A Dual-Lamp Projection Adaptive Correction Method and System Based on Suspension Height Adjustment

Abstract

The present invention provides a dual-lamp projection adaptive correction method and system based on suspension height adjustment, belonging to the technical field of intelligent vehicle lighting control. It includes: calculating the real-time height difference between the front suspension and the rear suspension of the vehicle; calculating the angle difference of the vehicle suspension based on the real-time height difference and the wheelbase of the vehicle; calculating the downward inclination angle of the headlamp projection after the body height changes based on the angle difference and the headlamp module parameters; correcting the headlamp height according to the updated downward inclination angle of the headlamp projection; updating the starting projection distance of the headlamp according to the corrected headlamp height, and calculating the single-lamp projection width; calculating the number of pixel points in the overlapping area of the headlamp projection based on the single-lamp projection width and the distance between the left and right headlamps; calculating the offset pixel points based on the number of pixel points in the overlapping area of the headlamp projection and the headlamp module parameters; controlling the projection state of the pixel points in the headlamp module based on the offset pixel points. It ensures that under different suspension height conditions, the dual-lamp projection can maintain a consistent light and shadow effect.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent vehicle lighting control, and particularly to a dual-lamp projection adaptive correction method and system based on suspension height adjustment. Background Art

[0002] In intelligent vehicle lighting technology, the dual-lamp fusion solution uses a pair of high-precision pixel modules, which are respectively deployed on the left and right sides of the front of the vehicle. The pixel level can reach tens of thousands or even millions, achieving a high-definition performance of ground projection. The dual-lamp fusion technology ensures the perfect matching of the starting projection edges on both sides through a precise alignment mechanism, thereby clearly defining the overlapping and non-overlapping projection areas. To optimize the visual effect, a brightness weight matrix algorithm is introduced to finely adjust the pixel brightness in the overlapping area, effectively solving the common brightness non-uniformity problem in traditional solutions and ensuring that the dual-lamp projection shows consistent brightness and uniform light and shadow effects as a whole. Thanks to this technological innovation, intelligent vehicles can present a more diverse range of entertainment animations and safety warning information. These dynamic visual elements not only enhance the fun during driving but also improve driving safety. This solution not only meets the driver's demand for novel visual experiences but also demonstrates the great potential of intelligent vehicle lighting technology in enhancing driving safety and fun.

[0003] However, the existing dual-lamp fusion technology still has the following defects:

[0004] (1) During vehicle driving, it often bumps and sways due to uneven roads or small stones. The existing dual-lamp fusion technology relies on the headlight height for calculation. When the vehicle vibration causes the headlight height to change, the patterns of the dual-lamp projection will be misaligned, affecting the projection effect. Therefore, the existing technology is only applicable to static calibration.

[0005] (2) Nowadays, most vehicles are equipped with air suspensions, which can be adjusted according to the driver's needs and road conditions. When the air suspension height changes, it will affect the headlight height and headlight projection angle, and further affect the dual-lamp projection consistency effect. Therefore, the existing technology is applicable to vehicles without air suspensions.

[0006] The above problems need to be solved urgently. Summary of the Invention

[0007] The purpose of the present invention is to overcome at least one technical problem existing in the prior art, and provide a dual-lamp projection adaptive correction method and system based on suspension height adjustment.

[0008] On the one hand, an embodiment of the present invention provides a dual - lamp projection adaptive correction method based on suspension height adjustment. The method is integrated in a headlamp controller, and the method includes: Step S1, collect the height signal of the vehicle suspension, and obtain the real - time height data of the vehicle suspension based on the height signal; Step S2, read the vehicle's own parameters from the body electronic controller, and the vehicle's own parameters include vehicle wheelbase , the distance from the front axle to the headlamp , the distance between the left and right headlamps , the initial height of the headlamp , and one or a combination of headlamp module parameters; Step S3, calculate the real - time height difference between the vehicle's front suspension and rear suspension based on the real - time height data of the vehicle suspension; Step S4, calculate the angle difference between the vehicle's front suspension and rear suspension based on the real - time height difference and the vehicle wheelbase ; Step S5, calculate the downward inclination angle of the headlamp projection after the vehicle body height changes based on the angle difference and the headlamp module parameters; Step S6, correct the headlamp height according to the updated downward inclination angle of the headlamp projection ; Step S7, update the headlamp starting projection distance according to the corrected headlamp height , and calculate the single - lamp projection width ; Step S8, calculate the number of pixel points in the overlapping area of the headlamp projection based on the single - lamp projection width and the distance between the left and right headlamps ; Step S9, calculate the offset pixel points based on the number of pixel points in the overlapping area of the headlamp projection and the headlamp module parameters ; Step S10, control the projection state of the pixel points in the headlamp module based on the offset pixel points to correct the dual - lamp projection effect.

[0009] Further, the headlamp module parameters include one or a combination of the projection horizontal field of view , the module resolution , and the initial downward inclination angle of the projection .

[0010] Further, Step S4, calculating the angle difference between the vehicle's front suspension and rear suspension based on the real - time height difference and the vehicle wheelbase includes:

[0011] ;

[0012] In the formula, Indicates the front suspension height, in m. Indicates the rear suspension height, in m. Indicates the vehicle wheelbase, in m.

[0013] Further, in step S5, based on the angle difference and the headlight module parameters, calculate the downward inclination angle of the headlight projection after the vehicle body height changes including:

[0014] ;

[0015] In the formula, represents the angle difference between the vehicle's front suspension and rear suspension, represents the initial downward inclination angle of the projection.

[0016] Further, in step S6, correct the headlight height according to the updated downward inclination angle of the headlight projection including:

[0017] ;

[0018] In the formula, represents the initial headlight height, in m, represents the front suspension height, in m, represents the initial suspension height, in m, represents the distance from the front axle to the headlight, in m, represents the angle difference between the vehicle's front suspension and rear suspension.

[0019] Further, in step S7, update the headlight starting projection distance according to the corrected headlight height , and calculate the single headlight projection width including:

[0020] ;

[0021] ;

[0022] In the formula, represents the corrected headlight height, in m, represents the downward inclination angle of the headlight projection after the vehicle body height changes, represents the projection horizontal field of view angle.

[0023] Further, in step S8, calculate the number of pixel points in the overlapping area of the headlight projections according to the single headlight projection width and the distance between the left and right headlights including:

[0024] ;

[0025] In the formula, represents the single lamp projection width, with the unit of m, represents the distance between the left and right vehicle lamps, with the unit of m, represents the horizontal resolution of a single vehicle lamp module.

[0026] Furthermore, in step S9, according to the number of pixel points in the overlapping area of the vehicle lamp projection and the vehicle lamp module parameters, the offset pixel point number is calculated including:

[0027] ;

[0028] ;

[0029] In the formula, represents the offset pixel point number of the first row, represents the offset pixel point number of the (x + 1)-th row, represents the horizontal resolution of a single vehicle lamp module, represents the number of pixel points in the overlapping area of the vehicle lamp projection, represents the offset coefficient.

[0030] Furthermore, in step S10, based on the offset pixel point number to control the projection state of the pixel points in the vehicle lamp module, so as to correct the double-lamp projection effect, including: based on the offset pixel point number of each row through the pixel driving circuit to control the projection state of the corresponding row of pixel points in the vehicle lamp module, including: based on the offset pixel point number of each row through the pixel driving circuit to control the projection state of the corresponding row of pixel points in the LED lamp board of the left vehicle lamp; based on the offset pixel point number of each row through the pixel driving circuit to control the projection state of the corresponding row of pixel points in the LED lamp board of the right vehicle lamp.

[0031] Second aspect, an embodiment of the present invention provides a dual - lamp projection adaptive correction system based on suspension height adjustment. The system is implemented by using the above - mentioned dual - lamp projection adaptive correction method based on suspension height adjustment. The system includes a height sensor array, a body electronic controller, a headlight controller, and a headlight module. The height sensor array is respectively installed on the front suspension and the rear suspension of the vehicle, and is suitable for collecting the height signal of the vehicle suspension and sending it to the headlight controller. The headlight controller integrates a CAN communication module, an intelligent calculation module, and a pixel driving module. The CAN communication module is suitable for receiving the height signal of the vehicle suspension and reading the vehicle's own parameters from the body electronic controller. The vehicle's own parameters include the vehicle wheelbase , the distance from the front axle to the headlight , the distance between the left and right headlights , the initial height of the headlight , and one or a combination of the headlight module parameters. The intelligent calculation module is suitable for obtaining the real - time height data of the vehicle suspension based on the height signal; calculating the real - time height difference between the front suspension and the rear suspension of the vehicle based on the real - time height data of the vehicle suspension; calculating the angle difference between the front suspension and the rear suspension of the vehicle based on the real - time height difference and the vehicle wheelbase ; calculating the downward tilt angle of the headlight projection after the body height changes based on the angle difference and the headlight module parameters; correcting the headlight height according to the updated downward tilt angle of the headlight projection ; updating the headlight starting projection distance according to the corrected headlight height and calculating the single - lamp projection width ; calculating the number of pixel points in the overlapping area of the headlight projection based on the single - lamp projection width and the distance between the left and right headlights ; calculating the number of offset pixel points based on the number of pixel points in the overlapping area of the headlight projection and the headlight module parameters ; The pixel driving module is suitable for controlling the projection state of the pixel points in the headlight module based on the number of offset pixel points to correct the dual - lamp projection effect. ; calculating the number of offset pixel points based on the number of pixel points in the overlapping area of the headlight projection and the headlight module parameters; The pixel driving module is suitable for controlling the projection state of the pixel points in the headlight module based on the number of offset pixel points to correct the dual - lamp projection effect. to correct the dual - lamp projection effect.

[0032] Third aspect, an embodiment of the present invention further provides an electronic device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor. When the computer program is executed by the processor, it implements the above - mentioned dual - lamp projection adaptive correction method based on suspension height adjustment.

[0033] Fourthly, an embodiment of the present invention further provides a readable storage medium. When instructions in the storage medium are executed by a processor of an electronic device, the electronic device can execute the above-mentioned dual-lamp projection adaptive correction method based on suspension height adjustment.

[0034] The beneficial effects of the present invention are as follows:

[0035] (1) Improve the consistency of dual-lamp projection: By collecting the height signals of the front and rear suspensions of the vehicle in real time and dynamically calculating and updating the calibration parameters for dual-lamp fusion, the present invention ensures that under different suspension height conditions, the dual-lamp projection can maintain a consistent light and shadow effect. This technological breakthrough solves the problem of inconsistent projection caused by changes in the headlamp height and projection angle in the existing dual-lamp fusion technology, and improves the stability and reliability of the intelligent vehicle lighting system.

[0036] (2) Enhance driving safety: The consistency of dual-lamp projection is crucial for driving safety. In the night or low-light environment, clear and consistent headlamp projection can more effectively alert other road users and reduce the risk of traffic accidents. The real-time dual-lamp projection technology of the present invention enhances the visibility and safety during driving by maintaining the projection consistency, providing a more reassuring travel experience for drivers and passengers.

[0037] (3) Broaden the scope of application: The existing dual-lamp fusion technology is mainly applicable to static calibration and has applicability limitations for models with air suspensions. However, the real-time dual-lamp projection technology of the present invention realizes wide applicability to models with different suspension heights by dynamically adjusting the calibration parameters. This technological breakthrough broadens the application scope of the dual-lamp fusion technology, enabling more models to enjoy the lighting effect and improved driving safety brought by the dual-lamp fusion technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will be further described below with reference to the drawings and embodiments.

[0039] Figure 1 is a flowchart of a dual-lamp projection adaptive correction method based on suspension height adjustment provided by Embodiment 1 of the present invention.

[0040] Figure 2a is a schematic diagram of unprocessed dual-lamp projection in the background art of the present invention.

[0041] Figure 2b is a schematic diagram of dual-lamp fusion projection processed based on the dual-lamp fusion technology in the background art of the present invention.

[0042] Figure 2c is a schematic diagram of the actual projection usage area in the background art of the present invention.

[0043] Figure 3It is a schematic diagram of the vehicle's own parameter markings in the front view and top view of the vehicle provided by Embodiment 1 of the present invention.

[0044] Figure 4 It is a schematic diagram of the headlight projection parameter markings provided by Embodiment 1 of the present invention.

[0045] Figure 5 It is a schematic diagram of the vehicle suspension height markings provided by Embodiment 1 of the present invention.

[0046] Figure 6a It is a schematic diagram of the headlight projection during vehicle driving only based on the dual - light fusion technology provided by Embodiment 1 of the present invention.

[0047] Figure 6b It is the effect diagram after correcting the headlight projection by the dual - light projection adaptive correction method based on the suspension height adjustment provided by Embodiment 1 of the present invention.

[0048] Figure 7 It is a schematic diagram of the structure of a dual - light projection adaptive correction system based on the suspension height adjustment provided by Embodiment 2 of the present invention.

[0049] Figure 8 It is a partial block diagram of the electronic device provided by Embodiment 3 of the present invention. Detailed implementation manners

[0050] Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts depict the operations as sequential processes, many of the operations can be implemented in parallel, concurrently, or simultaneously. In addition, the order of the operations can be rearranged. The process can be terminated when its operations are completed, but it can also have additional steps not included in the drawings. The process can correspond to a method, function, procedure, subroutine, sub - program, etc.

[0051] It should be understood that although terms such as "first", "second", etc. may be used here to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, without departing from the scope of the exemplary embodiments, the first unit can be called the second unit, and similarly the second unit can be called the first unit. The term "and / or" used here includes any and all combinations of one or more of the listed associated items.

[0052] Now, the present invention will be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the present invention in a schematic way, so it only shows the components related to the present invention.

[0053] Embodiment 1

[0054] For ease of understanding, the inventive concept is described as a whole before the detailed description of the embodiments of the present invention:

[0055] The present application provides a dual - lamp projection adaptive correction method based on suspension height adjustment. To solve the problem that in a traditional vehicle headlamp projection system, when the vehicle body attitude changes (such as suspension height adjustment, load change, or road surface bump), due to the change of the headlamp height and projection angle, the overlapping area of the left and right lamp projections shifts, showing a phenomenon of projection pattern ghosting. Most of the existing technologies adopt fixed offset parameters or simple linear compensation, which cannot accurately adapt to dynamic vehicle body attitude changes. The present invention proposes a real - time calculation model based on the suspension height signal, and by dynamically adjusting the projection offset amount, the consistency of the dual - lamp fusion area is ensured. Specifically, this method dynamically adjusts the parameters on the basis of dual - lamp fusion to achieve an optimized effect. Therefore, the technical principle of dual - lamp fusion is introduced first: First, the starting projection distances of the dual lamps are aligned manually. As Figure 2a shown in the schematic diagram of the unprocessed dual - lamp projection, the brightness of the middle overlapping area of the unprocessed dual - lamp projection is higher than that of the single - lamp projection part. By introducing a brightness weight matrix to correct the overlapping areas of the left and right lamps respectively, the brightness uniformity after the dual - lamp overlap can be ensured. As Figure 2b shown, it is the schematic diagram of the processed dual - lamp fusion projection. To meet the scene requirements and function definitions, the projection area is cropped. As Figure 2c shown in the schematic diagram of the actual projection usage area, take Figure 2c the middle trapezoidal area as the projection usage area. When the vehicle body height and angle change, the dual - lamp fusion projection will produce ghosting or misalignment phenomena. Therefore, measures need to be taken to dynamically adjust this problem. That is to say, the dual - lamp projection adaptive correction method based on suspension height adjustment described in this embodiment is an improvement based on the already performed dual - lamp fusion. It should be noted that the dual - lamp fusion technology is not limited in the following embodiments.

[0056] The specific implementation manners are as follows:

[0057] As Figure 1 shown, it is the flowchart of a dual - lamp projection adaptive correction method based on suspension height adjustment provided by the present invention.

[0058] As an example, the method is integrated into the headlamp controller, and the method includes:

[0059] Step S1, collect the height signal of the vehicle suspension, and obtain the real - time height data of the vehicle suspension based on the height signal.

[0060] Combined with Figure 5As shown, in some feasible embodiments, high-precision height sensor arrays are installed on both the front suspension and the rear suspension of the vehicle. Through this height sensor array, the real-time height of the front suspension of the vehicle can be collected in real time and the real-time height of the rear suspension of the vehicle as well as the initial height of the vehicle suspension .

[0061] Step S2: Read the vehicle's own parameters from the body electronic controller. The vehicle's own parameters include the wheelbase of the vehicle , the distance from the front axle to the headlight , the distance between the left and right headlights , the initial height of the headlight and one or a combination of the headlight module parameters

[0062] Combined Figure 3 As shown, in some feasible embodiments, the vehicle's own parameters can be pre-stored in the body electronic controller when the vehicle leaves the factory, or the vehicle's own parameters can be read through the subsequent active input of the user. Preferably, the headlight module parameters include the projection horizontal field of view , the module resolution and the initial projection downward inclination and one or a combination thereof. Among them, the projection horizontal FOV (FOV (Field of View) represents the field of view, which specifically refers to the maximum viewing angle that the projection device can cover in the horizontal direction. The size of this angle directly determines the width of the projection screen and the image range that the audience can receive within a certain distance. The A in the module resolution represents the number of horizontal pixels of the module, and B represents the number of vertical pixels. The initial projection downward inclination represents the angle between the headlight beam and the horizontal plane

[0063] Step S3: Calculate the real-time height difference between the front suspension and the rear suspension of the vehicle based on the real-time height data of the vehicle suspension

[0064] Step S4: Calculate the angle difference between the front suspension and the rear suspension of the vehicle based on the real-time height difference and the wheelbase of the vehicle .

[0065] Combined Figure 3 and Figure 5 As shown, in some feasible embodiments, in step S4, the angle difference between the front suspension and the rear suspension of the vehicle is calculated based on the real-time height difference and the wheelbase of the vehicle includes

[0066] ;​​

[0067] In the formula, represents the front suspension height, with the unit of m, represents the rear suspension height, with the unit of m, represents the wheelbase of the vehicle, with the unit of m.

[0068] Step S5: Based on the angle difference and the headlight module parameters, calculate the downward inclination angle of the headlight projection after the vehicle body height changes .

[0069] In some feasible embodiments, the step S5: Based on the angle difference and the headlight module parameters, calculate the downward inclination angle of the headlight projection after the vehicle body height changes includes:

[0070] ;

[0071] In the formula, represents the angle difference between the front suspension and the rear suspension of the vehicle, represents the initial downward inclination angle of the projection. That is, when the height of the vehicle changes, the height of the headlight from the ground also changes relatively, and the downward inclination angle of its headlight projection also changes, from the initial downward inclination angle becomes .

[0072] Step S6: Correct the headlight height according to the updated downward inclination angle of the headlight projection .

[0073] Combined with Figure 3 and Figure 5 shown, in some feasible embodiments, the step S6: Correct the headlight height according to the updated downward inclination angle of the headlight projection includes:

[0074] ;

[0075] In the formula, represents the initial headlight height, with the unit of m, represents the front suspension height, with the unit of m, represents the initial suspension height, with the unit of m, represents the distance from the front axle to the headlight, with the unit of m, represents the angle difference between the front suspension and the rear suspension of the vehicle.

[0076] Step S7: Update the headlight start projection distance according to the corrected headlight height , and calculate the single headlight projection width .

[0077] Combined with Figure 4 As shown, in some feasible real-time modes, the step S7, according to the corrected headlight height Update the starting projection distance of the headlight , and calculate the single-light projection width Includes:

[0078] ;

[0079] ;

[0080] In the formula, represents the corrected headlight height, with the unit of m, represents the downward inclination angle of the headlight projection after the body height changes, represents the projection horizontal field angle.

[0081] Step S8, according to the single-light projection width and the distance between the left and right headlights Calculate the number of pixel points in the overlapping area of the headlight projection .

[0082] Combined with Figure 4 As shown, in some feasible implementation modes, the step S8, according to the single-light projection width and the distance between the left and right headlights Calculate the number of pixel points in the overlapping area of the headlight projection Includes:

[0083] ;

[0084] In the formula, represents the single-light projection width, with the unit of m, represents the distance between the left and right headlights, with the unit of m, represents the horizontal resolution of a single headlight module.

[0085] Step S9, according to the number of pixel points in the overlapping area of the headlight projection and the headlight module parameters, calculate the offset pixel points .

[0086] Combined with Figure 4 As shown, in some feasible implementation modes, the step S9, according to the number of pixel points in the overlapping area of the headlight projection and the headlight module parameters, calculate the offset pixel points Includes:

[0087] ;

[0088] ;

[0089] In the formula, represents the number of offset pixels in the first row, represents the number of offset pixels in the (x + 1)-th row, represents the horizontal resolution of a single headlight module, represents the number of pixels in the overlapping area of the headlight projection, represents the offset coefficient. That is, the number of offset pixels in each middle row can be calculated based on the number of offset pixels in the first row where is the offset coefficient, which will be slightly adjusted according to the headlight angle during actual use, but the change range is very small and can be ignored.

[0090] Step S10: Based on the number of offset pixels control the projection state of the pixels in the headlight module to correct the double-headlight projection effect.

[0091] In some feasible embodiments, step S10: Based on the number of offset pixels control the projection state of the pixels in the headlight module to correct the double-headlight projection effect, including:

[0092] Based on the number of offset pixels in each row control the projection state of the corresponding pixels in the headlight module in that row through the pixel driving circuit, including: Based on the number of offset pixels in each row control the projection state of the corresponding pixels in the LED light board of the left headlight of the vehicle through the pixel driving circuit; Based on the number of offset pixels in each row control the projection state of the corresponding pixels in the LED light board of the right headlight of the vehicle through the pixel driving circuit. Specifically, if the obtained is 10, the pixel driving circuit controls the first row of lamp beads in the LED light board of the left headlight of the vehicle to start lighting from the 10th one from left to right, and the first to ninth lamp beads are all in the off state; the pixel driving circuit controls the first row of lamp beads in the LED light board of the right headlight of the vehicle to start lighting from the 10th one from right to left, and the first to ninth lamp beads are all in the off state. If the obtained is 8, the pixel driving circuit controls the second row of lamp beads in the LED light board of the left headlight of the vehicle to start lighting from the 8th one from left to right, and the first to seventh lamp beads are all in the off state; the pixel driving circuit controls the second row of lamp beads in the LED light board of the right headlight of the vehicle to start lighting from the 8th one from right to left, and the first to seventh lamp beads are all in the off state, and so on, so that the projection image is corrected from Figure 6a to Figure 6b as shown.

[0093] In the above embodiments, a dynamic compensation mechanism is proposed: the height and angle of the vehicle lights are calculated in real time through suspension signals to solve the hysteresis problem of the traditional fixed-parameter model; dual-light fusion optimization: the overlapping area is accurately calculated based on the projection geometric relationship to achieve pixel-level offset adjustment; parameter coupling modeling: multiple parameters such as suspension height, vehicle light position, and FOV are integrated to improve the robustness of the model.

[0094] Embodiment 2

[0095] Please refer to Figure 7 , this embodiment provides a schematic structural diagram of a dual-light projection adaptive correction system based on suspension height adjustment.

[0096] As an example, the system is implemented by using the dual-light projection adaptive correction method based on suspension height adjustment described in Embodiment 1. The system includes a height sensor array 1, a vehicle body electronic controller 2, a vehicle light controller 3, and a vehicle light module 4.

[0097] The height sensor array 1 is respectively installed on the front suspension and the rear suspension of the vehicle, and is suitable for collecting the height signals of the vehicle suspension and sending them to the vehicle light controller 3.

[0098] The vehicle light controller 3 is integrated with a CAN communication module 300, an intelligent calculation module 310, and a pixel driving module 320; the CAN communication module 300 is suitable for receiving the height signals of the vehicle suspension and reading the vehicle's own parameters from the vehicle body electronic controller 2. The vehicle's own parameters include the vehicle wheelbase , the distance from the front axle to the vehicle lights , the distance between the left and right vehicle lights , the initial height of the vehicle lights , and one or a combination of the vehicle light module parameters; the intelligent calculation module 310 is suitable for obtaining the real-time height data of the vehicle suspension based on the height signals; calculating the real-time height difference between the front suspension and the rear suspension of the vehicle based on the real-time height data of the vehicle suspension; calculating the angle difference between the front suspension and the rear suspension of the vehicle based on the real-time height difference and the vehicle wheelbase ; calculating the downward inclination angle of the vehicle light projection after the vehicle body height changes based on the angle difference ; correcting the vehicle light height according to the updated downward inclination angle of the vehicle light projection ; updating the starting projection distance of the vehicle lights according to the corrected vehicle light height ; calculating the single-light projection width ; calculating the number of pixel points in the overlapping area of the vehicle light projection according to the single-light projection width and the distance between the left and right vehicle lights ; ; and the distance between the left and right vehicle lights ​ ; Based on the number of pixel points in the overlapping area of the headlight projection and the headlight module parameters, the offset pixel points are calculated ; The pixel driving module 320 is applicable to control the projection state of the pixel points in the headlight module 4 based on the number of offset pixel points to correct the double-headlight projection effect.

[0099] It is not difficult to find that this embodiment is a system embodiment corresponding to the first embodiment, and this embodiment can be implemented in cooperation with the first embodiment. The relevant technical details mentioned in the first embodiment are still valid in this embodiment. To avoid repetition, they will not be elaborated here. Correspondingly, the relevant technical details mentioned in this embodiment can also be applied in the first embodiment.

[0100] It is worth mentioning that each module involved in this embodiment is a logical unit. In practical applications, a logical unit can be a physical unit, a part of a physical unit, or a combination of multiple physical units. In addition, to highlight the innovative part of the present invention, units not closely related to solving the technical problems proposed by the present invention are not introduced in this embodiment, but this does not mean that there are no other units in this embodiment.

[0101] Embodiment 3

[0102] Please refer to Figure 8 , The embodiment of the present invention also provides an electronic device, including: a memory and a processor; at least one program instruction is stored in the memory; the processor loads and executes the at least one program instruction to implement the dual-headlight projection adaptive correction method based on suspension height adjustment provided in Embodiment 1.

[0103] The memory 702 and the processor 701 are connected in a bus manner. The bus can include any number of interconnected buses and bridges, and the bus connects various circuits of one or more processors 701 and the memory 702 together. The bus can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art, so they will not be further described herein. The bus interface provides an interface between the bus and the transceiver. The transceiver can be an element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on the transmission medium. The data processed by the processor 701 is transmitted on the wireless medium through the antenna. Further, the antenna also receives data and transmits the data to the processor 701.

[0104] The processor 701 is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The memory 702 can be used to store the data used by the processor 701 when executing operations.

[0105] Embodiment 4

[0106] An embodiment of the present invention also provides a storage medium, on which a dual-lamp projection adaptive correction method based on suspension height adjustment is stored. When the dual-lamp projection adaptive correction program based on suspension height adjustment is executed by a processor, the steps of the dual-lamp projection adaptive correction method based on suspension height adjustment as described above are implemented. Since this storage medium adopts all the technical solutions of the above-mentioned all embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0107] The above are only the embodiments of the present invention. Common knowledge such as specific structures and characteristics in the solutions is not described in detail here. Those of ordinary skill in the art know all the common technical knowledge in the technical field to which the invention belongs before the filing date or the priority date, can know all the existing technologies in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given in this application and combined with their own abilities, improve and implement this solution. Some typical well-known structures or well-known methods should not become an obstacle for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A dual-lamp projection adaptive correction method based on suspension height adjustment, which is integrated in a vehicle lamp controller, and is characterized in that, The method includes: Step S1, collecting height signals of the vehicle suspension, and obtaining real-time height data of the vehicle suspension based on the height signals; Step S2: Read the vehicle's own parameters from the body electronic controller, where the vehicle's own parameters include the vehicle wheelbase , the distance from the front axle to the headlight , the distance between the left and right headlights , the initial height of the headlight and one or a combination of the headlight module parameters; Step S3, calculating a real-time height difference between the front suspension and the rear suspension of the vehicle based on the real-time height data of the vehicle suspension; Step S4. Based on the real-time height difference and the wheelbase of the vehicle calculate the angle difference between the front suspension and the rear suspension of the vehicle ; wherein, the angle difference between the front suspension and the rear suspension of the vehicle includes: ； In the formula, represents the front suspension height, with the unit of m, represents the rear suspension height, with the unit of m, represents the vehicle wheelbase, with the unit of m; Step S5. Based on the angle difference and the parameters of the headlight module, calculate the downward inclination angle of the headlight projection after the vehicle body height changes ; Step S6. Correct the headlight height according to the updated downward inclination angle of the headlight projection ; Step S7: Update the starting projection distance of the vehicle lamp according to the corrected vehicle lamp height and calculate the projection width of a single lamp ; ​ Step S8. Calculate the number of pixel points in the overlapping area of the headlight projections based on the single headlight projection width and the distance between the left and right headlights ; ​ Step S9: Calculate the offset pixel count based on the number of pixel points in the overlapping area of the headlight projection and the headlight module parameters ; Step S10: Based on the number of offset pixels Control the projection state of the pixels in the headlight module to correct the double-light projection effect.

2. The dual-lamp projection adaptive correction method based on suspension height adjustment according to claim 1, wherein The parameters of the headlight module include the projection horizontal field of view , the module resolution and the initial projection downward inclination angle or a combination thereof.

3. The dual-lamp projection adaptive correction method based on suspension height adjustment according to claim 1, wherein Step S5, based on the angular difference and the headlight module parameters, calculate the downward inclination angle of the headlight projection after the vehicle body height changes including: ； In the formula, represents the angular difference between the front suspension and the rear suspension of the vehicle, represents the initial projection downward inclination angle.

4. The dual-lamp projection adaptive correction method based on suspension height adjustment according to claim 3, characterized in that Step S6: Correct the headlamp height according to the updated downward inclination angle of the headlamp projection including: ； In the formula, represents the initial height of the headlight, in m, represents the height of the front suspension, in m, represents the initial height of the suspension, in m, represents the distance from the front axle to the headlight, in m, represents the angular difference between the front suspension and the rear suspension of the vehicle.

5. The dual-lamp projection adaptive correction method based on suspension height adjustment according to claim 4, wherein, Step S7: Update the starting projection distance of the vehicle lamp according to the corrected vehicle lamp height and calculate the projection width of a single lamp , including: ​ ； ； In the formula, represents the corrected headlight height, in m, represents the downward inclination angle of the headlight projection after the body height changes, represents the projection horizontal field of view angle.

6. The dual-lamp projection adaptive correction method based on suspension height adjustment according to claim 5, wherein Step S8: Calculate the number of pixel points in the overlapping area of the headlight projections based on the single-headlight projection width and the distance between the left and right headlights including: ​ ； In the formula, represents the single lamp projection width, with the unit of m, represents the distance between the left and right vehicle lamps, with the unit of m, represents the horizontal resolution of a single lamp module.

7. The dual-lamp projection adaptive correction method based on suspension height adjustment according to claim 6, wherein Step S9, calculating the offset pixel count based on the number of pixel points in the headlight projection overlapping area and the headlight module parameters comprises: ； ； In the formula, represents the number of offset pixel points in the first row, represents the number of offset pixel points in the (x + 1)-th row, represents the horizontal resolution of a single headlight module, represents the number of pixel points in the overlapping area of the headlight projection, represents the offset coefficient.

8. The dual-lamp projection adaptive correction method based on suspension height adjustment according to claim 7, wherein The step S10, based on the number of offset pixels controls the projection state of pixels in the headlight module, so that the correction of the double-light projection effect includes: Offset pixel count per line Controlling the projection state of the corresponding pixels in that line of the headlight module through the pixel driving circuit, including: Number of offset pixels per line Control the projection state of the corresponding pixels in the LED light board of the vehicle's left light through the pixel driving circuit; Number of offset pixels per line The projection state of the corresponding pixels in the LED light board of the vehicle's right light is controlled by the pixel driving circuit for each line.

9. A dual-lamp projection adaptive correction system based on suspension height adjustment, the system is implemented by using the method for dual-lamp projection adaptive correction based on suspension height adjustment according to any one of claims 1-8, characterized in that, The system includes a height sensor array, a body electronic controller, a headlight controller, and a headlight module; The height sensor array is respectively installed on the front suspension and the rear suspension of the vehicle, and is adapted to collect height signals of the vehicle suspension and send them to the headlight controller; The headlight controller integrates a CAN communication module, an intelligent calculation module, and a pixel driving module; The CAN communication module is applicable to receiving the height signal of the vehicle suspension and reading the vehicle's own parameters from the body electronic controller, and the vehicle's own parameters include the vehicle wheelbase , the distance from the front axle to the headlight , the distance between the left and right headlights , the initial height of the headlight and one or a combination of the headlight module parameters; The intelligent computing module is applicable to obtaining real-time height data of the vehicle suspension based on the height signal; calculating the real-time height difference between the front suspension and the rear suspension of the vehicle based on the real-time height data of the vehicle suspension; based on the real-time height difference and the wheelbase of the vehicle calculating the angle difference between the front suspension and the rear suspension of the vehicle ; based on the angle difference and the headlight module parameters, calculating the downward inclination angle of the headlight projection after the vehicle body height changes ; correcting the headlight height according to the updated downward inclination angle of the headlight projection ; according to the corrected headlight height updating the headlight starting projection distance , and calculating the single headlight projection width ; according to the single headlight projection width and the distance between the left and right headlights calculating the number of pixel points in the overlapping area of the headlight projection ; according to the number of pixel points in the overlapping area of the headlight projection and the headlight module parameters, calculating the offset pixel points ; wherein, the angle difference between the front suspension and the rear suspension of the vehicle includes: ； In the formula, represents the front suspension height, with the unit of m, represents the rear suspension height, with the unit of m, represents the vehicle wheelbase, with the unit of m; the pixel driving module is applicable to controlling the projection state of the pixel points in the headlight module based on the number of offset pixel points to correct the double-light projection effect.

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