A debugging method of a car lamp with forward-looking detection adjustment

Abstract

The application discloses a debugging method of a front-view detection adjustable automobile lamp, and belongs to the field of the front-view detection adjustable automobile lamp, and comprises the following steps: step one, moving a vehicle to be detected to a test platform and fixing the vehicle; step two, starting the front-view detection adjustable automobile lamp; step three, setting a movable target in front of the front-view detection adjustable automobile lamp; step four, connecting a detection module to a control system of the front-view detection adjustable automobile lamp; step five, controlling the movable target to move according to a predetermined moving track by a debugging unit; step six, after multiple tests; step seven, if an error is less than a predetermined index, no adjustment is needed, and if the error is greater than or equal to the predetermined index, correction is needed. According to the application, the predetermined moving tracks of multiple movable targets are set, multiple tests are conducted, the front-view detection adjustable automobile lamps of different vehicle types can be simulated, and the accuracy of the debugging result is ensured.

Description

Technical Field

[0001] This invention belongs to the field of automotive headlights that can be adjusted by forward-looking detection, specifically a method for adjusting automotive headlights that can be adjusted by forward-looking detection. Background Technology

[0002] Forward-looking, adjustable automotive headlights can automatically adjust their illumination angle and range based on road conditions and obstacle positions, effectively improving driving safety at night and in low-visibility environments. This makes them a crucial functional module in current automotive active safety systems. To ensure the actual adjustment accuracy meets design requirements, the control system's adjustment logic and parameters must be professionally debugged before mass production or long-term use. However, current debugging methods often involve directly adjusting parameters, resulting in low accuracy in actual use. Furthermore, most tests are conducted under single, fixed conditions, failing to cover the complex usage scenarios encountered during real-world driving. This easily leads to situations where laboratory testing is successful, but actual driving reveals excessive adjustment deviations. Additionally, existing debugging methods suffer from insufficient data acquisition, easily overlooking key adjustment parameters, further reducing the accuracy of the debugging results and failing to meet the current production and after-sales debugging needs of high-precision, forward-looking, automatically adjustable headlights. Summary of the Invention

[0003] This invention provides a method for adjusting automotive headlights that can be detected and adjusted in a forward-looking manner, thereby overcoming the deficiencies in the prior art.

[0004] This invention is achieved through the following technical solution: A method for adjusting automotive headlights with forward-looking detection includes the following steps: Step 1: Move the vehicle to be tested onto the test platform and secure it. Step 2: Turn on the car lights that can be adjusted with forward-looking detection; Step 3: Set up a movable target in front of the car headlights, which are adjustable for forward-looking detection; Step 4: Connect the detection module to the control system of the car lights that can be adjusted by forward-looking detection; Step 5: The debugging unit controls the movable target to move along a predetermined trajectory, and the detection module acquires the adjustment data of the car lights that can be adjusted in front of the camera in real time. Step Six: After conducting multiple tests, compare the obtained adjustment data of the forward-looking adjustable car headlights with the theoretical standard adjustment data; Step 7: If the error is less than the predetermined target, no adjustment is needed. If the error is greater than or equal to the predetermined target, the control system of the forward-looking and adjustable car lights needs to be corrected, and the test should be repeated until the error is less than the predetermined target.

[0005] As described above, in the method for adjusting a car headlight with forward-looking detection, before the vehicle to be tested is moved to the test platform in step one, the tire pressure, suspension height, and body posture of the vehicle are pre-checked. After the check is correct, the vehicle is moved to the test platform and the four positioning points of the vehicle chassis are locked and fixed by the limiting clamps to prevent the vehicle to be tested from shifting or deviating in posture during the debugging process, thus ensuring the accuracy of the test data.

[0006] As described above, in the adjustment method of a forward-looking adjustable car headlight, in step two, the forward-looking adjustable car headlight is turned on for 30-50 seconds before proceeding with subsequent operations.

[0007] As described above, the adjustment method for a forward-looking and adjustable automotive headlight includes a movable target with different areas and shapes that can be selected according to the test conditions. A target movement module is set on the test platform. The target movement module can move the target along the horizontal and vertical dimensions according to the path instructions sent by the adjustment unit, providing a stable position reference for adjusting the illumination angle of the headlight.

[0008] As described above, the method for adjusting a car headlight with forward-looking detection involves a detection module that collects headlight illumination position recognition data output by the forward-looking detection unit and headlight adjustment motor action parameters output by the control system. The two types of data are integrated, packaged, and transmitted to the adjustment unit. This ensures that the adjustment data obtained by the adjustment unit completely covers the parameters of each stage of the headlight adjustment process, avoiding adjustment errors caused by data omissions.

[0009] The above-described method for adjusting a forward-looking adjustable automotive headlight involves an adjustment unit acquiring the headlight position, headlight type, and forward-looking adjustable headlight algorithm of the vehicle under test. Based on this algorithm, a movable target trajectory is set, and theoretical standard adjustment data of the forward-looking adjustable automotive headlight on the preset movable target trajectory is obtained through simulation. This method allows for flexible adjustment of adjustment requirements according to different vehicle models and headlight parameters, adapting to the adjustment of various types of forward-looking adjustable automotive headlights, and effectively improving the applicability and detection accuracy of the adjustment method.

[0010] The above-described method for adjusting automotive headlights with forward-looking detection involves a debugging unit that constructs at least ten predetermined movement trajectories for movable targets under different operating conditions, based on the headlight positions, headlight types, and forward-looking detection adjustment algorithms for different vehicle models. This covers headlight adjustment conditions under various usage scenarios. Through repeated tests with multiple trajectories and operating conditions, the accuracy and stability of the headlight adjustment logic are fully verified, avoiding the problem of adjustment deviations occurring during actual driving even though the headlights are successfully adjusted under a single operating condition. This further improves the reliability of the debugging results.

[0011] In the above-described method for adjusting a forward-looking, adjustable car headlight, the predetermined target in step seven is 3%.

[0012] The above-described method for adjusting a forward-looking adjustable automotive headlight involves the following correction operation for the control system: adjusting the position compensation coefficient and motor action response parameters in the headlight forward-looking adjustment algorithm without changing the overall logical framework of the original adjustment algorithm. After each correction, only the updated parameters are used to conduct the next round of testing. Errors are gradually eliminated through iterative calibration, ultimately ensuring that the accuracy of the headlight forward-looking adjustment meets the design requirements.

[0013] The advantages of this invention are: by setting predetermined movement trajectories for various movable targets and conducting multiple tests, this invention can simulate the adjustable headlights of different car models, ensuring the accuracy of the debugging results; simultaneously, this invention collects headlight illumination position recognition data and adjustment motor action parameter data, avoiding errors caused by incomplete data collection and effectively improving the accuracy of the debugging results; this invention can flexibly adjust the debugging scheme according to different car models and different parameters of adjustable headlights, which is suitable for factory calibration and debugging before mass production of new cars, and can also meet the parameter re-inspection and adjustment needs after after-sales maintenance, effectively ensuring adjustment accuracy. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a flowchart of the present invention. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] like Figure 1 As shown, a method for adjusting a car headlight with forward-looking detection includes the following steps: Step 1: Move the vehicle to be tested onto the test platform and secure it. Step 2: Turn on the car lights that can be adjusted with forward-looking detection; Step 3: Set up a movable target in front of the car headlights, which are adjustable for forward-looking detection; Step 4: Connect the detection module to the control system of the car lights that can be adjusted by forward-looking detection; Step 5: The debugging unit controls the movable target to move along a predetermined trajectory, and the detection module acquires the adjustment data of the car lights that can be adjusted in front of the camera in real time. Step Six: After conducting multiple tests, compare the obtained adjustment data of the forward-looking adjustable car headlights with the theoretical standard adjustment data; Step 7: If the error is less than the predetermined target, no adjustment is needed. If the error is greater than or equal to the predetermined target, the control system of the forward-looking and adjustable car lights needs to be corrected, and the test should be repeated until the error is less than the predetermined target.

[0018] Specifically, in step one of this embodiment, before the vehicle under test is moved to the test platform, the tire pressure, suspension height, and vehicle posture are pre-checked. After verification, the vehicle is moved to the test platform, and the four positioning points of the vehicle chassis are locked and fixed by limiting clamps to prevent displacement or posture deviation of the vehicle under test during the debugging process, thus ensuring the accuracy of the test data. This invention... Specifically, in step two of this embodiment, the car lights that can be adjusted by forward-looking detection are turned on for 30-50 seconds before proceeding with subsequent operations.

[0019] More specifically, the movable target described in this embodiment can be selected with target moving blocks of different areas and shapes according to the test conditions. A target moving module is set on the test platform. The target moving module can drive the target to move along the horizontal and vertical dimensions according to the path instructions sent by the debugging unit, so as to provide a stable position reference for adjusting the illumination angle of the vehicle headlights.

[0020] More specifically, the detection module described in this embodiment collects the headlight illumination position recognition data output by the forward-looking detection unit and the headlight adjustment motor action parameters output by the control system. After integrating the two types of data, it packages and transmits them to the debugging unit to ensure that the adjustment data obtained by the debugging unit completely covers the parameters of each stage of the headlight adjustment process, avoiding debugging errors caused by data omission.

[0021] Furthermore, the debugging unit described in this embodiment acquires the position of the headlights of the vehicle under test, as well as the type of headlights and the forward-looking detection and adjustment algorithm of the headlights. Based on the forward-looking detection and adjustment algorithm of the headlights, it sets the movement trajectory of a movable target and obtains theoretical standard adjustment data of the forward-looking detection and adjustment vehicle headlights on the preset movable target movement trajectory through simulation. It can flexibly adjust the debugging requirements according to different vehicle models and different headlight parameters, adapt to the debugging operations of various types of forward-looking detection and adjustment vehicle headlights, and effectively improve the applicability and detection accuracy of the debugging method.

[0022] Furthermore, the debugging unit described in this embodiment constructs at least ten predetermined movement trajectories of movable targets under different working conditions based on the headlight positions, headlight types, and forward-looking detection and adjustment algorithms of different vehicle models. This covers headlight adjustment working conditions under different usage scenarios. Through repeated tests of multiple trajectories and multiple working conditions, the accuracy and stability of the headlight adjustment logic are fully verified, avoiding the problem of adjustment deviations occurring in actual driving use despite passing debugging under a single working condition, thus further improving the reliability of the debugging results.

[0023] Furthermore, the predetermined target in step seven of this embodiment is 3%.

[0024] Furthermore, the correction operation of the forward-looking detection and adjustment vehicle headlight control system described in this embodiment is as follows: the position compensation coefficient and the motor action response parameters in the forward-looking adjustment algorithm of the headlight are adjusted without changing the overall logical framework of the original adjustment algorithm. After each correction, only the updated parameters are used to carry out the next round of testing. Errors are gradually eliminated through iterative calibration, and finally the accuracy of the forward-looking detection and adjustment of the headlight meets the design requirements.

[0025] This invention can generate suitable debugging schemes for forward-looking adjustable headlights of different models and specifications, without requiring the development of dedicated debugging procedures for specific models. It offers high operational flexibility and low debugging costs. Compared to traditional single-condition debugging methods, this method constructs at least ten test tracks under different conditions, fully covering scenarios involving changes in obstacle positions that may be encountered during actual vehicle operation. This allows for the early detection of deviations in control system parameters, avoiding the problem of laboratory-tested systems failing to meet actual usage standards.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for adjusting automotive headlights with forward-looking detection, characterized in that: Includes the following steps: Step 1: Move the vehicle to be tested onto the test platform and secure it. Step 2: Turn on the car lights that can be adjusted with forward-looking detection; Step 3: Set up a movable target in front of the car headlights, which are adjustable for forward-looking detection; Step 4: Connect the detection module to the control system of the car lights that can be adjusted by forward-looking detection; Step 5: The debugging unit controls the movable target to move along a predetermined trajectory, and the detection module acquires the adjustment data of the car lights that can be adjusted in front of the camera in real time. Step Six: After conducting multiple tests, compare the obtained adjustment data of the forward-looking adjustable car headlights with the theoretical standard adjustment data; Step 7: If the error is less than the predetermined target, no adjustment is needed. If the error is greater than or equal to the predetermined target, the control system of the forward-looking and adjustable car lights needs to be corrected, and the test should be repeated until the error is less than the predetermined target.

2. The adjustment method for a forward-looking, adjustable automotive headlight according to claim 1, characterized in that: Before the vehicle to be tested is moved to the test platform in step one, the tire pressure, suspension height and body posture of the vehicle are pre-checked. After the check is correct, the vehicle is moved to the test platform and the four positioning points of the vehicle chassis are locked and fixed by the limiting clamps.

3. The adjustment method for a forward-looking, adjustable automotive headlight according to claim 1, characterized in that: In step two, the car lights that can be adjusted by forward vision detection should be turned on for 30-50 seconds before proceeding with subsequent operations.

4. The adjustment method for a forward-looking, adjustable automotive headlight according to claim 1, characterized in that: The movable target can be selected with target moving blocks of different areas and shapes according to the test conditions. The test platform is equipped with a target moving module, which can drive the target to move along the horizontal and vertical dimensions according to the path instructions sent by the debugging unit.

5. The adjustment method for a forward-looking, adjustable automotive headlight according to claim 1, characterized in that: The detection module collects headlight illumination position recognition data output by the forward-looking detection unit and headlight adjustment motor action parameters output by the control system, integrates the two types of data, packages them, and transmits them to the debugging unit.

6. The adjustment method for a forward-looking, adjustable automotive headlight according to claim 1, characterized in that: The debugging unit acquires the headlight position, headlight type, and forward-looking detection and adjustment algorithm of the vehicle under test. Based on the forward-looking detection and adjustment algorithm, it sets the moving trajectory of the movable target and obtains the theoretical standard adjustment data of the forward-looking adjustable car headlights on the preset moving trajectory of the movable target through simulation.

7. The adjustment method for a forward-looking, adjustable automotive headlight according to claim 1, characterized in that: The debugging unit constructs at least ten predetermined movement trajectories for movable targets under different working conditions based on the headlight positions, headlight types, and forward-looking detection and adjustment algorithms of different vehicle models.

8. The adjustment method for a forward-looking, adjustable automotive headlight according to claim 1, characterized in that: The predetermined target in step seven is 3%.

9. The adjustment method for a forward-looking, adjustable automotive headlight according to claim 1, characterized in that: The correction operation of the control system for the forward-looking and adjustable automotive headlights is as follows: the position compensation coefficient and the motor action response parameters in the forward-looking adjustment algorithm of the headlights are adjusted without changing the overall logical framework of the original adjustment algorithm. After each correction, only the updated parameters are used to carry out the next round of testing.

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