WO2022069339A1 - Commande coulissante et/ou rotative pouvant être positionnée librement sur une surface de positionnement et dotée d'une partie d'actionnement mobile et ayant une influence sur le champ électromagnétique alternatif pour la détermination d'informations de position - Google Patents

Commande coulissante et/ou rotative pouvant être positionnée librement sur une surface de positionnement et dotée d'une partie d'actionnement mobile et ayant une influence sur le champ électromagnétique alternatif pour la détermination d'informations de position Download PDF

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Publication number
WO2022069339A1
WO2022069339A1 PCT/EP2021/076184 EP2021076184W WO2022069339A1 WO 2022069339 A1 WO2022069339 A1 WO 2022069339A1 EP 2021076184 W EP2021076184 W EP 2021076184W WO 2022069339 A1 WO2022069339 A1 WO 2022069339A1
Authority
WO
WIPO (PCT)
Prior art keywords
positioning surface
oscillating circuit
actuating part
coupling
foot
Prior art date
Application number
PCT/EP2021/076184
Other languages
German (de)
English (en)
Inventor
Georg Daniel
Thomas KLEFFEL
Benedikt Schmidt
Mario Demar
Johannes Jeger
Manuel WITTWER
Thomas Rauch
Original Assignee
Preh Gmbh
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 Preh Gmbh filed Critical Preh Gmbh
Priority to CN202180062055.3A priority Critical patent/CN116157768A/zh
Publication of WO2022069339A1 publication Critical patent/WO2022069339A1/fr

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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
    • G06F3/03—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
    • G06F3/039—Accessories therefor, e.g. mouse pads
    • 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
    • G06F3/0338—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of limited linear or angular displacement of an operating part of the device from a neutral position, e.g. isotonic or isometric joysticks
    • 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
    • G06F3/0362—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 1D translations or rotations of an operating part of the device, e.g. scroll wheels, sliders, knobs, rollers or belts

Definitions

  • the invention relates to a slide and/or rotary control, for example as an input device of a vehicle user interface, with a positioning device, a detection device, a foot and an actuating part movably mounted on the foot.
  • the detection device should be designed to detect a position or a change in position in order to assign a switching or control function of a vehicle component to this change in position by means of an associated evaluation unit.
  • Previously known input devices of this type regularly have actuating parts whose position and/or change in position is detected without contact.
  • a "pure” touchpad or a “pure” touchscreen increases operating safety and ease of use, since the operator is still used to conventional input devices with movably mounted operating parts and, on the other hand, operation without visual control and thus without being distracted from what is happening on the road by grasping the operating part and doing so ical feedback is feasible.
  • Previous approaches to this last principle made use of the capacitive touch detection available for touch detection, in that the actuating part arranged on a capacitive touchscreen or capacitive touchpad interacted with the respective measuring capacitance.
  • the invention relates to a slide and/or rotary controller, in particular for a vehicle user interface.
  • vehicle user interface within the meaning of the invention means a device for making control inputs relating to the vehicle or vehicle components.
  • the user also known as the operator, is understood to mean, among other things, the driver of the vehicle.
  • further input devices or components suitable for making manual entries are generally provided for visualizing states of the vehicle or the vehicle components within the framework of the vehicle-user interface.
  • the input device has a positioning surface.
  • the positioning area is the touch-sensitive input area of a touchpad or a touch screen.
  • a detection device is provided, which is preferably fixed to the positioning surface and is arranged, for example, on the side of the positioning surface facing away from the operator.
  • the term “touch pad” means display-free input devices with a touch-sensitive input surface, while a “touch screen” is intended to include such an input device in which a touch-sensitive input surface is combined with a display.
  • the positioning surface is usually arranged in the passenger compartment of the vehicle facing the operator on an interior paneling or the dashboard.
  • the input device also has a; evaluation unit which is electrically conductively connected to the detection unit.
  • the input device also has a base and an actuating part mounted on the base so that it can rotate and/or slide.
  • the foot can be positioned freely on the positioning surface, for example it can be releasably fixed, i.e. after the foot has been placed on the positioning surface, the foot of the slide and/or rotary control retains its position, even while an operator input is being made by manually adjusting the Operating part and without that a manual holding of the operating part is required.
  • releasable connecting means between the foot and the positioning surface such as overcomeable magnetically acting or vacuum-generating adhesives or adhesives, such as adhesives may be provided.
  • the base has a permanent magnet that interacts magnetically with a ferromagnetic or permanent-magnetic counterpart that is fixed to the positioning surface.
  • a position is understood, for example, as the intersection of a rotary axis of the rotary controller with the positioning surface, i.e. if a rotatably mounted on the base Operating part is provided.
  • the detection device has a transmission device for generating an electromagnetic alternating field by means of a transmission signal and a receiving device for receiving the emitted alternating field.
  • Transmitting device and receiving device do not have to and preferably do not differ structurally.
  • the use of a common antenna or coil array or even the electrode structure provided by the touchpad or the touch screen is conceivable.
  • An array of coils is preferably used together but in a selective sequence, in which, depending on the selective wiring, each coil has the function as a transmitting coil or receiving coil and is understood below as being used in pairs.
  • At least two electrical oscillating circuits are provided which are arranged in the alternating electromagnetic field and have at least one electrical oscillating circuit coil as the oscillating circuit element.
  • the oscillating circuits are fixed to the actuating part and designed to be inductively coupled to the alternating electromagnetic field in order to act as a position indicator.
  • the oscillating circuits move synchronously with the actuating part during its manual adjustment.
  • the oscillating circuit coil thus moves with its oscillating circuit coil cross section over the projection surface.
  • an imaginary coupling surface is defined, which results from perpendicular projection of the oscillating circuit coil cross section onto the positioning surface.
  • the location of the coupling surface on the positioning surface varies for each oscillating circuit with the displacement of the actuating part, even if the position of the foot is maintained during the displacement.
  • the oscillating circuits are preferably arranged in such a way that the coupling surface also "covers" a long distance over the possible adjustment path of the actuating part.
  • both coupling surfaces are arranged outside the axis of rotation of the rotary adjustment.
  • each oscillating circuit has an absorption characteristic that influences the respective received signal and is characteristic of the respective oscillating circuit with respect to the alternating electromagnetic field and/or each resonant circuit has an emission characteristic that influences the respective received signal and is characteristic of the respective resonant circuit due to a current induced in the resonant circuit.
  • the evaluation unit is designed based on at least the received signal, depending on the embodiment, both by the received signal and by the transmitted signal, thus due to the position-dependent absorption behavior of the oscillating circuits relating to the alternating electromagnetic field or a position-dependent radiation behavior of the oscillating circuits due to a current induced by the alternating electromagnetic field in the respective position of the coupling surface based on the transmitted signals and/or received signals received for each oscillating circuit. From this, the evaluation unit determines a position of the foot, such as the position of the axis of rotation, and ultimately the position of the actuating part, in order to output position information relating to the position of the actuating part.
  • the position information is determined in one embodiment based on a local power extraction and by comparing the local transmission and reception signals, which results from the local resonant circuit as a characteristic power extraction, which the resonant circuit corresponds to the original electromagnetic alternating field at the position relevant position withdraws.
  • the evaluation unit is thus able to carry out a switching and/or control function of a vehicle component as a function of the position information. For example, depending on the position of the actuating part, a temperature preselection of the climate control system of the vehicle is made.
  • the operator input can be carried out with less susceptibility to interference, for example in comparison to an operator input based on capacitive detection means.
  • the position-dependent absorption behavior and thus the position information is preferably obtained by comparing the received and transmitted signals, in particular by comparing their amplitude and/or their phase.
  • the resonant frequency of the resonant circuit is determined at least from the received signal.
  • the varying positions of the coupling surfaces during the adjustment and their detection makes it possible to precisely and reliably determine the adjustment path and the respective position of the actuating part without the additional detection of the position of the foot on the positioning surface being necessary. This enables the foot to be positioned freely, i.e. in any position, and a position detection relating to the position of the actuating part relative to the foot is ensured at any position of the foot.
  • the actuating part is not restricted with regard to its further mobility and degrees of freedom, so a pivotable mounting of the actuating part is preferably additionally provided.
  • a cardanic bearing or a ball and socket bearing is provided between the foot and the actuating part.
  • a sliding mobility combined with the rotary mobility is provided, in which the direction of the sliding mobility is perpendicular to the axis of rotation.
  • a push functionality can also be provided, in which the actuating part can be displaced in the direction of the positioning surface against a restoring force in order to enable a switching function.
  • the transmitting device is a transmitter array made up of coils that can be selectively acted upon by the transmission signal and/or the receiving device is a receiving array made up of coils that can be read out selectively.
  • the transmission array and/or the reception array is distributed over the positioning area. A spatially resolved position detection is thus made possible by selectively evaluating the received signals and/or transmitted signals belonging to individual coils
  • the coil cross-section of the coils projected perpendicularly onto the positioning surface each defines a projection surface, with the projection surfaces overlapping in pairs and in certain areas, i.e. two coils each define a cut surface from the associated projection surfaces, with the cut surface being a partial surface of both projection surfaces.
  • the projection surfaces resulting in each case as a vertical projection of the coil cross sections onto the positioning surface preferably each extend in strips along one of two extension directions, preferably at right angles to one another, over the positioning surface.
  • the direction of extent specifies the longitudinal direction, ie the direction of the greatest extent of the projection surface, which extends, for example, from one side of the positioning surface to the opposite side and thereby over the entire positioning surface.
  • the strip-shaped projection surfaces form two groups of projection surfaces, with the affiliation to one Group results from the common direction of extension.
  • the coils of each group are arranged such that immediately adjacent screens within each group overlap.
  • the projection surfaces are preferably formed uniformly within a group.
  • each projection surface of one group overlaps with several, preferably all, projection surfaces of the other group and; an overlapping area is defined in each case, and the resonant circuit coils are arranged on the actuating part in such a way that for every possible position of the foot on the positioning area and in all possible positions of the actuating part, the coupling surfaces overlap with at least one but not all of the overlapping surfaces.
  • an overlap of the respective coupling surface with a plurality of overlapping surfaces, but not with all of them is provided in all positions.
  • each position of the actuating part can be identified several times but clearly by at least one exclusion.
  • the amplitude ratios or phase shifts for each overlapping area are determined by controlling the coils defining the overlapping area, in order to determine the presence or absence of the resonant circuit or the coupling area in the relevant overlapping area for each overlapping area by comparison with a predetermined value or behavior detect.
  • the radiation characteristic that is individual for each resonant circuit results from digital coding, which is reflected in the received signal and results from the structure of the resonant circuit.
  • Each resonant circuit preferably has a characteristic frequency behavior of an amplitude ratio between the transmitted signal and received signal and/or a characteristic frequency behavior of a phase shift between the transmitted signal and received signal, which is referred to as resonance behavior.
  • resonance behavior a characteristic frequency behavior of an amplitude ratio between the transmitted signal and received signal and/or a characteristic frequency behavior of a phase shift between the transmitted signal and received signal.
  • resonance behavior As a result, each oscillating circuit and thus the local position of each oscillating circuit on the positioning surface can be identified and the reliability of the detection can be increased, since a previously known frequency-dependent influence by the turntable can be discriminated from other disturbing influences, such as liquid drops on the actuating part, based on the frequency behavior.
  • it is a sequence of mono-frequency signals of different frequencies, which are evaluated in their chronological sequence, or multi-frequency signals,
  • the evaluation unit is designed to use at least one received signal and one transmitted signal to determine a degree of coupling of the inductive coupling between the receiving device and at least one resonant circuit, preferably for all resonant circuits, in order to determine a displacement based on the degree of coupling of the actuating part in a direction perpendicular to the positioning surface and/or a tilting of the actuating part about an axis parallel to the positioning surface.
  • the degree of coupling results from a comparison of the signal strength of the received signal with a predetermined, previously known signal strength.
  • This sliding mobility in the direction perpendicular to the positioning surface is also referred to as push mobility.
  • the actuating part is mounted, for example, in such a way that it can be moved from a rest position against a restoring force from a rest position into a pressed position in the direction of the positioning surface in order to assign an additional switching function to this actuation.
  • the invention also relates to the use of the slide and/or rotary control in one of its previously described embodiments in a motor vehicle.
  • the invention also relates to a method for operating a slider and/or rotary controller, in particular a vehicle-user interface, with the following steps:
  • the slide and/or rotary controller which has a positioning surface, a foot and an actuating part mounted on the foot so that it can rotate and/or slide, a detection device and an evaluation unit electrically conductively connected to the detection device.
  • the detection device comprises a transmission device for generating an alternating electromagnetic field by means of a transmission signal and a receiving device for receiving the alternating electromagnetic field while generating a received signal.
  • the slide and/or rotary controller provided also has at least two electrical oscillating circuits fixed to the actuating part and arranged for inductive coupling with the alternating electromagnetic field as position transmitters, each having at least one oscillating circuit coil with an oscillating circuit coil cross section.
  • each oscillating circuit coil cross-section defines a coupling surface when projected perpendicularly onto the positioning surface, with the local position of the coupling surface on the positioning surface varying with an adjustment of the actuating part, and each oscillating circuit having an absorption characteristic that influences the respective received signal and is characteristic of the respective oscillating circuit with regard to the alternating electromagnetic field and/or each oscillating circuit has an emission characteristic that influences the respective received signal and is characteristic of the respective oscillating circuit due to a current induced in the oscillating circuit.
  • the respective position of the coupling surface and thus the position of the foot and the position of the actuating part are determined using the transmission signals specified for each resonant circuit and/or received signals by means of the evaluation unit.
  • At least one piece of position information relating to the position of the actuating part is output by the evaluation unit in order to be able to carry out a switching and/or control function depending on the position information.
  • the transmission device is a transmitter array made up of coils that can be selectively acted upon by the transmission signal and/or the receiving device is a receiving array of selectively readable coils.
  • the transmission array and/or the reception array is distributed over the positioning area. A spatially resolved position detection is thus made possible by selectively evaluating the received signals and/or transmitted signals belonging to individual coils.
  • the coil cross-section projected perpendicularly onto the positioning surface of the coils each defines a projection surface, with the projection surfaces overlapping in pairs and in regions, i.e. two coils each define a cut surface; from the associated projection areas, the intersection area being a partial area of both projection areas.
  • the projection surfaces resulting in each case as a vertical projection of the coil cross sections onto the positioning surface each extend in strips along one of two extension directions, preferably at right angles to one another, over the positioning surface.
  • the direction of extent specifies the longitudinal direction, ie the direction of the greatest extent of the projection surface, which; you, for example, from one side of the positioning surface to the opposite side and thereby extends over the entire positioning surface.
  • the strip-shaped projection surfaces form two groups of projection surfaces, with belonging to a group resulting from the common direction of extension. The coils of each group are arranged so that immediately adjacent screens within each group overlap.
  • each projection surface of one group overlaps with several, preferably all, projection surfaces of the other group, thereby defining an overlapping surface in each case, and the resonant circuit coils are arranged on the actuating part in such a way that for every possible position of the foot on the Positioning surface and in all possible positions of the actuating part overlap the coupling surfaces with at least one but not all overlapping surfaces.
  • an overlapping of the respective coupling surface with several overlapping surfaces, but not all is provided in all positions. As a result, each position of the actuating part can be clearly identified.
  • the amplitude ratios or phase shifts for each overlapping area are determined by controlling the coils that define the overlapping area, in order to determine the presence or absence of the resonant circuit or the coupling area in the relevant overlapping area for each overlapping area by comparison with a predetermined value or behavior detect.
  • each resonant circuit has a characteristic frequency behavior of an amplitude ratio between the transmitted signal and received signal and/or a characteristic frequency behavior of a phase shift between the transmitted signal and received signal, which is referred to as resonance behavior.
  • each oscillating circuit and thus the local position of each oscillating circuit on the positioning surface can be identified and the reliability of the detection can be increased, since a previously known frequency-dependent influence by the sliding and/or rotary actuator can be compensated for by other disturbing influences, such as liquid drops on the actuating part, based on the frequency behavior can be discriminated against.
  • it is a sequence of mono-frequency signals of different frequencies, in their temporal Sequence are evaluated or multi-frequency signals that are spectrally evaluated in order to achieve a frequency-dependent evaluation.
  • the evaluation unit is designed to use at least one received signal and one transmitted signal to determine a degree of coupling of the inductive coupling between the receiving device and at least one oscillating circuit, preferably for all oscillating circuits, in order to use the degree of coupling to detect a displacement of the actuating part in a Positioning perpendicular direction and / or to detect a tilting of the actuating part about an axis parallel to the positioning axis.
  • This sliding mobility in the direction perpendicular to the positioning surface is also referred to as push mobility.
  • the actuating part is mounted, for example, in such a way that it can be moved from a rest position against a restoring force from a rest position into a pressed position in order to assign an additional switching function to this actuation.
  • FIG. 1 shows a perspective view of the rotary control 1 according to the invention as part of a vehicle user interface, which is not shown comprehensively;
  • FIG. 2 shows a sketch to explain the inventive and relative arrangement of the coils of the detection device 5 and the oscillating circuit coils of the oscillating circuits 4 using an imaginary projection of the coil cross sections onto the positioning surface 6 from FIG. 1 provided for positioning the foot 3;
  • Fig. 3 shows a diagram to explain the progression of the degree of coupling k as a function of the normalized distance between the oscillating circuit coil and the detection device 5;
  • FIG. 4 shows a sectional view through the control knob 1 according to the invention from FIG.
  • FIG. 1 shows an embodiment of rotary and/or slide control 1 according to the invention, which is part of a vehicle-user interface.
  • the control dial 1 can be positioned on the positioning surface as desired by the foot 3 adhering to the positioning surface 6 .
  • the positioning surface 6 is, for example, the surface of a decorative panel or the touch-sensitive surface of a touchpad or touchscreen.
  • a surmountable adhesion between the foot 3 and the positioning surface 6 is achieved, for example, by magnetic interaction, while a manual rotary adjustment of the actuating part 2 about an axis of rotation A relative to the foot 3 is still possible.
  • the position of the foot 3 and thus the knob 1 is, for example; defined by the intersection of the axis of rotation A with the positioning surface 6.
  • the actuating part 2 has two resonant circuits 4 with a characteristic resonant frequency and each serve as a position sensor. Due to the fact that the foot 3 can be arranged in almost any way on the positioning surface 6, an additional detection of the position of the foot 3 and thus of the turntable 1 on the positioning surface 6 is actually required. To avoid an additional position detection step and associated detection calibration directions, the solution according to the invention sees an integration of this step in the position detection, ie by detecting the position of the actuating part 2 on its possible travel during the position detection.
  • Essential to the invention are the two electrical oscillating circuits 4 arranged in the electromagnetic alternating field of a detection device 5 to be explained in more detail below, which have at least one electrical oscillating circuit coil as the oscillating circuit element, for example an electrically short-circuited oscillating circuit coil.
  • the detection device 5 has a transmission device for generating an electromagnetic alternating field by means of a transmission signal and a receiving device for receiving the emitted alternating field.
  • the transmitting device and receiving device are not structurally different here, but share a common array of coils, which are explained in more detail with reference to FIG.
  • the resonant circuits 4 are fixed to the operating part 2 and formed with to inductively couple the electromagnetic alternating field of the detection device 5 in order to act as a position indicator.
  • the fact that it is fixed to the actuating part 2 results in a synchronous movement of the oscillating circuits 4 with the actuating part 2 during its manual adjustment.
  • the oscillating circuit coil of the respective oscillating circuit 4 thus moves with its oscillating circuit coil cross section over the projection surface 5.
  • an imaginary coupling surface 4a or 4b shown in Figure 2 is defined, which results from the vertical projection of the oscillating circuit coil cross section onto the positioning surface 6 .
  • the oscillating circuits 4 are to be arranged as far away as possible from a fixed point of the adjustment of the actuating part 2, in this case as far away as possible from the axis of rotation A .
  • the local position of the respective mutually spaced coupling surface 4a, 4b on the positioning surface 6 varies for each oscillating circuit 4 with the adjustment of the actuating part 2, even if the position of the foot 3 is maintained during the adjustment.
  • each oscillating circuit 4 has an absorption characteristic with respect to the electromagnetic alternating field that influences the respective received signal and is characteristic of the respective oscillating circuit 4, and/or each oscillating circuit has an emission characteristic that influences the respective received signal and is characteristic of the respective oscillating circuit 4 due to a current induced in the oscillating circuit 4 .
  • the evaluation unit 7, which is electrically conductively connected to the detection device 5, is designed based on at least the received signal, depending on the embodiment, both by the received signal and by the transmitted signal, i.e. based on the position-dependent absorption behavior of the oscillating circuits with regard to the alternating electromagnetic field or a position-dependent radiation behavior of the oscillating circuits 4 due to a means the current induced by the electromagnetic alternating field to determine the respective position of the coupling surface 4a, 4b on the basis of the transmitted signals and/or received signals received for each oscillating circuit 4.
  • the evaluation unit 7 determines a position A of the foot 3, here the position of the axis of rotation, and with the information obtained therefrom relating to the position A of the foot 3, the position, in this case the angular position of the operating part 2, is determined in order to output position information relating to the position of the operating part 2.
  • the position information is determined in one embodiment based on a local power extraction and by comparing the local transmission and reception signals, which results from the locally present oscillating circuit 4 as a characteristic power extraction, which the oscillating circuit 4 corresponds to the original electromagnetic alternating field at the position corresponding position revoked.
  • the evaluation unit is thus able to carry out a switching and/or control function of a vehicle component depending on the position information.
  • the position-dependent absorption behavior and thus the position information can also be obtained by comparing received and transmitted signals, in particular by comparing their amplitude and/or their phase.
  • the respective oscillating circuit 4 is identified at least from the received signal using the resonant frequency, while the array of coils of the detection device 5 enables spatial resolution with respect to the projection surface 6 .
  • the transmitting device is a transmitter array made up of coils XI to X3, Y1 to Y3 and the coils which can be selectively acted upon by the transmission signal
  • Receiving device a receiving array of selectively readable coils XI to X3, Y1 to Y3.
  • the coils XI to X3, Y1 to Y3 are distributed over the positioning surface 6 along two orthogonal directions x, y. A spatially resolved position detection is thus made possible by selectively evaluating the received signals and/or transmitted signals belonging to individual coils.
  • the coils XI to X3, Y1 to Y3 have only one or only a few loops and are integrated, for example, in a layer structure, for example a film layer structure or a multilayer printed circuit board, which is arranged under the positioning surface 6 as viewed from the operator B and is fixed to the positioning surface 6.
  • the coil cross section of the coils XI to X3, Y1 to Y3 projected perpendicularly onto the positioning surface 6 defines a projection surface P(X2) and P(Y3), which are identified by hatching in FIG. 2 for the coils X2 and Y3 by way of example.
  • the projection surfaces P(X2) and P(Y3) overlap in pairs and only in certain areas, i.e. two coils each define a cut surface, referred to as the overlap surface U(X2/Y3), from the associated projection surfaces P(X2) and P(Y3), which is a partial area of both projection areas P(X2) and P(Y3).
  • one coil X2 or Y3 of the pair of coils X2, Y3 with overlapping projection surfaces P(X2) and P(Y3) is used as a receiving coil
  • the other Y3 or X2 of the pair is used as a transmitting coil, in order to determine a position of the position transmitter positively and with spatial resolution in the area of the overlapping area U(X2/Y3) if the coupling area 4a or 4b overlaps with the associated overlapping area U(X2/Y3).
  • the projection surfaces P(X2), P(Y3) resulting as a vertical projection of the coil cross sections XI to X3, Y1 to Y3 onto the positioning surface 6 each extend in strips along one of two directions of extent x, preferably at right angles to one another , y over the positioning surface 6.
  • the extension direction x or y specifies the longitudinal direction, i.e. the direction of the greatest extension of the projection surface 6, which extends, for example, from one side of the positioning surface 6 to the opposite side and thereby over the entire positioning surface 6.
  • the periodicity of the coil spacing is a fraction of width of a coil loop determined perpendicularly to the direction of extent x or y.
  • the strip-shaped projection surfaces P(X1) to P(X3) or P(Y1) to P(Y3) form two groups of projection surfaces, with the affiliation to a group P(X1) to P(X3) or P( Y1) to P(Y3) results from the common extension direction x or y.
  • the coils of each group are arranged in such a way that immediately adjacent projection surfaces P(X1) to P(X3) or P(Y1) to P(Y3) within each group overlap.
  • the projection surfaces P(X1) to P(X3) or P(Y1) to P(Y3) are formed uniformly within a group.
  • each projection surface P(X1) to P(X3) of one group overlaps with several, preferably all, projection surfaces P(Y1) to P(Y3) of the other group and in each case an overlap surface U(X... /Y).
  • the oscillating circuit coils of the oscillating circuits 4 are arranged on the actuating part 2 in such a way that for every possible position of the foot 2 on the positioning surface 6 and in all possible positions of the actuating part 2, the coupling surfaces 4a, 4b each have at least one but do not overlap all overlap areas U( X.../Y).
  • an overlapping of the respective coupling surface with several overlapping surfaces U(X.../Y...) is provided in all positions, but not all of them.
  • each position of the actuating part 2 can be clearly identified.
  • the amplitude ratios or phase shifts for each overlapping area are determined by activating the coils forming the overlapping area, in order to determine the presence or non-existence of each overlapping area U(X.../Y%) by comparing it with a predetermined value or behavior.
  • each resonant circuit 4 has a characteristic frequency behavior of an amplitude ratio between the transmitted signal and received signal and/or a characteristic frequency behavior of a phase shift between the transmitted signal and received signal, which is referred to as resonance behavior.
  • resonance behavior a characteristic frequency behavior of an amplitude ratio between the transmitted signal and received signal and/or a characteristic frequency behavior of a phase shift between the transmitted signal and received signal.
  • each resonant circuit 4 and thus the local position of each resonant circuit 4 with respect to the positioning surface 6 and thus its vertical Projection, i.e. the coupling surface 4a, 4b, can be identified on the positioning surface 6 and the reliability of the detection can be increased, since a previously known frequency-dependent influence by the oscillating circuits 4 on the position sensor of the rotary actuator 1 can be prevented from other disturbing influences, such as liquid drops on the actuating part 2, based on the Frequency behavior can be discriminated.
  • the transmission signal is a sequence of mono-frequency signals of different frequencies, which are evaluated in their chronological order, or
  • the evaluation unit is also designed to use at least one received signal and one transmitted signal to determine a coupling measure k, also known as the coupling factor, of the inductive coupling between the receiving device and at least one resonant circuit 4, preferably for all resonant circuits, in order to use the coupling measure to determine a displacement of the actuating part 2 in a to detect the positioning surface 6 perpendicular direction.
  • the current through the coils XI to X3 and Y1 to Y3 shown in Fig. 2 generates the magnetic flux #1, of which the portion #2 ⁇ #1 penetrates the second coil and induces a voltage therein;.
  • the magnetic coupling between the coils is described by the ratio of the magnetic fluxes #2 / #1.
  • the coupling factor depends heavily on the offset of the coils in the x, y and z directions.
  • a family of curves results, for example, as in FIG.
  • the individual curves correspond to different vertical distances between the coils and the oscillating circuits 4, more precisely their oscillating circuit coils.
  • the family of curves is stored, for example, as a characteristic diagram within the evaluation unit. With the help of this map and the received signals for the two resonant circuits 4, their location in 3D and the angle of the turntable in space can be determined in principle.
  • the characteristic map is first used to evaluate whether the turntable 1 has been on the positioning surface for a minimum time; for example, if for t>100 ms both the received signal of the first oscillating circuit 4 and the received signal of the second oscillating circuit 4 are greater than a respective one threshold and/or when the ratio of the two signals is a certain ratio.
  • an intermediate check is also carried out in one embodiment to determine whether the localization of the oscillating circuits 4 is plausible and the distance between the oscillating circuit coils of the oscillating circuits 4 and the receiving coils XI to X3, Y1 to Y3 corresponds to the dimension specified by the mechanical construction. which is done by determining the coupling measure k.
  • the location determination is preferably carried out with a frequency of 100 Hz or higher. This high speed is necessary in particular in connection with the use of a rotary detent haptic, also referred to as detent haptic for short, in order to achieve synchronicity between the haptic and the function triggering.
  • a start position evaluation relating to the rotation position is initially initialized. If a specific angle of rotation defined by the mechanical detent is reached and detected, a function is triggered. If the actuating part 2 of the turntable 1 rests in this detent position for a specific time, a new initial position is determined. In this way, slight errors can be corrected, e.g. caused by slippage between foot 3 and positioning surface 6.
  • the transmission signals ie the excitation frequencies
  • the transmission signals are to be matched to the natural frequencies w1 and w2 of the oscillating circuits 4 as precisely as possible. In known operating elements, this is achieved by soldering on correction capacitors during production. Firstly, this is very complex and secondly, it is only suitable for use within a small temperature range, since the natural frequency of the oscillating circuit 4 is temperature-dependent (eg temperature-dependent capacitance of the capacitor belonging to the oscillating circuit). Provision is therefore made for the excitation frequencies to be matched to the resonant circuits 4 in each case by means of a baselining method. This means that the detection device 5 is able to vary the excitation frequency within a specific window, so that the resonance of the respective oscillating circuit 4 is maximized.
  • this baselining method is always carried out when the transmission signal is applied.
  • the turntable 1 can optionally have a push function.
  • the oscillating circuits 4 are attached in such a way that, when an axial force acts on the actuating part 2 of the turntable 1, they are displaced in the direction of the positioning surface 6 against a restoring force.
  • the detection device 5 recognizes the presence of a "press" by an operator with the aid of the family of curves shown in Figure 3, e.g. by exceeding a specific signal strength and thus by exceeding a predetermined coupling measure k; optionally, a specific minimum ratio of the signal strengths of the received signals of the both resonant circuits 4 are required.
  • an additional switching element can be integrated in at least one of the oscillating circuits 4, by means of which the natural frequency of at least one of the two oscillating circuits 4 can be varied.
  • the coils XI to X3; Y1 to Y3 of the transmitting device are additionally subjected to a third frequency w3 and evaluated by means of the receiving device for a corresponding response function of the oscillating circuits 4.
  • FIG. 4 shows a section through the embodiment of the turntable 1 according to the invention from FIG. 1 with latching haptics.
  • the actuating part 2 is rotatably mounted on the foot 3 about an axis of rotation A.
  • the foot 3 can be placed anywhere on the positioning surface 6 , the position A of the foot 3 on the positioning surface 6 being defined by the intersection of the axis of rotation A with the positioning surface 6 .
  • a permanent magnet is provided in the foot, which magnetically interacts with a ferromagnetic or permanent-magnetic counterpart provided on the side of the positioning surface 6 .
  • an adhesive connection or a suction or vacuum connection can be provided between the foot 3 and the positioning surface 6 .
  • the actuating part 2 and the foot 3 are ring-shaped and have a central opening 13 to allow a view of the underlying area of the positioning surface 6, which is, for example, the touch-sensitive input and display surface of a touch screen.
  • the rotary actuator 1 also has a roller bearing 11 in order to enable the operating part 2 to be mounted so that it can rotate relative to the foot 3 .
  • a latching mechanism 10 is provided with latching engagement between a latching lug and a latching contour in order to produce a latching feel that can be felt when rotating the actuating part 2 .
  • the printed circuit board 12 is fixed to the operating part 2 and carries the oscillating circuit 4 , which serves as a position sensor for detecting the rotational position of the operating part 2 but also for detecting the position A of the foot 3 on the positioning surface 6 .
  • the oscillating circuits 4 which have different resonant frequencies, each have an oscillating circuit coil whose oscillating circuit coil cross section faces the positioning surface 6 .
  • the detection device 5 is provided for detecting the rotational position including position A of the foot 3, which uses the same coil array made up of selectively controllable coils XI to X3, Y1 to Y3 as a transmission device with selective application of a transmission signal and as a reception device with selective readout of a reception signal.

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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)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

L'invention concerne une commande coulissante et/ou rotative (1), plus particulièrement une interface véhicule-opérateur, comprenant une surface de positionnement (6) ; une base (3) qui peut être positionnée librement sur la surface de positionnement (6) à une position (A) ; une partie d'actionnement (2) montée de manière rotative et/ou coulissante sur la base (3), afin de permettre à la partie d'actionnement (2) d'être déplacée manuellement par rapport à la surface de positionnement (6) tandis que la position (A) de la base (3) est maintenue ; un dispositif de détection (5), qui comporte un dispositif de transmission destiné à produire un champ électromagnétique alternatif au moyen d'un signal de transmission et un dispositif de réception destiné à recevoir le champ électromagnétique alternatif, un signal de réception étant ainsi produit ; et une unité d'évaluation (7) qui est électriquement connectée au dispositif de détection (5) ; au moins deux circuits oscillants électriques (4), qui sont fixés à la partie d'actionnement (2) et sont situés pour un couplage inductif au champ électromagnétique alternatif, étant prévus en tant qu'indicateurs de position, les circuits oscillants ayant chacun au moins une bobine de circuit oscillant ayant une section transversale de bobine de circuit oscillant qui, dans une projection perpendiculaire sur la surface de positionnement, définit une zone de couplage (4a, 4b) et fait varier l'emplacement spatial de la zone de couplage (4a, 4b) sur la surface de positionnement (6) lorsque la partie d'actionnement (2) est déplacée ; chaque circuit oscillant (4) présentant une caractéristique d'absorption par rapport au champ électromagnétique alternatif, laquelle caractéristique d'absorption influençant le signal de réception en question et étant caractéristique du circuit oscillant (4) en question, et/ou chaque circuit oscillant (4) présentant une caractéristique d'émission résultant d'un courant induit dans le circuit oscillant (4), laquelle caractéristique d'émission influençant le signal de réception en question et étant caractéristique du circuit oscillant (4) en question ; et l'unité d'évaluation (7) étant configurée pour déterminer l'emplacement de la zone de couplage (4a, 4b) et ainsi la position de la base (3) et la position de la partie d'actionnement (2), sur la base des signaux de transmission spécifiés ou des signaux de réception obtenus pour chaque circuit oscillant (4), et pour délivrer en sortie au moins des informations de position concernant la position de la partie d'actionnement (2) de telle sorte qu'une fonction de commutation et/ou de commande peut être exécutée conformément aux informations de position.
PCT/EP2021/076184 2020-09-30 2021-09-23 Commande coulissante et/ou rotative pouvant être positionnée librement sur une surface de positionnement et dotée d'une partie d'actionnement mobile et ayant une influence sur le champ électromagnétique alternatif pour la détermination d'informations de position WO2022069339A1 (fr)

Priority Applications (1)

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CN202180062055.3A CN116157768A (zh) 2020-09-30 2021-09-23 用于测定位置信息的滑动和/或旋转调节器

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DE102020125576.4 2020-09-30
DE102020125576.4A DE102020125576A1 (de) 2020-09-30 2020-09-30 Wahlfrei auf einer Positionierfläche positionierbarer Schiebe- und/oder Drehregler mit beweglichem Betätigungsteil und elektromagnetischer Wechselfeldbeeinflussung zur Ermittlung einer Stellungsinformation

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WO2022069339A1 true WO2022069339A1 (fr) 2022-04-07

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Citations (4)

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US20020036622A1 (en) * 2000-09-26 2002-03-28 Denny Jaeger Method and apparatus for detecting actuation of a controller device on a touch screen
US20060256090A1 (en) * 2005-05-12 2006-11-16 Apple Computer, Inc. Mechanical overlay
US20190310718A1 (en) * 2018-04-06 2019-10-10 Flex Ltd. Method for detecting events on a touch screen using mechanical input
US10705629B1 (en) * 2016-08-03 2020-07-07 Apple Inc. Customizable control system

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US5936613A (en) 1993-11-05 1999-08-10 Intertactile Technologies Corporation Rotary circuit control devices with changeable graphics
US10082889B2 (en) 2011-10-28 2018-09-25 Atmel Corporation Multi-electrode active stylus tip
KR101995403B1 (ko) 2012-09-14 2019-07-02 삼성전자 주식회사 스타일러스 펜, 이를 이용한 입력 처리 방법 및 그 전자 장치
CN103941913B (zh) 2014-03-28 2016-10-05 上海天马微电子有限公司 电感触摸屏及其驱动检测方法、坐标输入装置

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US20020036622A1 (en) * 2000-09-26 2002-03-28 Denny Jaeger Method and apparatus for detecting actuation of a controller device on a touch screen
US20060256090A1 (en) * 2005-05-12 2006-11-16 Apple Computer, Inc. Mechanical overlay
US10705629B1 (en) * 2016-08-03 2020-07-07 Apple Inc. Customizable control system
US20190310718A1 (en) * 2018-04-06 2019-10-10 Flex Ltd. Method for detecting events on a touch screen using mechanical input

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DE102020125576A1 (de) 2022-03-31

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