EP4281348A1 - Procédé de détermination d'un niveau de distraction d'un conducteur de véhicule - Google Patents
Procédé de détermination d'un niveau de distraction d'un conducteur de véhiculeInfo
- Publication number
- EP4281348A1 EP4281348A1 EP22700592.3A EP22700592A EP4281348A1 EP 4281348 A1 EP4281348 A1 EP 4281348A1 EP 22700592 A EP22700592 A EP 22700592A EP 4281348 A1 EP4281348 A1 EP 4281348A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- driver
- counter
- level
- vehicle
- characteristic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/08—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to drivers or passengers
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/59—Context or environment of the image inside of a vehicle, e.g. relating to seat occupancy, driver state or inner lighting conditions
- G06V20/597—Recognising the driver's state or behaviour, e.g. attention or drowsiness
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/18—Eye characteristics, e.g. of the iris
- G06V40/193—Preprocessing; Feature extraction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/08—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to drivers or passengers
- B60W2040/0818—Inactivity or incapacity of driver
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/229—Attention level, e.g. attentive to driving, reading or sleeping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2552/00—Input parameters relating to infrastructure
- B60W2552/05—Type of road, e.g. motorways, local streets, paved or unpaved roads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2554/00—Input parameters relating to objects
- B60W2554/40—Dynamic objects, e.g. animals, windblown objects
- B60W2554/406—Traffic density
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2555/00—Input parameters relating to exterior conditions, not covered by groups B60W2552/00, B60W2554/00
- B60W2555/20—Ambient conditions, e.g. wind or rain
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/25—Determination of region of interest [ROI] or a volume of interest [VOI]
Definitions
- the present invention generally relates to vehicle driving aids.
- the invention finds a particularly advantageous application in motor vehicles suitable for driving on the road.
- driver distraction is the cause of 8% to 16% of accidents, according to a WHO study dating from 2011. This is the reason why we want to determine whether the driver is distracted or no, in order to issue an alert when the level of distraction exceeds an acceptable threshold.
- a first method consists in determining, each time the driver takes his gaze away from the road, the duration during which he is looking at something other than the road. As soon as this duration exceeds a predetermined threshold, an alert is issued to the driver.
- the present invention proposes a method as defined in the introduction, in which, when the driver's gaze is directed towards an area in which is located equipment of the vehicle, there is provided a step of acquiring a level of eccentricity of said equipment with respect to a fixed reference direction with respect to the vehicle, and in which at least one characteristic of said counter is chosen as a function of this level of eccentricity.
- the invention by proposing to modify the characteristics of the counter according to factors such as this level of eccentricity, makes it possible to alert the driver only when this proves to be useful.
- the invention also has the advantage of being simple to implement and of not requiring a great deal of computing power.
- the invention relates essentially to visual distraction, which corresponds to a distraction due to a diversion of the driver's eyes away from the driving scene.
- the invention therefore does not mainly deal with distraction in the broad sense, covering a state of distraction in which the driver would be little focused on driving but would have his gaze turned towards the driving scene.
- the acquisition step provision is made to determine whether the driver is looking towards one of the equipment items by comparing the zone towards which the driver's gaze is turned with vertical and horizontal components of the level of eccentricity a associated with each device. This involves detecting whether this zone corresponds to that of one of the equipment items by comparing the area towards which the driver's gaze is turned with the vertical and horizontal components of the level of eccentricity a associated with each of these items of equipment.
- the equipment is mobile or stationary.
- the equipment is fixed in the vehicle, the level of eccentricity of the equipment is known or calculated according to a known location of the equipment, the location or the level of eccentricity of said equipment having been recorded beforehand in a memory of the vehicle, depending on the layout of said vehicle;
- the characteristic of said counter is chosen from among a speed of decrementation of the counter after the driver has started to look towards said zone, and/or a delay before decrementing said counter after the driver has started to look towards said zone, and/ or a delay before re-incrementing said counter after the driver has stopped looking towards said zone;
- the vehicle embeds at least a first screen for displaying information related to the driving of the vehicle and at least a second screen for displaying information not related to the driving of the vehicle,
- the delay before decrementing said counter after the driver has begun to look towards said zone is greater if the zone is that of the first screen only if the zone is that of the second screen;
- the level of eccentricity of said equipment is formed by an angle between an average direction of gaze when the driver is observing said equipment and the reference direction (the average direction of gaze when the driver is looking at the road);
- the delay before decrementing said counter is chosen to be greater than half a second if the level of eccentricity is greater than a threshold, for example between 20 and 60 degrees, and equal to 0 seconds otherwise;
- a step for acquiring a brightness level outside the vehicle and at least one characteristic of said counter is a function of said brightness level, said characteristic preferably being the speed of incrementation of said counter and/or the delay before re-incrementing said counter after the driver has stopped looking towards said zone;
- a step for acquiring a level of fatigue and/or a level of experience of the driver and at least one characteristic of said counter is a function of said level of fatigue and/or of the level of experience, said characteristic preferably being the size of said counter and/or the delay before reincrementing said counter after the driver has stopped looking towards said zone.
- FIG. 1 is a schematic view of a motor vehicle equipped with means for implementing the invention
- FIG. 2 is a graph illustrating a first example of variation of a counter according to the invention as a function of time
- FIG. 3 is a graph illustrating a second example of variation of the counter as a function of time
- FIG. 4 is a diagram illustrating zones in which the gaze of the driver of the vehicle of FIG. 1 can be directed.
- the invention relates generally to the driving of a vehicle by a driver, and more specifically to a way of determining whether the driver is visually distracted or not.
- Visual distraction will be defined here as a diversion of the driver's visual attention by an element or an event, which may be unrelated to the driving activity, and which is done to the detriment of the latter. .
- the “distraction level” is then an indicator making it possible to assess at any time whether or not the driver's gaze is distracted from the driving activity.
- Figure 1 there is shown a vehicle 10 adapted to implement a method for determining this level of distraction.
- this vehicle 10 conventionally comprises a passenger compartment in which there is in particular a seat for the driver 20 of the vehicle, a dashboard and a steering wheel.
- this reference direction D10 is considered parallel to the longitudinal axis of the vehicle 10, and facing the front of the vehicle.
- This equipment is here defined as an element making it possible to provide visual information to the driver. It is preferably an item of equipment useful for driving the vehicle or useful for controlling functionalities offered by the vehicle (controlling the volume of the radio, controlling the temperature, etc.).
- the dashboard is equipped with three items of equipment, namely three separate screens.
- a first screen hereinafter called the multimedia screen, is located in the center of this dashboard. It is used to display information which is not linked, for at least some of it, to the driving process. This is, for example, information relating to air conditioning, the radio, etc. We will consider here that this multimedia screen is touch-sensitive.
- a second screen hereinafter called the instrument screen, is located behind the steering wheel. It is used to display information that is linked, for at least some of it, to the driving process (vehicle speed, fuel level, etc.).
- a third screen is located behind the steering wheel, above the instrumentation screen, at the windshield level. This screen is here transparent so that the driver can see the road through it.
- each of these screens is located in a particular area of the passenger compartment. The same goes for the two exterior rear-view mirrors of the vehicle and for the interior rear-view mirror, which form three other pieces of equipment within the meaning of the present invention.
- zone C3 corresponds to the zone inside which the interior mirror is located.
- Zone C4 corresponds to the zone inside which the head-up display screen is located.
- Zone C5 corresponds to the zone inside which the instrumentation screen is located.
- the zone C6 corresponds to the zone inside which the multimedia screen is located.
- the center of the graph (coordinates 0°, 0°) corresponds to the reference direction D10.
- the abscissa axis represents the horizontal difference between the direction D20 in which the driver 20 can look and the reference direction D10, in degrees.
- the ordinate axis represents the vertical difference between the direction D20 and the reference direction D10, also in degrees.
- the level of eccentricity is considered equal to the aforementioned angle a. It will therefore be referred to below as “eccentricity level a”.
- the zone within which each item of equipment of the vehicle is located can be associated with a level of eccentricity experienced, which depends on the layout of the vehicle.
- this level of eccentricity a is defined by its two horizontal components Ohor and vertical a ve rt.
- zone C4 of the head-up display screen is here defined by a level of eccentricity a having a zero horizontal component Ohor and a vertical component a green equal to - 10 degrees.
- the zone C3 of the interior rear view mirror is here defined by a level of eccentricity a having a horizontal component Ohor equal to 20 degrees and a vertical component a green equal to 20 degrees.
- the vehicle 10 also comprises a computer 11 which comprises a processor, a memory and various input and output interfaces.
- the computer 11 is suitable for receiving various "input data", which come from sensors or third-party electronic devices. It is thus adapted to receive:
- an ambient light level outside the vehicle 10 which is for example obtained by a sensor 13 located behind the windshield (as a variant, one could based on the on or off state of the vehicle's lights),
- a level of road traffic for example selected from the set “fluid”, “dense” and “traffic"
- a navigation system fitted to the vehicle obtained for example thanks to a navigation system fitted to the vehicle (as a variant, it could be based solely on the information measured by the vehicle, such as the distance between the vehicle and the one in front)
- a meteorological parameter (indicating for example the presence or absence of snow and/or rain and/or fog), obtained by a wireless communication means fitted to the vehicle 10 or thanks to measurement means fitted to the vehicle ,
- a level of fatigue of the driver measured for example by means of a sensor 14 detecting the durations and frequencies of closure of the eyelids of the driver 20,
- the duration before collision that is to say the time necessary to come to strike the car which precedes the vehicle 10
- a sensor for example RADAR or camera
- input data may transit over a CAN network of the vehicle and be read by the computer 11 .
- the computer 11 is suitable for controlling a man-machine interface in order to provide the driver with information.
- This interface comprises for example one of the three aforementioned screens and/or speakers located in the passenger compartment of the vehicle and/or a haptic interface (for example a means of vibration located in the driver's seat or in the steering wheel).
- the computer memorizes a computer application, consisting of computer programs comprising instructions whose execution by the processor allows the implementation by the computer of the method described below.
- the computer 11 is thus programmed to determine the instantaneous visual distraction level of the driver by acquiring the aforementioned input data, by setting a counter designed to evaluate this level of distraction, then by calculating the instantaneous value of this counter.
- the parameter setting is carried out according to the values of at least part of the input data obtained (namely according to at least the zone towards which the driver is looking).
- the calculation itself consists in incrementing or decrementing or keeping the counter constant.
- the calculation is thus based on a function which is defined for each zone watched (this function therefore varies from one zone to another) and which will algebraically vary the value of the counter.
- the curve A2 in FIG. 2 illustrates an example of variation in the value of the counter. As shown in this figure, the counter varies continuously.
- This counter is here a time counter, that is to say a kind of hourglass which empties when the driver seems distracted and which can be turned around when he is attentive.
- This counter has a minimum limit Bmin, shown here in FIG. 2 as being equal to zero. It also comprises here a maximum limit which defines the size of the counter. This maximum limit Bmax is between 1 and 10 seconds, and preferably between 1.5 and 7 seconds. It is represented here in FIG. 2 as being equal to 2 seconds.
- the driver looks away from the road as soon as he looks in the direction of one of the zones predefined (that is to say in the direction of one of the areas where a vehicle equipment is located).
- the predefined zones depend on the layout of the vehicle, that is to say on the positioning of the fixed equipment in the passenger compartment of the vehicle.
- the driver looks away from the road as soon as the level of eccentricity a (or at least one of its components) of the zone towards which he is looking exceeds a predetermined threshold.
- a predetermined threshold for the horizontal component Ohor (preferably between 5 and 40 degrees, here chosen equal to 10 degrees) and a second threshold for the vertical component a green (preferably between 3 and 10 degrees , here chosen equal to 5 degrees) beyond each of which it will be considered that the driver looks away from the road.
- the values of the first threshold and of the second threshold can be identical or different.
- the driver diverts his gaze from the road as soon as he looks in a zone distinct from a predefined zone (illustrated for example by the curve C2 of figure 4).
- the zones are not predefined according to the layout of the fixed equipment of the vehicle.
- the front passenger compartment of the vehicle is for example divided into a plurality of zones characterized by their geographical position relative to the driver's head: left, center, right, top, bottom.
- a cell phone resting on the driver's lap is located in a lower center area relative to the driver's head.
- the location of a mobile device in the vehicle is for example determined using a camera or according to the transmission of a signal from said mobile device.
- the level of eccentricity (a) of the mobile equipment is determined for example from an acquisition of the direction of the gaze of the driver by a sensor such as a camera or in a less precise way according to the geographical position of the area in which the mobile equipment is located relative to the area in which is located the driver's head.
- D2 detour time when the driver takes his eyes off the road, for a slightly longer period (called “D2 detour time”).
- the parameters Vi and VD respectively form increment and decrement speeds of the counter.
- incrementations and decrementations may follow non-affine A3 curves, for example polynomial curves of order greater than or equal to two.
- the parameters referenced Bmin, Bmax, Vi, VD, D1 and D2 are those which, in the example represented, make it possible to influence the variations of the counter in order to best assess the level of driver distraction. Otherwise formulated, they will make it possible to parameterize the variations of the counter taking into account the input data.
- These parameters here have nominal values which, according to the invention, may be adjusted as a function of the input data in order to best assess the driver's level of distraction.
- these nominal values are:
- V D -1
- the input data can be classified into three large families (or "categories").
- the first family comprises the input data relating to the driver himself (age, experience, fatigue, wearing glasses with progressive lenses).
- the second family here comprises a single input datum which relates to the vehicle and its fittings (namely the eccentricity).
- the third family includes the input data relating to the environment of the vehicle (brightness, type of road, traffic, weather).
- the age of the driver and/or the fact that he wears a pair of glasses with progressive lenses is therefore a first input datum thanks to which the computer 11 will be able to configure the counter. More precisely, this input data will make it possible to configure a modeling function which will then be used in the calculation of the counter value.
- the first case is that in which the age of the driver is below a predetermined threshold (for example 50 years) and in which the driver does not wear glasses with progressive lenses.
- a predetermined threshold for example 50 years
- the nominal values of the parameters of the meter are considered.
- the preliminary value VD, age of the decrementation speed VD is chosen to be less than -1 (preferably between -1.2 and -1.8).
- this preliminary value VD, age is chosen equal to -1.2. This value makes it possible to decrease the counter more quickly in order to take into account the fact that the eyes of an elderly person or of a person wearing glasses with progressive lenses will take longer to adjust to go from distance vision to near and vis-versa vision.
- the decrementation of the counter could be configured by means of a function polynomial of order greater than or equal to two (illustrated by curve A3).
- the prior value D1 age of the detour delay D1 can be chosen strictly higher to 0.1 s (for example between 0.12 and 0.18 s).
- this prior value D1 age is chosen equal to 0.15s.
- This value could alternatively be not fixed, but a function of the age of the driver (or of the addition of the progressive lenses).
- the idea here again is to take into account the fact that the accommodation of a person's eyes young is faster than that of the eyes of an elderly person or wearer of progressive lenses and/or the fact that cognitive functions may deteriorate with age, an elderly driver taking longer, after a diversion of the gaze, to regain his bearings on the road.
- the driver's state of fatigue is a second input datum, thanks to which the computer 11 will be able to configure the counter.
- this input data will also make it possible to configure a modeling function which will then be used in calculating the value of the counter.
- two cases can be considered.
- the size of the counter is reduced, for example by giving a preliminary value Bmin, non-zero fatigue at its minimum limit Bmin.
- This value may be a function of the driver's level of fatigue.
- this preliminary value Bmin, fatigue is chosen equal to 0.2 s.
- two cases can be considered.
- the prior value D1 exp of the detour delay D1 can be chosen greater than 0.1 second. This value is then preferably between 0.11 and 0.15s. Here, it is fixed at 0.12s. Alternatively, it could be adjusted based on experience.
- the eccentricity level a (or its two components Ohor and a green) is a fourth input datum, thanks to which the computer 11 will parameterize the counter.
- the first case is when the driver looks away from the road to look at one of the items of equipment, in a direction D20 separated by less than 40 degrees from the reference direction D10. In this case, the nominal values of the parameters are considered.
- the prior value D1 a of the decrementation speed VD can be chosen to be strictly less than -1.
- the prior value D2 a of the detour delay D2 can be chosen equal to 0 s while the prior value D1 a of the return delay D1 can be chosen strictly greater than 0.1 s.
- these preliminary values D1 a , VD « can be selected according to the value of the eccentricity coefficient a.
- the first particular case is then that in which the driver looks at the head-up display screen (area C4 in FIG. 4). We can then consider that his attention drops little when he looks in this direction.
- the computer selects a preliminary value VDHUD of the decrementation speed VD strictly greater than -1, so as to slow down the decrease in the counter.
- a polynomial function could be employed for this same purpose (as explained above with reference to Figure 3).
- the computer selects a prior value D2HUD of the detour delay D2 which is strictly greater than 0.5s and which is for example equal to 0.7 seconds.
- the second particular case is that in which the driver looks at the zone of the instrumentation screen or that of a rear-view mirror.
- the computer selects a prior value D2 eC ran of the detour delay D2 which is strictly greater than 0, 2s and which is for example equal to 0.5 seconds.
- the third particular case is that in which the driver looks at the area of the multimedia screen.
- the computer selects a prior value D2 eC ran of the delay of detour D2 which is strictly less than 0.2s and which is for example equal to 0 seconds.
- the level of exterior luminosity is a fifth input datum, thanks to which the computer 11 will configure the counter.
- the computer 11 To use this input data in the setting of the counter, the computer 11 considers two cases.
- the nominal values of the parameters of the counter are considered. Otherwise, and in particular if the level of luminosity is lower than a predetermined threshold (which corresponds to nocturnal or foggy conditions), the preliminary value Vojum of the decrementation speed VD is set strictly lower than - 1 (preferably between -1.2 and -2) and the preliminary value Vij um of the incrementation speed Vi is set strictly below 1 (preferably between 0.5 and 0.9). This makes it possible to take into account not only that the driver must adapt to the brightness of the object in the direction of which he is looking away, but also that he must then readapt to the brightness of the road when his gaze returns to that -this.
- the luminosity is such that it triggers the automatic switching on of the vehicle's lights and if the road is lit by streetlamps
- the preliminary value Vojum of the decrementation speed VD is fixed at - 1.2 and the preliminary value Vi um of the incrementation speed is fixed at 0.8.
- the luminosity is such that it triggers the automatic switching on of the vehicle's lights and if the road is not lit by streetlamps, the preliminary value Vojum of the decrementation speed VD is fixed at - 1.5 and the preliminary value j um of the incrementation speed is fixed at 0.7.
- polynomial functions of order greater than or equal to two could be used for the same purpose.
- the return delay D1 can be fixed at a prior value D1 i um strictly greater than 0.1 s, which will be all the greater as the external luminosity is reduced (in the event of low brightness).
- the preliminary value D1 i um can be chosen equal to 0.12s when the brightness is such that it triggers the automatic switching on of the vehicle's lights.
- the type of road on which the vehicle 10 is moving is a sixth input datum, thanks to which the computer 11 can configure the counter.
- the size of the counter is reduced, for example by giving the preliminary value B m ax,ty P e of its maximum limit Bmax a value strictly less than 2 seconds.
- the nominal values of the parameters of the counter can be used.
- the size of the counter is increased, for example by giving the prior value Bmax, type of its maximum limit Bmax, a value strictly greater than 2 seconds.
- the state of the traffic around the vehicle 10 is a seventh input datum, thanks to which the computer 11 can configure the counter.
- the size of the counter may be reduced by the computer 11, for example by giving a prior value B min, non-zero traffic at its minimum limit Bmin and/or by reducing the value of its maximum limit Bmax-
- the advantage of modifying the size of the counter is that an alert will be issued more quickly when the traffic is such that the traffic conditions are dangerous.
- the weather is an eighth input datum, thanks to which the computer 11 can configure the counter.
- two cases may be considered.
- the size of the counter is reduced, for example by giving a prior value Bmin, meteo non-zero at its minimum limit Bmin or by reducing the value of its maximum bound Bmax-
- the advantage of modifying the size of the counter is that an alert will be issued more quickly when the weather is degraded, in order to take into account the fact that driving the vehicle is more dangerous in these conditions.
- the computer will have to combine the preliminary values determined above, so as to configure the counter in the desired way.
- the driver is 61 years old, he wears glasses with progressive lenses, and he drives at night on a road lit by streetlamps, with little traffic.
- the prior value D1 a of the return delay D1 is fixed at 0.12 s and the prior value D2 a of the detour delay D2 is fixed at 0 s.
- the preliminary value VDa of the decrementation speed VD is fixed at -1.15. Then, for the next second, it is fixed at -1.18.
- This value of -1.15 is calculated according to the level of eccentricity a (which is, in this example, equal to 46 degrees) thanks to the equation 1 + (a-40)/40.
- the prior value B max ,meteo of the maximum terminal Bmax is 5 seconds.
- the luminosity is such that the preliminary value Vojum of the decrementation speed VD is chosen equal to -1.2 while the preliminary value Vi,i um of the incrementation speed Vi is fixed equal to 0.8. Furthermore, the prior value D1 ium of the return delay D1 is fixed at 0.12s.
- VD - 1.15.1.2.1.2 during the first half-second
- VD - 1.38.1.2.1.2 for the next second.
- the computer 11 When the value of this counter reaches zero, the computer 11 is programmed to emit an alert signal.
- This alert signal is designed to be adapted to the situation.
- this alert signal may consist of ordering an alert message on one of the screens, in the form of a text or an icon.
- it may consist of transmitting a sound or a voice message.
- it may consist in emitting a vibration in the steering wheel or in the driver's seat.
- the alert signal may have an intensity and/or a length depending on the number of alert signals already emitted previously, for example in the previous hour or since the start of the journey.
- the computer can emit another type of warning signal, at the end of the journey.
- This type of warning signal will inform the driver about his level of attention throughout the journey. This could be a number indicating the number of times the driver was distracted. This number can be compared to the numbers calculated for previous journeys, so that the driver can see any progress.
- the computer can also issue recommendations in the form text or in voice form, for example: "we recommend that you regularly put your eyes back on the road for at least 3s to regain a good awareness of what is happening around you”.
- the parameters of the counter could be a function of the frequency with which the driver's eyes are diverted from the road. Indeed, the faster this frequency, the longer the time needed to allow the driver to properly understand his environment. So, the greater this frequency, the more we can reduce the incrementing and/or decrementing speeds and/or the size of the counter. It is also possible, as a variant or in addition, to extend the detour period D1 and/or reduce the return period D2.
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2100606A FR3119145B1 (fr) | 2021-01-22 | 2021-01-22 | Procédé de détermination d’un niveau de distraction d’un conducteur de véhicule |
| PCT/EP2022/050356 WO2022157026A1 (fr) | 2021-01-22 | 2022-01-10 | Procédé de détermination d'un niveau de distraction d'un conducteur de véhicule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4281348A1 true EP4281348A1 (fr) | 2023-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22700592.3A Pending EP4281348A1 (fr) | 2021-01-22 | 2022-01-10 | Procédé de détermination d'un niveau de distraction d'un conducteur de véhicule |
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| Country | Link |
|---|---|
| US (1) | US20240078821A1 (fr) |
| EP (1) | EP4281348A1 (fr) |
| CN (1) | CN116981608A (fr) |
| FR (1) | FR3119145B1 (fr) |
| WO (1) | WO2022157026A1 (fr) |
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| US20240051545A1 (en) * | 2022-08-15 | 2024-02-15 | Ford Global Technologies, Llc | Vehicle sensing with body coupled communication |
| JP2026508812A (ja) | 2023-01-05 | 2026-03-13 | ザイロン デー.オー.オー. | 運転モニタリングシステムにおける脇見検出方法 |
| US20250381845A1 (en) * | 2024-06-18 | 2025-12-18 | Qualcomm Incorporated | Guidance data for vehicles driving relative to a curve using augmented reality (ar) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090123031A1 (en) * | 2007-11-13 | 2009-05-14 | Smith Matthew R | Awareness detection system and method |
| US9460601B2 (en) * | 2009-09-20 | 2016-10-04 | Tibet MIMAR | Driver distraction and drowsiness warning and sleepiness reduction for accident avoidance |
| WO2013051307A1 (fr) * | 2011-10-06 | 2013-04-11 | 本田技研工業株式会社 | Dispositif d'alarme |
| GB2500690B (en) * | 2012-03-30 | 2015-07-29 | Jaguar Land Rover Ltd | Driver assistance system |
| CN102789693B (zh) * | 2012-08-10 | 2015-09-30 | 深圳市路畅科技股份有限公司 | 一种道路标志牌自动识别方法及车载识别装置 |
| EP2892036B1 (fr) * | 2014-01-06 | 2017-12-06 | Harman International Industries, Incorporated | Corrélation de génération d'alerte entre des données d'imagerie montées sur casque et un dispositif externe |
| FR3033303B1 (fr) * | 2015-03-03 | 2017-02-24 | Renault Sas | Dispositif et procede de prediction d'un niveau de vigilance chez un conducteur d'un vehicule automobile. |
| US10279192B2 (en) * | 2016-11-17 | 2019-05-07 | Cognito Therapeutics, Inc. | Methods and systems for neural stimulation via visual stimulation |
| JP6915503B2 (ja) * | 2017-11-09 | 2021-08-04 | トヨタ自動車株式会社 | ドライバモニタシステム |
| JP2019091267A (ja) * | 2017-11-15 | 2019-06-13 | オムロン株式会社 | 脇見判定装置、脇見判定方法、およびプログラム |
| CN110969060A (zh) * | 2018-09-29 | 2020-04-07 | 北京市商汤科技开发有限公司 | 神经网络训练、视线追踪方法和装置及电子设备 |
| CN111079476B (zh) * | 2018-10-19 | 2024-03-26 | 上海商汤智能科技有限公司 | 驾驶状态分析方法和装置、驾驶员监控系统、车辆 |
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2021
- 2021-01-22 FR FR2100606A patent/FR3119145B1/fr active Active
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2022
- 2022-01-10 EP EP22700592.3A patent/EP4281348A1/fr active Pending
- 2022-01-10 US US18/262,517 patent/US20240078821A1/en active Pending
- 2022-01-10 WO PCT/EP2022/050356 patent/WO2022157026A1/fr not_active Ceased
- 2022-01-10 CN CN202280015664.8A patent/CN116981608A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3119145B1 (fr) | 2023-10-27 |
| CN116981608A (zh) | 2023-10-31 |
| WO2022157026A1 (fr) | 2022-07-28 |
| FR3119145A1 (fr) | 2022-07-29 |
| US20240078821A1 (en) | 2024-03-07 |
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