EP4347313A1 - Verfahren zur anpassung eines scheinwerfersystems - Google Patents
Verfahren zur anpassung eines scheinwerfersystemsInfo
- Publication number
- EP4347313A1 EP4347313A1 EP22719269.7A EP22719269A EP4347313A1 EP 4347313 A1 EP4347313 A1 EP 4347313A1 EP 22719269 A EP22719269 A EP 22719269A EP 4347313 A1 EP4347313 A1 EP 4347313A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- motor vehicle
- headlight system
- low beam
- adjusting
- line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- B60Q1/085—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 special conditions, e.g. adverse weather, type of road, badly illuminated road signs or potential dangers
-
- 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
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/30—Indexing codes relating to the vehicle environment
- B60Q2300/32—Road surface or travel path
- B60Q2300/324—Road inclination, e.g. uphill or downhill
Definitions
- the invention relates to a method for adjusting an automated headlight system of a motor vehicle, the headlight system having at least two headlights for generating low beams and a control unit for adjusting a lower cut-off line of the low beams.
- the invention also relates to the automated headlight system for the motor vehicle.
- an automated or adaptive headlight system with headlights for generating low beams can and is often used.
- the headlight system can use camera-supported lane recognition to determine the course of the road and, based on this, adapt the low beam to the course of the road by means of a mechanism or a servomotor in the headlights.
- the headlight system is designed to steer and can adjust the low beam horizontally to the road.
- a vertical adjustment of the low beam of the headlights can be carried out in the same way with the aid of a camera, in that a light-dark boundary of the low beam is adjusted to object boundaries - for example to vehicles driving in front.
- a steep incline of the roadway cannot be detected here.
- the headlight system would illuminate the sky when driving over hilltops, since the camera cannot cover or detect the incline of the road.
- Steering sensor-assisted headlight systems are also known from the prior art.
- the steering sensor-assisted headlight system the incline of the roadway is evaluated by a steering angle sensor in a steering column and the headlight or low beam is adapted to the situation.
- the steering sensor-assisted headlight system does not allow predictive adjustment of the headlights, since an input from the steering angle sensor is required for the adjustment.
- only the Movement around the Z-axis of the motor vehicle is evaluated and therefore no adjustment with regard to the pitching moment can be taken into account.
- headlight systems with a perceptual adjustment of the headlights.
- Approaches for the situational adaptation of the low beam to the incline of the road are known, which are based, for example, on lane detection or free space detection.
- radar and lidar systems are provided for adjusting the low beam to the slope of the road.
- sensors are used to determine the surroundings of the motor vehicle.
- FOVs Field Of View
- DE 102018100738 A1 discloses a method in which the range of headlights is determined from a 3D profile of the roadway.
- the 3D profile is created with the vehicle, whereby patterns are projected onto the road with the headlights and recorded with a camera.
- the 3D profile of the road ahead can be determined from a distortion of the pattern and the headlights can be controlled accordingly.
- DE 102018219604 A1 discloses a method in which headlights are adjusted vertically to the course of the roadway. Information about the road topography from a digital map is used for the adjustment.
- DE 102017005019 A1 discloses a method in which a pitching movement of the motor vehicle can be detected and a change in a light-dark boundary caused by this can be compensated for.
- DE 102014225513 A1 discloses a method in which headlights are controlled depending on a calculated visual range difference for the low beam and the high beam. Topography data can be used to calculate the difference in visibility.
- the object of the invention is therefore to provide an improved or at least alternative method for adjusting an automated headlight system and an improved or at least alternative embodiment of the automated headlight system, in which the disadvantages described are overcome. According to the invention, this object is achieved by the subject matter of the independent claims. Advantageous embodiments are the subject matter of the dependent claims.
- a method according to the invention is provided for adapting an automated headlight system of a motor vehicle.
- the headlight system has at least two headlights for generating low beams and a control unit for adjusting a lower cut-off line of the low beams.
- an elevation gradient of an upcoming route of the motor vehicle is first calculated from an excerpt of a digital elevation model by means of a mapping.
- two next turning points that lie ahead and lead to the tilting of the motor vehicle about the Y-axis of the motor vehicle are then determined from the elevation gradient.
- a mean path position is then determined and characterized, starting from the two next turning points ahead.
- the lower cut-off line of the low beam of the headlight system is then adjusted to a center point of the central track position at least when the first turning point ahead is reached.
- the digital elevation model (DEM) or a digital terrain model (DGM) is used in the method according to the invention.
- the headlights of the headlight system and therefore the low beam can be predicatively and situationally adapted to the tilting of the motor vehicle about the Y-axis when passing the first turning point to be passed through.
- the elevation gradient and the average orbital position can be calculated or determined before the first turning point to be traveled through is reached.
- the lower cut-off line of the low beam can therefore be adjusted quickly, at least when the first turning point ahead is reached, and the road ahead can be adequately illuminated when passing or driving over the first turning point to be passed.
- the turning point can be formed, for example, by a mountain top or a mountain ridge or a mountain gully or a mountain dome.
- the digital elevation model or the digital terrain model is used in the method according to the invention.
- the digital elevation model includes data that depict a three-dimensional topography worldwide with an accuracy of less than 10 cm.
- the digital elevation model is generated cyclically - for example once a day - by satellite-supported systems. This can do that Methods according to the invention can be used for any country.
- the method according to the invention is independent of the weather and cloud situation and generally of lighting conditions in the area surrounding the motor vehicle.
- the method is independent of calibration errors - such as extrinsic and/or intrinsic deviations in optical sensors - and does not require recalibration of the headlight system.
- the method according to the invention is also independent of the equipment of the motor vehicle and does not require a special set of sensors.
- the method according to the invention increases driving comfort and driving safety through a situational and predictive adaptation of the cut-off line of the low beam of the headlight system.
- the digital elevation model or the digital terrain model is used in the method.
- GPS Global Positioning System
- GCP Ground Control Point
- SAR Synthetic Aperture Radar
- the mean path position when determining the mean path position, this is determined by an intersection analysis.
- the mean track position can be determined as a straight line that runs through the two next turning points ahead. Provision can advantageously be made for an angle of inclination of the web position to the horizontal or to the vertical to be determined when characterizing the middle web position.
- the inclination angle of the central web position is transmitted to the control unit of the headlight system.
- the lower cut-off line of the low beam of the headlight system is adjusted as a function of the inclination angle before reaching the first turning point to be passed or when reaching the first turning point to be passed.
- a functional graph can be provided for this purpose, which adapts the headlight of the headlight system and thereby the lower cut-off line of the low beam as a function of the angle of inclination.
- the motor vehicle is tilted sharply about the Y-axis when passing the first turning point to be passed, and the headlights can be preconditioned or prealigned before reaching the first turning point to be passed.
- the inertia of the motor system of the headlights can be taken into account.
- the preconditioning or the pre-alignment can be carried out in a short time interval before reaching or before passing the first turning point to be driven through in order not to adversely affect the illumination of the roadway before the first turning point to be driven through.
- the motor vehicle is tilted only slightly about the Y-axis when passing the first turning point to be passed, and the headlights can be aligned accordingly immediately when reaching or passing the first turning point to be passed.
- the preconditioning or the prealignment of the headlights can be dispensed with here.
- a frequency for calculating the mean orbit position is determined from this.
- the calculation can be calculated depending on the change profile of the route ahead. If the route ahead has several turning points that cause tilting around the Y-axis, the mean track position is calculated at a higher frequency. If the route ahead has few turning points that cause tilting around the Y-axis, the mean track position is calculated at a lower frequency. This is the case, for example, if the route leads over a monotonous or level stretch. For example, a Fourier transformation of the elevation gradient can be used to determine the frequency.
- the invention also relates to an automated headlight system for a motor vehicle.
- the headlight system has at least two headlights for generating low beams and a control unit for adjusting a lower cut-off line of the headlights on.
- the headlight system is designed to carry out the method described above.
- FIG. 1 shows a flow chart of a method according to the invention
- FIG. 1 shows a flow chart of a method 1 according to the invention.
- a digital elevation model 2 or a digital terrain model of an area surrounding a motor vehicle 3 is determined.
- the digital elevation model 2 is determined by means of a SAR survey.
- motor vehicle 3 is localized in a higher-level coordinate system.
- the motor vehicle 3 can be localized using an internal GPS system and/or a GCP system.
- a third step VS3 of the method 1 an excerpt 4 from the digital elevation model 2 of the surroundings of the motor vehicle 3 relating to an upcoming route 11 of the motor vehicle 3 is provided and downloaded.
- a fourth step VS4 of the method 1 an elevation gradient 5 of an upcoming route of the motor vehicle 3 is calculated from the excerpt 4 of the digital elevation model 2 by means of a mapping.
- the two next turning points 6a and 6b that are ahead and lead to the tilting of the motor vehicle 3 about the Y-axis of the motor vehicle 3 are determined from the elevation gradient 5.
- FIG. 5 shows the elevation gradient 5 calculated in step VS4 with the turning points 6a and 6b calculated in step VS4.
- a frequency is determined for calculating a mean path position 7.
- the frequency can be done, for example, by a Fourier transformation of the elevation gradient 5. If the route ahead has several turning points, then the mean orbit 7 is recalculated at a higher frequency. If the route ahead has few turning points, then the mean path position 7 is recalculated at a lower frequency.
- the mean web position 7 is determined and characterized starting from the turning points 6a and 6b .
- the middle web position 7 can be determined by an intersection analysis.
- the middle web position 7 can be determined as a continuous straight line through the turning points 6a and 6b.
- an angle of inclination of the middle web layer 7 to the horizontal and a center point 10 are calculated.
- the center point 10 can be calculated, for example, as an intersection of the mean lane position 7 and an actual lane position or an actual roadway. Alternatively, the center point 10 can be fixed centrally between the two turning points 6a and 6b.
- a seventh step VS7 of method 1 the angle of inclination of central web position 7 is transmitted to a control device of a headlight system 8 of motor vehicle 3 .
- a lower cut-off line 9 of the low beam of headlight system 8 is adjusted to center point 10 of middle web position 7 .
- the adaptation takes place as a function of the inclination angle of the central path position and in this exemplary embodiment already before the first turning point 6a ahead is reached.
- the second step VS2 is carried out after the eighth step VS8.
- the frequency from the fifth step VS5 determines how quickly after the eighth step VS8 there is a transition to the second step VS2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021002775.2A DE102021002775B3 (de) | 2021-05-28 | 2021-05-28 | Verfahren zur Anpassung eines Scheinwerfersystems |
| PCT/EP2022/058287 WO2022248105A1 (de) | 2021-05-28 | 2022-03-29 | Verfahren zur anpassung eines scheinwerfersystems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4347313A1 true EP4347313A1 (de) | 2024-04-10 |
Family
ID=81389132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22719269.7A Pending EP4347313A1 (de) | 2021-05-28 | 2022-03-29 | Verfahren zur anpassung eines scheinwerfersystems |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US12576775B2 (de) |
| EP (1) | EP4347313A1 (de) |
| JP (1) | JP7676590B2 (de) |
| KR (1) | KR102919547B1 (de) |
| CN (1) | CN117320920A (de) |
| DE (1) | DE102021002775B3 (de) |
| WO (1) | WO2022248105A1 (de) |
Family Cites Families (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3232608C2 (de) * | 1982-09-02 | 1984-08-16 | Ford-Werke AG, 5000 Köln | Scheinwerferbefestigung in Kraftfahrzeugen |
| FR2698833B1 (fr) * | 1992-12-03 | 1995-03-03 | Valeo Vision | Dispositif de correction automatique de l'orientation des projecteurs d'un véhicule automobile lors des variations d'assiette du véhicule. |
| DE19704466A1 (de) * | 1997-02-06 | 1998-08-13 | Bosch Gmbh Robert | Einrichtung zur Regelung der Leuchtweite von Scheinwerfern von Fahrzeugen |
| KR19990017901U (ko) * | 1997-11-04 | 1999-06-05 | 정몽규 | 헤드라이트의 조사방향 조절장치 |
| JP2001347882A (ja) * | 2000-04-03 | 2001-12-18 | Denso Corp | 車両用前照灯光軸方向自動調整装置 |
| KR200412131Y1 (ko) | 2005-12-23 | 2006-03-23 | 대성전기공업 주식회사 | 차량용 전조등 조사각도 조절장치 |
| JP4635263B2 (ja) * | 2007-01-19 | 2011-02-23 | 国立大学法人北海道大学 | 前照灯照射角度制御システム |
| DE102007010273A1 (de) * | 2007-03-02 | 2008-09-04 | Hella Kgaa Hueck & Co. | Verfahren und Vorrichtung zum Steuern der Lichtabgabe eines Fahrzeugs abhängig vom Verlauf einer Fahrbahn |
| US7611266B2 (en) * | 2007-03-27 | 2009-11-03 | Visteon Global Technologies, Inc. | Single path road geometry predictive adaptive front lighting algorithm using vehicle positioning and map data |
| DE102009045321A1 (de) * | 2009-10-05 | 2011-04-07 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Regulierung der Leuchtweite eines Fahrzeugscheinwerfers |
| DE102009054238A1 (de) * | 2009-11-21 | 2011-05-26 | Volkswagen Ag | Verfahren zum Steuern einer Scheinwerferanordnung für ein Fahrzeug und Scheinwerferanordnung |
| DE102011081395A1 (de) * | 2011-08-23 | 2013-02-28 | Robert Bosch Gmbh | Verfahren und Steuergerät zur Einstellung einer Leuchtweite eines Scheinwerfers eines Fahrzeugs |
| DE102012216088A1 (de) * | 2012-09-11 | 2014-03-13 | Robert Bosch Gmbh | Verfahren sowie Auswerte- und Steuereinheit zum Anpassen einer Scheinwerferstrahlgrenze eines Scheinwerferkegels |
| JP2015151046A (ja) * | 2014-02-17 | 2015-08-24 | 株式会社デンソー | 軸方向制御装置、および軸方向制御プログラム |
| DE102014225513B4 (de) | 2014-12-11 | 2026-03-19 | Robert Bosch Gmbh | Verfahren und Steuergerät zum Einstellen einer Charakteristik einer Lichtaussendung zumindest eines Scheinwerfers eines Fahrzeugs |
| KR101689081B1 (ko) * | 2015-06-11 | 2016-12-23 | 주식회사 아이비스 | 차량 제어시스템 및 방법 |
| DE102016004371A1 (de) | 2016-03-18 | 2017-02-09 | Daimler Ag | Verfahren zum Betrieb einer Beleuchtungsvorrichtung eines Fahrzeugs |
| KR101832967B1 (ko) * | 2016-05-16 | 2018-02-28 | 엘지전자 주식회사 | 차량에 구비된 제어장치 및 이의 제어방법 |
| JP6924615B2 (ja) | 2017-05-23 | 2021-08-25 | スタンレー電気株式会社 | 前照灯の光軸制御システム及び光軸制御方法、並びに車両、光軸制御プログラム |
| DE102017005019B4 (de) | 2017-05-26 | 2024-09-19 | Mercedes-Benz Group AG | Beleuchtungsvorrichtung und Verfahren zu deren Betrieb |
| DE102018200005B4 (de) * | 2018-01-02 | 2019-12-24 | Ford Global Technologies, Llc | Straßentopographieanpassung der Lampen eines Kraftfahrzeuges |
| DE102018100738A1 (de) | 2018-01-15 | 2019-07-18 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Selektive Merkmalsextraktion |
| DE102018219604A1 (de) | 2018-11-15 | 2020-05-20 | Robert Bosch Gmbh | Verfahren und Steuereinheit zum Einstellen einer Leuchtweite von zumindest einem Scheinwerfer eines Fahrzeugs |
| CN109737355A (zh) * | 2019-03-14 | 2019-05-10 | 华域视觉科技(上海)有限公司 | 自动调节高度的汽车大灯以及高度自动调节方法 |
| US20220324421A1 (en) * | 2020-12-23 | 2022-10-13 | ClearMotion, Inc. | Systems and methods for terrain-based insights for advanced driver assistance systems |
-
2021
- 2021-05-28 DE DE102021002775.2A patent/DE102021002775B3/de active Active
-
2022
- 2022-03-29 CN CN202280035936.0A patent/CN117320920A/zh active Pending
- 2022-03-29 EP EP22719269.7A patent/EP4347313A1/de active Pending
- 2022-03-29 US US18/564,230 patent/US12576775B2/en active Active
- 2022-03-29 KR KR1020237040165A patent/KR102919547B1/ko active Active
- 2022-03-29 WO PCT/EP2022/058287 patent/WO2022248105A1/de not_active Ceased
- 2022-03-29 JP JP2023572534A patent/JP7676590B2/ja active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022248105A1 (de) | 2022-12-01 |
| US12576775B2 (en) | 2026-03-17 |
| KR20230175273A (ko) | 2023-12-29 |
| JP7676590B2 (ja) | 2025-05-14 |
| KR102919547B1 (ko) | 2026-01-28 |
| JP2024519976A (ja) | 2024-05-21 |
| DE102021002775B3 (de) | 2022-08-04 |
| CN117320920A (zh) | 2023-12-29 |
| US20240239261A1 (en) | 2024-07-18 |
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