• 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:
    "Method of managing a head-up display device and device for its implementation" Method for managing a head-up display device (2) of a vehicle (1), consisting of: a) determining the viewing direction of at least one eye of the driver (15), b) checking whether the direction of gaze of the driver's eye (15) is in the direction of the head-up display device (2), c) modifying the display (11) of the head-up display device to improve the legibility of the information if the viewing direction of the driver's eye (15) is directed on the display (11) of the display device head up (2).
    公开号:FR3030789A1
    申请号:FR1562952
    申请日:2015-12-21
    公开日:2016-06-24
    发明作者:Alexander Mueller；Christian Motz
    申请人:Robert Bosch GmbH；
    IPC主号:
    专利说明:

    [0001] FIELD OF THE INVENTION The present invention relates to a method for managing a head-up display device fitted to a vehicle, in particular a motor vehicle, this head-up display device having at least one piece of information. The invention also relates to a vehicle display device, especially a motor vehicle having a head-up display device and a control device. STATE OF THE ART Heads-up display devices are known which are increasingly used in the automobile industry in order to facilitate the driver's control of the most important driving parameters. Thus, a head-up display device according to the state of the art projects information on the windshield, in the lower zone of the driver's field of vision. In order to perceive information displayed by the display device, the driver can thus not completely leave the eyes of the road, but it is sufficient that he slightly turns his gaze downwards to focus on the display of the device. head-up display.
    [0002] According to the document DE 103 38 647 A1 it is furthermore possible to detect the position of the driver's head or the direction of his gaze by means of a sensor for adjusting the brightness of a light signal integrated in a rearview mirror of the vehicle. DESCRIPTION AND ADVANTAGES OF THE INVENTION The subject of the present invention is a method for managing a head-up display device of a vehicle, in particular of a motor vehicle, the head-up display device displaying at least one information item. this method of determining the direction of the gaze of at least one eye of the driver, verifying whether the direction of the driver's eye is in the direction of the head-up display device, changing the display of the display device head-up to improve the legibility of the information if the direction of the driver's eye of the driver is directed on the display of the head-up display device.
    [0003] The method according to the invention has the advantage of automatically detecting whether or not the driver is looking at the head-up display device or the roadway. In particular, the method makes it possible to cut the display of the head-up display device to put it at rest, that is to say in a state in which it is cut when the driver does not look at the display device head up so that the display of the head-up display device is no longer or almost no longer perceived by the driver and that reciprocally if the direction of the gaze of at least one eye of the driver is oriented towards the display of the dispo - Display head up, this display will be modified so that the information presented to the driver is legible. This displayed information shall not be legible or remain barely recognizable and legible when the display of the HUD is at rest and this information shall be presented to the driver only by a modification of the display to make it clearly detectable and releasable. In addition, by checking whether the direction of gaze of at least one eye of the driver is directed towards the display of the head-up display device, this verification can be used to grant other driving assistance functions. For example, the driver can be specifically warned of a dangerous traffic situation when looking at the display of the head-up display device, thereby modifying the display of the head-up display device and / or by shifting the instant of the warning signal. Thanks to the method according to the invention, the driver will be less disturbed by the display of the display device in the idle state and he will be more confident to look at the display of the head-up display device because he will know that he will be warned of a dangerous or risky driving situation by modifying the display of the head-up display device and / or by a warning signal by means of a sensor fitted to the vehicle. This results in better use by the driver. According to another development of the invention, the display is modified by increasing the contrast of the display. Alternatively or additionally, the display is modified by increasing the brightness. According to another characteristic, alternatively or additionally, the display is modified by increasing the sharpness. In a variant or in addition, according to another characteristic, the display is modified by enlarging the presentation of the information. According to a preferred development of the invention, if the direction of the gaze of at least one eye of the driver is oriented towards the display of the head-up display device, the display is modified so that by comparison with the state in the display of the head-up display device, one or more characteristics, namely the contrast, the brightness and the sharpness of the display will be increased and / or at least the information presented in the display will be enlarged. Thus, in the idle state, the display of the head-up display device, in comparison with the modified state of the display, will be less contrasting, less luminous and / or less sharp and / or with displayed information which is smaller. It is only when the driver looks towards the head-up display device that the information presented to the driver will be changed so that a short period of perception will be sufficient to recognize the information and treat it. Advantageously, when the head display device is in the rest position, that is to say in normal driving mode, the driver will perceive the display as a disrupter and his attention will be less diverted by the driver. display. The technical effect presented above results from the fact that, in a variant, the contrast and brightness or sharpness of the display or the size of the information presented are increased. If, however, many or all of the features of the display are changed, it increases the recognition or perception of the display accordingly. In particular, the information presented will be perceived in a very short time by the driver. According to a preferred development of the invention, the direction of gaze of the two eyes of the driver is determined and the display is only modified if it results from this that the direction of gaze of the two eyes is focused on the display of the device. head-up display.
    [0004] For this purpose, the direction of gaze of the two eyes of the driver is preferably determined and the focusing range, in particular the focusing point, is calculated. Then it is checked whether the focusing range, preferably the focus point of the two eyes of the driver, coincides with the display of the head-up display device. The focus according to the invention is the point of intersection of the lines representing the direction of gaze of the two eyes of the driver; if these two lines do not intersect one will take the smallest distance between the two lines. The focusing range according to the invention is that in which the focusing point is located. Preferably, the range of calibration surrounds the maximum focusing point by 5 cm and preferably constitutes a spherical zone whose center is the focusing point and the radius is at most equal to 5 cm. . When determining the direction of gaze of both eyes and calculating the focus on the display of the head-up display device, the display will be modified only if the driver looks at it. In the case where the gaze passes through the display of the head-up display device, this will not cause a change in the display of the head-up display device. According to a preferred development of the invention, the head-up display device is cut off if at least one sensor, preferably a single sensor, equipping the vehicle detects a dangerous or threatening driving situation. The driver's attention will then be advantageously warned of this risky traffic situation, even if he looks at the display of the head-up display device. As a variant of this preferred development of the invention, it is also possible to put the display of the head-up display device at rest if a dangerous traffic situation threatens and if the direction of view of at least one The driver's eye is oriented towards the display of the head-up display device, thereby directing the driver's attention to the dangerous traffic situation. The invention also relates to a vehicle display device, especially a motor vehicle, comprising a head-up display device and a control device which determines the direction of the gaze of at least one eye of the driver and approves the process as defined above. This apparatus offers the same advantages as the method described. The invention also relates to a vehicle, in particular a motor vehicle equipped with such a display device.
    [0005] The present invention will be described below, in more detail with the aid of an exemplary method and head-up display device shown schematically in the single appended figure which is a side view in longitudinal section of FIG. part of the vehicle. The single figure shows a vehicle 1 equipped with a head-up display device 2 integrated in the dashboard 6 of the vehicle 1. The image generator 3 of the head-up display device 2 emits light rays by a The windshield 4 reflects the light forming the image of a light beam, not shown, in the direction of the eyes of the driver 15. The head display device 2a, 2b on the windshield 4. high 2 forms the image of the information presented on the windshield 4 so that the driver 15 can perceive the display 11 of the head-up display device 2. The display 11 is in alignment with the sitting position of the 15, the steering wheel 8 and the combined instruments 7 so that the display 11 of the head-up display device 2 is substantially in the viewing direction of the driver 15, in a straight line beyond the windshield 4. There is also provided a data input device 12 which comprises in particular a camera, a sensor or a video camera or a similar means and also a unit emitting an infrared beam. These means are installed above the driver 15 in the vehicle 1. The recognition device 12 is positioned to detect the direction of gaze of at least one eye of the driver 15, preferably in the direction of the gaze of the two eyes of the driver 15 to determine this or these directions. The recognition device 12 is preferably placed under the eyes of the driver, so that the iris and the pupil are not covered by the eyelid. The recognition device 12 is preferably integrated in the dashboard. Alternatively, and as shown in the figure, the recognition device 12 is integrated in the so-called column, traditionally "column A" of the body. The vehicle also comprises a control apparatus 13 which processes the direction of gaze of at least one eye of the driver, direction provided by the gripping device 12, to check whether this direction of the driver's wheel is facing the direction of the driver. head-up display device 2; it checks in particular if the driver 15 focuses on the display 11 of the head-up display device 2. Preferably, the recognition or acquisition device 12 is integrated in the control device 13. In the case where the direction of the at least one eye is preferably that of the two eyes of the driver 15 is oriented towards the display 11 of the head-up display device 2 (this is indicated by the arrow A) and in particular if the directions are focused , the display 11 is modified (compared with its rest state). This means in particular that it increases the contrast, brightness and / or sharpness of the display and / or the size of the information presented so that this information is better readable. If the direction of view of the driver 15 (as indicated by the arrow B) is not oriented on the display 11 of the head-up display device 2, then the display 11 remains in the rest position, or returns to this position if before the driver was looking in the direction of the display 11 of the head-up display device 2. According to the state of the art there are known methods for capturing the direction of gaze of one or both eyes of the driver . Among other things, the technique of infrared light can be used for this purpose. According to this technique, an infrared light beam, of low intensity emitted by a fixed infrared light emitter, preferably installed on the dashboard of the vehicle 1 is directed towards the eyes of the driver. After prior calibration of the capture or recognition device, a video camera records the image of at least one of the driver's eyes, recording both the pupil (s) and also the point of reflection of the light beam. infrared on the cornea (point of reflection of the cornea). An appropriate program then calculates the direction of gaze from the relative distance between the pupil and the point of reflection of the cornea. The infrared light source is preferably installed very close and in particular at a distance of less than 1 cm from the recognition device 12. Under these conditions, the illumination of the lens will be close to the optical axis as the seizure by the recognition device 12, the pupil grasped in the image provided by the recognition device 12 will be a white circle because the light is reflected by the retina. In a variant and preferably, the infrared light source is installed in a position further from the recognition device, in particular at least 10 to 15 cm from the camera. In particular, the infrared light source is shifted to the side of the camera or the recognition device 12 by being for example installed in the outermost lateral position of the combined instrument of the vehicle 1. The light source The infrared beam then radiates laterally into the eye so that the pupil will appear as a black circle in the image captured by the recognition device. 12.20 NOMENCLATURE OF THE MAIN ELEMENTS 1 Vehicle 2 Head-up display device 2a, 2b Imaging optics 3 Generator images 4 Windscreen 6 Instrument panel 7 Combination instrument 8 Steering wheel 11 Display 12 Recognition device / input device 13 Control unit Driver 15
    权利要求:
    Claims (9)
    [0001]
    CLAIMS 1 °) Management method of a head-up display device (2) of a vehicle (1), in particular of a motor vehicle, the head-up display device (2) displaying at least one information, method consisting of: a) determining the direction of the gaze of at least one eye of the driver (15), b) checking whether the direction of the driver's eye (15) is in the direction of the head-up display device (2), c) altering the display (11) of the head-up display device to improve the readability of the information if the direction of the driver's eye (15) is directed at the display (11); ) of the head-up display device (2).
    [0002]
    Method according to the preceding claim, characterized in that the display (11) is modified by increasing the contrast of the display.
    [0003]
    Method according to Claim 1, characterized in that the display (11) is modified by increasing the brightness of the display.
    [0004]
    4) Level measuring device (1) according to claim 1, characterized in that the display (11) is modified by increasing the sharpness of the display.
    [0005]
    Level measuring device (1) according to claim 1, characterized in that the display (11) is modified by enlarging the display of the information.
    [0006]
    6 °) level measuring device (1) according to claim 1, characterized in that the direction of gaze of the two eyes of the driver (15) is determined and the display (11) is modified only if the direction both eyes, thus obtained, show the focus on the display (11) of the head-up display device (2).
    [0007]
    7) Method according to claim 1, characterized in that the head-up display device (2) is cut off if at least one sensor equipping the vehicle (1) detects a dangerous traffic situation.
    [0008]
    8 °) vehicle display device (1), in particular for a motor vehicle comprising a head-up display device (2) and a control device (13), characterized in that it comprises a device for grasping (12) to determine the direction of gaze of at least one conducting eye (15), the control apparatus (13) implementing the method according to any of claims 1 to 7, comprising: a) determining the viewing direction of at least one eye of the driver (15), b) checking whether the direction of the driver's eye (15) is in the direction of the head-up display device (2), c ) modifying the display (11) of the head-up display device to improve the readability of the information if the direction of the driver's eye (15) is directed on the display (11) of the head display device high (2).
    [0009]
    9 °) Vehicle (1), especially a motor vehicle equipped with a display device according to claim 8.30
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    法律状态:
    2016-10-14| PLSC| Search report ready|Effective date: 20161014 |
    2016-12-21| PLFP| Fee payment|Year of fee payment: 2 |
    优先权:
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