EP3084565A1 - Control device for a motor vehicle and control method - Google Patents

Control device for a motor vehicle and control method

Info

Publication number
EP3084565A1
EP3084565A1 EP14828182.7A EP14828182A EP3084565A1 EP 3084565 A1 EP3084565 A1 EP 3084565A1 EP 14828182 A EP14828182 A EP 14828182A EP 3084565 A1 EP3084565 A1 EP 3084565A1
Authority
EP
European Patent Office
Prior art keywords
touch surface
displacement
acceleration
touch
control device
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.)
Ceased
Application number
EP14828182.7A
Other languages
German (de)
French (fr)
Inventor
Stéphanie DABIC
Jean-Marc Tissot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dav SA
Original Assignee
Dav SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dav SA filed Critical Dav SA
Publication of EP3084565A1 publication Critical patent/EP3084565A1/en
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/10—Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/25—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using haptic output
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/26—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using acoustic output
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03547—Touch pads, in which fingers can move on a surface
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/143—Touch sensitive instrument input devices
    • B60K2360/1438—Touch screens
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/01—Indexing scheme relating to G06F3/01
    • G06F2203/014—Force feedback applied to GUI
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Definitions

  • the present invention relates to a control device for a motor vehicle and a control method of said control device.
  • buttons on the dashboard of a car cockpit results in an increase in the number of buttons on the dashboard of a car cockpit.
  • the number of buttons can not be increased to infinity, especially because of the complexity generated, limited space, accessibility or cognitive load.
  • the interaction of the driver with the systems in the car can reproduce a situation of attentional overload in which the driver can not handle at best all the information of the driving task, resulting in errors and a time of longer detection.
  • buttons are centralize by replacing them with a touch screen. This makes it possible to continue to increase the number of functions, these becoming programmable and reconfigurable and exposed temporarily or permanently depending on the context or the activated function.
  • the screen thus includes a possibility of multifunctionality, while dematerializing the buttons and being customizable.
  • the screens have three other major advantages: they allow on the one hand a direct interaction (co-implementation of the display and input), on the other hand they are flexible (the display can be easily configured for a number of functions), and finally they are intuitive (familiar interaction method such as "point").
  • An object of the present invention is to provide a control device and a control method of said control device, which does not hinder driving, which is well perceived and appreciated by users, and which can be discriminable from other signals for a application of touch screens respecting automobile constraints.
  • the subject of the present invention is a control device for a motor vehicle comprising a tactile surface and a haptic feedback module configured to vibrate the tactile surface in response to a contact of the tactile surface, characterized in that the vibration of the generated tactile surface is obtained by displacements of the tactile surface of amplitude between 5 and 110 ⁇ with an acceleration of the displacement of the tactile surface between 2 * G and 8 * G.
  • the inventors have indeed discovered that for driving, a haptic feedback is better perceived by the user if the feeling is close to that of a manipulation of a conventional push-button.
  • the haptic feedback module is configured to generate amplitudes of displacements of the tactile surface:
  • the acceleration increases with the increase in the displacement amplitude for the small displacements (lower than 38 ⁇ ). For displacements of greater amplitude, beyond 54 ⁇ , the acceleration is also increased with the increase of the displacement but with smaller values than for the small displacements.
  • the duration of the vibration of the touch surface is for example less than 200 ms.
  • the frequency of the vibration of the touch surface is for example between 60 and 200Hz.
  • the subject of the invention is also a method for controlling a control device for a motor vehicle as described above, characterized in that the tactile surface is vibrated in response to contact with the touch surface by moving the touch surface on an amplitude between 5 and 110 ⁇ with an acceleration of the displacement of the touch surface between 2 * G and 8 * G.
  • amplitudes of displacements of the tactile surface are generated:
  • the displacement amplitude of the tactile surface and the acceleration of the displacement of the tactile surface have interdependent values.
  • increasing the value of the displacement amplitude of the touch surface is substantially proportional to the increase in the value of the acceleration of displacement of the touch surface.
  • FIG. 1 represents an example of a control device for a motor vehicle
  • - Figure 2 shows the acceleration values of the touch surface in number of G, as a function of the displacement values in ⁇ of the touch surface.
  • FIG. 1 represents a control device for a motor vehicle 1, for example arranged in a control panel of the vehicle.
  • the control device 1 comprises a tactile surface 2 and a haptic feedback module 4 configured to vibrate the touch surface 2 in response to contact of the touch surface 2 by a finger or any other activation means (for example a stylus ) of a user who has, for example, modified or selected a command.
  • a haptic feedback module 4 configured to vibrate the touch surface 2 in response to contact of the touch surface 2 by a finger or any other activation means (for example a stylus ) of a user who has, for example, modified or selected a command.
  • Hapic means a return by touch.
  • haptic feedback is a vibratory or vibrotactile signal.
  • the touch surface 2 is for example that of a touch screen.
  • a touch screen is an input device that allows users of a system to interact with it through touch. It allows the direct interaction of the user on the zone he wants to select for various uses such as, for example, the selection of a destination address or a name in a directory, the air conditioning system settings, enabling a dedicated function, selecting a track from a list, or generally scrolling through a list of choices, selection, validation, and error.
  • the touch surface 2 comprises a plate carrying a contact sensor to detect a pressing pressure or a movement of the finger or a stylus of the user.
  • the contact sensor is for example a pressure sensor, such as using the FSR technology for "Force Sensing Resistor” in English, that is to say using pressure-sensitive resistors.
  • SFR technology has a very good resistance and robustness, while having a high resolution. In addition, it is very reactive and precise, while being relatively stable over time. It can have a fairly long life, and can be used with any type of activation means, at a relatively low cost.
  • the senor operates by contacting two conductive layers for example by the action of the finger.
  • One of the embodiments consists in covering a glass slab with a layer of conductive ink, on which is superimposed a sheet of flexible polyester, itself covered on its inner face with a layer of ink conductive. Insulating and transparent pads isolate the slab from the polyester sheet. The activation on the tactile surface produces a slight depression of the polyester layer, which comes into contact with the conductive layer of the glass slab. The local contact of the two conductive layers causes a modification of the electric current applied to the slab, corresponding to a voltage gradient.
  • the contact sensor comprises flexible semiconductor layers sandwiched between for example a conductive layer and a resistive layer.
  • a conductive layer By exerting pressure or sliding on the FSR layer, its ohmic resistance decreases allowing, by applying a suitable voltage, to measure the pressure applied and / or the location of the place where the pressure is exerted.
  • the contact sensor is based on a capacitive technology.
  • the haptic feedback module 4 comprises at least one actuator 3 connected to the plate of the touch surface 2, to generate the haptic feedback as a function of a signal from the contact sensor.
  • the haptic feedback is a vibratory signal such as a vibration produced by a sinusoidal control signal or by a control signal comprising one or a succession of pulses, sent to the actuator 3.
  • the vibration is for example directed in the plane of the touch surface 2 or orthogonal to the plane of the touch surface 2 or directed in a combination of these two directions.
  • the latter are arranged under the touch surface 2, in different positions (in the center or on one side) or in different orientations (in the direction of the support on the surface or in another axis).
  • the actuator 3 is based on a technology similar to that of the speaker (in English: "Voice Coil"). It comprises a fixed part and a part movable in translation in an air gap of the fixed part, for example of the order of 200 m, between a first and a second position, parallel to a longitudinal axis of the movable part.
  • the moving part is for example formed by a movable magnet sliding inside a fixed coil or by a movable coil sliding around a fixed magnet, the movable part and the fixed part cooperating by electromagnetic effect.
  • the moving parts are connected to the plate so that the movement of the moving parts causes the translational movement of the plate to generate the haptic feedback to the user's finger.
  • the haptic feedback module 4 is configured to vibrate the touch surface 2 in response to a touch of the touch surface 2 so that the vibration of the touch surface 2 generated moves the touch surface 2 to a displacement amplitude dR between and 110 ⁇ (FIG. 1) with an acceleration of the displacement of the tactile surface 2 between 2 * G and 8 * G, with G corresponding substantially to 9.8 m / s 2 .
  • the inventors have indeed discovered that for driving, a haptic feedback is better perceived by the user if the feeling is close to that of a manipulation of a conventional push-button.
  • the haptic feedback module 4 is configured to generate amplitudes of displacements of the tactile surface 2 between 5 and 38 ⁇ for an acceleration of the tactile surface between 4.5 * G and 8 * G.
  • the haptic feedback module 4 is configured to generate amplitudes between 54 and 110 ⁇ , for an acceleration of the displacement of the touch surface 2 between 2 * G and 4.5 * G.
  • the haptic feedback module 4 is configured to generate displacement amplitudes of the tactile surface 2 between 5 and 38 ⁇ for an acceleration of the tactile surface between 4.5 * G and 8 * G and between 54 and 110 ⁇ , for an acceleration of the displacement of the touch surface 2 between 2 * G and 4.5 * G.
  • Two groups of points G1, G2 are schematically represented in FIG. 2.
  • a first group of points G1 represents the first sub-range for which the displacement amplitude of the tactile surface 2 is between 5 and 38 ⁇ and the acceleration of the tactile surface is between 4.5 * G and 8 * G.
  • a second group of points G2 represents the second sub-range for which the amplitudes of displacement are between 54 and 110 ⁇ , for an acceleration of the displacement of the tactile surface 2 between 2 * G and 4.5 * G.
  • the displacement amplitude values of the touch surface and the acceleration values of the displacement of the corresponding tactile surface form at least one group of points whose shape is in an elliptical shape.
  • the elliptical shape extends for example substantially along the diagonal of the operating range for which the amplitude of displacement is between 5 and 110 ⁇ and the acceleration of displacement is between 2 * G and 8 * G.
  • the displacement amplitude values of the touch surface and the acceleration values of the displacement of the corresponding tactile surface form two groups of points G1, G2 whose respective shape is part of a elliptical shape extending substantially along the diagonal P1, P2 of the respective sub-range.
  • the displacement amplitude of the touch surface and the acceleration of the displacement of the touch surface have interdependent values, that is to say that the determination of one involves the determination of the 'other.
  • increasing the value of the displacement amplitude of the touch surface is substantially proportional to the increase in the value of the acceleration of displacement of the touch surface.
  • the value of the acceleration must be increased with the increase in the amplitude of displacement for the small displacements (lower than 38 ⁇ ).
  • the acceleration is also increased with the increase of the displacement but at lower values than for the small displacements.
  • the duration of the vibration of the touch surface 2 is short, that is to say less than 200 ms and preferably between 70 and 200 ms, such that between 110 and 140 ms. Short signals are indeed better perceived in these ranges of displacement and acceleration of the displacement of the touch surface 2.
  • the frequency of the vibration of the touch surface 2 is for example between 60 and 200Hz, such as 120Hz.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • User Interface Of Digital Computer (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

The invention relates to a control method and a control device for a motor vehicle, comprising a touch-sensitive surface (2) and a haptic feedback module (4) designed to vibrate the touch-sensitive surface (2) in response to contact with the touch-sensitive surface (2), characterised in that the vibration of the touch-sensitive surface (2) generated is produced by movements (dR) of the touch-sensitive surface (2) of an amplitude of between 5 and 110 μm with an acceleration of the movement of the touch-sensitive surface (2) of between 2 and 8 G.

Description

DISPOSITIF DE CONTROLE POUR VEHICULE AUTOMOBILE ET PROCEDE DE  CONTROL DEVICE FOR A MOTOR VEHICLE AND METHOD OF
COMMANDE  ORDERED
La présente invention concerne un dispositif de contrôle pour véhicule automobile et un procédé de commande dudit dispositif de contrôle. The present invention relates to a control device for a motor vehicle and a control method of said control device.
Depuis ces dernières années, les voitures sont devenues plus faciles à manipuler avec l'apparition de nouvelles technologies émergentes (par exemple direction assistée, ABS, régulateur de vitesse, radar de recul etc.). Paradoxalement toutefois, le nombre de fonctions à contrôler pendant la conduite a lui aussi beaucoup augmenté. Ceci peut induire une certaine complexité liée à la mauvaise connaissance de l'utilisation de ces fonctionnalités et à leur diversité. La voiture est devenue un véritable espace de vie, perçue comme un centre de communication personnel et interconnecté : avec par exemple le lecteur MP3, le GPS, la connexion avec les téléphones portables.  In recent years, cars have become easier to handle with the emergence of new emerging technologies (eg power steering, ABS, cruise control, reversing radar etc.). Paradoxically, however, the number of functions to be controlled while driving has also increased significantly. This can lead to some complexity related to the poor knowledge of the use of these features and their diversity. The car has become a real living space, perceived as a personal and interconnected communication center: with for example MP3 player, GPS, connection with mobile phones.
L'introduction de ces nouvelles fonctions se traduit par une augmentation du nombre de boutons sur le tableau de bord d'un cockpit de voiture. Cependant, le nombre de boutons ne peut pas être augmenté à l'infini, du fait notamment de la complexité engendrée, de l'espace limité, de l'accessibilité ou de la charge cognitive. De plus, l'interaction du conducteur avec les systèmes embarqués dans la voiture peut reproduire une situation de surcharge attentionnelle dans laquelle le conducteur peut ne pas traiter au mieux toutes les informations de la tâche de conduite, se traduisant par des erreurs et un temps de détection plus long.  The introduction of these new features results in an increase in the number of buttons on the dashboard of a car cockpit. However, the number of buttons can not be increased to infinity, especially because of the complexity generated, limited space, accessibility or cognitive load. In addition, the interaction of the driver with the systems in the car can reproduce a situation of attentional overload in which the driver can not handle at best all the information of the driving task, resulting in errors and a time of longer detection.
Une possibilité est de centraliser les boutons en les remplaçant par un écran tactile. Ceci permet de continuer à augmenter le nombre des fonctions, celles-ci devenant programmables et reconfigurables et exposées de façon temporaire ou permanente selon le contexte ou la fonction activée. L'écran inclut ainsi une possibilité de multifonctionnalité, tout en dématérialisant les boutons et en étant personnalisable. De plus, les écrans présentent trois autres avantages majeurs : ils permettent d'une part une interaction directe (la co-implantation de l'affichage et de saisie), d'autre part ils sont souples (l'affichage peut être facilement configuré pour un certain nombre de fonctions), et enfin ils sont intuitifs (méthode d'interaction familière comme par exemple « pointer »).  One possibility is to centralize the buttons by replacing them with a touch screen. This makes it possible to continue to increase the number of functions, these becoming programmable and reconfigurable and exposed temporarily or permanently depending on the context or the activated function. The screen thus includes a possibility of multifunctionality, while dematerializing the buttons and being customizable. In addition, the screens have three other major advantages: they allow on the one hand a direct interaction (co-implementation of the display and input), on the other hand they are flexible (the display can be easily configured for a number of functions), and finally they are intuitive (familiar interaction method such as "point").
Cependant, contrairement au cas d'un bouton-poussoir, lorsque le conducteur interagit avec un écran tactile, il ne reçoit aucune rétroaction liée directement à son action sur l'interface, autre que le simple contact de son doigt s'écrasant sur l'écran. Afin de compenser la perte d'informations causée par la substitution d'interfaces mécaniques classiques par des écrans tactiles, il est prévu l'ajout d'un retour, tel que haptique, pour fournir une rétroaction du système à l'utilisateur. Ce retour permet d'éviter l'ambiguïté possible de la prise en compte de l'action de l'utilisateur par le système, susceptible de favoriser l'apparition de situations dangereuses. Il doit cependant en outre éviter de surcharger les voies visuelles et auditives déjà très sollicitées par la tâche de conduite. En effet, l'utilisation d'écrans tactiles dans un véhicule automobile ne doit pas gêner l'attention du conducteur. However, contrary to the case of a push button, when the driver interacts with a touch screen, he receives no feedback directly related to his action on the interface, other than the mere touch of his finger crashing on the screen. screen. In order to compensate for the loss of information caused by the substitution of conventional mechanical interfaces by touch screens, there is provision for the addition of feedback, such as haptic feedback, to provide system feedback to the user. This return makes it possible to avoid the possible ambiguity of taking into account the action of the user by the system, likely to favor the appearance of dangerous situations. However, it must also avoid overloading the visual and auditory pathways already heavily involved in the driving task. Indeed, the use of touch screens in a motor vehicle must not disturb the attention of the driver.
Un but de la présente invention est de fournir un dispositif de contrôle et un procédé de commande dudit dispositif de contrôle, qui ne gêne pas la conduite, qui soit bien perçu et apprécié par les utilisateurs, et qui puisse être discriminable des autres signaux pour une application d'écrans tactiles respectant les contraintes automobiles.  An object of the present invention is to provide a control device and a control method of said control device, which does not hinder driving, which is well perceived and appreciated by users, and which can be discriminable from other signals for a application of touch screens respecting automobile constraints.
A cet effet, la présente invention a pour objet un dispositif de contrôle pour véhicule automobile comportant une surface tactile et un module de retour haptique configuré pour faire vibrer la surface tactile en réponse à un contact de la surface tactile caractérisé en ce que la vibration de la surface tactile générée est obtenue par des déplacements de la surface tactile d'amplitude comprise entre 5 et 110 μΐτι avec une accélération du déplacement de la surface tactile comprise entre 2*G et 8*G. For this purpose, the subject of the present invention is a control device for a motor vehicle comprising a tactile surface and a haptic feedback module configured to vibrate the tactile surface in response to a contact of the tactile surface, characterized in that the vibration of the generated tactile surface is obtained by displacements of the tactile surface of amplitude between 5 and 110 μΐτι with an acceleration of the displacement of the tactile surface between 2 * G and 8 * G.
Les inventeurs ont en effet découvert que pour la conduite automobile, un retour haptique est mieux perçu par l'utilisateur si le ressenti est proche de celui d'une manipulation d'un bouton-poussoir classique. La manipulation d'un bouton-poussoir classique nécessitant un enfoncement généralement de l'ordre de plus d'un millimètre, les inventeurs ont constaté qu'en maîtrisant d'une part les valeurs d'accélération de la surface tactile et d'autre part les amplitudes des déplacements de la surface tactile, la vibration ressentie donnait l'illusion de la manipulation du bouton physique. Ce sont en effet la modification de ces deux paramètres physiques du retour vibratoire, entre 5 et 110 μΐη pour les déplacements de la surface tactile et entre 2*G et 8*G pour l'accélération du déplacement de la surface tactile, qui sont les plus pertinents pour agir sur le ressenti des utilisateurs, permettant au retour vibratoire d'être perçu comme un bouton et ainsi d'être mieux discriminé par l'utilisateur, évitant sa distraction au cours de la conduite.  The inventors have indeed discovered that for driving, a haptic feedback is better perceived by the user if the feeling is close to that of a manipulation of a conventional push-button. The manipulation of a conventional push-button requiring a depression generally of the order of more than one millimeter, the inventors have found that by controlling on the one hand the acceleration values of the tactile surface and secondly the amplitudes of the displacements of the tactile surface, the felt vibration gave the illusion of the manipulation of the physical button. It is indeed the modification of these two physical parameters of the vibratory feedback, between 5 and 110 μΐη for the displacements of the tactile surface and between 2 * G and 8 * G for the acceleration of the displacement of the tactile surface, which are the more relevant to act on the feelings of users, allowing the vibratory feedback to be perceived as a button and thus to be better discriminated by the user, avoiding distraction during driving.
Selon un exemple de réalisation, le module de retour haptique est configuré pour générer des amplitudes de déplacements de la surface tactile :  According to an exemplary embodiment, the haptic feedback module is configured to generate amplitudes of displacements of the tactile surface:
- comprises entre 5 et 38 μιη pour une accélération du déplacement de la surface tactile comprise entre 4,5*G et 8*G, et/ou - comprises entre 54 et 110 μιτι, pour une accélération du déplacement de la surface tactile comprise entre 2*G et 4,5*G. - between 5 and 38 μιη for an acceleration of the displacement of the touch surface between 4.5 * G and 8 * G, and / or - Between 54 and 110 μιτι, for an acceleration of the displacement of the touch surface between 2 * G and 4.5 * G.
On constate en effet qu'il est préférable pour se rapprocher du « ressenti bouton- poussoir » que l'accélération augmente avec l'augmentation de l'amplitude de déplacement pour les faibles déplacements (inférieurs à 38μηι). Pour des déplacements d'amplitude supérieure, au-delà de 54μηι, l'accélération est également augmentée avec l'augmentation du déplacement mais à des valeurs moins importantes que pour les faibles déplacements.  It can be seen that it is preferable to approach the "push-button feel" that the acceleration increases with the increase in the displacement amplitude for the small displacements (lower than 38μηι). For displacements of greater amplitude, beyond 54μηι, the acceleration is also increased with the increase of the displacement but with smaller values than for the small displacements.
La durée de la vibration de la surface tactile est par exemple inférieure à 200 ms.  The duration of the vibration of the touch surface is for example less than 200 ms.
La fréquence de la vibration de la surface tactile est par exemple comprise entre 60 et 200Hz. The frequency of the vibration of the touch surface is for example between 60 and 200Hz.
L'invention a aussi pour objet un procédé de commande d'un dispositif de contrôle pour véhicule automobile tel que décrit précédemment caractérisé en ce qu'on fait vibrer la surface tactile en réponse à un contact de la surface tactile en déplaçant la surface tactile sur une amplitude comprise entre 5 et 110 μιη avec une accélération du déplacement de la surface tactile comprise entre 2*G et 8*G. The subject of the invention is also a method for controlling a control device for a motor vehicle as described above, characterized in that the tactile surface is vibrated in response to contact with the touch surface by moving the touch surface on an amplitude between 5 and 110 μιη with an acceleration of the displacement of the touch surface between 2 * G and 8 * G.
Selon un exemple de réalisation, on génère des amplitudes de déplacements de la surface tactile :  According to an exemplary embodiment, amplitudes of displacements of the tactile surface are generated:
comprises entre 5 et 38 μΐτι pour une accélération du déplacement de la surface tactile comprise entre 4,5*G et 8*G, et/ou  between 5 and 38 μΐτι for an acceleration of the movement of the touch surface between 4.5 * G and 8 * G, and / or
comprises entre 54 et 110 μΐη, pour une accélération du déplacement de la surface tactile comprise entre 2*G et 4,5*G. between 54 and 110 μΐη, for an acceleration of the displacement of the tactile surface between 2 * G and 4.5 * G.
Selon un exemple de réalisation, l'amplitude de déplacement de la surface tactile et l'accélération du déplacement de la surface tactile présentent des valeurs interdépendantes.  According to an exemplary embodiment, the displacement amplitude of the tactile surface and the acceleration of the displacement of the tactile surface have interdependent values.
Par exemple, l'augmentation de la valeur de l'amplitude de déplacement de la surface tactile est sensiblement proportionnelle à l'augmentation de la valeur de l'accélération du déplacement de la surface tactile.  For example, increasing the value of the displacement amplitude of the touch surface is substantially proportional to the increase in the value of the acceleration of displacement of the touch surface.
DESCRIPTION SOMMAIRE DES DESSINS SUMMARY DESCRIPTION OF THE DRAWINGS
D'autres avantages et caractéristiques apparaîtront à la lecture de la description de l'invention, ainsi que sur les figures annexées qui représentent un exemple de réalisation non limitatif de l'invention et sur lesquelles : Other advantages and characteristics will appear on reading the description of the invention, as well as on the appended figures which represent a non-limiting exemplary embodiment of the invention and in which:
- La figure 1 représente un exemple de dispositif de contrôle pour véhicule automobile, et - la figure 2 représente les valeurs d'accélération de la surface tactile en nombre de G, en fonction des valeurs de déplacements en μηι de la surface tactile. FIG. 1 represents an example of a control device for a motor vehicle, and - Figure 2 shows the acceleration values of the touch surface in number of G, as a function of the displacement values in μηι of the touch surface.
Sur ces figures, les éléments identiques portent les mêmes numéros de référence. DESCRIPTION DÉTAILLÉE  In these figures, the identical elements bear the same reference numbers. DETAILED DESCRIPTION
La figure 1 représente un dispositif de contrôle pour véhicule automobile 1 , par exemple agencé dans un tableau de commande du véhicule. FIG. 1 represents a control device for a motor vehicle 1, for example arranged in a control panel of the vehicle.
Le dispositif de contrôle 1 comporte une surface tactile 2 et un module de retour haptique 4 configuré pour faire vibrer la surface tactile 2 en réponse à un contact de la surface tactile 2 par un doigt ou tout autre moyen d'activation (par exemple un stylet) d'un utilisateur ayant par exemple modifié ou sélectionné une commande.  The control device 1 comprises a tactile surface 2 and a haptic feedback module 4 configured to vibrate the touch surface 2 in response to contact of the touch surface 2 by a finger or any other activation means (for example a stylus ) of a user who has, for example, modified or selected a command.
On désigne par « haptique », un retour par le toucher. Ainsi, le retour haptique est un signal vibratoire ou vibrotactile.  "Haptic" means a return by touch. Thus, haptic feedback is a vibratory or vibrotactile signal.
La surface tactile 2 est par exemple celle d'un écran tactile. Un écran tactile est un périphérique d'entrée permettant aux utilisateurs d'un système d'interagir avec celui-ci grâce au toucher. Il permet l'interaction directe de l'utilisateur sur la zone qu'il veut sélectionner pour des utilisations diverses comme par exemple, la sélection d'une adresse de destination ou d'un nom dans un répertoire, les réglages du système de climatisation, l'activation d'une fonction dédiée, la sélection d'une piste parmi une liste, ou d'une manière générale le défilement parmi une liste de choix, la sélection, la validation, et l'erreur.  The touch surface 2 is for example that of a touch screen. A touch screen is an input device that allows users of a system to interact with it through touch. It allows the direct interaction of the user on the zone he wants to select for various uses such as, for example, the selection of a destination address or a name in a directory, the air conditioning system settings, enabling a dedicated function, selecting a track from a list, or generally scrolling through a list of choices, selection, validation, and error.
La surface tactile 2 comporte une plaque portant un capteur de contact pour détecter une pression d'appui ou un déplacement du doigt ou d'un stylet de l'utilisateur.  The touch surface 2 comprises a plate carrying a contact sensor to detect a pressing pressure or a movement of the finger or a stylus of the user.
Le capteur de contact est par exemple un capteur de pression, tel qu'utilisant la technologie FSR pour « Force Sensing Resistor » en anglais, c'est-à-dire utilisant des résistances sensibles à la pression. La technologie SFR présente une très bonne résistance et robustesse, tout en ayant une résolution élevée. De plus, elle est très réactive et précise, tout en étant relativement stable dans le temps. Elle peut avoir une durée de vie assez longue, et est utilisable avec tout type de moyen d'activation, à un coût relativement faible.  The contact sensor is for example a pressure sensor, such as using the FSR technology for "Force Sensing Resistor" in English, that is to say using pressure-sensitive resistors. SFR technology has a very good resistance and robustness, while having a high resolution. In addition, it is very reactive and precise, while being relatively stable over time. It can have a fairly long life, and can be used with any type of activation means, at a relatively low cost.
Selon une conception de la technologie FSR, le capteur fonctionne en mettant en contact deux couches conductrices par exemple par l'action du doigt. Une des réalisations consiste à recouvrir une dalle de verre d'une couche d'encre conductrice, sur laquelle est superposée une feuille de polyester souple, elle-même recouverte sur sa face interne d'une couche d'encre conductrice. Des plots isolants et transparents isolent la dalle de la feuille polyester. L'activation sur la surface tactile produit un léger enfoncement de la couche polyester, qui vient en contact avec la couche conductrice de la dalle de verre. Le contact local des deux couches conductrices entraîne une modification du courant électrique appliqué sur la dalle, correspondant à un gradient de tension. According to a design of the FSR technology, the sensor operates by contacting two conductive layers for example by the action of the finger. One of the embodiments consists in covering a glass slab with a layer of conductive ink, on which is superimposed a sheet of flexible polyester, itself covered on its inner face with a layer of ink conductive. Insulating and transparent pads isolate the slab from the polyester sheet. The activation on the tactile surface produces a slight depression of the polyester layer, which comes into contact with the conductive layer of the glass slab. The local contact of the two conductive layers causes a modification of the electric current applied to the slab, corresponding to a voltage gradient.
Selon un autre exemple, le capteur de contact comprend des couches semi-conductrices souples prises en sandwich entre par exemple une couche conductrice et une couche résistive. En exerçant une pression ou un glissé sur la couche FSR, sa résistance ohmique diminue permettant ainsi, par application d'une tension électrique adaptée, de mesurer la pression appliquée et / ou la localisation de l'endroit où la pression est exercée.  In another example, the contact sensor comprises flexible semiconductor layers sandwiched between for example a conductive layer and a resistive layer. By exerting pressure or sliding on the FSR layer, its ohmic resistance decreases allowing, by applying a suitable voltage, to measure the pressure applied and / or the location of the place where the pressure is exerted.
Selon un autre exemple, le capteur de contact est basé sur une technologie capacitive. Le module de retour haptique 4 comporte au moins un actionneur 3 relié à la plaque de la surface tactile 2, pour générer le retour haptique en fonction d'un signal issu du capteur de contact. Le retour haptique est un signal vibratoire tel qu'une vibration produite par un signal de commande sinusoïdal ou par un signal de commande comportant un ou une succession de puises, envoyé à l'actionneur 3. La vibration est par exemple dirigée dans le plan de la surface tactile 2 ou orthogonalement au plan de la surface tactile 2 ou encore dirigée selon une combinaison de ces deux directions.  In another example, the contact sensor is based on a capacitive technology. The haptic feedback module 4 comprises at least one actuator 3 connected to the plate of the touch surface 2, to generate the haptic feedback as a function of a signal from the contact sensor. The haptic feedback is a vibratory signal such as a vibration produced by a sinusoidal control signal or by a control signal comprising one or a succession of pulses, sent to the actuator 3. The vibration is for example directed in the plane of the touch surface 2 or orthogonal to the plane of the touch surface 2 or directed in a combination of these two directions.
Dans le cas de plusieurs actionneurs, ces derniers sont agencés sous la surface tactile 2, dans différentes positions (au centre ou sur un côté) ou dans différentes orientations (dans la direction de l'appui sur la surface ou dans un autre axe).  In the case of several actuators, the latter are arranged under the touch surface 2, in different positions (in the center or on one side) or in different orientations (in the direction of the support on the surface or in another axis).
Selon un exemple de réalisation, l'actionneur 3 repose sur une technologie similaire à celle du Haut-Parleur (en anglais : « Voice Coil »). Il comporte une partie fixe et une partie mobile en translation dans un entrefer de la partie fixe par exemple de l'ordre de 200 m, entre une première et une deuxième position, parallèlement à un axe longitudinal de la partie mobile. La partie mobile est par exemple formée par un aimant mobile coulissant à l'intérieur d'une bobine fixe ou par une bobine mobile coulissant autour d'un aimant fixe, la partie mobile et la partie fixe coopérant par effet électromagnétique. Les parties mobiles sont reliées à la plaque de manière que le mouvement des parties mobiles engendre le mouvement en translation de la plaque pour générer le retour haptique au doigt de l'utilisateur. Cette technologie est facilement contrôlable et permet de déplacer de fortes masses, comme celle d'un écran, à diverses fréquences et respecte les contraintes automobiles très strictes que sont un faible coût, une bonne résistance aux variations de températures importantes, et une facilité de mise en place. Le module de retour haptique 4 est configuré pour faire vibrer la surface tactile 2 en réponse à un contact de la surface tactile 2 de sorte que la vibration de la surface tactile 2 générée déplace la surface tactile 2 sur une amplitude de déplacement dR comprise entre 5 et 110 μιη (figure 1) avec une accélération du déplacement de la surface tactile 2 comprise entre 2*G et 8*G, avec G correspondant sensiblement à 9,8 m/s2. According to an exemplary embodiment, the actuator 3 is based on a technology similar to that of the speaker (in English: "Voice Coil"). It comprises a fixed part and a part movable in translation in an air gap of the fixed part, for example of the order of 200 m, between a first and a second position, parallel to a longitudinal axis of the movable part. The moving part is for example formed by a movable magnet sliding inside a fixed coil or by a movable coil sliding around a fixed magnet, the movable part and the fixed part cooperating by electromagnetic effect. The moving parts are connected to the plate so that the movement of the moving parts causes the translational movement of the plate to generate the haptic feedback to the user's finger. This technology is easily controllable and can move large masses, such as a screen, at various frequencies and meets the strict automotive constraints that are low cost, good resistance to significant temperature variations, and ease of use. in place. The haptic feedback module 4 is configured to vibrate the touch surface 2 in response to a touch of the touch surface 2 so that the vibration of the touch surface 2 generated moves the touch surface 2 to a displacement amplitude dR between and 110 μιη (FIG. 1) with an acceleration of the displacement of the tactile surface 2 between 2 * G and 8 * G, with G corresponding substantially to 9.8 m / s 2 .
Les inventeurs ont en effet découvert que pour la conduite automobile, un retour haptique est mieux perçu par l'utilisateur si le ressenti est proche de celui d'une manipulation d'un bouton-poussoir classique. La manipulation d'un bouton-poussoir classique nécessitant un enfoncement généralement de l'ordre de plus d'un millimètre, les inventeurs ont constaté qu'en maîtrisant d'une part les valeurs d'accélération de la surface tactile 2 et d'autre part les amplitudes des déplacements de la surface tactile 2, la vibration ressentie donnait l'illusion de la manipulation du bouton physique. Ce sont en effet la modification de ces deux paramètres physiques du retour vibratoire, entre 5 et 110 μηι pour les déplacements de la surface tactile 2 et entre 2*G et 8*G pour l'accélération du déplacement de la surface tactile 2, qui sont les plus pertinents pour agir sur le ressenti des utilisateurs, permettant au retour vibratoire d'être perçu comme un bouton et ainsi d'être mieux discriminé par l'utilisateur au cours de la conduite.  The inventors have indeed discovered that for driving, a haptic feedback is better perceived by the user if the feeling is close to that of a manipulation of a conventional push-button. The manipulation of a conventional push-button requiring a depression generally of the order of more than one millimeter, the inventors have found that by controlling on the one hand the acceleration values of the tactile surface 2 and other apart from the amplitudes of the displacements of the tactile surface 2, the vibration felt gave the illusion of the manipulation of the physical button. It is indeed the modification of these two physical parameters of the vibratory feedback, between 5 and 110 μηι for the displacements of the tactile surface 2 and between 2 * G and 8 * G for the acceleration of the displacement of the tactile surface 2, which are the most relevant to act on the feeling of users, allowing the vibratory feedback to be perceived as a button and thus to be better discriminated by the user during driving.
Dans la plage de fonctionnement pour laquelle l'amplitude de déplacement est comprise entre 5 et 110 μΐτι et l'accélération du déplacement est comprise entre 2*G et 8*G, on peut plus précisément définir deux sous-plages. In the operating range for which the amplitude of displacement is between 5 and 110 μΐτι and the acceleration of displacement is between 2 * G and 8 * G, it is more precisely possible to define two sub-ranges.
On prévoit par exemple que le module de retour haptique 4 soit configuré pour générer des amplitudes de déplacements de la surface tactile 2 comprises entre 5 et 38 μΐτι pour une accélération de la surface tactile comprise entre 4,5*G et 8*G. For example, it is provided that the haptic feedback module 4 is configured to generate amplitudes of displacements of the tactile surface 2 between 5 and 38 μΐτι for an acceleration of the tactile surface between 4.5 * G and 8 * G.
On peut aussi prévoir que le module de retour haptique 4 soit configuré pour générer des amplitudes comprises entre 54 et 110 μηι, pour une accélération du déplacement de la surface tactile 2 comprise entre 2*G et 4,5*G. It is also possible that the haptic feedback module 4 is configured to generate amplitudes between 54 and 110 μηι, for an acceleration of the displacement of the touch surface 2 between 2 * G and 4.5 * G.
Selon un exemple de réalisation, le module de retour haptique 4 est configuré pour générer des amplitudes de déplacements de la surface tactile 2 comprises entre 5 et 38 μΐτι pour une accélération de la surface tactile comprise entre 4,5*G et 8*G et comprises entre 54 et 110 μΐη, pour une accélération du déplacement de la surface tactile 2 comprise entre 2*G et 4,5*G. According to an exemplary embodiment, the haptic feedback module 4 is configured to generate displacement amplitudes of the tactile surface 2 between 5 and 38 μΐτι for an acceleration of the tactile surface between 4.5 * G and 8 * G and between 54 and 110 μΐη, for an acceleration of the displacement of the touch surface 2 between 2 * G and 4.5 * G.
Ainsi, selon le type de fonction sélectionnée par l'utilisateur, il est possible de générer un retour haptique distinct mais dont l'amplitude et l'accélération du déplacement restent comprises dans l'une des deux sous-plages. On a représenté schématiquement ainsi deux groupements de points G1 , G2 sur la figure 2. Thus, depending on the type of function selected by the user, it is possible to generate a distinct haptic feedback but whose amplitude and acceleration of displacement remain in one of the two sub-ranges. Two groups of points G1, G2 are schematically represented in FIG. 2.
Un premier groupement de points G1 représente la première sous-plage pour laquelle l'amplitude de déplacement de la surface tactile 2 est comprise entre 5 et 38 μηπ et l'accélération de la surface tactile est comprise entre 4,5*G et 8*G. Un deuxième groupement de points G2 représente la deuxième sous-plage pour laquelle les amplitudes de déplacement sont comprises entre 54 et 110 μηι, pour une accélération du déplacement de la surface tactile 2 comprise entre 2*G et 4,5*G. A first group of points G1 represents the first sub-range for which the displacement amplitude of the tactile surface 2 is between 5 and 38 μηπ and the acceleration of the tactile surface is between 4.5 * G and 8 * G. A second group of points G2 represents the second sub-range for which the amplitudes of displacement are between 54 and 110 μηι, for an acceleration of the displacement of the tactile surface 2 between 2 * G and 4.5 * G.
Selon un exemple de réalisation, les valeurs d'amplitude de déplacements de la surface tactile et les valeurs d'accélération du déplacement de la surface tactile correspondantes forment au moins un groupement de points dont la forme s'inscrit dans une forme elliptique. La forme elliptique s'étend par exemple sensiblement le long de la diagonale de la plage de fonctionnement pour laquelle l'amplitude de déplacement est comprise entre 5 et 110 μηι et l'accélération du déplacement est comprise entre 2*G et 8*G.  According to an exemplary embodiment, the displacement amplitude values of the touch surface and the acceleration values of the displacement of the corresponding tactile surface form at least one group of points whose shape is in an elliptical shape. The elliptical shape extends for example substantially along the diagonal of the operating range for which the amplitude of displacement is between 5 and 110 μηι and the acceleration of displacement is between 2 * G and 8 * G.
Dans l'exemple représenté en figure 2, les valeurs d'amplitude de déplacements de la surface tactile et les valeurs d'accélération du déplacement de la surface tactile correspondantes forment deux groupements de points G1 , G2 dont la forme respective s'inscrit dans une forme elliptique s'étendant sensiblement le long de la diagonale P1 , P2 de la sous- plage respective.  In the example shown in FIG. 2, the displacement amplitude values of the touch surface and the acceleration values of the displacement of the corresponding tactile surface form two groups of points G1, G2 whose respective shape is part of a elliptical shape extending substantially along the diagonal P1, P2 of the respective sub-range.
En outre, on peut prévoir que l'amplitude de déplacement de la surface tactile et l'accélération du déplacement de la surface tactile présentent des valeurs interdépendantes, c'est-à-dire que la détermination de l'une implique la détermination de l'autre.  In addition, it can be provided that the displacement amplitude of the touch surface and the acceleration of the displacement of the touch surface have interdependent values, that is to say that the determination of one involves the determination of the 'other.
Par exemple, l'augmentation de la valeur de l'amplitude de déplacement de la surface tactile est sensiblement proportionnelle à l'augmentation de la valeur de l'accélération du déplacement de la surface tactile.  For example, increasing the value of the displacement amplitude of the touch surface is substantially proportional to the increase in the value of the acceleration of displacement of the touch surface.
Le choix de l'accélération de la surface tactile en fonction de l'amplitude des déplacements de la surface tactile et vice-versa, permet d'améliorer le ressenti du retour haptique.  The choice of the acceleration of the tactile surface as a function of the amplitude of the displacements of the tactile surface and vice versa, makes it possible to improve the feeling of the haptic feedback.
Plus précisément, la correspondance entre le choix de l'amplitude des déplacements de la surface tactile 2 avec le choix des valeurs d'accélération permet d'affiner la ressemblance avec un bouton-poussoir classique. On constate en effet qu'un déplacement d'amplitude moyenne, comprise entre 54 et 110 μιη, est mieux perçu et discriminé s'il est associé à une accélération faible comprise entre 2 et 4,5*G (P2 sur la figure 2). En revanche, un déplacement d'amplitude faible, comprise entre 5 et 38 μιτι, est mieux perçu et discriminé s'il est associé à une accélération moyenne comprise entre 4,5*G et 8*G (P1 sur la figure 2). More precisely, the correspondence between the choice of the amplitude of the displacements of the tactile surface 2 with the choice of the acceleration values makes it possible to refine the resemblance with a conventional push-button. It can be seen that a displacement of average amplitude, between 54 and 110 μιη, is better perceived and discriminated if it is associated with a weak acceleration of between 2 and 4.5 * G (P2 in FIG. 2). . In contrast, a displacement of low amplitude, between 5 and 38 μιτι, is better perceived and discriminated if it is associated with an average acceleration between 4.5 * G and 8 * G (P1 in Figure 2).
Ainsi, pour se rapprocher du « ressenti bouton-poussoir », la valeur de l'accélération doit être augmentée avec l'augmentation de l'amplitude de déplacement pour les faibles déplacements (inférieurs à 38μΓη). Pour des déplacements d'amplitude supérieure, au- delà de 54μΐτι, l'accélération est également augmentée avec l'augmentation du déplacement mais à des valeurs plus faibles que pour les faibles déplacements.  Thus, to get closer to the "feeling push button", the value of the acceleration must be increased with the increase in the amplitude of displacement for the small displacements (lower than 38μΓη). For displacements of greater amplitude, beyond 54μΐτι, the acceleration is also increased with the increase of the displacement but at lower values than for the small displacements.
Selon un exemple de réalisation, la durée de la vibration de la surface tactile 2 est courte, c'est-à-dire inférieure à 200 ms et de préférence comprise entre 70 et 200ms, telle que comprise entre 110 et 140 ms. Les signaux courts sont en effet mieux perçus dans ces plages de déplacement et d'accélération du déplacement de la surface tactile 2. La fréquence de la vibration de la surface tactile 2 est par exemple comprise entre 60 et 200Hz, telle que 120Hz.  According to an exemplary embodiment, the duration of the vibration of the touch surface 2 is short, that is to say less than 200 ms and preferably between 70 and 200 ms, such that between 110 and 140 ms. Short signals are indeed better perceived in these ranges of displacement and acceleration of the displacement of the touch surface 2. The frequency of the vibration of the touch surface 2 is for example between 60 and 200Hz, such as 120Hz.

Claims

REVENDICATIONS
1. Dispositif de contrôle pour véhicule automobile comportant une surface tactile (2) et un module de retour haptique (4) configuré pour faire vibrer la surface tactile (2) en réponse à un contact de la surface tactile (2) caractérisé en ce que la vibration de la surface tactile (2) générée est obtenue par des déplacements de la surface tactile d'amplitude (dR) comprise entre 5 et 110 μΐτι avec une accélération du déplacement de la surface tactile (2) comprise entre 2 et 8 G. Motor vehicle control device having a touch surface (2) and a haptic feedback module (4) configured to vibrate the touch surface (2) in response to contact of the touch surface (2) characterized in that the vibration of the generated tactile surface (2) is obtained by displacements of the amplitude touch surface (dR) of between 5 and 110 μΐτι with an acceleration of the displacement of the touch surface (2) between 2 and 8 G.
2. Dispositif de contrôle selon la revendication 1 , caractérisé en ce que le module de retour haptique (4) est configuré pour générer des amplitudes (dR) de déplacements de la surface tactile (2) :  2. Control device according to claim 1, characterized in that the haptic feedback module (4) is configured to generate amplitudes (dR) of displacements of the tactile surface (2):
comprises entre 5 et 38 μιη pour une accélération du déplacement de la surface tactile (2) comprise entre 4,5*G et 8*G, et/ou  between 5 and 38 μιη for acceleration of the displacement of the touch surface (2) between 4.5 * G and 8 * G, and / or
- comprises entre 54 et 110 μηι, pour une accélération du déplacement de la surface tactile (2) comprise entre 2*G et 4,5*G.  - Between 54 and 110 μηι, for an acceleration of the displacement of the touch surface (2) between 2 * G and 4.5 * G.
3. Dispositif de contrôle selon l'une des revendications précédentes, caractérisé en ce que la durée de la vibration de la surface tactile (2) est inférieure à 200 ms.  3. Control device according to one of the preceding claims, characterized in that the duration of the vibration of the touch surface (2) is less than 200 ms.
4. Dispositif de contrôle selon l'une des revendications précédentes, caractérisé en ce que la fréquence de la vibration de la surface tactile (2) est comprise entre 60 et 200Hz. 4. Control device according to one of the preceding claims, characterized in that the frequency of the vibration of the touch surface (2) is between 60 and 200Hz.
5. Procédé de commande d'un dispositif de contrôle pour véhicule automobile selon l'une des revendications précédentes caractérisé en ce qu'on fait vibrer la surface tactile (2) en réponse à un contact de la surface tactile (2) en déplaçant la surface tactile (2) sur une amplitude de déplacement (dR) comprise entre 5 et 110 μΐη avec une accélération du déplacement de la surface tactile (2) comprise entre 2*G et 8*G. 5. A method of controlling a control device for a motor vehicle according to one of the preceding claims characterized in that it vibrates the touch surface (2) in response to a contact of the touch surface (2) by moving the tactile surface (2) on a displacement amplitude (dR) between 5 and 110 μΐη with an acceleration of the displacement of the touch surface (2) between 2 * G and 8 * G.
6. Procédé de commande selon la revendication précédente, caractérisé en ce qu'on génère des amplitudes de déplacements de la surface tactile (2):  6. Control method according to the preceding claim, characterized in that generates amplitudes of displacements of the tactile surface (2):
- comprises entre 5 et 38 μΐη pour une accélération du déplacement de la surface tactile (2) comprise entre 4,5*G et 8*G, et ou  - between 5 and 38 μΐη for an acceleration of the displacement of the touch surface (2) between 4.5 * G and 8 * G, and or
comprises entre 54 et 110 μηι, pour une accélération du déplacement de la surface tactile (2) comprise entre 2*G et 4,5*G.  between 54 and 110 μηι, for an acceleration of the displacement of the touch surface (2) between 2 * G and 4.5 * G.
7. Procédé de commande selon l'une des revendications 5 ou 6, caractérisé en ce que l'amplitude de déplacement de la surface tactile (2) et l'accélération du déplacement de la surface tactile (2) présentent des valeurs interdépendantes. 7. Control method according to one of claims 5 or 6, characterized in that the displacement amplitude of the touch surface (2) and the acceleration of the displacement of the touch surface (2) have interdependent values.
8. Procédé de commande selon l'une des revendications 5 à 7, caractérisé en ce que l'augmentation de la valeur de l'amplitude de déplacement de la surface tactile (2) est sensiblement proportionnelle à l'augmentation de la valeur de l'accélération du déplacement de la surface tactile (2). 8. Control method according to one of claims 5 to 7, characterized in that the increase of the value of the displacement amplitude of the touch surface (2) is substantially proportional to the increase in the value of the accelerating the displacement of the tactile surface (2).
9. Procédé de commande selon l'une des revendications 5 à 8, caractérisé en ce que la durée de la vibration de la surface tactile (2) est inférieure à 200 ms. 9. Control method according to one of claims 5 to 8, characterized in that the duration of the vibration of the touch surface (2) is less than 200 ms.
10. Procédé de commande selon l'une des revendications 5 à 9, caractérisé en ce que la fréquence de la vibration de la surface tactile (2) est comprise entre 60 et 200Hz. 10. Control method according to one of claims 5 to 9, characterized in that the frequency of the vibration of the touch surface (2) is between 60 and 200Hz.
EP14828182.7A 2013-12-19 2014-12-18 Control device for a motor vehicle and control method Ceased EP3084565A1 (en)

Applications Claiming Priority (2)

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FR1303010A FR3015382B1 (en) 2013-12-19 2013-12-19 CONTROL DEVICE FOR MOTOR VEHICLE AND CONTROL METHOD
PCT/FR2014/000288 WO2015092165A1 (en) 2013-12-19 2014-12-18 Control device for a motor vehicle and control method

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EP (1) EP3084565A1 (en)
JP (1) JP6599335B2 (en)
CN (1) CN106462224A (en)
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WO (1) WO2015092165A1 (en)

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FR3015382A1 (en) 2015-06-26
FR3015382B1 (en) 2017-01-13
JP2017502413A (en) 2017-01-19
JP6599335B2 (en) 2019-10-30
WO2015092165A1 (en) 2015-06-25
CN106462224A (en) 2017-02-22

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