• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    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).
    公开号:FR3086898A1
    申请号:FR1859240
    申请日:2018-10-05
    公开日:2020-04-10
    发明作者:Aurore Bourrelly；Clement Bougard；Whilk Marcelino Goncalves；Stephanie Schneider；Christophe Bourdin；Lionel Bringoux；Jean Louis Vercher
    申请人:Aix Marseille Universite；Centre National de la Recherche Scientifique CNRS；PSA Automobiles SA；
    IPC主号:
    专利说明:

    VEHICLE EMPLOYING A LIGHT PROJECTION SYSTEM IN THE VEHICLE INTERIOR
    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".
    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.
    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.
    It implements a screen or video projection area 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.
    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.
    It implements glasses carrying a matrix of light-emitting diodes on the branches.
    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:
    - 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.
    - 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.
    - the potentially invasive character for the retina of systems comprising assemblies of light diodes;
    - the obligation to wear glasses in the case of the device on board the occupant.
    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, rear view mirror ...).
    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 ...).
    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.
    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 onto at least one non-reflecting surface of the passenger compartment, in at least one direction determined by the piloting device, and outside the eye area of the occupants present in the passenger compartment of the vehicle.
    According to one characteristic, the light pattern forms a cloud of light points.
    According to another characteristic, the direction of projection of the light pattern is opposite to that of the movement of the vehicle.
    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.
    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.
    According to another characteristic, the projection device comprises a light source with one or more LEDs or a laser source.
    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.
    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.
    According to another characteristic, the projection device comprises a video projector capable of projecting one or more still or moving images.
    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 .
    Other characteristics and advantages of the invention will appear on examining the detailed description below, and the attached drawings, in which the figures illustrate schematically and functionally:
    - Figures 1 and 2, an embodiment of a light projection system on board a vehicle according to the invention; and
    - Figure 3, an example of spatial distribution of the light patterns projected inside the passenger compartment of the vehicle according to the invention.
    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.
    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).
    Several possibilities are envisaged to allow the stabilization techniques (described below).
    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.
    In a first embodiment, the two devices are physically coupled to each other (mounting one on the other).
    In this case, the light projection device is physically coupled to the gyroscopic device via a mechanical stabilization device.
    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.
    The operation of a multi-axis gyro stabilizer is described below:
    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.
    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).
    In this case, the movements of the projected light pattern more clearly reflect the dynamics of the vehicle when cornering.
    The movements of the light pattern projected inside the passenger compartment take into account the rotational movements of the vehicle around the three axes X (longitudinal), Y (lateral) and Z (vertical) 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.
    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.
    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.
    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.
    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.
    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.
    In another conceivable hypothesis, the movement of the light pattern could be at "dependent speed", making it possible also to restore a dynamic speed through a permanent scrolling of the light pattern. We can also consider transiently coupling the two possibilities (acceleration and speed). In this case, the speed dynamics (which can be nauseating) could only be restored at certain times during driving.
    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.
    Two types of devices for controlling the stabilization of the gyroscopic device are envisaged by the present invention:
    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) and
    - A second module capable of restoring the compensation for the desired movement on the stabilization device.
    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.
    The electronic control device also allows two types of control:
    - 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.
    - advance control
    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.
    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.
    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.
    The SP projection system includes a light projection device DP articulated on a gyroscopic device DG via a multi-axis stabilization device SG (or gyroscopic stabilizer) (2 or 3 axes) allowing to project a light pattern ML on 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 PV roof of the VA vehicle and preferably in the rear part of the PV roof 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 control 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.
    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.
    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.
    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).
    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-ambiance laser projectors, the graphic projection of which can be modulated and controlled as described in document EP3004725A).
    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.
    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 creates a particular light structure (for example, a point cloud) on the walls of the vehicle interior.
    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).
    In summary, the advantages brought by the invention are in particular:
    - 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;
    - low production cost (simple principle: light structuring + stabilizer);
    - adaptable (the projection zones can be adapted to concern only part of the passenger compartment) and can be activated on request;
    - 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
    - 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).
    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 ...)
    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.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    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 vehicle movements (V) and a piloting device (DC) capable of control 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).
    [2" id="c-fr-0002]
    2. Vehicle (VA) according to claim 1, in which the light pattern (ML) forms a cloud of light points.
    [3" id="c-fr-0003]
    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" id="c-fr-0004]
    4. Vehicle (VA) according to one of the preceding claims, in which the projection device (DP) is mechanically coupled to the gyroscopic device (DG) via a multi-axis stabilization device (SG) making it possible to compensate for the physical movements of the vehicle ( V) according to the information delivered by the piloting device (DC).
    [5" id="c-fr-0005]
    5. 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).
    [6" id="c-fr-0006]
    6. 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.
    [7" id="c-fr-0007]
    7. Vehicle (VA) according to one of the preceding claims, in which the projection device (DP) comprises a light source and a mask placed in front of the light source; the mask comprising a plurality of holes.
    5
    [8" id="c-fr-0008]
    8. Vehicle (VA) according to one of claims 1 to 6, characterized in that the projection device (DP), mobile 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.
    ίο
    [9" id="c-fr-0009]
    9. Vehicle (VA) according to one of claims 1 to 5, wherein the projection device (DP) comprises a video projector capable of projecting one or more still or moving images.
    [10" id="c-fr-0010]
    10. Vehicle (VA) according to one of the preceding claims, comprising a device for detecting the reflective surfaces of the passenger compartment 15 (H) as well as the area of the eyes of the occupants so as to define areas of shadow in the area projection corresponding to the reflecting surfaces and the eye area.
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    同族专利:
    公开号 | 公开日
    FR3086898B1|2020-12-04|
    WO2020070402A1|2020-04-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2681528A1|1991-09-20|1993-03-26|Zeitoun Alain|Optokinetic stimulator which can serve for vestibular re-education|
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    FR3056802A1|2016-09-28|2018-03-30|Valeo Vision|LIGHTNING ALERT DEVICE FOR MOTOR VEHICLE|
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    DE102017207788A1|2017-05-09|2018-11-15|Volkswagen Aktiengesellschaft|motor vehicle|
    US20190061655A1|2017-08-23|2019-02-28|Alpine Electronics, Inc.|Method and apparatus for motion sickness prevention|
    GB2567856A|2017-10-27|2019-05-01|Jaguar Land Rover Ltd|Anti-motion sickness device|
    US20210160457A1|2019-11-22|2021-05-27|Guardian Optical Technologies Ltd.|Device for monitoring vehicle occupant|
    EP3964399A1|2020-09-03|2022-03-09|Inalfa Roof Systems Group B.V.|Device for counteracting motion sickness in a vehicle|
    法律状态:
    2019-09-19| PLFP| Fee payment|Year of fee payment: 2 |
    2020-04-10| PLSC| Search report ready|Effective date: 20200410 |
    2020-09-17| PLFP| Fee payment|Year of fee payment: 3 |
    2021-09-22| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1859240A|FR3086898B1|2018-10-05|2018-10-05|VEHICLE ON BOARD A LUMINOUS PROJECTION SYSTEM IN THE VEHICLE'S COCKPIT|FR1859240A| FR3086898B1|2018-10-05|2018-10-05|VEHICLE ON BOARD A LUMINOUS PROJECTION SYSTEM IN THE VEHICLE'S COCKPIT|
    PCT/FR2019/052167| WO2020070402A1|2018-10-05|2019-09-18|Vehicle provided with a light projection system in the passenger compartment of the vehicle|
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