WO1995004670A1 - Procede et dispositif de commande automatique du dispositif lumineux de vehicules - Google Patents

Procede et dispositif de commande automatique du dispositif lumineux de vehicules Download PDF

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Publication number
WO1995004670A1
WO1995004670A1 PCT/NO1994/000132 NO9400132W WO9504670A1 WO 1995004670 A1 WO1995004670 A1 WO 1995004670A1 NO 9400132 W NO9400132 W NO 9400132W WO 9504670 A1 WO9504670 A1 WO 9504670A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
light
unit
equipment
vehicles
Prior art date
Application number
PCT/NO1994/000132
Other languages
English (en)
Inventor
Terje Moen
Per SCHJÖLBERG
Anton Gjevik
Original Assignee
Sinvent As
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 Sinvent As filed Critical Sinvent As
Priority to AU74690/94A priority Critical patent/AU7469094A/en
Publication of WO1995004670A1 publication Critical patent/WO1995004670A1/fr

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
    • B60Q1/14—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 having dimming means
    • B60Q1/1415—Dimming circuits
    • B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
    • 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
    • B60Q2300/31—Atmospheric conditions
    • B60Q2300/314—Ambient light
    • 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
    • B60Q2300/40—Indexing codes relating to other road users or special conditions
    • B60Q2300/41—Indexing codes relating to other road users or special conditions preceding vehicle
    • 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
    • B60Q2300/40—Indexing codes relating to other road users or special conditions
    • B60Q2300/42—Indexing codes relating to other road users or special conditions oncoming vehicle
    • 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
    • B60Q2300/40—Indexing codes relating to other road users or special conditions
    • B60Q2300/43—Indexing codes relating to other road users or special conditions following vehicle
    • 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
    • B60Q2300/40—Indexing codes relating to other road users or special conditions
    • B60Q2300/47—Direct command from other road users, i.e. the command for switching or changing the beam is sent by other vehicles or road devices
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/16—Anti-collision systems
    • G08G1/161—Decentralised systems, e.g. inter-vehicle communication

Definitions

  • Present invention concerns a method and device for automatic control of light equipment on vehicles, according to the introductory part of Claims 1 and 6, respectively.
  • the simplest systems comprise a light detector that detects the main beam of the oncoming vehicle, and dipping on basis of light inten ⁇ sity and/or the waveform of the beam of light. This does not include a set of criteria that are sufficient for correct dipping. If the oncoming vehicle has extra main beam, it will be dipped far too early. In more developed system for automatic dipping is used the infrared part of the light spectrum from the oncoming vehicle. In such a solution it is avoided that extra main beam give fault information to the automatic device.
  • the emission of IR-light from the main beam is being reduced to a little above the emission from the rear lights, for example in the relationship 100:15. It is neces ⁇ sary that all vehicles are equipped with filters at the main beam, which represent a considerable disadvantage in this system. Furthermore, it is not considered vehicles that do not have halogen lamps in the rear lights; this will have a reduced light inten ⁇ sity over a certain time. Dirty rear lights will also disturb the operation. There are considerable disadvantages in using the beam of the oncoming vehicles to calculate when own vehicle should dip. This fact is, among other things, due to the great variation in the emission of light from the main beam of the vehicles. The reflectors loose gradually their reflecting abilities, the glasses are getting worn, and in addition there are variations from one type of vehicle to another. Other factors are the condition of the light bulb, and the size of the input voltage.
  • Low energy sources will replace the halogen based light sources of today.
  • Low energy sources have less use of energy and longer life than light bulbs of today. This is achieved by the infrared part of the light being substantially reduced. Thus the use of main beam as IR-source is made further difficult.
  • An IR-based light control system should therefore be self-contained with IR-light.
  • Fig. 1 shows a sketch of an automatic lights control system according to present invention, with two oncoming cars, of which one is fully equipped with automatic control, and the other is equipped with reflectors,
  • Fig. 2 shows a first curve of a signal emitted by a system according to present invention
  • Fig. 3 shows another curve of a signal emitted by a system according to present invention
  • Fig. 4 shows a third curve of signal emitted by system according to present invention
  • Fig. 5-10 shows use of lights equipment in vehicles in different traffic situations where present invention is being used.
  • Fig. 1 two oncoming vehicles A and B, where vehicle A is fully equipped with automatic lights control, and vehicle B is equipped with ref ⁇ lectors.
  • vehicle A is schematically shown the different components of the equip ⁇ ment.
  • a transceiver 1 is mounted to the windscreen of the vehicle A, in principle in the height of the driver's head.
  • a corresponding transceiver (not shown) is also mounted to the back window of the vehicle, preferably included in high brake lights.
  • the transmitter part of the transceiver 1 emits light signals in the infrared area, shown in Fig. 1 with a light cone 2.
  • the emitted infrared light will spread both in horizontal and vertical plane.
  • the spread in the vertical plane is calculated from desired area of coverage in a per se known manner, where it is also considered that the angle should be limited in order to achieve sufficient luminance.
  • the horizontal angle is calculated from a model for correct use of the main beam.
  • the change from dipped beam to main beam should be performed in a distance corresponding to the length of two cars, which is approximately 11 m.
  • the angle will become:
  • the calculation is valid for the angle with one of the sides. In order to cover both sides the angle should be doubled, which gives approximately 40° .
  • the distance for change from dipped beam to main beam is also set to approximately 11 m when passing of vehicles.
  • the receiver part of the transceiver 1 comprises two detectors, one for infrared light and one for visible light.
  • Vehicle B is shown in Fig. 1 with a retroreflective reflector 4, which provides a reflected signal back to the transceiver 1 at vehicle A.
  • Rear and forward reflector should be adapted to the relationship between desired dipping by vehicles approaching from forward, or vehicles approaching from behind. This relationship should be approximately 2: 1. Experiments have shown that correct distance for dipping is in the area of 250-400 m. This distance should be tried in practice.
  • a dipping distance of approximately 400 m when vehicles meet, and app ⁇ roximately 200 m when vehicles are caught up with, can be an applicable basis. It should be taken into consideration that different types of cars have different inclin- ation of the windscreen and the back window.
  • the reflectors should be adapted thereto. Particularly the back windows are different, from almost vertical windows (estate cars and vans) to more horizontal windows in some saloon cars. This inclin ⁇ ation affects the reflective ability by the effective area becoming different. Installation of reflector on the back window only applies to private car without trailer.
  • the reflector can, e.g. , be arranged on an external mir ⁇ ror. The point is that the reflector is mounted in the eye height of the driver.
  • the transceiver 1 is connected to an electronic logical unit 5, which by means of a relay 6 controls the switching between dipped beam and main beam.
  • a modulated infrared light signal 2 emitted from the transmitter part of the transceiver 1.
  • This light signal will be reflected from other vehicles, which are equipped with reflectors, either oncoming vehicles having reflectors on the wind ⁇ screen, or vehicles caught up with, having reflectors on the back window.
  • the ref ⁇ lected light signal 3 is detected by the receiver part of the transceiver 1.
  • the electronic unit 5 cause the vehicle to dim its main beam. The level of this intensity is adjustable, and is determined by the strength of own main beam.
  • the signal is ana- lyzed in order to determine if it is a signal from a different vehicle equipped with a similar system.
  • the oncoming vehicle B may transmit a message that it is dazzled, and the vehicle A should in that case dim its main beam.
  • the system may modulate emitted light signal in different ways, dependent upon the optimal conditions.
  • Modulations of current interest are PPM (Pulse Position Modulation), PWM (Pulse Width Modulation), PDM (Pulse Duration Modulation) or FM (Frequency Modulation).
  • PPM Pulse Position Modulation
  • PWM Pulse Width Modulation
  • PDM Pulse Duration Modulation
  • FM Frequency Modulation
  • different messages may be given.
  • Fig. 2-4 are shown examples of different frequency modulations of the emitted signal. This is only an example; modulation and type of signals emitted for different messages may be varied from what is most suitable for the purpose.
  • Fig. 2 is shown the normal condition to emitted IR-signal, a saw-tooth modu ⁇ lation having increasing frequency. If the system registrate dazzling from an oncom ⁇ ing vehicle, the signal is changed to what is shown in Fig. 4, a saw-tooth modulation having decreasing frequency. This signal implies instruction to the oncoming vehicle to dim. If oncoming vehicle only have reflectors mounted, the system will registrate reflection a reflection of its own emitted signal. This means that the oncoming vehicle is in danger of being dazzled, and the system will change from main beam to dipped beam. Irrespective of the waveform of the reflected signal, the system will dim at received reflection. In order to the signal being interpreted as reflector, the received signal should have the same waveform and phase.
  • Fig. 4 is shown the waveform that is emitted when the vehicle drives with dip ⁇ ped beam.
  • the vehicle initially emits the waveform shown in Fig. 2 or Fig. 3, and then dims, the waveform will change to what is shown in Fig. 4.
  • the system detects IR-light of known waveform, which is not reflected by own beam, the signal will be interpreted, and action will be taken according to the following: Message (Fig. no.) Action
  • the transceiver 1 is also equipped with a detector, detecting visible light. If this detector registrate ambient light above a certain intensity, the system will automat- ically change to dipped beam. This action will be performed along distances having sufficiently strong road illumination, or in daylight.
  • vehicle B is equipped with a means for automatic light control, while other vehicles are equipped with reflector.
  • the situation is driving in a two-lane road with oncoming traffic.
  • fig. 5 is vehicle A approaching vehicle B.
  • B will detect the IR-reflector of vehicle A, and thus change to dipped beam.
  • vehicle B When vehicle A is outside the infrared horizontal detection area of vehicle B, vehicle B will auto ⁇ matically switch to the main beam.
  • vehicle B In fig. 6 and 7, vehicle B reaches vehicle A. In a certain distance, vehicle B will detect the IR-reflector of vehicle A, and change to dipped beam (fig. 6). When A is outside the IR detection area of vehicle B, B will automatically switch to main beam.
  • Fig. 8 illustrates that by an encounter of more vehicles, vehicle B will not switch to main beam before last vehicle has past out of the detection area of B. The system will also detect vehicles that meet in a turn. This situation is shown in fig. 9. If vehicle A has automatic lights control, it will drive with the main beam as long as vehicle D is outside the detection area.
  • fig. 10 is illustrated a situation where the driver of vehicle B could be dazzled by vehicle A, as the main beam of vehicle B are hidden by a hilltop and the driver in vehicle A is then inhibited to registrate vehicle B.
  • the IR-reflector of B is mounted in the eye-height of the driver, and will reflect the IR-light back to A, which will dim in a correct distance before the driver in vehicle ⁇ is dazzled.
  • the reflector can be made compulsory for all vehicles by being given away for free by the road authorities, for example as a receipt for paid road toll or as a doc ⁇ umentation that the vehicle should not pay such toll.
  • the reflector should then be equipped with descriptive print (text + logo), and the registration number of the vehicle.
  • the print side is the glue side of the reflector.
  • the print should be provided in such a way that it does not hinder IR-reflection.
  • the reflector should be made optimal for IR-light, but it should also be appreciated to make it reflective for visible light. In this way all vehicles will have a reflector also in front. Vehicles will then be easier visible, for example when parking in the edge of the road, which will increase traffic security.
  • the disclosed system presupposes that every vehicle either has this system instal ⁇ led, or at least is equipped with a retroreflective reflector in the eye height of the driver, preferably on the windscreen and back window.
  • a system having communication between vehicles by modulated infrared signals can also be used to a number of different objectives then what is concerned use of lights.
  • An example can be signals for ensuring a certain distance between vehicles. Especially in a queue it can be useful, as a signal containing a message about break ⁇ ing can be transmitted backwards in a queue from vehicle to vehicle.
  • emergency vehicles can transmit special signals, alerting emergency.
  • In tunnels it can be arranged certain IR-lighthouses, which for example can transmit catastrophe alarm to all vehicles simultanuosly.
  • the reflector is clean.
  • the cleaning When mounted on the inside of the windscreen the cleaning will be caused, among other things, by the wiper of the vehicle. By coating or wear on the wind- screen, less IR-light will be reflected, and danger of dazzling will be increased cor ⁇ respondingly. This will motivate to keep the windscreen clean and perfect, which is an important traffic security measure independent of present invention.
  • the demand for cleanness also applies to the reflector mounted on the back window. Cars that are exposed to dirt on the back window often have a rear wiper, and the reflector should be situated within the area of this rear wiper.
  • the cleaning When mounted on the side mirror, for example on trucks, the cleaning can be done in a simple manner from the driver's cab. If the reflector is distributed in connection with paid road toll, the reflector will be renewed annually. This will inhibit problems that can be caused by age of the reflector material due to sunlight, etc.

Abstract

L'invention se rapporte à un procédé et un dispositif d'échange automatique de messages entre des véhicules (A, B), par exemple pour commander automatiquement le dispositif lumineux. Au moins un premier véhicule (A) est équipé d'une installation comprenant au moins une unité (1) réceptrice de lumière infrarouge. L'unité (1) est connectée à une unité logique électronique (5), elle-même connectée à une installation de commande des sytèmes de sécurité pour les feux, les freins etc. du premier véhicule, et/ou une installation d'affichage destinée au conducteur de ce dernier. Au moins un réflecteur rétroréfléchissant est installé dans le second véhicule (B). Le premier véhicule (A) est pourvu d'une unité qui module le signal infrarouge (2) de différentes façons et à différentes fins, et qui transmet ledit signal (2), ce dernier étant détecté par le second véhicule (B). La lumière incidente détectée (3) est interprétée au niveau de l'unité logique (5) et toute action requise est effectuée au niveau du premier véhicule (A).
PCT/NO1994/000132 1993-08-06 1994-08-04 Procede et dispositif de commande automatique du dispositif lumineux de vehicules WO1995004670A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU74690/94A AU7469094A (en) 1993-08-06 1994-08-04 Method and device for automatic control of light equipment on vehicles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO932802 1993-08-06
NO932802A NO932802L (no) 1993-08-06 1993-08-06 Framgangsmåte og anordning for automatisk kontroll av lysutstyr på kjöretöy

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Publication Number Publication Date
WO1995004670A1 true WO1995004670A1 (fr) 1995-02-16

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PCT/NO1994/000132 WO1995004670A1 (fr) 1993-08-06 1994-08-04 Procede et dispositif de commande automatique du dispositif lumineux de vehicules

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AU (1) AU7469094A (fr)
NO (1) NO932802L (fr)
WO (1) WO1995004670A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997032749A1 (fr) * 1996-03-07 1997-09-12 Levy, Arnon Dispositif destine a empecher l'aveuglement temporaire de conducteurs
EP1282097A2 (fr) 2001-08-04 2003-02-05 DaimlerChrysler AG Système pour l'amélioration de la vue, en particulier dans des véhicules.
WO2004009403A1 (fr) * 2002-07-24 2004-01-29 Roumen Petkov Systeme de commande de dispositif d'eclairage interactif
EP1392054A2 (fr) * 2002-08-14 2004-02-25 Ford Global Technologies, LLC Système actif de vision nocturne pour véhicule
EP1262795A3 (fr) * 2001-05-31 2004-04-14 DaimlerChrysler AG Procédé et dispositif pour améliorer la visibilité dans un véhicule
DE102008037267A1 (de) 2008-08-11 2010-02-18 GM Global Technology Operations, Inc., Detroit Kraftfahrzeug mit einem Bilderfassungssystem
WO2013127674A3 (fr) * 2012-03-01 2013-12-19 Continental Automotive Gmbh Procédé et dispositif permettant de déterminer l'éblouissement du conducteur d'un véhicule
CN104648230A (zh) * 2015-02-09 2015-05-27 王平安 一种机动车夜间会车自动变光系统及其方法
CN106891801A (zh) * 2015-12-21 2017-06-27 北京奇虎科技有限公司 近远光自动切换方法、装置和汽车
WO2017207185A1 (fr) * 2016-05-30 2017-12-07 Osram Gmbh Procédé de réglage d'une distribution de lumière d'un dispositif d'éclairage, dispositif d'éclairage, dispositif de détection et véhicule

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3604805A (en) * 1969-07-07 1971-09-14 Ford Motor Co Optical detecting and ranging system for automotive vehicles
EP0230620A2 (fr) * 1986-01-18 1987-08-05 Robert Bosch Gmbh Arrangement pour phare de véhicules, en particulier pour véhicules à moteur
EP0481381A1 (fr) * 1990-10-15 1992-04-22 Lectron Products, Inc. Dispositif de réglage automatique des feux d'un véhicule
EP0533508A2 (fr) * 1991-09-19 1993-03-24 Dani Ben-Lulu Dispositif et procédé de commande des phares d'un véhicule

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3604805A (en) * 1969-07-07 1971-09-14 Ford Motor Co Optical detecting and ranging system for automotive vehicles
EP0230620A2 (fr) * 1986-01-18 1987-08-05 Robert Bosch Gmbh Arrangement pour phare de véhicules, en particulier pour véhicules à moteur
EP0481381A1 (fr) * 1990-10-15 1992-04-22 Lectron Products, Inc. Dispositif de réglage automatique des feux d'un véhicule
EP0533508A2 (fr) * 1991-09-19 1993-03-24 Dani Ben-Lulu Dispositif et procédé de commande des phares d'un véhicule

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997032749A1 (fr) * 1996-03-07 1997-09-12 Levy, Arnon Dispositif destine a empecher l'aveuglement temporaire de conducteurs
US6275145B1 (en) 1996-03-07 2001-08-14 Joseph Rogozinski Apparatus to help prevent temporary blinding of drivers
EP1262795A3 (fr) * 2001-05-31 2004-04-14 DaimlerChrysler AG Procédé et dispositif pour améliorer la visibilité dans un véhicule
EP1282097A2 (fr) 2001-08-04 2003-02-05 DaimlerChrysler AG Système pour l'amélioration de la vue, en particulier dans des véhicules.
EP1282097A3 (fr) * 2001-08-04 2004-01-07 DaimlerChrysler AG Système pour l'amélioration de la vue, en particulier dans des véhicules.
WO2004009403A1 (fr) * 2002-07-24 2004-01-29 Roumen Petkov Systeme de commande de dispositif d'eclairage interactif
EP1392054A3 (fr) * 2002-08-14 2004-04-07 Ford Global Technologies, LLC Système actif de vision nocturne pour véhicule
EP1392054A2 (fr) * 2002-08-14 2004-02-25 Ford Global Technologies, LLC Système actif de vision nocturne pour véhicule
DE102008037267A1 (de) 2008-08-11 2010-02-18 GM Global Technology Operations, Inc., Detroit Kraftfahrzeug mit einem Bilderfassungssystem
WO2013127674A3 (fr) * 2012-03-01 2013-12-19 Continental Automotive Gmbh Procédé et dispositif permettant de déterminer l'éblouissement du conducteur d'un véhicule
CN104648230A (zh) * 2015-02-09 2015-05-27 王平安 一种机动车夜间会车自动变光系统及其方法
CN104648230B (zh) * 2015-02-09 2016-11-23 湖南工业大学 一种机动车夜间会车自动变光系统及其方法
CN106891801A (zh) * 2015-12-21 2017-06-27 北京奇虎科技有限公司 近远光自动切换方法、装置和汽车
WO2017207185A1 (fr) * 2016-05-30 2017-12-07 Osram Gmbh Procédé de réglage d'une distribution de lumière d'un dispositif d'éclairage, dispositif d'éclairage, dispositif de détection et véhicule

Also Published As

Publication number Publication date
NO932802L (no) 1995-02-07
NO932802D0 (no) 1993-08-06
AU7469094A (en) 1995-02-28

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