Device and method for automatically calibrating angle of ADB partition of headlamp

Abstract

The invention discloses a device and method for automatically calibrating the angle of an ADB partition of a headlamp, the device comprises a communication module, a control module and an execution module, and the communication module comprises a photometric screen communication module and a headlamp communication module. According to the invention, full-automatic ADB function partition range calibration is realized, operation errors caused by manual calibration are avoided, and the calibration accuracy is improved; according to the control module, the angle error of the optical center of the whole headlamp is preferentially eliminated, then the partition errors on the two sides are gradually eliminated, and the overall lamplight angle deviation of the headlamp is controlled within a small range; according to the invention, each partition of the high beam can be accurately calibrated, and the anti-dazzling function of the ADB system is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle lamp control, and in particular relates to a device and a method for automatically calibrating the ADB partition angle of a headlamp. Background Art

[0002] At night or in tunnels with insufficient lighting, drivers tend to turn on high beams to meet their vision needs, and the vehicle ahead may be affected by the high beams, which may cause safety hazards. At this time, the ADB (Adaptive Driving Beam) device can ensure the driver's vision while reducing the impact on the vehicle ahead when the high beams are turned on.

[0003] In the prior art, ADB devices often use matrix LED headlights, which divide the high beam area and control the lighting or extinguishing of each area by LEDs to achieve the effect of adaptively extinguishing the high beam. When dividing the light area in the design stage, the projection angle range of each area can be accurately calculated.

[0004] However, in actual product manufacturing, the projection angle range of each partition depends on the lens processing accuracy and LED patch error control, so the actual projection angle range of each partition deviates from the design value. Severe partition deviation will cause ADB to identify the wrong area, and fail to achieve the effect of avoiding dazzle for the driver of the vehicle ahead. Summary of the invention

[0005] The purpose of the present invention is to provide a device for automatically calibrating the ADB partition angle of a headlight to solve the problems raised in the above background technology. The device for automatically calibrating the ADB partition angle of a headlight provided by the present invention has the characteristics of being able to accurately calibrate each partition of the high beam lamp and realize the anti-glare function of the ADB device.

[0006] Another object of the present invention is to provide a method for automatically calibrating the ADB partition angle of a headlight.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for automatically calibrating the ADB partition angles of headlights, comprising a communication module, a control module and an execution module, wherein the communication module comprises a light metering screen communication module and a headlight communication module, the light metering screen communication module is used to obtain the angle data of the actual illumination of the headlight, the headlight communication module is used to obtain the expected partition angle data of the headlight, transmit the partition calibration sequence and flash the calibration results; the control module is used to determine the partition calibration sequence of the headlight during the calibration process; the execution module is used to determine whether the angle deviation of the actual partition exceeds the angle of the expected partition.

[0008] Furthermore, in the present invention, the light metering screen communication module is connected to the light metering screen signal to obtain the angle data of the illumination in the actual partition of the headlight.

[0009] Furthermore, in the present invention, the light metering screen communication module is also connected to the execution module signal to transmit the angle data of the illumination in the actual partition of the headlight to the execution module.

[0010] Furthermore, in the present invention, the headlight communication module is connected to the OBD of the headlight to obtain the expected partition angle data of the headlight.

[0011] Furthermore, in the present invention, the headlight communication module is also connected to the control module signal to transmit the expected partition angle data of the headlight to the control module, and transmit the partition calibration sequence determined by the control module to the headlight controller.

[0012] Furthermore, in the present invention, the headlight communication module is also connected to the execution module signal, and the difference structure of all partition angles is generated into a configuration file and written into the headlight controller.

[0013] In the present invention, the method for automatically calibrating the ADB partition angle of the headlight further comprises the following steps:

[0014] S1, the headlight communication module is connected to the OBD of the headlight, obtains the expected partition angle data of the headlight, and transmits the data to the control module;

[0015] S2, the control module determines the partition calibration order, and then the headlight communication module communicates with the headlight controller via the OBD via the Gateway, and transmits the partition calibration order to the headlight controller;

[0016] S3, the light metering screen communication module is connected to the light metering screen signal to obtain the angle data of the headlight in the actual partition, and transmit the angle data of the headlight in the actual partition to the execution module;

[0017] S4, the execution module determines whether the actual partition angle deviation exceeds ±0.1° of the expected partition angle;

[0018] S5. If yes, record the corresponding position deviation angle; if no, record the corresponding deviation angle as 0;

[0019] S6. The headlight communication module generates a configuration file based on the difference results of all partition angles, connects to Gateway via OBD through SBL, and writes the configuration file into the headlight controller.

[0020] In the present invention, further, in step S2, the partition calibration order is to diffuse from the optical center point to both sides.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention realizes fully automatic ADB function partition range calibration, avoids operational errors caused by manual calibration, and improves calibration accuracy.

[0023] 2. The control module of the present invention is used to determine the calibration order of the headlight partitions during the calibration process, and adopts the method of first eliminating the angle error of the optical center of the whole light, and then gradually eliminating the errors of the partitions on both sides, so as to control the overall light angle deviation of the headlight within a smaller range.

[0024] 3. The present invention realizes communication with the headlight controller through the headlight communication module, realizes the acquisition of the expected partition angle data of the headlight, the transmission of the partition calibration sequence, and the generation of a configuration file with the difference results of all partition angles, and writes it into the headlight controller.

[0025] 4. The present invention communicates with the light metering screen through the light metering screen communication module, and can obtain the angle data of the headlight in the actual partition.

[0026] 5. The execution module of the present invention can compare the actual partition angle of the whole vehicle ADB function with the expected partition angle of the whole vehicle ADB function to generate a partition difference result.

[0027] 6. The present invention can accurately calibrate each partition of the high beam lamp to achieve the anti-glare function of the ADB system. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the process of the present invention.

[0029] Figure 2 Schematic diagram of the test scenario of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1

[0032] See also Figure 1-Figure 2The present invention provides the following technical solutions: a device for automatically calibrating the ADB partition angle of a headlamp, comprising a communication module, a control module and an execution module, wherein the communication module comprises a light metering screen communication module and a headlamp communication module, the light metering screen communication module is used to obtain the angle data of the actual irradiation of the headlamp, the headlamp communication module is used to obtain the expected partition angle data of the headlamp, transmit the partition calibration sequence and flash the calibration result; the control module is used to determine the partition calibration sequence of the headlamp during the calibration process; the execution module is used to determine whether the angle deviation of the actual partition exceeds the angle of the expected partition.

[0033] Specifically, the light metering screen communication module is connected to the light metering screen signal to obtain the angle data of the headlight in the actual partition.

[0034] Specifically, the light metering screen communication module is also connected to the execution module signal to transmit the angle data of the headlight in the actual partition to the execution module.

[0035] Specifically, the headlight communication module is connected to the OBD (On-Board Diagnostics) of the headlight to obtain the expected partition angle data of the headlight.

[0036] Specifically, the headlight communication module is also connected to the control module signal to transmit the expected partition angle data of the headlight to the control module, and transmit the partition calibration sequence determined by the control module to the headlight controller.

[0037] Specifically, the headlight communication module is also connected to the execution module signal, and generates a configuration file with the difference structure of all partition angles and writes it into the headlight controller.

[0038] Example 2

[0039] Specifically, combined with the conventional customer requirements for the high beam light type, taking the optical partition design of the left light of the ADB system as an example, the following steps are included:

[0040] S1. The headlight communication module is connected to the OBD of the headlight to obtain the left and right angle ranges corresponding to the left light partitions. The left and right angle ranges corresponding to the left light partitions are: Partition 1: [-21.1°~-12.85°], Partition 2: [-19.45°~-10.8°], Partition 3: [-14.7°~-8.98°], Partition 4: [-12.84°~-6.9°], Partition 5: [-10.8°~-4.82°], Partition 6: [-8.91°~-2.78°], Partition 7: [-7.05°~-0.85°], Partition 8: [-5.19°~1.10°], Partition 9: [-3.12°~3.12°], Partition 10: [-1.05°~5.12°], Partition 11: [1.03°~-9.90°], Partition 12: [3.00°~-14.65°]. The upper and lower angle ranges corresponding to all partitions are: [-2.1°~6.2°]. The headlight communication module transmits this data to the control module;

[0041] S2. The control module uses zone 9: [-3.12°~3.12°] as the first zone to be calibrated, and then diffuses the zones from zone 9 to the left and right. The headlight communication module communicates with the headlight controller via OBD via Gateway, and transmits the zone calibration sequence to the headlight controller.

[0042] S3, when calibrating the left light partition 9, the light metering screen communication module obtains the projection angle of the actual partition in the light metering screen and transmits it to the execution module;

[0043] S4, the execution module determines whether the actual partition angle deviation exceeds ±0.1° of the expected partition angle;

[0044] S5. If yes, record the corresponding position deviation angle; if no, record the corresponding deviation angle as 0;

[0045] S6. Calibrate the light angles of other partitions in turn. The headlight communication module generates a configuration file based on the difference results of all partition angles. The configuration file is written into the headlight controller through SBL (Secondary Bootloader, which has been disclosed in a method for refreshing a vehicle controller disclosed in Chinese patent application No. 201310344675.3 and is responsible for reading data from a storage medium and loading it into a memory for execution) connected to Gateway via OBD.

[0046] Example 3

[0047] Furthermore, in the present invention, the method for automatically calibrating the ADB partition angle of the headlight comprises the following steps:

[0048] S1, the headlight communication module is connected to the OBD of the headlight, obtains the expected partition angle data of the headlight, and transmits the data to the control module;

[0049] S2, the control module determines the partition calibration order, and then the headlight communication module communicates with the headlight controller via the OBD via the Gateway, and transmits the partition calibration order to the headlight controller;

[0050] S3, the light metering screen communication module is connected to the light metering screen signal to obtain the angle data of the headlight in the actual partition, and transmit the angle data of the headlight in the actual partition to the execution module;

[0051] S4, the execution module determines whether the actual partition angle deviation exceeds ±0.1° of the expected partition angle;

[0052] S5. If yes, record the corresponding position deviation angle; if no, record the corresponding deviation angle as 0;

[0053] S6. The headlight communication module generates a configuration file based on the difference results of all partition angles, connects to Gateway via OBD through SBL, and writes the configuration file into the headlight controller.

[0054] The main chip model of the light metering screen communication module in the present invention is CC2430; the main chip model of the execution module and the control module is FS32K146HAT0MLL; the main chip model of the headlight communication module is CA-IF1043DF-Q1.

[0055] Specifically, in step S2, the partition calibration order is to diffuse from the optical center point to both sides.

[0056] In summary, the present invention realizes the full-automatic ADB function partition range calibration, avoids the operational errors caused by manual calibration, and improves the accuracy of calibration; the control module of the present invention adopts the method of preferentially eliminating the angle error of the optical center of the whole light, and then gradually eliminating the partition errors on both sides, so as to control the overall light angle deviation of the headlamp within a smaller range; the present invention can accurately calibrate each partition of the high beam, and realize the anti-glare function of the ADB system.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for automatically calibrating the ADB partition angle of a headlight, characterized by: It includes a communication module, a control module and an execution module, wherein: The communication module includes a light metering screen communication module and a headlight communication module. The light metering screen communication module is used to obtain the actual irradiation angle data of the headlight. The headlight communication module is used to obtain the expected partition angle data of the headlight, transmit the partition calibration sequence, and flash the calibration result. The control module is used to determine the calibration order of the headlight partitions during the calibration process; The execution module is used to determine whether the angle deviation of the actual partition exceeds the angle of the expected partition.

2. The device for automatically calibrating the ADB partition angle of a headlight according to claim 1, characterized in that: The light metering screen communication module is connected to the light metering screen signal to obtain the angle data of the headlight in the actual partition.

3. The device for automatically calibrating the ADB partition angle of a headlight according to claim 2, characterized in that: The light metering screen communication module is also connected to the execution module signal to transmit the angle data of the actual illumination of the headlight partition to the execution module.

4. The device for automatically calibrating the ADB partition angle of a headlight according to claim 1, characterized in that: The headlight communication module is connected to the OBD of the headlight to obtain the expected partition angle data of the headlight.

5. The device for automatically calibrating the ADB partition angle of a headlight according to claim 4, characterized in that: The headlight communication module is also connected to the control module signal to transmit the expected partition angle data of the headlight to the control module, and transmit the partition calibration sequence determined by the control module to the headlight controller.

6. The device for automatically calibrating the ADB partition angle of a headlight according to claim 4, characterized in that: The headlight communication module is also connected to the execution module signal to generate a configuration file of the difference structure of all partition angles and write it into the headlight controller.

7. A method for implementing a device for automatically calibrating the ADB partition angle of a headlight according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, the headlight communication module is connected to the OBD of the headlight, obtains the expected partition angle data of the headlight, and transmits the data to the control module; S2, the control module determines the partition calibration sequence, and transmits the partition calibration sequence to the headlamp controller through the headlamp communication module; S3, the light metering screen communication module is connected to the light metering screen signal to obtain the angle data of the headlight in the actual partition, and transmit the angle data of the headlight in the actual partition to the execution module; S4, the execution module determines whether the actual partition angle deviation exceeds ±0.1° of the expected partition angle; S5. If yes, record the corresponding position deviation angle; if no, record the corresponding deviation angle as 0; S6. The headlight communication module generates a configuration file based on the difference results of all partition angles and writes the configuration file into the headlight controller.

8. The method for implementing the device for automatically calibrating the ADB partition angle of a headlight according to claim 7, characterized in that: In S2, the headlight communication module communicates with the headlight controller via the OBD via the Gateway.

9. The method for implementing the device for automatically calibrating the ADB partition angle of a headlight according to claim 7, characterized in that: In S2, the partition calibration order is to diffuse from the optical center point to both sides.

10. The method for implementing the device for automatically calibrating the ADB partition angle of a headlight according to claim 7, characterized in that: In S6, the headlight communication module is connected to the Gateway via the SBL via the OBD, and the configuration file is written into the headlight controller.

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