WO2011110203A1 - Procédé d'ajustement et/ou d'étalonnage d'une unité optique d'un véhicule - Google Patents

Procédé d'ajustement et/ou d'étalonnage d'une unité optique d'un véhicule Download PDF

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Publication number
WO2011110203A1
WO2011110203A1 PCT/EP2010/007199 EP2010007199W WO2011110203A1 WO 2011110203 A1 WO2011110203 A1 WO 2011110203A1 EP 2010007199 W EP2010007199 W EP 2010007199W WO 2011110203 A1 WO2011110203 A1 WO 2011110203A1
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WO
WIPO (PCT)
Prior art keywords
light
target object
vehicle
unit
light distribution
Prior art date
Application number
PCT/EP2010/007199
Other languages
German (de)
English (en)
Inventor
Markus Thom
Matthias Serfling
Original Assignee
Daimler Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daimler Ag filed Critical Daimler Ag
Publication of WO2011110203A1 publication Critical patent/WO2011110203A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/02—Testing optical properties
    • G01M11/06—Testing the alignment of vehicle headlight devices
    • G01M11/064—Testing the alignment of vehicle headlight devices by using camera or other imaging system for the light analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/02—Testing optical properties
    • G01M11/06—Testing the alignment of vehicle headlight devices
    • G01M11/068—Testing the alignment of vehicle headlight devices with part of the measurements done from inside the vehicle

Definitions

  • the invention relates to a method for adjusting and / or calibrating at least one optical unit of a vehicle.
  • Illumination system on a motor vehicle in particular a headlight of the motor vehicle, known.
  • the arrangement comprises a device for detecting a traffic situation in front of the motor vehicle, an adjusting device and / or
  • the device for detecting the traffic situation in front of the motor vehicle is an image acquisition unit which is connected to an image evaluation device, so that images captured by the image acquisition unit can be fed to the image evaluation device and, on the basis of the acquired images, the adjustment device and / or switching device for the illumination system for adaptation of the illumination system is controllable.
  • a method for the automatic adjustment of a light unit of a vehicle and a lighting system for a vehicle with at least one light unit are known from DE 10 2007 049 619 A1.
  • a specific light function characterizing light distribution of the light unit is generated by means of at least one activated base light source, wherein at least one optical adjustment mark in the visible spectral range is generated invisible to the human eye.
  • the adjustment mark can be detected in an adjustment mode of the light unit by means of a detector unit. Depending on detection and comparison with a reference mark, the light unit is adjusted.
  • the unpublished 102010006190.5 the applicant describes a method for adjusting at least one light unit of a vehicle, wherein at least one, a specific light function by means of at least one activated light source characterizing light distribution of the light unit is generated.
  • at least one image of the light distribution is detected by means of at least one image acquisition unit of the vehicle and an evaluation of the at least one acquired image in an image evaluation unit determines a horizontal and / or vertical position of at least one predetermined part of the light distribution and with a predetermined horizontal and / or vertical Target position compared.
  • an information message to a vehicle driver is generated and / or means for horizontal and / or vertical adjustment of the light unit are activated.
  • the invention has for its object to provide a comparison with the prior art improved method for adjusting and / or calibrating at least one light unit of a vehicle.
  • the object is achieved by a method, which in the
  • a relative position of the illuminated target object to the vehicle is determined, wherein from the relative position of the target object and to the respective light distribution associated parameters of the light unit, a calibration point is determined which a relative actual position of the target object (O) in dependence each set
  • Headlamps a use of affyachGermangescetate is not required, whereby a reduction in the cost of manufacturing the vehicle is achieved. Another advantage arises when using the method in quality assurance. For example, manufacturing errors (such as lens defects) can be easily found and corrected early.
  • the high accuracy of the method is particularly advantageous in use with an automatic calibration of the headlight, not shown, during driving after delivery of a vehicle. Due to the exact determination of the properties of the headlamp this is already fully operational, so that an automatic calibration while driving only small
  • FIG. 1A shows schematically a detection range of a sensor as well as a target object illuminated by means of a first light unit
  • 1 B shows schematically a detection range of a sensor as well as a target object illuminated by a first light unit
  • Fig. 2 shows schematically a diagram with a deviation of one by means of a
  • FIG. 3 shows schematically a model of a light distribution of a light unit after a
  • FIGS. 1 A and 1 B each show in a left-hand section a detection region E of a sensor, not shown, and a target object O arranged within this detection region E.
  • the sensor is, in particular, a radar sensor arranged on a vehicle, also not shown, which adjusts and / or calibrated. This adjustment and / or
  • Calibration takes place, for example, during a so-called band end calibration and / or during operation of the vehicle on the basis of a so-called online calibration.
  • the sensor may alternatively also be an already calibrated lidar sensor, ultrasonic sensor, laser sensor or another sensor calibrated on the vehicle.
  • FIGS. 1A and 1B a camera image is shown schematically.
  • the camera images show the target object O, which is illuminated by a left-hand headlight (FIG. 1A) and a right-hand headlight (FIG. 1B) of the vehicle.
  • the target object O is positioned in a light distribution L L , L R.
  • the optical unit is a light unit of the vehicle which generates the light distribution L L , L R.
  • a relative position of the illuminated target object O to the vehicle is determined, wherein in each case a relative position of the target object O and associated parameters of the light unit, a calibration point K1 to Kn shown in more detail in FIG.
  • a calibration point represents the relative position of the target object O as a function of the associated currently set parameters of the light unit.
  • the light unit comprises at least two headlights of the vehicle, wherein the headlights as LED headlights, as headlights with at least one
  • Gas discharge lamp are designed as headlights with a light bulb or as a combination of these.
  • the light unit d. H. the headlight
  • Illumination of the target object O realized with light distributions L L , L R.
  • the method according to the invention is suitable for determining and correcting a vertical and / or horizontal alignment of the headlight and its exact mounting position in a particularly simple manner.
  • the alignment of one of the headlights is described solely by means of a change of a parameter in the form of a yaw angle ⁇ , wherein the orientation additionally comprises changes in further vertical and / or horizontal parameters or orientation angle of the headlight.
  • Hazard marking light is used, with a mechanical tolerance of about ⁇ 3 °. However, to achieve a pleasing to the driver of the vehicle and optimized lighting of danger points, a very low tolerance of less than + 1 ° is required. Based on a mechanical tolerance of about ⁇ 3 °.
  • Adjustment of the headlight for example on a screw, but only a tolerance of about + 1 ° can be generated.
  • very low tolerance values of less than ⁇ 1 ° can be realized by means of the method according to the invention.
  • the method according to the invention comprises two phases.
  • data of the environment, in particular the target object O are acquired during the calibration of the headlight during data acquisition.
  • a current orientation of the headlamp is determined according to Figure 2.
  • the headlight is controlled in such a way that the target object O is illuminated with a defined light pattern. This pattern of light will depend on a model assumption of intrinsic parameters of the light unit, i. H. of the headlight, generated.
  • Intrinsic parameters of an LED headlight are, for example, a number of LED pixels, a respective opening angle of the LED pixels and an opening angle of the entire headlight.
  • the defined light pattern is generated using the example of the LED headlight, for example, by activating a column, a row or other combinations of activated LED pixels. If the headlight has, for example, a gas discharge lamp as the light source, the light pattern can be generated in particular by aligning one or more diaphragms and / or rollers.
  • Embodiment to a radar target also known as Radarcorner acts, in the middle of output for generating the light pattern by means of the headlamp Light distribution L L or L R positioned, wherein a position of the radar target is detected by the radar sensor.
  • the properties of the light distribution L L or L R are determined based on the position determination of the target object O and the model assumption derived from the intrinsic parameters of the headlamp via the light distribution L L or L R.
  • the properties are, in particular, a luminous range, luminous width, a propagation angle, the yaw angle ⁇ and a vertical angle.
  • the alignment or positioning of the radar target is done manually or automatically, for example by means of a rail system. There will be a rail system.
  • an automatic device for detecting the headlights such.
  • the radar sensor has, for example, a measuring tolerance of 0.1 ° in the storage angle and at a distance of 0.25 m.
  • a measuring tolerance of 0.1 ° in the storage angle and at a distance of 0.25 m.
  • FIG. 2 shows a diagram which represents a deviation of the light distribution L L of the left headlamp from a desired light distribution SL and for determining the
  • Headlamp alignment is used in the second phase of the process.
  • the procedure described below applies analogously to the adjustment of the light distribution L R of the right headlamp.
  • extrinsic parameters of the headlight are adjusted by means of an optimization method such that a deviation A of the respective
  • Light distribution L L is minimized by a desired light distribution SL.
  • the extrinsic parameters of the headlamp are parameters that can be changed by external influences. These are, for example, a height of the generated
  • Model assumption that includes intrinsic and extrinsic headlight parameters By varying the extrinsic headlamp parameters, shown in FIG. 2 as a variation of the headlamp angle of incidence, the optimum expression of the extrinsic headlamp parameters is determined by comparing the deviation of the measured properties of the present headlamp with the properties of a desired headlamp.
  • the optimal Einbaugierwinkel ⁇ ⁇ ⁇ the headlight is 1, 9 °.
  • the value of the error function at the optimum location also provides information about a quality or quality of the measurement or the calibration performed. The quality depends on the quality of the
  • the example of an LED headlamp represents a deviation from an upper limit, since this value, together with the fact that the light distribution of an LED pixel has an aperture angle of 1 °, means that on average an offset of one pixel column to the desired value occurs ,
  • the light distribution L L deviates at an optimum yaw angle ⁇ ⁇ 1 on average with an error of 0 ° from the target light distribution SL, so that each calibration point K1 to Kn by
  • FIG. 3 shows a model of a total light distribution L ges of one of the headlights, a headlight alignment and the calibration points K1 to Kn after calibration of the headlight Headlamps in a top view.
  • the representation corresponds to the DIN-70000, wherein a longitudinal position POS L is plotted over a lateral position POS Q and a
  • Vehicle origin is assumed as the center of the vehicle front axle.
  • the solid lines represent an idealized cone each one pixel column, the dashed lines each show the bisector of this cone.
  • the bisecting line thus shows the location where the radar target is preferably positioned.
  • the calibration points K1 to Kn are output in color (not shown in detail), wherein, for example, a green indicates that the respective radar target is in the correct cone.
  • a red marking indicates the calibration points K1 to Kn to the effect that a radar target is in the wrong cone.
  • the inventive method is also suitable after adjusting and
  • a reflection device is arranged on the target object O in a manner not shown which, when illuminated by means of the headlamp, generates a characteristic signal which is detected by means of the camera. Based on a determination of pixel coordinates of these
  • Reflection device in the camera image is at the same time information about a

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

L'invention concerne un procédé d'ajustement et/ou d'étalonnage d'au moins une unité optique d'un véhicule, un objet cible (O) étant positionné dans une répartition de lumière (LL, LR) lors de l'étalonnage. La répartition de lumière (LL, LR) est générée au moyen d'une première unité optique conçue comme unité de lumière, et une position relative de l'objet cible (O) éclairé par rapport au véhicule est déterminée au moyen d'au moins un capteur étalonné, un point d'étalonnage (K1 à Kn) étant déterminé à partir de la position relative de l'objet cible (O) et de paramètres, spécifiques à la répartition de lumière (LL, LR) respective, de l'unité lumineuse, lequel point représente une position réelle relative de l'objet cible (O) en fonction de paramètres respectivement réglés de l'unité lumineuse.
PCT/EP2010/007199 2010-03-10 2010-11-27 Procédé d'ajustement et/ou d'étalonnage d'une unité optique d'un véhicule WO2011110203A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010010909 DE102010010909A1 (de) 2010-03-10 2010-03-10 Verfahren zum Justieren und/oder Kalibrieren einer optischen Einheit eines Fahrzeugs
DE102010010909.6 2010-03-10

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Publication Number Publication Date
WO2011110203A1 true WO2011110203A1 (fr) 2011-09-15

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DE (1) DE102010010909A1 (fr)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017112533A1 (de) * 2017-06-07 2018-12-13 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren zum Anpassen einer Scheinwerferausrichtung
DE102018204424B3 (de) 2018-03-22 2019-08-08 Audi Ag Verfahren zum Kalibrieren einer Position eines Matrix-Scheinwerfers eines Kraftfahrzeugs, Steuereinrichtung und Kraftfahrzeug

Citations (11)

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Publication number Priority date Publication date Assignee Title
EP0132151A1 (fr) * 1983-07-18 1985-01-23 Toyota Jidosha Kabushiki Kaisha Procédé et appareil pour corriger automatiquement la position d'une caméra de télévision
US5321439A (en) * 1992-10-14 1994-06-14 Environmental Systems Products, Inc. Vehicle headlight testing system
DE19902015A1 (de) 1999-01-20 2000-07-27 Porsche Ag Anordnung zur Anpassung des Beleuchtungssystems an einem Kraftfahrzeug
WO2001071378A1 (fr) * 2000-03-20 2001-09-27 Gentex Corporation Systeme automatique de commande des phares
EP1201498A1 (fr) * 2000-10-27 2002-05-02 Valeo Vision Dispositif de correction automatique de l'orientation en site d'un projecteur de véhicule automobile
WO2003053737A1 (fr) * 2001-12-10 2003-07-03 Gentex Corporation Commande de phare avant pour eviter l'eblouissement
DE102004052434A1 (de) * 2004-10-28 2006-05-04 Conti Temic Microelectronic Gmbh Vorrichtung und Verfahren zur Leuchtweitenregelung von Fahrzeugscheinwerfern
DE102008041923A1 (de) * 2007-09-10 2009-04-16 Denso Corporation, Kariya Vorrichtung zur Steuerung der Richtung von Licht, das von Scheinwerfern abgestrahlt wird
DE102007049619A1 (de) 2007-10-17 2009-04-23 Audi Ag Verfahren zur automatischen Justage einer Lichteinheit eines Fahrzeugs und Leuchtsystem für ein Fahrzeug
DE102008014182A1 (de) * 2008-03-14 2009-09-17 Daimler Ag Verfahren zur Fahrlichtsteuerung eines Fahrzeugs
EP2128590A1 (fr) * 2008-05-28 2009-12-02 Hella KGaA Hueck & Co. Procédé et dispositif de calibrage d'une limite claire-obscure horizontale produite par un phare frontal d'un véhicule

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0132151A1 (fr) * 1983-07-18 1985-01-23 Toyota Jidosha Kabushiki Kaisha Procédé et appareil pour corriger automatiquement la position d'une caméra de télévision
US5321439A (en) * 1992-10-14 1994-06-14 Environmental Systems Products, Inc. Vehicle headlight testing system
DE19902015A1 (de) 1999-01-20 2000-07-27 Porsche Ag Anordnung zur Anpassung des Beleuchtungssystems an einem Kraftfahrzeug
WO2001071378A1 (fr) * 2000-03-20 2001-09-27 Gentex Corporation Systeme automatique de commande des phares
EP1201498A1 (fr) * 2000-10-27 2002-05-02 Valeo Vision Dispositif de correction automatique de l'orientation en site d'un projecteur de véhicule automobile
WO2003053737A1 (fr) * 2001-12-10 2003-07-03 Gentex Corporation Commande de phare avant pour eviter l'eblouissement
DE102004052434A1 (de) * 2004-10-28 2006-05-04 Conti Temic Microelectronic Gmbh Vorrichtung und Verfahren zur Leuchtweitenregelung von Fahrzeugscheinwerfern
DE102008041923A1 (de) * 2007-09-10 2009-04-16 Denso Corporation, Kariya Vorrichtung zur Steuerung der Richtung von Licht, das von Scheinwerfern abgestrahlt wird
DE102007049619A1 (de) 2007-10-17 2009-04-23 Audi Ag Verfahren zur automatischen Justage einer Lichteinheit eines Fahrzeugs und Leuchtsystem für ein Fahrzeug
DE102008014182A1 (de) * 2008-03-14 2009-09-17 Daimler Ag Verfahren zur Fahrlichtsteuerung eines Fahrzeugs
EP2128590A1 (fr) * 2008-05-28 2009-12-02 Hella KGaA Hueck & Co. Procédé et dispositif de calibrage d'une limite claire-obscure horizontale produite par un phare frontal d'un véhicule

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017112533A1 (de) * 2017-06-07 2018-12-13 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren zum Anpassen einer Scheinwerferausrichtung
DE102017112533B4 (de) 2017-06-07 2024-05-23 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren zum Anpassen einer Scheinwerferausrichtung
DE102018204424B3 (de) 2018-03-22 2019-08-08 Audi Ag Verfahren zum Kalibrieren einer Position eines Matrix-Scheinwerfers eines Kraftfahrzeugs, Steuereinrichtung und Kraftfahrzeug
WO2019179753A1 (fr) 2018-03-22 2019-09-26 Audi Ag Procédé servant à étalonner une position d'un phare matriciel d'un véhicule automobile, dispositif de commande et véhicule automobile
US11807156B2 (en) 2018-03-22 2023-11-07 Audi Ag Method for calibrating a position of a matrix headlamp of a motor vehicle, control device, and motor vehicle

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