WO2020070402A1 - Vehicle provided with a light projection system in the passenger compartment of the vehicle - Google Patents

Vehicle provided with a light projection system in the passenger compartment of the vehicle

Info

Publication number
WO2020070402A1
WO2020070402A1 PCT/FR2019/052167 FR2019052167W WO2020070402A1 WO 2020070402 A1 WO2020070402 A1 WO 2020070402A1 FR 2019052167 W FR2019052167 W FR 2019052167W WO 2020070402 A1 WO2020070402 A1 WO 2020070402A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
projection
passenger compartment
light
movements
Prior art date
Application number
PCT/FR2019/052167
Other languages
French (fr)
Inventor
Clement Bougard
Aurore BOURRELLY
Whilk Marcelino GONCALVES
Stephanie Schneider
Christophe Bourdin
Lionel BRINGOUX
Jean Louis Vercher
Original Assignee
Psa Automobiles Sa
Cnrs - Centre National De La Recherche
Universite D'aix-Marseille
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 Psa Automobiles Sa, Cnrs - Centre National De La Recherche, Universite D'aix-Marseille filed Critical Psa Automobiles Sa
Publication of WO2020070402A1 publication Critical patent/WO2020070402A1/en

Links

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
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
    • 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
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/50—Mounting arrangements
    • B60Q3/51—Mounting arrangements for mounting lighting devices onto vehicle interior, e.g. onto ceiling or floor
    • 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
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/70—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose
    • 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
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/80—Circuits; Control arrangements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
    • A61M2021/0005—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus
    • A61M2021/0044—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus by the sight sense
    • A61M2021/005—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus by the sight sense images, e.g. video
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/332—Force measuring means
    • 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
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
    • B60W2050/146—Display means
    • 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
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/14—Yaw
    • 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
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/16—Pitch
    • 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
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/18—Roll

Definitions

  • the invention generally relates to vehicles carrying a light projection system in the passenger compartment of said vehicle and relates in particular to a vehicle carrying a light projection system for effectively combating motion sickness.
  • the peripheral visual system is very sensitive to the detection of the visual movement of the body.
  • the scrolling of a visual flow on the retina naturally returns very fine information of the physical movement (head and body) of its observer compared to its space of evolution (its environment).
  • the lack of proper locomotor movement (as in a vehicle, especially a motor vehicle), can lead to disorientation which can be accompanied by dizziness and nausea, all of which are grouped under the name "motion sickness”.
  • a screen or video projection zone allowing the broadcasting of the image of the road in real time (for example, arranged at the rear of a front seat backrest or headrest for passengers rear), a device for visual reproduction of the movement (restitution of the dynamics and / or direction of the movement via light-emitting diodes arranged at the rear of a front seat backrest or headrest for rear passengers) , and ramps of light-emitting diodes (or diode arrays) integrated into the vehicle cabin.
  • Document WO2017176920A describes a system for grouping light sources configured to deliver visual stimuli presented in a user's field of vision.
  • control device delivering a control signal to the grouping system of light sources so as to imitate the visual input that would be received if the occupant of the vehicle were looking outside the vehicle.
  • It implements glasses carrying a matrix of light-emitting diodes on the branches.
  • the movement or flashing of the diodes can act as a distractor and harm the safety and / or well-being of users.
  • the object of the invention is therefore in particular to improve the situation by using a projection of a light pattern which does not affect the direct field of vision of the occupants of the vehicle and which on the other hand overcomes reflections on the surfaces.
  • vehicle windows windshield, side windows, mirror
  • the present invention uses simple sensory principles that are not invasive for the occupants. It therefore does not require the provision of additional equipment (such as glasses or a video screen) and allows everyone to be free to exercise any type of current activity in the passenger compartment (read, watch a movie, play ).
  • the driver can also benefit if the vehicle is operated in autonomous mode
  • the present invention is based on a visual reinforcement of the gravity reference frame (landmark) by which the relative movement of a visual stimulus in the passenger compartment allows the occupants of the vehicle to better understand the movements of the vehicle and thus reduce or prevent symptoms of travel sickness.
  • the relative movement of the visual stimulus in the passenger compartment is interpreted by an occupant of the vehicle as a movement of their own body in space. He will then be able to provide, completely naturally and unconsciously, the postural adjustments adapted to the real movements of the vehicle and therefore not to be subjected to the inertial constraints of the latter. Understanding the physical movement of the car as closely as possible is a key solution in combating the emergence of motion sickness.
  • the present invention aims to consider the problem of motion sickness at its source.
  • a vehicle comprising a passenger compartment capable of receiving occupants and in which a light projection system is installed, said system comprising a projection device capable of projecting at least one light pattern inside the passenger compartment, coupled to a gyroscopic device, a device for monitoring the movements of the vehicle and a piloting device capable of controlling the projection device and the gyroscopic device as a function of the movements of the vehicle; said projection device projecting the light pattern on at least one non-surface reflective of the passenger compartment, in at least one direction determined by the steering device, and outside the eye area of the occupants present in the passenger compartment of the vehicle.
  • the light pattern forms a cloud of light points.
  • the direction of projection of the light pattern is opposite to that of the movement of the vehicle.
  • the projection device is mechanically coupled to the gyroscopic device via a multi-axis stabilization device making it possible to compensate for the physical movements of the vehicle as a function of the information delivered by the piloting device.
  • the piloting device controls the direction of the projection so as to compensate in real time or in advance for the physical movements of the vehicle.
  • the projection device comprises a light source with one or more LEDs or a laser source.
  • the projection device comprises a light source and a mask disposed in front of the light source; the mask comprising a plurality of holes.
  • the projection device movable in rotation, comprises a light source and at least one reflecting device, disposed opposite the light source capable of reflecting light in the manner of a mirror ball.
  • the projection device comprises a video projector capable of projecting one or more still or moving images.
  • the vehicle includes a device for detecting the reflective surfaces of the passenger compartment as well as the occupants' eye area so as to define shadow areas in the projection area corresponding to the reflective surfaces and the eye area .
  • the vehicle is of the automobile type.
  • the invention is not limited to this type of vehicle. It concerns in fact any type of vehicle comprising a passenger compartment intended to receive occupants transported by the vehicle. Consequently, it relates just as well to land vehicles, as river (or maritime) vehicles, and air or space vehicles.
  • the projection system includes a projection device coupled to a gyroscopic device.
  • the projection device comprises a light source to produce a light pattern intended to line all or part of the interior surfaces of the passenger compartment, this so as to occupy a large three-dimensional visual space allowing optimal perception of movement via peripheral vision ( mirror ball atmosphere).
  • the gyroscopic device is designed to support the weight of the projection device and maintain its stable orientation in a gravity space (vertical axis of the projection device always aligned with the vertical gravity, its horizontal axis always perpendicular to gravity).
  • the projection system thus formed makes it possible to keep the projected light pattern stable in a terrestrial frame of reference, independently of the movement of the vehicle. During the movement of the vehicle, the projected light pattern becomes stable with respect to the external environment but mobile in the vehicle repository and informs the occupants of the movement dynamics of the vehicle.
  • the two devices are physically coupled together (mounting one on the other).
  • the light projection device is physically coupled to the gyroscopic device via a mechanical stabilization device.
  • the two devices are physically separate (two independent devices: separate projection device and gyroscopic device), but the vehicle movement information from the gyroscopic device is electronically fed back into the control device of the projection to allow it to be stabilized in a gravity frame of reference.
  • the vehicle movement data in the gravity reference frame are directly extracted from the gyroscopic device or devices already existing in the vehicle and reinjected via a movement algorithm into the projection device.
  • a three-axis gyroscopic stabilizer also tracks yaw movements (rotation around the vertical axis of the vehicle) in addition to the vehicle's movements in roll and pitch (see two-axis stabilizer).
  • the movements of the light pattern projected inside the passenger compartment take into account the rotational movements of the vehicle around the three X (longitudinal), Y (lateral) and Z (vertical) axes which define a three-dimensional frame of reference usually used to represent a vehicle in space.
  • the origin of the repository is generally located near the center of gravity of the vehicle.
  • the three types of movement (rotations) around the X, Y and Z axes are designated respectively by roll, pitch and yaw.
  • Yaw In the case of a right turn (yaw clockwise when looking at the vehicle from above), the light pattern projected on the walls deviates to the left of the passenger compartment around a vertical axis proportional to the dynamics of the vehicle ; and vice versa during a left turn.
  • the movement of the light pattern is considered to be "dependent acceleration". This means that at constant speed, there is no movement of the light pattern. The movement is thus mainly limited to variations in acceleration.
  • the movement of the light pattern could be at “dependent speed”, making it possible to restore speed dynamics also through permanent scrolling of the bright pattern.
  • speed dynamics which may be nauseating
  • the idea supported here is to allow the occupants to visually perceive the movements of the vehicle in a terrestrial reference and to consequently produce in real time the postural adjustments adapted to the movements of the vehicle.
  • the first type of control is mechanical: it eliminates any source of energy for its operation. Piloting consists in mechanically compensating for the physical movements of the vehicle and therefore does not require the use of external sources, like portable stabilizer systems used in cinema and television, allowing the taking of shots in fluid "traveling shots", thanks to a system generally comprising a harness, an articulated arm, an active, mechanical camera stabilization system.
  • the second type of control is electronic: stabilization control is carried out through the use of external electronic modules:
  • a first module capable of detecting the movement of the vehicle (or recovering them via gyroscopic devices already implemented in the vehicles)
  • a second module capable of restoring the compensation for the desired movement on the stabilization device.
  • the stabilization control device aims to allow the occupants to visually understand the dynamics of the car and consequently produce the postural adjustments adapted to these movements.
  • the electronic control device also allows two types of control:
  • This control is to be able to anticipate future movements of the vehicle (in a time window of a few seconds or hundreds of milliseconds (optimal window of 250-350 ms according to the literature) and to control with a short lead time , the projection of light patterns with a determined compensation algorithm, on the walls (non-glazed surfaces) of the passenger compartment.
  • the anticipated control allows the occupants to predict visually via the projection of the light patterns, the future movements of the vehicle and to consequently produce the postural adjustments (anticipated) adapted to these future movements.
  • FIGS 1 and 2 schematically illustrate an example of a vehicle according to the invention, here a motor vehicle VA, embedding a projection system SP in the cabin H of a motor vehicle VA.
  • the projection system SP comprises a light projection device DP articulated mounted on a gyroscopic device DG via a multi-axis stabilization device SM (or gyroscopic stabilizer) (2 or 3 axes) making it possible to project a light pattern ML onto the whole or part of the passenger compartment surfaces of a moving VA vehicle.
  • the projected light pattern ML for example represents a cloud of light points which are arranged so as to produce a three-dimensional visual impression.
  • the gyroscopic device DG and the projection device DP are installed under the roof of the vehicle VA and preferably in the rear part of the roof of the vehicle to be able to project the light pattern ML optimally on the exterior surfaces of the side walls of the passenger compartment H, the rest of the PV roof, the rear of the seats (backrest, headrest), the dashboard of the VA vehicle.
  • the projection system SP further comprises a device DS for monitoring the movements of the vehicle VA and a piloting device DC capable of controlling the projection device DP and the gyroscopic device DG as a function of the movements of the vehicle VA.
  • the projection device DP is capable of projecting the light pattern ML onto the non-reflecting surfaces of the passenger compartment H, in directions determined by the control device DC, and outside the eye area of the occupants present in the passenger compartment H of the vehicle VA.
  • FIG. 3 illustrates an example of spatial coverage of the light pattern ML in the passenger compartment of a motor vehicle.
  • This spatial coverage excludes the projection zones on the windows to avoid any untimely reflection of the light sources (windshield, windows and rear view mirror) as well as the eye area, so as not to dazzle or disturb the occupants.
  • the reflective surfaces as well as the eye area are, for example, previously identified so as to define “shadow areas” in the projection area, whether by prior adjustments to the system, to covers mechanical.
  • the system can also use an automatic identification and processing device for sensitive areas comprising a scanner which scans these sensitive areas to make them specifically unaffected by light output.
  • the light projection device mobile in rotation, comprises a light source illuminating a sphere, surmounted by small mirrors in the manner of a faceted ball.
  • the reflection of light on the mirrors for example, generates the 3D point cloud, intended to line the interior of the passenger compartment of the vehicle (mirror ball atmosphere).
  • the light source consists of one or more lasers producing a set of laser beams projected on a motorized pivoting mirror intended to reflect the light pattern inside the passenger compartment of the vehicle (at the like multi-laser projectors atmosphere, the graphic projection of which can be modulated and controlled as described in the document EP3004725A).
  • the light projection device comprises a light source which illuminates the interior of the passenger compartment from one or more LEDs making it possible to display a visual structure in the passenger compartment.
  • the light projection device mobile in rotation, comprises a light source which illuminates the interior of the passenger compartment from a mask or a filter, riddled with small holes.
  • a light source which illuminates the interior of the passenger compartment from a mask or a filter, riddled with small holes.
  • the passage of light through the small holes create a special light structure (for example, a point cloud) on the walls of the vehicle interior.
  • the light projection system comprises a video projector which makes it possible to diffuse any type of light patterns, fixed or animated, making it possible to provide a particular light structure on the walls of the passenger compartment (cloud of dots, grid, mesh, polarized light pattern, landscape).
  • the projection system can be easily integrated into the passenger compartment of an existing vehicle, without the need to integrate it from the design of the passenger compartment;
  • the projection zones can be adapted to concern only part of the passenger compartment) and can be activated on request;
  • This invention fits perfectly into the problems of motion sickness and particularly with regard to the new modes of car use prompted by the development of the autonomous vehicle (drivers will become affected by motion sickness: 90% of vehicle occupants will now be affected).
  • This invention can also be exported to other markets than that of the automobile because it can be implemented in all modes of transport with passenger compartment likely to cause motion sickness (car, bus, train, boat, plane ). By acting directly at its source, it constitutes to date a promising countermeasure to fight effectively against motion sickness.
  • This invention can also be used to provide light information relating to driving assistance by means of the display of warning and direction signals (warning lights / arrows, etc.), making it possible to redirect the '' attention of the driver towards the road depending on the state of the road but also on the detected state of the driver (drowsiness %)
  • this invention could allow the occupants to detach themselves from the driving task (context of autonomous driving) with a view to comfort and well-being with customizable atmospheres.

Abstract

A vehicle (VA) comprising a passenger compartment (H) able to accommodate occupants and in which a light projection system (SP) is installed, said system (SP) comprising a projection device (DP) able to project at least one light pattern (ML) inside the passenger compartment (H), coupled to a gyroscopic device (DG), a device (DS) for monitoring the movements of the vehicle (V) and a control device (DC) able to control the projection device (DP) and the gyroscopic device (DG) as a function of the movements of the vehicle (VA); said projection device (DP) projecting the light pattern (ML) onto at least one non-reflective surface of the passenger compartment (H), in at least one direction determined by the control device (DC), and outside the eye area of the occupants present in the passenger compartment (H) of the vehicle (VA).

Description

VEHICULE EMBARQUANT UN SYSTEME DE PROJECTION LUMINEUSE VEHICLE EMPLOYING A LIGHT PROJECTION SYSTEM
DANS L’HABITACLE DU VEHICULE IN THE VEHICLE INTERIOR
L’invention concerne en général les véhicules embarquant un système de projection lumineuse dans l’habitacle dudit véhicule et se rapporte en particulier à un véhicule embarquant un système de projection lumineuse permettant de lutter efficacement contre le mal des transports. The invention generally relates to vehicles carrying a light projection system in the passenger compartment of said vehicle and relates in particular to a vehicle carrying a light projection system for effectively combating motion sickness.
Le système visuel périphérique est très sensible à la détection du mouvement visuel du corps propre. Le défilement d’un flux visuel sur la rétine renvoie naturellement une information très fine du mouvement physique (tête et corps) de son observateur par rapport à son espace d’évolution (son environnement). L’absence de mouvement locomoteur propre (comme dans un véhicule, notamment un véhicule automobile), peut entraîner une désorientation pouvant s’accompagner de vertiges et de nausées, autant de désagréments qui sont regroupés sous l’appellation « mal des transports ».  The peripheral visual system is very sensitive to the detection of the visual movement of the body. The scrolling of a visual flow on the retina naturally returns very fine information of the physical movement (head and body) of its observer compared to its space of evolution (its environment). The lack of proper locomotor movement (as in a vehicle, especially a motor vehicle), can lead to disorientation which can be accompanied by dizziness and nausea, all of which are grouped under the name "motion sickness".
Il existe différents systèmes permettant de lutter contre le mal des transports basés sur une prédiction des futurs mouvements du véhicule qui sont restitués visuellement aux occupants du véhicule, dans un repère terrestre.  There are different systems for combating motion sickness based on a prediction of future movements of the vehicle which are visually restored to the occupants of the vehicle, in a landmark.
On connaît notamment du document DE102007037852A un système mettant en œuvre un dispositif de restitution visuelle dynamique du mouvement du véhicule, destiné à produire, en temps réel, une image, un effet visuel ou flux optique semblable à ceux observés par un utilisateur regardant à l’extérieur du véhicule.  Particularly known from document DE102007037852A is a system implementing a device for dynamic visual restitution of the movement of the vehicle, intended to produce, in real time, an image, a visual effect or optical flux similar to those observed by a user looking at the exterior of the vehicle.
II met en œuvre un écran ou zone de vidéo-projection permettant la diffusion de l’image de la route en temps réel (par exemple, disposé à l’arrière d’un dossier de siège avant ou d’appuie-tête pour les passagers arrière), un dispositif de reproduction visuel du mouvement (restitution de la dynamique et/ou de la direction du mouvement via des diodes lumineuses disposées à l’arrière d’un dossier de siège avant ou d’appuie-tête pour les passagers arrière), et des rampes de diodes lumineuses (ou matrices de diodes) intégrées dans l’habitacle du véhicule. Le document WO2017176920A décrit un système de groupement de sources de lumière configurées pour délivrer en sortie des stimuli visuels présentés dans un champ de vision de l’utilisateur. It implements a screen or video projection zone allowing the broadcasting of the image of the road in real time (for example, arranged at the rear of a front seat backrest or headrest for passengers rear), a device for visual reproduction of the movement (restitution of the dynamics and / or direction of the movement via light-emitting diodes arranged at the rear of a front seat backrest or headrest for rear passengers) , and ramps of light-emitting diodes (or diode arrays) integrated into the vehicle cabin. Document WO2017176920A describes a system for grouping light sources configured to deliver visual stimuli presented in a user's field of vision.
Il décrit en outre un dispositif de commande délivrant un signal de commande au système de groupement de sources de lumière de manière à imiter l’entrée visuelle que l’on recevrait si l’occupant du véhicule regardait à l’extérieur du véhicule.  It further describes a control device delivering a control signal to the grouping system of light sources so as to imitate the visual input that would be received if the occupant of the vehicle were looking outside the vehicle.
Il met en œuvre des lunettes portant une matrice de diodes lumineuses sur les branches.  It implements glasses carrying a matrix of light-emitting diodes on the branches.
Ces systèmes permettent de restituer à l’occupant une vision de la route sur un écran (via une caméra vidéo scrutant la scène routière devant le véhicule), et/ ou à ses caractéristiques spatiales et dynamiques (via la présentation d’un effet visuel ou d’un flux optique codant par exemple la direction du mouvement, les variations de vitesse, d’accélération de manière à réduire ainsi ou prévenir les symptômes du mal des transports. Néanmoins, l’efficacité de ce procédé est limitée par :  These systems provide the occupant with a vision of the road on a screen (via a video camera scanning the road scene in front of the vehicle), and / or its spatial and dynamic characteristics (via the presentation of a visual effect or of an optical flux coding for example the direction of movement, variations in speed, acceleration so as to thereby reduce or prevent the symptoms of motion sickness. Nevertheless, the effectiveness of this process is limited by:
- la taille réduite du champ visuel de projection (écrans LCD) qui d’une part exclut la vision périphérique, et d’autre part nécessite une focalisation attentionnelle sur l’écran et exclut de ce fait l’exécution d’autres tâches visuelles en parallèle.  - the reduced size of the projection visual field (LCD screens) which on the one hand excludes peripheral vision, and on the other hand requires attentional focusing on the screen and therefore excludes the execution of other visual tasks in parallel.
- le caractère potentiellement perturbateur de l’affichage d’un flux visuel dynamique. Le mouvement ou flash des diodes peuvent agir comme un distracteur et nuire à la sécurité et/ou au bienêtre des utilisateurs.  - the potentially disruptive nature of the display of a dynamic visual flow. The movement or flashing of the diodes can act as a distractor and harm the safety and / or well-being of users.
- le caractère potentiellement invasif pour la rétine des systèmes comportant des assemblages de diodes lumineuses ;  - the potentially invasive character for the retina of systems comprising assemblies of light diodes;
- l’obligation de porter des lunettes dans le cas du dispositif embarqué sur l’occupant.  - the obligation to wear glasses in the case of the device on board the occupant.
L’invention a donc notamment pour but d’améliorer la situation en utilisant une projection d’un motif lumineux qui n’affecte pas le champ de vision direct des occupants du véhicule et qui s’affranchit d’autre part des réflexions sur les surfaces vitrées du véhicule (pare-brise, vitres latérales, miroir de rétroviseur...). The object of the invention is therefore in particular to improve the situation by using a projection of a light pattern which does not affect the direct field of vision of the occupants of the vehicle and which on the other hand overcomes reflections on the surfaces. vehicle windows (windshield, side windows, mirror...).
Contrairement aux solutions existantes, la présente invention fait appel à des principes sensoriels simples et non invasifs pour les occupants. Il ne nécessite donc pas la mise à disposition d’équipement supplémentaire (comme des lunettes ou un écran vidéo) et permet de laisser tout un chacun libre d’exercer n’importe quel type d’activité courante dans l’habitacle (lire, regarder un film, jouer...). Unlike existing solutions, the present invention uses simple sensory principles that are not invasive for the occupants. It therefore does not require the provision of additional equipment (such as glasses or a video screen) and allows everyone to be free to exercise any type of current activity in the passenger compartment (read, watch a movie, play ...).
Le conducteur peut en bénéficier également dans le cas où la conduite du véhicule est opérée par le mode autonome The driver can also benefit if the vehicle is operated in autonomous mode
La présente invention se base sur un renforcement visuel du référentiel gravitaire (repère terrestre) par lequel le déplacement relatif d’un stimulus visuel dans l’habitacle permet aux occupants du véhicule de mieux appréhender les mouvements du véhicule et réduire ainsi ou prévenir les symptômes du mal des transports.  The present invention is based on a visual reinforcement of the gravity reference frame (landmark) by which the relative movement of a visual stimulus in the passenger compartment allows the occupants of the vehicle to better understand the movements of the vehicle and thus reduce or prevent symptoms of travel sickness.
Le déplacement relatif du stimulus visuel dans l’habitacle est interprété par un occupant du véhicule comme un mouvement de son propre corps dans l’espace. Il pourra alors fournir, de manière complètement naturelle et inconsciente, les ajustements posturaux adaptés aux mouvements réels du véhicule et donc ne pas subir les contraintes inertielles de ce dernier. La perception au plus juste du mouvement physique de la voiture est une solution clé pour lutter contre l’émergence du mal des transports.  The relative movement of the visual stimulus in the passenger compartment is interpreted by an occupant of the vehicle as a movement of their own body in space. He will then be able to provide, completely naturally and unconsciously, the postural adjustments adapted to the real movements of the vehicle and therefore not to be subjected to the inertial constraints of the latter. Understanding the physical movement of the car as closely as possible is a key solution in combating the emergence of motion sickness.
La présente invention vise à considérer le problème du mal des transports à sa source.  The present invention aims to consider the problem of motion sickness at its source.
Elle propose notamment à cet effet un véhicule, comportant un habitacle apte à recevoir des occupants et dans lequel est implanté un système de projection lumineuse, ledit système comportant un dispositif de projection apte à projeter au moins un motif lumineux à l’intérieur de l’habitacle, couplé à un dispositif gyroscopique, un dispositif de suivi des mouvements du véhicule et un dispositif de pilotage apte à commander le dispositif de projection et le dispositif gyroscopique en fonction des mouvements du véhicule ; ledit dispositif de projection projetant le motif lumineux sur au moins une surface non réfléchissante de l’habitacle, dans au moins une direction déterminée par le dispositif de pilotage, et en dehors de la zone des yeux des occupants présents dans l’habitacle du véhicule. To this end, it notably proposes a vehicle, comprising a passenger compartment capable of receiving occupants and in which a light projection system is installed, said system comprising a projection device capable of projecting at least one light pattern inside the passenger compartment, coupled to a gyroscopic device, a device for monitoring the movements of the vehicle and a piloting device capable of controlling the projection device and the gyroscopic device as a function of the movements of the vehicle; said projection device projecting the light pattern on at least one non-surface reflective of the passenger compartment, in at least one direction determined by the steering device, and outside the eye area of the occupants present in the passenger compartment of the vehicle.
Selon une caractéristique, le motif lumineux forme un nuage de points lumineux.  According to one characteristic, the light pattern forms a cloud of light points.
Selon une autre caractéristique, la direction de projection du motif lumineux est opposée à celle du mouvement du véhicule.  According to another characteristic, the direction of projection of the light pattern is opposite to that of the movement of the vehicle.
Selon autre caractéristique, le dispositif de projection est couplé mécaniquement au dispositif gyroscopique via un dispositif de stabilisation multiaxe permettant de compenser les mouvements physiques du véhicule en fonction des informations délivrées par le dispositif de pilotage.  According to another characteristic, the projection device is mechanically coupled to the gyroscopic device via a multi-axis stabilization device making it possible to compensate for the physical movements of the vehicle as a function of the information delivered by the piloting device.
Selon une autre caractéristique, le dispositif de pilotage pilote la direction de la projection de manière à compenser en temps réel ou de manière anticipée les mouvements physiques du véhicule.  According to another characteristic, the piloting device controls the direction of the projection so as to compensate in real time or in advance for the physical movements of the vehicle.
Selon une autre caractéristique, le dispositif de projection comporte une source lumineuse à une ou plusieurs LEDs ou une source laser.  According to another characteristic, the projection device comprises a light source with one or more LEDs or a laser source.
Selon une autre caractéristique, le dispositif de projection comporte une source lumineuse et un masque disposé devant la source lumineuse ; le masque comportant une pluralité de trous.  According to another characteristic, the projection device comprises a light source and a mask disposed in front of the light source; the mask comprising a plurality of holes.
Selon une autre caractéristique, le dispositif de projection, mobile en rotation, comporte une source lumineuse et au moins un dispositif réfléchissant, disposé en regard de la source lumineuse apte à réfléchir la lumière à la manière d’une boule à facettes.  According to another characteristic, the projection device, movable in rotation, comprises a light source and at least one reflecting device, disposed opposite the light source capable of reflecting light in the manner of a mirror ball.
Selon une autre caractéristique, le dispositif de projection comporte un vidéoprojecteur apte à projeter une ou plusieurs images fixes ou animées.  According to another characteristic, the projection device comprises a video projector capable of projecting one or more still or moving images.
Selon une autre caractéristique, le véhicule comporte un dispositif de détection des surfaces réfléchissantes de l’habitacle ainsi que la zone des yeux des occupants de manière à définir des zones d’ombre dans la zone de projection correspondant aux surfaces réfléchissantes et la zone des yeux.  According to another characteristic, the vehicle includes a device for detecting the reflective surfaces of the passenger compartment as well as the occupants' eye area so as to define shadow areas in the projection area corresponding to the reflective surfaces and the eye area .
D’autres caractéristiques et avantages de l’invention apparaîtront à l’examen de la description détaillée ci-après, et des dessins annexés, sur lesquels les figures illustrent schématiquement et fonctionnellement : Other characteristics and advantages of the invention will appear on examining the detailed description below, and the attached drawings, on which figures schematically and functionally illustrate:
- les figures 1 et 2, un mode de réalisation d’un système de projection lumineuse embarqué dans un véhicule selon l’invention ; et  - Figures 1 and 2, an embodiment of a light projection system on board a vehicle according to the invention; and
- la figure 3, un exemple de répartition spatiale des motifs lumineux projetés à l’intérieur de l’habitacle du véhicule selon l’invention.  - Figure 3, an example of spatial distribution of the light patterns projected inside the passenger compartment of the vehicle according to the invention.
Dans ce qui suit, on considère, à titre d’exemple non limitatif, que le véhicule est de type automobile. Mais l’invention n’est pas limitée à ce type de véhicule. Elle concerne en effet tout type de véhicule comportant un habitacle prévu pour recevoir des occupants transportés par le véhicule. Par conséquent, elle concerne tout aussi bien les véhicules terrestres, que les véhicules fluviaux (ou maritimes), et les véhicules aériens ou spatiaux.  In what follows, it is considered, by way of nonlimiting example, that the vehicle is of the automobile type. However, the invention is not limited to this type of vehicle. It concerns in fact any type of vehicle comprising a passenger compartment intended to receive occupants transported by the vehicle. Consequently, it relates just as well to land vehicles, as river (or maritime) vehicles, and air or space vehicles.
Le système de projection comporte un dispositif de projection couplé à un dispositif gyroscopique.  The projection system includes a projection device coupled to a gyroscopic device.
Le dispositif de projection comporte une source lumineuse pour produire un motif lumineux destiné à tapisser tout ou partie des surfaces intérieures de l’habitacle, ceci de manière à occuper un large espace visuel à trois dimensions permettant une perception du mouvement optimale via la vision périphérique (ambiance boule à facette).  The projection device comprises a light source to produce a light pattern intended to line all or part of the interior surfaces of the passenger compartment, this so as to occupy a large three-dimensional visual space allowing optimal perception of movement via peripheral vision ( mirror ball atmosphere).
Le dispositif gyroscopique est agencé pour supporter le poids du dispositif de projection et maintenir son orientation stable dans un espace gravitaire (axe vertical du dispositif de projection toujours aligné avec la verticale gravitaire, son axe horizontal toujours perpendiculaire à la gravité).  The gyroscopic device is designed to support the weight of the projection device and maintain its stable orientation in a gravity space (vertical axis of the projection device always aligned with the vertical gravity, its horizontal axis always perpendicular to gravity).
Plusieurs possibilités sont envisagées pour permettre les techniques de stabilisation (décrites ci-après).  Several possibilities are envisaged to allow the stabilization techniques (described below).
Le système de projection ainsi constitué permet de maintenir le motif lumineux projeté stable dans un référentiel terrestre, indépendamment du mouvement du véhicule. Lors du mouvement du véhicule, le motif lumineux projeté devient stable par rapport à l’environnement extérieur mais mobile dans le référentiel du véhicule et renseigne les occupants sur la dynamique de mouvement du véhicule.  The projection system thus formed makes it possible to keep the projected light pattern stable in a terrestrial frame of reference, independently of the movement of the vehicle. During the movement of the vehicle, the projected light pattern becomes stable with respect to the external environment but mobile in the vehicle repository and informs the occupants of the movement dynamics of the vehicle.
Dans un premier mode de réalisation, les deux dispositifs sont couplés physiquement entre eux (montage de l’un sur l’autre). Dans ce cas, le dispositif de projection lumineuse est physiquement couplé au dispositif gyroscopique via un dispositif de stabilisation mécanique. In a first embodiment, the two devices are physically coupled together (mounting one on the other). In this case, the light projection device is physically coupled to the gyroscopic device via a mechanical stabilization device.
Dans un autre mode de réalisation, les deux dispositifs sont physiquement séparés (deux dispositifs indépendants: dispositif de projection et dispositif gyroscopique séparés), mais l’information de mouvement du véhicule issus du dispositif gyroscopique est réinjecté électroniquement dans le dispositif de pilotage du dispositif de projection pour lui permettre d’être stabilisé dans un référentiel gravitaire. Dans ce cas, les données de mouvement du véhicule dans le référentiel gravitaire sont directement extraites du ou des dispositifs gyroscopiques déjà existant dans le véhicule et réinjectées via un algorithme de mouvement dans le dispositif de projection.  In another embodiment, the two devices are physically separate (two independent devices: separate projection device and gyroscopic device), but the vehicle movement information from the gyroscopic device is electronically fed back into the control device of the projection to allow it to be stabilized in a gravity frame of reference. In this case, the vehicle movement data in the gravity reference frame are directly extracted from the gyroscopic device or devices already existing in the vehicle and reinjected via a movement algorithm into the projection device.
On décrit ci-après le fonctionnement d’un stabilisateur gyroscopique multiaxe :  The operation of a multi-axis gyro stabilizer is described below:
Un stabilisateur gyroscopique deux axes permet de suivre les mouvements du véhicule en tangage (rotations autour de l’axe latéral du véhicule = accélérations rotationnelles qui rendent compte du freinage et des accélérations du véhicule) et en roulis (rotations autour de l’axe longitudinal du véhicule = accélérations rotationnelles qui rendent compte, de manière moins marquée que le lacet, de la prise de virage du véhicule). Dans ce cas de figure, les mouvements du véhicule qui correspondent aux mouvements de lacet (rotation autour de l’axe vertical du véhicule = accélérations rotationnelles qui rendent compte de manière plus marquée de la dynamique de virage) ne sont pas représentés.  A two-axis gyroscopic stabilizer makes it possible to follow the movements of the vehicle in pitch (rotations around the lateral axis of the vehicle = rotational accelerations which account for the braking and accelerations of the vehicle) and in roll (rotations around the longitudinal axis of the vehicle = rotational accelerations which account, in a less marked way than the yaw, for the turning of the vehicle). In this case, the movements of the vehicle which correspond to the yaw movements (rotation around the vertical axis of the vehicle = rotational accelerations which more clearly account for the cornering dynamics) are not shown.
Un stabilisateur gyroscopique trois axes permet de suivre également les mouvements en lacet (rotation autour de l’axe vertical du véhicule) en plus des mouvements du véhicule en roulis et en tangage (cf. stabilisateur deux axes).  A three-axis gyroscopic stabilizer also tracks yaw movements (rotation around the vertical axis of the vehicle) in addition to the vehicle's movements in roll and pitch (see two-axis stabilizer).
Dans ce cas de figure, les mouvements du motif lumineux projeté rendent compte de manière plus marquée de la dynamique du véhicule lors de la prise de virage.  In this case, the movements of the projected light pattern more clearly reflect the dynamics of the vehicle when cornering.
Les mouvements du motif lumineux projeté à l’intérieur de l’habitacle prennent en compte les mouvements de rotation du véhicule autour des trois axes X (longitudinal), Y (latéral) et Z (vertical) qui définissent un référentiel tridimensionnel habituellement utilisé pour représenter un véhicule dans l’espace. L’origine du référentiel est située généralement à proximité du centre de gravité du véhicule. Les trois types de mouvement (rotations) autour des axes X, Y et Z sont désignés respectivement par roulis, tangage et lacet. The movements of the light pattern projected inside the passenger compartment take into account the rotational movements of the vehicle around the three X (longitudinal), Y (lateral) and Z (vertical) axes which define a three-dimensional frame of reference usually used to represent a vehicle in space. The origin of the repository is generally located near the center of gravity of the vehicle. The three types of movement (rotations) around the X, Y and Z axes are designated respectively by roll, pitch and yaw.
Roulis : En cas de virage à droite (rotation dans le sens horaire lorsqu’on est face à la route), le motif lumineux projeté sur les parois penche vers la gauche de l’habitacle autour d’un axe sagittal (rotation du motif lumineux dans le sens antihoraire) proportionnellement à la dynamique du véhicule ; et ceci réciproquement lors d’un virage à gauche.  Roll: When turning right (clockwise rotation when facing the road), the light pattern projected on the walls leans to the left of the passenger compartment around a sagittal axis (rotation of the light pattern counterclockwise) in proportion to the vehicle dynamics; and vice versa during a left turn.
Tangage : En cas de freinage (tangage avant), le motif lumineux projeté monte sur les parois de l’habitacle proportionnellement à la dynamique du véhicule. De même que, lors d’une accélération (tangage arrière), le motif lumineux descend.  Pitch: In the event of braking (forward pitch), the projected light pattern rises on the walls of the passenger compartment in proportion to the dynamics of the vehicle. Just as, during an acceleration (back pitching), the light pattern descends.
Lacet : En cas de virage à droite (lacet dans le sens horaire lorsqu’on regarde le véhicule depuis le dessus), le motif lumineux projeté sur les parois dévie vers la gauche de l’habitacle autour d’un axe vertical proportionnellement à la dynamique du véhicule ; et ceci réciproquement lors d’un virage à gauche.  Yaw: In the case of a right turn (yaw clockwise when looking at the vehicle from above), the light pattern projected on the walls deviates to the left of the passenger compartment around a vertical axis proportional to the dynamics of the vehicle ; and vice versa during a left turn.
Dans le cas d’une dynamique plus complexe combinant les mouvements de tangage, de roulis et/ou de lacet, l’ensemble de la dynamique du véhicule est restitué visuellement par le mouvement du motif lumineux qui s’opère là aussi dans le sens opposé au mouvement du véhicule. Quel que soit le mouvement du véhicule, le motif lumineux reste projeté dans référentiel terrestre pour l’ensemble des deux ou trois axes : tangage, roulis / ou tangage, roulis et lacet.  In the case of a more complex dynamic combining the movements of pitch, roll and / or yaw, the entire dynamic of the vehicle is restored visually by the movement of the light pattern which also takes place in the opposite direction. the movement of the vehicle. Whatever the movement of the vehicle, the light pattern remains projected in the terrestrial frame of reference for all of the two or three axes: pitch, roll / or pitch, roll and yaw.
Le mouvement du motif lumineux est considéré à « accélération dépendante ». Cela signifie qu’à vitesse constante, il n’y a pas de mouvement du motif lumineux. On limite ainsi le mouvement principalement aux variations d’accélération.  The movement of the light pattern is considered to be "dependent acceleration". This means that at constant speed, there is no movement of the light pattern. The movement is thus mainly limited to variations in acceleration.
Dans une autre hypothèse envisageable le mouvement du motif lumineux pourrait être à « vitesse dépendante », permettant de restituer également une dynamique de vitesse à travers un défilement permanent du motif lumineux. On peut également envisager de coupler transitoirement les deux possibilités (accélération et vitesse). Dans cette hypothèse, la dynamique de vitesse (qui peut présenter un caractère nauséogène) ne pourrait être restituée qu’à certains moments de la conduite. In another conceivable hypothesis, the movement of the light pattern could be at “dependent speed”, making it possible to restore speed dynamics also through permanent scrolling of the bright pattern. We can also consider transiently coupling the two possibilities (acceleration and speed). In this hypothesis, the speed dynamics (which may be nauseating) could only be restored at certain times during driving.
L’idée supportée ici est de permettre aux occupants de percevoir visuellement les mouvements du véhicule dans un repère terrestre et de produire en conséquence en temps réel les ajustements posturaux adaptés aux mouvements du véhicule.  The idea supported here is to allow the occupants to visually perceive the movements of the vehicle in a terrestrial reference and to consequently produce in real time the postural adjustments adapted to the movements of the vehicle.
Deux types de dispositifs de pilotage de la stabilisation du dispositif gyroscopique sont envisagés par la présente invention :  Two types of devices for controlling the stabilization of the gyroscopic device are envisaged by the present invention:
Le premier type de pilotage est mécanique : il s’affranchit de toute source d'énergie pour son fonctionnement. Le pilotage consiste à compenser mécaniquement les mouvements physiques du véhicule et ne nécessite donc pas l’utilisation de sources extérieures, à l’image des systèmes stabilisateurs portatifs utilisés en cinéma et en télévision, permettant la prise de vues en « travellings » fluides, grâce à un système comportant généralement un harnais, un bras articulé, un système de stabilisation de caméra actif, mécanique.  The first type of control is mechanical: it eliminates any source of energy for its operation. Piloting consists in mechanically compensating for the physical movements of the vehicle and therefore does not require the use of external sources, like portable stabilizer systems used in cinema and television, allowing the taking of shots in fluid "traveling shots", thanks to a system generally comprising a harness, an articulated arm, an active, mechanical camera stabilization system.
Le deuxième type de pilotage est électronique : le pilotage de la stabilisation s’effectue via l’utilisation de modules électroniques externes :  The second type of control is electronic: stabilization control is carried out through the use of external electronic modules:
- un premier module apte à détecter le mouvement du véhicule (ou les récupérer via des dispositifs gyroscopiques déjà implémentés dans les véhicules) et  - a first module capable of detecting the movement of the vehicle (or recovering them via gyroscopic devices already implemented in the vehicles) and
- un deuxième module apte à restituer la compensation du mouvement souhaitée sur le dispositif de stabilisation.  - A second module capable of restoring the compensation for the desired movement on the stabilization device.
Qu’il soit mécanique ou électronique, le dispositif de pilotage de la stabilisation vise à permettre aux occupants d’appréhender visuellement la dynamique de la voiture et de produire en conséquence les ajustements posturaux adaptés à ces mouvements.  Whether mechanical or electronic, the stabilization control device aims to allow the occupants to visually understand the dynamics of the car and consequently produce the postural adjustments adapted to these movements.
Le dispositif de pilotage électronique permet en outre deux types de contrôle :  The electronic control device also allows two types of control:
- un contrôle en temps réel Les mouvements du véhicule sont détectés en temps réel et permettent la projection du motif lumineux en temps réel dans le sens opposé aux mouvements du véhicule. Sans modification des lois de contrôle du dispositif de pilotage la finalité est identique à celle obtenue via le type de pilotage mécanique. - real time control The movements of the vehicle are detected in real time and allow the projection of the light pattern in real time in the opposite direction to the movements of the vehicle. Without modification of the control laws of the piloting device, the purpose is identical to that obtained via the type of mechanical piloting.
- un contrôle anticipé  - advance control
Le but de ce contrôle est de pouvoir anticiper les futurs mouvements du véhicule (dans une fenêtre temporelle de quelques secondes ou centaines de millisecondes (fenêtre optimale de 250-350 ms d’après la littérature) et de contrôler avec un court délai d’avance, la projection des motifs lumineux avec un algorithme de compensation déterminé, sur les parois (surfaces non vitrées) de l’habitacle.  The purpose of this control is to be able to anticipate future movements of the vehicle (in a time window of a few seconds or hundreds of milliseconds (optimal window of 250-350 ms according to the literature) and to control with a short lead time , the projection of light patterns with a determined compensation algorithm, on the walls (non-glazed surfaces) of the passenger compartment.
Le contrôle anticipé permet aux occupants de prédire visuellement via la projection des motifs lumineux, les futurs mouvements du véhicule et de produire en conséquence les ajustements posturaux (anticipés) adaptés à ces futurs mouvements.  The anticipated control allows the occupants to predict visually via the projection of the light patterns, the future movements of the vehicle and to consequently produce the postural adjustments (anticipated) adapted to these future movements.
Les figures 1 et 2 illustrent schématiquement un exemple de véhicule selon l’invention, ici un véhicule automobile VA, embarquant un système de projection SP dans l’habitacle H d’un véhicule automobile VA.  Figures 1 and 2 schematically illustrate an example of a vehicle according to the invention, here a motor vehicle VA, embedding a projection system SP in the cabin H of a motor vehicle VA.
Le système de projection SP comporte un dispositif de projection lumineuse DP monté de manière articulée sur un dispositif gyroscopique DG via un dispositif de stabilisation SM (ou stabilisateur gyroscopique) multiaxe (2 ou 3 axes) permettant de projeter un motif lumineux ML sur l’ensemble ou partie des surfaces de l’habitacle d’un véhicule VA en mouvement. Le motif lumineux projeté ML, représente par exemple un nuage de points lumineux qui sont agencés de manière à produire une impression visuelle à trois dimensions.  The projection system SP comprises a light projection device DP articulated mounted on a gyroscopic device DG via a multi-axis stabilization device SM (or gyroscopic stabilizer) (2 or 3 axes) making it possible to project a light pattern ML onto the whole or part of the passenger compartment surfaces of a moving VA vehicle. The projected light pattern ML, for example represents a cloud of light points which are arranged so as to produce a three-dimensional visual impression.
Le dispositif gyroscopique DG et le dispositif de projection DP sont implantés sous le pavillon PV du véhicule VA et de préférence dans la partie arrière du pavillon PV pour être en mesure de projeter le motif lumineux ML de manière optimale sur les surfaces extérieures des parois latérales de l’habitacle H, le reste du pavillon PV, l’arrière des sièges (dossier, appui-tête), la planche de bord du véhicule VA. Le système de projection SP comporte en outre un dispositif DS de suivi des mouvements du véhicule VA et un dispositif de pilotage DC apte à commander le dispositif de projection DP et le dispositif gyroscopique DG en fonction des mouvements du véhicule VA. The gyroscopic device DG and the projection device DP are installed under the roof of the vehicle VA and preferably in the rear part of the roof of the vehicle to be able to project the light pattern ML optimally on the exterior surfaces of the side walls of the passenger compartment H, the rest of the PV roof, the rear of the seats (backrest, headrest), the dashboard of the VA vehicle. The projection system SP further comprises a device DS for monitoring the movements of the vehicle VA and a piloting device DC capable of controlling the projection device DP and the gyroscopic device DG as a function of the movements of the vehicle VA.
Le dispositif de projection DP est apte à projeter le motif lumineux ML sur les surfaces non réfléchissantes de l’habitacle H, dans des directions déterminées par le dispositif de pilotage DC, et en dehors de la zone des yeux des occupants présents dans l’habitacle H du véhicule VA.  The projection device DP is capable of projecting the light pattern ML onto the non-reflecting surfaces of the passenger compartment H, in directions determined by the control device DC, and outside the eye area of the occupants present in the passenger compartment H of the vehicle VA.
La figure 3 illustre un exemple de couverture spatiale du motif lumineux ML dans l’habitacle d’un véhicule automobile. Cette couverture spatiale exclut les zones de projection sur les vitres pour éviter toute réflexion intempestive des sources de lumière (pare-brise, fenêtres et rétroviseur intérieur) ainsi que la zone des yeux, pour ne pas éblouir ou gêner les occupants.  FIG. 3 illustrates an example of spatial coverage of the light pattern ML in the passenger compartment of a motor vehicle. This spatial coverage excludes the projection zones on the windows to avoid any untimely reflection of the light sources (windshield, windows and rear view mirror) as well as the eye area, so as not to dazzle or disturb the occupants.
Pour prendre en compte ces zones sensibles, les surfaces réfléchissantes ainsi que la zone des yeux sont par exemple préalablement identifiées de manière à définir des « zones d’ombre » dans la zone de projection que ce soit par des réglages préalables du système, des caches mécaniques.  To take these sensitive areas into account, the reflective surfaces as well as the eye area are, for example, previously identified so as to define “shadow areas” in the projection area, whether by prior adjustments to the system, to covers mechanical.
Le système peut par ailleurs utiliser un dispositif d’identification et de traitement automatique des zones sensibles comportant un scanner qui scanne ces zones sensibles pour les rendre spécifiquement non concernées par la restitution lumineuse.  The system can also use an automatic identification and processing device for sensitive areas comprising a scanner which scans these sensitive areas to make them specifically unaffected by light output.
Dans un premier mode de réalisation, le dispositif de projection lumineuse, mobile en rotation, comporte une source lumineuse éclairant une sphère, surmontée de petits miroirs à la manière d’une boule à facettes. La réflexion de la lumière sur les miroirs génère par exemple le nuage de points 3D, destinée à tapisser l’intérieur de l’habitacle du véhicule (ambiance boule à facette).  In a first embodiment, the light projection device, mobile in rotation, comprises a light source illuminating a sphere, surmounted by small mirrors in the manner of a faceted ball. The reflection of light on the mirrors, for example, generates the 3D point cloud, intended to line the interior of the passenger compartment of the vehicle (mirror ball atmosphere).
Dans un deuxième mode de réalisation, la source lumineuse est constituée d’un ou plusieurs lasers produisant un ensemble de faisceaux laser projetés sur un miroir pivotant motorisé destiné à réfléchir le motif lumineux à l’intérieur de l’habitacle du véhicule (à l’instar des projecteurs laser multi- ambiance, dont la projection graphique peut être modulée et pilotée tel que décrit dans le document EP3004725A). In a second embodiment, the light source consists of one or more lasers producing a set of laser beams projected on a motorized pivoting mirror intended to reflect the light pattern inside the passenger compartment of the vehicle (at the like multi-laser projectors atmosphere, the graphic projection of which can be modulated and controlled as described in the document EP3004725A).
Dans un troisième mode de réalisation, le dispositif de projection lumineuse comporte une source lumineuse qui éclaire l’intérieur de l’habitacle depuis une ou plusieurs LEDs permettant d’afficher une structure visuelle dans l’habitacle.  In a third embodiment, the light projection device comprises a light source which illuminates the interior of the passenger compartment from one or more LEDs making it possible to display a visual structure in the passenger compartment.
Dans un quatrième mode de réalisation, le dispositif de projection lumineuse, mobile en rotation, comporte une source lumineuse qui éclaire l’intérieur de l’habitacle depuis un masque ou un filtre, criblé de petits trous Ainsi, le passage de la lumière à travers les petits trous crée une structure lumineuse particulière (par exemple, un nuage de points) sur les parois de l’habitacle du véhicule.  In a fourth embodiment, the light projection device, mobile in rotation, comprises a light source which illuminates the interior of the passenger compartment from a mask or a filter, riddled with small holes. Thus, the passage of light through the small holes create a special light structure (for example, a point cloud) on the walls of the vehicle interior.
Dans un cinquième mode de réalisation, le système de projection lumineuse comporte un vidéoprojecteur qui permet de diffuser n’importe quel type de motifs lumineux, fixes ou animées, permettant d’apporter une structure lumineuse particulière sur les parois de l’habitacle (nuage de points, quadrillage, maillage, motif lumineux polarisée, paysage).  In a fifth embodiment, the light projection system comprises a video projector which makes it possible to diffuse any type of light patterns, fixed or animated, making it possible to provide a particular light structure on the walls of the passenger compartment (cloud of dots, grid, mesh, polarized light pattern, landscape).
En synthèse, les avantages apportés par l’invention sont notamment : In summary, the advantages brought by the invention are in particular:
- le système de projection peut s’intégrer facilement dans l’habitacle d’un véhicule existant, sans avoir besoin de l’intégrer dès la conception de l’habitacle ; - the projection system can be easily integrated into the passenger compartment of an existing vehicle, without the need to integrate it from the design of the passenger compartment;
- faible coût de production (principe simple : structuration lumineuse + stabilisateur) ;  - low production cost (simple principle: light structuring + stabilizer);
- adaptable (les zones de projections peuvent être adaptées pour ne concerner qu’une partie de l’habitacle) et actionnable à la demande ;  - adaptable (the projection zones can be adapted to concern only part of the passenger compartment) and can be activated on request;
- pas invasif pour les occupants (ne se surajoute pas à leur équipement) et les laisse libres de réaliser n’importe quel type d’activité dans l’habitacle ; et  - not invasive for the occupants (does not add to their equipment) and leaves them free to carry out any type of activity in the passenger compartment; and
- peut se raccorder à une prestation de bien-être / détente, par la modulation personnalisable de la couleur ou de la forme de la structuration visuelle souhaitée (motif lumineux, icônes, vagues ...). Cette invention s’intégre parfaitement dans les problématiques du mal des transports et particulièrement au regard des nouveaux modes d’usage de la voiture suscités par le développement du véhicule autonome (les conducteurs deviendront concernés par le mal des transports : 90 % des occupants des véhicules seront désormais concernés). - can be connected to a service of well-being / relaxation, by the customizable modulation of the color or the shape of the desired visual structure (light pattern, icons, waves ...). This invention fits perfectly into the problems of motion sickness and particularly with regard to the new modes of car use prompted by the development of the autonomous vehicle (drivers will become affected by motion sickness: 90% of vehicle occupants will now be affected).
Cette invention pourra également s’exporter vers d’autres marchés que celui de l’automobile car elle peut s’implémenter dans tous les modes de transport avec habitacle susceptibles d’occasionner le mal des transports (voiture, bus, train, bateau, avion...). En agissant directement à sa source, elle constitue à ce jour une contremesure prometteuse pour lutter efficacement contre le mal des transports.  This invention can also be exported to other markets than that of the automobile because it can be implemented in all modes of transport with passenger compartment likely to cause motion sickness (car, bus, train, boat, plane ...). By acting directly at its source, it constitutes to date a promising countermeasure to fight effectively against motion sickness.
Cette invention pourra également servir à fournir de l’information lumineuse relative à de l’aide à la conduite grâce à l’affichage de signaux d’alerte, de direction (voyants/ flèches...), etc., permettant de rediriger l’attention du conducteur vers la route en fonction de l’état de la route mais également de l’état détecté du conducteur (somnolence ...)  This invention can also be used to provide light information relating to driving assistance by means of the display of warning and direction signals (warning lights / arrows, etc.), making it possible to redirect the '' attention of the driver towards the road depending on the state of the road but also on the detected state of the driver (drowsiness ...)
Cette invention pourra à l’inverse permettre aux occupants de se détacher de la tâche de conduite (contexte de conduite autonome) dans une optique de confort et de bienêtre avec des ambiances personnalisables.  Conversely, this invention could allow the occupants to detach themselves from the driving task (context of autonomous driving) with a view to comfort and well-being with customizable atmospheres.

Claims

REVENDICATIONS
1 . Véhicule (VA) comportant un habitacle (H) apte à recevoir des occupants et dans lequel est implanté un système de projection lumineuse (SP), ledit système (SP) comportant un dispositif de projection (DP) apte à projeter au moins un motif lumineux (ML) à l’intérieur de l’habitacle (H), couplé à un dispositif gyroscopique (DG), un dispositif (DS) de suivi des mouvements du véhicule (V) et un dispositif de pilotage (DC) apte à commander le dispositif de projection (DP) et le dispositif gyroscopique (DG) en fonction des mouvements du véhicule (VA) ; ledit dispositif de projection (DP) projetant le motif lumineux (ML) sur au moins une surface non réfléchissante de l’habitacle (H), dans au moins une direction déterminée par le dispositif de pilotage (DC), et en dehors de la zone des yeux des occupants présents dans l’habitacle (H) du véhicule (VA), dans lequel le dispositif de projection (DP) est couplé mécaniquement au dispositif gyroscopique (DG) via un dispositif de stabilisation multiaxe (SM) permettant de compenser les mouvements physiques du véhicule (V) en fonction des informations délivrées par le dispositif de pilotage (DC). 1. Vehicle (VA) comprising a passenger compartment (H) capable of receiving occupants and in which a light projection system (SP) is installed, said system (SP) comprising a projection device (DP) capable of projecting at least one light pattern (ML) inside the passenger compartment (H), coupled to a gyroscopic device (DG), a device (DS) for monitoring the movements of the vehicle (V) and a piloting device (DC) capable of controlling the projection device (DP) and the gyroscopic device (DG) according to the movements of the vehicle (VA); said projection device (DP) projecting the light pattern (ML) on at least one non-reflecting surface of the passenger compartment (H), in at least one direction determined by the piloting device (DC), and outside the area the eyes of the occupants present in the passenger compartment (H) of the vehicle (VA), in which the projection device (DP) is mechanically coupled to the gyroscopic device (DG) via a multi-axis stabilization device (SM) making it possible to compensate for movements physical characteristics of the vehicle (V) as a function of the information supplied by the control device (DC).
2. Véhicule (VA) selon la revendication 1 , dans lequel le motif lumineux 2. Vehicle (VA) according to claim 1, in which the light pattern
(ML) forme un nuage de points lumineux. (ML) forms a cloud of luminous points.
3. Véhicule (VA) selon l’une des revendications précédentes, dans lequel la direction de projection du motif lumineux (ML) est opposée à celle du mouvement du véhicule (VA).  3. Vehicle (VA) according to one of the preceding claims, in which the direction of projection of the light pattern (ML) is opposite to that of the movement of the vehicle (VA).
4. Véhicule (VA) selon l’une des revendications précédentes, dans lequel le dispositif de pilotage (DP) pilote la direction de la projection de manière à compenser en temps réel ou de manière anticipée les mouvements physiques du véhicule (VA).  4. Vehicle (VA) according to one of the preceding claims, in which the piloting device (DP) controls the direction of the projection so as to compensate in real time or in advance for the physical movements of the vehicle (VA).
5. Véhicule (VA) selon l’une des revendications précédentes, dans lequel le dispositif de projection (DP) comporte une source lumineuse à une ou plusieurs LEDs ou une source laser.  5. Vehicle (VA) according to one of the preceding claims, in which the projection device (DP) comprises a light source with one or more LEDs or a laser source.
6. Véhicule (VA) selon l’une des revendications précédentes, dans lequel le dispositif de projection (DP) comporte une source lumineuse et un masque disposé devant la source lumineuse ; le masque comportant une pluralité de trous. 6. Vehicle (VA) according to one of the preceding claims, in which the projection device (DP) comprises a light source and a mask arranged in front of the light source; the mask comprising a plurality of holes.
7. Véhicule (VA) selon l’une des revendications 1 à 5, caractérisé en ce que le dispositif de projection (DP), mobile en rotation, comporte une source lumineuse et au moins un dispositif réfléchissant, disposé en regard de la source lumineuse apte à réfléchir la lumière à la manière d’une boule à facettes.  7. Vehicle (VA) according to one of claims 1 to 5, characterized in that the projection device (DP), movable in rotation, comprises a light source and at least one reflecting device, arranged opposite the light source able to reflect light like a mirror ball.
8. Véhicule (VA) selon l’une des revendications 1 à 4, dans lequel le dispositif de projection (DP) comporte un vidéoprojecteur apte à projeter une ou plusieurs images fixes ou animées.  8. Vehicle (VA) according to one of claims 1 to 4, wherein the projection device (DP) comprises a video projector capable of projecting one or more still or moving images.
9. Véhicule (VA) selon l’une des revendications précédentes, comportant un dispositif de détection des surfaces réfléchissantes de l’habitacle (H) ainsi que la zone des yeux des occupants de manière à définir des zones d’ombre dans la zone de projection correspondant aux surfaces réfléchissante et la zone des yeux.  9. Vehicle (VA) according to one of the preceding claims, comprising a device for detecting the reflective surfaces of the passenger compartment (H) and the eye area of the occupants so as to define areas of shadow in the area of projection corresponding to the reflecting surfaces and the eye area.
PCT/FR2019/052167 2018-10-05 2019-09-18 Vehicle provided with a light projection system in the passenger compartment of the vehicle WO2020070402A1 (en)

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FR1859240A FR3086898B1 (en) 2018-10-05 2018-10-05 VEHICLE ON BOARD A LUMINOUS PROJECTION SYSTEM IN THE VEHICLE'S COCKPIT

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