Automobile lighting light pattern real-time automatic adjustment method and system

Abstract

The application provides a kind of automobile lighting light type real-time automatic adjusting method and system, comprising the following steps: step 1: taking automobile lighting low beam module sample;Step 2: simulate and carry out high-low temperature cycle test to the sample, obtain experimental data;Step 3: according to the experimental data, obtain the initial result parameter corresponding to different condition parameters;Step 4: the data in step 3 is transformed and data processed, and the corresponding relationship between different "condition parameters" and "the reverse compensation parameter of the reverse compensation position data required by the initial result parameter" is mapped;Step 5: the data and its corresponding relationship mapped in step 4 are input into the control component, and then the control component transmits data information to the adjusting device in real time, and adjusts the target light type to the optimal target result parameter by the adjusting device.The application can accurately and efficiently solve the light type deviation problem.

Description

Technical Field

[0001] This invention relates to the field of automotive lighting technology, specifically to a method and system for real-time automatic adjustment of automotive lighting patterns, and in particular, a method and system for real-time automatic adjustment of automotive lighting patterns that adapts to various condition parameters. Background Technology

[0002] Vehicle lights are a unique and crucial component among the many parts of a car. As parts that provide illumination, signaling, and retroreflection, vehicle lights include headlights, taillights, and retroreflectors, as well as individual fog lights and high-mounted brake lights. The placement of vehicle lights determines that they are not only a major element of a car's appearance and styling, but also a vital element in its practical functions of illumination, signaling, and retroreflection. Among these, the headlights, located at the front of the car, are particularly important, not only for their aesthetic appeal but also for their significance to the driver and other people who see the vehicle. The headlights are essentially the "front" of a car. Their shape and placement on both sides of the front of the vehicle have earned them the nickname "eyes." This is the first important value of headlights: their aesthetic and appearance value. Functionally, headlights, due to their placement on the front of the vehicle, have important and irreplaceable lighting and signaling functions. They provide the driver with a clear view of the road ahead and also provide oncoming vehicles or pedestrians with various signal information. This is the second important value of headlights: their practical value as both lighting and signal lights.

[0003] The most important lighting functions of headlights include providing low beams and high beams necessary for driving. Low beams are mainly used to provide road illumination when meeting oncoming traffic, while high beams are mainly used on relatively open roads. Existing solutions for implementing low beam and high beam modules in headlights include reflector-type and direct-beam types. In addition, with the development and technological innovation of automotive lighting, modules have become a new system form for implementing low beams and high beams and are increasingly favored by OEMs and car buyers. Modules can also be divided into various types such as reflector-type, projector-type, and direct-beam type.

[0004] The low beam function of headlights mainly includes the basic low beam pattern and the central highlight area. The central highlight area includes a very important beam pattern feature of the low beam, namely the cut-off line. The cut-off line is used to prevent glare to oncoming drivers. In practical applications, avoiding glare to oncoming drivers is very important and has a significant impact on safety. Therefore, the cut-off line has very high precision requirements, not only in terms of design precision but also in terms of high stability.

[0005] However, current automotive styling trends are leading to increasingly smaller openings for headlights, especially in the vertical direction. This makes headlight design dimensions a significant challenge. To address this, existing headlight designs are increasingly focusing on optical components and systems with smaller or narrower openings. This has resulted in increasingly smaller (limited) vertical dimensions for the optical components used in headlights, particularly headlights, to achieve low and high beams. Taking modules as a prime example, which best exemplify current design trends, module openings are becoming increasingly narrow, from the earliest vertical openings exceeding 50mm to those that conform to the headlight's shape. As modules have evolved and become smaller, they have started with 50mm aperture sizes, then progressed to 45mm, 30mm, and then further broke through to 25mm and 15mm aperture sizes. Not only are the aperture sizes of modules decreasing, but they are also pushing the limits of design significantly. Many OEMs are still demanding aperture sizes of 10mm and 5mm, which shows the trend of development. As the aperture of modules becomes narrower, it is not only the space and structural design itself that are challenged, but more importantly and more difficult to meet in many aspects of optical design. Through continuous research and development, narrow aperture modules have become a technology that can be put into practical application.

[0006] However, the demands of car buyers and OEMs continue to rise. Beyond narrow and elongated designs, customers increasingly desire cool lighting effects, complex dynamic effects such as sequential turn signals and dynamic welcome lights, as well as more and more matrix module lighting functions and practical pixel projection lighting. This results in increasingly higher heat generation in the headlights' light source and optical system. Furthermore, the decreasing depth of headlight design leads to smaller headlight spaces, exacerbating the heat problem. Severe heat issues cause varying degrees of thermal expansion and contraction in different module components, leading to deformation. This deformation inevitably causes the light cut-off line in the module design to shift angles and deviate, ultimately resulting in upward or downward shifts in the light pattern. This reduces the stability of the light cut-off line, and the shift poses a significant risk of glare to drivers, causing harm.

[0007] For example, if the outer lens of the module deforms due to heat, the lower part of the outer lens might protrude by a certain distance (let's say 1mm). This causes the light-receiving surface of the outer lens to tilt from an overall perspective, raising the originally designed cut-off line. This upward tilting of the cut-off line can cause glare for oncoming drivers, creating a safety hazard. Alternatively, if the upper part of the outer lens protrudes by a certain distance (let's say 1mm), the light-receiving surface of the outer lens might tilt from an overall perspective, causing the originally designed cut-off line to drop, thus shortening the road illumination distance. However, regulatory requirements and customer demands will not change due to the trend of reducing the aperture. It is generally known in the field of automotive lighting design that a screen projection at a distance of 10 meters is required to not drop by 10mm, which translates to an angle of 0.057°. Further combining... Figure 3 Let's consider two examples: an opening of 50mm and 5mm. The diagram shows that with an opening of 50mm, a 1mm forward protrusion of the outer lens results in a 1.146° deflection of the cut-off line. With an opening of 5mm, the same 1mm protrusion results in an 11.31° deflection. These data clearly demonstrate the qualitative relationship between opening size and cut-off line deflection angle: the smaller the opening, the greater the impact of deformation on the same part. On the order of magnitude, a 10-fold reduction in opening size results in approximately a 10-fold increase in cut-off line deflection angle. Given the trend towards increasingly smaller opening sizes and requirements, even small deformations due to thermal expansion and contraction (e.g., 1mm) can lead to significant cut-off line deflection issues, potentially failing to meet regulatory requirements and customer needs. Furthermore, the stability of the cut-off line remains a major challenge. The above mainly mentions deformation caused by thermal expansion and contraction. However, the parts themselves also inevitably deform during injection molding and production. If the shape is tilted or has a special shape, the deformation of the parts during production may be more severe. Furthermore, it cannot be ruled out that other parts in the module may deform, such as the primary lens, the focusing device, etc. Or it may be that the deformation of the outer lens, the primary lens, the focusing device, etc., can all lead to the deflection of the cutoff line. In addition, due to the different deformation parts, no specific illustrations or textual explanations combining numerical analysis are provided for the situation where the cutoff line is raised. However, the principle and content are the same, so they will not be elaborated here.

[0008] As headlights become narrower, the openings of modules that achieve the cutoff line between near and dark light become narrower. This leads to a significant deflection of the cutoff line due to reduced headlight space, more complex lighting effects, and serious heat issues. The narrower the opening, the more severe the deviation in the cutoff line becomes. However, with unchanged regulations and customer requirements, it is difficult to achieve stability and reliability in the cutoff line.

[0009] Currently, when encountering issues like deflection or instability of the cutoff line, the corresponding solutions are all reactive. After these problems and phenomena occur, improvements can be made to injection molding quality, such as selecting a better gate location, improving injection molds and equipment, or using better materials for system components to reduce stress release issues caused by thermal expansion and contraction. If the problem is severe, the plastic material can even be directly replaced with metal, as metal has greater strength than plastic and its stress release during thermal expansion and contraction is much less, thus improving stability and resolving the cutoff line deflection problem. However, the above methods have unavoidable drawbacks. First, they are passive measures and cannot fundamentally solve the problem. Different projects require re-analysis of the actual situation of parts and systems to formulate corresponding solutions, which lacks universality and efficiency and increases labor time. Second, the use of better materials, or even metals, will directly increase costs, which is undesirable for the automotive lighting industry and OEMs. Third, the current limit for module aperture is about 15mm, but it may be lower in the future. As mentioned above, the narrower the aperture, the greater the impact on the deflection of the cut-off line. Current measures are unlikely to solve the problem of cut-off line deflection in optical systems with smaller aperture heights in the future. Fourth, current measures are passive measures that are solved after the problem arises, based on experience and continuous debugging and modification. They have limitations and may not be able to solve the problem. They cannot proactively solve the problem during the design phase or throughout the design cycle, and their application is not widespread. Summary of the Invention

[0010] To address the shortcomings of existing technologies, the purpose of this invention is to provide a method and system for real-time automatic adjustment of automotive lighting patterns.

[0011] A method for real-time automatic adjustment of automotive lighting pattern according to the present invention includes the following steps:

[0012] Step 1: Take a sample of automotive lighting;

[0013] Step 2: Place the sample into the experimental equipment for high and low temperature cycling test, simulate and conduct high and low temperature cycling test, and obtain experimental data;

[0014] Step 3: Obtain the initial result parameters corresponding to different condition parameters based on the experimental data; the condition parameters include at least temperature parameters and time parameters, and the initial result parameters are the offset distance data of the light and dark cutoff line or the position data of the brightest point of the far beam;

[0015] Step 4: Transform and process the data from Step 3 to map the correspondence between different "condition parameters" and "reverse compensation parameters of the reverse compensation position data required for the initial result parameters";

[0016] Step 5: Input the data mapped in Step 4 and its corresponding relationship into the control component, collect the real-time condition parameter data of the lighting module during driving and send it to the control component. The control component transmits the corresponding initial result parameter data information to the adjustment device in real time according to the mapping relationship. The adjustment device adjusts the target light pattern to the optimal target result parameters.

[0017] Preferably, the temperature parameter and the time parameter are detected and collected in any of the following ways:

[0018] Method 1: Real-time detection and collection using experimental equipment;

[0019] Method 2: Real-time detection and collection via sensors;

[0020] The initial result parameters are captured and collected by the image acquisition device.

[0021] Preferably, the experimental equipment for detecting and collecting the temperature parameters is an incubator;

[0022] The sensor used to detect and collect the temperature parameters is an NTC temperature sensor or a PTC temperature sensor;

[0023] During the experiment, the temperature sensor feeds back the module's precise temperature data to the experimental equipment in real time through any of the following methods:

[0024] Method 1: Direct feedback to experimental equipment;

[0025] Method 2: Feedback is sent to the ECU, where it is then stored and processed before being fed back to the experimental equipment, or directly fed back to the experimental equipment via the ECU.

[0026] Preferably, when the time parameters are detected and collected in real time using experimental equipment:

[0027] The time parameter is obtained by setting a timing device in the experimental equipment to record time values ​​or duration data, and the time parameter is obtained in any of the following ways:

[0028] Method 1: Directly obtain the time value. By subtracting the start time of the holding temperature range from any real-time time value within the holding temperature range, the duration data at this temperature up to the time of acquisition can be obtained.

[0029] Method 2: Obtain duration data by recording the duration data from the start time of the temperature within the next temperature range until any required real-time point.

[0030] When the time parameters are detected and collected in real time by sensors:

[0031] The time parameter is obtained by setting a timer in the module or the ECU, and the information data is fed back to the information collection system of the experimental equipment in real time to obtain the duration data.

[0032] Preferably, in step 2, the high and low temperature cycling experiment includes a temperature holding interval and a temperature changing interval; the real-time temperature in the temperature holding interval remains constant, while the real-time temperature in the temperature changing interval changes in real time.

[0033] Preferably, when the temperature is maintained within the temperature range of each cycle of the high and low temperature cycling experiment, the data obtained by the high and low temperature cycling experiment includes: the temperature parameter, the time parameter, and the initial result parameter;

[0034] The temperature parameter is the real-time temperature of the module during multiple cycles; the time parameter is the duration between the real-time time points required during multiple cycles after reaching a certain temperature and maintaining that temperature until the end of the process.

[0035] The initial result parameters are the light and dark cutoff line offset data corresponding to the above real-time temperature and duration;

[0036] When the temperature changes within the temperature range of each cycle of the high and low temperature cycling experiment, the data obtained by the high and low temperature cycling experiment includes: the temperature parameter, the time parameter, and the initial result parameter;

[0037] The temperature parameter is the real-time temperature of the module during multiple cycles.

[0038] The time parameter is the change time value corresponding to any real-time temperature within the temperature change range;

[0039] The initial result parameters are the light and dark cutoff line offset data corresponding to the real-time temperature and the time parameter at that temperature.

[0040] Preferably, the duration is obtained in any of the following ways:

[0041] Method 1: Obtained by taking time values, the duration at that temperature up to the time of acquisition is obtained by subtracting the start time of the holding temperature from any real-time time value within a holding temperature range;

[0042] Method 2: Obtain the duration by setting a timing device in the device to record the duration data from the start time of the temperature range to any desired real-time point.

[0043] Preferably, the change time value is obtained in any of the following ways:

[0044] Method 1: Obtain time data corresponding to the real-time temperature from the start of the high and low temperature cycling test to any change using high and low temperature cycling test equipment;

[0045] Method 2: Set a timing device to record the duration from the start of each temperature change interval in the cycle to any desired real-time point.

[0046] Preferably, step 5 specifically comprises:

[0047] Step a: When the vehicle is running or the lights are working, the ECU receives real-time temperature information from the temperature sensor in the module, and at the same time, the ECU receives real-time time point or duration information from the timer in the module.

[0048] Step b: The ECU retrieves the mapped data information, including the temperature, time, and reverse compensation angle data and their corresponding relationships for the temperature holding range and temperature changing range in real time, and obtains the required reverse compensation angle data when the two-dimensional conditions of temperature and time are met.

[0049] Step c: The ECU feeds back the reverse compensation angle data and transmits it to the motor of the drive component of the adjustment device, and feeds back whether the real-time state is in the temperature holding range or the temperature changing range, and feeds back the instruction information of the operation that the motor needs to perform in the corresponding range.

[0050] Step d: After receiving the data information, the motor converts the data information into instructions that can be recognized by the motor through its data information parsing mechanism and control mechanism, and transmits the instructions. Its execution mechanism performs the adjustment operation of the required reverse compensation angle corresponding to each real-time two-dimensional condition of "temperature" and "time". The drive module adjustment system or adjustment mechanism of the adjustment device moves to make the light and dark cutoff line reverse deflection and position shift, so as to obtain the optimal light and dark cutoff line or the light and dark cutoff line within the allowable range of light and dark cutoff line offset, and adjust the target light pattern to the target result parameters.

[0051] The present invention also provides a real-time automatic adjustment system for automotive lighting patterns, comprising the following modules:

[0052] Module M1: Take an automotive lighting example;

[0053] Module M2: Place the sample into the experimental equipment for high and low temperature cycling test, simulate and conduct high and low temperature cycling test, and obtain experimental data;

[0054] Module M3: Obtains initial result parameters corresponding to different condition parameters based on the experimental data; the condition parameters include at least temperature parameters and time parameters, and the initial result parameters are the offset distance data of the light and dark cutoff line or the position data of the brightest point of the far beam;

[0055] Module M4: Transforms and processes the data in Module M3, mapping out the correspondence between different "condition parameters" and "reverse compensation parameters of the reverse compensation position data required for the initial result parameters";

[0056] Module M5: Inputs the data mapped from Module M4 and its corresponding relationships into the control component, collects real-time condition parameter data of the lighting module during driving and sends it to the control component. The control component transmits the corresponding initial result parameter data information to the adjustment device in real time according to the mapping relationship, and the adjustment device adjusts the target light pattern to the optimal target result parameters.

[0057] Compared with the prior art, the present invention has the following beneficial effects:

[0058] 1. The method of the present invention can accurately and efficiently solve the problem of light pattern offset (such as the offset of the light and dark cutoff line);

[0059] 2. In the method of the present invention, the condition parameters are two-dimensional temperature and time, which greatly improves accuracy and reliability;

[0060] 3. The method of the present invention covers various situations, including main temperature points, temperature holding ranges, temperature change ranges, etc., and has wide adaptability, broad coverage, and high adaptability.

[0061] 4. As the opening size of automotive lighting modules or optical systems becomes narrower and smaller, the problem of light pattern (such as the cut-off line) deflection caused by slight component deformation or thermal expansion and contraction will be amplified and more serious. The cut-off line reverse compensation method of the present invention can solve the problem of cut-off line offset when considering temperature and time parameters. It is not limited even when facing automotive lighting modules or optical systems with increasingly smaller opening sizes, and can effectively and with high quality solve this problem.

[0062] 5. In addition to solving the problem of beam pattern shift, this invention is becoming increasingly applicable and valuable as optical systems with increasingly narrower aperture sizes develop and the resulting beam pattern shift becomes more and more severe.

[0063] 6. Since the technical solution of the present invention can efficiently and accurately compensate for optical pattern shift in the reverse direction, materials with less heat deformation can be used in the material selection of various parts of the related optical system. Ultimately, there will be no optical pattern shift problem through the technical solution of the present invention, thus reducing material costs.

[0064] 7. Applicable to various types of optical systems, enabling optical systems such as low beam, high beam, ADB, and integrated low and high beam. Attached Figure Description

[0065] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0066] Figure 1 This is a flowchart of the steps of the real-time automatic adjustment method for automotive lighting patterns according to the present invention;

[0067] Figure 2 This is a specific data record and data graph of a high and low temperature cycling experiment in one embodiment;

[0068] Figure 3 For the corresponding Figure 2 The data chart in the image is a schematic diagram of a data table.

[0069] Figure 4 Logic diagram for selecting the method of collecting temperature parameters for the ECU;

[0070] Figure 5 Logic diagram for selecting the method of collecting timing parameters for the ECU;

[0071] Figure 6 This is a schematic diagram illustrating the adjustment principle of the real-time automatic adjustment method for automotive lighting patterns according to the present invention.

[0072] Figure 7 This is a comparison and explanation diagram of the effect of module opening size on cutoff line offset. Detailed Implementation

[0073] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0074] Example 1:

[0075] like Figures 1-7 As shown, this embodiment provides a method for real-time automatic adjustment of automotive lighting pattern, including the following steps:

[0076] Step 1: Take a sample of automotive lighting; in this embodiment, the sample of automotive lighting is a sample of automotive low beam module;

[0077] Step 2: Place the sample into the high and low temperature cycling test equipment to simulate and conduct the high and low temperature cycling test, and obtain experimental data. The high and low temperature cycling experiment includes a temperature holding interval and a temperature changing interval. The real-time temperature in the temperature holding interval remains constant, while the real-time temperature in the temperature changing interval changes in real time. When in the temperature holding interval of each cycle of the high and low temperature cycling experiment, the data obtained from the high and low temperature cycling experiment includes: temperature parameters, time parameters, and initial result parameters. The temperature parameter is the real-time temperature of the module during multiple cycles. The time parameter is the duration between the real-time time points required during multiple cycles after reaching a certain temperature and maintaining that temperature until this process. The initial result parameter is the light and dark cutoff line offset data corresponding to the above real-time temperature and duration. The duration is obtained by any of the following methods: Method 1: Obtained by taking the time value, by subtracting the start time of the holding temperature from any real-time time value in a holding temperature interval until the acquisition time. The duration at this temperature can be obtained in two ways: Method 2: by recording the duration using a timing device in the equipment, from the start time of the temperature within a maintained temperature range until any desired real-time point. When the temperature changes within each cycle of the high and low temperature cycling experiment, the data obtained from the high and low temperature cycling experiment includes: temperature parameters, time parameters, and initial result parameters. The temperature parameter is the real-time temperature of the module during multiple cycles, the time parameter is the change time value corresponding to any real-time temperature within the temperature change range, and the initial result parameter is the offset data of the light and dark cutoff lines corresponding to the real-time temperature and the time parameter at that temperature. The change time value can be obtained in one of the following ways: Method 1: by acquiring the time data corresponding to any real-time temperature during the high and low temperature cycling experiment from the start of the high and low temperature cycling experiment through the high and low temperature cycling experiment equipment; Method 2: by setting a timing device to record the duration data from the start of the temperature change range of each cycle to any desired real-time point.

[0078] Step 3: Obtain the initial result parameters corresponding to different conditions based on the experimental data; the condition parameters include at least temperature and time parameters, and the initial result parameters are the offset distance data of the light and dark cutoff line or the data of the brightest point position of the far beam;

[0079] Step 4: Transform and process the data from Step 3 to map the correspondence between different "condition parameters" and "reverse compensation parameters of the reverse compensation position data required for the initial result parameters";

[0080] Step 5: Input the data mapped in Step 4 and its corresponding relationship into the control component, collect the real-time condition parameter data of the lighting module during driving and send it to the control component. The control component transmits the corresponding initial result parameter data information to the adjustment device in real time according to the mapping relationship. The adjustment device adjusts the target light pattern to the optimal target result parameters.

[0081] Temperature and time parameters are detected and collected in real time using either of the following methods: Method 1: Real-time detection and collection via experimental equipment; Method 2: Real-time detection and collection via sensors. The experimental equipment for detecting and collecting temperature parameters is a temperature chamber, and the sensors for detecting and collecting temperature parameters are NTC or PTC temperature sensors or other thermistors. During the experiment, the temperature sensor feeds back the module's precise temperature data to the experimental equipment in real time using either of the following methods: Method 1: Direct feedback to the experimental equipment; Method 2: Feedback to the ECU, which then stores and processes the data before feeding it back to the experimental equipment, or direct feedback from the ECU to the experimental equipment.

[0082] When time parameters are detected and collected in real time using experimental equipment: Time parameters are recorded by the timing device set in the experimental equipment, either as time values ​​or duration data. Time parameters can be obtained in one of the following ways: Method 1: Directly obtain the time value by subtracting the start time of a holding temperature range from any real-time time value within that range to obtain the duration data at that temperature up to the time of acquisition; Method 2: Obtain duration data by recording the duration data from the start time of that temperature within a holding temperature range until any desired real-time point. When time parameters are detected and collected in real time using sensors: Time parameters are obtained by setting a timer in the module or ECU to feed the information data back to the information collection system of the experimental equipment in real time to obtain duration data. Initial result parameters are captured and collected by an image acquisition device.

[0083] The above step 5 is specifically as follows: Step a: When the vehicle is running or the lights are working, the ECU receives real-time temperature information transmitted from the temperature sensor set in the module, and at the same time, the ECU receives real-time time point or duration information transmitted from the timer set in the module.

[0084] Step b: The ECU retrieves the mapped data information, including the temperature, time, and reverse compensation angle data and their corresponding relationships for the temperature holding range and temperature changing range in real time, and obtains the required reverse compensation angle data when the two-dimensional conditions of temperature and time are met.

[0085] Step c: The ECU feeds back the reverse compensation angle data and transmits it to the motor of the drive component of the adjustment device, and feeds back whether the real-time state is in the temperature holding range or the temperature changing range, and feeds back the instruction information of the operation that the motor needs to perform in the corresponding range.

[0086] Step d: After receiving the data information, the motor converts the data information into instructions that can be recognized by the motor through its data information parsing mechanism and control mechanism, and transmits the instructions. Its execution mechanism performs the adjustment operation of the required reverse compensation angle corresponding to each real-time two-dimensional condition of "temperature" and "time". The drive module adjustment system or adjustment mechanism of the adjustment device moves to make the light and dark cutoff line reverse deflection and position shift, so as to obtain the optimal light and dark cutoff line or the light and dark cutoff line within the allowable range of light and dark cutoff line offset, and adjust the target light pattern to the target result parameters.

[0087] In step d, when the motor actuator performs the reverse compensation operation, it divides the temperature holding interval and the temperature changing interval into two intervals. The information for both intervals comes from ECU commands. When the motor actuator is in the temperature holding interval, it performs the required reverse compensation angle adjustment operation corresponding to the two-dimensional conditions of the real-time temperature of each module and the duration of this temperature holding interval. When the motor actuator is in the temperature changing interval, it performs the required reverse compensation angle adjustment operation corresponding to the two-dimensional conditions of the real-time temperature of each module and the change time value of the real-time temperature in this temperature changing interval.

[0088] The data is transformed and processed. The resulting reverse compensation distance data is combined with the design parameters of the module's structure and size, system architecture, and position data to calculate and convert the "reverse compensation distance data required for the offset of the target light pattern's light and dark cutoff line at a specific "temperature" and "duration" into "reverse compensation deflection angle data". The reverse compensation deflection angle data includes data values ​​and direction vectors. The calculation method is manual calculation or obtained digitally using spreadsheets, charts, program code, or other methods.

[0089] The adjustment device comprises two stages: the first stage is a drive assembly, and the second stage is an adjustment system. The drive assembly is a motor, and the adjustment system is the element to be adjusted or an adjustment mechanism with an adjustment function. The element to be adjusted has its own adjustment structure, which is a ball joint structure. The adjustment mechanism with an adjustment function is an adjustment slider, an adjustment rod, or an adjustment bracket. In other embodiments, it may also be other adjustment mechanisms with an adjustment function.

[0090] The target result parameter includes the following two cases: one is that the target result parameter is within the allowed range; the other is that the target result parameter is within the allowed range and is located at a data value of 0.

[0091] The difference between the "target result parameter" and the "initial result parameter" is handled by taking either the average value or the optimal value applicable to all cases. Specifically, when the optimal value is chosen, it must be within the allowable range of all possible differences. Alternatively, the average value can be chosen, which includes two methods: one is the average of the reverse compensation data corresponding to each specific condition parameter in multiple cycles of the high and low temperature cycling experiment; the other is the average of the reverse compensation data corresponding to the specific condition parameter in each cycle of the high and low temperature cycling experiment.

[0092] The data from multiple temperature holding intervals can be averaged to obtain the optimal data for practical engineering applications. Alternatively, each cycle's data can be treated as an individual sample, combined with the time period of each cycle, to obtain better temperature and time-related conditional parameters. In this case, the time parameter is not only the duration of the temperature holding interval but also the time information (including the number of cycles) within the overall framework of the cyclic test. For practical applications, the difference between the values ​​of the vehicle and headlight module in the first and second time within a certain temperature holding interval, and the slight deviation in the brightness cutoff line compensation data, can be compensated by the set temperature and "time" two-dimensional conditional parameters. Although the difference is small and negligible in practical engineering, this situation is theoretically better. In actual use of this method, multiple high and low temperature cycle tests should be conducted to obtain multiple values ​​of this specific temperature and time parameters and average them. The temperature and time parameters obtained in each cycle test are unique, and the data from the first, second, and third cycles are also unique. They are not averaged. By conducting multiple high and low temperature cycle tests, the average value of these parameter positions at each time is taken to optimize the data.

[0093] The obtained cutoff line offset data corresponding to each temperature and duration during high and low temperature cycling are used as known values; the difference between the value within the dashed box of the allowable tolerance range of the target result parameter for each temperature and duration and the cutoff line offset data of the initial result parameter are calculated; the average or optimal value of the difference is taken and applied to all cycles; the required reverse compensation distance data for the cutoff line offset value corresponding to each temperature and duration is obtained. The high and low temperature cycling experiment is performed at least three times.

[0094] The optimal temperature change range applies to temperatures ranging from room temperature to extreme low temperatures, from extreme low temperatures to extreme high temperatures, and from extreme high temperatures to room temperature; preferred temperatures are 20℃ to -40℃, -40℃ to 100℃, and 100℃ to 20℃. The optimal temperature holding range applies to room temperature, extreme low temperatures, and extreme high temperatures; preferred temperatures are 20℃, -40℃, and 100℃. The amount of data is directly proportional to the precision of the values ​​taken per unit time; the smaller the value taken per unit time, the higher the precision, and the larger the amount of data.

[0095] Example 2:

[0096] This embodiment provides a real-time automatic adjustment system for automotive lighting patterns, including the following modules:

[0097] Module M1: Take an automotive lighting example;

[0098] Module M2: Place the sample into the experimental equipment for high and low temperature cycling test, simulate and conduct high and low temperature cycling test, and obtain experimental data;

[0099] Module M3: Obtains initial result parameters corresponding to different condition parameters based on the experimental data; the condition parameters include at least temperature parameters and time parameters, and the initial result parameters are the offset distance data of the light and dark cutoff line or the position data of the brightest point of the far beam;

[0100] Module M4: Transforms and processes the data in Module M3, mapping out the correspondence between different "condition parameters" and "reverse compensation parameters of the reverse compensation position data required for the initial result parameters";

[0101] Module M5: Inputs the data mapped from Module M4 and its corresponding relationships into the control component, collects real-time condition parameter data of the lighting module during driving and sends it to the control component. The control component transmits the corresponding initial result parameter data information to the adjustment device in real time according to the mapping relationship, and the adjustment device adjusts the target light pattern to the optimal target result parameters.

[0102] Example 3:

[0103] Those skilled in the art can understand this embodiment as a more specific description of Embodiment 1 and Embodiment 2.

[0104] This embodiment provides a method for real-time automatic adjustment of automotive lighting patterns, including the following steps:

[0105] Step 1: Take a sample of the automotive lighting low beam module;

[0106] Step 2: Place the sample into the experimental equipment for high and low temperature cycling test, simulate and conduct high and low temperature cycling test, and obtain experimental data;

[0107] Step 3: Obtain the initial result parameters corresponding to different condition parameters based on the experimental data; the condition parameters include at least temperature parameters and time parameters, and the initial result parameters are the offset distance data of the light and dark cutoff line or the position data of the brightest point of the far beam;

[0108] Step 4: Transform and process the data from Step 3 to map the correspondence between different "condition parameters" and "reverse compensation parameters of the reverse compensation position data required for the initial result parameters";

[0109] Step 5: Input the data mapped in Step 4 and its corresponding relationship into the control component. Then, the control component transmits the data information to the adjustment device in real time, and the adjustment device adjusts the target light pattern to the optimal target result parameters.

[0110] Temperature parameter data: The temperature parameter data refers to the experimental settings of the chamber during high and low temperature cycling experiments. In practical applications, more accurate temperature data of the module can be fed back to the experimental equipment in real time during the experiment using NTC sensors or other thermistors located in or near the module within the lamp, or fed back to the ECU for storage, processing, or output to the experimental equipment to obtain more accurate temperature data. Both the chamber temperature and the real-time temperature of the module or its surroundings output by NTC sensors are acceptable as temperature data. From an engineering perspective, both meet engineering feasibility requirements and do not have margin deviations that could lead to engineering defects. The latter has higher accuracy. Although the temperature of the chamber, the overall lamp temperature, and the module temperature are not significantly different during high and low temperature cycling experiments, considering factors such as time, after the entire lamp is lit, especially for light sources and heat sources like modules, the actual module temperature may be higher than the chamber temperature as the lighting time increases and heat accumulates inside the module. Therefore, using temperature sensors such as NTC sensors to detect and collect temperature parameter data is more accurate.

[0111] Real-time temperature and ambient temperature:In actual operation, the ECU receives the real-time temperature of the module and uses the previously mapped data and corresponding relationships to derive the required reverse compensation angle deflection data for that temperature, which is then transmitted to the motor for execution. Here, temperature refers to the actual real-time temperature within or near the module. Since the final determination of the module's cutoff line and the required deflection compensation is not based on the ambient temperature, but rather on the module's temperature, the optimal method for obtaining this temperature is an NTC or other temperature sensor located within or near the module. For example, in the first scenario, the ambient temperature is high, but the headlights operate for a short time (i.e., the module is only illuminated for a short period). In the second scenario, the ambient temperature is low, but the headlights operate for a longer period (i.e., the module is illuminated for a longer period). Although the ambient temperature is lower in the first scenario than in the second, the actual real-time temperature of the module is the same in both scenarios due to the different illumination durations. In this case, the required value is the module's real-time temperature, not the ambient temperature.

[0112] Factors affecting temperature parameter data: The real-time temperature parameters of the module are affected by many factors. The temperature varies across different locations when the entire headlight is illuminated. Furthermore, the vehicle operates for extended periods, during which the engine also runs, generating significant heat, especially in gasoline-powered vehicles. Since the engine is close to the headlights, this heat can transfer to the headlights, increasing the module temperature. Additionally, low nighttime temperatures and varying ambient temperatures at different times of day can also affect the headlight module temperature. Many factors influence temperature, including geographical location, time of day, environmental conditions, module illumination time, headlight operating time, and vehicle operating time. Therefore, the temperature parameters needed for actual operation to compensate for cutoff line deflection are the real-time temperature data of the module or its vicinity.

[0113] Considering time parameters: Based on the above, it can be concluded that there is room for optimization in using temperature as the sole conditional variable to map data and corresponding relationships. Combining the attached high and low temperature cycling experimental data and graphs, it can be seen that at 100℃, although the experimental chamber temperature is maintained at 100℃, the offset of the cutoff line on the vertical axis changes during the three cycles. That is, although the temperature is 100℃ and all three cycles maintain 100℃, the offset of the cutoff line corresponding to 100℃ varies throughout the process; the offset is not the same. The reason for this problem lies in the variable of time. At each instant, the module has the same temperature value (that is, the instantaneous temperature value). However, when continuously lit and operating at the same temperature, there are two factors: heat accumulation and stress release within the module. There are also factors such as slight deformation of parts over time, many of which are elastic reversible deformations, and other minor factors (not elaborated here). These factors all lead to deviations and differences in the cutoff line offset data at the same temperature, thus introducing a very important variable: time.

[0114] The time parameter can be understood as: the duration of time after reaching a certain temperature, which is taken as the zero point of time, and before the temperature changes; the offset data of the light and dark cutoff lines for different durations at a specific temperature are different, unique, and obtainable; or it can be understood as: the change time value corresponding to any real-time temperature in the temperature change range when the temperature changes in real time, which is taken as the zero point of time; or it can be understood as: the elapsed time since the start of this trip.

[0115] The method steps of this embodiment include temperature, duration, and reverse compensation data, specifically:

[0116] When conducting the high and low temperature cycling experiment in step 1, in addition to capturing the real-time temperature of the module, it is also necessary to capture the duration between the required real-time time points after reaching a certain temperature and maintaining that temperature until the end of the process.

[0117] Time parameters can be obtained through experimental equipment used in high and low temperature cycling experiments. If the experimental equipment has the function or device to directly acquire time values ​​or duration data, the former can be obtained by subtracting the beginning time (the start time of this holding temperature) from any real-time time value in a certain holding temperature range to obtain the duration at this temperature up to "now". The latter can be obtained by setting a timing device in the equipment to record the duration data from the start time of this temperature to any desired real-time time point in a certain holding temperature range. Alternatively, a timer can be set in the module or the ECU to feed the information back to the information collection system of the experimental equipment or a separate device specifically designed to collect this information in real time. Whether the duration data is obtained by subtracting time "points" or by taking time "segments", in practical applications, one of the above two methods can be selected as needed.

[0118] In the preferred embodiment, the experimental equipment includes a computer connected to and controlling a camera. The camera takes pictures and acquires data at regular intervals. Because the computer is connected to the camera, its timing device records the time parameters each time the camera takes a picture, thus obtaining time parameter data. The obtained experimental data is shown in the figure below. Figure 2 Even when maintaining the same temperature, the offset distances between the light and dark cutoff lines may differ; obtaining specific data as two-dimensional conditions corresponding to the offset distances between the light and dark cutoff lines for the duration of this temperature holding interval results in a much larger dataset than... Figure 2 The amount of data for the one-dimensional condition corresponding to the offset distance of the light and dark cutoff lines at the temperature shown is such that, in this embodiment, the amount of data depends on the length of the value interval; the shorter the interval, the higher the accuracy.

[0119] like Figure 2As shown, the time interval between any two data points is one hour, which is usually sufficient as the data point range. However, if the condition is a two-dimensional condition involving temperature and the duration of this temperature range, then the accuracy of the values ​​per unit time needs to be increased. For example, if 30 minutes is used as the unit time, the temperature range held for each hour in the high and low temperature cycling experiment (such as the repeated occurrences of 100℃ to 100℃, -40℃ to -40℃, and 20℃ to 20℃) will be recorded twice. If 10 minutes is used as the unit time, the temperature range held for each hour in the high and low temperature cycling experiment will be recorded six times. If 5 minutes is used as the unit time, the temperature range held for each hour in the high and low temperature cycling experiment will be recorded twelve times. If 1 minute is used as the unit time, the temperature range held for each hour in the high and low temperature cycling experiment will be recorded sixty times. It can be seen that the shorter the value interval, the more experimental data is generated, and the higher the accuracy of the values.

[0120] In the preferred example, a unit time of less than 1 minute is selected as the unit time, such as 30 seconds, 20 seconds, and 10 seconds. Then, the holding temperature range of each hour in the high and low temperature cycling experiment will record 120, 180, and 360 data points, respectively. The most accurate and optimal method can achieve completely real-time data acquisition and recording. If 1 second is selected as the interval time, then the holding temperature range of each hour in the high and low temperature cycling experiment will record 3600 data points.

[0121] Considering practical engineering value and the actual conditions of vehicle lights, this embodiment uses 1 minute as the unit of time. The high and low temperature cycling experiment records 60 data points per hour within the maintained temperature range. These 60 data points include two-dimensional conditional parameters (i.e., temperature and the duration of this temperature maintenance range) and one-dimensional initial result parameters (i.e., the result data of the offset distance between the light and dark cutoff lines). Choosing 1 minute as the unit of time in this embodiment is preferable to practical engineering scenarios. It avoids the problem of excessively small unit times leading to a large and unnecessary data volume, while also avoiding the drawbacks of excessively large unit times such as 30 minutes, 20 minutes, or 10 minutes, which result in insufficient data and inadequate accuracy. Using 1 minute as the unit of time provides a moderate amount of data with sufficient accuracy to meet the actual working requirements of vehicle lights.

[0122] correspond Figure 2 Regarding the data information on the left side, in this embodiment, the left side data information will consist of the following columns: the first column is the offset distance of the light and dark cutoff line, the second column is the temperature, the third column is the duration of this temperature holding interval, the fourth column is the allowable single-sided deviation value, and the fifth column is the allowable range value of the entire interval.

[0123] Another scenario is: real-time detection and recording, which is also performed in real time when the ECU controls the drive device control module to perform reverse compensation motion in subsequent steps, and has full adaptability. In this case, the unit time can be 1 second, 0.5 seconds, or even smaller. Although the amount of data will be very large, in order to achieve full real-time performance and adaptive cutoff line adjustment compensation, the amount of data can be obtained, recorded, processed, and output, which is entirely feasible in engineering.

[0124] The information obtained after the high and low temperature cycling experiment includes temperature, the duration of the temperature holding interval, and the offset distance of the light and dark cutoff lines corresponding to the two-dimensional conditions of temperature and the duration of the temperature holding interval. The specific details of the two-dimensional condition data of temperature and the duration of the temperature holding interval are as follows, and the offset distance data of the light and dark cutoff lines corresponding to the two-dimensional conditions of temperature and the duration of the temperature holding interval are also obtained:

[0125] Data 1: Temperature, duration is 0 (the start time of this temperature holding interval) - corresponding light / dark cutoff line offset distance;

[0126] Data 2: Temperature, duration is unit time * 1 (this temperature holding interval is the holding time of 1 unit time from the start time) - corresponding light and dark cutoff line offset distance;

[0127] Data 3: Temperature, duration is unit time * 2 (this temperature holding interval is the holding time of 2 units from the start time) - corresponding light and dark cutoff line offset distance; ......;

[0129] Data n: Temperature, duration is unit time * (n-1) (this temperature holding interval is the holding time of n-1 units from the start time, where n-1 = "total time length of this temperature holding interval / unit time" - 1) - the corresponding light and dark cutoff line offset distance;

[0130] Data n+1: Temperature, duration is unit time * n (the holding time of this temperature holding interval from the start time through n unit time, where n = the total time length of this temperature holding interval / unit time) - the corresponding light and dark cutoff line offset distance; data n+1 is the last value of this interval.

[0131] To illustrate with specific circumstances: The temperature in the first cycle is maintained at 20°C, the unit time is one minute, and the total duration of the temperature maintenance interval is one hour.

[0132] Data 1-1: Temperature 20℃, duration is 0 minus the corresponding light-dark cutoff line offset distance 1-1;

[0133] Data 1-2: Temperature 20℃, duration is 1 minute - corresponding light and dark cutoff line offset distance 1-2;

[0134] Data 1-3: Temperature 20℃, duration 2 minutes - corresponding light and dark cutoff line offset distance 1-3;

[0135] Data 1-4: Temperature 20℃, duration is 3 minutes - corresponding light and dark cutoff line offset distance 1-4; ......;

[0137] Data 1-60: Temperature 20℃, duration is 59 minutes - corresponding light and dark cutoff line offset distance 1-60;

[0138] Data 1-61: Temperature 20℃, duration is 60 minutes - corresponding light and dark cutoff line offset distance 1-61;

[0139] The temperature range for the first cycle is -40°C, the unit time is one minute, and the total duration of the temperature range is one hour.

[0140] Data 2-1: Temperature 40℃, duration is 0 minus the corresponding light-dark cutoff line offset distance 2-1;

[0141] Data 2-2: Temperature 40℃, duration is 1 minute - corresponding light and dark cutoff line offset distance 2-2;

[0142] Data 2-3: Temperature 40℃, duration 2 minutes - corresponding light and dark cutoff line offset distance 2-3;

[0143] Data 2-4: Temperature 40℃, duration 3 minutes - corresponding light and dark cutoff line offset distance 2-4; ......;

[0145] Data 2-60: Temperature 40℃, duration is 59 minutes - corresponding light and dark cutoff line offset distance 2-60;

[0146] Data 2-61: Temperature 40℃, duration 60 minutes - corresponding light and dark cutoff line offset distance 2-61;

[0147] The temperature in the first cycle is maintained at 100°C for one minute, and the total duration of the temperature maintenance interval is one hour.

[0148] Data 3-1: Temperature 100℃, duration is 0 minus the corresponding light-dark cutoff line offset distance 3-1;

[0149] Data 3-2: Temperature 100℃, duration is 1 minute - corresponding light and dark cutoff line offset distance 3-2;

[0150] Data 3-3: Temperature 100℃, duration 2 minutes - corresponding light and dark cutoff line offset distance 3-3;

[0151] Data 3-4: Temperature 100℃, duration 3 minutes - corresponding light and dark cutoff line offset distance 3-4; ......;

[0153] Data 3-60: Temperature 100℃, duration 59 minutes - corresponding light and dark cutoff line offset distance 3-60;

[0154] Data 3-61: Temperature 100℃, duration 60 minutes - corresponding light and dark cutoff line offset distance 3-61;

[0155] The second cycle maintains a temperature range of 20℃, -40℃, and 100℃, and the third cycle maintains the same temperature range. Data values ​​and graphs will also be obtained for each cycle. If the high and low temperature cycling experiment is set to have more than three cycles, there will be fourth, fifth, and subsequent cycles with temperature ranges of 20℃, -40℃, and 100℃. All of the above information can be obtained, recorded, and stored by the experimental equipment and apparatus, and the final output will be as follows: Figure 2 The data table shown serves as a data information repository, representing a similar concept.

[0156] The data from multiple temperature holding intervals can be averaged to obtain the optimal data for practical engineering applications. Alternatively, each cycle's data can be treated as an individual sample, combined with the cycle time period, to obtain better temperature and time parameters. In this case, the time parameter not only represents the duration of the temperature holding interval but also incorporates the overall time information (including the number of cycles) within the entire cyclic test framework. For practical applications, the difference between the values ​​of the vehicle and headlight module in the first and second time within a certain temperature holding interval, and the slight deviation in the brightness cutoff line compensation data, can be compensated and resolved by the set temperature and time parameters. Although the difference is not significant and can be ignored in practical engineering, this situation is theoretically better. In actual use, multiple high and low temperature cycle experiments should be conducted to obtain multiple values ​​of this specific temperature and time parameters and average them. The temperature and time parameters obtained in each cycle experiment are unique, and the data from the first, second, and third cycles are also unique. They are not averaged. By conducting multiple high and low temperature cycle experiments, the average value of these parameter positions is taken to optimize the data.

[0157] In high and low temperature cycling experiments, in addition to the temperature holding interval for each cycle, there is also a temperature change interval, such as... Figure 2The temperature ranges shown are 20℃ to -40℃, -40℃ to 100℃, and 100℃ to 20℃. The three cycles of high and low temperature experiments will each have three of the above temperature ranges.

[0158] Typically, the duration of each interval is the same in high and low temperature cycling experiments, such as... Figure 2 The first cycle from -40°C to -40°C is set to 1 hour, the next cycle from -40°C to 100°C is also set to 1 hour, and so on for each of the remaining intervals.

[0159] The temperature changes over time, and the temperature changes in real time. When the temperature is within the range of temperature change, the temperature value per unit time can be obtained through experimental equipment such as the temperature chamber during high and low temperature cycling experiments. Alternatively, it can be obtained by using an NTC sensor or other thermistor located in or near the module within the lamp to feed back the precise temperature data of the module to the experimental equipment or the ECU in real time during the experiment. The ECU then stores, processes, or outputs the precise real-time temperature data to the experimental equipment. The time parameter data can be obtained by the equipment or device mentioned above.

[0160] The characteristic of temperature change within a temperature variation range is that the temperature changes in real time, which is different from the situation where the temperature remains constant within a temperature holding range but changes over time. Theoretically, when acquiring experimental data, only the temperature value is needed. However, the temperature value is not limited to the three main values ​​of 100℃, -40℃, and 20℃, but includes all temperature values ​​within the experimental temperature range of -40℃ to 100℃. Usually, a value with an accuracy of 1℃ is considered to have obtained a high-precision value, which ensures both data accuracy and optimal engineering practical value. However, if further precision and refinement of the data is desired, such as in high and low temperature cycling experiments where each cycle involves the same initial and final temperatures from one temperature to another (e.g., the range from -40℃ to 100℃, the first, second, and third cycles all follow this range), the time continuously accumulates as the cycle progresses. The offset distance of the light and dark cutoff lines corresponding to the same temperature variation range in each of the three cycles will be different. In this case, introducing two variables, temperature and time, yields the optimal and accurate value for the offset distance of the light and dark cutoff lines.

[0161] The specific data acquisition process involves detecting and collecting real-time temperature and time data using experimental equipment or sensors, and capturing and collecting the offset distance data of the light and dark cutoff lines using a camera. The time data can be the time data between the start of the high and low temperature cycling test and each time point involving the temperature change interval, or the elapsed time data. By obtaining the temperature and the corresponding time value for that temperature change interval in real time, these two values ​​can serve as two-dimensional conditional values ​​for the temperature change interval, resulting in more optimized and accurate data information.

[0162] In step 2, the two conditional parameters of temperature and time, and the result parameter of the light and dark cutoff line offset value, are further subdivided into the following cases: temperature holding interval and temperature change interval for each cycle number. The required light and dark cutoff line reverse compensation distance data for each specific temperature and time parameter under the two-dimensional conditional parameter is calculated. The calculation of the reverse compensation distance data is still the difference between the cutoff line offset data corresponding to each temperature and time and the value of the allowable tolerance range of the dashed box. The temperature holding interval can be averaged after multiple cycles, or the temperature holding interval and temperature change interval can be averaged after multiple high and low temperature cycle experiments.

[0163] In step 4, the "two-dimensional conditions of temperature and time and corresponding reverse compensation angle" are further divided into two types of intervals: temperature holding interval and temperature change interval. The two-dimensional conditions of temperature holding interval - temperature and duration of this temperature holding interval correspond to the direction and corresponding value of the reverse compensation deflection. The two-dimensional conditions of temperature change interval - real-time temperature and the change time value of the temperature in this temperature change interval correspond to the direction and corresponding value of the reverse compensation deflection.

[0164] The mapping data retrieved by the ECU includes time parameters, subdivided into temperature holding intervals and temperature change intervals. The ECU identifies and transmits the data for each interval to the motor, providing feedback on which interval or condition warrants which operation. When the motor performs reverse compensation, it considers the influence of both temperature and time parameters simultaneously. Its actuator adjusts the required reverse compensation angle for each temperature and time condition. Similarly, the motor's execution is also subdivided into temperature holding intervals and temperature change intervals, with information for both intervals derived from ECU commands.

[0165] Example 4:

[0166] Those skilled in the art can understand this embodiment as a more specific description of Embodiment 1 and Embodiment 2.

[0167] This embodiment provides a method for real-time automatic adjustment of automotive lighting patterns, including the following steps:

[0168] Step 1: Take a sample of the automotive lighting low beam module;

[0169] Step 2: Place the sample into the experimental equipment for high and low temperature cycling test, simulate and conduct high and low temperature cycling test, and obtain experimental data;

[0170] Step 3: Obtain the initial result parameters corresponding to different condition parameters based on the experimental data; the condition parameters include at least temperature parameters and time parameters, and the initial result parameters are the offset distance data of the light and dark cutoff line or the position data of the brightest point of the far beam;

[0171] Step 4: Transform and process the data from Step 3 to map the correspondence between different "condition parameters" and "reverse compensation parameters of the reverse compensation position data required for the initial result parameters";

[0172] Step 5: Input the data mapped in Step 4 and its corresponding relationship into the control component. Then, the control component transmits the data information to the adjustment device in real time, and the adjustment device adjusts the target light pattern to the optimal target result parameters.

[0173] In this embodiment, temperature and time are used as two-dimensional conditional parameters to jointly determine the values ​​of the offset and reverse compensation. The following is a detailed explanation based on specific circumstances:

[0174] If the experimental value is 20℃, then by Figure 2 The data charts and specific data show that although there are slight deviations and differences in the experimental values ​​at 20℃, all offset values ​​at 20℃ are within the allowable range of the dashed cutoff line offset values, and many values ​​can be considered approximately 0. Therefore, the reverse compensation value of the cutoff line in this embodiment is defined as 0 at 20℃, meaning that no reverse compensation is required. Figure 2 As shown in the data chart, the data line for the process from -40℃ to 100℃ is a linear line sloping upwards. The offset of the cutoff line changes from a downward linear offset to an upward linear offset, which is a linear change in value.

[0175] In this embodiment, the cutoff line in the data graph deflects upwards from -40℃ to 100℃. This is caused and determined by the module structure. For other modules with different structures and systems, the cutoff line deflection can be upwards, downwards, linear, or nonlinear. The specific direction depends on the specific module (or any optical system of the same level, such as reflection, projection, or direct projection). However, regardless of the trend and direction of the cutoff line's change in any experimental temperature range, whether it is stable or changing, a general rule can be obtained from the data graph, and a specific offset value can be obtained from the specific data. Then, through the scheme of this embodiment, the corresponding cutoff line offset direction and value are obtained from the temperature, and the cutoff line reverse compensation data is derived. Through the cutoff line reverse compensation, the temperature-corresponding cutoff line offset values ​​are all within the allowable range of the dashed box.

[0176] Considering time parameters: like Figure 2As shown in the data graph and specific data, during the three cycles of maintaining a constant temperature of 100℃ (100℃ to 100℃), the cutoff line offset value changed. This change is mainly due to the passage of time during the experiment, which may cause changes or deformations in the various components of the module. These changes are primarily caused by the release of internal stress in the components. Although the temperature remains constant, the release of internal stress over time causes deformation in the individual components and the entire module system. The cumulative deformation of these components leads to a change in the cutoff line offset value, which can either increase upwards or decrease downwards, depending on the specific system. Therefore, considering both temperature and time parameters simultaneously can significantly improve the accuracy of the adjustment.

[0177] At room temperature of 20℃ and low temperature of -40℃, stress release is relatively slight. As can be seen from the data graph, the change in cutoff line offset value is very small or almost unchanged during the holding of these two temperatures. However, stress release is more severe at high temperature of 100℃. As can be seen from the data graph, the cutoff line offset value changes to a certain extent in several intervals of holding at 100℃. As mentioned above, even if there is a change in cutoff line offset value caused by stress release at a specific temperature of 100℃, regularity and reverse compensation values ​​can still be obtained. This will not be repeated here. The corresponding cutoff line offset value and reverse compensation value are obtained under the two-dimensional known conditions of temperature and time.

[0178] The time interval between taking photos and recording: During the high and low temperature cycling test, this embodiment uses a camera to record data points and values ​​for each hour of the experiment. The camera takes pictures and records data at every hourly time point, obtaining data such as... Figure 2 To achieve more precise control from a technical perspective, the cutoff line offset data values ​​shown can be adjusted by shortening the time interval between camera capture and data recording. For example, in a temperature range where the temperature gradually increases from -40℃ to 100℃, in addition to recording the cutoff line offset values ​​at the beginning and end points of -40℃ and 100℃, which are one hour apart, the camera's recording frequency can be increased to record the cutoff line offset values ​​corresponding to each degree increase in temperature in the middle of this range, or the time interval between camera capture and data recording can be shortened to one minute.

[0179] The number of cycles and experiments in high and low temperature cycling: In this embodiment, the high and low temperature cycling experiment is set to be repeated three times. In practical applications, the number of cycles can be increased according to customer requirements or for more accurate and adaptable data acquisition. The more cycles, the less stress is released as the state ages to a certain extent in the later stages, which reduces the impact on the cutoff line offset and makes the state more stable. Therefore, more experimental data can be obtained for different states at different times, and the data can be more accurate and adaptable.

[0180] In addition to increasing the number of cycles in a single test as mentioned above, another approach is to conduct multiple high and low temperature cycle tests on the same module to increase the number of experiments. By taking the average or optimal value from multiple experiments and selecting the best data, the final optimal data can be used as the mapped temperature and the corresponding reverse compensation angle data, as well as the correspondence between the two.

[0181] Due to production planning and capacity constraints, the same module produced on a module production line will inevitably have multiple batches. In fact, the data and conclusions from high and low temperature cycle tests on each batch of modules will be different and not exactly the same. However, these differences are not significant. In engineering practice, those in the field are well aware that the deviation caused by multiple batches of a product is not significant. Finding the average value through multiple tests yields better results. To obtain the most adaptable and optimal data, multiple tests can be conducted on multiple batches, and the average or optimal value of the data can be used as the data required in the experimental steps.

[0182] Example 5:

[0183] Those skilled in the art can understand this embodiment as a more specific description of Embodiment 1 and Embodiment 2.

[0184] This embodiment provides a method for real-time automatic adjustment of automotive lighting patterns, including the following steps:

[0185] Step 1: Take a sample of the automotive lighting low beam module;

[0186] Step 2: Place the sample into the experimental equipment for high and low temperature cycling test, simulate and conduct high and low temperature cycling test, and obtain experimental data;

[0187] Step 3: Obtain the initial result parameters corresponding to different condition parameters based on the experimental data; the condition parameters include at least temperature parameters and time parameters, and the initial result parameters are the offset distance data of the light and dark cutoff line or the position data of the brightest point of the far beam;

[0188] Step 4: Transform and process the data from Step 3 to map the correspondence between different "condition parameters" and "reverse compensation parameters of the reverse compensation position data required for the initial result parameters";

[0189] Step 5: Input the data mapped in Step 4 and its corresponding relationship into the control component. Then, the control component transmits the data information to the adjustment device in real time, and the adjustment device adjusts the target light pattern to the optimal target result parameters.

[0190] High and low temperature cycling experiments are conducted, divided into temperature holding intervals and temperature change intervals. For the temperature holding interval at each cycle number, the real-time module temperature during multiple cycles, the duration between reaching a certain temperature and maintaining that temperature until the required real-time time point during multiple cycles, and the corresponding light / dark cutoff line offset data for the aforementioned temperature and duration are obtained. For the temperature change interval at each cycle number, the real-time module temperature during multiple cycles, the change time value corresponding to any real-time temperature within this temperature change interval, and the corresponding light / dark cutoff line offset data for the aforementioned real-time temperature and time parameters at that temperature are obtained. The combined data from the temperature holding interval and temperature change interval yields the experimental data graph and specific data. Module real-time temperature: The module temperature is captured in real-time by a temperature sensor (preferably NTC) installed during the experiment. The real-time temperature in the temperature holding interval remains constant, while the real-time temperature in the temperature change interval changes in real-time. Another method for obtaining the module real-time temperature is to obtain it directly using a temperature chamber device, but the accuracy is lower than that of a thermistor installed in or near the module.

[0191] The duration of a temperature holding interval after reaching a certain temperature in each cycle and maintaining that temperature until the required real-time point in time (which can be simply referred to as the duration of this temperature holding interval): This can be obtained through experimental equipment for high and low temperature cycling experiments. The experimental equipment has the function or device to directly acquire time values ​​or duration data. The former is obtained by subtracting the beginning time (the start time of this holding temperature) from any real-time value in a certain holding temperature interval to obtain the duration at that temperature up to "now". The latter can be recorded by setting a timing device in the equipment to record the duration data from the start time of this temperature to any required real-time point in time within a certain holding temperature interval.

[0192] The time corresponding to each real-time temperature change in each cycle when the temperature change process state is reached: obtained through high and low temperature cycling test equipment. The test equipment or device has the function or device to directly acquire the time data corresponding to the real-time temperature during any change from the start of the high and low temperature cycling test, or to set a timing device to record the duration data between the start of the temperature change range of each cycle and any required real-time time point.

[0193] "Duration of this temperature range": The information can also be fed back to the experimental equipment information collection system or a separate device specifically for collecting this information in real time by setting a timer in the module. The duration data can be flexibly obtained by subtracting time "points" or time "segments" as mentioned above. The same applies to temperature change ranges.

[0194] Bright-dark cutoff line offset data: recorded by a camera or image recording sensor. The real-time temperature of the temperature holding interval module and the duration of this temperature holding interval are two-dimensional conditional parameters, and the corresponding bright-dark cutoff line offset data are the result parameters. Similarly, the real-time temperature of the temperature change interval module and the change time value corresponding to any real-time temperature within this temperature change interval are two-dimensional conditional parameters, and the corresponding bright-dark cutoff line offset data are the result parameters. The experimental results include data graph information and specific data information. Information obtained in any form, or in combination, can be acquired, recorded, and stored in the device or apparatus, ultimately serving as a database.

[0195] like Figure 2 and Figure 3 As shown, for the temperature holding range, the specific data information includes: the first column is the corresponding temperature holding range (corresponding to...). Figure 2 The data includes the following columns: A, B, D, F, H, J, L, N, P, R, and T. The second column shows the offset distance of the light / dark cutoff line. The third column is the real-time temperature. The fourth column is the duration of this temperature holding interval. The fifth column is the allowable unidirectional deviation value. The sixth column is the allowable range of deviation for the entire interval. For temperature change intervals, specific data includes: the first column is the corresponding temperature change interval (corresponding to...). Figure 2 The data is categorized into six intervals: C, E, G, I, K, M, O, Q, and S. The second column represents the offset distance of the light / dark cutoff line. The third column is the real-time temperature. The fourth column is the time value corresponding to any real-time temperature within this temperature range. The fifth column is the allowable one-sided deviation value. The sixth column is the allowable range for the entire interval. The time value used for the data is the "duration of this interval." If the time value from the start of the experiment is required, it can be directly calculated and accumulated.

[0196] The smaller the value per unit time, the higher the precision of the value per unit time, resulting in a larger amount of experimental data, meaning more data points are captured in the data graph and a greater amount of data information. For each temperature holding interval in the high and low temperature cycling experiment, data is recorded "total holding time of this temperature interval / unit time + 1" times. This "total holding time of this temperature interval / unit time + 1" data includes two-dimensional temperature and conditional data for the duration of this temperature holding interval, and one-dimensional data for the offset distance of the light / dark cutoff line. For the temperature holding interval, the specific data format is as follows:

[0197] Data 1: The offset distance of the corresponding light and dark cutoff line of Data 1, real-time temperature, the duration of this temperature holding interval is 0 (the start time of this temperature holding interval), the allowable single-sided deviation value, and the allowable range value of the entire interval.

[0198] Data 2: The offset distance of the corresponding light and dark cutoff line of Data 2, real-time temperature, the duration of this temperature holding interval is unit time * 1 (this temperature holding interval is the holding time of 1 unit time from the start time), the allowable single-sided deviation value, and the allowable range value of the entire interval.

[0199] Data 3: The corresponding offset distance of the light and dark cutoff line for Data 3, real-time temperature, the duration of this temperature holding interval is 2 times the unit time (this temperature holding interval is held for 2 units of time from the start time), the allowable single-sided deviation value, and the allowable range of deviation for the entire interval. ......

[0201] Data n: The offset distance of the corresponding light and dark cutoff line of data n, real-time temperature, the duration of this temperature holding interval is unit time * (n-1) (this temperature holding interval is the holding time of n-1 units of time from the start time, where n = the total time length of this temperature holding interval / unit time), the allowable one-sided deviation value, and the allowable range of deviation for the entire interval.

[0202] Data n+1: The offset distance of the light and dark cutoff line corresponding to data n+1, real-time temperature, the duration of this temperature holding interval is unit time * n (the holding time of this temperature holding interval from the start time through n unit time, where n = the total time length of this temperature holding interval / unit time), the allowable one-sided deviation value, and the allowable range of deviation for the entire interval; (data n+1 is the last value of this interval).

[0203] Regarding the temperature holding range: typically high and low temperature cycling experiments, such as Figure 2 The time interval between each two data points shown is one hour. When considering the two-dimensional conditions of real-time temperature and the duration of this temperature holding interval, the optimal time unit is one minute. In the high and low temperature cycling experiment, 60+1 data points are recorded for each hour's holding temperature interval. These 61 data points include the two-dimensional temperature and the duration of this temperature holding interval condition data, and the one-dimensional data showing the offset distance of the light / dark cutoff line. Regarding temperature change intervals: typically, the duration of each interval is the same in the high and low temperature cycling experiment, such as... Figure 2 The first cycle from -40℃ to -40℃ was set to 1 hour, and the subsequent cycle from -40℃ to 100℃ was also set to 1 hour. The unit time was preferably 1 minute. The temperature change range for each hour of the high and low temperature cycling experiment was recorded 60+1 times. These 61 data points included two-dimensional real-time temperature changes and conditional data of the change time value corresponding to any real-time temperature in this temperature change range, as well as one-dimensional data of the offset distance of the light and dark cutoff lines.

[0204] For temperature change intervals: Each temperature change interval in the high and low temperature cycling experiment will record data "total time length of this temperature change interval / unit time + 1" times. The only differences are: a) the data includes two-dimensional "real-time temperature" and "change time value corresponding to any real-time temperature in this temperature change interval" as well as one-dimensional light and dark cutoff line offset distance results; b) unlike the case where "the real-time temperature is the same in each interval of the temperature holding interval", the real-time temperature of the temperature change interval is different and changes in real time.

[0205] For temperature change ranges: real-time temperature data covers all temperature values ​​within the experimental temperature range of -40℃ to 100℃, with an accuracy of 1℃, considered high-precision to ensure data accuracy and optimal engineering value. For temperature holding ranges, the holding temperature ranges for the cycles are 20℃, -40℃, and 100℃, representing normal temperature, extreme low temperature, and extreme high temperature scenarios, respectively. The temperature change ranges for the cycles include temperature variations from 20℃ to -40℃, -40℃ to 100℃, and 100℃ to 20℃, representing normal temperature to extreme low temperature, extreme low temperature to extreme high temperature, and extreme high temperature to normal temperature scenarios, respectively. The high and low temperature cycles are performed at least three times.

[0206] Regarding the temperature holding range: the above data from multiple cycles of the temperature holding range are averaged to obtain the optimal data in practical engineering terms. Alternatively, each cycle's data can be treated as an individual, and combined with the time period of each cycle, a better conditional parameter for the two variables of temperature and time can be obtained. In this case, the time parameter is not only the duration of this temperature holding range, but also the time information under the overall framework of the entire cycle test, including information such as the number of cycles. In terms of practical application value, there is a difference between the values ​​of the vehicle and headlight module when they are in a certain temperature holding range (e.g., 100℃) for the first time and the second time they are in this temperature holding range. The difference and the slight deviation of the data compensated by the cutoff line can be compensated and resolved by the two-dimensional conditional parameters of temperature and "time" set at this time. When using this method in practice, it is necessary to conduct several high and low temperature cycle tests, obtain multiple values ​​of this specific temperature and time parameter, and take the average value.

[0207] For temperature change ranges: real-time temperature can be used as the condition parameter, including all temperature values ​​within the experimental temperature range of -40℃ to 100℃, with a precision of 1℃. This is considered to obtain a high-precision value, ensuring data accuracy and optimal engineering practical value. However, for more precise and refined data, the variable "time" is added as a two-dimensional condition parameter. For example, in high and low temperature cycling experiments, although the starting and ending temperatures are the same for each cycle (e.g., the first, second, and third cycles are all within the same temperature range from -40℃ to 100℃), time continues and accumulates as the cycle progresses. The corresponding light and dark cutoff line offset distances for the same temperature change range in the three cycles are different. In this case, the light and dark cutoff line offset distance values ​​obtained by introducing both temperature and time variables are preferred and accurate.

[0208] During high and low temperature cycling, the two-dimensional conditional parameters of "temperature" and "time" and the corresponding light / dark cutoff line offset data are used as known values. This is further divided into several cases: the first is the temperature hold interval at each cycle number, and the second is the temperature change interval. Specifically: for the temperature hold interval, the two-dimensional conditional parameters of the obtained real-time temperature and the duration of this temperature hold interval, along with the corresponding light / dark cutoff line offset data, are used as known values; for the temperature change interval, the two-dimensional conditional parameters of the obtained real-time temperature and the change time value corresponding to any real-time temperature within this temperature change interval, along with the corresponding light / dark cutoff line offset data, are used as known values.

[0209] Calculate the required reverse compensation distance data for the light and dark cutoff lines under two-dimensional conditional parameters for each specific "temperature" and "time" within the temperature holding range and temperature change range. The range of values ​​for the reverse compensation distance data is obtained by taking the difference between the cutoff line offset data corresponding to each of the above "temperature" and "time" and the value of the allowable tolerance range of the dashed box. The range of this difference exists in the form of an interval, namely the difference between the "corresponding cutoff line offset data" and the upper boundary value (often a positive number) of the allowable tolerance range of the dashed box, and the difference between the "corresponding cutoff line offset data" and the lower boundary value (often a negative number) of the allowable tolerance range of the dashed box. The upper or lower boundary value of the allowable tolerance range of the dashed box needs to be accompanied by their respective "+" and "-" signs. After obtaining the difference interval, the average difference interval is obtained by combining the results of multiple cycles with the overall results of multiple high and low temperature cycle tests to obtain the optimal difference interval.

[0210] Because of the introduction of the time variable, subsequent adjustments are also made on a unit time basis. Therefore, when calculating the reverse compensation distance data for each specific "temperature" and "time" condition variable, the difference between the cutoff line offset data corresponding to each of the above "temperature" and "time" and "0" can be directly obtained. This yields the optimal value of the reverse compensation distance data for each "temperature" and "time" condition variable, i.e., the case where the reverse compensation is made until the cutoff line does not shift. This difference will exist in the form of a value containing a "+" or "-" sign, i.e., "corresponding cutoff line offset data" - 0 = "corresponding cutoff line offset data". Thus, the optimal reverse compensation distance data required for the bright and dark cutoff lines at each "temperature" and "time" is obtained. Then, the average value and the optimal value of the overall results of multiple cycles or multiple high and low temperature cycles are taken as the reverse compensation distance data.

[0211] The obtained reverse compensation data, combined with the module's corresponding structure and dimensions, system position data, and other design parameters, is used to calculate and convert the required reverse compensation distance data for offsetting the light and dark cutoff lines under specific "temperature" and "time" two-dimensional conditions into reverse compensation deflection angle data. This reverse compensation deflection angle data includes both a data value and a direction vector. Knowing the reverse compensation distance data, the adjustment parameters of the module or system's adjustment system, such as the distance between the fixed point and the horizontal or vertical adjustment point, combined with other necessary factors, are used to obtain the reverse compensation angle of the adjustment mechanism corresponding to this reverse compensation distance. The above calculation method can be done manually or obtained digitally using spreadsheets, charts, program code, etc. The above "conversion of the offset required for reverse compensation distance data under two-dimensional conditional parameters of specific temperature and time into reverse compensation deflection angle data" is also subdivided into temperature holding interval and temperature change interval. For the temperature holding interval, the offset of the light and dark cutoff line required under the two-dimensional conditional parameters of the real-time temperature and the duration of this temperature holding interval is converted into reverse compensation deflection angle data. For the temperature change interval, the offset of the light and dark cutoff line required under the two-dimensional conditional parameters of the real-time temperature and the change time value corresponding to any real-time temperature in this temperature change interval is converted into reverse compensation deflection angle data.

[0212] It maps the two-dimensional conditions of temperature and time to the corresponding reverse compensation angle data, and sets and establishes the direction and corresponding value of the reverse compensation deflection that need to be adjusted when a certain temperature and time two-dimensional conditions are completed. It is further divided into two interval cases: temperature holding interval and temperature changing interval. In the temperature holding interval, it maps the two-dimensional conditions of real-time temperature, the duration of this temperature holding interval, and the corresponding reverse compensation angle data. In the temperature changing interval, it maps the two-dimensional conditions of real-time temperature, the change time value of any temperature in this temperature changing interval, and the corresponding reverse compensation angle data.

[0213] First, experiments are conducted to obtain values, and then the corresponding relationships are derived. The "temperature," "time," and reverse compensation angle data for each of the temperature holding range and temperature change range obtained from this mapping, along with their corresponding relationships, are then input into the ECU as known preset values. The format of the mapped data and the final data input into the ECU as known preset values ​​is not limited; it can be in the form of a data table, data list, database, graphical data, code, etc. Regardless of the format, the mapped data and the preset data input into the ECU contain complete data information from the above steps.

[0214] When the vehicle is running or the lights are working, the ECU first collects module temperature information. The first preferred method is that the ECU receives real-time temperature information from the temperature sensor installed in the module. The second preferred method is that the ECU collects module temperature information itself. At the same time, the ECU collects time information. The first preferred method is that the ECU receives real-time time point or duration information from the timer installed in the module. The second preferred method is that the ECU has its own time recording and collection function, or the vehicle has a time recording and collection function and can transmit it to the headlights or directly to the ECU.

[0215] The ECU retrieves the data information in real time, including the temperature, time, and reverse compensation angle data of the temperature holding range and temperature changing range, as well as their corresponding relationships. It then calculates the required reverse compensation angle data when the two-dimensional conditions of temperature and time are met, and feeds it back to the motor. The feedback information indicates whether the "real-time status" is the temperature holding range or the temperature changing range, and what kind of operation the motor needs to perform. The motor actuator performs the adjustment operation of the required reverse compensation angle corresponding to each real-time two-dimensional condition of "temperature" and "time". The drive module adjustment system or adjustment mechanism moves to make the light and dark cutoff lines reverse deflect and shift their position, so as to obtain the optimal light and dark cutoff lines or those within the allowable range of light and dark cutoff line offset.

[0216] When the motor actuator performs reverse compensation operation, it also subdivides into two ranges: temperature holding range and temperature change range. The information for both ranges comes from ECU commands. Specifically, when the motor actuator performs the two-dimensional condition of the real-time temperature of each module and the duration of this temperature holding range for the temperature holding range, it adjusts the required reverse compensation angle accordingly. When the motor actuator performs the two-dimensional condition of the real-time temperature of each module and the change time value of the real-time temperature in this temperature change range for the temperature change range, it adjusts the required reverse compensation angle accordingly.

[0217] Example 6:

[0218] Those skilled in the art can understand this embodiment as a more specific description of Embodiment 1 and Embodiment 2.

[0219] In practical applications, the obtained temperatures and times during high and low temperature cycles, along with the corresponding offset data of the light and dark cutoff lines, can be input into the ECU as known values.

[0220] The ECU has a built-in processing system and algorithm to calculate the required reverse compensation distance data for the cutoff line under each specific two-dimensional conditional parameter of "temperature" and "time" in the temperature holding range and temperature change range. The specific steps are to obtain the value range of the reverse compensation distance data based on the difference between the cutoff line offset data corresponding to each of the above "temperature" and "time" and the allowable tolerance range value of the dashed box. In a preferred example, the difference between the cutoff line offset data corresponding to each of the above "temperature" and "time" and "0" is taken to obtain the optimal value of the reverse compensation distance data for each two-dimensional conditional variable of "temperature" and "time" where the cutoff line does not shift. Then, the average value and the optimal value of the overall results of multiple cycles or multiple high and low temperature cycles are taken as the reverse compensation distance data.

[0221] The ECU combines the obtained reverse compensation distance data with the corresponding structural data parameters of the module, and uses a built-in algorithm to convert the required reverse compensation distance data for the offset of the light and dark cutoff lines at a specific temperature into reverse compensation deflection angle data. The reverse compensation deflection angle data includes a data value and a direction vector. The ECU sets and establishes the direction and corresponding value of the reverse compensation deflection that need to be adjusted for each specific temperature and time two-dimensional condition parameter in the temperature holding range and temperature changing range. The ECU feeds back and transmits the above data and its corresponding data information to the motor in real time.

[0222] The method for compensating for the light and dark cutoff lines in this embodiment is feasible and effective, especially for small modules with increasingly narrow openings.

[0223] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0224] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A method for real-time automatic adjustment of automotive lighting pattern, characterized in that, Includes the following steps: Step 1: Take a sample of automotive lighting; Step 2: Place the sample into the experimental equipment for high and low temperature cycling test, simulate and conduct high and low temperature cycling test, and obtain experimental data; Step 3: Obtain the initial result parameters corresponding to different condition parameters based on the experimental data; the condition parameters include at least temperature parameters and time parameters, and the initial result parameters are the offset distance data of the light and dark cutoff line or the position data of the brightest point of the far beam; Step 4: Transform and process the data from Step 3 to map the correspondence between different "condition parameters" and "reverse compensation parameters of the reverse compensation position data required for the initial result parameters"; Step 5: Input the data mapped in Step 4 and its corresponding relationship into the control component, collect the real-time condition parameter data of the lighting module during driving and send it to the control component. The control component transmits the corresponding initial result parameter data information to the adjustment device in real time according to the mapping relationship. The adjustment device adjusts the target light pattern to the optimal target result parameters. In step 2, the high and low temperature cycling experiment includes a temperature holding range and a temperature changing range; The real-time temperature in the temperature holding range remains constant, while the real-time temperature in the temperature changing range changes in real time. When the temperature is maintained within the temperature range of each cycle of the high and low temperature cycling experiment, the data obtained by the high and low temperature cycling experiment includes: the temperature parameter, the time parameter, and the initial result parameter; The temperature parameter is the real-time temperature of the module during multiple cycles. The time parameter is the duration between the real-time time points required during multiple cycles after reaching a temperature and maintaining that temperature until this process is completed. The initial result parameters are the light and dark cutoff line offset data corresponding to the above real-time temperature and duration; When the temperature changes within the temperature range of each cycle of the high and low temperature cycling experiment, the data obtained by the high and low temperature cycling experiment includes: the temperature parameter, the time parameter, and the initial result parameter; The temperature parameter is the real-time temperature of the module during multiple cycles. The time parameter is the change time value corresponding to any real-time temperature within the temperature change range; The initial result parameters are the light and dark cutoff line offset data corresponding to the real-time temperature and the time parameter at that temperature.

2. The method for real-time automatic adjustment of automotive lighting pattern according to claim 1, characterized in that, The temperature parameter and the time parameter are detected and collected using any of the following methods: Method 1: Real-time detection and collection using experimental equipment; Method 2: Real-time detection and collection via sensors; The initial result parameters are captured and collected by the image acquisition device.

3. The method for real-time automatic adjustment of automotive lighting pattern according to claim 2, characterized in that, The experimental equipment for detecting and collecting the temperature parameters is an incubator; The sensor used to detect and collect the temperature parameters is an NTC temperature sensor or a PTC temperature sensor; During the experiment, the temperature sensor feeds back the module's precise temperature data to the experimental equipment in real time through any of the following methods: Method 1: Direct feedback to experimental equipment; Method 2: Feedback is sent to the ECU, where it is then stored and processed before being fed back to the experimental equipment, or directly fed back to the experimental equipment via the ECU.

4. The method for real-time automatic adjustment of automotive lighting pattern according to claim 2, characterized in that, When the time parameters are detected and collected in real time using experimental equipment: The time parameter is obtained by setting a timing device in the experimental equipment to record time values ​​or duration data, and the time parameter is obtained in any of the following ways: Method 1: Directly obtain the time value. By subtracting the start time of the holding temperature range from any real-time time value within the holding temperature range, the duration data at this temperature up to the time of acquisition can be obtained. Method 2: Obtain duration data by recording the duration data from the start time of the temperature within the next temperature range until any required real-time point. When the time parameters are detected and collected in real time by sensors: The time parameter is obtained by setting a timer in the module or the ECU, and the information data is fed back to the information collection system of the experimental equipment in real time to obtain the duration data.

5. The method for real-time automatic adjustment of automotive lighting pattern according to claim 1, characterized in that, The duration is obtained in any of the following ways: Method 1: Obtained by taking time values, the duration at that temperature up to the time of acquisition is obtained by subtracting the start time of the holding temperature from any real-time time value within a holding temperature range; Method 2: Obtain the duration by setting a timing device in the device to record the duration data from the start time of the temperature range to any desired real-time point within the temperature range.

6. The method for real-time automatic adjustment of automotive lighting pattern according to claim 1, characterized in that, The change time value is obtained through any of the following methods: Method 1: Obtain time data corresponding to the real-time temperature from the start of the high and low temperature cycling test to any change using high and low temperature cycling test equipment; Method 2: Set a timing device to record the duration from the start of each temperature change interval in the cycle to any desired real-time point.

7. The method for real-time automatic adjustment of automotive lighting pattern according to claim 1, characterized in that, Step 5 specifically involves: Step a: When the vehicle is running or the lights are working, the ECU receives real-time temperature information from the temperature sensor in the module, and at the same time, the ECU receives real-time time point or duration information from the timer in the module. Step b: The ECU retrieves the mapped data information, including the temperature, time, and reverse compensation angle data of the temperature holding range and the temperature changing range in real time, and obtains the required reverse compensation angle data when the two-dimensional conditions of temperature and time are met. Step c: The ECU feeds back the reverse compensation angle data and transmits it to the motor of the drive component of the adjustment device, and feeds back whether the real-time state is in the temperature holding range or the temperature changing range, and feeds back the instruction information of the operation that the motor needs to perform in the corresponding range. Step d: After receiving the data information, the motor converts the data information into instructions that can be recognized by the motor through its data information parsing mechanism and control mechanism, and transmits the instructions. Its execution mechanism performs the adjustment operation of the required reverse compensation angle corresponding to each real-time two-dimensional condition of "temperature" and "time". The movement of the adjustment device's drive module adjustment system or adjustment mechanism causes the light and dark cutoff line to achieve reverse deflection and position shift, so as to obtain the optimal light and dark cutoff line or the light and dark cutoff line within the allowable range of light and dark cutoff line offset, and adjust the target light pattern to the target result parameters.

8. A system for implementing the real-time automatic adjustment method for automotive lighting pattern according to any one of claims 1-7, characterized in that, Includes the following modules: Module M1: Take an automotive lighting example; Module M2: Place the sample into the experimental equipment for high and low temperature cycling test, simulate and conduct high and low temperature cycling test, and obtain experimental data; Module M3: Obtains initial result parameters corresponding to different condition parameters based on the experimental data; the condition parameters include at least temperature parameters and time parameters, and the initial result parameters are the offset distance data of the light and dark cutoff line or the position data of the brightest point of the far beam; Module M4: Transforms and processes the data in Module M3, mapping out the correspondence between different "condition parameters" and "reverse compensation parameters of the reverse compensation position data required for the initial result parameters"; Module M5: Inputs the data mapped from Module M4 and its corresponding relationships into the control component, collects real-time condition parameter data of the lighting module during driving and sends it to the control component. The control component transmits the corresponding initial result parameter data information to the adjustment device in real time according to the mapping relationship, and the adjustment device adjusts the target light pattern to the optimal target result parameters.

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