Vehicle lamp control method and device, vehicle and storage medium

Abstract

The invention discloses an automobile lamp control method and device, an automobile and a storage medium, and relates to the technical field of automobile lighting. According to the scheme, the method comprises the steps that under the condition that a headlamp of a target vehicle is turned on, an environment illumination value representing the illumination level of the environment where the target vehicle is located is continuously obtained; under the condition that the illumination standard exceeding time reaches the time threshold value, a headlamp turn-off instruction is generated; the illumination standard exceeding time is the duration when the environment illumination value exceeds the illumination closing threshold value of the headlamp. Therefore, in the scene of the tunnel group, the lamp is not immediately triggered to be turned off due to short light after driving out of the tunnel, and timing is interrupted due to darkening when the vehicle immediately enters the next section of tunnel, so that the headlamps are kept to be turned on, frequent starting and stopping are effectively avoided, and the continuous lighting effect and the driving safety are ensured.

Description

Technical Field

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

[0002] Automatic headlights are intelligent lighting systems that automatically turn low beams on or off based on ambient light sensors. They automatically turn on when entering low-light environments such as tunnels and automatically turn off when exiting, improving the convenience of daily driving.

[0003] However, in practical applications, it has been found that the system has significant defects when vehicles travel through a series of tunnels with short intervals, causing the headlights to frequently start and stop. More importantly, this frequent starting and stopping can result in the vehicle being in a state of ineffective lighting at the initial moment of entering a tunnel while continuously entering and exiting it. At this time, the driver's vision has not yet adapted to the darkness, thus creating a significant blind spot and safety hazard. Summary of the Invention

[0004] In view of this, this application aims to provide a vehicle headlight control method, device, vehicle, and storage medium that can effectively avoid frequent start-stop of headlights in scenarios such as tunnels, allowing the driver to always have a clear field of vision and improving the driver's driving comfort and operational safety.

[0005] According to a first aspect of this application, a vehicle headlight control method is provided, comprising: continuously acquiring an ambient illuminance value characterizing the ambient light level of the target vehicle when the headlights of the target vehicle are on; and generating a headlight shut-off command when the illuminance exceeds the threshold for a specified duration; wherein the illuminance exceeding the threshold duration is the duration during which the ambient illuminance value exceeds the headlight illuminance shut-off threshold. By continuously acquiring the ambient illuminance value when the headlights are on, and generating the shut-off command only when the duration of the ambient illuminance value exceeding the illuminance shut-off threshold reaches the threshold for a specified duration, the method can effectively filter out short-term fluctuations in ambient light. In scenarios involving multiple tunnels with short intervals, this method can avoid frequent starting and stopping of the headlights due to frequent light alternation, ensuring that the headlights remain on when the vehicle enters the next tunnel shortly after exiting the previous one, eliminating lighting gaps, providing the driver with a clear field of vision at all times, improving driving comfort and operational safety, and further ensuring safety during driving.

[0006] Optionally, generating a headlight-off command when the illuminance exceeds the threshold for a certain period includes: starting a timer after the ambient illuminance value first exceeds the headlight illuminance-off threshold; resetting and stopping the timer if the ambient illuminance value falls below the illuminance-off threshold during the timing process; and resetting the timer and generating the headlight-off command only when the timing duration reaches the threshold. By starting the timer after the ambient illuminance value first exceeds the illuminance-off threshold, resetting and stopping the timer if the ambient illuminance value falls below the threshold during the timing process, and only resetting the timer and generating the headlight-off command when the timing duration reaches the threshold, the method effectively filters out the interference of instantaneous fluctuations in ambient light, avoiding frequent starting and stopping of the headlights due to short-term changes in light. In scenarios with frequent changes in light and darkness, such as continuous tunnel groups, the headlights will not turn off immediately even if there is a brief period of excessive light after the vehicle exits the previous tunnel. If the vehicle then enters the next tunnel, the headlights will remain on, eliminating the lighting gap and ensuring that the driver always has a clear driving vision, further improving the safety and comfort of the driving process.

[0007] Optionally, resetting and stopping the timer if the ambient illuminance value falls below the illuminance off threshold during the timing process includes: calculating the rate of change of the ambient illuminance value during its rise; the rise includes at least the process of the ambient illuminance value continuously rising until it first exceeds the illuminance off threshold of the headlight; determining the adjustment amount of the illuminance off threshold based on the rate of change to obtain the adjusted illuminance off threshold; wherein the adjustment amount is positively correlated with the rate of change; if the ambient illuminance value is lower than the adjusted illuminance off threshold, resetting and stopping the timer. By dynamically adjusting the illuminance off threshold based on the rate of change of the ambient illuminance value during its rise, the accuracy and scene adaptability of the automatic headlight off judgment are improved. Specifically, this mechanism can effectively distinguish different light enhancement modes: in scenarios with gradually increasing light, such as cloudy days and early morning, a lower rate of change results in a smaller adjustment amount, making the adjusted off threshold close to the original set value, thereby avoiding the headlights not being able to turn off when the ambient light is sufficient due to an excessively high threshold, ensuring reasonable energy consumption during daily driving. In scenarios where vehicles continuously pass through a series of tunnels, the illumination rapidly increases upon exiting a tunnel. This high rate of change results in a significant adjustment, thus raising the temporary headlight shut-off threshold. This means that even if the illumination briefly exceeds the original threshold after exiting a tunnel, the system will not easily determine that the headlights are ready to turn off unless the intensity consistently reaches this dynamically raised new standard. If, during this period, the illumination slightly decreases and falls below the adjusted threshold due to entering the next tunnel, the timer will be reset, and the headlights will remain on. This ensures that the headlights provide continuous and stable illumination throughout the entire tunnel journey, eliminating the risk of lighting interruption and significantly improving driving safety.

[0008] Optionally, determining the adjustment amount of the illuminance off threshold based on the rate of change includes: if the rate of change is lower than a preset rate of change threshold and the current time is during sunrise, then the adjustment amount is determined to be a first adjustment amount; otherwise, the adjustment amount is determined to be a second adjustment amount; wherein the first adjustment amount is less than the second adjustment amount. By combining the rate of change of illuminance with whether the current time is during sunrise, the adjustment amount of the off threshold is comprehensively determined. For scenarios with a low rate of change and during sunrise, a smaller first adjustment amount can prevent the illuminance off threshold from being excessively raised, ensuring that the headlights can be turned off in time when the ambient light is sufficient, reducing unnecessary energy consumption and lamp wear, while also avoiding visual interference to other road users. For scenarios with a rate of change not lower than the rate of change threshold or during non-sunrise periods, a larger second adjustment amount can effectively increase the illuminance off threshold, filtering interference caused by instantaneous fluctuations in illuminance, preventing frequent timer resets that cause frequent headlight starts and stops, ensuring that the headlights remain stably on when the vehicle is passing through scenarios such as continuous tunnels, eliminating lighting gaps, and balancing the rationality of headlight off in different scenarios with driving safety.

[0009] Optionally, the step of the ambient illuminance value falling below the illuminance off threshold during the timing process includes: performing a sliding filter on the continuously sampled ambient illuminance values ​​during the timing process to obtain a filtered ambient illuminance value; if the filtered ambient illuminance value is lower than the illuminance off threshold, it is determined that the ambient illuminance value has fallen below the illuminance off threshold. By performing a sliding filter on the continuously sampled ambient illuminance values ​​during the timing process, and using the filtered ambient illuminance value as the basis for determining whether it has fallen below the illuminance off threshold, the instantaneous fluctuation interference of ambient light is effectively filtered out. This processing method makes the judgment of ambient illuminance changes more in line with the real light trend, avoids the timer's erroneous reset caused by a sudden drop in instantaneous light, and improves the continuity of the timing process and the reliability of the judgment results in scenarios with rapid changes in light. At the same time, since the sliding filter only smooths noise and does not mask the real, continuous light decline trend, it does not affect the system's normal headlight-off response when the vehicle actually enters a continuously bright environment.

[0010] Optionally, before generating the headlight shut-off command when the illuminance exceeds the time threshold, the method further includes: calculating the rate of change of the ambient illuminance value during its increase; the increase at least includes the continuous increase of the ambient illuminance value until it first exceeds the headlight illuminance shut-off threshold; determining the time threshold based on the rate of change; the time threshold is positively correlated with the rate of change. By dynamically determining the time threshold based on the rate of change during the increase of ambient illuminance, adaptive adjustment of the headlight shut-off judgment duration is achieved. In scenarios with rapidly increasing light intensity, a higher rate of change corresponds to a longer time threshold, which provides the system with a more sufficient observation period and effectively prevents the vehicle from mistakenly triggering the headlight shut-off due to a brief exceedance of the threshold during drastic changes in light, such as when exiting a tunnel, ensuring that the headlights remain stably on in sections of road such as continuous tunnels. In scenarios with slowly increasing light intensity, a lower rate of change corresponds to a shorter time threshold, which allows the system to more quickly confirm that the light intensity has stabilized at a high level, thereby generating the headlight shut-off command in a timely manner and avoiding unnecessary delays in shutting off the headlights in environments with sufficient brightness, such as dawn or cloudy days.

[0011] Optionally, before generating the headlight shut-off command when the illuminance exceeds the time threshold, the method further includes: after the ambient illuminance value first exceeds the headlight illuminance shut-off threshold, acquiring the driving speed of the target vehicle; determining the time threshold based on the driving speed and the rate of change; the time threshold being positively correlated with the driving speed. By introducing the driving speed as a parameter that, together with the rate of change, determines the time threshold, and making the time threshold positively correlated with both, the setting of the shut-off delay time can simultaneously respond to vehicle dynamics and changes in illumination, making a more reasonable and practical headlight shut-off decision, thus improving the driving experience.

[0012] According to a second aspect of this application, a vehicle lighting control device is provided, comprising: The acquisition module is used to continuously acquire ambient illuminance values ​​that characterize the ambient light level of the target vehicle when the headlights of the target vehicle are on. A control module is configured to generate a headlight shut-off command when the illuminance exceedance time reaches a time threshold; the illuminance exceedance time is the duration during which the ambient illuminance value exceeds the headlight illuminance shut-off threshold. According to a third aspect of this application, a computer-readable storage medium is provided, the storage medium storing a computer program configured to perform the methods described in any of the above embodiments.

[0013] According to a fourth aspect of this application, an electronic device is provided, comprising: a processor; a memory for storing processor-executable instructions; the processor being configured to perform the method described in any of the above embodiments.

[0014] According to a fifth aspect of this application, a vehicle is provided, including the aforementioned electronic equipment.

[0015] This application provides a vehicle headlight control method, device, vehicle, and storage medium. The solution includes: continuously acquiring ambient illuminance values ​​characterizing the ambient light level of the target vehicle when its headlights are on; generating a headlight-off command when the illuminance exceeds a time threshold; the illuminance exceeding time is the duration during which the ambient illuminance value exceeds the headlight illuminance-off threshold. Therefore, in tunnel scenarios, the brief brightness after exiting a tunnel will not immediately trigger headlight shutdown, while the subsequent dimming upon entering the next tunnel will interrupt the timer, allowing the headlights to remain on. This effectively avoids frequent start-stop cycles, ensuring continuous lighting and driving safety. Attached Figure Description

[0016] Figure 1 The diagram shown is a flowchart of a vehicle headlight control method provided in one embodiment of this application.

[0017] Figure 2 The diagram shown is a block diagram of a vehicle lighting control device provided in one embodiment of this application.

[0018] Figure 3 The diagram shown is a structural block diagram of an electronic device provided in one embodiment of this application. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Application Overview Automatic headlights are an intelligent lighting system that automatically turns low beam headlights on or off based on an ambient light sensor. This system measures ambient illuminance in real time and compares it to a preset threshold: when the illuminance is below the activation threshold, the headlights automatically turn on; after leaving a low-light environment, if the illuminance is above the deactivation threshold, the headlights automatically turn off. This mechanism improves the convenience of daily driving, and by setting a high deactivation threshold, it can, to some extent, suppress accidental headlight shut-off caused by momentary bright light interference.

[0021] However, in practical applications, it has been found that the method of avoiding frequent automatic headlight switching by increasing the off threshold is ineffective in scenarios involving multiple tunnels with short intervals. Because the light levels inside and outside the tunnels alternate frequently within a short period, sensor measurements fluctuate rapidly between the on and off thresholds, causing the headlights to frequently start and stop. More importantly, after exiting a tunnel, if the illuminance briefly exceeds the off threshold, the headlights are turned off; when the vehicle immediately enters the next tunnel, the system needs to detect light levels below the on threshold before reactivating the headlights. This lighting gap occurs precisely when the driver's vision is at the critical point of light and dark adaptation, resulting in a lack of effective lighting when the vehicle enters the tunnel, creating a significant blind spot and safety hazard.

[0022] To address the aforementioned issues, this application provides a vehicle headlight control method. The core of this method lies in introducing a delayed shutdown mechanism: when the ambient illuminance exceeds a shutdown threshold, the headlights are not immediately turned off, but a timer is initiated. A shutdown command is only generated after the illuminance value has remained above the threshold for a preset time threshold. If, during this delay, the ambient illuminance value drops below the shutdown threshold again, the timer is immediately reset. Therefore, in tunnel scenarios, the brief brightness after exiting a tunnel will not immediately trigger headlight shutdown, while the subsequent dimming upon entering the next tunnel will interrupt the timer, allowing the headlights to remain on. This effectively avoids frequent start-stop cycles, ensuring continuous lighting and driving safety.

[0023] After introducing the basic principles of this application, various non-limiting embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0024] Exemplary methods Figure 1 This is a schematic flowchart of a vehicle headlight control method provided in one embodiment of this application. Figure 1 The method described is executed by an onboard computing device, which may be a body control module (BCM), an onboard microcontroller unit (MCU), an onboard central processing unit (CPU), or an onboard lighting domain controller, but the embodiments of this application are not limited thereto.

[0025] like Figure 1 As shown, the method includes the following: Step S110: With the headlights of the target vehicle on, continuously acquire the ambient illuminance value, which represents the ambient light level of the target vehicle.

[0026] In the embodiments of this application, the target vehicle may refer to the motor vehicle to which the vehicle headlight control method of this application is applied, including various types of vehicles equipped with automatic headlights.

[0027] In this embodiment of the application, the headlight can refer to a lighting device installed on the front of the vehicle, mainly used to illuminate the road in front of the vehicle at night or in low visibility conditions, and typically includes low beam headlights and high beam headlights.

[0028] In this embodiment of the application, the ambient illuminance value is a physical quantity that characterizes the intensity of ambient light in the target vehicle, and the unit is usually lux (lx). The ambient illuminance value can be obtained in real time by an on-board ambient light sensor, and its value directly reflects the brightness of the environment.

[0029] Step S120: If the illuminance exceeds the time threshold, generate a headlight shut-off command; the illuminance exceeding the time threshold is the duration during which the ambient illuminance value exceeds the headlight illuminance shut-off threshold.

[0030] In this embodiment, the illuminance off threshold is used to determine whether the lighting conditions for turning off the headlights are met. When the ambient illuminance value remains above this threshold, it can be considered that the external environment is bright enough that there is no need to continue turning on the headlights, which may trigger the shutdown process. The illuminance off threshold is typically set higher than the headlight on threshold.

[0031] In this embodiment, the illuminance exceedance time can refer to the length of time during which the ambient illuminance value is continuously higher than the illuminance shut-off threshold. This is intended to distinguish between a continuous bright environment, such as daytime after exiting a tunnel, and a brief bright environment, such as a brief open section of road between tunnels. It starts accumulating from the moment the illuminance value first exceeds the shut-off threshold, and if the illuminance value falls back below the threshold during this period, the timer is reset to zero.

[0032] In this embodiment, the time threshold can refer to the minimum duration of the preset trigger headlight shut-off command, which can be used to filter out instantaneous fluctuations in ambient light. The time threshold can be pre-configured on the vehicle computing device, for example, set to 2-5 seconds. Only when the illuminance exceeds the standard for a period of time that reaches the threshold is it determined that the ambient light has stabilized and met the shut-off conditions.

[0033] In this embodiment of the application, the headlight off command can be used to instruct the headlights to switch from an on state to an off state.

[0034] In this embodiment, by continuously acquiring ambient illuminance values ​​while the headlights are on, a shutdown command is generated only when the duration of the ambient illuminance value exceeding the illuminance shutdown threshold reaches a time threshold. This effectively filters out transient fluctuations in ambient light. In scenarios with multiple tunnels in quick succession, this avoids frequent on / off cycles of the headlights due to alternating light patterns. It ensures that the headlights remain on when the vehicle enters the next tunnel shortly after exiting the previous one, eliminating lighting gaps and providing the driver with a clear field of vision. This improves driving comfort and operational safety, further enhancing safety during driving.

[0035] based on Figure 1 In addition to the method described in the embodiments of this specification, some specific implementation schemes of the method are also provided, which will be described below.

[0036] Optionally, generating a headlight-off command when the illuminance exceeds the standard for a specified period of time includes: Once the ambient illuminance value first exceeds the headlight illuminance off threshold, a timer is started to keep track of the time. If the ambient illuminance value falls below the illuminance off threshold during the timing process, the timer is reset and stopped. If the timer's duration reaches the time threshold, the timer is reset, and the headlight-off command is generated.

[0037] In this embodiment of the application, the first exceedance may refer to the situation where the ambient illuminance value rises from below the illuminance off threshold to exceed the illuminance off threshold for the first time.

[0038] In this embodiment of the application, the start timer continuously accumulates the elapsed time from the start time after the ambient illuminance value first exceeds the illuminance shutdown threshold.

[0039] In this embodiment of the application, the duration of the timer may refer to the duration during which the ambient illuminance value is continuously higher than the illuminance off threshold.

[0040] In this embodiment of the application, the timing process refers to the stage in which the timer continuously accumulates time after it is started.

[0041] In this embodiment of the application, the ambient illuminance value falling back to below the illuminance shutdown threshold can refer to the process of the ambient illuminance value decreasing from a state exceeding the illuminance shutdown threshold to a state below the illuminance shutdown threshold.

[0042] In this embodiment of the application, resetting the timer means setting the accumulated timing duration inside the timer to zero, restoring it to the initial value state before timing started.

[0043] In this embodiment of the application, stopping the timer means resetting its timing value and suspending the timer's timing operation function, so that it stops working until it is woken up by the next start command.

[0044] In this embodiment, a timer is started when the ambient illuminance value first exceeds the illuminance shutdown threshold. If the ambient illuminance value falls below the threshold during the timing process, the timer is reset and stopped. The timer is only reset and a headlight shutdown command is generated when the timer's duration reaches a time threshold. This effectively filters out the interference of instantaneous fluctuations in ambient light, preventing frequent start-stop cycles of the headlights due to short-term light changes. In scenarios with frequent changes in light and dark, such as continuous tunnel groups, even if the vehicle encounters a brief period of excessive light after exiting the previous tunnel, the headlights will not immediately turn off. If the vehicle then enters the next tunnel, the headlights will remain on, eliminating lighting gaps and ensuring the driver always has a clear field of vision, further improving driving safety and comfort.

[0045] Optionally, resetting and stopping the timer if the ambient illuminance value falls below the illuminance off threshold during the timing process includes: Calculate the rate of change of the ambient illuminance value during the rising process; the rising process includes at least the process in which the ambient illuminance value continues to rise until it first exceeds the illuminance off threshold of the headlight; The adjustment amount of the illuminance off threshold is determined based on the rate of change, resulting in the adjusted illuminance off threshold; wherein the adjustment amount is positively correlated with the rate of change; If the ambient illuminance value is lower than the adjusted illuminance off threshold, then the timer is reset and stopped.

[0046] In this embodiment, the rising process can refer to the stage where the ambient illuminance value changes from a lower level to a higher level, including the process where the ambient illuminance value continues to rise and exceeds the headlight illuminance off threshold for the first time. For example, when a vehicle exits a tunnel, the entire process from the low illuminance state inside the tunnel gradually increasing until the light intensity first exceeds the illuminance off threshold belongs to this rising process.

[0047] In this embodiment, the rate of change refers to the magnitude of change in ambient illuminance value per unit time, which is an indicator of how quickly ambient light intensity increases. Its specific value can be obtained by calculating the magnitude of change in ambient illuminance value per unit time. In practical applications, the rate of change can be calculated in various ways. For example, the maximum instantaneous slope of the ambient illuminance value changing with time during the increase can be used to reflect the stage of most intense light enhancement; alternatively, the ratio of the total change in ambient illuminance between the start and end points of the increase to the total time elapsed can be used, i.e., the average rate of change of the process. For example, during the process of a vehicle exiting a tunnel, if the light intensity suddenly increases from 300 lx to 800 lx within 0.5 seconds, its instantaneous maximum rate of change can reach 1000 lx / s; while considering the 2 seconds from exiting the tunnel entrance to complete exposure to the external environment, during which the illuminance steadily increases from 300 lx to 900 lx, its average rate of change is approximately 300 lx / s.

[0048] In this embodiment, the adjustment amount can refer to a specific value determined based on the calculated rate of change, representing the amount by which the original, fixed illuminance off threshold needs to be increased. The adjustment amount is positively correlated with the rate of change, meaning that the faster the light intensity increases during the increase, the larger the calculated adjustment amount will be.

[0049] In this embodiment, the adjustment amount is positively correlated with the rate of change. Specifically, this positive correlation means that the magnitude of the adjustment amount increases as the rate of change increases and decreases as the rate of change decreases. The mathematical relationship can take various forms, such as a simple linear proportional relationship, where the adjustment amount equals the rate of change multiplied by a fixed proportionality coefficient; or a non-linear functional relationship, such as a piecewise linear relationship or a non-linear functional relationship.

[0050] In the embodiments of this application, the initial illuminance off threshold before adjustment is generally greater than the illuminance on threshold. In some cases, the initial illuminance off threshold before adjustment can be set slightly higher than the illuminance on threshold, or even the two can be set to the same value.

[0051] In this embodiment of the application, the adjusted illuminance off threshold may refer to a new, temporary judgment threshold obtained by superimposing the adjustment amount with the originally set, fixed illuminance off threshold. For example, if the original off threshold is 1000 Lx and the calculated adjustment amount is 500 Lx, then the adjusted illuminance off threshold is 1500 Lx.

[0052] In this embodiment of the application, during the timing process, the adjusted threshold, instead of the original fixed threshold, will be used to determine whether the ambient illuminance value has dropped, thereby temporarily raising the light intensity threshold required to turn off the headlights.

[0053] Studies have found that in scenarios where natural light gradually increases, such as daylight, the rate of change in ambient illuminance is typically low. Simply setting a high illuminance off threshold in such scenarios could lead to headlights failing to turn off promptly, even on cloudy days or in the early morning when overall ambient light meets driving requirements, as the illuminance value remains in an intermediate state between the illuminance on and off thresholds. This results in unnecessary energy consumption and lamp wear, and could also visually disturb other road users. Conversely, in scenarios such as exiting a tunnel during the day, the rate of increase in ambient illuminance is higher, and the external environment after exiting the tunnel is usually brighter.

[0054] In this embodiment, the accuracy and scene adaptability of automatic headlight shut-off judgment are improved by dynamically adjusting the illuminance shut-off threshold based on the rate of change of ambient illuminance value during its increase. Specifically, this mechanism can effectively distinguish different light enhancement modes: in scenarios with gradually increasing light, such as cloudy days or early morning, the lower rate of change results in a smaller adjustment, making the adjusted shut-off threshold close to the original setting value. This avoids the headlights failing to shut off when ambient light is sufficient due to an excessively raised threshold, ensuring reasonable energy consumption during daily driving. In scenarios where the vehicle continuously passes through a series of tunnels, the illuminance increases rapidly upon exiting the tunnel, and the higher rate of change results in a larger adjustment, significantly improving the temporary shut-off judgment standard. This means that even if the illuminance briefly exceeds the original threshold after exiting the tunnel, as long as its intensity does not continuously reach this dynamically raised new standard, the system will not easily determine that the headlights shut off conditions are met; if the illuminance slightly decreases and falls below the adjusted threshold during this period due to entering the next tunnel, the timer will be reset, and the headlights will remain on. This ensures that the headlights provide continuous and stable illumination throughout the tunnel complex, eliminating the risk of lighting interruptions and thus significantly improving driving safety.

[0055] Optionally, determining the adjustment amount of the illuminance off threshold based on the rate of change includes: If the rate of change is lower than a preset rate of change threshold, and the current time is during sunrise, then the adjustment amount is determined to be the first adjustment amount; Otherwise, the adjustment amount is determined to be the second adjustment amount; wherein the first adjustment amount is less than the second adjustment amount.

[0056] In this embodiment, the rate of change threshold is a preset critical value used to determine whether the change in ambient illuminance is gradual or drastic. It is defined as the upper limit of the allowable change in ambient light intensity per unit time. When the actual monitored rate of change in illuminance is lower than this threshold, it indicates that the ambient light is gradually increasing, which usually corresponds to sunrise; conversely, it indicates a drastic change in light intensity, possibly occurring in scenarios such as exiting a tunnel or underground parking garage.

[0057] In this embodiment, the sunrise period can refer to a certain time range before and after the sunrise time of the target vehicle's geographical location on that day. This period typically corresponds to the dawn process where natural ambient light gradually increases from nothing to something. The specific time range can be dynamically set and adjusted according to the vehicle's geographical location and the sunrise time of the current season; for example, it can be set to within 30 minutes after the local sunrise time.

[0058] In this embodiment of the application, the first adjustment amount refers to the correction value of the illuminance off threshold set for a scene where the rate of change is lower than the rate of change threshold and the current time is during sunrise. Since the light change is gradual in such scenes, the value of the first adjustment amount is set to be small. For example, when the original illuminance off threshold is 1000 lx, the first adjustment amount can be set to 200 lx, so that the adjusted illuminance off threshold will not be raised too much, ensuring that the headlights can be turned off in time when the ambient light is sufficient.

[0059] In this embodiment, the second adjustment amount refers to the illuminance off threshold correction value set in all scenarios other than the applicable scenario of the first adjustment amount. This value is greater than the first adjustment amount, for example, it can be set to 500 lx. It is applicable to scenarios where the rate of change is not lower than the rate of change threshold or during non-sunrise periods, such as driving out of a tunnel during the day. By increasing the illuminance off threshold with a larger adjustment amount, interference caused by instantaneous fluctuations in illumination is effectively filtered out.

[0060] In the embodiments of this application, the adjusted illuminance off threshold may refer to a new, temporary threshold obtained by superimposing the first adjustment amount or the second adjustment amount with the original illuminance off threshold.

[0061] In this embodiment, the adjustment amount of the illuminance off threshold is determined by combining the rate of change of illumination with whether the current time is during sunrise. For scenarios with a low rate of change and during sunrise, a smaller first adjustment amount can prevent the illuminance off threshold from being excessively raised, ensuring that the headlights can be turned off in time when the ambient light is sufficient, reducing unnecessary power consumption and lamp wear, while avoiding visual interference to other road users. For scenarios with a rate of change not lower than the rate of change threshold or during non-sunrise periods, a larger second adjustment amount can effectively increase the illuminance off threshold, filter interference caused by instantaneous fluctuations in illumination, prevent the headlights from frequently starting and stopping due to frequent timer resets, ensure that the headlights remain stably on when the vehicle is passing through scenarios such as continuous tunnel groups, eliminate lighting gaps, and take into account the rationality of headlight off and driving safety in different scenarios.

[0062] Optionally, the step of the ambient illuminance value falling below the illuminance off threshold during the timing process includes: The ambient illuminance values ​​continuously sampled during the timing process are subjected to sliding filtering to obtain the filtered ambient illuminance values; If the filtered ambient illuminance value is lower than the illuminance off threshold, it is determined that the ambient illuminance value has fallen back below the illuminance off threshold.

[0063] In this embodiment of the application, continuous sampling can refer to periodically collecting instantaneous ambient illuminance values ​​at fixed time intervals during the timing process, thereby forming a sequence of illuminance values ​​arranged in chronological order. For example, the system can be set to collect ambient illuminance values ​​every 10 milliseconds or 100 milliseconds.

[0064] In this embodiment, the sliding filter process can employ a moving average filtering algorithm or a weighted moving average filtering algorithm. A fixed-length "time window" slides across the sampling sequence, calculating the average or weighted average of all data within the window at each iteration. This calculated result is then output as the representative value for the current moment, i.e., the filtered ambient illuminance value. For example, a window containing the most recent 10 sample values ​​can be used for the moving average calculation.

[0065] In this embodiment of the application, the filtered ambient illuminance value refers to the value representing the true ambient light intensity obtained after sliding filtering. Since the filtered ambient illuminance value has eliminated the influence of instantaneous fluctuations (such as the brief shadow encountered after driving out of the tunnel), it is closer to the actual stable state of ambient light.

[0066] In this embodiment, by performing a sliding filter on the continuously sampled ambient illuminance values ​​during the timing process, and using the filtered ambient illuminance values ​​as the basis for determining whether the illuminance has fallen below the illuminance off threshold, the instantaneous fluctuations in ambient light are effectively filtered out. This processing method makes the judgment of ambient illuminance changes more closely match the actual light trend, avoids timer erroneous resets caused by sudden drops in illuminance, and improves the continuity of the timing process and the reliability of the judgment results in scenarios with rapid changes in light. At the same time, since the sliding filter only smooths noise without masking the real, continuous trend of decreasing illuminance, it does not affect the system's normal headlight-off response when the vehicle actually enters a continuously bright environment.

[0067] Optionally, before generating the headlight-off command when the illuminance exceeds the time threshold, the method further includes: Calculate the rate of change of the ambient illuminance value during the rising process; the rising process includes at least the process in which the ambient illuminance value continues to rise until it first exceeds the illuminance off threshold of the headlight; The time threshold is determined based on the rate of change; the time threshold is positively correlated with the rate of change.

[0068] In this embodiment, the rising process can refer to the stage where the ambient illuminance value changes from a lower level to a higher level, including the process where the ambient illuminance value continues to rise and exceeds the headlight illuminance off threshold for the first time. For example, when a vehicle exits a tunnel, the entire process from the low illuminance state inside the tunnel gradually increasing until the light intensity first exceeds the illuminance off threshold belongs to this rising process.

[0069] In this embodiment of the application, the time threshold may refer to the minimum duration of the preset trigger headlight shut-off command. Its value is not fixed and may be set to be positively correlated with the rate of change of the ambient illuminance value during the rising process.

[0070] In this embodiment, the time threshold is positively correlated with the rate of change; the larger the rate of change, the longer the time threshold. This positive correlation can be a simple linear proportional relationship, where the time threshold increases proportionally with the rate of change. It can also be a piecewise function relationship, using different proportional coefficients in different rate of change intervals, or it can be a non-linear function relationship.

[0071] This means that the faster the light intensity increases, the longer the set time threshold should be. For example, in a scenario where a vehicle is rapidly exiting a tunnel during the day, a higher rate of change corresponds to a longer time threshold. Setting a relatively long time threshold allows sufficient time for the headlights to remain lit if the vehicle subsequently re-enters the tunnel. This is because the external environment after exiting the tunnel is usually quite bright, but the vehicle may soon re-enter. Appropriately extending the time required for judgment can prevent the headlights from being mistakenly turned off due to short and drastic changes in light intensity. Conversely, in a scenario where light intensity increases slowly at dawn, due to a lower rate of change, a relatively short time threshold can be used. This allows for a relatively short judgment process to generate a headlight-off command, thus turning off the headlights in a timely manner.

[0072] In this embodiment, the adaptive adjustment of the headlight-off judgment duration is achieved by dynamically determining the time threshold based on the rate of change of ambient illuminance during the increase process. In scenarios with rapidly increasing light intensity, a higher rate of change corresponds to a longer time threshold, providing the system with a more sufficient observation period. This effectively prevents the headlights from being mistakenly triggered to turn off due to a brief exceedance of the threshold during periods of drastic light changes, such as when the vehicle exits a tunnel, ensuring that the headlights remain stably on in sections of road such as continuous tunnels. In scenarios with slowly increasing light intensity, a lower rate of change corresponds to a shorter time threshold, allowing the system to more quickly confirm that the light intensity has stabilized at a high level, thus generating a headlight-off command in a timely manner and avoiding unnecessary delays in turning off the headlights in sufficiently bright environments such as dawn or cloudy days.

[0073] Optionally, before generating the headlight-off command when the illuminance exceeds the time threshold, the method further includes: After the ambient illuminance value first exceeds the illuminance off threshold of the headlights, the driving speed of the target vehicle is obtained; The time threshold is determined based on the driving speed and the rate of change; the time threshold is positively correlated with the driving speed.

[0074] In this embodiment, the time threshold is positively correlated with both the driving speed and the rate of change. That is, the value of the time threshold is jointly determined by both the driving speed and the rate of change, and its value increases accordingly as either parameter increases. When the driving speed is high or the rate of change is high, the determined time threshold is longer; conversely, when the speed is slow or the rate of change is low, the determined time threshold is shorter.

[0075] For example, when a vehicle exits a tunnel at a high speed, the combination of the high speed and the high rate of change will result in a longer time threshold. This threshold can prevent the headlights from turning off prematurely and ensure lighting for subsequent entry into the tunnel. Conversely, in scenarios where the vehicle is traveling at a low speed and the light intensity increases slowly, a relatively short time threshold can enable the lights to be turned off in time, avoiding energy waste caused by the headlights being on for a long time.

[0076] In this embodiment of the application, by introducing the driving speed as a parameter that, together with the rate of change, determines the time threshold, and making the time threshold positively correlated with both, the setting of the turn-off delay duration can simultaneously respond to vehicle dynamics and changes in lighting, making a more reasonable and practical decision to turn off the lights, thereby improving the driving experience.

[0077] Exemplary device The apparatus embodiments of this application can be used to execute the method embodiments of this application. For details not disclosed in the apparatus embodiments of this application, please refer to the method embodiments of this application.

[0078] Figure 2 The diagram shown is a block diagram of a vehicle lighting control device according to an embodiment of this application. Figure 2 As shown, the device 200 includes: The acquisition module 210 is used to continuously acquire the ambient illuminance value, which represents the ambient light level of the target vehicle, when the headlights of the target vehicle are turned on. The control module 220 is used to generate a headlight shut-off command when the illuminance exceeds the time threshold; the illuminance exceeding the time threshold is the duration during which the ambient illuminance value exceeds the illuminance shut-off threshold of the headlight.

[0079] Optionally, the control module 220 includes: A timing unit is used to start a timer to keep track of the time after the ambient illuminance value first exceeds the illuminance off threshold of the headlight; The comparison unit is used to reset and stop the timer if the ambient illuminance value falls below the illuminance off threshold during the timing process; The instruction unit is configured to reset the timer and generate the headlight-off instruction if the timer's duration reaches the time threshold.

[0080] Optionally, the comparison unit is used for: Calculate the rate of change of the ambient illuminance value during the rising process; the rising process includes at least the process in which the ambient illuminance value continues to rise until it first exceeds the illuminance off threshold of the headlight; The adjustment amount of the illuminance off threshold is determined based on the rate of change, resulting in the adjusted illuminance off threshold; wherein the adjustment amount is positively correlated with the rate of change; If the ambient illuminance value is lower than the adjusted illuminance off threshold, then the timer is reset and stopped.

[0081] Optionally, the comparison unit is used for: If the rate of change is lower than a preset rate of change threshold, and the current time is during sunrise, then the adjustment amount is determined to be the first adjustment amount; Otherwise, the adjustment amount is determined to be the second adjustment amount; wherein the first adjustment amount is less than the second adjustment amount.

[0082] Optionally, the comparison unit is used for: The ambient illuminance values ​​continuously sampled during the timing process are subjected to sliding filtering to obtain the filtered ambient illuminance values; If the filtered ambient illuminance value is lower than the illuminance off threshold, it is determined that the ambient illuminance value has fallen back below the illuminance off threshold.

[0083] Optionally, the device further includes: An adjustment module is used to calculate the rate of change of the ambient illuminance value during the rising process; the rising process includes at least the process in which the ambient illuminance value continues to rise until it first exceeds the illuminance off threshold of the headlight; and to determine the time threshold based on the rate of change; the time threshold is positively correlated with the rate of change.

[0084] Optionally, the adjustment module is further configured to: After the ambient illuminance value first exceeds the illuminance off threshold of the headlights, the driving speed of the target vehicle is obtained; The time threshold is determined based on the driving speed and the rate of change; the time threshold is positively correlated with the driving speed.

[0085] Exemplary electronic devices Below, for reference Figure 3 This describes an electronic device according to embodiments of the present application. Figure 3 A block diagram of an electronic device according to an embodiment of this application is illustrated.

[0086] like Figure 3 As shown, the electronic device 300 includes one or more processors 310 and memory 320.

[0087] The processor 310 may be another form of processing unit with data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device 300 to perform desired functions.

[0088] Specifically, processor 310 can be a general-purpose processor, such as a general-purpose central processing unit (CPU), a microprocessor, etc., or an application-specific integrated circuit (ASIC), or one or more integrated circuits used to control the execution of the program of the present invention. It can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. Processor 310 may also include a main processor, and may also include a baseband chip, a modem, etc.

[0089] The memory 320 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory. The non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 310 may execute the program instructions to implement the vehicle lighting control methods of the various embodiments of this application described above, and / or other desired functions.

[0090] In one example, the electronic device 300 may also include an input device 330 and an output device 340, which are interconnected via a bus system and / or other forms of connection mechanism (not shown).

[0091] In addition, the input device 330 can also be a device that receives user input data and information, such as a keyboard, mouse, camera, scanner, light pen, voice input device, touch screen, pedometer, or gravity sensor. The output device 340 can output various information to the outside. The output device 340 may include, for example, a display, speaker, printer, and communication network and its connected remote output devices.

[0092] Of course, for the sake of simplicity, Figure 3Only some of the components of the electronic device 300 relevant to this application are shown in this illustration; components such as buses, input / output interfaces, etc., are omitted. In addition, the electronic device 300 may include any other suitable components depending on the specific application.

[0093] Exemplary vehicle In addition to the methods and devices described above, embodiments of this application may also include a vehicle, comprising a vehicle body, headlights, and the electronic equipment.

[0094] Exemplary computer program products and computer-readable storage media In addition to the methods and devices described above, embodiments of this application may also be computer program products, which include computer program instructions that, when executed by a processor, cause the processor to perform the steps in the vehicle light control methods according to various embodiments of this application as described in the "Exemplary Methods" section of this specification.

[0095] The computer program product can be written in any combination of one or more programming languages ​​to perform the operations of the embodiments of this application. The programming languages ​​include object-oriented programming languages ​​such as Java and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0096] Furthermore, embodiments of this application may also be computer-readable storage media storing computer program instructions that, when executed by a processor, cause the processor to perform the steps of the vehicle light control methods according to various embodiments of this application described in the "Exemplary Methods" section of this specification.

[0097] The computer-readable storage medium may be any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0098] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0099] For the foregoing method embodiments, in order to simplify the description, they are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, because according to this application, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0100] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For apparatus embodiments, since they are basically similar to method embodiments, the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0101] The steps in the methods of the various embodiments of this application can be adjusted, merged, or deleted in order according to actual needs, and the technical features described in each embodiment can be replaced or combined.

[0102] The block diagrams of devices, equipment, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, equipment, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0103] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0104] The modules or submodules described as separate components may or may not be physically separate. The components that constitute a module or submodule may or may not be physical modules or submodules; that is, they may be located in one place or distributed across multiple network modules or submodules. Some or all of the modules or submodules can be selected to achieve the purpose of this embodiment's solution, depending on actual needs.

[0105] Furthermore, the functional modules or sub-modules in the various embodiments of this application can be integrated into one processing module, or each module or sub-module can exist physically separately, or two or more modules or sub-modules can be integrated into one module. The integrated modules or sub-modules described above can be implemented in hardware or in the form of software functional modules or sub-modules.

[0106] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0107] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software unit executed by a processor, or a combination of both. The software unit can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0108] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0109] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle headlight control method, characterized in that, include: With the headlights of the target vehicle on, continuously acquire ambient illuminance values ​​that characterize the ambient light level of the target vehicle. If the illuminance exceeds the standard for a certain period of time, a headlight shut-off command is generated; the illuminance exceeding the standard period is the duration during which the ambient illuminance value exceeds the headlight illuminance shut-off threshold.

2. The method according to claim 1, characterized in that, The step of generating a headlight-off command when the illuminance exceeds the standard for a specified period of time includes: Once the ambient illuminance value first exceeds the headlight illuminance off threshold, a timer is started to keep track of the time. If the ambient illuminance value falls below the illuminance off threshold during the timing process, the timer is reset and stopped. If the timer's duration reaches the time threshold, the timer is reset, and the headlight-off command is generated.

3. The method according to claim 2, characterized in that, The step of resetting and stopping the timer if the ambient illuminance value falls below the illuminance off threshold during the timing process includes: Calculate the rate of change of the ambient illuminance value during the rising process; the rising process includes at least the process in which the ambient illuminance value continues to rise until it first exceeds the illuminance off threshold of the headlight; The adjustment amount of the illuminance off threshold is determined based on the rate of change, resulting in the adjusted illuminance off threshold; wherein the adjustment amount is positively correlated with the rate of change; If the ambient illuminance value is lower than the adjusted illuminance off threshold, then the timer is reset and stopped.

4. The method according to claim 3, characterized in that, The step of determining the adjustment amount of the illuminance off threshold based on the rate of change includes: If the rate of change is lower than a preset rate of change threshold, and the current time is during sunrise, then the adjustment amount is determined to be the first adjustment amount; Otherwise, the adjustment amount is determined to be the second adjustment amount; wherein the first adjustment amount is less than the second adjustment amount.

5. The method according to claim 2, characterized in that, The condition that the ambient illuminance value falls below the illuminance off threshold during the timing process includes: The ambient illuminance values ​​continuously sampled during the timing process are subjected to sliding filtering to obtain the filtered ambient illuminance values; If the filtered ambient illuminance value is lower than the illuminance off threshold, it is determined that the ambient illuminance value has fallen back below the illuminance off threshold.

6. The method according to claim 1, characterized in that, Before generating the headlight-off command when the illuminance exceeds the time threshold, the method further includes: Calculate the rate of change of the ambient illuminance value during the rising process; the rising process includes at least the process in which the ambient illuminance value continues to rise until it first exceeds the illuminance off threshold of the headlight; The time threshold is determined based on the rate of change; the time threshold is positively correlated with the rate of change.

7. The method according to claim 6, characterized in that, Determining the time threshold based on the rate of change includes: After the ambient illuminance value first exceeds the illuminance off threshold of the headlights, the driving speed of the target vehicle is obtained; The time threshold is determined based on the driving speed and the rate of change; the time threshold is positively correlated with the driving speed.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer program instructions that, when executed by a processor, cause the processor to perform the method as described in any one of claims 1 to 7.

9. An electronic device, characterized in that, include: processor; Memory used to store the processor's executable instructions; The processor is used to perform the method according to any one of claims 1 to 7.

10. A vehicle, characterized in that, Includes headlights, and the electronic device as described in claim 9.

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