EP1237750A1 - Method for indicating a motor vehicle change of direction and device therefor - Google Patents
Method for indicating a motor vehicle change of direction and device thereforInfo
- Publication number
- EP1237750A1 EP1237750A1 EP01976428A EP01976428A EP1237750A1 EP 1237750 A1 EP1237750 A1 EP 1237750A1 EP 01976428 A EP01976428 A EP 01976428A EP 01976428 A EP01976428 A EP 01976428A EP 1237750 A1 EP1237750 A1 EP 1237750A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- speed
- wheels
- threshold value
- steering angle
- 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.)
- Withdrawn
Links
Classifications
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- 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
- B60Q1/34—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 change of drive direction
- B60Q1/346—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 change of drive direction with automatic actuation
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- 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
- B60Q1/34—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 change of drive direction
- B60Q1/38—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 change of drive direction using immovably-mounted light sources, e.g. fixed flashing lamps
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- 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
- B60Q1/34—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 change of drive direction
- B60Q1/40—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 change of drive direction having mechanical, electric or electronic automatic return to inoperative position
Definitions
- the invention relates to a method for indicating the change of direction of a motor vehicle, as well as to a device for implementing the method.
- the invention relates more particularly to a method for indicating the change of direction of a motor vehicle, comprising detecting the steering angle of the wheels of the vehicle with a view to automatically switching on the light means for indicating the change of direction.
- the automatic ignition devices of the direction indicators of the prior art are not entirely satisfactory. Indeed, these devices can cause unnecessary untimely ignitions and are not sufficiently adapted to the operating conditions of the vehicle.
- An object of the present invention is to provide a method for indicating the change of direction of a motor vehicle, overcoming all or part of the drawbacks of the prior art noted above.
- the method for indicating the change of direction of a motor vehicle consists in detecting the steering angle of the wheels of the vehicle with a view to automatically switching on the luminous means for indicating the change of direction. , and includes a step of detecting the presence of another adjacent vehicle and / or crossing a line of marking on the ground separating lanes, and in that, when the steering angle of the wheels is greater than a determined threshold value and the presence of an adjacent vehicle and / or the crossing of a lane separation line is detected , the corresponding direction change indication light means are switched on automatically.
- the invention may include one or more of the following characteristics:
- the method comprises a step of measuring the speed of the vehicle and a step of determining the threshold value of the steering angle as a function of the speed of the vehicle,
- the threshold value of the steering angle of the wheels is substantially equal to a first determined constant value
- the threshold value of the steering angle of the wheels decreases when the vehicle speed increases
- the threshold value of the steering angle of the wheels is substantially equal to a second determined constant value
- Another object of the invention is to propose a device for indicating the change of direction of a motor vehicle for implementing the method according to any one of the preceding characteristics. This object is achieved by the fact that the device for indicating the change of direction of a motor vehicle comprises light signaling means, means for acquiring data relating to the operating conditions of the vehicle capable of determining the deflection.
- the data acquisition means are capable of detecting the presence or not of another adjacent vehicle and / or the crossing of a line of marking on the ground separating traffic lanes, to ensure the automatic lighting of the light signaling means when the turning angle of the wheels is greater than a determined threshold value and that the presence of an adjacent vehicle and / or the crossing of a lane separation line is detected.
- the invention may include one or more of the following characteristics:
- the data acquisition means are capable of determining the speed of the vehicle, and in that the supply voltage control means determine the threshold value of the steering angle of the wheels as a function of the speed of the vehicle,
- the means for acquiring data relating to the operating conditions of the vehicle comprise detection means of the radar type, for detecting the possible presence of another adjacent vehicle,
- the means for acquiring data relating to the operating conditions of the vehicle include means for receiving information representative of the state of road traffic transmitted by satellite-type transmission means, to detect the possible presence of a other adjacent vehicle,
- the means for acquiring data relating to the conditions of operation of the vehicle include means for detecting the position of the vehicle with respect to the lines of marking on the ground separating the traffic lanes, such as transmission and reception means infrared, to detect the possible crossing of these by the vehicle.
- FIG. 1 represents a top view of a motor vehicle comprising light means for indicating a change of direction
- FIG. 2 schematically represents the structure and the operation of a device for indicating the change of direction according to the invention
- FIG. 3 shows a curve illustrating the variation according to the invention of a turning threshold of the vehicle wheels as a function of the speed of the vehicle.
- the vehicle 1 illustrated in FIG. 1 comprises means 2, 12 intended to indicate a change of direction by the generation of light signals 9.
- the means 2, 12 for indicating a change of direction may consist of flashing lamps.
- These flashing lights 2, 12 can be located at the front, at the rear and possibly in the central part of the vehicle 1 in the form of side repeaters.
- the device for indicating a change of direction comprises means 5, 6, 7, 8, 10 for acquiring data relating to the operating conditions of the vehicle. These data acquisition means are connected to means 4, 3 for controlling the supply voltage of the light signaling means 2, 12.
- the electronic architecture of the lighting device can be a multiplexed architecture, for example of the VAN or CAN type.
- the means 3, 4 for controlling the lighting of the flashing lamps 2, 12 comprise a control computer 4, for example the Intelligent Service Unit (BSI) of the vehicle.
- BSI Intelligent Service Unit
- the means 5, 6, 7, 8, 1 0 for acquiring data relating to the operating conditions of the vehicle are connected to the control computer 4.
- the control computer 4 is connected, via a bus 1 1, to an actuator 3 capable of supplying or not supplying a supply voltage to the means 2, 12 for light indication.
- the actuator 3 is connected, by means of a first line 13, to the flashing lamps 2 located on the same side of the vehicle 1.
- the actuator 3 is also connected, by means of a second line 14, to the flashing lamps 12 located on the other side of the vehicle.
- the means for acquiring data relating to the operating conditions of the vehicle comprise means for measuring the steering angle of the wheels, such as a steering wheel angle sensor 5.
- the data acquisition means also comprise means 6 for detecting the presence or not of another adjacent vehicle located upstream and / or behind and / or laterally with respect to the vehicle 1.
- the computer 4 controls the actuator 3 to automatically turn on the indicators 2 , 12 lights located on the side of the vehicle corresponding to the steering of the wheels.
- the means 6 for detecting the presence of an adjacent vehicle may consist, for example, of a radar system such as that of an anti-collision device. Conventionally, these anti-collision systems are arranged in the front and rear parts of the vehicle to detect the presence and the distance of the vehicles, located upstream and / or downstream and possibly laterally, by using the phenomenon of reflection of the radar waves.
- the means for detecting the presence of an adjacent vehicle may consist of any other equivalent device such as, for example, a system 7 for receiving information representative of the state of road traffic emitted by means of broadcast such as a satellite. That is to say that the control computer 4 can be informed of the possible presence of an adjacent vehicle by means of satellite information such as a "GPS".
- the threshold angle E1 of the wheel turning necessary to cause the automatic lighting means 2, 12 of light signaling is, for example, between 10 and 40 degrees and preferably equal to about 30 degrees.
- the data acquisition means comprise means 10 for determining the speed V of the vehicle, such as a speed sensor.
- the threshold angle E1 of the steering wheel necessary for the automatic ignition of the direction indication means 2, 12 can vary as a function of the speed V of the vehicle.
- Figure 3 illustrates an example of variation of the threshold angle
- the threshold value E1 of the steering angle of the wheels is substantially equal to a first determined constant value ⁇ 2.
- the first speed V1 is substantially equal to 20 km / h.
- the first constant value ⁇ 2 is between 20 and 40 degrees and preferably of the order of 30 degrees.
- the threshold value E1 of the steering angle of the wheels decreases when the speed V of the vehicle increases.
- the second speed V2 is for example between 40 and 60km / h approximately and is preferably equal to 50km / h.
- the threshold turning angle E1 is inversely proportional to the speed V of the vehicle between the first V1 and second speeds V2.
- the threshold value E1 of the steering angle of the wheels is substantially equal to a second constant value determined ⁇ 1.
- the second constant ⁇ 1 is, for example, between 5 and 20 degrees and preferably equal to 10 degrees.
- the threshold value E1 of the steering angle of the wheels can increase when the speed of the vehicle increases.
- the threshold turning angle E1 increases linearly with the speed of the vehicle.
- the device according to the invention thus makes it possible to effectively signal changes of direction of a vehicle, while adapting to the conditions of use of the vehicle.
- the device according to the invention may include means 8 for detecting the position of the vehicle 1 relative to the marking lines on the ground separating the traffic lanes.
- These detection means 8 are in particular capable of detecting the possible crossing of these lines by the vehicle.
- these detection means 8 can consist of a system for emitting infrared waves and for receiving waves reflected by the ground, such as that described in document EP 860001. In this way, when the crossing, even partial, of a marking line on the ground is detected, or when the vehicle comes too close to it and the steering angle of the wheels is greater than the threshold E1, the computer 4 controls the automatic switching on of the corresponding signaling means 2, 12. As a variant, the infrared detection means 8 can also ensure the detection of the presence of an adjacent vehicle.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention concerns a method for indicating a motor vehicle change of direction, which consists in detecting the vehicle steering angle (1) so as to automatically switch on lighting means (2, 12) indicating change of direction. The invention is characterised in that it comprises a step which consists in detecting the presence of another adjacent vehicle and/or the crossing of a ground line marking separating traffic lanes, and, when the steering angle is greater than a specific threshold value (E1) and the presence of an adjacent vehicle and/or the crossing of a line separating traffic lanes is detected, the corresponding lighting means (2, 12) indicating change of direction are automatically switched on. The invention also concerns a device for implementing the method.
Description
Procédé d'indication du changement de direction d'un véhicule automobile et dispositif de mise en œuyre du procédé Method for indicating the change of direction of a motor vehicle and device for implementing the method
L'invention se rapporte à un procédé d'indication du changement de direction d'un véhicule automobile, ainsi qu'à un dispositif de mise en œuvre du procédé.The invention relates to a method for indicating the change of direction of a motor vehicle, as well as to a device for implementing the method.
L'invention concerne plus particulièrement un procédé d'indication du changement de direction d'un véhicule automobile, consistant à détecter l'angle de braquage des roues du véhicule en vue d'allumer automatiquement des moyens lumineux d'indication de changement de direction.The invention relates more particularly to a method for indicating the change of direction of a motor vehicle, comprising detecting the steering angle of the wheels of the vehicle with a view to automatically switching on the light means for indicating the change of direction.
Il est connu, notamment par le document US 5673019, un dispositif commandant l'allumage automatique des indicateurs lumineux de direction d'un véhicule en fonction de l'angle de braquage des roues. Le dispositif décrit dans ce document est caractérisé par le fait que l'allumage des indicateurs de direction est proportionnelle à l'angle de braquage des roues.It is known, in particular from document US 5673019, a device controlling the automatic lighting of the light direction indicators of a vehicle as a function of the steering angle of the wheels. The device described in this document is characterized in that the lighting of the direction indicators is proportional to the steering angle of the wheels.
Cependant, les dispositifs d'allumage automatique des indicateurs de direction de l'art antérieur ne donnent pas entière satisfaction. En effet, ces dispositifs peuvent provoquer des allumages intempestifs inutiles et ne sont pas suffisamment adaptées aux conditions de fonctionnement du véhicule.However, the automatic ignition devices of the direction indicators of the prior art are not entirely satisfactory. Indeed, these devices can cause unnecessary untimely ignitions and are not sufficiently adapted to the operating conditions of the vehicle.
Un but de la présente invention est de proposer un procédé d'indication du changement de direction d'un véhicule automobile, palliant tout ou partie des inconvénients de l'art antérieur relevés ci-dessus.An object of the present invention is to provide a method for indicating the change of direction of a motor vehicle, overcoming all or part of the drawbacks of the prior art noted above.
Ce but est atteint par le fait que le procédé d'indication du changement de direction d'un véhicule automobile consiste à détecter l'angle de braquage des roues du véhicule en vue d'allumer automatiquement des moyens lumineux d'indication de changement de direction, et comporte une étape de détection de la présence d'un autre véhicule adjacent et/ou le franchissement d'une ligne de marquage au sol séparant des
voies de circulation, et en ce que, lorsque l'angle de braquage des roues est supérieur à une valeur seuil déterminée et que la présence d'un véhicule adjacent et/ou le franchissement d'une ligne de séparation des voies de circulation est détecté, les moyens lumineux d'indication de changement de direction correspondants sont allumés automatiquement.This object is achieved by the fact that the method for indicating the change of direction of a motor vehicle consists in detecting the steering angle of the wheels of the vehicle with a view to automatically switching on the luminous means for indicating the change of direction. , and includes a step of detecting the presence of another adjacent vehicle and / or crossing a line of marking on the ground separating lanes, and in that, when the steering angle of the wheels is greater than a determined threshold value and the presence of an adjacent vehicle and / or the crossing of a lane separation line is detected , the corresponding direction change indication light means are switched on automatically.
Par ailleurs, l'invention peut comporter l'une ou plusieurs des caractéristiques suivantes :Furthermore, the invention may include one or more of the following characteristics:
- le procédé comporte une étape de mesure de la vitesse d u véhicule et une étape de détermination de la valeur seuil de l'angle de braquage en fonction de la vitesse du véhicule,the method comprises a step of measuring the speed of the vehicle and a step of determining the threshold value of the steering angle as a function of the speed of the vehicle,
- lorsque la vitesse du véhicule est inférieure ou égale à une première vitesse déterminée, la valeur seuil de l'angle de braquage des roues est sensiblement égale à une première valeur constante déterminée,- when the vehicle speed is less than or equal to a first determined speed, the threshold value of the steering angle of the wheels is substantially equal to a first determined constant value,
- lorsque la vitesse du véhicule est comprise entre la première vitesse et une seconde vitesse déterminée supérieure à la première vitesse, la valeur seuil de l'angle de braquage des roues décroît lorsque la vitesse du véhicule croît,- when the vehicle speed is between the first speed and a second determined speed greater than the first speed, the threshold value of the steering angle of the wheels decreases when the vehicle speed increases,
- lorsque la vitesse du véhicule est comprise entre la seconde vitesse et une troisième vitesse déterminée supérieure à la seconde vitesse, la valeur seuil de l'angle de braquage des roues est sensiblement égale à une seconde valeur constante déterminée,when the speed of the vehicle is between the second speed and a third determined speed greater than the second speed, the threshold value of the steering angle of the wheels is substantially equal to a second determined constant value,
Un autre but de l'invention est de proposer un dispositif d'indication du changement de direction d'un véhicule automobile de mise en œuvre du procédé conforme à l'une quelconque caractéristiques précédentes. Ce but est atteint par le fait que le dispositif d'indication d u changement de direction d'un véhicule automobile comporte des moyens de signalisation lumineux, des moyens d'acquisition de données relatives aux conditions de fonctionnement du véhicule aptes à déterminer le braquage
des roues du véhicule, des moyens de commande de la tension d'alimentation des moyens de signalisation lumineux, les moyens d'acquisition de données sont aptes à détecter la présence ou non d'un autre véhicule adjacent et/ou le franchissement d'une ligne de marquage au sol séparant des voies de circulation, pour assurer l'allumage automatique des moyens de signalisation lumineux lorsque l'angle de braquage des roues est supérieur à une valeur seuil déterminée et que la présence d'un véhicule adjacent et/ou le franchissement d'une ligne de séparation de voies de circulation est détecté.Another object of the invention is to propose a device for indicating the change of direction of a motor vehicle for implementing the method according to any one of the preceding characteristics. This object is achieved by the fact that the device for indicating the change of direction of a motor vehicle comprises light signaling means, means for acquiring data relating to the operating conditions of the vehicle capable of determining the deflection. vehicle wheels, means for controlling the supply voltage of the light signaling means, the data acquisition means are capable of detecting the presence or not of another adjacent vehicle and / or the crossing of a line of marking on the ground separating traffic lanes, to ensure the automatic lighting of the light signaling means when the turning angle of the wheels is greater than a determined threshold value and that the presence of an adjacent vehicle and / or the crossing of a lane separation line is detected.
Par ailleurs, l'invention peut comporter l'une ou plusieurs des caractéristiques suivantes :Furthermore, the invention may include one or more of the following characteristics:
- les moyens d'acquisition de données sont aptes à déterminer la vitesse du véhicule, et en ce que les moyens de commande de la tension d'alimentation déterminent la valeur seuil de l'angle braquage des roues en fonction de la vitesse du véhicule,the data acquisition means are capable of determining the speed of the vehicle, and in that the supply voltage control means determine the threshold value of the steering angle of the wheels as a function of the speed of the vehicle,
- les moyens d'acquisition de données relatives aux conditions de fonctionnement du véhicule comportent des moyens de détection du type radar, pour détecter la présence éventuelle d'un autre véhicule adjacent,the means for acquiring data relating to the operating conditions of the vehicle comprise detection means of the radar type, for detecting the possible presence of another adjacent vehicle,
- les moyens d'acquisition de données relatives aux conditions de fonctionnement du véhicule comportent des moyens de réception d'informations représentatives de l'état d u trafic routier émis par des moyens d'émission du type satellite, pour détecter la présence éventuelle d'un autre véhicule adjacent,the means for acquiring data relating to the operating conditions of the vehicle include means for receiving information representative of the state of road traffic transmitted by satellite-type transmission means, to detect the possible presence of a other adjacent vehicle,
- les moyens d'acquisition de données relatives aux conditions de fonctionnement du véhicule comportent des moyens de détection de la position du véhicule par rapport aux lignes de marquage au sol de séparation des voies de circulation, tels que des moyens d'émission et de réception infrarouge, pour détecter le franchissement éventuel de ces dernières par le véhicule.
D'autres particularités et avantages apparaîtront à la lecture de la description ci-après, faite en référence aux figures dans lesquelles :the means for acquiring data relating to the conditions of operation of the vehicle include means for detecting the position of the vehicle with respect to the lines of marking on the ground separating the traffic lanes, such as transmission and reception means infrared, to detect the possible crossing of these by the vehicle. Other particularities and advantages will appear on reading the description below, made with reference to the figures in which:
- la figure 1 représente une vue de dessus d'un véhicule automobile comportant des moyens lumineux d'indication d'un changement de direction,FIG. 1 represents a top view of a motor vehicle comprising light means for indicating a change of direction,
- la figure 2 représente de manière synoptique la structure et le fonctionnement d'un dispositif d'indication du changement de direction conforme à l'invention,FIG. 2 schematically represents the structure and the operation of a device for indicating the change of direction according to the invention,
- la figure 3 représente une courbe illustrant la variation selon l'invention d'un seuil de braquage des roues du véhicule en fonction de la vitesse du véhicule.- Figure 3 shows a curve illustrating the variation according to the invention of a turning threshold of the vehicle wheels as a function of the speed of the vehicle.
Le véhicule 1 illustré à la figure 1 comporte des moyens 2, 12 destinés à indiquer un changement de direction par la génération de signaux 9 lumineux. Classiquement, pour chaque côté du véhicule, les moyens 2, 12 d'indication de changement de direction peuvent être constitués, de lampes clignotantes. Ces lampes clignotantes 2, 12 peuvent être situées à l'avant, à l'arrière et éventuellement dans la partie centrale du véhicule 1 sous la forme de répétiteurs latéraux.The vehicle 1 illustrated in FIG. 1 comprises means 2, 12 intended to indicate a change of direction by the generation of light signals 9. Conventionally, for each side of the vehicle, the means 2, 12 for indicating a change of direction may consist of flashing lamps. These flashing lights 2, 12 can be located at the front, at the rear and possibly in the central part of the vehicle 1 in the form of side repeaters.
En se référant à présent à la figure 2, le dispositif d'indication de changement de direction selon l'invention comporte des moyens 5, 6, 7, 8, 10 d'acquisition de données relatives aux conditions de fonctionnement du véhicule. Ces moyens d'acquisition de données sont reliés à des moyens 4, 3 de commande de la tension d'alimentation des moyens 2, 12 de signalisation lumineux.Referring now to FIG. 2, the device for indicating a change of direction according to the invention comprises means 5, 6, 7, 8, 10 for acquiring data relating to the operating conditions of the vehicle. These data acquisition means are connected to means 4, 3 for controlling the supply voltage of the light signaling means 2, 12.
Plus précisément, l'architecture électronique du dispositif d'éclairage peut être une architecture multiplexée, par exemple du type VAN ou CAN.More specifically, the electronic architecture of the lighting device can be a multiplexed architecture, for example of the VAN or CAN type.
Les moyens 3, 4 de commande de l'allumage des lampes clignotantes 2, 12 comportent un calculateur 4 de commande, par exemple le Boîtier de Servitude Intelligent (BSI) du
véhicule. De préférence, les moyens 5, 6, 7, 8, 1 0 d'acquisition de données relatives aux conditions de fonctionnement du véhicule sont reliés au calculateur 4 de commande.The means 3, 4 for controlling the lighting of the flashing lamps 2, 12 comprise a control computer 4, for example the Intelligent Service Unit (BSI) of the vehicle. Preferably, the means 5, 6, 7, 8, 1 0 for acquiring data relating to the operating conditions of the vehicle are connected to the control computer 4.
Le calculateur 4 de commande est relié, via un bus 1 1 , à un actionneur 3 apte à délivrer ou non une tension d'alimentation aux moyens 2, 12 d'indication lumineux. L'actionneur 3 est relié, au moyen d'une première ligne 13, aux lampes 2 clignotantes situées d'un même côté du véhicule 1 . L'actionneur 3 est également relié, au moyen d'une seconde ligne 14, aux lampes clignotantes 12 situées de l'autre côté du véhicule.The control computer 4 is connected, via a bus 1 1, to an actuator 3 capable of supplying or not supplying a supply voltage to the means 2, 12 for light indication. The actuator 3 is connected, by means of a first line 13, to the flashing lamps 2 located on the same side of the vehicle 1. The actuator 3 is also connected, by means of a second line 14, to the flashing lamps 12 located on the other side of the vehicle.
Les moyens d'acquisition de données relatives aux conditions de fonctionnement du véhicule comportent des moyens de mesure de l'angle de braquage des roues, tels qu'un capteur 5 d'angle au volant. Les moyens d'acquisition de données comportent également des moyens 6 de détection de la présence ou non d'un autre véhicule adjacent situé en amont et/ou en arrière et/ou latéralement par rapport au véhicule 1 .The means for acquiring data relating to the operating conditions of the vehicle comprise means for measuring the steering angle of the wheels, such as a steering wheel angle sensor 5. The data acquisition means also comprise means 6 for detecting the presence or not of another adjacent vehicle located upstream and / or behind and / or laterally with respect to the vehicle 1.
Selon l'invention, lorsque la présence d'un véhicule adjacent est détectée et que, simultanément, l'angle de braquage des roues est supérieur à une valeur seuil E1 déterminée, le calculateur 4 commande l'actionneur 3 pour allumer automatiquement les indicateurs 2, 12 lumineux situés du côté du véhicule correspondant au braquage des roues.According to the invention, when the presence of an adjacent vehicle is detected and that, simultaneously, the steering angle of the wheels is greater than a determined threshold value E1, the computer 4 controls the actuator 3 to automatically turn on the indicators 2 , 12 lights located on the side of the vehicle corresponding to the steering of the wheels.
Les moyens 6 de détection de la présence d'un véhicule adjacent peuvent être constitués, par exemple, d'un système à radar tel que celui d'un dispositif anti-collision. Classiquement ces systèmes anti-collision sont disposés dans les parties avant et arrière du véhicule pour détecter la présence et la distance des véhicules, situés en amont et/ou en aval et éventuellement latéralement, en utilisant le phénomène de réflexion des ondes radar.
Bien sûr, les moyens de détection de la présence d'un véhicule adjacent peuvent être constitués de tout autre dispositif équivalent comme, par exemple, un système 7 de réception d'informations représentatives de l'état du trafic routier émis par des moyens d'émission tel qu'un satellite. C'est-à-dire que le calculateur 4 de commande peut être informé de la présence éventuelle d'un véhicule adjacent par des moyens d'information satellite tel qu'un "GPS".The means 6 for detecting the presence of an adjacent vehicle may consist, for example, of a radar system such as that of an anti-collision device. Conventionally, these anti-collision systems are arranged in the front and rear parts of the vehicle to detect the presence and the distance of the vehicles, located upstream and / or downstream and possibly laterally, by using the phenomenon of reflection of the radar waves. Of course, the means for detecting the presence of an adjacent vehicle may consist of any other equivalent device such as, for example, a system 7 for receiving information representative of the state of road traffic emitted by means of broadcast such as a satellite. That is to say that the control computer 4 can be informed of the possible presence of an adjacent vehicle by means of satellite information such as a "GPS".
L'angle seuil E1 de braquage des roues nécessaire pour provoquer l'allumage automatique des moyens 2, 12 de signalisation lumineux est compris, par exemple, entre 10 et 40 degrés et de préférence égal à 30 degrés environ.The threshold angle E1 of the wheel turning necessary to cause the automatic lighting means 2, 12 of light signaling is, for example, between 10 and 40 degrees and preferably equal to about 30 degrees.
Avantageusement, les moyens d'acquisition de données comportent des moyens 10 de détermination de la vitesse V du véhicule, tel qu'un capteur de vitesse.Advantageously, the data acquisition means comprise means 10 for determining the speed V of the vehicle, such as a speed sensor.
Selon, l'invention, l'angle seuil E1 de braquage des roues nécessaire à l'allumage automatique des moyens 2, 12 d'indication de direction peut varier en fonction de la vitesse V du véhicule.According to the invention, the threshold angle E1 of the steering wheel necessary for the automatic ignition of the direction indication means 2, 12 can vary as a function of the speed V of the vehicle.
La figure 3 illustre un exemple de variation de l'angle seuilFigure 3 illustrates an example of variation of the threshold angle
E1 de braquage des roues en fonction de la vitesse V du véhicule. En particulier, lorsque la vitesse V du véhicule est inférieure ou égale à une première vitesse V1 déterminée, comprise, par exemple, entre 10 et 40 km/h environ, la valeur seuil E1 de l'angle de braquage des roues est sensiblement égale à une première valeur constante déterminée α2. De préférence, la première vitesse V1 est sensiblement égale à 20 km/h. La première valeur constante α2 est quant à elle comprise entre 20 et 40 degrés et de préférence de l'ordre de 30 degrés.E1 for turning the wheels as a function of the speed V of the vehicle. In particular, when the speed V of the vehicle is less than or equal to a first determined speed V1, comprised, for example, between approximately 10 and 40 km / h, the threshold value E1 of the steering angle of the wheels is substantially equal to a first determined constant value α2. Preferably, the first speed V1 is substantially equal to 20 km / h. The first constant value α2 is between 20 and 40 degrees and preferably of the order of 30 degrees.
Par ailleurs, lorsque la vitesse V du véhicule est comprise entre la première vitesse V1 et une seconde vitesse V2 déterminée supérieure à la première vitesse V1 , la valeur seuil E1 de l'angle de braquage des roues décroît lorsque la vitesse
V du véhicule croît. La seconde vitesse V2 est comprise, par exemple, entre 40 et 60km/h environ et est de préférence égale à 50km/h. De préférence également, l'angle de braquage seuil E1 est inversement proportionnel à la vitesse V du véhicule entre les première V1 et secondes vitesses V2.Furthermore, when the speed V of the vehicle is between the first speed V1 and a second determined speed V2 greater than the first speed V1, the threshold value E1 of the steering angle of the wheels decreases when the speed V of the vehicle increases. The second speed V2 is for example between 40 and 60km / h approximately and is preferably equal to 50km / h. Preferably also, the threshold turning angle E1 is inversely proportional to the speed V of the vehicle between the first V1 and second speeds V2.
Lorsque la vitesse V du véhicule est comprise entre la seconde vitesse V2 et une troisième vitesse V3 déterminée supérieure à la seconde vitesse, la valeur seuil E1 de l'angle de braquage des roues est sensiblement égale à une seconde valeur constante déterminée α1 . La seconde constante α1 est comprise, par exemple, entre 5 et 20 degrés et égale de préférence à 10 degrés.When the speed V of the vehicle is between the second speed V2 and a third determined speed V3 greater than the second speed, the threshold value E1 of the steering angle of the wheels is substantially equal to a second constant value determined α1. The second constant α1 is, for example, between 5 and 20 degrees and preferably equal to 10 degrees.
Enfin, lorsque la vitesse V du véhicule est supérieure à la troisième vitesse V3, la valeur seuil E1 de l'angle de braquage des roues peut croître lorsque la vitesse du véhicule croît. De préférence, au-delà de la troisième vitesse V3, l'angle de braquage seuil E1 croît linéairement avec la vitesse du véhicule.Finally, when the speed V of the vehicle is greater than the third speed V3, the threshold value E1 of the steering angle of the wheels can increase when the speed of the vehicle increases. Preferably, beyond the third speed V3, the threshold turning angle E1 increases linearly with the speed of the vehicle.
Le dispositif selon l'invention permet ainsi de signaler efficacement les changements de direction d'un véhicule, tout en s'adaptant aux conditions d'utilisation du véhicule.The device according to the invention thus makes it possible to effectively signal changes of direction of a vehicle, while adapting to the conditions of use of the vehicle.
Bien entendu, l'invention n'est pas limitée au mode de réalisation préféré décrit ci-dessus.Of course, the invention is not limited to the preferred embodiment described above.
Ainsi, en remplacement des moyens 7, 8 de détection d'un véhicule adjacent, ou en combinaisons avec ceux-ci, le dispositif selon l'invention peut comporter des moyens 8 de détection de la position du véhicule 1 par rapport aux lignes de marquage au sol de séparation des voies de circulation. Ces moyens 8 de détection sont en particulier aptes à détecter le franchissement éventuel de ces lignes par le véhicule.Thus, in replacement of the means 7, 8 for detecting an adjacent vehicle, or in combinations with these, the device according to the invention may include means 8 for detecting the position of the vehicle 1 relative to the marking lines on the ground separating the traffic lanes. These detection means 8 are in particular capable of detecting the possible crossing of these lines by the vehicle.
Classiquement, ces moyens 8 de détections peuvent être constitués d'un système d'émission d'ondes infrarouge et de réception des ondes réfléchies par le sol, tel que celui décrit dans le document EP 860001 .
De cette façon, lorsque le franchissement même partiel d'une ligne de marquage au sol est détectée, ou lorsque le véhicule s'en approche trop et que l'angle de braquage des roues est supérieur au seuil E1 , le calculateur 4 commande l'allumage automatique des moyens de signalisation 2, 12 correspondants. En variante, les moyens 8 de détection infrarouge peuvent également assurer la détection de la présence d'un véhicule adjacent.Conventionally, these detection means 8 can consist of a system for emitting infrared waves and for receiving waves reflected by the ground, such as that described in document EP 860001. In this way, when the crossing, even partial, of a marking line on the ground is detected, or when the vehicle comes too close to it and the steering angle of the wheels is greater than the threshold E1, the computer 4 controls the automatic switching on of the corresponding signaling means 2, 12. As a variant, the infrared detection means 8 can also ensure the detection of the presence of an adjacent vehicle.
On conçoit donc aisément que l'invention permet d'améliorer significativement la sécurité sur les axes routiers.It is therefore easy to see that the invention makes it possible to significantly improve safety on highways.
Enfin, bien que l'invention ait été décrite en liaison avec des modes de réalisation particuliers, elle comprend tous les équivalents techniques des moyens décrits.
Finally, although the invention has been described in connection with particular embodiments, it includes all the technical equivalents of the means described.
Claims
1 . Procédé d'indication du changement de direction d'un véhicule automobile, consistant à détecter l'angle de braquage des roues du véhicule (1 ) en vue d'allumer automatiquement des moyens (2, 12) lumineux d'indication de changement de direction, caractérisé en ce qu'il comporte une étape de détection de la présence d'un autre véhicule adjacent et/ou le franchissement d'une ligne de marquage au sol séparant des voies de circulation, et en ce que, lorsque l'angle de braquage des roues est supérieur à une valeur seuil (E1 ) déterminée et que la présence d'un véhicule adjacent et/ou le franchissement d'une ligne de séparation des voies de circulation est détecté, les moyens (2, 12) lumineux d'indication de changement de direction correspondants sont allumés automatiquement.1. Method for indicating the change of direction of a motor vehicle, comprising detecting the steering angle of the wheels of the vehicle (1) with a view to automatically switching on means (2, 12) for indicating the change of direction , characterized in that it comprises a step of detecting the presence of another adjacent vehicle and / or crossing a line of marking on the ground separating traffic lanes, and in that, when the angle of wheel deflection is greater than a determined threshold value (E1) and that the presence of an adjacent vehicle and / or the crossing of a line dividing the traffic lanes is detected, the means (2, 12) of corresponding direction change indication are lit automatically.
2. Procédé selon la revendication 1 , caractérisé en ce qu'il comporte une étape de mesure de la vitesse du véhicule et une étape de détermination de la valeur seuil (E1 ) de l'angle de braquage en fonction de la vitesse (V) du véhicule.2. Method according to claim 1, characterized in that it comprises a step of measuring the vehicle speed and a step of determining the threshold value (E1) of the steering angle as a function of the speed (V) of the vehicle.
3. Procédé selon la revendication 1 ou 2, caractérisé en ce que, lorsque la vitesse (V) du véhicule est inférieure ou égale à une première vitesse (V1 ) déterminée, la valeur seuil (E1 ) de l'angle de braquage des roues est sensiblement égale à une première valeur constante déterminée (α2).3. Method according to claim 1 or 2, characterized in that, when the speed (V) of the vehicle is less than or equal to a first speed (V1) determined, the threshold value (E1) of the steering angle of the wheels is substantially equal to a first determined constant value (α2).
4. Procédé selon la revendication 3, caractérisé en ce que, lorsque la vitesse du véhicule est comprise entre la première vitesse (V1 ) et une seconde vitesse (V2) déterminée supérieure à la première vitesse, la valeur seuil (E1 ) de l'angle de braquage des roues décroît lorsque la vitesse (V) du véhicule croît.4. Method according to claim 3, characterized in that, when the vehicle speed is between the first speed (V1) and a second speed (V2) determined greater than the first speed, the threshold value (E1) of the steering angle of the wheels decreases when the speed (V) of the vehicle increases.
5. Procédé selon la revendication 4, caractérisé en ce que, lorsque la vitesse (V) du véhicule est comprise entre la seconde vitesse (V2) et une troisième vitesse (V3) déterminée supérieure à la seconde vitesse, la valeur seuil (E1 ) de l'angle de braquage des roues est sensiblement égale à une seconde valeur constante déterminée (α1 ).5. Method according to claim 4, characterized in that, when the speed (V) of the vehicle is between the second speed (V2) and a third speed (V3) determined greater than the second speed, the threshold value (E1) of the angle wheel deflection is substantially equal to a second determined constant value (α1).
6. Dispositif d'indication du changement de direction d'un véhicule automobile de mise en œuvre du procédé conforme à l'une quelconque revendications précédentes, comportant des moyens (2, 12) de signalisation lumineux, des moyens (5, 6,7, 8, 10) d'acquisition de données relatives aux conditions de fonctionnement du véhicule aptes à déterminer le braquage des roues du véhicule, des moyens (3, 4) de commande de la tension d'alimentation des moyens (2, 12) de signalisation lumineux, caractérisé en ce que les moyens (5, 6, 7, 8, 10) d'acquisition de données sont aptes à détecter la présence ou non d'un autre véhicule adjacent et/ou le franchissement d'une ligne de marquage au sol séparant des voies de circulation, pour assurer l'allumage automatique des moyens (2, 12) de signalisation lumineux lorsque l'angle de braquage des roues est supérieur à une valeur seuil (E1 ) déterminée et que la présence d'un véhicule adjacent et/ou le franchissement d'une ligne de séparation de voies de circulation est détecté.6. Device for indicating the change of direction of a motor vehicle implementing the method according to any one of the preceding claims, comprising means (2, 12) for light signaling, means (5, 6,7 , 8, 10) of acquisition of data relating to the operating conditions of the vehicle capable of determining the turning of the wheels of the vehicle, of the means (3, 4) for controlling the supply voltage of the means (2, 12) of light signaling, characterized in that the data acquisition means (5, 6, 7, 8, 10) are capable of detecting the presence or not of another adjacent vehicle and / or the crossing of a marking line on the ground separating traffic lanes, to ensure the automatic lighting of the light signaling means (2, 12) when the steering angle of the wheels is greater than a determined threshold value (E1) and the presence of a vehicle adjacent and / or crossing a se traffic lane clearance is detected.
7. Dispositif selon la revendication 6, caractérisé en ce que les moyens (5, 6, 7, 8, 10) d'acquisition de données sont aptes à déterminer la vitesse (V) du véhicule, et en ce que les moyens (3, 4) de commande de la tension d'alimentation déterminent la valeur seuil (E1 ) de l'angle braquage des roues en fonction de la vitesse (V) du véhicule.7. Device according to claim 6, characterized in that the means (5, 6, 7, 8, 10) for data acquisition are capable of determining the speed (V) of the vehicle, and in that the means (3 , 4) for controlling the supply voltage determine the threshold value (E1) of the steering angle of the wheels as a function of the speed (V) of the vehicle.
8. Dispositif selon la revendication 6 ou 7, caractérisé en ce que les moyens d'acquisition de données relatives aux conditions de fonctionnement du véhicule comportent des moyens (6) de détection du type radar, pour détecter la présence éventuelle d'un autre véhicule adjacent.8. Device according to claim 6 or 7, characterized in that the means for acquiring data relating to the operating conditions of the vehicle comprise means (6) of radar type detection, for detecting the possible presence of another vehicle adjacent.
9. Dispositif selon l'une quelconque des revendications 6 à 8, caractérisé en ce que les moyens d'acquisition de données relatives aux conditions de fonctionnement du véhicule comportent des moyens (7) de réception d'informations représentatives de l'état du trafic routier émis par des moyens d'émission du type satellite, pour détecter la présence éventuelle d'un autre véhicule adjacent.9. Device according to any one of claims 6 to 8, characterized in that the means for acquiring data relating to the operating conditions of the vehicle comprise means (7) for receiving information representative of the state of the traffic road issued by means satellite type transmission, to detect the possible presence of another adjacent vehicle.
10. Dispositif selon l'une quelconque des revendications 6 à 9, caractérisé en ce que les moyens d'acquisition de données relatives aux conditions de fonctionnement du véhicule comportent des moyens (8) de détection de la position du véhicule par rapport aux lignes de marquage au sol de séparation des voies de circulation, tels que des moyens d'émission et de réception infrarouge, pour détecter le franchissement éventuel de ces dernières par le véhicule. 10. Device according to any one of claims 6 to 9, characterized in that the means for acquiring data relating to the operating conditions of the vehicle comprise means (8) for detecting the position of the vehicle relative to the lines of marking on the ground of separation of traffic lanes, such as infrared transmission and reception means, to detect the possible crossing of these by the vehicle.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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FR0013283A FR2815311B1 (en) | 2000-10-17 | 2000-10-17 | METHOD FOR INDICATING THE CHANGE OF DIRECTION OF A MOTOR VEHICLE AND DEVICE FOR IMPLEMENTING THE METHOD |
FR0013283 | 2000-10-17 | ||
PCT/FR2001/003176 WO2002032719A1 (en) | 2000-10-17 | 2001-10-12 | Method for indicating a motor vehicle change of direction and device therefor |
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EP1237750A1 true EP1237750A1 (en) | 2002-09-11 |
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EP (1) | EP1237750A1 (en) |
JP (2) | JP2004511389A (en) |
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JP2004511389A (en) | 2004-04-15 |
JP2008100677A (en) | 2008-05-01 |
US20030004643A1 (en) | 2003-01-02 |
US6768933B2 (en) | 2004-07-27 |
FR2815311A1 (en) | 2002-04-19 |
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