EP1146497A1 - Procédé d'aide à la conduite sécurisée d'un véhicule automobile - Google Patents
Procédé d'aide à la conduite sécurisée d'un véhicule automobile Download PDFInfo
- Publication number
- EP1146497A1 EP1146497A1 EP01400921A EP01400921A EP1146497A1 EP 1146497 A1 EP1146497 A1 EP 1146497A1 EP 01400921 A EP01400921 A EP 01400921A EP 01400921 A EP01400921 A EP 01400921A EP 1146497 A1 EP1146497 A1 EP 1146497A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- border
- zone
- driving assistance
- acquisition
- 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.)
- Granted
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Classifications
-
- 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
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/14—Adaptive cruise control
- B60W30/16—Control of distance between vehicles, e.g. keeping a distance to preceding vehicle
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/166—Anti-collision systems for active traffic, e.g. moving vehicles, pedestrians, bikes
Definitions
- the present invention relates, in general, to a process for providing increased security to motor vehicle drivers.
- the invention relates to a method assistance in the safe driving of a vehicle traveling on a taxiway and comprising a passenger compartment protected by a windshield that allows a driver to receive an image of the taxiway, this method comprising a acquisition procedure consisting in collecting, by measure or estimation, values of physical parameters representing instantaneous rolling conditions of the vehicle, and a processing procedure consisting of combine them, according to physical models preset values collected to locate at least partially a border between an interference zone immediately surrounding the vehicle and an area of safety located at a distance from the vehicle and extending beyond from the hazardous interference zone.
- Driving assistance methods of the above type defined are notably known, especially when use a radar, under the generic designation of “intelligent cruise systems”, and are better known still under the Anglo-Saxon name “Intelligent cruise control ", often abbreviated as” ICC “.
- Such systems mainly dedicated to the vehicle environment monitoring including responsible for the prevention of risks linked to presence fixed or mobile obstacles on the taxiway, are for example described in patent documents EP - 0 720 928, EP - 0 764 279, EP - 0 684 486, US - 5 493 302, EP - 0 706 667, EP - 0 569 095, or also GB - 2 267 544.
- ABS ABS systems to prevent blockage wheels when braking
- ASR ASR systems for avoid wheel spin caused by acceleration excessive with regard to the grip offered by the road.
- the present invention aims to offer a safe driving assistance system likely to bring, on at least some aspects previously mentioned, a real advantage compared to existing systems.
- the method of the invention is essentially characterized in that it includes a viewing procedure including itself a mixing operation consisting of superimposing, like the taxiway received by the driver, a materialization of the border between the interference zone dangerous and safe area, allowing the driver to bring to driving the vehicle in time real and interactively, any own corrective action avoid an obstacle initially visible in the area of security comes to life with an apparent movement that risks bringing it into the hazardous interference zone.
- the mixing operation is implemented by projecting onto the windshield a bright picture of the border between the area dangerous interference and safety zone.
- the method of the invention thus calls upon a known technology, called "head-up" display, in a context which gives it specific advantages and substantial in terms of security.
- the border includes, at least when the vehicle approaches a bend, a side marker defining a vehicle curvature trajectory, and a terminal frontal defining a minimum braking distance of safety on the taxiway.
- One of the advantages of the process of the invention is that it essentially only involves operations that are likely to be already implemented on the vehicle to which it applies, so it only represents a cost moderate differential.
- the procedures for acquiring and processing the process of the invention can, together, be at least partially made up of acquisitions and processing implemented in a process (ICC) aimed at less to control the speed or direction of the vehicle by depending on its environment.
- ICC process
- the procedures for acquiring and processing process of the invention can also, together, be at least partially made up of acquisitions and processing implemented in a process (FDR) aimed at less to dynamically control the stability of the vehicle.
- FDR process
- the procedures for acquiring and processing process of the invention can also, together, be at less partially made up of acquisition operations and treatment implemented in a process (ABS) aimed at least to avoid locking the vehicle wheels.
- ABS a process
- the acquisition procedure may include a navigation data acquisition operation, the treatment procedure then including an operation of navigation data, suitable for modification the border, at a given time, depending on the obstacles the vehicle must meet on the taxiway at a moment later.
- the bright border image is for example formed by illuminating, by a light source, a matrix of mirrors controlled by an electronic addressing circuit, the windshield on which the bright image of the border advantageously presenting, in a vertical plane, a wedge-shaped section.
- the viewing procedure includes preferably a mix control operation to control the mixing operation, and a calibration operation for determine and provide the mixing control operation with geometric parameters allowing to take at least account, for the projection of the bright image of the border, the driver's position relative to the windshield.
- the invention relates to a driving assistance method. secure for a motor vehicle, this vehicle being driven by a conductor K (Figure 3), being designed to drive on taxiway R (figure 2), and conventionally comprising a protected cabin at the front by a transparent windshield W (figure 3), which allows the driver to receive an Img1 image of the circulation R.
- This process first comprises, in a manner known per se, a PAQ acquisition procedure consisting of collecting, by measurement or estimation of values V1 to Vp of parameters which represent instantaneous conditions of vehicle rolling.
- These physical parameters may include in particular the vehicle speed, mass, slip rate of wheels, steering wheel rotation angle, humidity ambient, the vehicle's grip on the ground, the force centrifugal, etc.
- these parameters are preferably those provided, in real time, by help processes to existing driving on the vehicle, such as ICC, FDR, ABS, ASR, or other systems.
- these parameters can at least include parameters available on all vehicles, such as speed, and manufacturer parameters, stored once and for all, such as the empty mass of the vehicle.
- the method of the invention also comprises a PT treatment procedure, which consists of combining between they the values V1 to Vp of the different parameters, according to pre-established physical models.
- the operations of this treatment may include at least some of the operations which are carried out, in real time, by the methods of assistance to existing driving on the vehicle, such as systems ICC, FDR, ABS, ASR, or others.
- processing operations performed by these known systems aim to produce signals, such as E1, E2, E3, E5, E7, Ek, which are used, as part of a PCA actuation control procedure, to control OCA1 actuation control operations, OCA2, OCAn used to directly control organs mechanical or hydraulic components of the vehicle
- the invention does not take into account the order procedure PCA actuation and only includes operations of processing that aim to produce signals, such as E4 to E8, and Ek, which define a spatial boundary F between a Zid hazardous interference zone immediately surrounding the vehicle, and a safety zone Zs which is located distance from the vehicle and which extends beyond the area of dangerous interference Zid.
- the process of the invention does not is interested only in the signals resulting from the procedure of PT processing which are representative of a distance between a obstacle and vehicle, position or orientation relative of an obstacle and the vehicle, and the level of risk associated with the existence of this obstacle, depending on its distance, position or orientation from the vehicle.
- the invention is concerned with signals, resulting from PT processing, which make it possible to define, by means of the F border, the Zid dangerous interference zone defined as one that must remain free from all obstacle so that vehicle safety can be assured.
- the method of the invention comprises a PV display procedure allowing driver K to immediately perceive the border F which separates this Zid dangerous interference zone from Zs safety zone.
- the PV viewing procedure includes a MIX mixing operation which consists of superimposing, the Img1 image of the lane as the driver K receives through the windshield W, a materialization of the border F.
- the conductor K can thus bring to driving his vehicle, in real time and interactively, any corrective action to avoid that an obstacle he initially perceives in the area of security Zs moves, in his field of vision, up to the Zid hazardous interference zone.
- the MIX mixing operation is preferably carried out by projecting a bright image onto the windshield W Img2 of the border F between the interference zone dangerous Zid and the safety zone Zs.
- the bright image Img2 of the border is for example formed by lighting, by a light source SL, a matrix of mirrors MM controlled by an electronic addressing circuit CE, the matrix of mirrors which may consist of the product marketed by the Texas Instruments company under the name of "Digital Mirrors Display ", which includes 800 lines of 600 small mirrors.
- the implementation of the mixing operation MIX may require OCM mix control operation ( Figure 1), suitable for defining the coordinates of the mirrors to command and control the MIX mixing operation by transmitting these coordinates to an electronic circuit of CE addressing.
- the windshield W may receive specific treatment, such as metal deposition, machining, or rolling, these techniques having already been described in the prior art.
- a laminated windshield W which presents, in a vertical plane, a section in the form of corner, and more precisely of a windshield whose faces converge towards each other, downwards, by an angle of a few degrees.
- the border F includes at minus a front terminal BF, which defines a minimum distance safety braking on taxiway R.
- driver K To keep a safe distance between the vehicle that he is following and the vehicle he is driving, driver K must so stay far enough from the vehicle he is following so that the image of the latter always appears above the frontier BF of border F.
- border F may also include, at least when the vehicle is entering a turn, one or two lateral terminals such as BL1 and BL2, used to define a limit curvature path for the vehicle.
- the driver K will therefore have to ensure that its trajectory target is always both on the taxiway R and in the safety zone bordered by the terminal (s) BL1 and BL2, and should therefore avoid having to take a bend with a radius of curvature less than that of the limit curvature trajectory materialized by the or terminals BL1 and BL2.
- the braking distance is defined in front of the vehicle while it varies depending on conditions instantaneous rolling of the latter, and in particular according to that he is driving in a straight line, that he is taking a turn on an ascending slope or on a descending slope, it may be beneficial to have route information traffic ahead of the vehicle to optimize the definition of the border F.
- the PAQ acquisition procedure may, from in a manner known per se, understanding an OANav operation acquisition of navigation data I1 to Iq, for example transmitted by local transmitters installed on the circulation R or extracted from a stored, linked map on-board instrumentation providing the coordinates vehicle snapshots.
- the PT processing procedure includes an operation for using navigation data I1 to Iq, denoted OTNav (FIG. 1) and allowing, at each instant T, to modify the border F according to the obstacles (descents, turns, traffic jams, etc.) that the vehicle must meet on taxiway R at an instant subsequent T + dT.
- OTNav navigation data I1 to Iq
- the PV viewing procedure can understand ( Figure 1) a CAL calibration operation to determine and provide the OCM mix control operation geometric parameters G1 to Gt making it possible to take less taken into account, for the projection of the luminous image Img2 of the border F, the position of the conductor K with respect to the windshield W.
- the CAL calibration operation which does not need to be performed only once for a given driver, adopting a given position in a given vehicle, can be triggered at will by conductor K and carried out so automatic.
- the geometric parameters G1 to Gt can be obtained from images of several test borders projected on the windshield W, these images being collected on a miniature camera installed on a spectacle frame worn by the driver during the time of this CAL calibration operation.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Traffic Control Systems (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Instrument Panels (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Lock And Its Accessories (AREA)
- Power Steering Mechanism (AREA)
Abstract
Description
- La figure 1 est un schéma synoptique de l'ensemble du procédé de l'invention, illustrant à la fois des opérations et procédures essentielles, des opérations et procédures optionnelles, et des opérations et procédures connues, externes à l'invention;
- La figure 2 est un schéma illustrant le résultat de la mise en oeuvre du procédé de l'invention; et
- La figure 3 est un schéma représentant un système optique utilisable dans le cadre de l'invention.
Claims (10)
- Procédé d'aide à la conduite sécurisée d'un véhicule roulant sur une voie de circulation (R) et comprenant un habitacle protégé par un pare-brise (W) qui permet à un conducteur (K) de recevoir une image (Img1) de la voie de circulation, ce procédé comprenant une procédure d'acquisition (PAQ) consistant à recueillir, par mesure ou estimation, des valeurs (V1 à Vp) de paramètres physiques représentant des conditions instantanées de roulement du véhicule, et une procédure de traitement (PT) consistant à combiner entre elles, conformément à des modèles physiques préétablis, les valeurs recueillies (V1 à Vp) pour localiser au moins partiellement une frontière (F) entre une zone d'interférence dangereuse (Zid) entourant immédiatement le véhicule et une zone de sécurité (Zs) située à distance du véhicule et s'étendant au-delà de la zone d'interférence dangereuse (Zid), caractérisé en ce qu'il comprend en outre une procédure de visualisation (PV) incluant elle-même une opération de mixage (MIX) consistant à superposer, à l'image (Img1) de la voie de circulation reçue par le conducteur (K), une matérialisation de la frontière (F) entre la zone d'interférence dangereuse (Zid) et la zone de sécurité (Zs), ce qui permet au conducteur (K) d'apporter à la conduite du véhicule, en temps réel et de façon interactive, toute mesure corrective propre à éviter qu'un obstacle initialement visible dans la zone de sécurité (Zs) s'anime d'un mouvement apparent risquant de l'amener jusque dans la zone d'interférence dangereuse (Zid).
- Procédé d'aide à la conduite suivant la revendication 1, caractérisé en ce que l'opération de mixage (MIX) est mise en oeuvre en projetant sur le pare-brise (W) une image lumineuse (Img2) de la frontière (F) entre la zone d'interférence dangereuse (Zid) et la zone de sécurité (Zs).
- Procédé d'aide à la conduite suivant l'une quelconque des revendications précédentes, caractérisé en ce que la frontière (F) entre la zone d'interférence dangereuse (Zid) et la zone de sécurité (Zs) inclut, au moins lorsque le véhicule aborde un virage, une borne latérale (BL1, BL2) définissant une trajectoire de courbure limite du véhicule.
- Procédé d'aide à la conduite suivant l'une quelconque des revendications précédentes, caractérisé en ce que la frontière (F) entre la zone d'interférence dangereuse (Zid) et la zone de sécurité (Zs) inclut une borne frontale (BF) définissant une distance minimum de freinage de sécurité sur la voie de circulation.
- Procédé d'aide à la conduite suivant l'une quelconque des revendications précédentes, caractérisé en ce que les procédures d'acquisition (PAQ) et de traitement (PT) sont, ensemble, au moins partiellement constituées d'opérations d'acquisition (OAQ1 à OAQp; OANav) et de traitement (OT1 à OTm; OTNav) mises en oeuvre dans un procédé (ICC) visant au moins à contrôler la vitesse ou la direction du véhicule en fonction de son environnement.
- Procédé d'aide à la conduite suivant l'une quelconque des revendications précédentes, caractérisé en ce que les procédures d'acquisition (PAQ) et de traitement (PT) sont, ensemble, au moins partiellement constituées d'opérations d'acquisition (OAQ1 à OAQp; OANav) et de traitement (OT1 à OTm; OTNav) mises en oeuvre dans un procédé (CDS ou FDR) visant au moins à contrôler de façon dynamique la stabilité du véhicule.
- Procédé d'aide à la conduite suivant l'une quelconque des revendications précédentes, caractérisé en ce que les procédures d'acquisition (PAQ) et de traitement (PT) sont, ensemble, au moins partiellement constituées d'opérations d'acquisition (OAQ1 à OAQp; OANav) et de traitement (OT1 à OTm; OTNav) mises en oeuvre dans un procédé (ABS) visant au moins à éviter un blocage des roues du véhicule.
- Procédé d'aide à la conduite suivant l'une quelconque des revendications précédentes, caractérisé en ce que la procédure d'acquisition (PAQ) comprend une opération (OANav) d'acquisition de données de navigation (I1 à Iq) et en ce que la procédure de traitement (PT) comprend une opération d'exploitation (OTNav) des données de navigation (I1 à Iq), propre à modifier la frontière (F) , à un instant donné (T), en fonction des obstacles que le véhicule doit rencontrer sur la voie de circulation à un instant ultérieur (T+dT).
- Procédé d'aide à la conduite suivant l'une quelconque des revendications précédentes combinée à la revendication 2, caractérisé en ce que l'image lumineuse (Img2) de la frontière est formée en éclairant, par une source lumineuse (SL), une matrice de miroirs (MM) commandée par un circuit électronique d'adressage (CE), et en ce que le pare-brise (W) sur lequel est projetée l'image lumineuse (Img2) de la frontière est laminé et présente, dans un plan vertical, une section en forme de coin.
- Procédé d'aide à la conduite suivant l'une quelconque des revendications précédentes combinée à la revendication 2, caractérisé en ce que la procédure de visualisation (PV) comprend une opération de commande de mixage (OCM) pour piloter l'opération de mixage (MIX), et une opération de calibrage (CAL) pour déterminer et fournir à l'opération de commande de mixage (OCM) des paramètres géométriques (G1 à Gt) permettant de prendre au moins en compte, pour la projection de l'image lumineuse (Img2) de la frontière, la position du conducteur (K) par rapport au pare-brise (W) .
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0004700 | 2000-04-12 | ||
| FR0004700A FR2807856B1 (fr) | 2000-04-12 | 2000-04-12 | Procede d'aide a la conduite d'un vehicule automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1146497A1 true EP1146497A1 (fr) | 2001-10-17 |
| EP1146497B1 EP1146497B1 (fr) | 2004-01-14 |
Family
ID=8849177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01400921A Expired - Lifetime EP1146497B1 (fr) | 2000-04-12 | 2001-04-10 | Procédé d'aide à la conduite sécurisée d'un véhicule automobile |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1146497B1 (fr) |
| AT (1) | ATE257969T1 (fr) |
| DE (1) | DE60101757T2 (fr) |
| ES (1) | ES2213091T3 (fr) |
| FR (1) | FR2807856B1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1787849A1 (fr) * | 2005-11-22 | 2007-05-23 | Aisin AW Co., Ltd. | Procédé d'assistance à la conduite et appareil d'assistance à la conduite pour véhicule |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010054449B4 (de) | 2010-12-14 | 2018-10-11 | Trw Automotive Electronics & Components Gmbh | Optische Projektionsvorrichtung |
| CN112885080B (zh) * | 2021-01-11 | 2022-06-21 | 重庆长安新能源汽车科技有限公司 | 一种新能源汽车的行驶工况构建方法 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2578797A1 (fr) * | 1985-03-13 | 1986-09-19 | Orega Electro Mecanique | Systeme d'aide a la conduite automobile. |
| US5045856A (en) * | 1988-01-18 | 1991-09-03 | Paoletti Paolo A | Vehicular anticollision radar system for driving in the fog |
| DE4032927A1 (de) * | 1990-10-17 | 1992-04-30 | Bosch Gmbh Robert | Vorrichtung zur verbesserung der sichtverhaeltnisse in einem kraftfahrzeug |
| EP0498416A2 (fr) * | 1991-02-08 | 1992-08-12 | Mitsubishi Denki Kabushiki Kaisha | Dispositif détecteur de distance entre des véhicules |
| JPH04349599A (ja) * | 1991-05-28 | 1992-12-04 | Nissan Motor Co Ltd | 障害物表示装置 |
-
2000
- 2000-04-12 FR FR0004700A patent/FR2807856B1/fr not_active Expired - Fee Related
-
2001
- 2001-04-10 DE DE60101757T patent/DE60101757T2/de not_active Expired - Lifetime
- 2001-04-10 ES ES01400921T patent/ES2213091T3/es not_active Expired - Lifetime
- 2001-04-10 EP EP01400921A patent/EP1146497B1/fr not_active Expired - Lifetime
- 2001-04-10 AT AT01400921T patent/ATE257969T1/de not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2578797A1 (fr) * | 1985-03-13 | 1986-09-19 | Orega Electro Mecanique | Systeme d'aide a la conduite automobile. |
| US5045856A (en) * | 1988-01-18 | 1991-09-03 | Paoletti Paolo A | Vehicular anticollision radar system for driving in the fog |
| DE4032927A1 (de) * | 1990-10-17 | 1992-04-30 | Bosch Gmbh Robert | Vorrichtung zur verbesserung der sichtverhaeltnisse in einem kraftfahrzeug |
| EP0498416A2 (fr) * | 1991-02-08 | 1992-08-12 | Mitsubishi Denki Kabushiki Kaisha | Dispositif détecteur de distance entre des véhicules |
| JPH04349599A (ja) * | 1991-05-28 | 1992-12-04 | Nissan Motor Co Ltd | 障害物表示装置 |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 017, no. 210 (P - 1526) 23 April 1993 (1993-04-23) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1787849A1 (fr) * | 2005-11-22 | 2007-05-23 | Aisin AW Co., Ltd. | Procédé d'assistance à la conduite et appareil d'assistance à la conduite pour véhicule |
| US8073574B2 (en) | 2005-11-22 | 2011-12-06 | Aisin Aw Co., Ltd. | Driving assist method and driving assist apparatus for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| DE60101757D1 (de) | 2004-02-19 |
| FR2807856B1 (fr) | 2002-07-26 |
| DE60101757T2 (de) | 2004-12-02 |
| ES2213091T3 (es) | 2004-08-16 |
| FR2807856A1 (fr) | 2001-10-19 |
| ATE257969T1 (de) | 2004-01-15 |
| EP1146497B1 (fr) | 2004-01-14 |
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