• 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:
    The invention relates to a method for controlling a display means on board a motor vehicle, characterized in that it comprises: a first step of determining the presence of a disturbance in front of the vehicle during which it is verified that at least one parameter representative of the presence of a disturbance in front of the vehicle fulfills at least one predetermined condition, - a second step of generating a display instruction which is triggered when the predetermined conditions are met. and during which a display instruction of a pictogram representative of the disturbance on the display means is transmitted by an electronic control unit.
    公开号:FR3049528A1
    申请号:FR1652986
    申请日:2016-04-05
    公开日:2017-10-06
    发明作者:Joel Li；Kedar Sathaye
    申请人:Valeo Vision SA；
    IPC主号:
    专利说明:

    "Automatic display control method of a pictogram representative of the presence of a disturbance in front of the vehicle"
    TECHNICAL FIELD OF THE INVENTION The invention relates to a method of controlling a display means on board a motor vehicle, the display means comprising a display area visible from the outside of the vehicle, the means of display being configured to selectively display each of the pictograms from a list of several predetermined pictograms, each predetermined pictogram being representative of a given situation.
    BACKGROUND ART OF THE INVENTION
    The vehicles in circulation can stop or at least slow down significantly for various reasons including compliance with regulatory signs, for example a stop sign or a red light or the presence of a disturbance in front of the vehicle.
    Disturbance ahead of the vehicle may be formed by: - users crossing the road, such as pedestrians, cyclists, other motor vehicles or animals; - the presence of a road congestion; the presence of weather conditions significantly reducing the visibility of the driver, such as fog or heavy rain.
    Regulatory signals are generally arranged in a visible manner on the road so that they can be seen from the following vehicles when a first vehicle stops.
    On the other hand, in the case of a disturbance in front of the vehicle, it may happen that the first vehicle slowing down or stopping masks the presence of the disturbance to the drivers of the following vehicles. In some cases, the following drivers may be tempted to overtake the vehicle during a slowdown or stop while ignoring the presence of the disturbance. Such a situation is therefore particularly dangerous.
    BRIEF SUMMARY OF THE INVENTION The invention proposes a method which makes it possible to warn the following drivers of the presence of a disturbance in front of the vehicle. For this purpose, the invention thus proposes a control method of the type described above, characterized in that the method comprises: a first step of determining the presence of a disturbance in front of the vehicle during which it is verified that at least one parameter representative of the presence of a disturbance in front of the vehicle fulfills at least one predetermined condition, a second step of generating a display instruction which is triggered when the predetermined conditions are fulfilled and during of which a display instruction of a pictogram representative of said disturbance in front of the vehicle on the display means is transmitted by an electronic control unit.
    According to other characteristics of the invention: a first parameter representative of the presence of a disturbance in front of the vehicle is formed by the speed of the vehicle, the condition associated with filling in the first step being that the vehicle is traveling in below a predetermined threshold; a second parameter representative of the presence of a disturbance in front of the vehicle is formed by the operating state of a brake control of the vehicle, the condition associated with filling in the first step being that the brake control is operated beyond a predetermined degree; the vehicle is equipped with at least one remote-sensing device that is able to detect the presence of an obstacle in front of the vehicle, a second condition for the presence of a user being that an obstacle appears in front of the vehicle at a distance less than a predetermined distance; the vehicle is equipped with at least one remote sensing device that is able to detect the presence of a moving obstacle in front of the vehicle, a third condition being that a barrier that is movable transversely with respect to the longitudinal direction of movement of the vehicle be detected in front of the vehicle; a parameter representative of the presence of a disturbance in front of the vehicle is formed by the detection of an obstacle in front of the vehicle by at least one device before remote sensing, a condition of presence of an obstacle is that an obstacle is detected on the road of the vehicle at a distance greater than a predetermined distance, and that the distance with the obstacle becomes lower than a predetermined value in front of the vehicle; the vehicle is equipped with at least one remote sensing device which is able to detect the presence of a user of the road behind the vehicle, a pictogram display condition being that a following vehicle is detected at a distance less than a predetermined value behind the vehicle; the remote sensing device comprises at least one emitter of an electromagnetic signal and an associated sensor for receiving said electromagnetic signal after reflection on an obstacle situated in front of the vehicle, such as a lidar; - The remote sensing device comprises at least one emitter of a sound signal, including ultrasound, and an associated sensor for receiving said sound signal after reflection on an obstacle; the remote sensing device is formed by at least one proximity sensor; - The remote sensing device comprises a camera which is capable of capturing a sequence of images and an electronic control unit which is able to analyze the images to recognize the presence of an obstacle; the vehicle comprises means for recognizing road signs, when a stop sign or a red light is detected, the second step not being engaged when a condition of presence of a mandatory stopping signal of the vehicle is filled; the recognition means comprise an image capture camera towards the front of the vehicle and an electronic control unit able to implement an image recognition method; - the vehicle is equipped with a driving assistance device that is able to detect the presence of a fog sheet in front of the vehicle, a condition of presence of an obstacle in front of the vehicle being filled when a fog layer is detected; - The motor vehicle comprises at least one display means which is arranged at the rear of the vehicle. The invention also relates to a system for displaying at least one pictogram on a motor vehicle comprising: - display means comprising a display area intended to be arranged on the vehicle to be visible from outside the vehicle ; at least one device for detecting parameters representative of the presence of a disturbance in front of the vehicle; an electronic control unit of the display means which is connected to the detection device and to the display means in order to be able to control the display of a pictogram representative of the presence of a disturbance in front of the vehicle according to the parameters representative of the presence of a disturbance in front of the vehicle.
    According to another characteristic of the display system, each device for detecting parameters representative of the presence of a disturbance in front of the vehicle is chosen from the following list: a vehicle speed sensor; a sensor for actuating a vehicle braking command; - a front remote sensing device located at the front of the vehicle; - Road sign recognition means; a driving assistance device which is able to detect the presence of an area of reduced visibility in front of the vehicle; - a rear remote sensing device which is located at the rear of the vehicle. The invention also relates to a motor vehicle comprising a display system made according to the teachings of the invention.
    BRIEF DESCRIPTION OF THE FIGURES Other features and advantages of the invention will emerge during the reading of the detailed description which follows for the understanding of which reference will be made to the appended drawings in which: FIG. 1 is a rear view which schematically represents a vehicle provided with two pictogram display signaling devices able to apply the method produced according to the teachings of the invention; FIG. 2 is a detail view which schematically represents a signaling device with pictogram display; FIG. 3 is a perspective view which schematically represents an embodiment of the display means according to the invention; FIG. 4 is a view from above which schematically represents the means of display of FIG. 3; FIGS. 5A to 5F show examples of pictograms that can be displayed by the display means of the vehicle; FIG. 6 is a diagram which represents an embodiment of the invention implementing an electronic control unit of the display means as a function of data provided by on-board sensors on the vehicle; - Figure 7 is a top view which schematically shows a motor vehicle provided with remote sensing devices for measuring parameters representative of the presence of disturbance in front of the vehicle and the presence of a following vehicle behind the vehicle; FIG. 8 is a block diagram which illustrates the steps of the process carried out according to the teachings of the invention.
    DETAILED DESCRIPTION OF THE FIGURES
    In the remainder of the description, elements having an identical structure or similar functions will be designated by the same references.
    There is shown in Figure 1 a vehicle carrying a display means. This display means comprises a display area visible to road users from outside the vehicle.
    In the example shown in Figure 1, the vehicle 20 is provided with two devices 21A, 21B signaling light with display means 22A, 22B pictograms. Each display means 22A, 22B comprises a display area 24A, 24B arranged at the rear of the vehicle 20, substantially where a signaling rear light is usually located. Thus, a first display means 22A is arranged on the left side of the vehicle 20, while a second display means 22B is arranged on the right side of the vehicle 20.
    Alternatively, the vehicle comprises a single display means which is arranged at the rear of the vehicle.
    The means 22A, 22B display function as the luminous display of pictograms on the display area 24A, 24B. The display area 24A, 24B thus has an illuminated surface according to the shape of the pictogram, said illuminated surface emitting a light beam called "pictogram beam".
    According to another variant not shown, the motor vehicle comprises at least one display means which is arranged on the sidewall and / or at the front of the vehicle. This variant can be combined with the presence of at least one display means at the rear of the vehicle.
    The pictograms can be used to participate in a regulatory signaling function. They can also be used independently of the use of regulatory signaling function.
    The regulatory photometric characteristics of traffic lights such as sidelights, direction indicators, brake lights or fog lamps are well defined. They concern in particular the ranges of minimum and maximum luminous intensity to be respected, the angle of visibility of the beam, the color of the beam, the surface of the luminous surface of the function, or the minimum distance between different functions.
    When the pictogram display is used to perform a regulatory signaling function, the signaling device 21 A, 21 B can be implemented according to two embodiments.
    In a first embodiment of the signaling device 21A, 21B, shown in FIG. 1, the display means 22A, 22B are configured so that the pictogram beam is capable of fulfilling the regulatory photometric characteristics on its own. a defined signaling function. In this embodiment, the display means is thus designed to display pictograms set to emit a pictogram light beam that meets all the regulatory requirements of a particular signaling function.
    A single pictogram can in particular fulfill several functions simultaneously or alternately, such as a flashing and a position light. Several pictograms can also be displayed simultaneously or alternatively, each pictogram fulfilling the photometric characteristics of a different function of the traffic light.
    Preferably and advantageously, the signaling function carried out with certain pictograms is a position light function or a combined lantern and brake light function.
    In a second embodiment of the device 21A, 21 B signaling shown in Figure 2, the device 21 A, 21 B comprises additional means 26 signaling. These complementary means 26 are provided to provide a complementary beam which is added to the pictogram beam produced by the display means. The combination of the complementary beam and the beam of the pictogram makes it possible to produce an overall light beam that reaches the regulatory photometric characteristics that are not completely filled by the beam of the pictogram alone. The complementary means 26 are provided with at least one complementary zone 28, 30, here two, each capable of transmitting a complementary light beam. Thus, thanks to the complementary means 26, the signaling device 21 A, 21 B provides a global light beam which fulfills the regulatory photometric characteristics.
    The complementary means 26 are, for example, light devices used for common signaling functions, and which are independent of the display means 22A, 22B. They comprise a light source capable of emitting light rays, for example one or more light-emitting diodes, and light-ray distribution means on the complementary zone 28, 30, the complementary zone 28, transmitting the light rays by forming the light-emitting diode. complementary beam. The distribution means may be a light guide or a reflector.
    When a pictogram appears or it changes shape, the complementary means 26 provide substantially simultaneously the appropriate complementary beam, for example to widen the angle of visibility and / or the light area of the overall beam.
    As illustrated in the embodiment of FIG. 2, the signaling device 21A, 21B may comprise several complementary means 26, here two, one per function. The two complementary zones 28, 30 are arranged at least partly around the display zone 24A, 24B of the pictogram. A first adjacent complementary zone 30 surrounds the display zone 24A, 24B, and serves as a complement to the position light function - possibly combined with a stop function. A second complementary zone 28 partially surrounds the first complementary zone 30 and serves as a complement to the direction indicator function (flashing). In addition, a reflex reflector 9 completes the turn of the first complementary zone 30.
    Regardless of the embodiment chosen for the signaling device 21A, 21B, the display means is designed to display a detailed pictogram clearly visible by a user of the road, both at night and during the day. By way of non-limiting example, four exemplary embodiments of such display means 22A, 22B are described below.
    According to a first embodiment of the display means 22A, 22B, not shown in the figures, each display means is a screen of the liquid crystal, plasma or light-emitting diode type, the display area 24A, 24B of the device 21 A, 21 B signaling being that of the screen.
    According to a second embodiment of the display means 22A, 22B, not shown in the figures, the display means 22A, 22B comprise a surface light guide comprising groups of prism-like structures or cavities on one of its faces. side. The structures are designed to return to an opposite face of light selectively injected by one of the slices. There is thus a screen with areas illuminated selectively by the slices. This type of display is described for example in documents FR2994248 and US2013314944.
    According to a third embodiment of the display means 22A, 22B shown in FIGS. 3 and 4, the display means 22A, 22B comprise at least one laser source 32, for example a laser diode with or without photoluminescent element, suitable for forming a laser beam, a transmission surface 34 defining the display area 24A, 24B, and scanning means 36 configured to scan the transmission surface 34 with the laser beam. The transmission surface 34 is for example arranged on a window 38 of closing the fire. The laser beam that comes from the laser source 32 is intended to illuminate the transmission surface 34.
    The laser beam projects on the transmission surface 34 a light trace which has a dot shape. The scanning of the light trace is accomplished by the scanning means 36 at a speed sufficiently large that the human eye does not perceive its displacement on the transmission surface 34.
    Here, the scanning means 36 are a mobile micro-mirror, for scanning the transmission surface 34 by reflection of the laser beam. The micro-mirrors mentioned as scanning means are for example MEMS type (for "Micro-Electro-Mechanical Systems" in English or microsystem electromechanical). However, the invention is not limited to this scanning means and can use other kinds of scanning means, such as a series of mirrors arranged on a rotating element, the rotation of the element generating a scan of the surface transmission by the laser beam.
    The scanning of the laser beam by the scanning means 36 makes it possible to display pictograms on the transmission surface 34, the scanning means 36 being controlled for example by a control unit.
    According to a fourth embodiment of the display means, not shown, the display means comprise at least one light source formed of at least one light emitting diode, a transmission surface defining the display area, and a matrix micro-mirrors configured to reflect the light rays from the at least one light source to the transmission surface. The transmission surface is for example arranged on the closing glass of the fire or is formed by a translucent screen placed behind the closure glass. The light beam that comes from the light source is intended to illuminate the transmission surface.
    In this latter embodiment, the display means comprise a matrix of micro-mirrors (also known by the acronym DMD for the English Digital Micromirror Device) which directs the light rays by reflection. The light rays are reflected in two possible directions: either towards the optical focusing system, or in a different direction from the focusing optical system.
    Whatever the embodiment of the display means, the display means is configured to selectively display each of the pictograms from a list of several predetermined pictograms, each predetermined pictogram being representative of a given situation. FIGS. 5A to 5F show some examples of pictograms that can be displayed alternately on the display zone 24A, 24B, and two types of which are distinguished, for example.
    In general, a pictogram is a graphic sign representative of a situation whose meaning is likely to be understood quickly. The pictogram includes a stylized figurative design and / or alphanumeric symbols.
    Subsequently, the invention will relate more particularly to a method of displaying pictograms representative of a disturbance in front of the vehicle. According to a non-limiting example, these pictograms are formed by: a pedestrian crossing in front of the vehicle as shown in FIG. 5A; an exclamation point warning of a danger as illustrated in FIG. 5B;
    - Several vehicles with a road congestion as shown in Figure 5C - an entry warning in a reduced visibility area as shown in Figure 5D, - a prohibition to double as shown in Figure 5E.
    The method also relates to the display of an alert for respecting the safety distance as illustrated in FIG. 5F.
    Some pictograms can be dynamic, playing on their size, movement and blinking. For example the pictogram warning of crossing a pedestrian shown in Figure 5A, for which the pedestrian can blink or grow dynamically. In another example, the pictogram concerning the safety distance illustrated in FIG. 5F for which the size and the distance between the blocks 42 and 44, which symbolize vehicles, can dynamically evolve in real time as a function of the effective distance between the vehicle 20 and a next vehicle.
    An exemplary embodiment of the signaling device 21 A, 21 B and its operation is illustrated in FIG. 6. In addition to the display means 22A, 22B, the signaling device 21A, 21B here comprises an electronic unit 46 and sensors 48 embedded in the vehicle 20. The sensors 48 are configured to detect or calculate certain parameters. All these sensors 48 are connected to the electronic control unit 46 to provide these parameters. The electronic control unit 46 is configured to automatically control the display of a pictogram representative of a given situation according to the parameters measured by the sensors 48. For this purpose, it develops display instructions that it transmits. to the display means 22A, 22B. The electronic control unit 46 comprises for example a memory in which a list of predetermined pictograms is recorded. The electronic control unit 46 selects the pictogram to be displayed from the pictogram list according to the situation. It can also dynamically evolve the drawing of the pictogram according to these parameters.
    In the corresponding embodiment, the electronic control unit 46 also sends commands to the complementary means 26 to coordinate with the display means 22A, 22B of the pictogram. Thus, the beam of the pictogram and the complementary beam are coordinated to fulfill the regulatory photometric characteristics.
    In the case of a pair of signaling devices 21A, 21B, each display means 22A, 22B can be controlled independently of each other by the electronic control unit 46.
    According to the teachings of the invention, the display means 22A, 22B described above are used to prevent subsequent drivers from the presence of a disturbance in front of the vehicle by automatically displaying a pictogram representative of said disturbance. This display thus allows the next driver to slow down and not to start a risky dubbing maneuver.
    FIG. 7 is a schematic view from above of the vehicle 20.
    The vehicle 20 is equipped with at least one remote sensing device 48 which is able to detect the presence of an obstacle in front of or behind the vehicle 20. The vehicle 20 is for example equipped with at least one of the devices before remote sensing described below.
    Such a remote sensing device 48 makes it possible in particular to measure the distance between the detected obstacle and said remote sensing device 48. In general, the distance measurements are made at high frequencies so as to allow a substantially continuous follow-up of the evolution of the distance between the vehicle 20 and the obstacle.
    A first device 48A before remote sensing comprises at least one emitter of an electromagnetic signal facing the front of the vehicle 20 and an associated sensor for receiving said electromagnetic signal after reflection on an obstacle situated in front of the vehicle 20. Such a device 48A before remote sensing is for example formed by a lidar or a radar.
    A second device 48B before remote sensing comprises at least one emitter of a sound signal to the front of the vehicle 20, including ultrasound, and an associated sensor for receiving said sound signal after reflection on an obstacle. The vehicle 20 is here equipped with four devices 48B before remote sensing which are distributed transversely to the front of the vehicle 20. This allows to determine accurately the position of the obstacle relative to the vehicle 20.
    Alternatively, the second remote sensing device is formed by at least one proximity sensor.
    A third device 48C before remote sensing includes a camera that is capable of capturing a sequence of images of the road ahead of the vehicle 20 and an electronic control unit that is able to analyze the images to recognize the presence of an obstacle.
    Some of these detection devices also make it possible to detect whether the obstacle is movable transversely relative to the longitudinal direction of movement of the vehicle 20 is detected in front of the vehicle 20. This is particularly the case of all second devices 48B before remote sensing which are distributed at the front of the vehicle 20. The combined measurements of these four devices 48B before remote sensing allow the electronic control unit 46 to determine that an obstacle is movable and the direction of movement of this obstacle. This is also the case of the third device 48C before remote sensing which transmits a chronological sequence of images to the electronic control unit 46. The analysis of the position of the obstacle on these different images allows to know its direction of movement.
    The vehicle 20 is also equipped with at least one remote sensing device which is able to detect the presence of a user of the road behind the vehicle 20. Rear remote sensing devices 48D are here devices similar to the second devices 48B described previously. Another remote sensing device 48E here is a device similar to the third device 48C described above. Of course these devices are here arranged to detect an obstacle located behind the vehicle 20.
    The vehicle 20 is also equipped with a driving assistance device (not shown) which is able to detect the presence of an area of reduced visibility in front of the vehicle 20, such as a fog sheet. Such a device uses for example the devices 48A to 48C before remote sensing described above to detect the presence of a reduced visibility area. An example of such a device and its operation are described in detail in EP-A-2.743.130.
    The vehicle 20 illustrated in FIG. 7 thus embeds a display system 60 made according to the teachings of the invention. The display system 60 thus comprises: a display means 22A, 22B comprising a display area 24A, 24B intended to be arranged on the vehicle 20 to be visible from the outside of the vehicle; at least one device for detecting parameters representative of the presence of a disturbance in front of the vehicle 20; an electronic control unit of the display means 22A, 22B which is connected to the detection device and to the display means 22A, 22B in order to be able to control the display of a pictogram representative of the presence of a disturbance forward of the vehicle 20 according to the parameters representative of the presence of a disturbance in front of the vehicle 20.
    The device or devices for detecting parameters representative of the presence of a disturbance in front of the vehicle 20 are chosen from the following list: a vehicle speed sensor 20; an actuation sensor of a vehicle braking control 20; a front remote sensing device 48 situated at the front of the vehicle 20; - Road sign recognition means; a driving assistance device which is able to detect the presence of an area of reduced visibility in front of the vehicle 20; a rear 48D, 48E remote sensing device which is located at the rear of the vehicle (20).
    With reference to the block diagram of FIG. 8, the method comprises a first step "E1" for determining a disturbance in front of the vehicle 20 during which the electronic control unit 46 checks that one or more representative parameters a disturbance in front of the vehicle 20 fulfill predetermined conditions. The parameters are measured by sensors 48 adapted during a previous step "E0".
    When the predetermined conditions are fulfilled, a second step "E2" of generating a display instruction is automatically triggered. During this second step "E2", the electronic control unit 46 sends a display instruction of a pictogram representative of said disturbance on at least one display means 22A, 22B.
    It is expected that the pictogram representative of the disturbance in front of the vehicle 20 remains displayed on the display means concerned for a predetermined duration.
    According to a first embodiment of the invention, the disturbance determined during the first step is the presence of a user crossing the road in front of the vehicle 20. When such a disturbance is detected, the electronic control unit 46 emits a display instruction of a pictogram such as that shown in Figure 5A which shows a pedestrian crossing the street.
    In a variant, the electronic control unit 46 issues a display instruction for an alert pictogram such as that represented in FIG. 5B.
    A condition to be fulfilled during the first step "E1" in order to be able to trigger the second step "E2" concerns the state of movement of the vehicle 20.
    Thus, a first parameter representative of the presence of a disturbance in front of the vehicle 20 is formed by the speed of the vehicle 20. The speed parameter of the vehicle 20 is measured by a speed sensor (not shown) of the vehicle 20. This is for example a speed sensor traditionally used to indicate to the driver the instantaneous speed of the vehicle 20 by display on the dashboard.
    The condition "C1" of speed associated with filling in the first step "E1" being that the vehicle 20 rolls below a predetermined threshold speed. The speed threshold is very low, for example less than 20 km / h.
    Alternatively, the condition "C1" speed is met when the speed of the vehicle 20 is zero. In this case, the predetermined speed threshold is set to zero.
    A second parameter representative of the presence of a disturbance in front of the vehicle 20 is formed by the operating state of a braking control of the vehicle 20. The condition "C2" braking associated to fill in the first step "E1" is that the brake control is operated beyond a predetermined degree. For this purpose, the vehicle comprises a sensor for actuating a braking command. It is for example a sensor that detects the degree of depression of a brake pedal controlling the braking device of the vehicle. In fact, it is considered that the first reflex of a driver seeing a pedestrian beginning to cross is to brake in a strong way.
    The "C1" speed condition and / or the "C2" braking condition, however, are not sufficient to characterize a road crossing situation by a moving obstacle, such as a pedestrian. At least one of these conditions "C1", "C2" relating to the state of displacement of the vehicle 20 must be accumulated with at least one condition of presence of an obstacle in front of the vehicle 20.
    A third parameter representative of the presence of a disturbance in front of the vehicle 20 is formed by the detection of an obstacle in front of the vehicle 20 by at least one of the front remote sensing devices 48 located at the front of the vehicle 20 A condition "C3" of presence of an obstacle is that a user is detected as appearing on the road of the vehicle 20 at a distance less than a predetermined value in front of the vehicle 20, for example less than 10 m. The term "appearing" means that the obstacle has not been detected at a distance greater than said determined value.
    Thus, this condition "C3" makes it possible to distinguish a user crossing the road from a road congestion. During a road congestion, the stopped vehicles are indeed detected at a great distance by the devices 48 before remote sensing, the distance between the bulk and the vehicle 20 gradually decreasing. On the contrary, a user crossing the road appears on the path of the vehicle 20 at a relatively short distance, said user not being in the path of the vehicle 20 before starting to cross.
    A fourth parameter representative of the presence of a disturbance in front of the vehicle 20 is formed by the detection of a moving obstacle transversely relative to the direction of longitudinal displacement of the vehicle 20. This parameter is detected by at least one of the devices 48B, 48C before remote sensing equipping the front of the vehicle 20. A second condition "C4" of presence of an obstacle is that the obstacle detected in front of the vehicle 20 moves transversely.
    The combination of at least one of the conditions "C1", "C2" of the state of movement of the vehicle 20 with at least one of the conditions "C3", "C4" of presence of an obstacle in front of the vehicle 20 makes it possible to detect a crossing situation of the road by a user such as a pedestrian, an animal, a bicycle or another motor vehicle. Such a combination thus makes it possible to effectively warn the following drivers of the reason for stopping or slowing down the vehicle 20.
    According to a variant of this first embodiment, in addition to the conditions "C1", "C2" of the state of movement of the vehicle 20 and the conditions "C3", "C4" of presence of an obstacle in front of the vehicle 20, foolproofing conditions are added so as not to display the pictogram when the vehicle 20 is stopped because of the presence of mandatory stop signs such as a "stop" sign or a red light. For this purpose, the vehicle 20 comprises means for recognizing road signs. This is for example the camera 48C which transmits an image of the road ahead of the vehicle 20 to the electronic control unit 46. The latter is able to analyze the image to recognize the presence of a stop sign or a red light.
    Alternatively, the vehicle 20 is equipped with a sensor capable of receiving a signal emitted by a red light emitting a signal representative of a prohibition to pass.
    When a stop sign or a red light is detected during the first step "E1", the second step "E2" is not engaged. Thus, the pictogram is not displayed when a pedestrian crosses the road while the vehicle 20 is stopped at a red light or at a stop. Such road signs are indeed visible for the following drivers, so it is not necessary to report the presence of pedestrians.
    According to a second embodiment of the invention, the disturbance determined during the first step is the presence of a road congestion in front of the vehicle 20. When such a disturbance is detected, the electronic control unit 46 emits a display instruction of a pictogram such as that shown in Figure 5C which shows several vehicles in line.
    In a variant, the electronic control unit 46 issues a display instruction for an alert pictogram such as that represented in FIG. 5B.
    A condition to be fulfilled during the first step "E1" in order to be able to trigger the second step "E2" concerns the state of movement of the vehicle 20.
    Thus, a first parameter representative of the presence of a disturbance in front of the vehicle 20 is formed by the speed of the vehicle 20. The speed parameter of the vehicle 20 is measured by a speed sensor (not shown) of the vehicle 20. This is for example a speed sensor traditionally used to indicate to the driver the instantaneous speed of the vehicle 20 by display on the dashboard.
    The "C1" speed condition associated with filling in the first step "E1" is that the vehicle 20 rolls below a predetermined speed threshold.
    A second parameter representative of the presence of a disturbance in front of the vehicle 20 is formed by the operating state of a braking control of the vehicle 20. The condition "C2" braking associated to fill in the first step "E1" is that the brake control is operated beyond a predetermined degree. This is for example the degree of depression of a brake pedal controlling the braking device of the vehicle 20. It is considered that the first reflex of a driver perceiving a road congestion, such as a plug or a slowdown, is to brake in a strong way.
    In a variant, the "C2" braking condition is combined with an additional "C2bis" initial speed condition which is met when the initial speed of the vehicle 20, just before the braking condition "C2" is satisfied, is greater than one. determined threshold, for example 90 km / h. Thus, the following drivers are only notified when the vehicle is driving on a fast road such as a highway. Road congestion is indeed particularly dangerous on this type of road.
    The "C1" speed condition and / or the "C2" braking condition, however, are not sufficient to characterize a road congestion situation. At least one of these conditions "C1", "C2" relating to the state of displacement of the vehicle 20 must be accumulated with at least one condition of presence of an obstacle in front of the vehicle 20.
    A third parameter representative of the presence of a disturbance in front of the vehicle 20 is formed by the detection of an obstacle in front of the vehicle 20 by at least one of the front remote sensing devices 48 located at the front of the vehicle 20 A condition "C3" of presence of an obstacle is that an obstacle is detected on the road of the vehicle 20 at a distance greater than a predetermined distance, for example greater than 200 m, and that the gap with the obstacle becomes smaller than a predetermined value in front of the vehicle 20, for example less than 50 m.
    As a variant, the condition of presence of an obstacle is fulfilled when the distance between the vehicle 20 and an obstacle detected forward decreases at a speed greater than a determined speed threshold.
    According to a variant of this first embodiment, in addition to the conditions "C1", "C2" of the state of displacement of the vehicle 20 and the condition "C3" of presence of an obstacle in front of the vehicle 20, conditions are added. keying so as not to display the pictogram when the vehicle 20 is stopped due to the presence of mandatory stop signs. For this purpose, the vehicle 20 comprises means for recognizing road signs. This is for example the camera 48C which transmits an image of the road ahead of the vehicle 20 to the electronic control unit 46 is able to analyze the image to recognize the presence of a stop sign, a red light, the approach of a toll, etc.
    When a stop sign or a red light is detected during the first step "E1", the second step "E2" is not engaged.
    According to a third embodiment of the invention, the disturbance determined during the first step is the presence of a reduced visibility zone in front of the vehicle 20.
    When such a disturbance is detected, the electronic control unit 46 emits a display instruction of a pictogram such as that shown in FIG. 5D.
    In a variant, the electronic control unit 46 issues a display instruction for an alert pictogram such as that represented in FIG. 5B.
    A condition "C4" to be fulfilled during the first step "E1" so as to be able to trigger the second step "E2" is the detection of a zone of reduced visibility by the driver assistance device such as that described in the document EP-A-2743130.
    Optionally, an associated "C2" braking condition to be filled in the first step "E1" is added cumulatively. The condition "C2" of braking is fulfilled when the brake control is operated beyond a predetermined degree. This is for example the degree of depression of a brake pedal controlling the braking device of the vehicle 20. It is considered in fact that the first reflex of a driver seeing an area of reduced visibility is to brake reluctantly .
    In a variant, the "C2" braking condition is combined with an additional "C2bis" initial speed condition which is met when the initial speed of the vehicle 20, just before the braking condition "C2" is satisfied, is greater than one. determined threshold, for example 90 km / h. Thus, the following drivers are only notified when the vehicle is driving on a fast road such as a highway. The areas with reduced visibility are indeed particularly dangerous on this type of road.
    According to a fourth embodiment of the invention, the disturbance determined during the first step is the presence of another vehicle on an adjacent doubling lane in front of the vehicle 20. When such a disturbance is detected, the unit electronic control 46 sends a display instruction of a pictogram such as that shown in Figure 5E representing a prohibition to double.
    In a variant, the electronic control unit 46 issues a display instruction for an alert pictogram such as that represented in FIG. 5B.
    A condition to be fulfilled during the first step "E1" to be able to trigger the second step "E2" concerns the presence of a vehicle following the road behind the vehicle 20.
    Thus, a first parameter representative of the presence of a user behind the vehicle 20 is formed by the distance between the vehicle 20 and a next vehicle. This parameter is measured by the 48D, 48E remote sensing devices. The associated condition is that the next vehicle is at a distance less than a predetermined distance, for example 10 m.
    Alternatively, a next vehicle approach speed condition is met which is filled when the distance between the vehicle 20 and the next vehicle decreases at a speed greater than a determined speed.
    A second parameter is the presence of an obstacle in front and on an adjacent track with respect to the vehicle 20. This parameter is detected by the devices 48 before remote sensing of the vehicle 20.
    A condition to be fulfilled is that an obstacle is detected on the adjacent doubling channel.
    A second condition to be fulfilled is that the distance between the obstacle and the vehicle 20 decreases at a speed greater than a determined speed.
    Thus, when a next vehicle is approaching from the rear at a relatively high speed, the probability that this next vehicle wishes to double the vehicle 20 is quite high. When, in addition, another vehicle occupying the adjacent laneing channel is detected, the pictogram display makes it possible to warn the next vehicle that it is impossible to overtake.
    The method produced according to the teachings of the invention thus makes it possible to warn road users of the presence of a disturbance in front of the vehicle 20. This allows the road users following the vehicle 20 implementing the method according to the invention. the invention to anticipate a braking of the vehicle 20 or the impossibility of doubling.
    The method applied to the previously described 21 A, 21 B signaling device makes it possible to display a pictogram which complies with the regulatory requirements relating to traffic lights. Thus, when the stop lights or position lights of the vehicle 20 are lit, the pictogram participates, or even performs entirely, said regulatory function.
    As a variant, during the first step "E1" of the process carried out according to any one of the preceding embodiments, there is an additional condition for detecting the presence of a following vehicle behind the vehicle 20. This makes it possible to trigger the second step "E2" only when a following vehicle is present. This avoids displaying a pictogram when no next vehicle is present.
    When the motor vehicle comprises at least one display means which is arranged on the side of the vehicle in addition to the display means arranged at the rear, the display means are controlled simultaneously to prevent third parties who are already at height the vehicle of the presence of a disturbance in front of the vehicle 20.
    权利要求:
    Claims (18)
    [1" id="c-fr-0001]
    A method of controlling on-vehicle display means (22A, 22B) on a vehicle (20), the display means (22A, 22B) having a display area (24A, 24B) visible from the outside the vehicle, the display means (22A, 22B) being configured to selectively display each of the pictograms from a list of several predetermined pictograms, each predetermined pictogram being representative of a given situation, characterized in that the method comprises: a first step (E1) of determining the presence of a disturbance in front of the vehicle during which it is verified that at least one parameter representative of the presence of a disturbance in front of the vehicle fulfills at least one predetermined condition; a second step (E2) of generating a display instruction which is triggered when the predetermined conditions are fulfilled and during which a display instruction of a n pictogram representative of said disturbance in front of the vehicle on the display means (22A, 22B) is emitted by an electronic control unit (46).
    [2" id="c-fr-0002]
    2. Method according to the preceding claim, characterized in that a first parameter representative of the presence of a disturbance in front of the vehicle is formed by the speed of the vehicle, the condition associated with filling in the first step (E1) being that the vehicle rolls below a predetermined threshold.
    [3" id="c-fr-0003]
    3. Method according to any one of the preceding claims, characterized in that a second parameter representative of the presence of a disturbance in front of the vehicle is formed by the operating state of a brake control of the vehicle, the condition associated with filling in the first step (E1) being that the brake control is operated beyond a predetermined degree.
    [4" id="c-fr-0004]
    4. Method according to any one of the preceding claims, characterized in that the vehicle is equipped with at least one remote sensing device which is able to detect the presence of an obstacle in front of the vehicle, a second condition of presence of a user being that an obstacle appears in front of the vehicle at a distance less than a predetermined distance.
    [5" id="c-fr-0005]
    5. Method according to any one of the preceding claims, characterized in that the vehicle is equipped with at least one remote sensing device which is able to detect the presence of a moving obstacle in front of the vehicle, a third condition being that an obstacle movable transversely to the longitudinal direction of movement of the vehicle is detected in front of the vehicle.
    [6" id="c-fr-0006]
    6. Method according to any one of claims 1 to 3, characterized in that a parameter representative of the presence of a disturbance in front of the vehicle (20) is formed by the detection of an obstacle in front of the vehicle ( 20) by at least one device before remote sensing, a condition of presence of an obstacle is that an obstacle is detected on the road of the vehicle (20) at a distance greater than a predetermined distance, and that the deviation with the obstacle becomes lower than a predetermined value in front of the vehicle (20).
    [7" id="c-fr-0007]
    7. Method according to any one of the preceding claims, characterized in that the vehicle is equipped with at least one remote sensing device which is able to detect the presence of a user of the road behind the vehicle, a condition of displaying the pictogram being that a next vehicle is detected at a distance less than a predetermined value behind the vehicle.
    [8" id="c-fr-0008]
    8. Method according to any one of claims 4 to 7, characterized in that the remote sensing device comprises at least one emitter of an electromagnetic signal and an associated sensor for receiving said electromagnetic signal after reflection on an obstacle situated in front of the vehicle, such as a lidar.
    [9" id="c-fr-0009]
    9. Method according to any one of claims 4 to 7, characterized in that the remote sensing device comprises at least one emitter of a sound signal, including ultrasound, and an associated sensor for receiving said sound signal after reflection on a obstacle.
    [10" id="c-fr-0010]
    10. Method according to any one of claims 4 to 7, characterized in that the remote sensing device is formed by at least one proximity sensor.
    [11" id="c-fr-0011]
    11. Method according to any one of claims 4 to 6, characterized in that the remote sensing device comprises a camera which is capable of capturing a sequence of images and an electronic control unit which is able to analyze the images to recognize the presence of an obstacle.
    [12" id="c-fr-0012]
    12. Method according to any one of the preceding claims, characterized in that the vehicle comprises means for recognizing road signs, when a stop sign or a red light is detected, the second step not being engaged when a condition of presence of a mandatory stopping signal of the vehicle is fulfilled.
    [13" id="c-fr-0013]
    13. Method according to the preceding claim, characterized in that the recognition means comprise an image capture camera towards the front of the vehicle and an electronic control unit adapted to implement an image recognition method.
    [14" id="c-fr-0014]
    14. Method according to any one of the preceding claims, characterized in that the vehicle is equipped with a driving assistance device which is able to detect the presence of a fog sheet in front of the vehicle, a condition presence of an obstacle in front of the vehicle being filled when a fog sheet is detected.
    [15" id="c-fr-0015]
    15. Method according to any one of the preceding claims, characterized in that the vehicle (20) has at least one display means (22A, 22B) which is arranged at the rear of the vehicle.
    [16" id="c-fr-0016]
    16. A display system (60) of at least one pictogram on an automobile vehicle (20) comprising: display means (22A, 22B) comprising a display area (24A, 24B) intended to be arranged on the vehicle (20) to be visible from outside the vehicle; at least one device for detecting parameters representative of the presence of a disturbance in front of the vehicle (20); an electronic control unit for the display means (22A, 22B) which is connected to the detection device and the display means (22A, 22B) so as to be able to control the display of a pictogram representative of the presence of a disturbance in front of the vehicle (20) as a function of the parameters representative of the presence of a disturbance in front of the vehicle (20).
    [17" id="c-fr-0017]
    17. Display system (60) according to the preceding claim, characterized in that each device for detecting parameters representative of the presence of a disturbance in front of the vehicle (20) is selected from the following list: - a sensor of vehicle speed (20); an actuation sensor of a vehicle braking control (20); - a device (48) before remote sensing located at the front of the vehicle (20); - Road sign recognition means; a driving assistance device which is able to detect the presence of an area of reduced visibility in front of the vehicle (20); - a rear remote sensing device (48D, 48E) which is located at the rear of the vehicle (20).
    [18" id="c-fr-0018]
    18. Vehicle (20) automobile comprising a display system according to any one of claims 16 or 17.
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    同族专利:
    公开号 | 公开日
    FR3049528B1|2019-04-05|
    KR20180132668A|2018-12-12|
    WO2017174674A1|2017-10-12|
    US20190126816A1|2019-05-02|
    JP2019511066A|2019-04-18|
    EP3439917A1|2019-02-13|
    US10960815B2|2021-03-30|
    CN109070794A|2018-12-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP1728681A1|2005-06-01|2006-12-06|Virginia Cremona|Communication method and signalling arrangement for vehicle|
    FR2958894A1|2010-04-14|2011-10-21|Peugeot Citroen Automobiles Sa|Method for providing information between vehicle e.g. taxi, and persons located at exterior of vehicle, involves broadcasting information message such that information is seen and/or listened in part of environment of vehicle|
    FR2992743A1|2012-07-02|2014-01-03|Peugeot Citroen Automobiles Sa|Device for providing information about collision risk to driver of car following another car, has analyzing unit determining projection angle of holographic image based on average height position of eyes of driver of following car|
    US8954252B1|2012-09-27|2015-02-10|Google Inc.|Pedestrian notifications|
    US20150179063A1|2013-12-23|2015-06-25|Basem Albert Aziz|Pedestrian-warning light system for vehicles|
    US20150194082A1|2014-01-03|2015-07-09|John Arthur MCEWAN|Systems, devices, and methods for displaying accessories and information from a vehicle|
    DE102014206575A1|2014-01-10|2015-07-16|Heiho ICHINO|Driving warning devices for cars|WO2020104561A1|2018-11-21|2020-05-28|Arrival Limited|Apparatus and method for warning of an oncoming vehicle|EP1083076A3|1999-09-07|2005-01-12|Mazda Motor Corporation|Display apparatus for vehicle|
    JP4241834B2|2007-01-11|2009-03-18|株式会社デンソー|In-vehicle fog determination device|
    CN101746312A|2008-12-15|2010-06-23|谢飞|Automobile tail information display|
    WO2013133464A1|2012-03-09|2013-09-12|Lg Electronics Inc.|Image display device and method thereof|
    JP2017074820A|2015-10-13|2017-04-20|スズキ株式会社|Notification system for vehicle|
    US9969326B2|2016-02-22|2018-05-15|Uber Technologies, Inc.|Intention signaling for an autonomous vehicle|JP6894301B2|2017-06-09|2021-06-30|株式会社小松製作所|Work vehicle|
    KR20200057865A|2018-11-16|2020-05-27|현대모비스 주식회사|Apparatus and method for transmitting driving information of vehicle|
    GB2584139B|2019-05-23|2021-05-19|Ford Global Tech Llc|Motor vehicle display systems|
    CN112744152A|2019-10-30|2021-05-04|长城汽车股份有限公司|Control method and system for starting function of car lamp and car|
    KR102187372B1|2020-07-30|2020-12-04|주식회사 지엘로지스틱|Notification system for accident danger zone detection and accident prevention|
    法律状态:
    2017-04-28| PLFP| Fee payment|Year of fee payment: 2 |
    2017-10-06| PLSC| Publication of the preliminary search report|Effective date: 20171006 |
    2018-04-26| PLFP| Fee payment|Year of fee payment: 3 |
    2019-04-29| PLFP| Fee payment|Year of fee payment: 4 |
    2020-04-30| PLFP| Fee payment|Year of fee payment: 5 |
    2021-04-29| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1652986A|FR3049528B1|2016-04-05|2016-04-05|METHOD FOR CONTROLLING AUTOMATIC DISPLAY OF A PICTOGRAM REPRESENTATIVE OF THE PRESENCE OF A PERTURBATION IN FRONT OF THE VEHICLE|
    FR1652986|2016-04-05|FR1652986A| FR3049528B1|2016-04-05|2016-04-05|METHOD FOR CONTROLLING AUTOMATIC DISPLAY OF A PICTOGRAM REPRESENTATIVE OF THE PRESENCE OF A PERTURBATION IN FRONT OF THE VEHICLE|
    CN201780026810.6A| CN109070794A|2016-04-05|2017-04-05|There is the method for the picto-diagram interfered shown automatically for control representation vehicle front|
    EP17716502.4A| EP3439917A1|2016-04-05|2017-04-05|Method for controlling the automatic display of a pictogram representing the presence of a disturbance ahead of a vehicle|
    JP2018552235A| JP2019511066A|2016-04-05|2017-04-05|Method for controlling the automatic display of a pictogram indicating the presence of an obstacle in front of a vehicle|
    US16/091,402| US10960815B2|2016-04-05|2017-04-05|Method for controlling the automatic display of a pictogram representative of the presence of a disruption in front of the vehicle|
    PCT/EP2017/058147| WO2017174674A1|2016-04-05|2017-04-05|Method for controlling the automatic display of a pictogram representing the presence of a disturbance ahead of a vehicle|
    KR1020187028677A| KR20180132668A|2016-04-05|2017-04-05|Method for controlling automatic display of a pictogram indicating the presence of a distress situation in front of a vehicle|
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