FR3058938A1 - INTERFACE FOR MOTOR VEHICLE AND INTERFACING METHOD - Google Patents

Abstract

The invention relates to an interface (1) for controlling at least one function of a motor vehicle body, comprising: - at least one control member (2) comprising: - a rotating wheel (4), - at less a metal index (6) carried by the rotary wheel (4) and movable with it, - a guide (5), the rotary wheel (4) being supported and guided in rotation by the guide (5), - a touch screen (30) configured to detect the position of the metal index (6), the guide (5) being fixed on the touch screen (30), the metal index (6) being arranged next to the screen tactile device (30), characterized in that: - the guide (5) and the rotating wheel (4) have respective shapes of rings with a central orifice (7), - the control member (2) further comprising: ○ a spacer (12) fixed on the touch screen (30) in the central orifice (7), and ○ at least a first conductor and a second conductor (13aa ... 1 3dc), each conductor ( 13aa ... 1 3dc) having at least a first end arranged at a rear face (12a) of the spacer (12) opposite the touch screen (30) and at least a second end arranged at the level a front face (12b) of the spacer (12) opposite to the rear face (12a) and intended to be touched by the user, the first ends being spaced apart from one another on the rear face ( 12a) and the second ends being spaced from each other on the front face (1 2b). The invention also relates to an interfacing method.

Description

Holder (s): DAV Simplified joint stock company.

Extension request (s)

Agent (s): VALEO COMFORT AND DRIVING ASSISTANCE.

Pty INTERFACE FOR MOTOR VEHICLE AND INTERFACING METHOD.

FR 3 058 938 - A1 (£ /) The invention relates to an interface (1) for controlling at least one function of a motor vehicle member, comprising:

- at least one control member (2) comprising:

- a rotary wheel (4),

- at least one metal index (6) carried by the rotary wheel (4) and movable therewith,

a guide (5), the rotary wheel (4) being supported and guided in rotation by the guide (5),

- a touch screen (30) configured to detect the position of the metal index (6), the guide (5) being fixed on the touch screen (30), the metal index (6) being arranged opposite the '' touch screen (30), characterized in that:

the guide (5) and the rotary wheel (4) have respective shapes of rings with a central orifice (7),

- the control member (2) further comprising:

O a spacer (12) fixed on the touch screen (30) in the central opening (7), and

O at least a first conductor and a second conductor (13aa ... 1 3dc), each conductor (13aa ... 1 3dc) having at least one first end arranged at a rear face (12a) of the spacer (12) facing the touch screen (30) and at least one second end arranged at a front face (12b) of the spacer (12) opposite the rear face (12a) and intended to be touched by the user, the first ends being spaced from each other on the rear face (12a) and the second ends being spaced from each other on the front face (1 2b).

The invention also relates to an interfacing method.

-1 Interface for motor vehicle and interfacing process

The present invention relates to an interface for controlling at least one function of a motor vehicle member. The invention also relates to an interfacing method.

In the automotive field, the control of electrical components, such as the air conditioning or navigation system, is generally carried out by means of a mechanical rotary button, possibly associated with a screen.

The mechanical button generally comprises a wheel whose angular positioning is determined for example by an optical sensor or by an electric rotary switch. The angular position of the dial allows a processing unit to select a particular command and to control for example a shutter actuator in the air conditioning system or allows the user to access the input keyboard to enter a destination in the navigation system. Pictograms are generally placed around the wheel to indicate to the user how to handle the wheel to obtain the desired command. This visual environment remains frozen in time, however, without possibilities of adaptation depending on the manipulation of the button, for example to display information related to navigation in the submenus.

There is also known a control system in which a rotary wheel is mounted on a guide fixed on a touch screen. In this system, a capacitive touchscreen placed on a screen detects the angular position of a metal index carried by the wheel. The capacitive touch screen thus allows on the one hand, the tactile input of information and on the other hand, the detection of the angular position of the rotary wheel mounted on the screen. This system is interesting because it allows you to program the display of the touch screen supporting the wheel in relation to different functions to control. For example, the screen can be programmed to display the position of the shutters and the temperature of the air conditioning system. This same screen with thumbwheel can also be used to display the vehicle audio system parameter settings.

In this system, however, certain manipulations of the dial cannot be performed. For example, the user cannot move through the menus displayed on the screen by pressing the right / left, up / down arrows, generally arranged on conventional navigation buttons. This type of manipulation is

-2 however advantageous because it facilitates navigation in the submenus without requiring too much attention on the part of the user.

One of the aims of the present invention is to provide an interface and an interfacing method which allow the user to widen the range of possible interactions with the command button.

To this end, the subject of the invention is an interface for controlling at least one function of a motor vehicle member, comprising:

at least one control member comprising: a rotary wheel, at least one metal index carried by the rotary wheel and movable with it, a guide, the rotary wheel being supported and guided in rotation by the guide, a touch screen configured for detecting the position of the metal index, the guide being fixed on the touch screen, the metal index being arranged opposite the touch screen, characterized in that:

- the guide and the rotary wheel have respective shapes of rings with a central orifice,

- the control unit further comprising:

o a spacer fixed on the touch screen in the central orifice, and o at least a first conductor and a second conductor, each conductor having at least one first end arranged at a rear face of the spacer opposite the touch screen and at least one second end arranged at a front face of the spacer opposite the rear face and intended to be touched by the user, the first ends being spaced from one another on the rear face and the second ends being spaced from one another on the front face.

Additional interactions with the rotary manipulation of the wheel can thus be possible for the user such as entering a command of the type "right or left >>," front or rear >>, "up or down >> , by simple contact or pressing on the control member or as entering a

-3 control by simply swiping the user's finger on the control unit.

According to one or more characteristics of the interface, taken alone or in combination:

- the interface comprises at least three conductors, the first ends and / or the second ends of which are aligned in the same first direction,

- the interface comprises at least three conductors, the first ends and / or the second ends of which are aligned in the same second direction perpendicular to the first direction,

the interface comprises at least four conductors, the first ends and / or the second ends of which are arranged in a mesh of meshes of constant dimensions, the first and the second ends of the same conductor are arranged one above the other,

- the conductors are wholly or partly made of indium oxide - tin,

- the front face of the spacer is opaque except at the level of display zones defining at least two symbols, such as arrows,

- the first and / or second ends of the conductors have conductive pads extending in the plane of the front face or of the rear face of the spacer,

- the first and second ends of the conductors are attached to the spacer, the first ends being connected to the second ends by fittings bypassing the spacer,

- the conductors pass through the spacer, the first end of each conductor emerging from the rear face of the spacer, the second end emerging from the front face,

the interface comprises at least one support sensor configured to measure a parameter representative of a support force exerted on the capacitive touch screen, in particular through the control member, the interface is configured to validate the choice of an element selected when the capacitive touch screen detects a contact of the control member and when a pressing force exerted on the capacitive touch screen exceeds a detection threshold or to generate a haptic feedback on

-4 the touch screen when a pressing force exerted on the capacitive touch screen exceeds a detection threshold,

- the metal index is a metal tab, for example made of Copper,

- the conductors are made of opaque metallic material, such as for example copper.

The invention also relates to an interfacing method for handling an interface as described above, in which the interface differentiates at least one contact detected at the level of a first conductor, from a contact detected at the level a second driver, for determining a command to be implemented.

According to one or more characteristics of the interfacing process, taken alone or in combination:

- the interface differentiates a contact in at least four distinct sectors from the front face of the spacer,

- the interface recognizes a sliding of a finger on the front face of the spacer by successive detections of a contact on at least two conductors within a predetermined period,

- the interface detects a direction and / or a speed of the sliding of the finger and / or that two simultaneous sliding of the fingers approach or move away from each other and / or recognizes that the sliding of the finger traces at least a number, symbol or letter,

- we measure a pressing force exerted on the capacitive touch screen through the control unit to validate a selection,

- a pressing force exerted on the capacitive touchscreen is measured through the spacer of the control member associated with the contact detected at the level of a conductor to configure a parameter associated with said conductor,

- the associated parameter is a scrolling speed.

Other characteristics and advantages of the invention will emerge from the following description, given by way of example and without limitation, with reference to the appended drawings in which:

- Figure 1 shows a view of a portion of the interior of a

-5 motor vehicle comprising an interface which is installed by way of example at the front panel of the vehicle,

- Figure 2 shows a partial sectional view l-l of the interface of Figure 1,

- Figure 3 shows a schematic view of the interface of Figure 2,

FIG. 4 shows a schematic view of a front face of the control member of the interface of FIG. 2,

- Figure 5 shows a view similar to Figure 2 for another example of interface,

FIG. 6a shows a front view of another example of an interface,

FIG. 6b shows a view similar to FIG. 5a, for another example of interface,

FIG. 6c shows a view similar to FIG. 5a, for another example of an interface, and

- Figure 7 is a flowchart showing different steps of an interfacing process.

In these figures, identical elements have the same reference numbers.

The following embodiments are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference relates to the same embodiment, or that the characteristics apply only to a single embodiment. Simple features of different embodiments can also be combined or interchanged to provide other embodiments.

Figure 1 shows elements of a front part of the passenger compartment of a motor vehicle.

The passenger compartment has an interface 1 which is particularly suitable for being housed in the front panel of the vehicle.

Such an interface 1 allows the control of at least one function of a motor vehicle member such as the control of the functions of an air conditioning system, an audio system, a telephone system or even a navigation system. This interface 1 can also be used for window regulator controls, positioning of the exterior mirrors or even for moving

-6 motorized seats or to control interior lights, central locking, sunroof, hazard lights or mood lights.

Interface 1 allows the user, for example, to scroll through a list, select or confirm a selection. For example, it allows the user to select a destination mailing address or name from a directory, air conditioning system settings, or select a music track from a list.

The interface 1 comprises at least one control member 2 and a touch screen 30.

The touch screen 30 comprises a capacitive touch screen 3 and a display screen

10.

Figure 2 shows a partial and more detailed sectional view of the interface 1.

The capacitive touch screen 3 comprises at least one capacitive sensor 31 and a front plate 32 arranged on the capacitive sensor 31.

The capacitive sensor 31 makes it possible to detect a variation in capacitance at the surface of the front plate 32. The capacitive sensor 31 can for example detect a contact or a movement of a user's finger. The capacitive sensor 31 also makes it possible to determine the spatial coordinates of the finger on the slab 3. The capacitive sensor 31 is for example formed by a network of electrodes extending over all or part of the surface of the slab. The electrodes are for example made of ITO (indium tin oxide) which allow the sensor 31 to be transparent.

The rigidity of the capacitive touchscreen 3 is obtained by means of the rigid front plate 32 (or contact plate), such as a glass plate. The front plate 32 arranged on the capacitive sensor 31 faces the user once mounted in the passenger compartment. The tactile surface of the panel 3 is thus formed by the surface of the front plate 32. This surface can be flat or curved.

The display screen 10, such as a TFT (“Thin-Film transistor”) screen or an LED screen or an LCD screen is configured to display information associated with the manipulation of the interface 1. L 'screen 10 is arranged under the capacitive sensor 31 so as to form a touch screen 30 ("touchscreen" in English). The capacitive sensor 31 and the front plate 32 are at least partially transparent.

The interface 1 can also include at least one support sensor 11 configured to measure a parameter representative of a support force exerted on the

-7 capacitive touchscreen 3. The interface 1 can therefore also measure a pressing force exerted on the capacitive touchscreen 3 through a support exerted on the control member 2 fixed to the screen 3. The support sensors 11 able to measure a pressing force exerted on the capacitive touch screen 3 thus also make it possible to measure a pressing force exerted on the control member 2. A single device for measuring the pressing force is thus used to measure both when pressure is exerted on the control member 2 or on the capacitive touchscreen 3.

It is thus possible to execute a function, such as a validation of selection by measuring a pressing force exerted on the capacitive touchscreen 3 through the control member 2.

This bearing force information can also allow a better interpretation of the commands of the user having touched the capacitive touchscreen 3 or the control member 2, for example by subjecting the execution of a command to the comparison of the bearing force measured at one or more thresholds.

This information can also be used to configure the haptic feedback generated on the touch screen 30, for example relative to the intensity of the force measured.

The support sensor 11 is for example arranged at the rear of the touch screen 30 (FIG. 2). The interface 1 comprises for example four support sensors 11, a sensor 11 being arranged in each corner of the screen 30 (FIG. 3).

The measurement of the support force is for example obtained from a capacitive measurement of the small displacement of the screen 30 (not perceptible) resulting from a support exerted on the slab 3. The capacitive measurement of the displacement can be carried out for example by means of an electrode fixed to the rear of the touch screen 30 and facing a fixed metallized part or vice versa, the metallized part being disposed at the rear of the touch screen 30 facing an electrode fixed measurement.

The measurement of the support force can also be carried out by inductive measurement or by ultrasonic measurement or by measurement of deformation by means of strain gauges or FSR sensors (for "Force Sensing Resistor" in English).

A processing unit 20 can be connected to the support sensors 11 and to the capacitive sensor 31 (FIG. 3). The processing unit 20 comprises one or more microcontrollers or computers, having memories and programs adapted to modify the display of the display screen 10, to receive the position information detected by the capacitive touchscreen 3 and to receive the measurement signals of

-8 sensors 11. This is for example the on-board computer of the motor vehicle. The processing unit 20 can be configured to evaluate a support force from the support sensors 11, in particular by adding the forces measured by each sensor 11.

The interface 1 can also comprise at least one vibratory actuator 8 making it possible to vibrate the touch screen 30 in response to the detection of a contact or of a press or a movement of a finger on the capacitive touch screen 3. The possibility of vibrating the screen 30 can here also make it possible to vibrate the control member 2 fixed on the slab 3.

An example of a control member 2 is better visible in the schematic sectional view in FIG. 2 as well as in the schematic view in FIG. 4.

In FIG. 2, it can be seen that the control member 2 comprises a rotary wheel 4, at least one metal index 6 carried by the rotary wheel 4 and movable in rotation with the latter, a guide 5 (or bearing), the rotary wheel 4 being supported and guided in rotation by the guide 5, a spacer 12 and at least a first conductor 13aa ... 13dc and a second conductor 13aa ... 13dc.

The guide 5 is fixed to the capacitive touch screen 3, for example by gluing.

The guide 5 is for example positioned on a substantially median line of the screen 30 (FIG. 1), for example in the middle or on the edge thereof. The interface 1 may include several control elements 2, two for example, one for the driver and the other for the passenger.

The rotary wheel 4 is movable in rotation about an axis of rotation A perpendicular to the surface of the capacitive touchscreen 3.

The rotary wheel 4 and the guide 5 have respective general cylindrical coaxial shapes in the form of rings with a central orifice 7 passing through. The spacer 12 is for example cylindrical. It is fixed to the capacitive touchscreen 3, for example by gluing, in the central orifice 7.

The end of the rotary wheel 4 facing the capacitive touch screen 3 carries at least one metal index 6 which is thus arranged opposite the capacitive touch screen 3. It is for example a tongue metallic, for example copper.

The metal index 6 is electrically connected to external metal surfaces 9 of the rotary wheel 4 intended to be manipulated by the user.

For this, the rotary wheel 4 is for example entirely made of metallic material. According to another example, the rotary wheel 4 comprises a

-9 coating arranged at the level of the external gripping surfaces, such as a chrome envelope connected to the metal index 6.

By touching the external metal surfaces 9 electrically connected to the metal index 6, the user brings electrical charges opposite the capacitive touch screen 3 which are then detected by the capacitive sensor 31. The detection of these charges in the area of the control member 2 makes it possible to deduce therefrom the contact of the control member 2 by the user. The determination of the coordinates of the metal index 6 by the capacitive touch screen 3 makes it possible to determine the angular position of the mobile metal index 6 above the capacitive touch screen 3.

Each conductor 13aa ... 13dc has at least one first end arranged at a rear face 12a of the spacer 12 opposite the capacitive touchscreen 3 and at least one second end arranged at a front face 12b of the spacer 12 opposite the rear face 12a and intended to be touched by the user.

The first ends of each conductor are spaced from each other on the rear face 12a of the spacer 12. Also, the second ends of each conductor are spaced from each other on the front face 12b.

The first ends of the conductors 13aa ... 13dc may include conductive areas 14 extending in the plane of the rear face 12a of the spacer 12. The second ends of the conductors 13aa ... 13dc may include conductive areas 14 s 'extending in the plane of the front face 12b of the spacer 12. The conductive pads 14 for example have a respective shape of ring or rectangle and can be hollow or solid. The size and shape of the conductive pads 14 may vary between the first ends of the conductors or between the second ends of the conductors or between the first and second ends of the same conductor. The conductive pads 14 make it possible to improve the detection sensitivity (finger side 16 and / or slab side 3) by widening the dimensions of the conductors at the ends arranged on the faces of the spacer 12.

The first and second ends of the conductors 13aa ... 13dc can be added elements on the rear and front faces 12a, 12b of the spacer 12. Thus, for example, the ends of the conductors 13aa ... 13dc can be conductive pads 14 etched on the faces 12a, 12b of the

-10 spacers 12 or printed on a film itself disposed on the faces of the spacer 12. The first ends are connected to the second ends by fittings bypassing the spacer 12, for example comprising circuit tracks etched on the faces of the spacer 12 or fixed on the film carrying conductive pads 14 and then by wires, which can be grouped together in sheet 18, connecting the circuits together (FIG. 2).

According to another example visible in FIG. 5, the conductors 13aa ... 13dc pass through the spacer 12, the first end of each conductor 13aa ... 13dc emerging from the rear face 12a of the spacer 12 and the second end emerging of the front face 12b. The connections connecting the first and second ends of the conductors are for example rigid rods.

The first and second ends of the same conductor 13aa ... 13dc can be arranged one above the other on the spacer 12, which simplifies computer processing. In fact, in this case, the coordinates of the finger 16 on the front face 12b are the same as the coordinates of the charges detected by the capacitive touch screen 3.

Other configurations can however be considered. For example, the spacer 12 may have a front face 12b of a different dimension than the rear face 12a, for example of larger dimension. The second ends on the front face 12b can then be more spaced apart than the first ends on the rear face 12a. According to another example, several first ends of the front face 12b of a conductor can be connected to a single second end of the rear face 12a, for economic reasons for example or to have more precision or even to have no dead zone, without detection, at the front face 12b.

The conductors 13aa ... 13dc can be made in whole or in part of indium tin oxide (ITO), such as ITO ink, which allows them to be transparent.

In the case of ends reported on the rear and front faces 12a, 12b of the spacer 12, the ends of the conductors and the circuits can be deposited in ITO ink. In the case of conductors passing through the spacer 12, the ends as well as the rigid rods can be made of ITO material.

The spacer 12 can be made of transparent material, such as plastic. The images displayed by the screen 10 can then be viewed by the user. The display

-11 can be programmed so that the images displayed correspond to information related to the manipulation of the control member 2.

The front face 12b of the spacer 12 can also be opaque except at the level of display zones. These display zones let the light from the screen 10 pass through the spacer 12. The display zones can define one or more patterns or symbols to be backlit, such as a four-direction arrow or four unidirectional arrows 15a , 15b, 15c, 15d; 15 indicating four orientations spaced from each other by 90 ° (Figures 6a and 6b).

In another example, the symbols are displayed on the screen 10 around the control member 2 instead of being backlit.

In the case of an opaque or partially opaque spacer 12 in particular, the conductors 13aa ... 13dc can be made of an opaque metallic material, such as for example copper.

The interface 1 is further configured to differentiate at least one contact of the user's finger on a first conductor at the front face 12b of the spacer 12, from a contact at the level of a second conductor, for determining an order to be implemented. For example, the interface 1 is configured to differentiate a contact in at least four distinct sectors of the circular front face 12b of the spacer 12 (FIG. 6a).

Thus according to an example of use, when the user touches the front face 12b of the spacer 12, for example at the level of the symbol 15b (FIG. 6a), electric charges are brought at the level of the second ends of the conductors arranged under the symbol 15b, that is to say the conductors 13bc, 13cb, 13cc and 13dc in the example (step 101 of the interfacing method 100; FIGS. 4 and 7).

The charges are transported by these conductors opposite the capacitive touchscreen 3. These charges are detected by the capacitive sensor 31 at the first ends of the conductors 13bc, 13cb, 13cc and 13dc.

The interface 1 differentiates at least one contact detected at the level of a first conductor, from a contact detected at the level of a second conductor, which makes it possible to deduce therefrom the contact of the control member 2 by the user at the symbol 15b (step 102 of the interfacing method 100).

The interface 1 can then determine the command to be implemented (step 103), in this case in the example, a command associated with an oriented arrow

-12 to the right.

Additional interactions with the manipulation in rotation of the wheel 4, are then possible for the user such as for example the entry of a command of the type "right or left", "front or back >>," up or down >> , by simple contact or pressing on the front face 12b of the spacer 12.

It is also possible to measure a pressing force exerted on the capacitive touchscreen 3 through the control member 2 by means of the pressing sensors 11, associated with a contact detected at the level of a conductor, in order to parameterize a parameter. a command associated with said driver.

The associated parameter can be a scrolling speed. The speed of travel, for example of elements to be selected or of progression of the value of a parameter, can be determined relative to the pressing force exerted on the driver.

Thus, for example, the harder the user presses on a conductor located on the right side, the faster the speed of scrolling the parameters in one direction, to the right for example, increases quickly, the speed decreasing with the drop in pressure exerted by user. The harder the user presses on a conductor located on the left, the faster the speed of the parameters increases in the opposite direction.

The measurement of the pressing force can thus be used to configure a speed of execution of a command in one direction.

The number of conductors 13aa ... 13dc of the control member 2 depends in particular on their dimensions, the dimension of the spacer 12, the desired sensitivity and the sensitivity of the capacitive touchscreen 3. The number of conductors 13aa ... 13dc is for example between two and thirty, as twelve in the example shown in Figure 4. The control member 2 comprises for example a maximum of four second ends of conductors per cm ² distributed at the front face 12b of the spacer 12.

The interface 1 can be configured to recognize a sliding of a finger on the front face 12b of the spacer 12 by successive detections of a contact on at least two conductors within a predetermined period.

It can also be provided that at least three conductors, such as the three conductors 13ba, 13bb, 13bc, have first ends aligned in a first direction X on the rear face 12a and / or have second ends

-13 aligned in the same first direction X on the front face 12b.

Thus, according to an example of operation, when the user slides his finger 16 from left to right on the front face 12b, he successively passes his finger over the second ends of three conductors 13ba, 13bb, 13bc substantially aligned (see arrow F in Figure 4). The slab 3 perceives that the loads brought by the user move from driver to driver and deduces therefrom a sliding of the user's finger 16. The detection of this sliding of a finger can allow the control of a particular function, such as the scrolling of parameters to be selected from a list.

According to an exemplary embodiment, at least three conductors, such as the four conductors 13aa, 13ba, 13bc, 13dc shown in FIG. 4 for example, have first ends aligned in a second direction Y on the rear face 12a and / or second ends aligned in the same second direction Y on the front face 12b, the second direction Y being perpendicular to the first direction X. The interface 1 can thus distinguish a sliding of the horizontal finger from a sliding of the vertical finger.

According to an exemplary embodiment, at least four conductors, such as the twelve conductors 13aa ... 13dc of FIG. 4 for example, have first ends which are arranged in a mesh with mesh of constant dimension on the rear face 12a and / or second ends which are arranged according to a mesh with mesh of constant dimension on the front face 12b. The mesh is polygonal, such as triangular or square.

According to another example, the first and / or second ends are arranged on a mesh of concentric circles.

By meshing the spacer 12 with conductors, the detection is improved, which can allow the interface 1 to detect a direction and / or a speed of the sliding of the finger and / or that two simultaneous sliding of the fingers approach or approach. move away from each other or recognize that the swipe of your finger traces a letter, number or symbol.

Thus, the interface 1 can be configured for handwriting recognition, in particular for recognizing at least one symbol, a letter or a number, from the shapes traced by a continuous sliding of a finger.

The direction and speed of the slide can be used to set the direction and

-14 the scrolling speed. The sliding of fingers moving towards or away can for example indicate the user's wish to zoom on screen 10.

The validation of a selection made by contact, pressing or sliding of the finger on one or more conductors among all the conductors, can be carried out in different ways.

The validation can for example be carried out by detection of the pressing force exerted on the spacer 12, by means of the force sensors 11 as described above.

Validation can be carried out by contact or pressing of the front face 12b of the spacer 12 at a central zone 17 (FIG. 6c), the interface 1 then being configured to command validation when the capacitive touchscreen 3 detects loads at the first ends of the conductors 13cb and 13bb in the example.

The interface 1 can also be configured to allow a command cancellation so as to cancel the last commanded action (selection or validation) when the user presses or touches a predetermined zone of reversing on the capacitive touchscreen 3. The predetermined backtrack area can be located at the central area 17 of the spacer 12 (Figure 6c).

It is thus understood that additional interactions with the manipulation in rotation of the wheel 4 are possible for the user such as for example the entry of a command of the type "right or left >>," front or rear >>, "up or bottom >>, by simple contact or pressing on the front face 12b of the spacer 12 or as entering a command by sliding the user's finger on the control member. In addition, the increase in the number of conductors can allow the determination of more advanced parameters of the finger swipe, such as the speed, the approximation or mutual distance of two simultaneous finger swipes and the handwriting recognition. The range of possible interactions can thus be greatly increased.

Claims (19)

1. Interface (1) for controlling at least one function of a motor vehicle member, comprising: at least one control member (2) comprising: - a rotary wheel (4), at least one metal index (6) carried by the rotary wheel (4) and movable therewith, a guide (5), the rotary wheel (4) being supported and guided in rotation by the guide (5), a touch screen (30) configured to detect the position of the metal index (6), the guide (5) being fixed on the touch screen (30), the metal index (6) being arranged opposite the touch screen (30), characterized in that: the guide (5) and the rotary wheel (4) have respective shapes of rings with a central orifice (7), - the control unit (2) further comprising: o a spacer (12) fixed on the touch screen (30) in the central orifice (7), and o at least a first conductor and a second conductor (13aa ... 13dc), each conductor (13aa ... 13dc) having at least one first end arranged at a rear face (12a) of the spacer (12) facing the touch screen (30) and at least one second end arranged at a front face (12b) of the spacer (12) opposite the rear face (12a) and intended to be touched by the user, the first ends being spaced from one another on the rear face (12a) and the second ends being spaced from each other on the front face (12b). 2. Interface (1) according to the preceding claim, characterized in that it comprises at least three conductors (13aa ... 13dc) whose first ends and / or the second ends are aligned in the same first direction (X). 3. Interface (1) according to the preceding claim, characterized in that it comprises at least three conductors (13aa ... 13dc) whose first ends and / or the second ends are aligned in the same second direction (Y) -16 perpendicular to the first direction (X). 4. Interface (1) according to one of the preceding claims, characterized in that it comprises at least four conductors (13aa ... 13dc), the first ends and / or the second ends of which are arranged in a mesh of constant dimensions. 5. Interface (1) according to one of the preceding claims, characterized in that the first and second ends of the same conductor (13aa ... 13dc) are arranged one above the other. 6. Interface (1) according to one of the preceding claims, characterized in that the conductors (13aa ... 13dc) are wholly or partly made of indium tin oxide. 7. Interface (1) according to one of the preceding claims, characterized in that the front face (12b) of the spacer (12) is opaque except at the level of display areas defining at least two symbols (15; 15a , 15b, 15c, 15d), such as arrows. 8. Interface (1) according to the preceding claim, characterized in that the conductors (13aa ... 13dc) are made of opaque metallic material, such as for example copper. 9. Interface (1) according to one of the preceding claims, characterized in that the first and / or second ends of the conductors (13aa ... 13dc) comprise conductive pads (14) extending in the plane of the face front (12b) or rear (12a) of the spacer (12). 10. Interface (1) according to one of the preceding claims, characterized in that the first and second ends of the conductors (13aa ... 13dc) are attached to the spacer (12), the first ends being connected to the second ends by fittings bypassing the spacer (12). 11. Interface (1) according to one of claims 1 to 9, characterized in that the conductors (13aa ... 13dc) pass through the spacer (12), the first end of each conductor (13aa ... 13dc) emerging from the rear face (12a) of the spacer (12), the second end opening from the front face (12b). 12. Interface (1) according to one of the preceding claims, characterized in that it comprises at least one support sensor (11) configured to measure a parameter representative of a support force exerted on the capacitive touchscreen (3) -17 in particular through the control member (2). 13. Interfacing method (100) for the manipulation of an interface (1) according to one of the preceding claims, in which the interface (1) differentiates at least one contact detected at a first conductor, d 'a contact detected at a second conductor (102), for determining a command to be implemented (103). 14. The interfacing method (100) according to the preceding claim, wherein the interface (1) differentiates a contact in at least four distinct sectors of the front face (12b) of the spacer (12). 15. Interfacing method (100) according to one of claims 13 or 14, wherein the interface (1) recognizes a sliding of the finger on the front face (12b) of the spacer (12) by successive detections d '' a contact on at least two conductors within a predetermined period. 16. The interfacing method (100) according to the preceding claim, wherein the interface (1) detects a direction and / or a speed of the sliding of the finger and / or that two simultaneous sliding of the fingers approach or move away. 'from each other and / or recognizes that the swipe of the finger traces at least one number, symbol or letter. 17. Interfacing method (100) according to one of claims 13 to 16, in which a pressing force is exerted on the capacitive touch screen (3) through the control member (2) to validate a selection. 18. Interfacing method (100) according to one of claims 13 to 17, in which a bearing force exerted on the capacitive touchscreen (3) is measured through the spacer (12) of the member command (2) associated with the contact detected at the level of a conductor for setting a parameter of a command associated with said conductor. 19. Interfacing method (100) according to the preceding claim, in which the associated parameter is a scrolling speed. 1/3