CN116194332A - Method for performing dynamic self-leveling of a motor vehicle lighting device and motor vehicle lighting arrangement - Google Patents
Method for performing dynamic self-leveling of a motor vehicle lighting device and motor vehicle lighting arrangement Download PDFInfo
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- CN116194332A CN116194332A CN202180065542.5A CN202180065542A CN116194332A CN 116194332 A CN116194332 A CN 116194332A CN 202180065542 A CN202180065542 A CN 202180065542A CN 116194332 A CN116194332 A CN 116194332A
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- control unit
- lighting device
- light pattern
- motor vehicle
- horizontal angle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
- B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
- B60Q1/10—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to vehicle inclination, e.g. due to load distribution
- B60Q1/115—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to vehicle inclination, e.g. due to load distribution by electric means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention provides a method for performing dynamic self-leveling of a motor vehicle lighting device (10), the method comprising the steps of: -providing the lighting device (10) configured to emit a light pattern having a horizontal angle (ha); providing a plurality of sensors (4, 5, 6), each configured to generate training data, and a control unit (3) configured to receive the training data; training the control unit to create a prediction rule for the horizontal angle from sensor data; -receiving real sensor data from the sensors (4, 5, 6); and comparing the real sensor data with the prediction rules to predict the horizontal angle of the lighting device to obtain an offset value. Finally, the position of the motor vehicle lighting device is corrected as a function of the offset value.
Description
Technical Field
The present invention relates to the field of automotive lighting devices and, more particularly, to improvements in safety considerations in such devices.
Background
The automotive lighting market may be considered one of the most competitive markets and new lighting functions are continually needed.
Some lighting modules need to provide more than one different function. To achieve this, there are many options on the market to combine the near-beam and far-beam functions.
Current devices need to provide leveling and aiming features to fine tune the beam and prevent glare. Furthermore, there is a need for a good adjustment of the light beam for a good operation of the smart function.
Current solutions involve mechanical sensors that sense the inclination of the vehicle and then adjust the inclination of the lighting device to compensate for this.
Disclosure of Invention
The present invention provides an alternative solution to this problem by a method for performing dynamic self-leveling of a motor vehicle lighting device, said method comprising the steps of:
-providing the lighting device configured to emit a light pattern having a horizontal angle;
-providing a plurality of sensors, each sensor being configured to generate training data, and a control unit configured to receive the training data;
-training the control unit to create prediction rules for the horizontal angle from sensor data;
-receiving real sensor data from the sensor;
-comparing the real sensor data with the prediction rules to predict the horizontal angle of the lighting device, resulting in an offset value; and
-correcting the light pattern of the motor vehicle lighting device in dependence of the offset value.
The method reduces the delay time in the response of the control unit, which is responsible for levelling the light pattern of the lighting device. Due to the intelligent training of the control unit, the method of the system can predict the orientation of the light pattern and can perform dynamic self-leveling and achieve correct aiming, compensating for static and dynamic loads affecting the headlight in order to maintain a certain reference.
In some particular embodiments, the light pattern is a high beam light pattern, a low beam light pattern, or a light condensing pattern (spot light pattern).
These types of projection are very common in current lighting devices and can be used with the method of the present invention.
In some particular embodiments, the plurality of sensors includes at least a gyroscope, a camera, and an accelerometer.
These sensors provide the control unit with valuable data suitable for training.
In some particular embodiments, the camera is an infrared camera. This helps the control unit to be able to receive accurate data even in low visibility conditions.
In some particular embodiments, the plurality of sensors includes at least one of a brake sensor, an accelerator sensor (accelerator sensor), and a steering sensor.
These sensors providing driver action information are also very valuable for the control unit to estimate the effect of the drive on the behavior of the vehicle.
In some particular embodiments, the step of training the control unit comprises the sub-steps of:
-providing the training data, the training data comprising a timing of data from different sensors;
-causing the control unit to calculate a first estimate of the horizontal angle based on the training data;
-testing the first estimate of the horizontal angle with a true value of the horizontal angle;
-performing a change in the timing of one of said sensors and repeating the steps of calculating an estimate and testing the estimate.
This way of training the control unit is useful in that it provides the control unit with the ability to anticipate the angle of the light pattern in an improved way.
In some particular embodiments, the step of training the control unit includes using a machine learning algorithm.
Once the corresponding result is verified, the value of the control unit is used for the corresponding step of the method of the invention.
In some particular embodiments, wherein the step of correcting the light pattern comprises modifying a position of the lighting device.
This is a typical way of correcting the pattern by tilting the lighting device to operate directly at a horizontal angle.
In some particular embodiments, the step of correcting the light pattern comprises modifying an illumination intensity of the illumination device.
This is an alternative way of adapting the light pattern, especially when the lighting device comprises a matrix arrangement of light pixels. Some of the light pixels may be dimmed or turned off, thereby simulating the effect of tilting the lighting device.
In other inventive aspects, the invention provides a data processing element comprising means for performing the steps of the method according to the first inventive aspect, and a computer program comprising instructions which, when the program is run by a control unit, cause the control unit to perform the steps of the method according to the first inventive aspect.
In other inventive aspects, the present invention provides an automotive lighting apparatus comprising:
-a motor vehicle lighting device;
-a gyroscope, a camera and an accelerometer, each configured to collect sensor data; and
-a control unit configured to receive the sensor data and to perform the steps of the method according to the first inventive aspect.
In some particular embodiments, the light source arrangement is a matrix arrangement comprising at least 2000 solid state light sources.
The term "solid state" refers to light emitted by a solid state electroluminescent that uses a semiconductor to convert electricity into light. The solid state lighting produces visible light with reduced heat generation and lower energy consumption compared to incandescent lighting. Solid state electronic lighting devices, which are generally of smaller mass, provide greater resistance to shock and vibration than fragile glass tubes/bulbs and elongated filaments. They also eliminate filament evaporation, potentially increasing the lifetime span of the irradiation device. Some examples of these types of illumination include semiconductor Light Emitting Diodes (LEDs), organic Light Emitting Diodes (OLEDs), or Polymer Light Emitting Diodes (PLEDs) as illumination sources, rather than electrical filaments, plasmas, or gases.
Unless otherwise defined, all terms (including technical and scientific terms) used herein should be interpreted according to the conventions of the art. It will be further understood that the terms "comprises" and "comprising," are also to be interpreted as referring to, and not in an idealized or overly formal sense unless expressly so defined herein.
In this document, the terms "comprises" and its derivatives (e.g., "comprising" etc.) are not to be construed in an exclusive sense, i.e., they are not to be construed to exclude the possibility that what is described and defined may include other elements, steps, etc.
Drawings
To complete the description and to provide a better understanding of the present invention, a set of drawings is provided. The accompanying drawings, which form a part hereof, and which illustrate embodiments of the present invention, are not to be construed as limiting the scope of the invention, but merely as examples of how the invention may be practiced.
The drawings include the following figures:
fig. 1 shows a general perspective view of a motor vehicle lighting device according to the invention.
Fig. 2a to 2c show the direction of the light pattern in different situations, wherein the horizontal angle ha of the light pattern may vary.
Where appropriate, elements of the example embodiments are denoted by the same reference numerals throughout the drawings and the detailed description:
1 head lamp
2LED
3 control unit
4 gyroscope
5 camera
6 accelerometer
100 motor vehicle
Detailed Description
The example embodiments are described in sufficient detail to enable those of ordinary skill in the art to embody and practice the systems and processes described herein. It is important to understand that the embodiments may be provided in many alternative forms and should not be construed as being limited to the examples set forth herein.
Accordingly, while the embodiments may be modified and take a variety of different alternative forms, specific embodiments thereof are shown in the drawings and will be described below in detail by way of example. It is not intended to be limited to the specific form disclosed. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the appended claims. Where considered appropriate, elements of the example embodiments are designated by the same reference numerals throughout the drawings and the detailed description.
Fig. 1 shows a general perspective view of a motor vehicle lighting device according to the invention.
The headlamp 1 is mounted in a motor vehicle 100, and includes:
-a matrix arrangement of LEDs 2 for providing a light pattern;
a control unit 3 for performing control of the operation of the LED 2; and
Although not shown in this figure, the system further includes a brake sensor, an accelerator sensor (accelerator sensor), and a steering sensor.
The matrix configuration is a high resolution module with a resolution of greater than 2000 pixels. However, there is no additional limitation on the technique used to produce the projection module.
Fig. 2a to 2c show the direction of the light pattern in different situations, wherein the horizontal angle ha of the light pattern may vary.
Fig. 2a shows a standard projection of a light pattern when the vehicle is in neutral. Fig. 2b shows the deviation of the horizontal angle when the vehicle experiences sudden acceleration, and fig. 2c shows the deviation of the horizontal angle when the vehicle experiences sudden braking.
These figures show only examples of different situations where the horizontal angle of the light pattern may change, which may cause glare (if the light pattern is tilted upwards) or visual discomfort (if the light pattern is tilted downwards).
The control unit has undergone a training process prior to its installation in the motor vehicle headlamp, which training process comprises some machine learning steps, wherein the control unit is trained with training data provided by a plurality of sensors.
The first training process is with respect to the identification of the location of the reference portion. The training process comprises the following steps:
-providing training data comprising a timing of data from different sensors (temporal succession);
-causing the control unit to calculate a first estimate of the horizontal angle based on the training data;
-testing the first estimate of the horizontal angle with a true value of the horizontal angle;
-performing a change in the timing of one of the sensors and repeating the steps of calculating an estimate and testing the estimate.
Once the training process is completed, a predictive rule is created and a control unit is installed in the motor vehicle 100 of fig. 1 to perform illumination control of the headlight 10. In any case, these training and testing procedures may also be performed during operation of the control unit, rather than prior to installation of the control unit.
When the control unit 3 is installed in a vehicle, the control unit 3 is adapted to predict and act on the light pattern according to the following steps:
-receiving real sensor data from a sensor;
-comparing the real sensor data with a prediction rule to predict a horizontal angle of the lighting device, resulting in an offset value; and
-correcting the light pattern of the motor vehicle lighting device in dependence on the offset value.
When the control unit detects an offset value, in a particular embodiment of the figure, the step of correcting the light pattern comprises modifying the illumination intensity of the lighting device, since the light module comprises a matrix arrangement of light pixels: some of the light pixels may be dimmed or turned off, thereby simulating the effect of tilting the lighting device.
Claims (13)
1. A method for performing dynamic self-leveling of a motor vehicle lighting device (10), the method comprising the steps of:
-providing the lighting device (10), the lighting device (10) being configured to emit a light pattern having a horizontal angle (ha);
-providing a plurality of sensors (4, 5, 6) each configured to generate training data and a control unit (3), the control unit (3) being configured to receive the training data;
-training the control unit to create prediction rules for the horizontal angle from sensor data;
-receiving real sensor data from the sensors (4, 5, 6);
-comparing the real sensor data with the prediction rules to predict the horizontal angle of the lighting device, resulting in an offset value; and
-correcting the light pattern of the motor vehicle lighting device (10) depending on the offset value.
2. The method of claim 1, wherein the light pattern is a high beam light pattern, a low beam light pattern, or a concentrated light pattern.
3. The method according to any of the preceding claims, wherein the plurality of sensors comprises at least a gyroscope (4), a camera (5) and an accelerometer (6).
4. A method according to claim 3, wherein the camera is an infrared camera.
5. The method of any of the preceding claims, wherein the plurality of sensors includes at least one of a brake sensor, an accelerator sensor, and a steering sensor.
6. A method according to any of the preceding claims, wherein the step of training the control unit comprises the sub-steps of:
-providing the training data, the training data comprising a timing of data from different sensors;
-causing the control unit to calculate a first estimate of the horizontal angle based on the training data;
-testing the first estimate of the horizontal angle with a true value of the horizontal angle;
-performing a change in the timing of one of said sensors and repeating the steps of calculating an estimate and testing the estimate.
7. The method of claim 6, wherein training the control unit comprises using a machine learning algorithm.
8. A method according to any of the preceding claims, wherein the step of correcting the light pattern comprises modifying the position of the lighting device.
9. A method according to any of the preceding claims, wherein the step of correcting the light pattern comprises modifying the illumination intensity of the illumination device.
10. A data processing element comprising means for performing the steps of the method according to any of the preceding claims.
11. A computer program comprising instructions which, when the program is run by a control unit, cause the control unit to perform the steps of the method according to any one of claims 1 to 9.
12. A motor vehicle lighting arrangement comprising:
-a motor vehicle lighting device (10);
-a gyroscope (4), a camera (5) and an accelerometer (6), each configured to acquire sensor data; and
-a control unit (3), the control unit (3) being configured to receive the sensor data and to perform the steps of the method according to any one of claims 1 to 9.
13. Automotive lighting device (1) according to claim 12, wherein the light source arrangement is a matrix arrangement comprising at least 2000 solid state light sources (2).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2010590A FR3115245B1 (en) | 2020-10-15 | 2020-10-15 | Method for performing dynamic self-leveling of automotive lighting device and automotive lighting device |
| FRFR2010590 | 2020-10-15 | ||
| PCT/EP2021/078704 WO2022079295A1 (en) | 2020-10-15 | 2021-10-15 | Method for performing dynamic self-levelling of an automotive lighting device and automotive lighting arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116194332A true CN116194332A (en) | 2023-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180065542.5A Pending CN116194332A (en) | 2020-10-15 | 2021-10-15 | Method for performing dynamic self-leveling of a motor vehicle lighting device and motor vehicle lighting arrangement |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4228924A1 (en) |
| JP (1) | JP2023545526A (en) |
| CN (1) | CN116194332A (en) |
| FR (1) | FR3115245B1 (en) |
| WO (1) | WO2022079295A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19916175A1 (en) * | 1999-04-10 | 2000-10-12 | Bosch Gmbh Robert | Setting device for headlamp light beam has processor with monitor that evaluates information content of image from sensor, prevents further processing if information insufficient |
| GB201520877D0 (en) * | 2015-11-26 | 2016-01-13 | Johnson Electric Sa | Vehicular lighting assembly |
| US20190176684A1 (en) * | 2017-12-07 | 2019-06-13 | Uber Technologies, Inc. | Location Based Vehicle Headlight Control |
| CN111212756B (en) * | 2018-10-31 | 2023-10-17 | 深圳市大疆创新科技有限公司 | Method and apparatus for controlling an illumination system of a vehicle |
| EP3708427A1 (en) * | 2019-03-12 | 2020-09-16 | Veoneer Sweden AB | A headlight control system for a motor vehicle and a method of training a machine learning model for a headlight control system |
-
2020
- 2020-10-15 FR FR2010590A patent/FR3115245B1/en active Active
-
2021
- 2021-10-15 EP EP21794534.4A patent/EP4228924A1/en active Pending
- 2021-10-15 JP JP2023523107A patent/JP2023545526A/en active Pending
- 2021-10-15 CN CN202180065542.5A patent/CN116194332A/en active Pending
- 2021-10-15 WO PCT/EP2021/078704 patent/WO2022079295A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| FR3115245A1 (en) | 2022-04-22 |
| WO2022079295A1 (en) | 2022-04-21 |
| JP2023545526A (en) | 2023-10-30 |
| FR3115245B1 (en) | 2023-01-20 |
| EP4228924A1 (en) | 2023-08-23 |
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