Vehicle light control method, device, equipment and storage medium

Abstract

The present invention belongs to the field of vehicle control technology and discloses a vehicle light control method, device, equipment and storage medium. The present invention determines the vehicle light to be adjusted based on the relative position between the information sign and the vehicle when an information sign is detected; adjusts the brightness of the vehicle light to be adjusted to a first brightness; obtains the signboard specification information corresponding to the information sign, and determines the second brightness of the vehicle light based on the first brightness and the signboard specification information; and performs a secondary adjustment on the brightness of the vehicle light to be adjusted based on the second brightness. Since the brightness of the vehicle light to be adjusted is adjusted when the information sign is detected, the brightness of the vehicle light is reduced, and the reflection intensity of the vehicle high beam on the sign is reduced, ensuring that the driver can read the information on the information sign normally.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control technology, and in particular to a vehicle light control method, device, equipment and storage medium. Background Art

[0002] At present, when driving at night, vehicle drivers generally use high beam mode in order to see the road conditions clearly and ensure safety. However, in actual driving scenarios (such as highways or sections of roads under construction), it is inevitable to observe roadside information signs (road signs, obstacle signs, etc.) to adjust the journey. However, in high beam mode, the brightness of the headlights is relatively high, and the reflections on the information signs will cause the driver to have difficulty reading the information on the information signs.

[0003] The above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is prior art. Summary of the Invention

[0004] The main purpose of the present invention is to provide a vehicle light control method, device, equipment and storage medium, aiming to solve the technical problem that the driver has difficulty reading information from the information sign due to the reflection of the high beam mode.

[0005] To achieve the above object, the present invention provides a vehicle light control method, the method comprising the following steps:

[0006] When an information sign is detected, determining the headlights to be adjusted based on the relative position between the information sign and the vehicle;

[0007] Adjusting the headlight brightness of the headlight to be adjusted to a first headlight brightness;

[0008] Obtaining the specification information of the sign corresponding to the information sign, and determining the brightness of the second headlight according to the brightness of the first headlight and the specification information of the sign;

[0009] The headlight brightness of the headlight to be adjusted is adjusted for the second time according to the second headlight brightness.

[0010] Optionally, the step of determining the brightness of the second headlight according to the brightness of the first headlight and the specification information of the sign includes:

[0011] Determine the size of the sign and the height of the sign from the ground according to the sign specification information;

[0012] Determining a first correction coefficient according to the size of the sign, and determining a second correction coefficient according to the height of the sign from the ground;

[0013] Get the voltage duty cycle corresponding to the headlight to be adjusted in the current vehicle;

[0014] The second headlight brightness is determined according to the first correction coefficient, the second correction coefficient, the voltage duty cycle, and the first headlight brightness.

[0015] Optionally, when the information sign is detected, the step of determining the headlights to be adjusted according to the relative position between the information sign and the vehicle includes:

[0016] When an information sign is detected, determining an angle value of the sign according to a relative position between the information sign and the vehicle;

[0017] Obtaining matrix specifications of a headlight matrix installed in the vehicle, and determining a target area based on the angle value of the signboard and the matrix specifications;

[0018] Part of the headlights in the headlight matrix located in the target area is used as the headlights to be adjusted.

[0019] Optionally, before the step of performing a secondary adjustment on the headlight brightness according to the second headlight brightness, the method further includes:

[0020] Obtain the current speed of the vehicle, and obtain the distance between the information sign and the vehicle to obtain the sign interval distance;

[0021] Determining a brightness adjustment duration according to the driving speed and the distance between the signs;

[0022] Accordingly, the step of performing a secondary adjustment on the brightness of the headlight according to the brightness of the second headlight includes:

[0023] determining a brightness adjustment rate according to the brightness of the first headlight, the brightness of the second headlight, and the brightness adjustment duration;

[0024] The headlight brightness of the headlight to be adjusted is adjusted secondary according to the brightness adjustment rate.

[0025] Optionally, before the step of determining the headlights to be adjusted based on the relative position between the information sign and the vehicle when the information sign is detected, the method further includes:

[0026] When a driving control signal is detected, obtaining a previous driving signal;

[0027] determining whether to start the automatic adjustment mode according to the previous driving signal and the driving control signal;

[0028] If the automatic adjustment mode is turned on, the image in front of the vehicle is collected;

[0029] The image in front of the vehicle is detected to determine whether an information sign is detected.

[0030] Optionally, the step of detecting the image in front of the vehicle and determining whether an information sign is detected includes:

[0031] Performing target detection on the image in front of the vehicle to determine whether there is an information sign;

[0032] If so, obtaining the distance between the information sign and the vehicle;

[0033] If the distance between the information sign and the vehicle is less than or equal to a preset distance threshold, it is determined that the information sign is detected.

[0034] Optionally, after the step of performing a secondary adjustment on the brightness of the headlight according to the brightness of the second headlight, the method further includes:

[0035] Collect images in front of the vehicle;

[0036] detecting whether the information sign exists in the image in front of the vehicle;

[0037] If the information sign does not exist in the image in front of the vehicle, the brightness of the headlight to be adjusted is restored to the initial brightness.

[0038] In addition, to achieve the above-mentioned object, the present invention further provides a vehicle light control device, which includes the following modules:

[0039] The identification detection module is used to determine the headlights to be adjusted based on the relative position between the information identification plate and the vehicle when the information identification plate is detected;

[0040] a brightness adjustment module, configured to adjust the brightness of the headlight to be adjusted to a first headlight brightness;

[0041] a brightness determination module, configured to obtain the specification information of the sign corresponding to the information sign, and determine the brightness of the second headlight according to the brightness of the first headlight and the specification information of the sign;

[0042] The secondary brightness adjustment module is used to perform a secondary adjustment on the brightness of the headlight to be adjusted according to the brightness of the second headlight.

[0043] In addition, to achieve the above-mentioned purpose, the present invention also proposes a headlight control device, which includes: a processor, a memory, and a headlight control program stored in the memory and runnable on the processor. When the headlight control program is executed by the processor, the steps of the headlight control method described above are implemented.

[0044] In addition, to achieve the above-mentioned purpose, the present invention further proposes a computer-readable storage medium, on which a vehicle light control program is stored. When the vehicle light control program is executed, the steps of the vehicle light control method described above are implemented.

[0045] The present invention determines the headlight to be adjusted based on the relative position between the information sign and the vehicle when an information sign is detected; adjusts the brightness of the headlight to be adjusted to a first headlight brightness; obtains the signboard specification information corresponding to the information sign and determines a second headlight brightness based on the first headlight brightness and the signboard specification information; and performs a secondary adjustment on the headlight brightness of the headlight to be adjusted based on the second headlight brightness. Since the brightness of the headlight to be adjusted is adjusted when the information sign is detected, the headlight brightness is reduced, and the intensity of the vehicle's high beam reflected on the sign is reduced, ensuring that the driver can normally read the information on the information sign. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the structure of an electronic device in the hardware operating environment involved in the embodiment of the present invention;

[0047] Figure 2 This is a flow chart of a first embodiment of a vehicle light control method according to the present invention;

[0048] Figure 3 A schematic diagram of the position of a signboard according to an embodiment of a vehicle light control method of the present invention;

[0049] Figure 4 This is a flow chart of a second embodiment of a vehicle light control method according to the present invention;

[0050] Figure 5 A curve showing the brightness change of a vehicle lamp according to an embodiment of a vehicle lamp control method of the present invention;

[0051] Figure 6 This is a brightness control flow chart of an embodiment of a vehicle light control method of the present invention;

[0052] Figure 7 FIG. 1 is a structural block diagram of a first embodiment of a vehicle light control device according to the present invention.

[0053] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0054] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0055] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle light control device in the hardware operating environment involved in an embodiment of the present invention.

[0056] like Figure 1 As shown, the electronic device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the user interface 1003 may optionally include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (WIreless-FIdelity, WI-FI) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM) or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk storage. The memory 1005 may optionally be a storage device independent of the aforementioned processor 1001.

[0057] Those skilled in the art will understand that Figure 1 The structure shown in the figure does not constitute a limitation to the electronic device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0058] like Figure 1 As shown, the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module and a vehicle light control program.

[0059] exist Figure 1 In the electronic device shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the electronic device of the present invention can be set in the car light control device, and the electronic device calls the car light control program stored in the memory 1005 through the processor 1001 and executes the car light control method provided by the embodiment of the present invention.

[0060] The embodiment of the present invention provides a vehicle light control method, referring to Figure 2 , Figure 2 FIG1 is a flow chart of a first embodiment of a vehicle light control method according to the present invention.

[0061] In this embodiment, the vehicle light control method includes the following steps:

[0062] Step S10: When the information sign is detected, the headlight to be adjusted is determined according to the relative position between the information sign and the vehicle.

[0063] It should be noted that the executor of this embodiment can be the headlight control device, and the headlight control device can be a controller installed in the vehicle. Of course, it can also be other devices that can adjust the brightness of the vehicle headlights. This embodiment does not limit this. In this embodiment and the following embodiments, the headlight control method of the present invention is explained by taking the headlight control device as an example.

[0064] It should be noted that the information signboard can be a signboard set up on the roadside for indicating information, such as: a road signboard, a fault signboard, a turn signboard, etc.

[0065] In actual use, the vehicle may be pre-installed with an image acquisition device, which may identify the image captured by the image acquisition device to determine whether there is an information sign in the captured image. If so, it may be determined that the information sign is detected.

[0066] In a specific implementation, the headlights in a vehicle are generally not individual headlights, but a headlight matrix (such as an LED light matrix). The headlights to be adjusted are determined based on the relative position between the information sign and the vehicle. The part of the headlights in the headlight matrix that can illuminate the information sign can be determined based on the relative position between the information sign and the vehicle, and this part of the headlights in the headlight matrix is ​​used as the headlights to be adjusted.

[0067] Furthermore, in order to quickly determine the headlight to be adjusted, step S10 in this embodiment may include:

[0068] When an information sign is detected, determining an angle value of the sign according to a relative position between the information sign and the vehicle;

[0069] Obtaining matrix specifications of a headlight matrix installed in the vehicle, and determining a target area based on the angle value of the signboard and the matrix specifications;

[0070] Part of the headlights in the headlight matrix located in the target area is used as the headlights to be adjusted.

[0071] It should be noted that the signboard angle value can be the angle formed between the two ends of the signboard and the vehicle identification line. The vehicle identification line can be the centerline of the vehicle, or of course, the centerline of the range viewed from the front of the driver drawn based on the position of the vehicle's cab.

[0072] It should be noted that determining the target area according to the signboard angle value and the matrix specifications may be determining the area of ​​the headlights in the headlight matrix that can illuminate the position corresponding to the signboard angle value according to the matrix specifications, thereby obtaining the target area.

[0073] It is understandable that the part of the headlights in the headlight matrix located in the target area is the part of the headlights that will affect the driver's observation of the information sign. Therefore, the part of the headlights in the headlight matrix located in the target area can be used as the headlights to be adjusted.

[0074] In actual use, since the illumination range of the headlights in a vehicle is generally fixed, the driver can calibrate the headlights in each area of ​​the headlight matrix according to the headlight illumination range, and map it with the angle value of the signboard, thereby constructing an angle area mapping table. At this time, the target area can be determined according to the angle value of the signboard and the matrix specifications, and the target area corresponding to the angle value of the signboard can be found in the angle area mapping table.

[0075] For ease of understanding, now combined Figure 3 The determination of the headlights to be adjusted is explained, but this is not a limitation of this solution. Figure 3 To obtain the signboard angle value, Figure 3 In the figure, the x-axis is the vehicle identification line, and α is the angle value of the above-mentioned signboard.

[0076] Step S20: adjusting the headlight brightness of the headlight to be adjusted to a first headlight brightness.

[0077] It should be noted that when an information sign is detected, the brightness of the headlights can be reduced to avoid reflections caused by the vehicle being in high-beam mode. Therefore, the brightness of the headlights to be adjusted can be adjusted to a first headlight brightness. The first headlight brightness can be pre-set by the administrator of the headlight control device and is lower than the headlight brightness of the vehicle in high-beam mode.

[0078] In a specific implementation, the brightness of the headlights can be adjusted by adjusting the voltage duty cycle (PWM) of the headlight matrix. Among them, adjusting the headlight brightness of the headlight to be adjusted to the first headlight brightness can be to determine the voltage duty cycle corresponding to the first headlight brightness, and then adjust the voltage duty cycle of the headlight to be adjusted in the vehicle's headlight matrix to the voltage duty cycle corresponding to the first headlight brightness.

[0079] In actual use, if the brightness of the headlight changes suddenly in a very short time, it may make the driver feel uncomfortable and may cause an accident. In order to avoid this phenomenon, when adjusting the brightness of the headlight to be adjusted to the first headlight brightness, you can set the light adjustment time, and then gradually adjust the headlight brightness to the first headlight brightness within the light adjustment time. For example: Assume that the voltage duty cycle corresponding to the first headlight brightness is a maxThe voltage duty cycle corresponding to the brightness of the first headlight is a1, and the light adjustment time is t1. Then the voltage duty cycle adjustment rate of the headlight to be adjusted is = (a max -a1) / t1.

[0080] Step S30: Obtaining the signboard specification information corresponding to the information signboard, and determining the second headlight brightness according to the first headlight brightness and the signboard specification information.

[0081] It should be noted that the signboard specification information may include information such as the signboard's dimensions (e.g., length, width, diameter, etc.) and the signboard's height from the ground. As a vehicle approaches the information signboard, the reflection of light gradually increases, and therefore, the brightness of the vehicle's headlights to be adjusted must be continuously adjusted during the approach process to ensure that the driver can properly read the information on the signboard. The second headlight brightness can be a level that ensures the driver can still properly read the information on the signboard even when the driver and the signboard are in a position where light intensity has the greatest impact.

[0082] In actual use, the corresponding reference object can be pre-set according to the specifications and acquisition angle of the image acquisition device installed on the vehicle. When it is recognized that an information sign exists in the image summary collected by the image acquisition device, the information sign can be compared with the reference object to determine the signboard specification information of the information sign.

[0083] Furthermore, in order to reasonably determine the brightness of the second headlight, step S30 in this embodiment may include:

[0084] Determine the size of the sign and the height of the sign from the ground according to the sign specification information;

[0085] Determining a first correction coefficient according to the size of the sign, and determining a second correction coefficient according to the height of the sign from the ground;

[0086] Get the voltage duty cycle corresponding to the headlight to be adjusted in the current vehicle;

[0087] The second headlight brightness is determined according to the first correction coefficient, the second correction coefficient, the voltage duty cycle, and the first headlight brightness.

[0088] It should be noted that determining the signboard size and the signboard height from the ground based on the signboard specification information may be performed by parsing the signboard specification information and extracting the signboard size and the signboard height from the signboard specification information. Determining the first correction coefficient based on the signboard size may be performed by searching a coefficient size mapping table for a correction coefficient corresponding to the signboard size and using the correction coefficient found as the first correction coefficient; determining the second correction coefficient based on the signboard height from the ground may be performed by searching a height coefficient mapping table for a correction coefficient corresponding to the signboard height from the ground and using the correction coefficient found as the second correction coefficient. Since the headlight brightness of the headlight to be adjusted has been pre-adjusted to the first headlight brightness, the voltage duty cycle corresponding to the headlight to be adjusted in the current vehicle is actually the voltage duty cycle corresponding to the first headlight brightness.

[0089] Among them, the coefficient size mapping table contains the mapping relationship between the signboard size and the correction coefficient, and the height coefficient mapping table contains the mapping relationship between the signboard height from the ground and the correction coefficient. The coefficient size mapping table and the height coefficient mapping table can be pre-set by the manager of the headlight control equipment according to actual needs.

[0090] In a specific implementation, the brightness of the second headlight can be calculated according to the first correction coefficient, the second correction coefficient, the voltage duty cycle and the brightness of the first headlight using a brightness calculation formula;

[0091] The brightness calculation formula is:

[0092] T2=k1*k2*a%(T1)

[0093] Where T2 is the brightness of the second headlight; k1 is the first correction coefficient, and its value range is (0, 1); k2 is the second correction coefficient, and its value range is (0, 1); a% is the voltage duty cycle; T1 is the brightness of the first headlight.

[0094] Since the larger the sign, the less likely the driver is to be affected by reflections when reading the information on it, the sign size is directly proportional to the first correction factor. Similarly, the higher the sign's height from the ground, the less likely the driver is to be affected by reflections when reading the information on it, so the sign's height from the ground is directly proportional to the second correction factor.

[0095] In actual use, when driving at night, if the brightness of the car lights is too low, the driver may not be able to identify the road conditions. Therefore, the minimum values ​​of the first correction coefficient and the second correction coefficient can be set. For example, the minimum value of the first correction coefficient is set to 0.3, and the minimum value of the second correction coefficient is set to 0.4.

[0096] Step S40: performing a secondary adjustment on the headlight brightness of the headlight to be adjusted according to the second headlight brightness.

[0097] It should be noted that the secondary adjustment of the headlight brightness of the headlight to be adjusted according to the second headlight brightness may be to directly adjust the headlight brightness of the headlight to be adjusted to the second headlight brightness on the basis of the first headlight brightness.

[0098] In a specific implementation, in order to avoid sudden changes in the headlights in a short period of time, which may cause visual discomfort to the driver, a light adjustment time period may be set, and then the headlight brightness of the headlight to be adjusted is gradually adjusted to the second headlight brightness within the light adjustment time period. In this case, before step S40 in this embodiment, the following steps may be further included:

[0099] Obtain the current speed of the vehicle, and obtain the distance between the information sign and the vehicle to obtain the sign interval distance;

[0100] Determining a brightness adjustment duration according to the driving speed and the distance between the signs;

[0101] Accordingly, the step S40 may include:

[0102] determining a brightness adjustment rate according to the brightness of the first headlight, the brightness of the second headlight, and the brightness adjustment duration;

[0103] The headlight brightness of the headlight to be adjusted is adjusted secondary according to the brightness adjustment rate.

[0104] It should be noted that obtaining the distance between the information sign and the vehicle and obtaining the sign interval distance may involve obtaining the distance between the vehicle and the information sign and using the obtained distance as the sign interval distance. Determining the brightness adjustment duration based on the driving speed and the sign interval distance may involve calculating the ratio between the sign interval distance and the driving speed and using the ratio as the brightness adjustment duration.

[0105] Determining the brightness adjustment rate according to the brightness of the first headlight, the brightness of the second headlight and the brightness adjustment time can be calculating the difference between the brightness of the first headlight and the brightness of the second headlight, and using the ratio of the difference to the brightness adjustment time as the brightness adjustment rate.

[0106] In actual use, performing a secondary adjustment on the headlight brightness of the headlight to be adjusted according to the brightness adjustment rate may be to gradually reduce the headlight brightness of the headlight to be adjusted according to the brightness adjustment rate until it is reduced to the second headlight brightness.

[0107] For example: assuming the brightness of the first headlight is T1, its corresponding voltage duty cycle is a%, the brightness of the second headlight is T2, the identification interval distance is L2, and the current speed of the vehicle is v, then the brightness adjustment duration t2 = L2 / v, and the brightness adjustment rate = (T1-T2) / t2.

[0108] This embodiment determines the headlight to be adjusted based on the relative position between the information sign and the vehicle when an information sign is detected; adjusts the brightness of the headlight to be adjusted to a first headlight brightness; obtains the signboard specification information corresponding to the information sign and determines a second headlight brightness based on the first headlight brightness and the signboard specification information; and performs a secondary adjustment of the headlight brightness of the headlight to be adjusted based on the second headlight brightness. Since the brightness of the headlight to be adjusted is adjusted when the information sign is detected, the headlight brightness is reduced, thereby reducing the intensity of the vehicle's high beam reflected on the signboard, ensuring that the driver can normally read the information on the information sign.

[0109] refer to Figure 4 , Figure 4 FIG2 is a flow chart of a second embodiment of a vehicle light control method according to the present invention.

[0110] Based on the first embodiment, the vehicle light control method of this embodiment further includes, before step S10:

[0111] Step S01: when a driving control signal is detected, obtaining a previous driving signal.

[0112] It should be noted that the drive control signal can be a control signal for adjusting the lighting mode of the vehicle. The drive control signal can be a signal generated by a controller in another vehicle and sent to the vehicle light control device after the user operates the vehicle to adjust the lighting mode. For example: when the user operates the vehicle to adjust the lighting mode, the body controller in the vehicle will generate a drive control signal according to the user's operation, and then send the generated drive control signal to the vehicle light control device.

[0113] In specific implementation, the drive control signals can be divided into four types, as shown in the following table:

[0114] Signal name Signal meaning Low Beam ON Low beam on Manual High Beam High beam in manual mode ADB ON ADB function is enabled ADB&High Beam OFF High beam off

[0115] The previous driving signal may be a control signal for adjusting the lighting mode last time, wherein the ADB function is a function for automatically adjusting the brightness of the headlights in the high beam mode.

[0116] Step S02: determining whether to start an automatic adjustment mode according to the previous driving signal and the driving control signal.

[0117] In actual use, when it comes to manual high beam switching, the method of immediate lighting and extinguishing is adopted to ensure driving safety. When switching between low beam and ADB functions, the method of gradual lighting and extinguishing is adopted, which is more friendly to the vision of oncoming drivers. Therefore, according to different previous driving signals and driving control signals, the system status changes of the vehicle can be shown in the following table:

[0118]

[0119]

[0120] It should be noted that if the system state determined by the previous drive signal and drive control signal changes, and when the change is completed, the ADB function is in the startup state (just started or maintained), it can be determined that the automatic adjustment mode is turned on; if the ADB function is in the off state, it can be determined that the automatic adjustment mode is not turned on.

[0121] Step S03: If the automatic adjustment mode is turned on, an image in front of the vehicle is collected.

[0122] It is understandable that if the automatic adjustment mode is turned on, it means that the brightness of the headlights needs to be automatically adjusted in high beam mode. Therefore, at this time, the image in front of the vehicle can be captured by the image acquisition device installed on the vehicle to determine whether the information sign is detected.

[0123] Step S04: Detect the image in front of the vehicle to determine whether an information sign is detected.

[0124] It should be noted that detecting the image in front of the vehicle and determining whether the information sign is detected can be performed using a pre-set target recognition model. The target recognition model can be a pre-trained neural network model that can recognize and mark the information sign in the image.

[0125] Furthermore, since the observation ability of the human eye is different from that of a machine, in some cases, the machine may detect an information sign, but the human eye may not be able to see the sign. If the headlight brightness is adjusted at this time, the user's actual experience may be degraded, or even the user may mistakenly believe that the vehicle has a malfunction. To avoid this situation, step S04 in this embodiment may include:

[0126] Performing target detection on the image in front of the vehicle to determine whether there is an information sign;

[0127] If so, obtaining the distance between the information sign and the vehicle;

[0128] If the distance between the information sign and the vehicle is less than or equal to a preset distance threshold, it is determined that the information sign is detected.

[0129] It should be noted that object detection in the image ahead of the vehicle to determine whether an information sign is present can be performed using a pre-trained object recognition model. The preset distance threshold can be pre-set by the manager of the headlight control device based on the driver's observable distance.

[0130] In a specific implementation, even if there is an information sign in the image in front of the vehicle, if the distance between the information sign and the vehicle is still far, the driver cannot actually see the information sign. Therefore, when the information sign is detected in the image in front of the vehicle, the distance between the information sign and the vehicle can be obtained first, and then the distance between the information sign and the vehicle can be compared with a preset distance threshold to determine whether to continue with the subsequent steps and adjust the brightness of the headlights.

[0131] It is understandable that if the distance between the information sign and the vehicle is less than or equal to the preset distance threshold, it means that the driver can see the information sign normally. Therefore, it can be determined that the information sign is detected and subsequent steps can be performed to adjust the brightness of the headlights.

[0132] Furthermore, in order to ensure the actual user experience, after the vehicle passes the information sign, the brightness of the vehicle lights can be restored to the original state. In this case, after step S40 in this embodiment, the following steps may be further included:

[0133] Collect images in front of the vehicle;

[0134] detecting whether the information sign exists in the image in front of the vehicle;

[0135] If the information sign does not exist in the image in front of the vehicle, the brightness of the headlight to be adjusted is restored to the initial brightness.

[0136] It should be noted that the image in front of the vehicle can be captured by an image capture device installed in the vehicle. The initial brightness can be the brightness of the headlight to be adjusted before it is adjusted to the first headlight brightness. Of course, to prevent subsequent impact on the automatic adjustment of the headlight brightness, data related to the information sign can also be cleared. For example, data such as the sign size, sign height from the ground, and sign angle corresponding to the information sign can be cleared or reset to zero.

[0137] It is understandable that if it is detected that the previously detected information sign does not exist in the image in front of the vehicle, it means that as the vehicle moves forward, the driver has passed the information sign and can no longer observe the information sign. At this time, the information sign is equivalent to being moved out of the driver's field of vision. Therefore, the brightness of the headlights can be restored to the initial brightness, so that the vehicle can continue to operate in the state before encountering the information sign.

[0138] In a specific implementation, to avoid visual discomfort to the driver caused by rapid changes in headlight brightness within a short period of time, a brightness adjustment duration can be pre-set. Then, when restoring the brightness of the headlight to be adjusted to its initial brightness, the brightness of the headlight to be adjusted can be gradually adjusted within the brightness adjustment duration to gradually restore it to its initial brightness. For example, assuming the initial brightness is Tmax, the current brightness of the headlight to be adjusted is Tnow, and the pre-set brightness adjustment duration is tc, then the brightness adjustment speed when restoring the brightness of the headlight to be adjusted to its initial brightness = (Tmax - Tnow) / tc.

[0139] For ease of understanding, now combined Figure 5 and Figure 6 The vehicle light control method of the present invention is described, but is not limited to this solution, wherein: Figure 5 is the lamp brightness change curve, Figure 6 This is the brightness control flow chart. Figure 5 and Figure 6 In the figure, L1 is the preset distance threshold, T1 is the brightness of the first headlight, T2 is the brightness of the second headlight, t1 is the brightness adjustment time for adjusting the headlight brightness to the first headlight brightness, t2 is the brightness adjustment time for adjusting the headlight brightness from the first headlight brightness to the second headlight brightness, and t3 is the brightness adjustment time t3 for restoring the headlight brightness from the second headlight brightness to the initial brightness. The ADB controller is the headlight control device described in this embodiment, and the LED is the headlight to be adjusted described in the above embodiments. Figure 5 The specific calculation of T2, t2 and the dimming rate has been described in the above embodiments and will not be repeated here.

[0140] This embodiment obtains the previous drive signal upon detecting a drive control signal; determines whether to activate the automatic adjustment mode based on the previous drive signal and the drive control signal; if the automatic adjustment mode is activated, captures an image in front of the vehicle; and detects the image in front of the vehicle to determine whether an information sign is detected. Because specific system state changes are determined based on the drive control signal and the previous drive information, determining whether to activate the automatic adjustment mode based on the system state changes, and recognizing the image in front of the vehicle when the automatic adjustment mode is activated, thereby determining whether the information sign is detected and whether the headlight brightness needs to be adjusted, the headlight control method of the present invention is more suitable for actual use.

[0141] In addition, an embodiment of the present invention further provides a storage medium, on which a vehicle light control program is stored. When the vehicle light control program is executed by a processor, the steps of the vehicle light control method described above are implemented.

[0142] Reference Figure 7 , Figure 7FIG. 1 is a structural block diagram of a first embodiment of a vehicle light control device according to the present invention.

[0143] like Figure 7 As shown, the vehicle light control device proposed in the embodiment of the present invention includes:

[0144] The identification detection module 10 is used to determine the headlights to be adjusted based on the relative position between the information identification plate and the vehicle when the information identification plate is detected;

[0145] a brightness adjustment module 20, configured to adjust the brightness of the headlight to be adjusted to a first headlight brightness;

[0146] a brightness determination module 30 for obtaining the specification information of the sign corresponding to the information sign, and determining the brightness of the second headlight according to the brightness of the first headlight and the specification information of the sign;

[0147] The secondary brightness adjustment module 40 is used to perform secondary adjustment on the brightness of the headlight to be adjusted according to the second headlight brightness.

[0148] This embodiment determines the headlight to be adjusted based on the relative position between the information sign and the vehicle when an information sign is detected; adjusts the brightness of the headlight to be adjusted to a first headlight brightness; obtains the signboard specification information corresponding to the information sign and determines a second headlight brightness based on the first headlight brightness and the signboard specification information; and performs a secondary adjustment of the headlight brightness of the headlight to be adjusted based on the second headlight brightness. Since the brightness of the headlight to be adjusted is adjusted when the information sign is detected, the headlight brightness is reduced, thereby reducing the intensity of the vehicle's high beam reflected on the signboard, ensuring that the driver can normally read the information on the information sign.

[0149] Furthermore, the brightness determination module 30 is also used to determine the size of the signboard and the height of the signboard from the ground based on the signboard specification information; determine a first correction coefficient based on the size of the signboard, and determine a second correction coefficient based on the height of the signboard from the ground; obtain the voltage duty cycle corresponding to the headlight to be adjusted in the current vehicle; determine the brightness of the second headlight based on the first correction coefficient, the second correction coefficient, the voltage duty cycle and the brightness of the first headlight.

[0150] Furthermore, the identification detection module 10 is also used to determine the angle value of the information sign according to the relative position between the information sign and the vehicle when the information sign is detected; obtain the matrix specifications of the headlight matrix installed in the vehicle, and determine the target area according to the angle value of the sign and the matrix specifications; and use part of the headlights in the headlight matrix located in the target area as the headlights to be adjusted.

[0151] Furthermore, the secondary brightness adjustment module 40 is further configured to obtain the current speed of the vehicle and the distance between the information sign and the vehicle to obtain the sign interval distance; and determine the brightness adjustment duration based on the speed and the sign interval distance.

[0152] The secondary brightness adjustment module 40 is further used to determine a brightness adjustment rate according to the brightness of the first headlight, the brightness of the second headlight and the brightness adjustment duration; and perform a secondary adjustment on the headlight brightness of the headlight to be adjusted according to the brightness adjustment rate.

[0153] Furthermore, the identification detection module 10 is also used to obtain the previous driving signal when a driving control signal is detected; determine whether to turn on the automatic adjustment mode based on the previous driving signal and the driving control signal; if the automatic adjustment mode is turned on, collect the image in front of the vehicle; detect the image in front of the vehicle to determine whether an information sign is detected.

[0154] Furthermore, the sign detection module 10 is also used to perform target detection on the image in front of the vehicle to determine whether there is an information sign; if so, obtain the distance between the information sign and the vehicle; if the distance between the information sign and the vehicle is less than or equal to a preset distance threshold, it is determined that the information sign is detected.

[0155] Furthermore, the secondary brightening module 40 is also used to capture the image in front of the vehicle; detect whether the information sign exists in the image in front of the vehicle; if the information sign does not exist in the image in front of the vehicle, restore the brightness of the headlight to be adjusted to the initial brightness.

[0156] It should be understood that the above is only an example and does not constitute any limitation to the technical solution of the present invention. In specific applications, those skilled in the art can make settings as needed, and the present invention does not impose any limitation on this.

[0157] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of the present invention. In practical applications, technicians in this field can select part or all of it according to actual needs to achieve the purpose of the embodiment scheme, and no limitation is made here.

[0158] In addition, for technical details not fully described in this embodiment, reference can be made to the vehicle light control method provided in any embodiment of the present invention, and will not be repeated here.

[0159] In addition, it should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0160] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0161] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, or of course by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product is stored in a storage medium (such as a read-only memory (ROM) / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0162] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A vehicle light control method, characterized in that: The vehicle light control method comprises the following steps: When an information sign is detected, determining the headlights to be adjusted based on the relative position between the information sign and the vehicle; Adjusting the headlight brightness of the headlight to be adjusted to a first headlight brightness; Obtaining the specification information of the sign corresponding to the information sign, and determining the brightness of the second headlight according to the brightness of the first headlight and the specification information of the sign; performing a secondary adjustment on the headlight brightness of the headlight to be adjusted according to the second headlight brightness; Before the step of performing a secondary adjustment on the brightness of the headlight according to the brightness of the second headlight, the method further includes: Obtain the current speed of the vehicle, and obtain the distance between the information sign and the vehicle to obtain the sign interval distance; Determining a brightness adjustment duration according to the driving speed and the distance between the signs; Accordingly, the step of performing a secondary adjustment on the brightness of the headlight according to the brightness of the second headlight includes: determining a brightness adjustment rate according to the brightness of the first headlight, the brightness of the second headlight, and the brightness adjustment duration; The headlight brightness of the headlight to be adjusted is adjusted secondary according to the brightness adjustment rate.

2. The vehicle light control method according to claim 1, wherein: The step of determining the brightness of the second headlight according to the brightness of the first headlight and the specification information of the sign includes: Determine the size of the sign and the height of the sign from the ground according to the sign specification information; Determining a first correction coefficient according to the size of the sign, and determining a second correction coefficient according to the height of the sign from the ground; Get the voltage duty cycle corresponding to the headlight to be adjusted in the current vehicle; The second headlight brightness is determined according to the first correction coefficient, the second correction coefficient, the voltage duty cycle, and the first headlight brightness.

3. The vehicle light control method according to claim 1, wherein: The step of determining the headlights to be adjusted based on the relative position between the information sign and the vehicle when the information sign is detected includes: When an information sign is detected, determining an angle value of the sign according to a relative position between the information sign and the vehicle; Obtaining matrix specifications of a headlight matrix installed in the vehicle, and determining a target area based on the angle value of the signboard and the matrix specifications; Part of the headlights in the headlight matrix located in the target area is used as the headlights to be adjusted.

4. The vehicle light control method according to claim 1, wherein: Before the step of determining the headlights to be adjusted based on the relative position between the information sign and the vehicle when the information sign is detected, the method further includes: When a driving control signal is detected, obtaining a previous driving signal; determining whether to start the automatic adjustment mode according to the previous driving signal and the driving control signal; If the automatic adjustment mode is turned on, the image in front of the vehicle is collected; The image in front of the vehicle is detected to determine whether an information sign is detected.

5. The vehicle light control method according to claim 4, wherein: The step of detecting the image in front of the vehicle and determining whether an information sign is detected includes: Performing target detection on the image in front of the vehicle to determine whether there is an information sign; If so, obtaining the distance between the information sign and the vehicle; If the distance between the information sign and the vehicle is less than or equal to a preset distance threshold, it is determined that the information sign is detected.

6. The vehicle light control method according to any one of claims 1 to 5, characterized in that: After the step of performing a secondary adjustment on the brightness of the headlight according to the brightness of the second headlight, the method further includes: Collect images in front of the vehicle; detecting whether the information sign exists in the image in front of the vehicle; If the information sign does not exist in the image in front of the vehicle, the brightness of the headlight to be adjusted is restored to the initial brightness.

7. A vehicle light control device, characterized in that: The vehicle light control device includes the following modules: An identification detection module is used to determine the headlights to be adjusted based on the relative position between the information identification plate and the vehicle when the information identification plate is detected; a brightness adjustment module, configured to adjust the brightness of the headlight to be adjusted to a first headlight brightness; a brightness determination module, configured to obtain the specification information of the sign corresponding to the information sign, and determine the brightness of the second headlight according to the brightness of the first headlight and the specification information of the sign; a secondary brightness adjustment module, configured to perform a secondary adjustment on the brightness of the headlight to be adjusted according to the brightness of the second headlight; The secondary brightness adjustment module is further configured to obtain the current speed of the vehicle and the distance between the information sign and the vehicle to obtain the sign interval distance; and determine the brightness adjustment duration based on the speed and the sign interval distance. The secondary brightness adjustment module is further used to determine a brightness adjustment rate based on the brightness of the first headlight, the brightness of the second headlight and the brightness adjustment duration; and perform a secondary adjustment on the headlight brightness of the headlight to be adjusted according to the brightness adjustment rate.

8. A vehicle light control device, characterized in that: The vehicle light control device includes: a processor, a memory, and a vehicle light control program stored in the memory and executable on the processor. When the vehicle light control program is executed by the processor, the steps of the vehicle light control method according to any one of claims 1 to 7 are implemented.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a vehicle light control program, which, when executed, implements the steps of the vehicle light control method according to any one of claims 1 to 7.

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