EP1940649A2 - System zur unterstützung beim fahren eines fahrzeugs bei nebel und/oder unebener fahrbahn - Google Patents

System zur unterstützung beim fahren eines fahrzeugs bei nebel und/oder unebener fahrbahn

Info

Publication number
EP1940649A2
EP1940649A2 EP06809498A EP06809498A EP1940649A2 EP 1940649 A2 EP1940649 A2 EP 1940649A2 EP 06809498 A EP06809498 A EP 06809498A EP 06809498 A EP06809498 A EP 06809498A EP 1940649 A2 EP1940649 A2 EP 1940649A2
Authority
EP
European Patent Office
Prior art keywords
vehicle
laser
project
laser beam
road surface
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.)
Ceased
Application number
EP06809498A
Other languages
English (en)
French (fr)
Inventor
Bruno Dalla Chiara
Giuseppe Cannata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Politecnico di Torino
Original Assignee
Politecnico di Torino
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 Politecnico di Torino filed Critical Politecnico di Torino
Publication of EP1940649A2 publication Critical patent/EP1940649A2/de
Ceased legal-status Critical Current

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
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other 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
    • 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
    • B60Q1/18—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 being additional front lights
    • B60Q1/20—Fog lights
    • 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
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/44—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal
    • B60Q1/445—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal controlled by inertial devices
    • B60Q1/447—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal controlled by inertial devices with indication of the braking strength or speed changes, e.g. by changing the shape or intensity of the indication
    • 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
    • B60Q5/00—Arrangement or adaptation of acoustic signal devices
    • 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
    • B60Q2400/00—Special features or arrangements of exterior signal lamps for vehicles
    • B60Q2400/50—Projected symbol or information, e.g. onto the road or car body

Definitions

  • the present invention relates to a system for assisting in vehicle driving in presence of fog and/or on irregular roads.
  • the fog density is normally rather uniform up to some centimetres far from the pavement surface, for example made of asphalt .
  • the fog density decreases close to the pavement until it nearly completely disappears on the asphalt .
  • the reason for such a phenomenon is the condensation of the moisture particles, which remain in suspension in the air where the temperature is neither high enough to cause them to evaporate nor low enough to cause them to pass to the liquid state close to a surface suitable for changing their physical state.
  • Figure 1 shows a front view of a vehicle equipped with a system according to the present invention
  • Figure 2 represents the vehicle • of Figure 1 in rear view
  • Figure 3 shows the situation of a heavy vehicle preceding a light vehicle, both the vehicles being equipped with systems according to the invention.
  • Figure 4 represents a schematic view from above of vehicles equipped with systems according to the invention in presence of narrow bends .
  • a vehicle for example a motor-vehicle, equipped with a system according to the invention is generally indicated 2.
  • the vehicle is provided with lighting devices according to the law.
  • the vehicle 2 is provided on the front part with a front laser light emitter 4 and on the rear part with rear laser light emitters 6 and 8.
  • the laser light emitters 4, 6 and 8 are arranged to emit visible laser light onto the road surface, either at a predefined distance D from the source, for example approximately ranging between 20 and 25 meters, or at a variable distance depending on the vehicle speed.
  • the projection of the laser beam on the road surface can be indicative of the kind of vehicle that emits it .
  • the front laser beam and the rear one can for example emit a circular projection in case of motor-vehicles and a rectangular one in case of lorries or heavy vehicles in general .
  • These projections are generated by the front emitter 4 and by one of the two rear emitters, for example the one indicated 6.
  • the other rear emitter in the illustrated example the emitter 8, is triggered contemporaneously with the brake actuation so as to show that the vehicle is braking.
  • the beam projection will have a different shape from the above-mentioned ones, for example a triangular shape.
  • a vehicle 2 typically a motor- vehicle, is proceeding in the same direction as a lorry 10, also provided with the driving assist system according to the invention.
  • the warning that the preceding vehicle- is braking allows the drivers to drive in column even though the vehicles and their lights are not visible.
  • the variation of distance between the projection points of two vehicles following one another allows to inform the driver of the following vehicle of any variation in the road path. For example, if the preceding vehicle travels on a short bump, the driver of the following vehicle will see an oscillating projection of the laser beam emitted, by the rear emitter 6 of the preceding vehicle.
  • the device may also contribute to driving safety. It is in fact possible, when approaching a bend, to perceive the arrival of a vehicle in the same driving direction and possibly to deduce if it is a car or a heavy vehicle.
  • the first vehicle which encounters the obstacle along its running direction - both when it is able to stop at a distance from the obstacle and when it crashes against the obstacle, unless this does not result in an overturning or in a horizontal rotation of its longitudinal axis - will project the laser beam emitted by the rear emitter 6 to the advantage of the drivers of the vehicles which follow the stopped vehicle. These will be able, in fact, to see the projections on the asphalt and to start braking .
  • the system according to the invention can be used as a warning system to inform at night that a vehicle is arriving.
  • the drivers With the headlights switched on full beam, it is customary for the drivers to cause the headlights on full beam to flash, that is to say, to switch these headlights on and off repeatedly, in order to inform a driver of having left the headlights switched on full beam.
  • This behaviour represents however a disturbing factor to the driver.
  • an acoustical emergency signal is generated in case of a deceleration (following a braking) higher than a predefined threshold.
  • Such a deceleration can be detected, for example, by an accelerometer .
  • the intensity and/or the colour of the laser emission may be varied in case of strong braking actions detected for example by an accelerometer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
EP06809498A 2005-10-05 2006-10-04 System zur unterstützung beim fahren eines fahrzeugs bei nebel und/oder unebener fahrbahn Ceased EP1940649A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO20050694 ITTO20050694A1 (it) 2005-10-05 2005-10-05 Sistema a luci laser posizionate su veicoli per la guida stradale sicura in presenza di nebbia e/o di tracciati non lineari
PCT/IB2006/053632 WO2007039877A2 (en) 2005-10-05 2006-10-04 System for assisting in vehicle driving in presence of fog and/or on irregular roads

Publications (1)

Publication Number Publication Date
EP1940649A2 true EP1940649A2 (de) 2008-07-09

Family

ID=37834156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06809498A Ceased EP1940649A2 (de) 2005-10-05 2006-10-04 System zur unterstützung beim fahren eines fahrzeugs bei nebel und/oder unebener fahrbahn

Country Status (3)

Country Link
EP (1) EP1940649A2 (de)
IT (1) ITTO20050694A1 (de)
WO (1) WO2007039877A2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2967625B1 (fr) * 2010-11-22 2012-11-09 Peugeot Citroen Automobiles Sa Vehicule comprenant une source lumineuse de projection d'une information sur le sol devant le vehicule
CN103481818A (zh) * 2013-10-16 2014-01-01 北京大学东莞光电研究院 智能高位激光高位刹车灯
AU2015238339B2 (en) 2014-03-25 2018-02-22 Jaguar Land Rover Limited Navigation system
GB2524514B (en) * 2014-03-25 2017-08-16 Jaguar Land Rover Ltd Navigation system
FR3066306B1 (fr) * 2017-05-09 2023-03-10 Renault Sas Avertisseur laser anti-collision adaptatif

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6819234B1 (en) * 2003-05-13 2004-11-16 Lawrence Bunker Vehicle braking system safety enhancements

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06270752A (ja) * 1993-03-17 1994-09-27 Mazda Motor Corp 車両の安全装置
DE4402661A1 (de) * 1994-01-29 1995-08-03 Thomas Bleiner Einrichtung zum Signalgeben eines Fahrzeugs
DE19845332A1 (de) * 1998-10-01 2000-04-13 Kai Winkler Visuelle Bremsweg- und Breitenanzeige bei Fahrzeugen
FR2816264B1 (fr) * 2000-11-09 2003-02-21 Thomas Bleiner Dispositif de signalisation visuelle adaptable a un vehicule
US6883947B1 (en) * 2003-04-07 2005-04-26 Maribel Sarabia Automotive laser illumination module and system
JP4729905B2 (ja) * 2004-11-17 2011-07-20 アイシン・エィ・ダブリュ株式会社 車両報知装置及びプログラム

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6819234B1 (en) * 2003-05-13 2004-11-16 Lawrence Bunker Vehicle braking system safety enhancements

Also Published As

Publication number Publication date
WO2007039877A2 (en) 2007-04-12
WO2007039877A3 (en) 2007-07-05
ITTO20050694A1 (it) 2007-04-06
WO2007039877A8 (en) 2007-09-07

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