Double-lamp projection self-adaptive correction method and system based on suspension height adjustment

Abstract

The invention provides a double-lamp projection self-adaptive correction method and system based on suspension height adjustment, and belongs to the technical field of intelligent automobile illumination control. Comprising the steps that the real-time height difference between a front suspension and a rear suspension of a vehicle is calculated; calculating the angle difference of the vehicle suspension based on the real-time height difference and the vehicle wheelbase; calculating a vehicle lamp projection downward inclination angle after the vehicle body height is changed based on the angle difference and the vehicle lamp module parameters; correcting the vehicle lamp height according to the updated vehicle lamp projection downward inclination angle; according to the corrected height of the vehicle lamp, updating the initial projection distance of the vehicle lamp, and calculating the projection width of a single lamp; according to the single lamp projection width and the distance between the left and right vehicle lamps, calculating the number of pixel points in a vehicle lamp projection overlapping area; calculating the number of offset pixel points according to the number of pixel points in the vehicle lamp projection overlapping area and the vehicle lamp module parameters; and controlling the projection state of the pixel points in the vehicle lamp module based on the offset pixel point number. And under the condition of different suspension heights, the projection of the double lamps can keep consistent light and shadow effects.

Description

Technical Field

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

[0002] In the intelligent automobile lighting technology, the dual-lamp fusion solution uses a pair of high-precision pixel modules, which are deployed on the left and right sides of the front of the vehicle, respectively. The pixel level can reach tens of thousands or even millions, achieving high-definition performance of ground projection. The dual-lamp fusion technology uses a precise alignment mechanism to ensure that the starting and ending lines of the projections on both sides are perfectly matched, and then clearly define the overlapping and non-overlapping projection areas. In order to optimize the visual effect, the brightness weight matrix algorithm is introduced to fine-tune the pixel brightness in the overlapping area, which effectively solves the common brightness unevenness problem in traditional solutions and ensures that the dual-lamp projection shows consistent brightness and uniform light and shadow effects as a whole. Thanks to this technological innovation, intelligent cars can present more diverse entertainment animations and safety warning information. These dynamic visual elements not only enhance the fun of driving, but also enhance driving safety. This solution not only meets the driver's demand for novel visual experience, but also demonstrates the great potential of intelligent automobile lighting technology in improving driving safety and fun.

[0003] However, the existing dual-lamp fusion technology still has the following defects: (1) When driving, vehicles often experience bumps and jolts due to uneven roads or small stones. The existing dual-lamp fusion technology relies on the height of the headlights for calculation. When the height of the headlights changes due to vehicle vibration, the pattern projected by the dual lights will be misaligned, affecting the projection effect. Therefore, the existing technology is only suitable for static calibration.

[0004] (2) Most vehicles today are equipped with air suspension, which can be adjusted according to the driver's needs and road conditions. When the height of the air suspension changes, it will affect the height and projection angle of the headlights, thereby affecting the consistency of the dual-headlight projection effect. Therefore, the existing technology is suitable for vehicles without air suspension.

[0005] The above problems need to be solved urgently. Summary of the invention

[0006] The purpose of the present invention is to overcome at least one technical problem existing in the prior art, and to provide a dual-lamp projection adaptive correction method and system based on suspension height adjustment.

[0007] 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 vehicle lamp controller and includes: Step S1, collecting the height signal of the vehicle suspension and obtaining the real-time height data of the vehicle suspension based on the height signal; Step S2, reading 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 vehicle lamp , the distance between the left and right vehicle lamps , the initial height of the vehicle lamp and one or a combination of the vehicle lamp module parameters; Step S3, 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; Step S4, 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 ; Step S5, calculating the downward inclination angle of the vehicle lamp projection after the body height change based on the angle difference and the vehicle lamp module parameters; Step S6, correcting the vehicle lamp height according to the updated downward inclination angle of the vehicle lamp projection ; Step S7, updating the starting projection distance of the vehicle lamp according to the corrected vehicle lamp height , and calculating the single-lamp projection width ; Step S8, calculating the number of pixel points in the overlapping area of the vehicle lamp projection according to the single-lamp projection width and the distance between the left and right vehicle lamps ; Step S9, calculating the offset pixel points according to the number of pixel points in the overlapping area of the vehicle lamp projection and the vehicle lamp module parameters; Step S10, controlling the projection state of the pixel points in the vehicle lamp module based on the offset pixel points to correct the dual-lamp projection effect.

[0008]

[0009] Further, the vehicle lamp 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 .

[0009] Further, Step S4, 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 includes: ; ; In the formula, represents the height of the front suspension, with the unit of m, Indicates the rear suspension height, in m. Indicates the wheelbase of the vehicle, in m.

[0010] Furthermore, 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: ; 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.

[0011] Furthermore, in step S6, correct the headlight height according to the updated downward inclination angle of the headlight projection including: ; 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 front suspension and the rear suspension of the vehicle.

[0012] Furthermore, in step S7, update the headlight starting projection distance according to the corrected headlight height , and calculate the single headlight projection width including: ; ; 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.

[0013] Furthermore, in step S8, calculate the number of pixel points in the overlapping area of the headlight projection according to the single headlight projection width and the distance between the left and right headlights including: ; In the formula, represents the single headlight projection width, in m, represents the distance between the left and right headlights, in m, represents the horizontal resolution of a single headlight module.

[0014] Further, in step S9, according to the number of pixel points in the overlapping area of the headlight projection and the headlight module parameters, the offset pixel point number is calculated including: ; ; wherein, represents the number of offset pixel points in the first row, represents the number of offset pixel points in the x-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.

[0015] Further, in step S10, based on the number of offset pixel points the projection state of the pixel points in the headlight module is controlled to correct the dual-headlight projection effect, including: based on the number of offset pixel points in each row the projection state of the corresponding pixel points in the headlight module in that row is controlled through the pixel driving circuit, including: based on the number of offset pixel points in each row the projection state of the corresponding pixel points in the LED light board of the left headlight of the vehicle is controlled through the pixel driving circuit; based on the number of offset pixel points in each row the projection state of the corresponding pixel points in the LED light board of the right headlight of the vehicle is controlled through the pixel driving circuit.

[0016] In a second aspect, an embodiment of the present invention provides a dual-headlight projection adaptive correction system based on suspension height adjustment. The system is implemented by using the above-mentioned dual-headlight 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 , and the initial height of the headlight and one or a combination of the parameters of the headlight module; the intelligent computing module is adapted to obtain the real-time height data of the vehicle suspension based on the height signal; 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; 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 ; 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 ; correct the headlight height according to the updated downward inclination angle of the headlight projection ; according to the corrected headlight height update the headlight starting projection distance , and calculate the single headlight projection width ; according to the single headlight 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 ; according to the number of pixel points in the overlapping area of the headlight projection and the parameters of the headlight module, calculate the offset pixel points ; the pixel driving module is adapted to control the projection state of the pixel points in the headlight module based on the number of offset pixel points to correct the double headlight projection effect.

[0017] In a 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, where when the computer program is executed by the processor, the above-mentioned dual-headlight projection adaptive correction method based on suspension height adjustment is implemented.

[0018] In a fourth aspect, an embodiment of the present invention further provides a readable storage medium, where when the instructions in the storage medium are executed by the processor of the electronic device, the electronic device can execute the above-mentioned dual-headlight projection adaptive correction method based on suspension height adjustment.

[0019] The beneficial effects of the present invention are: (1) Improve the consistency of dual-headlight projection: By real-time collecting the height signals of the front and rear suspensions of the vehicle and dynamically calculating and updating the calibration parameters of dual-headlight fusion, the present invention ensures that under different suspension height conditions, the dual-headlight projection can maintain a consistent light and shadow effect. This technical breakthrough solves the problem of inconsistent projection caused by changes in headlight height and projection angle in the existing dual-headlight fusion technology, and improves the stability and reliability of the intelligent vehicle lighting system.

[0020] (2) Enhance driving safety: The consistency of dual - lamp projection is crucial for driving safety. In night or dimly - lit environments, clear and consistent headlamp projections can more effectively alert other road users, reducing the risk of traffic accidents. The real - time dual - lamp projection technology of the present invention enhances visibility and safety during driving by maintaining projection consistency, providing a more reassuring travel experience for drivers and passengers.

[0021] (3) Broaden the scope of application: Existing dual - lamp fusion technologies are mainly applicable to static calibration and have limitations in applicability for vehicles with air suspensions. However, the real - time dual - lamp projection technology of the present invention achieves wide applicability for vehicles with different suspension heights by dynamically adjusting calibration parameters. This technological breakthrough broadens the application scope of dual - lamp fusion technology, enabling more vehicle models to enjoy the improved lighting effects and driving safety brought by dual - lamp fusion technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the drawings and embodiments.

[0023] Figure 1 It is a flowchart of an adaptive correction method for dual - lamp projection based on suspension height adjustment provided in Embodiment 1 of the present invention.

[0024] Figure 2a It is a schematic diagram of unprocessed dual - lamp projection in the background art of the present invention.

[0025] Figure 2b It is a schematic diagram of dual - lamp fusion projection processed based on dual - lamp fusion technology in the background art of the present invention.

[0026] Figure 2c It is a schematic diagram of the actual projection usage area in the background art of the present invention.

[0027] Figure 3 It is a schematic diagram of marking vehicle own parameters from the front - view and top - view perspectives of a vehicle provided in Embodiment 1 of the present invention.

[0028] Figure 4 It is a schematic diagram of marking headlamp projection parameters provided in Embodiment 1 of the present invention.

[0029] Figure 5 It is a schematic diagram of marking the vehicle suspension height provided in Embodiment 1 of the present invention.

[0030] Figure 6a It is a schematic diagram of headlamp projection during vehicle driving based only on dual - lamp fusion technology provided in Embodiment 1 of the present invention.

[0031] Figure 6bThis is the effect diagram after correcting the headlight projection by a dual - lamp projection adaptive correction method based on suspension height adjustment provided in Embodiment 1 of the present invention.

[0032] Figure 7 This is the schematic structural diagram of a dual - lamp projection adaptive correction system based on suspension height adjustment provided in Embodiment 2 of the present invention.

[0033] Figure 8 This is a partial block diagram of an electronic device provided in Embodiment 3 of the present invention. Detailed implementation manners

[0034] 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 describe 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, sub - routine, sub - program, etc.

[0035] 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 related items.

[0036] 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 manner, so it only shows the components related to the present invention.

[0037] Embodiment 1 For the convenience of understanding, the inventive concept will be described as a whole before describing the embodiments of the present invention in detail: This application provides a dual - lamp projection adaptive correction method based on suspension height adjustment. To solve the problem that in the traditional vehicle headlamp projection system, when the body attitude changes (such as suspension height adjustment, load change, or road bump), due to the change of headlamp height and projection angle, the overlapping area of the left and right lamp projections shifts, showing the phenomenon of projection pattern ghosting. Most of the existing technologies use fixed offset parameters or simple linear compensation, which cannot accurately adapt to dynamic body attitude changes. The present invention proposes a real - time calculation model based on the suspension height signal, which ensures the consistency of the dual - lamp fusion area by dynamically adjusting the projection offset. 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 first introduced: First, manually calibrate and align the starting projection distances of the dual lamps. For example, Figure 2a The figure shows a 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 uniformity of the brightness after the dual - lamp overlap can be ensured. For example, Figure 2b The figure shows a schematic diagram of the processed dual - lamp fusion projection. To meet the scene requirements and functional definitions, the projection area is cropped. For example, Figure 2c The figure shows a schematic diagram of the actual projection usage area. Take the middle trapezoidal area of Figure 2c as the projection usage area. When the 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, 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.

[0038] The specific implementation is as follows: As shown in Figure 1 the figure, it is a flowchart of a dual - lamp projection adaptive correction method based on suspension height adjustment provided by the present invention.

[0039] As an example, the method is integrated into the headlamp controller. 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.

[0040] Combined with Figure 5 shown in the figure, 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 vehicle front suspension and the real - time height of the vehicle rear suspension as well as the initial height of the vehicle suspension can be collected in real - time.

[0041] 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 / or a combination of one or more of the headlight module parameters.

[0042] Combined with Figure 3 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 / or a combination of one or more of the initial projection downward inclination angles . 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. In the module resolution , A represents the number of horizontal pixels of the module, and B represents the number of vertical pixels. The initial projection downward inclination angle represents the angle between the headlight beam and the horizontal plane.

[0043] 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.

[0044] 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 . .

[0045] Combined with Figure 3 and Figure 5 shown, in some feasible embodiments, the 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: ; ; In the formula, represents the height of the front suspension, in m, represents the height of the rear suspension, in m, represents the vehicle wheelbase, in m.

[0046] Step S5: Based on the angle difference The downward inclination angle of the headlight projection after the vehicle body height changes is calculated based on the angle difference and the headlight module parameters .

[0047] In some feasible embodiments, step S5, 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 includes: ; 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 .

[0048] Step S6, correcting the headlight height according to the updated downward inclination angle of the headlight projection .

[0049] Combined with Figure 3 and Figure 5 shown, in some feasible embodiments, the step S6, correcting the headlight height according to the updated downward inclination angle of the headlight projection includes: ; 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 front suspension and the rear suspension of the vehicle.

[0050] Step S7, updating the headlight starting projection distance according to the corrected headlight height , and calculating the single headlight projection width .

[0051] Combined with Figure 4 shown, in some feasible real-time modes, the step S7, updating the headlight starting projection distance according to the corrected headlight height , and calculating the single headlight projection width includes: ; ; In the formula, Indicates the corrected headlight height, in m, Indicates the downward inclination angle of the headlight projection after the vehicle body height changes, Indicates the projection horizontal field of view angle.

[0052] Step S8: According to the single headlight 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 .

[0053] Combined with Figure 4 shown, in some feasible embodiments, the step S8: According to the single headlight 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: ; In the formula, Indicates the single headlight projection width, in m, Indicates the distance between the left and right headlights, in m, Indicates the horizontal resolution of a single headlight module.

[0054] 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 .

[0055] Combined with Figure 4 shown, in some feasible embodiments, 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: ; ; In the formula, Indicates the number of offset pixel points in the first row, Indicates the number of offset pixel points in the x-th row, Indicates the horizontal resolution of a single headlight module, Indicates the number of pixel points in the overlapping area of the headlight projection, Indicates the offset coefficient. That is, the number of offset pixel points in each middle row can be calculated according to the number of offset pixel points in the first row , where is the offset coefficient, which will be fine-tuned according to the headlight angle during actual use, but the change range is very small and can be ignored.

[0056] 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.

[0057] In some feasible embodiments, the 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, including: Based on the number of offset pixels in each row Control the projection state of the corresponding row of pixels in the headlight module through the pixel driving circuit, including: Based on the number of offset pixels in each row Control the projection state of the corresponding row of 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 row of 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 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 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 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 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 Figure 6a corrected to Figure 6b as shown.

[0058] In the above embodiments, a dynamic compensation mechanism is proposed: real-time calculation of the headlight height and angle through the suspension signal to solve the hysteresis problem of the traditional fixed-parameter model; double-light fusion optimization: accurate calculation of the overlapping area based on the projection geometric relationship to achieve pixel-level offset adjustment; parameter coupling modeling: comprehensive consideration of multiple parameters such as suspension height, headlight position, and FOV to improve the robustness of the model.

[0059] Embodiment 2 Please refer to Figure 7 , this embodiment provides a schematic structural diagram of a double-light projection adaptive correction system based on suspension height adjustment.

[0060] As an example, the system is implemented by using the dual-lamp 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 headlamp controller 3, and a headlamp module 4.

[0061] 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 signal of the vehicle suspension and sending it to the headlamp controller 3.

[0062] The headlamp 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 signal of the vehicle suspension and reading the vehicle's own parameters from the vehicle body electronic controller 2, and the vehicle's own parameters include the 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 the headlamp module parameters; the intelligent calculation module 310 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 inclination angle of the headlamp projection after the vehicle 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 headlamp starting projection distance 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 according to the single-lamp projection width and the distance between the left and right headlamps ; calculating the number of offset pixel points according to the number of pixel points in the overlapping area of the headlamp projection and the headlamp module parameters ; the pixel driving module 320 is suitable for controlling the projection state of the pixel points in the headlamp module 4 based on the number of offset pixel points to correct the dual-lamp projection effect. ; calculating the number of offset pixel points according to the number of pixel points in the overlapping area of the headlamp projection and the headlamp module parameters; ; the pixel driving module 320 is suitable for controlling the projection state of the pixel points in the headlamp module 4 based on the number of offset pixel points to correct the dual-lamp projection effect.

[0063] 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 to the first embodiment.

[0064] 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 that are 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.

[0065] Embodiment 3 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-lamp projection adaptive correction method based on suspension height adjustment provided in Embodiment 1.

[0066] The memory 702 and the processor 701 are connected by a bus. 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, and provides a unit for communicating with various other devices on the transmission medium. The data processed by the processor 701 is transmitted over the wireless medium through the antenna. Further, the antenna also receives data and transmits the data to the processor 701.

[0067] The processor 701 is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interface, 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.

[0068] Embodiment 4 An embodiment of the present invention further 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 has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated herein one by one.

[0069] The above are only embodiments of the present invention. Common knowledge such as specific structures and characteristics known in the art are not described in detail here. Those of ordinary skill in the art know all the common general technical knowledge in the technical field to which the invention belongs before the application date or the priority date, can know all the prior arts 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, combine their own abilities to complete 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, which 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 described in the specification can be used to interpret the content of the claims.

Claims

1. A dual-lamp projection adaptive correction method based on suspension height adjustment, which is integrated into a vehicle lamp controller, and is characterized in that, The method includes: Step S1, collecting the height signal of the vehicle suspension, and obtaining 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, 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 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; 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 ; 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 ; 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 headlight projection overlapping area 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 dual-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 of them.

3. The dual-lamp projection adaptive correction method based on suspension height adjustment according to claim 2, characterized in that, The 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 including: ； 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.

4. The dual-lamp projection adaptive correction method based on suspension height adjustment according to claim 3, wherein The step S5, based on the angle difference and the headlight module parameters, calculates the downward inclination angle of the headlight projection after the vehicle body height changes includes: ； 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.

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

6. The dual-lamp projection adaptive correction method based on suspension height adjustment according to claim 5, characterized in that 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, with the unit of m, represents the downward inclination angle of the headlight projection after the body height changes, represents the projection horizontal field of view angle.

7. The dual-lamp projection adaptive correction method based on suspension height adjustment according to claim 6, wherein Step S8: According to the single lamp projection width and the distance between the left and right vehicle lamps calculate the number of pixel points in the overlapping area of the vehicle lamp projections 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.

8. The dual-lamp projection adaptive correction method based on suspension height adjustment according to claim 7, characterized in that, The step S9, calculating the offset pixel number according to the number of pixel points in the headlight projection overlapping area and the headlight module parameters includes: ； ； In the formula, represents the number of offset pixel points in the first row, represents the number of offset pixel points in the x-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.

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

10. A dual-lamp projection adaptive correction system based on suspension height adjustment, the system is implemented by using the dual-lamp projection adaptive correction method based on suspension height adjustment described in any one of claims 1-9, 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 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 applicable to receiving the height signal of the vehicle suspension and reading 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; 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 number ; The pixel driving module is applicable to the number of biased pixels to control the projection state of the pixels in the headlight module, so as to correct the projection effect of the dual headlights.

Images