the change threshold, the current lighting mode will be switched to tunnel mode.

[0039] In both the tunnel mode and the night mode, the headlights are on. When the ambient brightness is greater than the night threshold and less than the daytime threshold, the switching rules for switching from the tunnel mode to the daytime mode are different from those for switching from the night mode to the daytime mode.

[0040] In conjunction with the second aspect and the above implementation methods, in some possible implementation methods, when the current lighting mode is the night mode, the first switching module, when the ambient brightness is greater than the night threshold and less than the daytime threshold, is specifically used for:

[0041] If the ambient brightness changes from dark to bright, and the vehicle speed exceeds the third speed threshold for more than five hours or the vehicle speed does not exceed the third speed threshold for more than six hours, the current lighting mode will be switched to the daytime mode.

[0042] In conjunction with the second aspect and the above implementation methods, in some possible implementation methods, when the current lighting mode is the tunnel mode, the first switching module, when the ambient brightness is greater than the nighttime threshold and less than the daytime threshold, is specifically used for:

[0043] If the ambient brightness changes from dark to bright and the ambient brightness reaches the tunnel brightness threshold, the current lighting mode will be switched to the daytime mode.

[0044] If the ambient brightness changes from dark to bright and the time during which the ambient brightness does not reach the tunnel brightness threshold exceeds the seventh hour, the current lighting mode will be switched to the night mode.

[0045] The tunnel brightness threshold is determined based on the ambient brightness when the daytime mode is switched to the tunnel mode.

[0046] In conjunction with the second aspect and the above-described implementations, in some possible implementations, the device further includes a second switching module, the second switching module being used for:

[0047] When the ambient brightness is less than or equal to the nighttime threshold, the current lighting mode is set to the third target lighting mode, and the headlights are in the on state under the third target lighting mode;

[0048] When the ambient brightness is greater than or equal to the daytime threshold, the current lighting mode is set to the fourth target lighting mode, in which the headlights are in the off state.

[0049] Thirdly, a vehicle is provided, including a memory and a processor. The memory is used to store executable program code, and the processor is used to call and run the executable program code from the memory, causing the vehicle to perform the methods described in the first aspect or any possible implementation thereof.

[0050] Fourthly, a computer program product is provided, comprising: computer program code, which, when run on a computer, causes the computer to perform the methods described in the first aspect or any possible implementation thereof.

[0051] Fifthly, a computer-readable storage medium is provided that stores computer program code, which, when executed on a computer, causes the computer to perform the methods described in the first aspect or any possible implementation thereof.

[0052] In summary, the technical solution of this application, by acquiring the vehicle's current lighting mode and the ambient brightness outside the vehicle, can automatically switch to the corresponding target lighting mode based on the vehicle speed and / or the changing trend of ambient brightness when the ambient brightness is greater than the night threshold and less than the day threshold. This can improve driving safety and achieve a balance of energy efficiency, meeting the lighting control needs of more application scenarios. Attached Figure Description

[0053] Figure 1 This is an exemplary system architecture diagram of a vehicle lighting control method provided in an embodiment of this application;

[0054] Figure 2 This is a schematic flowchart of a vehicle lighting control method provided in an embodiment of this application;

[0055] Figure 3 This is an example diagram illustrating a lighting mode switching relationship provided in an embodiment of this application;

[0056] Figure 4 This is an example diagram illustrating the division of ambient brightness into intervals, provided in an embodiment of this application.

[0057] Figure 5 This is a schematic diagram of the structure of a vehicle lighting control device provided in an embodiment of this application;

[0058] Figure 6 This is a schematic diagram of the structure of a vehicle lighting control device provided in an embodiment of this application;

[0059] Figure 7 This is a schematic diagram of the structure of a vehicle provided in an embodiment of this application. Detailed Implementation

[0060] The technical solutions in this application will be clearly and thoroughly described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in the text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0061] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0062] Vehicle lighting systems typically offer two control modes: manual and automatic (AUTO). When AUTO is selected, the system enters automated control. This automated control requires automatically turning the headlights on or off as ambient light conditions change during vehicle operation. Understandably, at night, low ambient light can affect driving safety, and automatically turning on the headlights provides additional illumination. During daytime driving, sufficient ambient light meets driving safety requirements, and automatically turning off the headlights saves energy. However, in certain scenarios, such as dusk or dawn, while there is a certain level of ambient light that has a lower impact on driving safety, allowing for energy savings by not using headlights, the ambient light conditions are still insufficient. In these situations, turning on the headlights further enhances driving safety. Therefore, a further balance between driving safety and energy efficiency is needed to meet the lighting control needs of more application scenarios and improve the user's intelligent driving experience.

[0063] Based on this, embodiments of this application provide a vehicle lighting control method. This method can be implemented using a computer program and can run on a vehicle lighting control device based on the von Neumann architecture. The computer program can be integrated into an application or run as a standalone utility application. The vehicle lighting control device can be a vehicle, a functional module within the vehicle, an onboard computer system, or a mobile terminal, cloud server, or other device with sufficient processing power and suitable hardware support that communicates with the vehicle.

[0064] Figure 1 This is an exemplary system architecture diagram of a vehicle lighting control method provided in an embodiment of this application.

[0065] like Figure 1 As shown, exemplarily, the system architecture includes a control system 110, a sensor assembly 120, and a lighting system 130.

[0066] The control system 110 can be an on-board computer system including a central processing unit and a memory, capable of executing computer programs for implementing vehicle lighting control methods. The control system 110 can connect and communicate with the sensor assembly 120 and the lighting system 130 via circuitry or other means to receive data from the sensor assembly 120 and the lighting system 130 and make lighting control decisions. In some embodiments, the control system 110 may include a state machine for managing and switching vehicle lighting modes. The state machine can determine an appropriate vehicle lighting mode and generate control signals based on the current vehicle state, sensor data, and preset rules.

[0067] The sensor assembly 120 may include a light sensor and a vehicle speed sensor, etc.; the light sensor is used to sense the ambient brightness of the external environment, and the vehicle speed sensor is used to measure the current speed of the vehicle. In some embodiments, the light sensor may employ components such as photoresistors, photodiodes, and photoelectric converters to convert light intensity into an electrical signal for processing. The light sensor may be set independently or integrated with a rain sensor to form a light-rain sensor.

[0068] The vehicle lighting system 130 includes headlights, taillights, turn signals, etc., and is used to provide vehicle lighting and signal indication functions. In this application, "headlights" refers to front headlights or headlights, which typically include low beams and high beams. Turning on the vehicle's low beams or high beams is equivalent to turning on the vehicle's headlights. In some embodiments, the taillights can be controlled in conjunction with the headlights; for example, turning on the vehicle's headlights will automatically turn on the taillights.

[0069] Figure 2 This is a schematic flowchart of a vehicle lighting control method provided in an embodiment of this application.

[0070] For example, such as Figure 2 As shown, the method includes:

[0071] S201, obtains the vehicle's current lighting mode and the ambient brightness outside the vehicle.

[0072] The current lighting mode refers to the lighting mode currently being used by the vehicle. The vehicle can be configured with multiple lighting modes for different application scenarios, and any lighting mode can be switched to one or more other lighting modes. Each lighting mode can be configured with one or more switching rules (or trigger conditions). When the current lighting mode meets any switching rule, it is switched to the target lighting mode corresponding to that rule. The target lighting mode represents the lighting modes that the current lighting mode can switch to. The current lighting mode can be configured with multiple different switching rules to correspond to the same target lighting mode. The headlights (or other lighting devices in the vehicle lighting system) have different lighting states, corresponding target lighting modes, or corresponding switching rules under different lighting modes.

[0073] For example, such as Figure 3As shown, the vehicle can be set to various lighting modes, including DarkStart, Day, Night, and Tunnel. Each lighting mode can switch to one or more other lighting modes according to set switching rules. For example, if the vehicle is currently in Tunnel mode, it can switch to Day mode if the first switching rule is met, and to Night mode if the second switching rule is met. Therefore, the target lighting modes for the current lighting mode include both Day and Night. As another example, if the current lighting mode is Night mode, it can switch to Day mode if the third switching rule is met. In both Tunnel and Night modes, the headlights are on, and both Tunnel and Night modes can switch to Day mode, but the first and third switching rules for switching from Tunnel and Night modes to Day mode are different.

[0074] Ambient brightness outside the vehicle can be acquired using light sensors or light-rain sensors, by detecting the surrounding light intensity. Ambient brightness can also be acquired continuously, by collecting and recording values ​​in a continuous manner, monitoring lighting conditions in real time to obtain trends and rates of change in ambient brightness.

[0075] In some embodiments, exemplarily, such as Figure 4 As shown, the ambient brightness can be divided into multiple preset intervals according to the brightness level. The ambient brightness can be divided into daytime intervals, nighttime intervals, and transition intervals by preset daytime thresholds and nighttime thresholds.

[0076] The daytime threshold can be set as the ambient light limit that sufficiently ensures safe driving. The ambient light range above this threshold is the daytime zone. Within the daytime zone, the ambient light is sufficient to provide adequate illumination, eliminating the need for the vehicle to turn on its headlights and ensuring driving safety.

[0077] The nighttime threshold can be set as the ambient light limit that significantly affects safe driving. The ambient light range below this threshold is the nighttime zone. Within the nighttime zone, the ambient light is insufficient to ensure driving safety, and the vehicle needs to turn on its headlights to provide additional illumination.

[0078] The ambient brightness range between the daytime threshold and the nighttime threshold is the transition zone. In this transition zone, the ambient brightness is higher than in the nighttime zone but lower than in the daytime zone, gradually increasing from the nighttime threshold to the daytime threshold. Within this transition zone, the ambient light conditions provide a degree of support for safe driving. Therefore, one can choose not to turn on the headlights to save energy, or turn them on as needed to further enhance driving safety.

[0079] In some embodiments, such as Figure 3 As shown, when the vehicle is started, the current lighting mode can be initialized to daytime mode or dark start mode, specifically including:

[0080] If the ambient brightness is greater than or equal to the daytime threshold, the current lighting mode is initialized to daytime mode; if the ambient brightness is less than the daytime threshold, the current lighting mode is initialized to dark start mode.

[0081] Understandably, when the vehicle is not started, the light sensor is not activated and the headlights are off; when the vehicle is started, the light sensor is activated and can determine an initial mode for the headlights based on the ambient brightness information collected when the light sensor is activated.

[0082] When the ambient brightness is greater than or equal to the daytime threshold, the brightness range in which the vehicle is located is determined to be the daytime range, and the current lighting mode is initialized to the daytime mode. In the daytime mode, the headlights are in the off state. Since the ambient brightness is high at this time, it does not affect driving safety, and not turning on the headlights can save energy.

[0083] When the ambient brightness is less than the daytime threshold, the brightness range of the vehicle is determined to be the nighttime range or the transition range. The current lighting mode is initialized to the dark start mode. In the dark start mode, the headlights are in the on state. Since the ambient brightness is low at this time, turning on the headlights can provide additional lighting, allowing the user to fully observe the environment around the vehicle. It can also alert pedestrians in low-light environments that the vehicle is about to start.

[0084] Specifically, in dark start mode, the headlights remain on for a first duration (T1), meaning they are on for T1 hours after entering dark start mode and then off. Dark start mode is essentially a transitional lighting mode for vehicle startup, and the maximum time the vehicle maintains dark start mode is T1. During the T1 hours after entering dark start mode, the vehicle can switch to the corresponding target lighting mode according to the switching rules within dark start mode, or the user can manually enter the lighting system's manual control mode. If no lighting mode switch is made within T1 hours, dark start mode defaults to daytime mode, turning off the headlights. The specific T1 value can be set according to the specific implementation and is not limited here.

[0085] In some embodiments, when the ambient brightness is less than the daytime threshold, the lighting mode can be directly initialized to night mode, in which the headlights are in the on state and there is no time limit.

[0086] Compared to directly entering night mode upon vehicle startup, initializing the lighting mode to dark start mode serves as a transitional lighting mode in low-light environments. The switching rules can be independently configured (different from those in night mode). Within time T1, the system fully assesses the vehicle's current environment and can switch to a target lighting mode adapted to the current scenario at an appropriate time. For example, if the vehicle starts in an environment with low brightness within the transition range, the lighting system enters dark start mode. Within time T1, it can further select between night mode and day mode based on the switching rules satisfied by vehicle speed or changes in ambient brightness.

[0087] S202, when the ambient brightness is greater than the nighttime threshold and less than the daytime threshold, the current lighting mode is switched to the corresponding target lighting mode based on the vehicle speed and / or the changing trend of the ambient brightness.

[0088] Specifically, after obtaining the vehicle's current lighting mode and the ambient brightness outside the vehicle, the target lighting mode that can be switched to and the switching rules required to switch to the target lighting mode can be determined based on the current lighting mode. The switching rules may involve one or more factors such as ambient brightness, ambient brightness change trend, and vehicle speed, so as to switch to the optimal target lighting mode, meet the lighting control needs of various application scenarios, and achieve a balance between driving safety and energy efficiency.

[0089] like Figure 4 The example diagram showing the division of ambient brightness into intervals can categorize the ambient brightness around a vehicle into daytime, nighttime, or transitional intervals. During the daytime interval, the vehicle needs to turn off its headlights to conserve energy; during the nighttime interval, the vehicle needs to turn on its headlights to ensure driving safety; and during the transitional interval, the vehicle can choose to turn its headlights on or off. Further analysis and judgment can be made based on changes in vehicle speed and / or ambient brightness to balance driving safety and energy efficiency.

[0090] Based on this, in some embodiments, when the ambient brightness is less than or equal to the nighttime threshold, the current lighting mode is set to the third target lighting mode, and the headlights are in the on state under the third target lighting mode.

[0091] When the ambient brightness is greater than or equal to the daytime threshold, the current lighting mode is set to the fourth target lighting mode, in which the headlights are in the off state.

[0092] Specifically, the third target lighting mode can be a night mode or other lighting mode with the headlights on, and the fourth target lighting mode can be a daytime mode or other lighting mode with the headlights off.

[0093] Understandably, when a vehicle moves from an environment with ambient brightness below the daytime threshold to an environment with ambient brightness in the daytime range, if the headlights are currently on in the vehicle's lighting mode, the lighting mode needs to be switched to turn off the headlights; otherwise, the headlights remain off (e.g., without switching lighting modes). Similarly, when a vehicle moves from an environment with ambient brightness above the nighttime threshold to an environment with ambient brightness in the nighttime range, if the headlights are currently off in the vehicle's lighting mode, the lighting mode needs to be switched to turn on the headlights; otherwise, the headlights remain on (e.g., without switching lighting modes). This embodiment ensures that the vehicle can accurately use the appropriate lighting mode in both daytime and nighttime ranges.

[0094] It is important to note that the lighting mode can be switched immediately when the ambient brightness is greater than or equal to the daytime threshold or less than or equal to the nighttime threshold, or the lighting mode can be switched after the ambient brightness has been maintained within this range for a period of time, in order to avoid the light sensor collecting abnormal values ​​and causing frequent false switching of the lighting mode.

[0095] In some embodiments, exemplarily, such as Figure 3 As shown, when the current lighting mode is dark start mode, the target lighting modes that can be switched to in dark start mode include night mode and daytime mode. In night mode, the headlights are on, and in daytime mode, the headlights are off. When the ambient brightness of the vehicle is in a transition range, the step of switching the current lighting mode to the corresponding target lighting mode based on the vehicle speed and / or the trend of the ambient brightness includes:

[0096] If the vehicle speed exceeds the first speed threshold for more than the second duration, the current lighting mode will be switched to the first target lighting mode, in which the headlights will be in the on state.

[0097] If the vehicle speed exceeds the first speed threshold for a period of time that does not exceed the second duration, the current lighting mode is switched to the second target lighting mode, in which the headlights are in the off state.

[0098] Specifically, the first target lighting mode can be night mode or other lighting modes with the headlights on, and the second target lighting mode can be daytime mode or other lighting modes with the headlights off.

[0099] When the current lighting mode is set to dark start mode, it indicates that the vehicle has just started and a lighting mode switch needs to be selected based on the vehicle's environment within T1 time. When the vehicle is in the transition zone, the need to turn on the headlights can be further determined based on the vehicle speed. The transition zone has a certain ambient brightness, and at low speeds, driving safety can be ensured without turning on the headlights, while also saving energy. At high speeds, the lower ambient brightness may affect driving safety, so the headlights can be turned on to provide additional illumination.

[0100] To more accurately determine whether a vehicle is traveling at high speed, a first speed threshold (V1) and a second duration (T2) can be set to assist in the judgment. For example, during the T1 time period when the lights are on in dark start mode, if the vehicle speed exceeds V1 for more than T2, the vehicle is considered to be traveling at high speed, and the dark start mode is switched to night mode. During the T1 time period when the lights are on in dark start mode, if the vehicle speed exceeds V1 for less than T2, the vehicle is considered not to be traveling at high speed, and the dark start mode is maintained for T1 time before automatically switching to daytime mode. Here, T2 is less than T1 to ensure that the vehicle can switch to the corresponding target lighting mode in a timely manner during dark start mode.

[0101] In some embodiments, exemplarily, such as Figure 3 As shown, when the current lighting mode is daytime mode, the target lighting modes that daytime mode can switch to include nighttime mode and tunnel mode. In both nighttime mode and tunnel mode, the headlights are in the on state. When the vehicle's ambient brightness is in a transitional range, the switching rules for switching from tunnel mode to daytime mode are different from those for switching from nighttime mode to daytime mode. The step of switching the current lighting mode to the corresponding target lighting mode based on vehicle speed and / or the changing trend of ambient brightness includes:

[0102] If the ambient brightness changes from bright to dark and the rate of change does not exceed the change threshold, and the vehicle speed exceeds the second speed threshold for more than a third duration or the vehicle speed does not exceed the second speed threshold for more than a fourth duration, the current lighting mode will be switched to night mode.

[0103] If the ambient brightness changes from bright to dark and the rate of change exceeds the change threshold, the current lighting mode is switched to tunnel mode.

[0104] Specifically, the trend of ambient brightness change can be calculated based on changes in ambient brightness over a period of time. This trend includes a gradual increase in ambient brightness (from dark to bright) and a gradual decrease in ambient brightness (from bright to dark). If the trend is from dark to bright, for example, when the vehicle is at dawn and has just switched from night mode to day mode, the ambient brightness is increasing, and the need for headlights is decreasing; in this case, day mode can be maintained without switching headlight modes. Conversely, if the trend is from bright to dark, for example, when the vehicle is at dusk, the ambient brightness is decreasing, and the need for headlights is increasing; in this case, the headlights can be switched to the on state.

[0105] When the ambient brightness changes from dark to bright or from bright to dark, the rate of change (speed) of brightness is also considered, i.e., the change in ambient brightness per unit time. The trend and rate of change of ambient brightness may vary in different environments. Analyzing the trend and rate of change of ambient brightness allows for a more accurate assessment of the vehicle's current environment, enabling the use of a more appropriate lighting mode. For example, at dusk, the ambient brightness gradually dims, transitioning slowly from the daytime zone to the transition zone, and then slowly into the nighttime zone, with a relatively low rate of change. Conversely, when entering places like tunnels, the ambient brightness dims abruptly, transitioning rapidly from the daytime zone to the nighttime zone within a shorter timeframe.

[0106] By setting preset threshold values, changes in natural light and ambient light can be distinguished. When the ambient brightness changes from bright to dark and the rate of change does not exceed the threshold, it indicates that the vehicle may be in natural light, such as at dusk or when the weather changes from sunny to cloudy. When the ambient brightness changes from bright to dark and the rate of change exceeds the threshold, it indicates that the vehicle may be entering a poorly lit area, such as a tunnel or underground parking garage. Therefore, based on the trend and rate of change in ambient brightness, the vehicle can be switched from daytime mode to nighttime mode or tunnel mode, making the switching of lighting modes more intelligent.

[0107] In some embodiments, during the transition range, when the ambient brightness changes from bright to dark and the rate of change does not exceed a threshold, the vehicle will switch from daytime mode to nighttime mode. Since the rate of change in ambient brightness is relatively slow, to ensure a suitable timing for switching lighting modes while balancing driving safety and energy efficiency, the switching time can be determined based on vehicle speed. At higher speeds, a shorter switching time can be set, switching from daytime mode to nighttime mode after a short period of high-speed driving to activate headlights earlier and ensure driving safety. At lower speeds, a longer switching time can be set, switching from daytime mode to nighttime mode after a longer period of low-speed driving to activate headlights later and save energy.

[0108] To more accurately determine whether a vehicle meets the switching time requirement for transitioning from daytime to nighttime mode, a second speed threshold (V2) can be set to assist in the judgment. When the vehicle speed exceeds V2, it is considered to be in a high-speed driving state, and a third duration (T3) is used as the switching time. After the time when the vehicle speed exceeds V2 exceeds T3, it switches from daytime mode to nighttime mode. When the vehicle speed does not exceed V2, it is considered to be in a low-speed driving state, and a fourth duration (T4) is used as the switching time. After the time when the vehicle speed does not exceed V2 exceeds T4, it switches from daytime mode to nighttime mode. T3 is less than T4 to ensure that headlights can be turned on earlier when driving at high speeds, increasing driving safety.

[0109] In some embodiments, vehicle speed may change frequently due to road changes. Therefore, when it is determined that the vehicle is in a transition range and the ambient brightness changes from bright to dark without exceeding a change threshold, the switching time from day mode to night mode can be calculated, and a maximum switching time T can be set. X Determine in T X Within a given time period, does the vehicle speed exceed V2 for a period exceeding T3? If the vehicle speed exceeds V2 for a period exceeding T3, then the vehicle switches from daytime mode to nighttime mode when the vehicle speed exceeds V2 for a period exceeding T3. If the vehicle speed exceeds V2 for a period not exceeding T3, then after T... X After a certain time, the mode switches from daytime to nighttime. Where T3 is less than T. X .

[0110] In some embodiments, when the ambient brightness changes from bright to dark and the rate of change exceeds a threshold, the vehicle will switch from daytime mode to tunnel mode. Because ambient brightness changes rapidly and has a significant impact on driving safety, headlights need to be turned on in advance to ensure safety. For example, when entering a tunnel, headlights need to be turned on beforehand to ensure driving safety.

[0111] To switch lighting modes at an appropriate time, the system can switch from daytime mode to tunnel mode after determining that the ambient brightness trend is from bright to dark and the rate of change exceeds a threshold, and when the ambient brightness is determined to be below a daytime threshold. In some embodiments, the timing of switching from daytime mode to tunnel mode can also be determined by calculating the distance into the tunnel. Since the abrupt change in ambient brightness occurs at the tunnel entrance and exit, the duration T of the abrupt change in ambient brightness is calculated after determining that the ambient brightness trend is from bright to dark and the rate of change exceeds a threshold. S (Calculations begin when the rate of change exceeds the change threshold), calculated at T S The distance L traveled by the vehicle inside the tunnel varies with the time T taken for the vehicle to enter the tunnel. SAs the distance increases, the distance L also increases. When the distance L exceeds the preset tunnel distance and the ambient brightness is lower than the daytime threshold, the mode switches from daytime mode to tunnel mode.

[0112] In some embodiments, exemplarily, such as Figure 3 As shown, when the current lighting mode is night mode, the target lighting modes that night mode can switch to include day mode; the step of switching the current lighting mode to the corresponding target lighting mode based on the changing trend of vehicle speed and / or ambient brightness includes:

[0113] If the ambient brightness changes from dark to bright, and the vehicle speed exceeds the third speed threshold for more than five hours or the vehicle speed does not exceed the third speed threshold for more than six hours, the current lighting mode will be switched to the daytime mode.

[0114] Since the headlights are already on in night mode, sufficient lighting is provided for scenarios like entering tunnels. Therefore, night mode only needs to determine when to turn off the headlights to switch to daytime mode. Switching from night mode to daytime mode is similar to switching from daytime mode to night mode. When the vehicle is in a transitional zone, and the ambient brightness changes from dark to bright, the vehicle will switch from night mode to daytime mode. At higher speeds, a longer switching time can be set, allowing for a longer period of high-speed driving before switching from night mode to daytime mode, thus delaying the headlights from turning off and ensuring driving safety. At lower speeds, a shorter switching time can be set, allowing for a shorter period of low-speed driving before switching from night mode to daytime mode, thus turning off the headlights earlier and saving energy.

[0115] To more accurately determine whether a vehicle meets the switching time requirement for transitioning from night mode to day mode, a third speed threshold (V3) can be set to assist in the judgment. When the vehicle speed exceeds V3, it is considered to be in a high-speed driving state, and a fifth duration (T5) is used as the switching time. After the time when the vehicle speed exceeds V3 exceeds T5, it switches from night mode to day mode. When the vehicle speed does not exceed V3, it is considered to be in a low-speed driving state, and a sixth duration (T6) is used as the switching time. After the time when the vehicle speed does not exceed V3 exceeds T6, it switches from night mode to day mode. T5 is greater than T6 to ensure that the headlights can be delayed when driving at high speeds, increasing driving safety.

[0116] In some embodiments, the vehicle speed may change frequently due to road changes. Therefore, when it is determined that the vehicle is in a transition range and the ambient brightness is changing from dark to bright, the switching time from night mode to day mode can be calculated, and a maximum switching time T can be set. Y Determine in T YWithin a given time period, whether the vehicle speed does not exceed V3 for more than T6; if the vehicle speed does not exceed V3 for more than T6, then switch from night mode to day mode when the vehicle speed does not exceed V3 for more than T6; if the vehicle speed does not exceed V3 for less than T6, then switch from night mode to day mode after T6. Y After a certain time, the mode switches from night mode to day mode. Where T6 is less than T. Y .

[0117] It should be noted that the speed thresholds V1, V2 and V3 can be set to the same speed or different speeds, depending on the specific implementation situation, and no specific limitation is made here.

[0118] In some embodiments, exemplarily, such as Figure 3 As shown, when the current lighting mode is tunnel mode, the target lighting modes that can be switched to in tunnel mode include daytime mode and nighttime mode; the step of switching the current lighting mode to the corresponding target lighting mode based on the changing trend of vehicle speed and / or ambient brightness includes:

[0119] If the ambient brightness changes from dark to bright and the ambient brightness reaches the tunnel brightness threshold, the current lighting mode will be switched to the daytime mode.

[0120] If the ambient brightness changes from dark to bright and the time during which the ambient brightness does not reach the tunnel brightness threshold exceeds the seventh hour, the current lighting mode will be switched to the night mode.

[0121] The tunnel brightness threshold is determined based on the ambient brightness when the daytime mode is switched to the tunnel mode.

[0122] Specifically, in tunnel mode, if the ambient brightness changes from dark to bright, it indicates that the vehicle may be leaving a poorly lit area (such as a tunnel or underground parking lot). Since the ambient brightness changes rapidly when a vehicle leaves a poorly lit area, the trend can be quickly determined based on the ambient brightness before entering tunnel mode, allowing for a rapid decision on whether to switch lighting modes. When switching from daytime mode to tunnel mode, the ambient brightness value at the time of switching can be recorded and used as the tunnel brightness threshold. This threshold falls within a transition range (either a daytime threshold or a nighttime threshold). If the ambient brightness when the vehicle leaves a poorly lit area reaches this tunnel brightness threshold, it indicates that the environment is consistent with the environment before entering tunnel mode, and the vehicle can directly switch from tunnel mode to daytime mode.

[0123] For example, the ambient brightness is in the daytime range before the vehicle enters the tunnel. When entering the tunnel, the ambient brightness drops sharply and switches to tunnel mode when the ambient brightness is in the transition range. This ambient brightness value is recorded as the tunnel brightness threshold. After the vehicle exits the tunnel, the ambient brightness reaches the tunnel brightness threshold again, and then the tunnel mode is switched back to daytime mode.

[0124] If the ambient brightness of the vehicle after leaving the poorly lit area still cannot reach the tunnel brightness threshold after the seventh time (T7), it means that the ambient brightness of the vehicle is in is lower than that before entering the tunnel mode. The natural environment may have changed, such as the approaching night or the weather changing. The tunnel mode can be switched to night mode, and the switching rules of night mode will be used to determine when to switch back to day mode.

[0125] In the technical solution of this application, by acquiring the vehicle's current lighting mode and the brightness of the external environment, when the ambient brightness is greater than the nighttime threshold and less than the daytime threshold, the system can automatically switch to the corresponding target lighting mode based on the vehicle speed and / or the trend of ambient brightness changes. This can improve driving safety and achieve a balance of energy efficiency, meeting the lighting control needs of more application scenarios.

[0126] Figure 5 This is a schematic diagram of the structure of a vehicle lighting control device provided in an embodiment of this application.

[0127] For example, such as Figure 5 As shown, the device 300 includes:

[0128] Acquisition module 310: used to acquire the vehicle's current lighting mode and the ambient brightness outside the vehicle;

[0129] First switching module 320: When the ambient brightness is greater than the nighttime threshold and less than the daytime threshold, it switches the current lighting mode to the corresponding target lighting mode based on the vehicle speed and / or the changing trend of the ambient brightness.

[0130] In some possible embodiments, such as Figure 6 As shown, the device 300 further includes an initialization module 330, which is used for:

[0131] When the vehicle starts, if the ambient brightness is greater than or equal to the daytime threshold, the current lighting mode is initialized to daytime mode;

[0132] If the ambient brightness is less than the daytime threshold, the current lighting mode is initialized to dark start mode;

[0133] In the daytime mode, the headlights are in the off state; in the dark start mode, the headlights are continuously on for a first duration.

[0134] In some possible embodiments, when the current lighting mode is the dark start mode, the first switching module 320, when the ambient brightness is greater than the nighttime threshold and less than the daytime threshold, is specifically used for:

[0135] If the vehicle speed exceeds the first speed threshold for more than the second duration, the current lighting mode will be switched to the first target lighting mode, in which the headlights will be in the on state.

[0136] If the vehicle speed exceeds the first speed threshold for a period of time that does not exceed the second duration, the current lighting mode is switched to the second target lighting mode, in which the headlights are in the off state.

[0137] In some possible embodiments, when the current lighting mode is the daytime mode, the first switching module 320, when the ambient brightness is greater than the nighttime threshold and less than the daytime threshold, is specifically used for:

[0138] If the ambient brightness changes from bright to dark and the rate of change does not exceed the change threshold, and the vehicle speed exceeds the second speed threshold for more than a third duration or the vehicle speed does not exceed the second speed threshold for more than a fourth duration, the current lighting mode will be switched to night mode.

[0139] If the ambient brightness changes from bright to dark and the rate of change exceeds the change threshold, the current lighting mode will be switched to tunnel mode.

[0140] In both the tunnel mode and the night mode, the headlights are on. When the ambient brightness is greater than the night threshold and less than the daytime threshold, the switching rules for switching from the tunnel mode to the daytime mode are different from those for switching from the night mode to the daytime mode.

[0141] In some possible embodiments, when the current lighting mode is the night mode, the first switching module 320, when the ambient brightness is greater than the night threshold and less than the daytime threshold, is specifically used for:

[0142] If the ambient brightness changes from dark to bright, and the vehicle speed exceeds the third speed threshold for more than five hours or the vehicle speed does not exceed the third speed threshold for more than six hours, the current lighting mode will be switched to the daytime mode.

[0143] In some possible embodiments, when the current lighting mode is the tunnel mode, the first switching module 320, when the ambient brightness is greater than the nighttime threshold and less than the daytime threshold, is specifically used for:

[0144] If the ambient brightness changes from dark to bright and the ambient brightness reaches the tunnel brightness threshold, the current lighting mode will be switched to the daytime mode.

[0145] If the ambient brightness changes from dark to bright and the time during which the ambient brightness does not reach the tunnel brightness threshold exceeds the seventh hour, the current lighting mode will be switched to the night mode.

[0146] The tunnel brightness threshold is determined based on the ambient brightness when the daytime mode is switched to the tunnel mode.

[0147] In some possible embodiments, such as Figure 6 As shown, the device 300 further includes a second switching module 340, which is used for:

[0148] When the ambient brightness is less than or equal to the nighttime threshold, the current lighting mode is set to the third target lighting mode, and the headlights are in the on state under the third target lighting mode;

[0149] When the ambient brightness is greater than or equal to the daytime threshold, the current lighting mode is set to the fourth target lighting mode, in which the headlights are in the off state.

[0150] In the technical solution of this application, by acquiring the vehicle's current lighting mode and the brightness of the external environment, when the ambient brightness is greater than the nighttime threshold and less than the daytime threshold, the system can automatically switch to the corresponding target lighting mode based on the vehicle speed and / or the trend of ambient brightness changes. This can improve driving safety and achieve a balance of energy efficiency, meeting the lighting control needs of more application scenarios.

[0151] Figure 7 This is a schematic diagram of the structure of a vehicle provided in an embodiment of this application.

[0152] For example, such as Figure 7 As shown, the vehicle 400 includes a memory 410 and a processor 420, wherein the memory 410 stores executable program code 411, and the processor 420 is used to call and execute the executable program code 411 to perform a vehicle lighting control method.

[0153] This embodiment can divide the vehicle into functional modules according to the above method example. For example, each module can correspond to a separate functional module, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware. It should be noted that the module division in this embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods.

[0154] When each functional module is divided according to its corresponding function, the vehicle may include: an acquisition module and a first switching module, etc. It should be noted that all relevant content of each step involved in the above method embodiments can be referenced from the functional description of the corresponding functional module, and will not be repeated here.

[0155] The vehicle provided in this embodiment is used to execute the above-described vehicle lighting control method, and thus can achieve the same effect as the above-described implementation method.

[0156] When using integrated units, the vehicle may include a processing module and a storage module. The processing module is used to control and manage the vehicle's movements. The storage module is used to support the vehicle in executing relevant program code and data.

[0157] The processing module may be a processor or a controller, which can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination of functions that implement computing capabilities, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, etc., and the storage module may be a memory.

[0158] This embodiment also provides a computer-readable storage medium storing computer program code. When the computer program code is run on a computer, the computer executes the above-described related method steps to implement a vehicle lighting control method in the above embodiment.

[0159] This embodiment also provides a computer program product that, when run on a computer, causes the computer to perform the aforementioned related steps to implement a vehicle lighting control method as described in the above embodiment.

[0160] In addition, the vehicle provided in the embodiments of this application may specifically be a chip, component or module. The vehicle may include a connected processor and a memory. The memory is used to store instructions. When the vehicle is running, the processor may call and execute the instructions to make the chip execute a vehicle lighting control method in the above embodiments.

[0161] In this embodiment, the vehicle, computer-readable storage medium, computer program product, or chip are all used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects of the corresponding methods provided above, and will not be repeated here.

[0162] Through the above description of the embodiments, those skilled in the art will understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0163] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for example, the division of modules or units is merely a logical functional division, and there may be other division methods in actual implementation; for example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0164] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A vehicle light control method characterized by, The method comprises: obtaining a current light mode of a vehicle and an ambient brightness outside the vehicle; when the ambient brightness is greater than a night threshold and less than a day threshold, switching the current light mode to a corresponding target light mode based on a vehicle speed and / or a change trend of the ambient brightness; when the current light mode is a day mode, the switching the current light mode to the corresponding target light mode based on the vehicle speed and / or the change trend of the ambient brightness comprises: if the change trend of the ambient brightness is from bright to dark and a change speed does not exceed a change threshold, switching the current light mode to a night mode in a case that a time when the vehicle speed exceeds a second speed threshold exceeds a third time length or a time when the vehicle speed does not exceed the second speed threshold exceeds a fourth time length; the third time length is less than the fourth time length; if the change trend of the ambient brightness is from bright to dark and the change speed exceeds the change threshold, switching the current light mode to a tunnel mode in a case that the vehicle enters a tunnel at a distance greater than a preset tunnel distance and the ambient brightness is less than the day threshold; wherein a state of a high beam in the day mode is a closed state, states of the high beam in the tunnel mode and the night mode are open states; and a switching rule of switching the tunnel mode to the day mode is different from a switching rule of switching the night mode to the day mode in a case that the ambient brightness is greater than the night threshold and less than the day threshold.

2. The method of claim 1, wherein, The method further comprises: when the vehicle is started, initializing the current light mode as the day mode if the ambient brightness is greater than or equal to the day threshold; initializing the current light mode as a dark start mode if the ambient brightness is less than the day threshold; wherein a state of the high beam in the dark start mode is continuously open for a first time length.

3. The method of claim 2, wherein, when the current light mode is the dark start mode, the switching the current light mode to the corresponding target light mode based on the vehicle speed and / or the change trend of the ambient brightness comprises: if a time when the vehicle speed exceeds a first speed threshold exceeds a second time length, switching the current light mode to a first target light mode, wherein a state of the high beam in the first target light mode is an open state; if the time when the vehicle speed exceeds the first speed threshold does not exceed the second time length, switching the current light mode to a second target light mode, wherein a state of the high beam in the second target light mode is a closed state.

4. The method of claim 1, characterized in that, when the current light mode is the night mode, the switching the current light mode to the corresponding target light mode based on the vehicle speed and / or the change trend of the ambient brightness comprises: if the change trend of the ambient brightness is from dark to bright, switching the current light mode to the day mode in a case that a time when the vehicle speed exceeds a third speed threshold exceeds a fifth time length or a time when the vehicle speed does not exceed the third speed threshold exceeds a sixth time length.

5. The method of claim 1, characterized in that, when the current light mode is the tunnel mode, the switching the current light mode to the corresponding target light mode based on the vehicle speed and / or the change trend of the ambient brightness comprises: if the change trend of the ambient brightness is from dark to light and the ambient brightness reaches a tunnel brightness threshold, switching the current light mode to the daytime mode; if the change trend of the ambient brightness is from dark to light and the time when the ambient brightness does not reach the tunnel brightness threshold exceeds a seventh time length, switching the current light mode to the nighttime mode; the tunnel brightness threshold is determined based on the ambient brightness when the daytime mode is switched to the tunnel mode.

6. The method of claim 1, wherein, After the current light mode of the vehicle and the ambient brightness outside the vehicle are acquired, the method further comprises: when the ambient brightness is less than or equal to a nighttime threshold, setting the current light mode as a third target light mode, in which the state of the headlamp is an open state; when the ambient brightness is greater than or equal to a daytime threshold, setting the current light mode as a fourth target light mode, in which the state of the headlamp is a closed state.

7. A vehicle light control device characterized by comprising: The device comprises: an acquisition module configured to acquire a current light mode of a vehicle and an ambient brightness outside the vehicle; a first switching module configured to, when the ambient brightness is greater than a nighttime threshold and less than a daytime threshold, switch the current light mode to a corresponding target light mode based on a vehicle speed and / or a change trend of the ambient brightness; the first switching module is specifically configured to, when the current light mode is a daytime mode, if the change trend of the ambient brightness is from light to dark and a change speed does not exceed a change threshold, in a case that the time when the vehicle speed exceeds a second speed threshold exceeds a third time length or the time when the vehicle speed does not exceed the second speed threshold exceeds a fourth time length, switch the current light mode to a nighttime mode; the third time length is less than the fourth time length; if the change trend of the ambient brightness is from light to dark and the change speed exceeds the change threshold, in a case that the distance when the vehicle enters a tunnel is greater than a preset tunnel distance and the ambient brightness is lower than the daytime threshold, switch the current light mode to a tunnel mode; wherein the state of the headlamp in the daytime mode is a closed state, the state of the headlamp in the tunnel mode and the nighttime mode are both open states; in a case that the ambient brightness is greater than the nighttime threshold and less than the daytime threshold, the switching rule of switching the tunnel mode to the daytime mode is different from that of switching the nighttime mode to the daytime mode.

8. A vehicle characterized by comprising: The vehicle comprises: a memory configured to store executable program codes; a processor configured to call and run the executable program codes from the memory, so that the vehicle performs the method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, when the computer program is executed, the method according to any one of claims 1 to 6 is realized. The computer readable storage medium stores a computer program, when the computer program is executed, the method according to any one of claims 1 to 6 is realized.

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