• 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 monitoring the driver of a motor vehicle comprising the following steps: a) estimation of a state of vigilance of said driver and, b) transmission of at least one alarm signal intended to inform the driver on its state of alertness, according to the state of vigilance estimated of the driver, this method further comprising the following steps of personalization of the following alarm: - choice by the driver of said at least one alarm signal adapted to be issued in step b) from among a predetermined set of alarm signals, - recording of each selected alarm signal, in correspondence with a driver identifier in a personalized database. The invention also relates to the associated device.
    公开号:FR3048544A1
    申请号:FR1651689
    申请日:2016-03-01
    公开日:2017-09-08
    发明作者:Valerie Lancelle
    申请人:Valeo Comfort and Driving Assistance SAS；
    IPC主号:
    专利说明:

    Technical field to which the invention relates
    The present invention relates generally to the field of monitoring the driver of a motor vehicle.
    It relates more particularly to a device and a method of monitoring this driver.
    Technological background
    It is known to monitor the driver of a motor vehicle to detect a possible decline in alertness (that is to say, a decline in his ability to drive) that can lead to insufficient control of the vehicle.
    For example, this decline in fitness may result from drowsiness and / or driver distraction. For this purpose, a driver monitoring parameter is measured and interpreted by a control unit to derive information on the state of vigilance of the driver. If necessary, an alarm signal is issued to inform the driver of his state of alertness.
    However, these alarm signals are generally considered intrusive and inconvenient by the driver. It has often been found that the driver ignores the alarm signals emitted by the monitoring device, or in most cases quickly deactivates the monitoring device.
    Under these conditions, the existing monitoring devices are of limited value and do not significantly contribute to the improvement of automobile safety.
    Object of the invention
    In order to overcome the aforementioned drawback of the state of the art, the present invention proposes a monitoring method and a device allowing the driver to customize the transmission of the alarm signal or signals when a decrease in the driver's vigilance, namely a reduction in the level of alertness and / or the level of attention of the driver.
    More particularly, the invention proposes a method for monitoring the driver of a motor vehicle comprising the following steps: a) estimating a state of alertness of said driver and, b) transmitting at least one alarm signal intended to inform the driver of his state of alertness, according to the estimated state of alertness of said driver, and further comprising the following prior stages of personalization of the following alarm signal: - choice by the driver of said at least one signal d alarm adapted to be emitted in step b), from a predetermined set of alarm signals, - recording each alarm signal chosen in correspondence with a driver identifier in a personalized database.
    The driver monitoring method of the invention advantageously allows the selection by the driver of the preferred alarm signal (s) and the constitution of a conductive plug in relation to an identifier of the driver.
    The driver monitoring method and the device according to the invention, personalized by the driver himself, are better accepted and can thus fulfill their role in terms of safety. Other non-limiting and advantageous features of the process according to the invention, taken individually or in any technically possible combination, are as follows: in the choice step, the driver chooses each alarm signal from among one or more visual, sound, haptic, or any of their combinations; in the selection step, the driver furthermore chooses to carry out a predefined number of repetitions of the transmission of said alarm signal as well as possibly a delay between two repetitions of this alarm signal and, at the same time, the recording step, the number of repetitions and the delay between two repetitions are recorded in said personalized database, in correspondence with the identifier of the driver; said estimated state of alertness belonging to a predetermined set of possible states of alertness, at the choice stage the driver associates each selected alarm signal with one of said possible states of alertness of the driver, and, at the recording step the selected alarm signal is recorded in correspondence with the possible state of alertness associated; - the state of alertness estimate includes the estimation of a state of drowsiness or distraction; in step a) the driver's state of drowsiness can be judged as alert awake, hypovigilance or sleepiness, and the driver's state of distraction can be judged as concentrated, poorly distracted or highly distracted, and step b), said alarm signal is emitted when the state of somnolence of the driver indicates that it is under hypovigilance, or falling asleep or when the state of distraction of the driver indicates that it is weakly or highly distracted; in the choice step, the driver associates the selected alarm signal with each state of distraction or somnolence possible, and in the recording step, said selected alarm signal is recorded in the personalized database in correspondence with the state of distraction or possible somnolence associated; the identifier of the driver of the vehicle is automatically determined and, in step b), the alarm signal recorded in the personalized database is sent in correspondence with this identifier and corresponding to the state of vigilance of the estimated driver in step b); the identifier of the driver of the vehicle is automatically determined, the personalized database associated with this identifier is retrieved and the driver is invited to modify, if necessary, each alarm signal chosen for the journey in progress; - Prior to the selection step, the driver performs a test of each alarm signal; and, - a preliminary step of testing the effectiveness of each alarm signal adapted to be transmitted to inform the driver of his state of alertness is achieved. The invention also relates to a device for monitoring the driver of a motor vehicle comprising: a device for estimating a state of vigilance of the driver, a device for transmitting an alarm signal intended to inform the driver about its state of alertness, according to the estimated state of vigilance of the driver, - a dialogue interface with the driver allowing him to choose one or more alarm signals adapted to be transmitted by the transmission device, among a predetermined set of alarm signals. a personalized database, in which each selected alarm signal is recorded in correspondence with a driver identifier.
    Detailed description of an example of realization
    The following description with reference to the accompanying drawings, given as non-limiting examples, will make it clear what the invention consists of and how it can be achieved.
    In the accompanying drawings: - Figure 1 shows schematically the different steps of the monitoring method according to the invention; - Figure 2 shows schematically the various elements of the monitoring device according to the invention.
    Device
    FIG. 2 diagrammatically shows the various elements of a monitoring device according to the invention.
    The monitoring device 500 according to the invention comprises: a device 300 capable of estimating a state of alertness of the driver, a device for transmitting an alarm signal 400 as a function of the estimated state of vigilance of the driver and intended to to inform the driver of his state of alertness, - a dialogue interface 100 with the driver allowing the latter to choose one or more alarm signals adapted to be transmitted by the transmission device, from among a predetermined set of signaling signals; alarm, and a personalized database 200 in which each selected alarm signal is recorded in correspondence with a driver identifier.
    The device 300 able to estimate the state of alertness of the driver advantageously identifies different states of alertness in the driver.
    The device capable of estimating the state of vigilance of the driver can estimate at least two states of alertness, including at least a satisfactory state of alertness and an unsatisfactory state of alertness.
    Preferably, the device capable of estimating the state of vigilance of the driver estimates a state of alertness belonging to a predetermined set of possible states of alertness.
    Advantageously, the device 300 capable of estimating the driver's state of alertness comprises a device for measuring a driver's monitoring parameter and a control unit which receives information from this measurement device and which is programmed to estimate in function information received the state of vigilance of the driver.
    Preferably, the measuring device records information on the driver without interacting with it, therefore without disturbing it. In particular, the measuring device emits no signal towards the driver. This has the advantage of allowing the measuring device to record the natural behavior of the driver, in the absence of any disturbance or constraint by the measuring device.
    The device for measuring the driver monitoring parameter is then without interaction with the driver.
    As a variant, it is possible to envisage a measuring device in interaction with the driver, which emits for example a signal intended for the driver and detects the response thereof.
    In the embodiment described here, the measuring device comprises at least one image capture device of the driver's head.
    This image capture device comprises for example a camera arranged facing the driver, for example at the dashboard of the vehicle, near the speed meters and / or laps of the vehicle.
    Alternatively, it may include any image capture device positioned so that the driver's face, in its driving position, enters the field of this image capture device.
    For example, said monitoring parameter measured by the measuring device is relative to the direction of gaze of the driver and / or the movements of the eyes and / or the fixation of the gaze and / or the laying of the driver's head, and / or closing the driver's eyelids, and / or contraction of the muscles of the driver's face, and / or movements of the driver's lips.
    This measured conductor monitoring parameter is determined according to at least one image of the driver's head captured by the measuring device.
    This parameter can also be determined from two or more images of the driver's head.
    It can then also include statistical information on a set of measured data on a plurality of image capture of the driver's head.
    In particular, when the driver monitoring parameter is relative to the direction of the gaze of the driver, the image capture device may include any device for monitoring the direction of gaze known to those skilled in the art. The monitoring parameter relating to the direction of the gaze of the driver may in particular be the direction of gaze in a repository related to the image capture device or in a repository related to the driver's head, or the position of the driver's pupils in a such reference. It may include a duration and / or a frequency of diversion of the driver's view of the road.
    It may also include a duration of fixing the same point, that is to say the duration during which the gaze direction is constant, a frequency of the moments of attachment of the same point, a frequency and a duration of jerks of the eyes, that is to say movements of the eyes between two moments of fixation of the same point.
    The monitoring parameter may also comprise statistical information on a set of viewing directions measured from a plurality of image captures made during a predetermined duration, for example an average direction of view, a standard deviation at this mean direction , a description of the statistical distribution of gaze directions.
    The driver monitoring parameter relating to the laying of the head may include a position and orientation of the driver's head in the repository related to the image capture device. It may also comprise, for example, statistical information on a set of poses measured from a plurality of image captures made during a predetermined duration, a frequency spectrum of the movements of the head, or an average position of the head in a given time interval.
    The driver monitoring parameter for closing the driver's eyelids may include an eye blink frequency, an eyelid closing time, an eyelid closing speed, an eye blink duration, a classification of the different types of eyelids. closures of the eyes, or statistical information on the frequency or duration of closure of the eyelids of the driver of average type or standard deviation.
    The monitoring parameter for facial muscle contraction typically includes a frequency of contraction of the facial muscles, or statistical information of the average type or statistical distribution of the contraction frequency of the facial muscles. This contraction of the muscles of the face indicates for example a yawn.
    The measuring device may also include two image capture devices allowing the reconstruction of an image of the driver's head in three dimensions, by stereoscopy.
    As a variant, the measurement device may comprise other types of sensors making it possible to measure other types of monitoring parameter, in addition to at least one of the monitoring parameters already mentioned, or in replacement of this monitoring parameter.
    For example, the measuring device may comprise a sensor adapted to measure the pressure of the hands on the steering wheel of the vehicle.
    The measuring device may comprise, for example, a sound sensor capable of measuring the sound volume in the passenger compartment of the vehicle.
    The measuring device may also comprise, for example, one or more biometric sensors making it possible, for example, to measure the heart rate and / or the respiratory rate and / or the frequency and / or the amplitude of a variation in the pupil's pupil size. and / or the body temperature of the driver, and / or the blood glucose of the driver and / or the brain activity of the driver. The control unit of the device 300 able to estimate the state of alertness of the driver is programmed to estimate a state of vigilance of the driver according to an estimation rule and according to the measured value of said monitoring parameter.
    The estimation rule is implemented by an estimation module of the control unit.
    As mentioned above, it may be provided according to the invention at least two states of alertness corresponding to the states of vigilance satisfactory or unsatisfactory. For example, when the measured monitoring parameter is relative to the driver's gaze direction, it is possible to consider that the state of vigilance of the driver is unsatisfactory when the direction of gaze of the driver is directed outside the driver. route for more than 2 seconds, or because the driver's eyelids are closed for more than 500 milliseconds.
    More precisely, in the first case, it is the level of attention of the driver which is insufficient, while in the second case it is the level of awakening of the driver.
    Advantageously, the device for estimating the state of vigilance of the driver is able to estimate the state of vigilance of the driver among a predetermined set of possible states of alertness.
    Thus, the device for assessing the state of vigilance of the driver can estimate the state of alertness more accurately according to a state of distraction and / or drowsiness.
    The estimation rule preferably includes at the output several states of possible distraction and / or somnolence of the driver, corresponding to different states of alertness of the possible driver.
    The following states of alertness can be used to estimate the driver's state of distraction: concentrated, poorly distracted, highly distracted. The "concentrated" state of distraction of the driver corresponds to a satisfactory state of alertness to drive.
    On the contrary, the states of distraction "poorly distracted" and "highly distracted" of the driver correspond to an unsatisfactory state of alertness to drive.
    Such a situation typically occurs when the driver turns his eyes away from the road to, for example, consult his phone or look inside the passenger compartment of the vehicle.
    This situation corresponds to a visual distraction of the driver.
    The measured monitoring parameter is here for example a parameter relating to the direction of the driver's gaze.
    The driver can also divert his attention from driving due to a sound distraction. Such a situation typically occurs when excessive noise is present in the passenger compartment of the vehicle, for example due to a telephone ringing, music broadcasting or due to a heated discussion.
    The driver may also divert his attention from driving due to cognitive distraction. Such a situation typically occurs when the driver is absorbed in a discussion, on the phone for example, or by his own thoughts.
    These last two situations can for example be detected by measuring a monitoring parameter relating to the movements of the eyes and / or fixing the gaze.
    It is furthermore possible to determine whether the driver's distraction is visual, sound or cognitive in nature.
    The processing of the images recorded by the measuring device can give indications on the nature of the distraction. It is also possible to use, for example, in addition to the image capture device of the measuring device, a sound sensor placed in the passenger compartment.
    Advantageously, the following states of distraction can be provided: low visual and / or sound and / or cognitive distraction and strong visual and / or auditory and / or cognitive distraction.
    The following states are advantageously provided to estimate the driver's state of drowsiness: alert awakening, hypovigilance and falling asleep. Alert awakening is considered a state of satisfactory vigilance of the driver.
    On the contrary, hypovigilance and falling asleep correspond to an unsatisfactory state of alertness of the driver. Hypovigilance, also called relaxed awakening, corresponds to a lowered level of arousal characterized by specific patterns of brain activity, including the presence of alpha brain waves whose frequency varies from 8 to 12 Hertz (Hz). Body movements are rarer than alert alertness, the reaction time is lengthened. Attention is more labile, so it's harder to focus on a task. Sleeping is an intermediate state between sleep and wakefulness characterized by specific patterns of brain activity, including the presence of theta brain waves with a frequency range of 3.5 to 7.5 Hz, eye movements slow and a reduction in muscle tone. The presence of yawning can be detected. If the driver struggles with falling asleep. microsomes can be observed.
    According to a first simplified embodiment, said estimation rule comprises a comparison between the measured value of the driver monitoring parameter and a threshold value of this monitoring parameter.
    For example, when the driver monitoring parameter is a driver's eyelid closing frequency or duration, the first estimation rule may include comparing the measured value of frequency or duration with a threshold value of frequency or duration. duration. When the measured value of frequency or duration is greater than the threshold value of frequency or duration, the first estimation rule returns at the output an unsatisfactory state of vigilance of the driver, for example indicating that it is hypovigilant, poorly distracted , very distracted, even falling asleep. For example, a state of low distraction may for example be determined when the driver turns his eyes away from the road for a period of time ranging from 1.6 to 2 seconds; and a state of high distraction may for example be determined when the driver turns his eyes away from the road for a period of time strictly greater than 2 seconds.
    According to a second preferred embodiment, said estimation rule is determined by a learning algorithm adapted to establish a causal structure between the monitoring parameter and the state of vigilance of the driver. This learning algorithm is initially driven using a predetermined initial database comprising input variable pairs comprising a predetermined associated monitoring parameter and vigilance state.
    This initial database includes data relating to different drivers, so that the initial performance of the estimation rule is satisfactory for a majority of drivers.
    The initial database is distinct from the custom database 200 by the user. The learning algorithm determines for example, on the basis of this initial database, the probability of observing a state of alertness, and preferably the state of distraction or somnolence given to the driver, knowing that the parameter monitor has said measured value.
    The estimation rule returns, on the basis of the learning algorithm, the state of alertness, and in particular the state of sleepiness or distraction that is most likely as a function of the measured value of the monitoring parameter of the driver.
    Preferably, regardless of the embodiment, a plurality of measured values of the monitoring parameter are measured and the state of vigilance of the driver, and in particular the state of sleepiness or distraction, is estimated as a function of this plurality of values. measured values.
    Alternatively, the control unit can further receive data transmitted by other devices of the vehicle, such as GPS data, acceleration / braking, activation of certain functions of the vehicle, such as for example the activation of the wireless connection from a mobile phone to the vehicle.
    Data indicating a course that is not suited to the road can be taken into account in the estimation rule to determine the state of alertness of the driver. These data may include, for example, the lateral deviation of the vehicle from the center of its path, the lateral stability of the vehicle, the frequency and the amplitude of micro-corrections exerted by the driver on the steering wheel. These data can also constitute, alternatively, the measured monitoring parameters of the driver.
    The monitoring device of the invention 500 further comprises a device for transmitting an alarm signal 400 (FIG. 1). The transmission of this alarm signal makes it possible to inform the driver of a state of insufficient vigilance. The driver can then act to improve his state of alertness, for example by taking a break to rest or by interrupting a telephone conversation.
    The alarm signal emitted by the device for emitting the warning signal may be of a visual, sound and / or haptic nature.
    The visual signal may consist of a warning light, a flashing light or a flash of light emitted at the dashboard, the central rearview mirror and / or the front side pillars of the vehicle. The audible warning may be a recorded message or a sound possibly selected from a set of ringtones or a music possibly selected from a set of musical pieces.
    The haptic signal may consist of a vibration in the steering wheel, the seat belt and / or the driver's seat.
    The monitoring device according to the invention also comprises a dialogue interface with the driver allowing the latter to choose one or more alarm signals adapted to be transmitted by the transmission device, from a predetermined set of alarm signals. .
    Finally, the driver monitoring device according to the invention comprises a personalized database relating to the alarm signals; wherein each selected alarm signal is recorded in correspondence with an identifier of the driver.
    For example, the personalized database 200 relating to the alarm signals of the monitoring device according to the invention can allow recovery of conductor plugs, each plug comprising for a given driver, or the alarm signals selected by said driver.
    The personalized database 200 relating to the alarm signals (and in particular the driver cards) can for example be integrated in the control unit defined above.
    The driver can identify himself, for example through a dialogue box, as soon as it is installed in the motor vehicle.
    Alternatively, the motor vehicle concerned may advantageously further comprise a driver recognition system.
    This recognition system automatically identifies the driver of the vehicle from a list of stored drivers. This recognition system is based, for example, on the facial recognition of the driver on an image of the driver's head, on the processing of biometric information (such as a fingerprint), or on the identification of a key. contact used by the driver.
    This recognition system may, for example, transmit the identifier of the driver to the control unit, which is then programmed to select the information of the personalized database 200 relating to the alarm signals in relation to this driver identifier. . For example, the control unit can be programmed to select the conductive plug corresponding to the identifier transmitted by the recognition system. Method
    FIG. 1 diagrammatically shows the steps of the monitoring method according to the invention.
    The driver drives the vehicle as usual, without any particular constraints.
    The monitoring method according to the invention is implemented during the driving of the vehicle by the driver. This method comprises the following steps: a) estimation of the vigilance state of said driver and, b) transmission 40 of at least one alarm signal intended to inform the driver of his state of alertness, according to the the state of alertness of the said driver.
    It also comprises the following prior stages of personalization of the following alarm signal: - selection by the driver of one or more alarm signals adapted to be transmitted in step b), from a predetermined set of signals alarm, - record 20 of each selected alarm signal, in correspondence with a driver identifier, in said personalized database 200. The estimated state of vigilance of the driver advantageously belongs to a predetermined set of states of vigilance possible of the driver.
    Preferably, the estimate of the state of alertness includes the estimation of a state of somnolence or a state of distraction in the driver, as defined above.
    Advantageously, in the selection step, the driver associates each selected alarm signal with one of the possible states of alertness of the driver, and in the recording step, the selected alarm signal is recorded in correspondence. with the possible state of alertness associated. The estimate of the vigilance state advantageously comprises a step of measuring at least one driver monitoring parameter, and a step of using at least one measured value of the at least one measured monitoring parameter to estimate a state of alertness of the driver according to said estimation rule and according to the measured value of said monitoring parameter.
    Such measurement steps of the parameter for monitoring and using said measurement of the monitoring parameter are, in a particularly advantageous manner, implemented by the measuring device and the control unit according to the modalities described above.
    Depending on the state of alertness of the driver estimated by the control unit, it controls or not the transmission of an alarm signal to the driver.
    Said alarm signal is emitted when the device for estimating the vigilance state returns an unsatisfactory state of alertness as defined above. Advantageously, an alarm signal is emitted when at least one of the following states of distraction or sleepiness is detected: low distraction (visual and / or sound), strong distraction (visual and / or sound), hypovigilance or sleepiness.
    According to the monitoring method of the invention, the transmission of the alarm signal is personalized by the driver, so that this emitted signal is better accepted by this driver. At least one of the following characteristics of the alarm signal may be personalized by the driver: the nature of the alarm signal, for example, visual, audible, and / or haptic, as defined above; - the intensity and / or the frequency of the alarm signal; the number of possible repetitions of the alarm signal; where appropriate, the delay between two repetitions of said alarm signal. In the recording step, each of these characteristics is preferably recorded in said personalized database 200, in correspondence with the identifier of the bearer. As a variant, one or more of these characteristics are recorded in said personalized database 200 in correspondence with this identifier of the bearer.
    The number of repetitions of the alarm signal is an integer that can be zero.
    Indeed, the alarm signal can for example be repeated once or twice. Under these conditions, the driver can choose to change or not the alarm signal at each repetition.
    For example, he can select a first visual signal and then a sound signal. He can also choose to increase the intensity of the alarm signal at each repetition. When the alarm signal is repeated more than once, the driver can select different delays between each repetition of the alarm signal.
    In the case of a sound or haptic signal, it is possible to provide that the driver also chooses the sound frequency or the frequency of the vibrations emitted by the device for transmitting the alarm signal.
    Preferably, when states of distraction or drowsiness are distinguished, the driver associates a different alarm signal according to the state of drowsiness or distraction detected.
    In particular, it can assign a different alarm signal depending on the state of distraction or drowsiness detected, in particular, depending on whether the low distraction, high distraction, hypovigilance or sleepiness is detected.
    Optionally, different alarm signals can be combined. For example, for certain states of alertness, the driver can choose a combination of several alarm signals to be issued simultaneously.
    Moreover, not all alarm signals can be associated with all states of alertness. More specifically, the association of certain alarm signals with certain states of vigilance may be prohibited.
    For example, the association by the driver of a visual alarm signal in a state of drowsiness corresponding to falling asleep may be excluded. Alternatively, when the driver chooses a visual signal to be issued when a state of drowsiness is detected, the combination with another alarm signal may be imposed.
    The method of the invention may also exclude the possibility of associating an audible alarm signal with a loud (weak or loud) distraction and a visual signal with a visual (weak or strong) distraction.
    It can also be imposed that a haptic alarm signal is associated with any visual or audible alarm signal.
    In addition, certain characteristics of the alarm signals may be provided by default for certain states of alertness, without the driver being able to modify them.
    For example, the intensity of the alarm signal associated with the states of distraction and drowsiness associated with the strong distraction or sleep of the driver can be programmed by default to the maximum. Similarly, for these states of alertness, it can be programmed by default an audible alarm and / or a combination of audible, visual and / or haptic, which is excluded from personalization.
    According to the method of the invention, each selected alarm signal is recorded in a personalized database 200 in correspondence with an identifier of the driver.
    Advantageously, driver cards containing all of the driver's choices concerning the customizable characteristics of the alarm signal or signals are recorded in correspondence with the driver identifier.
    Advantageously in the method of the invention, when the driver is installed in the vehicle, it is either automatically identified by the recognition device as described above when starting the vehicle, or it identifies itself. The personalized database 200, corresponding to the identified driver, is then recovered. Under these conditions, when an unsatisfactory state of alertness is detected, the alarm signal (s) corresponding to the choices of the identified driver are emitted.
    In particular, the method of the invention makes it possible, once the driver is identified: in step a), to estimate the state of vigilance of the driver, preferably belonging to a predetermined set of states of vigilance possible, for example belonging to the states of vigilance as defined above, and, - in step b) of the method of the invention, to emit, if necessary, the alarm signal recorded in the personalized database 200 in correspondence with the identifier of the driver identified and whose associated state of alertness corresponds to the state of vigilance of the driver estimated in step a)
    The monitoring method according to the invention may also comprise a step, when the driver has been identified and the corresponding personalized database 200 retrieved, in which the driver is invited to modify his previous personalization choices of the signal or signals of alarm.
    Such an option is advantageous for example, when the driver has previously chosen one or more audible alarms but is accompanied by a passenger he does not wish to disturb. Thus, an alarm signal of a visual or haptic nature may be preferred and chosen for the journey in progress, so as not to disturb the possible rest of the passenger.
    Advantageously, the method of the invention allows the driver to test the different types of alarm signal, prior to the step of choosing the alarm signal. Since the driver has selected his preferred type of alarm knowingly, the transmission of the alarm signal when an unsatisfactory state of alertness of the driver is detected, is better accepted.
    The driver monitoring method according to the invention may also comprise a step, prior to the choice by the driver of one or more alarm signals adapted to be transmitted in step b), of testing the efficiency of each alarm signal.
    Advantageously, in such an embodiment of the method of the invention, the device for transmitting an alarm signal emits an alarm test signal of a predetermined nature and intensity.
    Such a signal is preferably emitted, in a test phase, when the device for estimating the state of alertness has detected an unsatisfactory state of alertness. Under these conditions, the alarm test signal is judged effective if a satisfactory state of alertness is detected after transmission of said alarm test signal or if the driver decides to stop driving within a predetermined time.
    Thus, preferably, the alarm signal or signals proposed to the driver are pre-tested and preselected for their effectiveness on a set of conductors.
    As a variant, the alarm signal or signals proposed to the driver are pre-tested and preselected for their specific effectiveness on the driver of the vehicle.
    For example, the test of the effectiveness of the alarm signal then advantageously makes it possible to determine an intensity (visual, audible or haptic) threshold of the alarm signal, below which the alarm signal is not effective for inform the driver of his state of alertness. Preferably, this threshold intensity is stored for each type of alarm, preferably in correspondence with the identifier of the driver, so that the driver can choose an intensity lower than this threshold intensity.
    权利要求:
    Claims (12)
    [1" id="c-fr-0001]
    1. A method for monitoring the driver of a motor vehicle comprising the following steps: a) estimation (30) of a vigilance state of said driver and, b) transmission (40) of at least one alarm signal intended for inform the driver on his state of alertness, according to the estimated state of alertness of said driver, this method further comprising the following preliminary stages of personalization of the alarm signal: - choice (10) by the driver of said at least one alarm signal adapted to be emitted in step b), from among a predetermined set of alarm signals, - recording (20) of each alarm signal chosen in correspondence with a driver identifier in a personalized database (200).
    [2" id="c-fr-0002]
    2. A method of monitoring the driver of a motor vehicle according to claim 1, wherein, in the selection step, the driver chooses each alarm signal from one or more signals of a visual, sound, haptic nature, or any of their combinations.
    [3" id="c-fr-0003]
    3. A method of monitoring the driver of a motor vehicle according to one of the preceding claims, wherein, in the choice step, the driver further chooses to perform a predetermined number of repetition of the transmission of said signal d alarm as well as possibly a delay between two repetitions of this alarm signal and, at the recording step, the number of repetitions and the delay between two repetitions are recorded in said personalized database (200), in correspondence with the driver's identifier.
    [4" id="c-fr-0004]
    4. A method for monitoring the driver of a motor vehicle according to one of the preceding claims, wherein said estimated state of alertness belonging to a predetermined set of possible states of alertness, at the stage of choice, the driver associates each alarm signal selected at one of said possible driver vigilance states, and at the recording step, the selected alarm signal is recorded in correspondence with the associated possible vigilance state.
    [5" id="c-fr-0005]
    5. A method of monitoring the driver of a motor vehicle according to one of the preceding claims, wherein the estimate of the state of alertness includes the estimation of a state of drowsiness or distraction.
    [6" id="c-fr-0006]
    6. A method of monitoring the driver of a motor vehicle according to claim 5, wherein in step a) the state of somnolence of the driver can be estimated as alert awake, hypovigilance or sleep, and the state of distraction of driver can be estimated as concentrated, poorly distracted or highly distracted and according to which in step b) said alarm signal is emitted when the state of drowsiness of the driver indicates that it is in hypovigilance or in the process of falling asleep or when the state of distraction of the driver indicates that the driver is weakly or highly distracted.
    [7" id="c-fr-0007]
    7. A method of monitoring the driver of a motor vehicle according to one of claims 5 and 6, wherein, in the selection step, the driver associates the selected alarm signal to each state of distraction or drowsiness possible and at the recording step, said selected alarm signal is recorded in the personalized database (200) in correspondence with the possible distraction or possible drowsiness state.
    [8" id="c-fr-0008]
    8. A method of monitoring the driver of a motor vehicle according to one of the preceding claims, wherein the identifier of the driver of the vehicle is also automatically determined and, in step b), the alarm signal is emitted. recorded in the personalized database (200) in correspondence with this identifier and corresponding to the state of vigilance of the driver estimated in step a).
    [9" id="c-fr-0009]
    9. A method of monitoring the driver of a motor vehicle according to one of the preceding claims, wherein the driver identifier of the vehicle is automatically determined, the personalized database associated with this identifier is retrieved and the driver is invited to change each alarm signal selected for the current trip.
    [10" id="c-fr-0010]
    10. A method of monitoring the driver of a motor vehicle according to one of the preceding claims, wherein, prior to the selection step, the driver performs a test of each alarm signal.
    [11" id="c-fr-0011]
    11. A method for monitoring the driver of a motor vehicle according to one of the preceding claims, wherein a prior step of testing the effectiveness of each alarm signal adapted to be issued to inform the driver on his state of alertness. is realized.
    [12" id="c-fr-0012]
    12. Device for monitoring the driver of a motor vehicle, comprising: a device (300) for estimating a driver's state of alertness; a device (400) for transmitting an alarm signal intended to inform the driver; driver on his state of alertness, according to the estimated state of vigilance of the driver, - a dialogue interface (100) with the driver allowing him to choose one or more alarm signals adapted to be transmitted by the device transmission, among a predetermined set of alarm signals, - a personalized database (200), wherein each selected alarm signal is recorded in correspondence with a driver identifier.
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    同族专利:
    公开号 | 公开日
    US20190122525A1|2019-04-25|
    EP3424031A1|2019-01-09|
    WO2017149047A1|2017-09-08|
    JP2019512780A|2019-05-16|
    FR3048544B1|2021-04-02|
    CN109791722A|2019-05-21|
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    法律状态:
    2017-03-31| PLFP| Fee payment|Year of fee payment: 2 |
    2017-09-08| PLSC| Search report ready|Effective date: 20170908 |
    2018-03-29| PLFP| Fee payment|Year of fee payment: 3 |
    2020-03-31| PLFP| Fee payment|Year of fee payment: 5 |
    2021-03-30| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1651689A|FR3048544B1|2016-03-01|2016-03-01|DEVICE AND METHOD FOR MONITORING A DRIVER OF A MOTOR VEHICLE|FR1651689A| FR3048544B1|2016-03-01|2016-03-01|DEVICE AND METHOD FOR MONITORING A DRIVER OF A MOTOR VEHICLE|
    CN201780025237.7A| CN109791722A|2016-03-01|2017-03-01|For monitoring the device and method of the driver of motor vehicles|
    JP2018546442A| JP2019512780A|2016-03-01|2017-03-01|Device and method for monitoring a driver of a motor vehicle|
    EP17707902.7A| EP3424031A1|2016-03-01|2017-03-01|Device and method for monitoring a driver of an automotive vehicle|
    US16/082,171| US20190122525A1|2016-03-01|2017-03-01|Device and method for monitoring a driver of an automotive vehicle|
    PCT/EP2017/054833| WO2017149047A1|2016-03-01|2017-03-01|Device and method for monitoring a driver of an automotive vehicle|
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