WO2023115086A1 - Procédé de détection d'un état de lumière ambiante - Google Patents

Procédé de détection d'un état de lumière ambiante Download PDF

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Publication number
WO2023115086A1
WO2023115086A1 PCT/AT2022/060450 AT2022060450W WO2023115086A1 WO 2023115086 A1 WO2023115086 A1 WO 2023115086A1 AT 2022060450 W AT2022060450 W AT 2022060450W WO 2023115086 A1 WO2023115086 A1 WO 2023115086A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
sensor
photo sensors
ambient light
photo
Prior art date
Application number
PCT/AT2022/060450
Other languages
German (de)
English (en)
Inventor
Georg BRUNNHOFER
Andreas Klug
Christof LEITGEB
Original Assignee
Avl List Gmbh
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 Avl List Gmbh filed Critical Avl List Gmbh
Publication of WO2023115086A1 publication Critical patent/WO2023115086A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4204—Photometry, e.g. photographic exposure meter using electric radiation detectors with determination of ambient light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • G01J1/0242—Control or determination of height or angle information of sensors or receivers; Goniophotometry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • G01J1/04—Optical or mechanical part supplementary adjustable parts
    • G01J1/0403—Mechanical elements; Supports for optical elements; Scanning arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4228—Photometry, e.g. photographic exposure meter using electric radiation detectors arrangements with two or more detectors, e.g. for sensitivity compensation

Definitions

  • the invention relates to a method for detecting an ambient light condition in the vicinity of a vehicle.
  • US 5,100,000 also relates to a sensor arrangement for mounting on a vehicle and for determining ambient light conditions with a plurality, preferably four, photosensors directed in different directions.
  • driver assistance systems usually have a large number of sensors, including optical sensors, the ambient light conditions can be problematic for the function of the driver assistance system.
  • object detection due to backlighting, solar radiation, sudden and strong changes in the level of illumination, for example when entering/exiting tunnel tubes, or constant and rapid changes in light and shadow, for example when driving through forests can make the measured values of the optical sensors less useful. This can lead to very different data situations in different conditions such as strong sunlight from the front, cloudy sky, driving in a tunnel, etc.
  • DEO 10 2015 200 583 A1 discloses a method for detecting the ambient light of a vehicle, in which a planar image sensor and a single photocell are provided, and in which the measured values of these components are evaluated and compared in order to check the signals for plausibility. This alone provides insufficient information about the ambient light.
  • DE 10 2017 000 474 A1 discloses a device for determining the ambient light of a vehicle, with two light sensors being arranged parallel to one another but having different opening angles. In this way, different positions of the sun can be identified. However, the identification of some environmental conditions is still difficult and imprecise.
  • EP 1 566 654 A2 discloses a sensor unit for a motor vehicle for measuring light with a number of sensor elements. A sensor element is used for this for measuring the light in the direction of travel of the motor vehicle and a sensor element for measuring the light in the vicinity of the motor vehicle.
  • EP 2 570 964 A2 discloses a method in which an object is illuminated by a headlight of the vehicle and image data from a camera and relative position data from a receiving unit are evaluated together so that the illuminated object can be recognized as self-luminous or as reflective. Again, this gives little information about the ambient light conditions.
  • US 2014/277939 A1 describes how the current weather and ambient light conditions around the vehicle are determined by recordings by a camera of the vehicle, supported by additional data from GPS, online weather data and the time.
  • the camera is primarily used to check the weather data that is already available and retrieved online. This causes an inexact result.
  • detection is highly dependent on the quality of the data available online.
  • the object of the invention is therefore to provide a method for detecting ambient light conditions in the vicinity of a vehicle and a sensor arrangement for mounting on a vehicle and for determining ambient light conditions, which enables the ambient light condition to be detected exactly and as independently as possible.
  • the dimension can be calculated, for example, by means of a calculation unit.
  • the measure therefore indicates how much the measured values of the different photo sensors deviate from each other, i.e. how scattered they are.
  • the sensor arrangement has a calculation unit connected to the photosensors for calculating at least one measure of the scatter, preferably the standard deviation or the variance, from at least some of the measured brightness values of the photosensors, and that the sensor arrangement has a calculation unit connected to the calculation unit Has a detection unit, which is designed to detect an ambient light condition on the basis of at least one absolute brightness value based on the measured brightness values of the photo sensors and the index.
  • the absolute brightness value and at the same time the measure for the scattering it is surprisingly possible to determine exactly what lighting conditions the vehicle's sensors are exposed to. If the incidence of light is diffuse, for example when it is very cloudy, the measured values are in a narrow range.
  • the brightness value of at least one photo sensor is higher than that of at least a second one. This is due to the different position and possibly also alignment of the photo sensors to the light source. In this way, the current ambient light conditions can also be recognized in real time. Rapid changes in the ambient light conditions are also easily recognizable.
  • the detection of the ambient light condition can also include the identification of one or more light sources and/or the type of these light sources, for example the sun, street lights or vehicle lights of other vehicles.
  • the spectral light components can preferably also be distinguished, preferably between ultraviolet (UV), visible (Vis) and infrared (IR) light components. This allows diffuse Distinguish lighting conditions such as heavy cloud cover from, for example, shady conditions in otherwise sunny conditions.
  • UV ultraviolet
  • Visibility visible
  • IR infrared
  • the recognition unit and the calculation unit can also be implemented together, for example in a common microcontroller or common computer system.
  • the recognition unit can also be connected directly to the photosensors or can receive measured brightness values of the photosensors in processed or unprocessed form via the calculation unit.
  • Photo sensors are any type of sensors that can convert the characteristics of light falling on the sensor into a signal that can be processed, preferably an electrical signal.
  • This can be, for example, a simple photodiode, a diode array, a camera, or also large-area photosensitive elements on rigid or flexible carrier materials, structures or mats, so-called large-area (flexible) electronics units.
  • Provision can also be made for a single sensor element, for example a sensor foil, to be provided, with this sensor element having a plurality of measuring areas which supply measured values which are independent of one another. In this case, these measuring ranges correspond to the photo sensors.
  • the measured brightness value can be the illuminance, measured in lux, and/or the light intensity and/or another physical variable or a combination of these variables that characterizes the light falling on the vehicle from a specific direction.
  • the ambient light conditions can be weather conditions, ie, for example, bright sunshine, cloudy situations during the day, sunrise or sunset, or no solar radiation during the nighttime.
  • the ambient light conditions can also be caused by other factors of the environment or traffic, for example low lighting due to driving in a tunnel, repeated strong changes in the frontal lighting when driving overland at night and oncoming traffic, area-specific illumination by street lighting, etc.
  • the photo sensors are preferably arranged outside the vehicle and/or are at least directed outwards.
  • At least some of the measured brightness values and/or the differences in at least some of the measured brightness values at the point in time can be used as absolute Brightness values are included in the detection of an ambient light condition.
  • the measure for the scattering is essentially invariant to a rotation of the photo sensors about a vertical axis of the vehicle.
  • the measure remains essentially unchanged when the vehicle rotates about its vertical axis, even if the sun or another strong light source shines from a certain direction.
  • the exact position of the light source can be calculated from the absolute brightness readings, while the metric can be used to identify other conditions such as cloudiness.
  • the vertical axis means an axis of the vehicle which runs vertically when the vehicle is level, ie which is essentially transverse to the wheel plane.
  • the wheel plane means a substantially horizontal plane when the vehicle is intended to be lying on a level surface and the wheels are on the same plane, the wheel plane.
  • the mean value of at least part of the measured values of the photo sensors is calculated and used as an absolute brightness value for detecting an ambient light condition.
  • the measured values from a selection of the photo sensors can be used. Provision can also be made for the measured values of at least one specific wavelength and/or at least one specific wavelength spectrum to be used to calculate the mean value. It can also be advantageous for the measured values from specific points in time to be used to calculate the mean value.
  • the mean value can be calculated easily and quickly and is a good indicator for estimating the absolute overall brightness. It thus enables a subdivision of the ambient light condition on the basis of typical illuminance levels, but also an initial assessment of the type of light source and its current state, e.g. street lighting, the sun on a clear sky and the sun on a cloudy sky.
  • a measured, absolute brightness value measured by a photosensor preferably the highest brightness value measured at the time
  • the highest brightness value measured best reflects the brightness of the strongest light source, allowing it to be accurately identified. It is particularly advantageous if the photo sensors point in different directions.
  • the measurement of brightness values of the surroundings of the vehicle can be carried out with several photo sensors from several, preferably four, different directions. This causes large differences in the brightness readings when light is emitted from a specific direction, making it easier to identify the ambient light condition.
  • the brightness value of the photosensors directed towards the source is significantly higher than those that are further away or inclined from it. This simplifies the detection of the ambient light condition and in particular the detection and positioning of light sources and leads to higher accuracy.
  • the photo sensors of the sensor arrangement are at least partially directed in different directions and the further photo sensor is preferably directed in a different direction than the photo sensors. If the additional photosensor is directed in a different direction than the photosensors, the information content is expanded in that information that is not partially redundant is recorded between at least one photosensor and the additional photosensor.
  • the different irradiation angles of the photosensors by the light sources can be sufficient to generate differences in the measured brightness values, which make it possible to recognize the ambient light condition.
  • At least two, preferably four, photosensors are arranged essentially rotationally symmetrically around a vertical axis of the vehicle.
  • one photo sensor points in the direction of travel, one against the direction of travel and one photo sensor each to the left and right.
  • the photosensors are arranged in a sensor unit and are preferably arranged essentially rotationally symmetrically about a vertical axis of the sensor unit.
  • the sensor unit can require a compact form which can be easily mounted on a vehicle, for example on the roof of the vehicle.
  • the sensor unit can also be designed as a sensor housing or can include a sensor housing.
  • a detection unit receives at least the absolute brightness value and the metric, and compares the absolute brightness value and the metric with value ranges of stored, categorized ambient light conditions to identify the ambient light condition. Provision can preferably also be made for the detection unit to select that stored ambient light condition for the point in time whose pre-stored values best match those of the measured ones.
  • At least one value range for the absolute brightness value and one for the standard deviation is stored for each ambient light condition. If both measured values fall within the range, it is recognized that the relevant ambient light condition is present.
  • the prevailing ambient light condition can be divided into a defined category, for example "strong sunshine” (high mean value with high standard deviation), “shady driving condition” (low mean value with medium-high standard deviation), or “minimal lighting” (very low mean value with low standard deviation). ).
  • these processes can also be automatically carried out with finer categorization by means of self-learning, self-calibrating and/or self-adapting systems.
  • further measurement data preferably the time in the area of the vehicle, the position of the vehicle, particularly preferably the GPS position, and/or the location and/or geographic orientation of the vehicle, are used in the detection of the ambient light conditions are taken into account.
  • the sensor arrangement has a locating device, preferably a GPS locating device, and/or a clock and/or at least one position sensor or a compass.
  • the other measurement data does not necessarily have to be measured by the vehicle itself.
  • the time can be queried via wireless transmission from a clock that is further away, for example an atomic clock, or can come from GPS data.
  • the position of the vehicle means the inclination along the longitudinal and/or transverse axis of the vehicle, i.e. the pitch or roll angle.
  • the measured values of the photo sensors can be combined with the respective further data.
  • this allows the ambient light conditions to be better determined, for example by including the prevailing time and possibly also the date of the observation in the assessment of the light sources.
  • the detected ambient light condition can also be assigned to a location or a time, thus facilitating further processing or analysis after the journey.
  • support can be provided by self-learning systems.
  • At least one additional photo sensor which is essentially directed in the direction of travel of the vehicle, measures at least one measured brightness value at the at least one point in time and this measured brightness value is included in the detection of an ambient light condition.
  • the sensor arrangement has a further photosensor, which is designed to be attached in the direction of travel of the vehicle.
  • the sensor arrangement can also have a further photosensor, which is designed to be attached in the opposite direction to the direction of travel of the vehicle. It is preferably provided that the further photo sensor is arranged in the area of a photo sensor of the driving assistance system.
  • the additional photosensor is spaced apart from the sensor unit.
  • the additional photosensor can be arranged in the area of the hood, while the sensor unit can be arranged on the roof of the vehicle.
  • the additional photo sensor can be connected to the other parts of the sensor arrangement by cable or wirelessly, for example by radio, Bluetooth or wireless LAN.
  • the further photo sensor is essentially parallel to a vertical axis of the vehicle.
  • the change in the absolute brightness value and/or the dimension number between a number of points in time is included in the detection of the ambient light condition at a specific point in time. This is particularly useful when the light changes rapidly and these indicate a specific light situation, for example driving into or out of a tunnel in bright sunshine.
  • at least one of the photo sensors preferably all photo sensors, determines measured brightness values for at least two different wavelengths or wavelength ranges of the light and particularly preferably if all photo sensors determine measured brightness values for the same wavelengths or wavelength ranges of the light . In this way, different light sources, which have different characteristic spectra, can be distinguished from one another.
  • At least one of the photo sensors measures at least one brightness measurement value each in the infrared range, in the ultraviolet range and in the visible light range.
  • information about the light source or light sources can be recorded in a particularly simple and comprehensive manner and light sources can be differentiated from one another and/or identified, but also the ambient light conditions.
  • the photo sensors preferably at least all four photo sensors, comprise at least one infrared sensor, one ultraviolet sensor and one sensor for visible light.
  • the relative position of at least one light source, preferably at least the sun, to the vehicle is determined from the measured brightness values of the photo sensors. This can help to identify the lighting situation, since, for example, a low-lying sun provides strong backlight in the direction of travel, while driving in the opposite direction, i.e. away from the sun, puts a different load on the sensors of the driver assistance system.
  • the position of the photosensors to those of the sun on the horizon in the part of the world in which the invention is carried out will be ideally adjusted.
  • an arrangement at an angle of approximately 47° is particularly advantageous when used in Central Europe, since as much sunlight as possible falls on the sensors in this way.
  • the sensor unit has at least one main contact surface for resting on the vehicle and at least one photo sensor of the sensor unit points away from the main contact surface and at an angle of between 10° and 70°, particularly preferably between 25° and 55°, very particularly preferably between 40° and 50°.
  • the horizontal plane is a plane which is horizontal when the vehicle is arranged on a level surface. So it corresponds to or is parallel to the wheel plane of the vehicle and is normal to the vertical axis of the vehicle.
  • the invention also relates to a vehicle, in particular partially or fully autonomous vehicles, with at least one driver assistance system (ADAS, Advanced Driver Assistance System'), the ADAS having at least one photosensor and the vehicle having a sensor arrangement according to the invention in addition to the ADAS.
  • ADAS Driver Assistance System
  • the sensor arrangement or at least the photo sensors are preferably arranged on the roof and/or the hood of the vehicle.
  • the photo sensor of the ADAS is a camera.
  • vehicle is to be understood broadly, it can also be a rail vehicle such as a train, a watercraft such as a ship, an aircraft such as a helicopter or airplane, or another vehicle.
  • the further photo sensor points essentially in the direction of travel of the vehicle and is preferably located in the area of the at least one photo sensor of the ADAS. This enables particularly good detection of light falling on the vehicle from the front.
  • the measurement of a measured brightness value of the surroundings of the vehicle at the time is provided by a sky light photo sensor, and that the sky light photo sensor is shielded from direct solar radiation.
  • the sensor arrangement can also be made for the sensor arrangement to have at least one skylight photosensor, which is shielded from direct solar radiation.
  • Such shielding can be achieved, for example, by means of a corresponding cover, or by directing the skylight photosensor in the direction of the underground, with a light-reflecting surface preferably being arranged opposite the skylight photosensor in this case.
  • the indirect, diffuse sunlight that has been scattered by the atmosphere, the so-called skylight can be better determined. This can occur with a clear sky in combination with direct sunshine as well as without direct sunshine, for example when it is cloudy. This makes it easier to distinguish shadow conditions from cloudy skies.
  • At least two photosensors are designed as a common sensor film, which have at least two sensor areas that are preferably directed in different directions. All photo sensors are preferably designed as a common sensor film.
  • Such sensor foils generally have a very large number of individual photosensors, which are usually arranged in a matrix-like manner.
  • This sensor film can be essentially flat, at least in sections, so the photo sensors can be directed in essentially the same direction, at least in sections. An ambient light condition can thus be detected on the basis of the intensity differences of the brightness measurement values of the photo sensors. Provision can also be made for the sensor film to be essentially bent, at least in sections. In other words, it can therefore be provided that the photo sensors of the sensor film are essentially directed in different directions, at least in sections.
  • the sensor film is bent in at least one direction of extension.
  • the sensor film can be made hemispherical. In this way, the positions of light sources can be determined even more precisely.
  • the sensor film is aligned essentially parallel to a horizontal plane of the vehicle and points away from the vehicle, preferably points upwards, i.e. points away from the base of the vehicle in the intended use position.
  • FIG. 1a shows a sensor arrangement according to the invention in a schematic oblique view in one embodiment
  • FIG. 1b shows part of a section through a sensor arrangement according to the embodiment, arranged on a vehicle roof;
  • FIG. 2 shows part of the sensor unit of the sensor arrangement in FIG. 1 in a plan view
  • FIG. 3 shows a diagram of the measured brightness values over time during a test drive and the calculated mean values and standard deviations compared to this.
  • FIG. 1a shows a sensor arrangement 1 with a sensor unit 2 on which four photosensors 3 are arranged.
  • two photosensors 3 are opposite each other at a 90° angle to the other two photosensors.
  • the photo sensors are thus arranged in a rotationally symmetrical manner about a vertical axis A of the sensor unit 2 .
  • the vertical axis A is oriented normal to a main bearing surface 4 of the sensor unit, which is used for attaching the sensor arrangement
  • the vertical axis of the vehicle then corresponds to that of the vertical axis A or is at least parallel to it.
  • the photo sensors 3 are inclined at an angle 5 of 47° in relation to the main bearing surface 4 and point away from the center of the sensor unit 2 . Thus, the photo sensors 3 are all pointing away from each other and in different directions.
  • the sensor arrangement has a cable 6 for the power supply.
  • the sensor unit 2 can be connected via the cable 6 to a further sensor that is not arranged in the sensor unit 2 .
  • the sensor unit 2 has an energy store such as a battery, which supplies it with energy.
  • the photo sensor 3 is oriented to the altitude of the sun in Europe and North America. Depending on the place of use, this angle can be varied.
  • FIG. 2 shows a support part 2e of the sensor unit 2, on which the photosensors
  • the support part 2e has four receiving surfaces 2a-2d, each of which is pivoted by 90° about the vertical axis A relative to its adjacent receiving surfaces 2a-2d.
  • the photosensor 3 on the bearing surface 2b is irradiated the most and will deliver the highest measured brightness value.
  • the photosensor 3 on the supporting surface 2a is irradiated more weakly and those on the supporting surfaces 2c and 2d even weaker. In this way, the direction of the light can be determined from the measured brightness values.
  • the sensor arrangement 1 is preferably mounted on the vehicle in such a way that the photosensor 3 on the contact surface 2a is directed in the direction of travel and that on the contact surface 2c is directed counter to the direction of travel.
  • the measured brightness values of the sensor arrangement from the previous figures are shown as illuminance in lux over time in seconds.
  • the calculated mean value m of all four measured brightness values and the associated standard deviation s around the mean value m in a separate diagram for a better overview.
  • the photo sensor 2 directed in the direction of travel supplies the measured brightness value 8a
  • the photo sensor 2 directed to the left supplies the measured brightness value 8b
  • the photo sensor 2 directed in the opposite direction of travel supplies the measured brightness value 8c
  • the photo sensor 2 directed to the right supplies the measured brightness value 8d.
  • a first driving phase 9a strong value changes can be seen in the mean value m and in the standard deviation s. This suggests movement in strong sunshine through an area where the sun is consistently obscured by objects such as tall buildings.
  • the mean value m and the standard deviation s are very high. This occurs in strong sunshine and clear skies.
  • the mean value m and the standard deviation s are minimal. This indicates a tunnel journey, especially in combination with a time when sunshine can be expected.
  • the mean value m is at a low level and the standard deviation s is also very low. This can be interpreted as driving during the day under very cloudy skies or shadows cast by objects such as houses.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Automation & Control Theory (AREA)
  • Mathematical Physics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

L'invention concerne un procédé de détection d'un état de lumière ambiante dans l'environnement d'un véhicule, le procédé comprenant les étapes suivantes consistant à : mesurer des valeurs de mesure de luminosité de l'environnement du véhicule à l'aide d'une pluralité de photocapteurs, de préférence quatre (3) à au moins un point temporel ; calculer au moins une mesure pour la diffusion, de préférence l'écart ou les écarts types ou la variance, d'au moins une partie des valeurs de mesure des photocapteurs (3) au point temporel ; détecter une condition de lumière ambiante au point temporel sur la base d'au moins une base de valeur de luminosité absolue sur les valeurs de mesure de luminosité (8a-8d) des photocapteurs (3) et de la mesure.
PCT/AT2022/060450 2021-12-20 2022-12-20 Procédé de détection d'un état de lumière ambiante WO2023115086A1 (fr)

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ATA51016/2021A AT525768B1 (de) 2021-12-20 2021-12-20 Verfahren zur erkennung von einer umgebungslichtbedingung
ATA51016/2021 2021-12-20

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US5072105A (en) * 1989-09-29 1991-12-10 Zexel Corporation Solar radiation detecting device and automobile air-conditioner using the same
US5181654A (en) * 1990-10-04 1993-01-26 Nippondenso Co., Ltd. Sunshine sensor and air conditioner for vehicle
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EP1566654A2 (fr) 2004-01-24 2005-08-24 Hella KGaA Hueck & Co. Dispositif dans une véhicule pour mesurer la lumière
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EP2570964A2 (fr) 2011-08-23 2013-03-20 Robert Bosch Gmbh Procédé et dispositif de distinction d'un objet auto-luminescent d'un objet réfléchissant
US20140277939A1 (en) 2013-03-14 2014-09-18 Robert Bosch Gmbh Time and Environment Aware Graphical Displays for Driver Information and Driver Assistance Systems
WO2018108259A1 (fr) * 2016-12-14 2018-06-21 Nilsson Dan Eric Procédé de détermination d'une répartition spatiale de la lumière dans un environnement
DE102017000474A1 (de) 2017-01-18 2018-07-19 Nikolaus Pohlmann Anordnung zur Ermittlung der Lichtverhältnisse auf Verkehrswegen
WO2020151942A1 (fr) * 2019-01-22 2020-07-30 Saint-Gobain Glass France Vitre de véhicule avec un capteur de lumière dépendant de la direction

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Publication number Priority date Publication date Assignee Title
US4760772A (en) 1986-12-03 1988-08-02 Hitachi, Ltd. Vehicle air-conditioning control apparatus
US5072105A (en) * 1989-09-29 1991-12-10 Zexel Corporation Solar radiation detecting device and automobile air-conditioner using the same
US5181654A (en) * 1990-10-04 1993-01-26 Nippondenso Co., Ltd. Sunshine sensor and air conditioner for vehicle
WO2001070538A2 (fr) * 2000-03-20 2001-09-27 Gentex Corporation Systeme de commande des lumieres exterieures d'un vehicule
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