Human-machine interface device and vehicle comprising such a human-machine interface device
The rotary control button with multiple contact elements simplifies human-machine interface use by integrating various commands into a single button, reducing attention and cognitive load in vehicles.
Patent Information
- Application Number
- FR2023003085
- Authority / Receiving Office
- FR · FR
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2023-03-30
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2043-03-30
AI Technical Summary
Human-machine interface devices in vehicles often divert driver attention and increase cognitive load due to numerous features and buttons, making them difficult to use efficiently.
A touchscreen system with a rotary control button that moves axially and is electrically connected through multiple contact elements, allowing different commands based on its position, reducing the need for multiple buttons and simplifying user interaction.
The solution allows easy and intuitive use of the interface without requiring visual attention, reducing cognitive overload and maintaining focus on primary tasks like driving.
Smart Images
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Abstract
Description
Title of the invention: Human-machine interface device and vehicle comprising such a human-machine interface device
[0001] The present invention relates to the field of human-machine interface devices, in particular those used in vehicles, in particular motor vehicles.
[0002] Human-machine interface devices installed in vehicles often have an image display screen and offer more and more features and buttons associated with these features, whether they are physical buttons or digital buttons accessible in pages of a graphical user interface having, for example, a plurality of pages.
[0003] This poses problems related to the driver's attention, which is increasingly taken up by the human-machine interface device to manage the various functionalities of the vehicle, and problems related to the cognitive load required to manage all these functionalities.
[0004] One of the aims of the invention is to provide a human-machine interface device that is easy to use, to allow its use by the user with limited attention and cognitive load devoted to the human-machine interface device.
[0005] To this end, the invention proposes a human-machine interface device comprising:
[0006] - a touch device having a touch surface,
[0007] - a control button mounted movable relative to the touch surface being rotating around an axis of rotation and mobile in translation along the axis of rotation between several axial positions including a high position, an intermediate position and a low position,
[0008] - a first contact element linked to the control button so as to move on the touch surface due to the rotation of the control button, the control button being permanently electrically connected to the touch surface via the first contact element,
[0009] - a second contact element arranged such that, in the high position and in the intermediate position, the second contact element is in contact with the touch surface, the control button being electrically connected to the touch surface via the second contact element, and, in the lower position, the electrical connection between the control button and the touch surface via the second contact element is interrupted, and
[0010] - a third contact element arranged such that, in the upper position, the third contact element is in contact with the touch surface and the control button is electrically connected to the touch surface via the third contact element, and, in the intermediate and low positions, the electrical connection between the control button and the touch surface via the third contact element is interrupted.
[0011] The association of an axially movable rotary knob with a touch surface used to detect an angular position and an axial position of the rotary knob makes it possible to associate different commands or control modes to the rotary knob depending on the axial position of the rotary knob, with simple detection.
[0012] Grouping controls onto a single rotary knob reduces the number of buttons the user has to operate. The rotary knob can be easily manipulated by the user by touch, without needing to look at the knob to determine its angular or axial position.
[0013] In particular embodiments, the human-machine interface device comprises one or more of the following optional features, taken individually or in all technically possible combinations:
[0014] - in the upper position and the intermediate position, the second contact element is electrically connected to the control button, and, in the lower position, said electrical connection between the second contact element and the control button is interrupted, and / or, in the upper position, the third contact element is electrically connected to the control button, and, in the intermediate and lower positions, said electrical connection between the third contact element and the control button is interrupted;
[0015] - the second contact element is mechanically linked to the control button of so as to move around the axis of rotation due to the rotation of the control button and / or the third contact element is mechanically linked to the control button so as to move around the axis of rotation due to the rotation of the control button;
[0016] - the second contact element is in permanent contact with the touch surface and / or the third contact element is in permanent contact with the touch surface;
[0017] - the control button is ring-shaped;
[0018] - the touch device includes a touch display screen, the touch surface being a display surface for the touch display screen;
[0019] - the human-machine display device includes an electrical module of The control is configured to detect interactions with the touch surface, with the electrical control module configured to discriminate measurement signals. generated by the first contact element, the second contact element and the third contact element depending on the signal / noise ratio of each of the measurement signals;
[0020] - the signal-to-noise ratio of a measurement signal generated by the first contact element is strictly greater than the signal / noise ratio of a measurement signal generated by the second contact element and / or the signal / noise ratio of a measurement signal generated by the first contact element is strictly greater than the signal / noise ratio of a measurement signal generated by the third contact element;
[0021] - the human-machine interface device is configured in such a way that each axial position of the control button corresponds to a respective control mode in which the angular position of the control button is associated with a particular command, the command being different from one control mode to another;
[0022] - the commands associated with the axial positions of the control button are different different commands of the same functional organ and / or commands of different functional organs.
[0023] The invention also relates to a motor vehicle comprising a human-machine interface device as defined above.
[0024] The invention and its advantages will be better understood upon reading the following description, given solely by way of non-limiting example, and made with reference to the accompanying drawings, on which
[0025] - [Fig.1] [Fig.1] is a schematic top view of an interface device man-machine comprising an axially movable rotary knob;
[0026] - [Fig.2] [Fig.2] is a schematic axial cross-sectional view of the interface device man-machine according to II-II on the [Fig.l];
[0027] - [Fig.3][Fig.4][Fig.5] Figures 3, 4 and 5 are schematic cross-sectional views of the human-machine interface device according to 111-111 on [Fig.l], illustrating the rotary knob in different axial positions.
[0028] As illustrated in [Fig.1], the human-machine interface device 2 includes a touch device 4 comprising a touch surface 6.
[0029] The touch device 4 is configured to detect an interaction with the touch surface 6, and preferably to detect the position of one or more contact points with the touch surface 6. The touch device 4 is preferably configured to simultaneously detect the positions of several contact points with the touch surface 6.
[0030] The touch device 4 includes, for example, an electrical control module 8 configured to detect the point or points of contact with the touch surface 6. The electrical control module 8 includes, for example, resistive sensors and / or capacitive sensors to detect the point or points of contact with the touch surface 6.
[0031] The human-machine interface device 2 includes a control button 10 disposed above the touch surface 6 and mounted rotatably around a rotation axis A.
[0032] The touch surface 6 is, for example, substantially flat. The axis of rotation A is, for example, substantially perpendicular to the touch surface 6.
[0033] The control button 10 is also movable in translation along the axis of rotation A between several axial positions including a high position (or high axial position), an intermediate position (or intermediate axial position) and a low position (or low axial position). The intermediate position is located axially between the high position and the low position.
[0034] The control button 10 is away from the touch surface 6 in the high position and closer to the touch surface 6 in the low position.
[0035] The control button 10 is intended to be manipulated by the user to interact with the human-machine interface device 2.
[0036] When manipulating the control button 10, the user touches the control button 10 which is therefore electrically connected with the user's hand.
[0037] The human-machine interface device 2 comprises several contact elements, each contact element being mechanically and electrically linked to the control button 10 such that the contact element is in contact with the touch surface 6 and electrically connected to the control button 10 in at least one of the plurality of axial positions of the control button 10.
[0038] When a contact element is in contact with the touch surface 6 and electrically connected to the control button 10, and the user touches the control button 10, the touch device 4 detects the position of said contact element on the touch surface 6.
[0039] The human-machine interface device 2 includes a first contact element 12 mechanically linked to the control button 10 so as to move on the touch surface 6 due to the rotation of the control button 10, the control button 10 being permanently electrically connected with the touch surface 6 via the first contact element 12.
[0040] Preferably, the first contact element 12 is mechanically linked to the control button 10 so as to be in permanent contact with the touch surface 6 and is electrically connected to the control button 10 permanently.
[0041] The human-machine interface device 2 comprises a second contact element 14 arranged such that, in the upper and intermediate positions, the control button 10 is electrically connected to the touch surface 6 via the second contact element 14, and, in the lower position, the electrical connection between the control button 10 and the touch surface 6 is made via the second contact element 14. contact element 14 is interrupted.
[0042] The second contact element 14 is arranged for example in such a way that, in the high position and the intermediate position, the second contact element 14 is electrically connected to the control button 10, and, in the low position, said electrical connection is interrupted.
[0043] The second contact element 14 is preferably arranged so that it is in contact with the touch surface 6 at least in the upper and intermediate positions. For example, the second contact element 14 is arranged so that it is in contact with the touch surface 6 in the upper, intermediate, and lower positions. In particular, the second contact element 14 is arranged so that it is in constant contact with the touch surface 6.
[0044] The human-machine interface device 2 includes a third contact element 16 arranged such that, in the high position, the control button 10 is electrically connected to the touch surface 6 via the third contact element 16, and, in the intermediate and low positions, the electrical connection between the control button 10 and the touch surface 6 via the third contact element 16 is interrupted.
[0045] The third contact element 16 is preferably arranged so that it is in contact with the touch surface 6 at least in the upper position. For example, the third contact element 16 is arranged so that it is in contact with the touch surface 6 in the upper, intermediate, and lower positions. In particular, the third contact element 16 is arranged so that it is in constant contact with the touch surface 6.
[0046] The control button 10 is electrically connected with the touch surface 6 permanently via the first contact element 12, the control button 10 is electrically connected with the touch surface 6 via the second contact element 14 in the high position and the intermediate position but not in the low position, and the control button 10 is electrically connected to the touch surface 6 via the third contact element 16 in the high position but not in the intermediate and low positions.
[0047] As illustrated in Figures 2 to 5, the human-machine interface device 2 comprises a base 18 fixedly mounted on the touch surface 6, the control button 10 being movablely mounted on the base 18 being movable in rotation around the axis of rotation A and movable in translation along the axis of rotation A between several axial positions including the high position ([Fig.5]), the intermediate position (Figures 2 and 3) and the low position ([Fig.4]).
[0048] The different axial positions are discrete. In a preferred embodiment, the control button 10 has exactly three axial positions, at knowing the high position, the intermediate position and the low position.
[0049] The control button 10 is for example rotatably mounted on the base 18 by means of a bearing device 20 allowing axial movement of the control button 10 along the axis of rotation A.
[0050] The human-machine interface device 2 preferably includes an axial locking device 22 configured to hold the control button 10 axially in at least one of the axial positions of the control button 10, and in particular each of the axial positions.
[0051] The axial locking device 22 is for example configured to allow movement from one of the axial positions to another adjacent axial position by exerting an axial force exceeding a force threshold.
[0052] The axial locking device 22 has, for example, one or more notches 24, at least one of the axial positions being associated with a corresponding notch, and in particular each axial position being associated with a respective notch.
[0053] Optionally, the human-machine interface device 2 includes an axial return device 26 configured to return the control button 10 to one of the axial positions.
[0054] In one embodiment, the axial return device 26 is configured to return the control button 10 to the intermediate position.
[0055] The axial return device 26 comprises, for example, at least one elastically deformable axial return member 28. Each axial return member 28 is, for example, a spring.
[0056] In one embodiment, the control button 10 has a stable axial position, defined for example by a notch 24 of the axial locking device 22, the axial return device 26 returning the control button 10 from each of the other positions to the stable axial position in the absence of user action. The stable axial position is, for example, the intermediate position.
[0057] In one embodiment, the control button 10 has two stable axial positions, each defined for example by a respective notch 24 of the axial locking device 22, the axial return device 26 returning the control button 10 from each of the other positions to the next stable axial position in the return direction in the absence of action by the user.
[0058] In a particular embodiment, the low position and the intermediate position are stable and the axial return device 26 returns the control button 10 from the high position to the intermediate position.
[0059] In another particular embodiment, the intermediate position and the high position are stable and the axial return device 26 returns the control button 10 from the low position to the intermediate position.
[0060] As seen in [Fig.2], the first contact element 12 is for example mechanically linked to the control button 10 so as to move on the touch surface 6 due to the rotation of the control button 10 while being in contact with the touch surface 6 permanently, and is electrically connected to the control button 10 permanently.
[0061] The human-machine interface device 2 includes, for example, a first mechanical link 30 between the first contact element 12 and the control button 10, the first mechanical link 30 allowing the translation of the control button 10 (axially mobile) relative to the first contact element 12 (in permanent contact with the touch surface 6) while linking the first contact element 12 to the control button 10 in rotation around the axis of rotation A.
[0062] The first mechanical link 30 is, for example, a sliding link allowing translation parallel to the axis of rotation A as schematically illustrated in [Fig.2],
[0063] Preferably, the human-machine interface device 2 includes a first return device 32 configured to maintain the first contact element 12 in permanent contact with the touch surface 6.
[0064] The first return device 32 comprises, for example, a first elastic return member 34. The first return member 34 is, for example, interposed between the control button 10 and the first contact element 12. The first return member 34 is, for example, an elastic tab formed in a single piece of material with the control button 10.
[0065] The first contact element 12 is for example electrically connected to the control button 10 permanently, that is to say regardless of the axial position of the control button 10 and regardless of the angular position of the control button 10.
[0066] The human-machine interface device 2 includes, for example, a first electrical connection 36 electrically connecting the control button 10 and the first contact element 12 permanently.
[0067] In particular, the human-machine interface device 2 includes a first electrical link 36 electrically connecting the control button 10 and the first contact element 12 regardless of the axial position of the control button 10 and regardless of the angular position of the control button 10.
[0068] As illustrated in Figures 3 to 5, the second contact element 14 is for example mechanically linked to the control button 10 in such a way that the second contact element 14 is in contact with the touch surface 6 at least in the high position ([Fig.5]) and the intermediate position ([Fig.3]), and in particular permanently.
[0069] The human-machine interface device 2 includes, for example, a second mechanical link 38 arranged between the second contact element 14 and the control button 10, the second mechanical link 38 allowing the translation of the control button 10 (axially mobile) relative to the second contact element 14.
[0070] Preferably, the second mechanical link 38 links the second contact element 14 to the control button 10 which rotates around the axis of rotation A.
[0071] The second mechanical link 38 is for example a sliding link allowing a translation parallel to the axis of rotation A as schematically illustrated in Figures 3 to 5.
[0072] The human-machine interface device 2 includes, for example, a second return device 40 configured to keep the second contact element 14 in permanent contact with the touch surface 6.
[0073] The second return device 40 comprises, for example, a second elastic return member 42. The second return member 42 is, for example, interposed between the control button 10 and the second contact element 14. The second return member 42 is, for example, an elastic tab formed in a single piece of material with the control button 10.
[0074] As illustrated in Figures 3 to 5, the second contact element 14 is for example electrically connected to the control button 10 in such a way that the electrical connection with the control button 10 is effective in the high position ([Fig.5]) and in the intermediate position ([Fig.3]) and that the electrical connection with the control button 10 is interrupted in the low position ([Fig.4]).
[0075] The human-machine interface device 2 includes, for example, a second electrical connection 44 electrically connecting the control button 10 and the second contact element 14 in such a way that the electrical connection with the control button 10 is effective in the high position and in the intermediate position and the electrical connection with the control button 10 is interrupted in the low position.
[0076] The second electrical connection 44 includes, for example, a switch comprising two electrical contacts arranged so as to be in contact with each other in the high and intermediate positions, and separated from each other in the low position.
[0077] As can be seen in Figures 3 to 5, the third contact element 16 is for example mechanically linked to the control button 10 in such a way that the third contact element 16 is in contact with the touch surface 6 at least in the high position ([Fig.4]), and in particular permanently.
[0078] The human-machine interface device 2 includes, for example, a third mechanical link 46 arranged between the third contact element 16 and the button of control 10, the third mechanical link 46 allowing the translation of the control button 10 relative to the third contact element 16, which is for example in permanent contact with the touch surface 6.
[0079] Preferably, the third mechanical link 46 links the second contact element 16 to the control button 10 which rotates around the axis of rotation A.
[0080] The third mechanical link 46 is for example a sliding link allowing a translation parallel to the axis of rotation A as schematically illustrated in Figures 3 to 5.
[0081] The human-machine interface device 2 includes, for example, a third return device 48 configured to keep the third contact element 16 in permanent contact with the touch surface 6.
[0082] The third return device 48 includes, for example, a third elastic return member 50. The third return member 50 is, for example, interposed between the control button 10 and the third contact element 16. The third return member 50 is, for example, an elastic tab formed in a single piece of material with the control button 10.
[0083] As illustrated in Figures 3 to 5, in one embodiment, the third contact element 16 is electrically connected to the control button 10 such that the electrical connection between the third contact element 16 and the control button 10 is effective in the high position, and the electrical connection between the third contact element 16 and the control button 10 is interrupted in the intermediate position and in the low position.
[0084] The human-machine interface device 2 includes, for example, a third electrical connection 52 electrically connecting the control button 10 and the third contact element 16 in such a way that the electrical connection between the third contact element 16 and the control button 10 is effective in the high position, and that the electrical connection between the third contact element 16 and the control button 10 is interrupted in the intermediate position and in the low position.
[0085] The third electrical connection 52 includes, for example, a switch comprising two electrical contacts arranged so as to be in contact with each other in the upper position, and separated from each other in the intermediate and lower positions.
[0086] The operation of the human-machine interface device 2 will now be described with reference to Figures 1 to 5, assuming that the control button 10 is manipulated by the user and that the user therefore touches the control button 10.
[0087] When the user touches the control button 10, in each axial position of the control button 10, the touch device 4, and in particular the electrical module control element 8, is capable of detecting the position of each of the first contact element 12, the second contact element 14 and the third contact element 16 which is in contact with the touch surface 6 and electrically connected to the control button 10.
[0088] The first contact element 12 is for example in permanent contact with the touch surface 6 and permanently electrically connected with the control button 10.
[0089] When the control button 10 is rotated around the axis of rotation A, the first contact element 12 describes an arc of a circle on the touch surface 6 centered on the axis of rotation A
[0090] The human-machine interface device 2, and in particular the electrical control module 8, is configured to determine the angular position of the control button 10 as a function of the position of the first contact element 12 on the touch surface 6.
[0091] The human-machine interface device 2 is for example configured in such a way that each axial position of the control button 10 corresponds to a respective control mode in which the angular position of the control button 10 is associated with a particular command, the command being different from one control mode to another.
[0092] The human-machine interface device 2, and in particular the electrical control module 8, is for example configured to determine the operating mode according to the detection or not of the second contact element 14 on the touch surface 6 and the detection or not of the third contact element 16 on the touch surface 6.
[0093] As illustrated in [Fig.3], the control button 10 is in an intermediate position.
[0094] The second contact element 14 is electrically connected to the control button 10, for example via the first electrical connection 44, and the electrical connection between the third contact element 16 and the control button 10 is interrupted.
[0095] The electrical control module 8 therefore detects the contact of the second contact element 14 on the touch surface 6, but does not detect the contact of the third contact element 16 on the touch surface 6, and is configured to determine that consequently the control button 10 is in an intermediate position.
[0096] The electrical control module 8 associates with the angular position of the control button 10 a command corresponding to the intermediate position of the control button 10.
[0097] As illustrated in [Fig. 4], the control button 10 is lowered into the position low (as illustrated by arrow D).
[0098] The electrical connection between the second contact element 14 and the control button 10 is interrupted, and the electrical connection between the third contact element 16 and the control button 10 is interrupted.
[0099] The electrical control module 8 does not detect the contact of the second contact element 14 on the touch surface 6 nor the contact of the third contact element 16 on the touch surface 6, and is configured to determine that consequently the control button 10 is in the down position.
[0100] The electrical control module 8 associates with the angular position of the control button 10 a command corresponding to the lower position of the control button 10.
[0101] As illustrated in [Fig. 5], the control button 10 is raised to the upper position (as illustrated by arrow U). The electrical connection between the second contact element 14 and the control button 10 is effective, and the electrical connection between the third contact element 16 and the control button 10 is effective.
[0102] The second contact element 14 is electrically connected to the control button 10, for example via the first electrical connection 44, and the third contact element 16 is electrically connected to the control button 10, for example via the third electrical connection 52
[0103] The electrical control module 8 detects the contact of the second contact element 14 on the touch surface 6 and detects the contact of the third contact element 16 on the touch surface 6, and is configured to determine that, as a result, the control button 10 is in the up position
[0104] The electrical control module 8 associates with the angular position of the control button 10 a command corresponding to the high position of the control button 10.
[0105] It is desirable that the electrical control module 8 be able to differentiate the contact signals generated by the first contact element 12, the second contact element 14 and the third contact element 16, in particular to discriminate the contact corresponding to the first contact element 12, whose position on the touch surface 6 allows the angular position of the control button 10 to be determined, from the contacts corresponding to the second contact element 14 and the third contact element 16.
[0106] Each of the first contact element 12, the second contact element 14 and the third contact element 16 causes the generation of a measurement signal by the touch device 4 when it is in contact with the touch surface 6 and electrically connected to the control button 10 touched by a user, the measurement signal having a signal / noise ratio.
[0107] In one embodiment, the first contact element 12, the second contact element 14 and the third contact element 16 are configured to cause the generation of measurement signals having different signal / noise ratios.
[0108] This can be achieved by providing contact elements 12 of different shapes, in particular with different contact areas.
[0109] Correspondingly, the electrical control module 8 is configured to discriminate the measurement signals from the touch device 4 generated by the contact elements according to the signal / noise ratios of the measurement signals.
[0110] In one embodiment, the first contact element 12, the second contact element 14 and the third contact element 16 are configured in such a way that the signal / noise ratio of the measurement signal generated by the contact of the first contact element 12 on the touch surface 6 is strictly greater than that of the measurement signals generated by each of the second contact element 14 and the third contact element 16.
[0111] A higher signal-to-noise ratio for the first contact element 12 makes it possible to distinguish the first contact element 12 from the second contact element 14 and the third contact element 16 while having a good signal-to-noise ratio for the measurement signal corresponding to the first contact element 12, which makes it possible to detect more precisely the position of the first contact element 12, and therefore the angular position of the control button 10.
[0112] A lower signal-to-noise ratio for the second contact element 14 and the third contact element 16 is sufficient to detect or not the second contact element 14 and the third contact element 16, knowing that it is not necessary to determine precisely the position of the second contact element 14 and the third contact element 16 on the touch surface 6.
[0113] The discrimination of the second contact element 14 and the third contact element 16 is less critical insofar as the axial position of the control button 10 is determined according to the number of contacts detected for the second contact element 14 and the third contact element 16: one contact corresponds to the intermediate position, no contact corresponds to the low position and two contacts corresponds to the high position.
[0114] The commands associated with the axial positions of the control button 10 can be different commands of the same functional organ and / or commands of different functional organs.
[0115] In one embodiment, the three axial positions of the control button 10 correspond to three different commands of the same functional organ.
[0116] In a particular embodiment, the three axial positions of the control knob 10 correspond to three different controls of a heating, ventilation and air conditioning system, for example a temperature control, an air flow control and a control for selecting a mode of airflow distribution between different ventilators.
[0117] In one particular embodiment, the three axial positions of the control button 10 correspond to three different controls of an infotainment system, for example a volume control, a source selection control and a navigation control in the menu of the selected source.
[0118] In one embodiment, the three axial positions of the control button 10 correspond to three commands of three different functional organs.
[0119] In a particular embodiment, the three axial positions of the control button 10 correspond to a navigation control in a vehicle settings menu (engine, suspension, propulsion mode...), a navigation control in a control menu of a heating, ventilation and air conditioning system and a navigation control in a control menu of an infotainment system.
[0120] Optionally, the human-machine interface device 2 includes a digital touchscreen 54 configured to display digital images, the touch surface 6 being the image display surface of the touchscreen 54.
[0121] The touch screen 54 includes, in a known manner, a pixel matrix. The touch screen 54 is, for example, selected from a liquid crystal display, a light-emitting diode (LED) display, in particular an organic light-emitting diode (OLED) display, or a plasma display.
[0122] Optionally, the control button 10 is ring-shaped and has a central opening 56, an area of the touch screen 54 being visible through the central opening 56.
[0123] This allows, for example, the display of information associated with a command generated using the command button 10, in the area of the touch screen 54 visible through the central opening 56.
[0124] Thanks to the invention, it is possible to have a human-machine interface device 2 having a control button 10 presenting different control modes, each associated with a respective axial position of the control button 10.
[0125] Such a human-machine interface device 2 can be easily used by The user interacts with the device by touch, without monopolizing their attention or causing cognitive overload. This allows the user to remain better focused on their primary task, such as driving a vehicle.
[0126] The detection of the axial position of the control button 10 and the angular position of the control button 10 can be carried out reliably and simply to be carried out and implemented, via the touch surface 6.
[0127] In particular, the use of two contact elements for the detection of the axial position and one contact element for the angular position makes it possible to achieve reliable detection of the axial position as a function of the number of contacts detected and to achieve precise detection of the angular position as a function of a contact dedicated to the detection of this angular position.
Claims
1. Claims Human-machine interface device comprising: - a touch device (4) having a touch surface (6), - a control button (10) mounted to move relative to the touch surface (6) by being rotatable around an axis of rotation (A) and movable in translation along the axis of rotation (A) between several axial positions including a high position, an intermediate position and a low position, - a first contact element (12) connected to the control button (10) so as to move on the touch surface (6) due to the rotation of the control button (10), the control button (10) being electrically connected with the touch surface (6) permanently via the first contact element (12), - a second contact element (14) arranged in such a way that, in the upper position and the intermediate position, the second contact element (14) is in contact with the touch surface (6), the control button (10) being electrically connected with the touch surface (6) via the second contact element (14), and, in the lower position, the electrical connection between the control button (10) and the touch surface (6) via the second contact element (14) is interrupted, - a third contact element (16) arranged in such a way that, in the upper position, the third contact element (16) is in contact with the touch surface (6) and the control button (10) is electrically connected to the touch surface (6) via the third contact element (16), and, in the intermediate position and the lower position, the electrical connection between the control button (10) and the touch surface (6) via the third contact element (16) is interrupted, and - an electrical control module (8) configured to detect interactions with the touch surface (6), the electrical control module (8) being configured to discriminate measurement signals generated by the first contact element (12), the second contact element (14) and the third contact element (16) depending on the signal / noise ratio of each of the measurement signals.
2. A human-machine interface device according to claim 1, wherein: - in the high position and the intermediate position, the second contact element (14) is electrically connected to the control button (10), and, in the low position, said electrical connection between the second contact element (14) and the control button (10) is interrupted, and / or - in the high position, the third contact element (16) is electrically connected to the control button (10), and, in the intermediate position and the low position, said electrical connection between the third contact element (16) and the control button (10) is interrupted.
3. A human-machine interface device according to claim 1 or claim 2, wherein the second contact element (14) is mechanically connected to the control button (10) so as to move about the axis of rotation (A) due to the rotation of the control button (10) and / or the third contact element (16) is mechanically connected to the control button (10) so as to move about the axis of rotation (A) due to the rotation of the control button (10).
4. A human-machine interface device according to any preceding claim, wherein the second contact element (14) is in permanent contact with the touch surface (6) and / or the third contact element (16) is in permanent contact with the touch surface (6).
5. A human-machine interface device according to any preceding claim, wherein the control button (10) is annular in shape.
6. A human-machine interface device according to any preceding claim, wherein the touch device (4) comprises a touch display screen (54), the touch surface (6) being a display surface of the touch display screen (54).
7. A human-machine interface device according to any one of the preceding claims, wherein the signal-to-noise ratio of a measurement signal generated by the first contact element (12) is strictly greater than the signal-to-noise ratio of a measurement signal generated by the second contact element (14) and / or the signal-to-noise ratio of a measurement signal generated by the first contact element (12) is strictly greater than the signal-to-noise ratio of a measurement signal generated by the third contact element (16).
8. A human-machine interface device according to any preceding claim, configured in such a way that each axial position of the control button (10) corresponds to a respective control mode in which the angular position of the control button (10) is associated with a particular control, the control being different from one control mode to another.
9. Human-machine interface device according to any one of the preceding claims, in which the controls associated with the axial positions of the control button (10) are different controls of the same functional member and / or controls of different functional members.
10. A motor vehicle comprising a human-machine interface device according to any one of the preceding claims.