EP2550581A1 - Input apparatus with haptic feedback - Google Patents

Input apparatus with haptic feedback

Info

Publication number
EP2550581A1
EP2550581A1 EP11711037A EP11711037A EP2550581A1 EP 2550581 A1 EP2550581 A1 EP 2550581A1 EP 11711037 A EP11711037 A EP 11711037A EP 11711037 A EP11711037 A EP 11711037A EP 2550581 A1 EP2550581 A1 EP 2550581A1
Authority
EP
European Patent Office
Prior art keywords
input device
characterized
device according
magnet
coils
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP11711037A
Other languages
German (de)
French (fr)
Inventor
Ferdinand Maier
Thomas Fischer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FM Marketing GmbH
Original Assignee
FM Marketing 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
Priority to DE201010012247 priority Critical patent/DE102010012247A1/en
Priority to DE201010019596 priority patent/DE102010019596A1/en
Application filed by FM Marketing GmbH filed Critical FM Marketing GmbH
Priority to PCT/EP2011/001410 priority patent/WO2011116929A1/en
Publication of EP2550581A1 publication Critical patent/EP2550581A1/en
Application status is Pending legal-status Critical

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03548Sliders, in which the moving part moves in a plane
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0362Pointing 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
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K17/00Electronic switching or gating, i.e. not by contact-making or -braking
    • H03K17/94Electronic switching or gating, i.e. not by contact-making or -braking characterised by the way in which the control signal is generated
    • H03K17/965Switches controlled by moving an element forming part of the switch
    • H03K17/97Switches controlled by moving an element forming part of the switch using a magnetic movable element

Abstract

The input device has a printed circuit board (5) to which a plurality of coils (L1-L8) have been fitted which, together with a capacitor (C2), each form a frequency-determining element of an oscillator (1). The coils (L1-L8) are arranged so as to be distributed along a path (K), which may also be a circular path. A moving magnet portion (M) can be displaced relative to the printed circuit board (5). At least one further stationary magnet portion (M1-M8) is mounted on the printed circuit board (5), which is opposite the moving magnet portion (M).

Description

Input device with haptic feedback

Field of the Invention

The invention relates to an input device with haptic feedback.

Background of the Invention

Many devices or objects of daily life are now operated by input devices such as electrical switches, control lever, touch screens (touch screen), sliders, keyboards and the like, in which a feedback on other sensory organs occurs as the input. For example, if a cursor on a screen are controlled by a so-called. Mouse, then the input is made by manually moving the mouse while the feedback is carried out visually by viewing the screen. If the volume of a radio advertising changes the, is held in many devices today only one button, the duration of pressing the button determines the amount of volume change. Here, the feedback is audible. It is desirable to direct haptic

to obtain tactile feedback when input, wherein the tactile input (force, distance, direction) is haptically perceptible directly and not only through a contingent

CONFIRMATION COPY TULLE time-delayed system takes place, such as through a not directly standing in connection with the input signal. For this magnetically positioned input organs are.

EP 1223541 Bl describes an input device in the form of a remote control in which is moved to the control egg nes cursor on a display screen a movable adjustable part having a first fixed thereto magnet relative to a second stationary magnet and Hall-sensors, the resulting magnetic field is measured, from which the posi- tion can be determined of the movable adjustable part. By the interaction of the two magnets, the adjustable member is brought in the absence of an external force in a predetermined position. Only by an external force, for instance by egg NEN finger of an operator, the adjustable

Part to be moved from this rest position, the force that is necessary to move, depending on the position of the magnets to each other, so that the user receives a tactile or haptically perceptible rear avoidance.

It may also be a third stationary magnetic be provided so that the adjustable part can be moved between two resting positions, wherein the moving of the two rest positions in each case requires an external force. Other examples of input devices with magnets are known from the following documents:

DE 10117956 B4, DE 102005018275 Al,

DE 102007002189 Al, DE 202005019271 Ul,

EP 0810544 A2, EP 1901005 A2,

JP 06318134 A, JP 2005004365 A,

US 5504502 A, US 7187360 B2,

US 7489296 B2, US 2002/0054012 Al,

US 2002/0125977 Al, US 2004/0252104 Al,

US 2005/0068134 Al, US 2006/0209019 Al,

WO 03/054782 Al, WO 2006/130723 A2,

WO 2006/131520 Al and WO 2008/016386 A2.

Most of the above mentioned documents use Hall sensors that measure the magnetic flux density, resulting in a signal for the position of the movable magnet can be derived.

WO 00/70438 points out that Hall sensors are relatively expensive and can only measure the magnetic flux density such that at least two Hall sensors are required for detecting a moving direction of a magnet. Therefore, this document proposes to use as sensors coils. A magnetic rela- tively to the coil moves, so in the coil a e- lectrical voltage is induced, whereby a voltage pulse can also detect the direction of movement, since the voltage pulse starts depending on the direction of movement with a rising or falling edge. A disadvantage of this device, however, is that only a movement can be detected and not a static condition. The US 5,698,976 A discloses an input device having a plate of magnetic material, however, the surface of which in the X- and Y-direction regular different geometric configuration in the form of pits and lands has. A magnet is displaceable relative to this plate and a sensor in the form of a coil is moved together with the magnet. Due to the different geometry of the surface of the disk, the magnetic flux which is detected by the coil changes.

Summary of the Invention

The object of the invention is to improve the device of the type mentioned in that it provides an accurate electrical signal for the movement and / or position of the magnetic movable input member at a low cost and at the same time provides a haptically perceptible feedback. Preferably, the haptic feedback perceived to be adjustable. Preferably also rotational movements should be detectable.

This object is achieved by it, the stated in the patent claim 1. Advantageous embodiments and developments of the invention are disclosed in the subclaims.

The basic principle of the invention is, reindeer as sen- on a wiring board using printed coils whose inductance inductive part of a / - is capacitive resonant circuit. The value of the inductance changes depending on the relative position of a magnetic member to the coil or the coils, so that the oscillation frequency of the resonant circuit in dependence on the position of the magnetic member changes. In this way one obtains on the one hand, a static signal that can be at any time the position of the magnetic member relative to the or evaluate the coils, as well as the speed of movement of the magnet part due to the change of the oscillation frequency. It should be noted that the terms magnet and counter-magnet to be understood that both the two parts can be magnetized and therefore each form a permanent magnet, and the case that only one of them a Permanentmag-'s net, while the other ferromagnetic but not permanently magnetized material. Therefore, speaking more generally of "magnet part" or "magnet parts". Instead of permanent magnets, electromagnets can also be used.

For the arrangement of the magnetic parts and the coil, the invention provides different variants. In one embodiment, a movable magnet on a side of the conductor track plate is arranged, while one or more stationary magnets on the opposite side of the circuit board are arranged. but it is also an array of all the magnets on one side of the wiring board possible. As movable magnets are disc magnets, annular, spherical or cylindrical magnets in question, whereby a ball can be inserted to reduce the friction of the moving magnet in this projecting only slightly beyond the underside of the magnet, so that no appreciable tilting of the magnet occurs.

As stationary magnet also the mentioned forms of magnets are possible, such as disc magnets as well as a ring magnet, a ring magnet with the magnetic means as well as a plurality of spaced in predetermined patterns magnets. To adjust the perceptible tactile feedback also electromagnets may be used whose excitation current is regulated, whereby the lektromagneten between the E- and the moving magnet forces are adjustable.

The serving as a sensor coils can be applied in various patterns on the wiring board, and for example, printed or produced by Lithograhie or other known methods, wherein a plurality of coils in different patterns, such as a matrix can be applied which are connected in rows and columns with each other are.

By arranging several magnets different screen positions are created, whereby for example different menu levels can be called or different operating functions.

The invention is suitable for all applications in which functions are to be controlled by movement of a control organ, such as remote controls, mouse replacement for computers, operating functions in motor vehicles and operation of all conceivable electrically controllable machines.

A signal transmission from the input device to devices to be controlled can be done by infrared, cable, radio, ultrasound.

It is desirable to not only detect linear motion in a plane with a haptic feedback but also rotational movements.

Therefore, according to a development of the invention, at least some of the sensors are arranged along a circular path, and preferably at equidistant intervals, each other. Also along the circular path are fixed counter-magnets or ferromagnetic metal parts arranged in cooperation with the along the orbit which provide moving magnet for the haptic feedback and define "locking positions" for a rotatable operating member to which the movable magnet is fixed.

By arranging several fixed or movable magnet parts different Rasterposi- be created functions, whereby for example different menu levels can be accessed or different operating functions.

Brief Description of Drawings

Further details and advantages of the invention will become apparent from the following description of various embodiments of the invention, which are explained in conjunction with the drawings in more detail. It shows:

Fig l. a circuit diagram of the device according to the invention according to a first embodiment;

Fig. 2 is a circuit diagram according to a second exporting

approximately of the invention;

Fig. 3 dung a plan view of an input device according to an embodiment of the inventions;

Fig. 4 shows a section along the line AA of Fig.

3; Fig. 5

to 10 are schematic diagrams showing different arrangements of magnets can be used in the invention; Figure 11 is a plan view of an array of coils used in the invention according to one embodiment of the invention.

Fig. 12 is a view similar to Figure 11 after a soft direct embodiment of the invention. Fig. 13

to 15 are schematic views of the arrangement of

Coils that may be used in the invention.

Figure 16 is a circuit diagram of the input device according to a first embodiment of the invention. FIG. 17 is a cut away plan view of an input device according to one exemplary embodiment of the invention play;

Figure 18 is a plan view of a wiring board according to the embodiment of Fig. 17.; and

Figure 19 is a cross-section of the input device according to another embodiment of the invention.

FIG. 20 is a circuit diagram of the input device according to another embodiment of the invention;

Fig. 21 is a circuit diagram of the input device according to another embodiment of the invention. FIG. 22 is a cross-section of the input device according to another embodiment of the invention taken along the line BB of Fig. 23; and FIG. 23 is a view along the line AA of Fig. 22 of the input device.

Detailed description of preferred embodiments of the invention

In the diagram of Fig. 1, eight rows of series-connected inductances are seen LI to L32, each single inductor shown is a coil which serves as a sensor for the position of a magnet M. The rows of inductors LI to L16 are CONNECTED to a first multiplexer MUX1 sen and the rows of the inductors L17 to L32 to a second multiplexer MUX2. The multiplexers MUX1 and MUX2 are activated by a microprocessor μΡ consecutively via enable inputs EN2 and ENI, wherein selected via address lines A0, Al and A2, respectively mono- zelne inputs of the multiplexers and are connected through their respective outputs OUT1 and OUT2. The outputs OUT1 and OUT2 of the multiplexers MUX1 and MUX2 are supplied to an oscillator 1, which is constructed here as follows:

An operational amplifier VI is lying with its positive input (+) to an intermediate power supply voltage + Vcc and ground (GND) voltage divider comprising resistors Rl and connected R2, wherein the common connection point of the resistors Rl and R2 via a first capacitor Cl to the two outputs OUTL and OUT2 of the two multiplexers MUX1 and MUX2 is connected. This connection point is connected via a two-th capacitor C2 to ground. Further, the positive input of the position VI amplifier via a feedback capacitor C3 is connected to the output of the operational amplifier VI. The negative input gear of the operational amplifier is connected via a resistor R3 to the output of the operational amplifier and VI via a capacitor C4 to ground.

In each case switched through input of the multi-plexer are thus the selected row of inductors LI to L32 and the capacitor C2 connected in parallel between ground and the positive input of the operational amplifier VI, thereby forming an LC element of a completed by the operational amplifier resonant circuit or oscillator , this LC element is connected via the coupling capacitor Cl to the positive input of the operational amplifier VI.

At the output OUT3 of the operational amplifier VI thus a signal whose frequency depends on a function of the respective values ​​of the LC element appears. The inductance of the rows of inductors LI to L32 is a accommodated in the proximity of the inductor coils forming metal part, such as a magnet M changed, so that as a result the frequency of the output at the output OUT3 signal from the relative position between a magnet M and the coil LI to L32 depends. The output signal at the output OÜT3 is supplied to the microprocessor μΡ, where it is evaluated and output according to the application as a control signal at an output OUT4. The output OUT4 of the microprocessor μΡ can be a serial or parallel digital output or an analog output which is supplied depending on the purpose driver circuits 2 and / or actuators 3 and possibly also a display. 4

The microprocessor μΡ can evaluate both the frequency and the time change of frequency, and thus not only output a signal to L32 indicates the relative position of the magnet M to the individual coils LI but also its speed of movement. In response to the movement speed, the display can on the display delayed or ready to be accelerated, which has the additional interesting effect that the subjective perception of the user with respect to the haptic feed- back of the force of the magnet by the rate of change of representation changed on the display is , It has been found that the haptic-specific perception is influenced by an additional visual representation. This function is realized by software in the microprocessor.

The circuit of Fig. 2 from that of Fig. 1 differs in that three multiplexers MUX1, MUX2 and are connected to the microprocessor μΡ MUX3, that the operational amplifier VI of the oscillator 1 is integrated into the microprocessor μΡ that at the output the microprocessor connected modules are omitted and that finally the multiplexer gear in each case only an inductance at each input is connected.

The multiplexer MUX1 is here 1/8-multiplexer currency rend the multiplexers MUX2 and MUX3 fourth multiplexers. Of course, other types of multi plexern are possible. Accordingly, the multiplexer MUX1 also needs an address line over the multiplexers MUX2 and MUX 3. The external connection of the integrated in the microprocessor operational amplifier with the resistors Rl to R3 and capacitors Cl to C4 corresponds to FIG. 1. In addition, the microprocessor μΡ has another sensor input via a capacitor C5 to the outputs OUT1, OUT2 and OUT3 the multiplexer is connected. This capacitor C5 is designed to provide an oscillation of the oscillator sure when switching the multiplexer.

In connection with Figs. 1 and 2 is to be noted that the number of inductors as well as the number of multiplexers can be selected arbitrarily and is respectively adapted to the intended application.

FIGS. 3 and 4 show an embodiment of an input device with a wiring board 5, on the upper side of the coil, not shown, 6 are printed. This page is called the top of the sixth three permanent magnets 8, 9 and 10 are here mounted on the opposite underside 7, examples of play adhered. At the top side 6, a movable operating part 11 is arranged with a further permanent magnet 12 in a slotted guide 13 movably, wherein the guide slot 13 is formed by corresponding recesses in a plate 14 which also forms a termination of a housing 15, in which the conductor track plate 5 is inserted. The control unit 11 has, on the side facing the wiring board 5 side of an annular protrusion 16 whose diameter is larger than the opening width of the slotted guide 13, so that the operating part 11 is secured together with the magnets 12 from falling out. The three magnets 8, 9 and 10 are here arranged along a straight line 17 and thus define three rest positions for the movable magnet 12, which is shown here in the rest position at the central permanent magnet. 9 From the respective resting position, the magnet may be moved 18, 19 or 20 12 in both the X-direction along the line 17 as well as in a direction perpendicular to the Y direction along lines.

In Fig. 3, a plurality are on the wiring board 5 up printed coil LI to L20 shown as dashed line rectangles indicated, which are connected in a circuit according to Fig. 1 or 2. The operating part 11 with the magnet 12 may be displaced along the sliding guide 13 in which the formwork then processing the exact position of the magnet determines.

With a device according to FIGS. 3 and 4, a plurality of devices can be controlled. If the displaceable magnet 12 to the rest position when one of the magnets 8, 9 or 10 shifted, so can thereby, for example, a particular sub-menu to be called, such as the control of the window of a

what is described in connection with the line 19 motor vehicle. If the magnet is shifted from the 12 in Fig. 3 position shown by "left", so the inductance is adjusted L8 and selected the left window. If the magnet 12 after shifted "right" ben inductor L9 is adjusted and selected the right window. Shifting "up" adjusts the inductors L10 and / or LH what "close window" as an instruction is interpreted, the location of the magnet in the direction of line 19 and its displacement with respect to the magnet 9 determines the speed of closing of the window. In an analogous manner, a displacement of the magnet leads along line 19 to the "down" to the inductors L12 and L13, which causes a corresponding faster or slower closing of the window. The same applies with respect to the other positions of the magnet of the coil LI through L7 and L15 to L21.

The sliding guide along the line 18 may beispiels- the temperature control for the left and right side of the vehicle as to be assigned and the line 20, the electrical adjustment of the right and left mirrors. Due to the magnetic forces are at each selected function immediately obtains the desired haptic feedback. Of course, other arrangements of slotted guides are possible. A particularly simple variant would be a simple cross with the X and Y directions so you can move through a matrixförmi- ges menu box on a display. Figs. 5 to 10 show different arrangements of the magnets. In the simplest case of FIG. 5, a disk-shaped permanent magnet is attached to the underside 7 of the wiring board 5 8, while the movable Liehe Magnet 12 is also disk-shaped. It can be moved freely along the upper surface 6 of the wiring board. 5 The two magnets 8 and 9 are axially magnetically tisiert, ie, which is indicated by dashed magnetic field lines in the direction perpendicular to the wiring board 5 axis 21st

In FIG. 6, the movable magnet 12 is a cylindrical bar magnet 11 can roll in the direction of the arrows on the top 6 of wiring board 5 upon displacement of the control unit. The magnet 12 is magnetized in its axial direction. The magnetization direction of the fixed magnet 8 is then also parallel to the axis of the magnet 12 aligned.

In the embodiment of Fig. 7, the stationary magnet 8 is an electromagnet, which is controlled by the microprocessor of Fig. 1 and 2, possibly via a further driving circuit, whereby the force to the shift in the movable permanent magnet 12 is changed, so that the tactile perceivable feedback is adjustable, be it to the particular application or to individual operators, which also adaptive learning system can be realized.

In Fig. 8, two fixed magnets at the bottom 7 of the wiring board 5 are provided, namely an annular magnet 8 in the center of a disk-shaped magnet 9 is arranged.

In the embodiment of FIG. 9, the wiring board 5 are also mounted two magnets 8 and 9 on the underside 7 which are here disk-shaped and thus two possible rest positions for the movable magnet 12 (and 12 ') define. The embodiment of Fig. 10 shows a variant in which the moving magnet 12 has a central recess into which a ball 22 is inserted, which on the upper side 6 of the conductor track plate protrudes slightly 5 opposed underside surface of the magnet 12 to a displacement of the to facilitate magnet 12th The air gap between the magnet 12 and the upper side 6 of wiring board 5 is so small that a tilting of the magnet does not affect the measurement result.

FIGS. 11 and 12 show arrangements of coil LI to L32, which are applied to the upper side 6 of the conductor track plate 5. The coils of FIG. 11 correspond to inductances LI to L32 of FIG. 1. They are row and column fashion one behind the other in each case connected in series. Thus, for example, form the coil LI, L2, L3 and L4, the coils of a first line ZI, while the coils, the coils L8 form a first column L5, L6, L7 and Sl. The electrical connection of the coil takes place via through-contacts on the underside of the wiring board. The corresponding line connections are shown by thicker lines. The respective movable magnet is moved over the structure formed by the matrix of the coil surface, the position of the magnet can be determined by querying the rows and columns. In the embodiment of Fig. 12, the coils e- benfalls arranged in a matrix, but rotated with respect to the arrangement of Fig. 11 by 45 °, wherein the electrical connection is selected such that always three coils of a row ZI to Z5 in series overall are switched on so that only rows can be queried. Such an arrangement is provided for cases in which the magnet is displaceable only along a straight line. It should be noted that depicted significantly enlarged for understandable shown in FIGS. 11 and 12 and coils shown in practice, the side length of a coil is only a few millimeters.

Figs. 13 to 15 show schematically further examples of the arrangement of coils on the wiring board. In Fig. 13, the coils are diamond-shaped arranged in rows and columns, similar to the example of FIG. 11 is noted with that the number of coils or rows and columns are within the discretion of the skilled man and are to be adapted to the particular application. In the example of FIG. 13, two columns are provided with three coils connected in series and two rows, each with two series-connected coils. In

Fig. 14, the coils are circular and disposed approximately in the form of a T. In Fig. 15, the coils are likewise circular and arranged in the form of a cross.

In addition it should be noted that all the features shown in FIGS. 1 to 15 can be combined, for example, every 5 to 10 illustrated arrangements of magnets with all in Figs. Arrangements shown 11 to 15 may be combined with the coils in FIGS. and this in turn com- bination with the circuits of FIGS. 1 and 2.

In the diagram of Fig. 16 eight parallel coupled inductors LI to L8 can be seen, each single inductor shown is a coil serving as a sensor for the position of a magnetic member M. The inductors LI to L8 are each connected to one input of a multiplexer MUX and its other end connected to ground (GND). All inductors lie on a circular path and K are here at variable distances from each other arranged. In the interior of the circular path five electrical switches Sl to S5 are arranged, the terminals may be selectively connected to a micro-processor or μΡ a driver circuit 2 here.

The multiplexer MUX is controlled by a microprocessor μΡ an enable input (en) is activated, whereby on address lines A0, A1, A2 and A3 individual inputs of the multiplexer is selected and switched through to the respective output OUT1. The output OUT1 of the multiplexer MUX is connected to an oscillator 1, which is constructed here as follows:

An operational amplifier VI (eg a comparator) is located with its positive input (+) to an intermediate power supply voltage + Vcc and ground (GND) voltage divider comprising resistors Rl and connected R2, wherein the common connection point of the resistors Rl and R2 via a first capacitor Cl is connected to the output OUT1 of the multiplexer MUX1.

This connection point is connected via a second capacitor C2 to ground. Further, the positive input of the operational amplifier VI via a feedback capacitor C3 to the output OUT2 of the OPE rationsverstärkers VI is connected. The negative input of the operational amplifier VI is connected via a resistor R3 to the output of the operational amplifier and VI via a capacitor C4 to ground. In each case switched through input of the multiplexer one of the inductors LI to L8 and the capacitor C2 is therefore connected in parallel between ground and the positive input of the operational amplifier VI, thereby forming an LC element of a completed by the operational amplifier resonant circuit, said LC-member via the coupling capacitor Cl is connected to the positive input of the operational amplifier VI. At the output OUT2 of the operational amplifier VI thus a signal whose frequency depends on a function of the respective values ​​of the LC element appears. The inductance value of the inductors LI to L8 is a accommodated in the proximity of the inductor coils forming the magnetic field, such as by a metal part, changes so that as a result the frequency of the output at the output OUT2 signal on the relative position between the metallic part and the coil Li depends to L8.

The output signal at the output OUT2 is supplied to the microprocessor μΡ, there evaluated with regard to its frequency and outputted depending on the application as a control signal at an output 0UT3.

The output OUT3 of microprocessor μΡ can be a serial or parallel digital output or an analog output which is supplied depending on the purpose driver circuits 2 and / or actuators 3 and possibly also a display. 4

The microprocessor μΡ can evaluate both the frequency and the change in the frequency and therefore issue not only a signal to L8 indicates the relative position of the magnetic part M to the individual coils LI but also its speed of movement.

In the context of Fig. 16 is to be noted that the number of inductors LI to L8 and the number of the multiplexer can be selected as desired and is respectively adapted to the intended application.

For some applications it is desirable to create simple switching commands that only take the states ON or OFF, for example, to control a cursor on a screen with the four directions of movement up, down, left and right and a confirmation command for a selection, by a so-called. ok button is generated. For this purpose are the Figure in the interior of the circular path K. 16 four switches Sl to S5 arranged which are here directly connected to the driver circuit 2. The skilled artisan will appreciate that the outputs of the switch S can also be supplied to the microprocessor μΡ to S5. In the illustrated embodiment is defined by closing switches ground potential at the output of the switch. Of course, it is also possible to electrically connect the switch so that when actuated, is present at a different potential, such as positive or negative supply voltage at the output.

Fig. 17 shows a plan view of actuators of the input device according to the invention. In a wall of the housing 15, a rotary ring 26 is inserted which has a plurality of gripping protrusions 24, or otherwise surface structure and can be rotated by the operator about an axis perpendicular to the plane of Fig. 17 axis. The mechanical construction is below in connection with

described Fig. 19. In the interior of the rotary ring 26, a so-called. Cursor ring 28 is arranged which is depressible to the arrows 29, 30, 31, 32 of Fig. 17 marked locations to operate the switches S2, S3, S4 and S5.

Inside the cursor ring 28, a push button 33 is disposed, with which the switch Sl is operated. At the rotary ring 26 at least a magnetic member is fixed, together with the rotary ring 26 on a

Circular path K is moved when the rotary ring is rotated 26th

In Fig. 18, several are indicated on the printed-circuit board 5 is printed coil LI to L8 as shown in dashed rectangles, which are interconnected processing in a formwork according to the Fig. 16. The coil LI to L8 are arranged distributed at variable distances along a circular path C, said circle path K is covered by the rotary ring 26 (Fig. 17). If the rotary ring 26 turned through one or more magnetic members, the magnetic members change their position relative to the coil LI to L8, the circuit of Fig. 16 then determines the exact position of the magnetic parts or M. a plurality of fixed counter magnet parts Ml to M8 are mounted on the wiring board 5, which are also arranged at variable intervals along the circular path K and are here in each case between adjacent coil LI to L8. As said above, the counter magnet parts may be permanent magnets or ferromagnetic metal parts, wherein the one or more attached to the rotary ring 26 magnetic members M also may be permanent magnets or ferromagnetic parts, in each case only one of the magnetic parts and counter-magnet pieces must be a permanent magnet.

Finally, mounted on the wiring board 5 against the magnetic parts may also be electromagnets whose magnetic field is variable by the current flowing through the electromagnet electricity.

The counter magnets Ml to M8 define "locking positions" for the rotary ring 26 and generate in cooperation with the magnet member M at the rotary ring 26, a haptically perceptible force.

Inside the circular path K plate 5 electrical switching contacts for the switches Sl are on the conductor track to see through S5, which are electrically conductive circular rings in the illustrated embodiment and having a mating contact surface in the center of these annuli (through a mechanically operable switching element Fig . 19) are electrically connected together. The switches S2 to S5 are on an inner circular path K2, which is concentric to the circular path K. The switch Sl is in the center of the orbits. The switch contact surfaces of the switches Sl to S5 and the terminals of the sensors LI to L8 are for example performed via conductor tracks to the electrical components of Fig. 16 as the multiplexer MUX or the driving circuit 2. Fig. 19 shows a cross section of the mechanical structure of the input device according to an embodiment of the invention.

The wiring board 5 is set off in a housing 15, the housing cover, the casing wall of Fig. 17 here. The housing wall is in the assembled state permanently connected to the casing 15 °. It has a circular opening 37, into which the rotating ring 26 engages with the top 38 of the rotary ring 26 protrudes above the top surface 39 of the housing wall 25th The housing wall 25 has a radially inwardly constricting vorsprin- bearing ring 40 at which the ball bearings are fixed 21st The inner ring of the ball bearing 21 is connected with the rotary ring 26th Thus, the rotary ring 26 can be smoothly rotated relative to the housing 15 and the housing wall 25th The skilled artisan will appreciate that a version without ball bearings is possible.

The rotary ring 26 is rotatably connected to a magnetic support ring 23 here, on the one or more magnetic pieces M are attached, which thus can rotate together with the rotary ring 26 along the circular path K.

In the wiring board 5 against magnet parts are embedded here, the counter-magnet pieces M2 and M6 are visible, which are arranged also reasonable in a circular path. The stator or the magnetic parts and the counter magnet parts may be mentioned-designed -as outset that the one or more magnets are One of them is during daas or other metal parts of ferromagnetic material.

The sensors LI to L8 are adjacent to Gegenmagnet- share and are not in Fig. 19 visible.

The rotary ring 26 has a central opening 45 for Betä- the switch Sl to S5 actuating organs. These switches are formed in the embodiment of Fig. 19 as switching domes known type, which are operated by switching plunger 46, 47 and 48 respectively. The switching dome, metal dome, so-called. Polydome or other known

be switching elements. The switch plunger 46 to 48 are covered with caps 49, 50, 51, which are individually depressed in the direction of the wiring board 5 NEN kön-. The switch plunger 46, 47, 48 are guided in guide elements 52, which are connected to the wiring board 5, so that they can be moved away therefrom only vertically in the direction to the wiring board 5 and is not comparable to rotate with the rotary ring 26 can.

Fig. 20 shows a further embodiment of the invention, which differs from that of FIG. 16, characterized in that mounted in place of the switches Sl to S5 coil L9 to L13 in a corresponding arrangement of the switches Sl to S5, which are electrically connected between ground and the multiplexer , Magnets are then attached to the plungers 46, 47, 48 of Fig. 19 and the wiring board 5, the coil L9, in the area attached to L13 counter magnets, wherein the magnet pieces are magnetized to the tappets and the counter magnet parts so that they repel one another , By depressing the plunger, the magnetic field changes at the coil L9 to L13, which results in a change in the home duktivitätswertes of the coils. This can detects a depression of the plunger, wherein the stroke of the depression and the speed can be evaluated, whereby also here a haptically perceptible force occurs by the magnetic parts.

The microprocessor μΡ cyclically switches the individual inputs of the multiplexer MUX to the output OUT1 by and to the oscillator 1, so that all the coils LI be queried continuously alternately to L13.

Fig. 21 shows a weitereas embodiment of the invention that differs from that of FIGS. 16 and 20 substantially by the Oscillator 1. The switches Sl to S5 and the coil L9 to L13 of Fig. 16 and 20 are omitted here for simplicity. Of course, these may be provided in the same manner also in the circuit of Fig. 20. The oscillator 1 is constructed here that the two inputs (+) and (-) of the amplifier VI by the voltage divider Rl, R2 and R3, R4 are each at half the supply voltage + CV. The negative input of the amplifier VI gear is connected via a coupling capacitor Cl to the output OUT1 of the multiplexer MUX. Further, the negative input of the amplifier VI via a feedback capacitor C3 is connected to the output OUT2 of the amplifier VI. The output of the multiplexer MUX is also connected via a capacitor C2 to ground, and through a capacitor C4 to the microprocessor μΡ. On this capacitor C4 of the oscillator 1 receives a start pulse, which ensures a reliable starting from the overall microprocessor μΡ, this pulse is synchronized with the respective switching of the multiplexer MUX.

The multiplexer MUX is in the same manner as in the embodiment of FIGS. 16 and 20 via an "e nable input (s) and address lines A0, Al, A2 driven. Are in the same manner to the output OUT3 of microprocessor μΡ as Embodiment connected FIG. 16 peripheral devices, such as driver circuits, a monitor or the like.

The circuit of the oscillator 1 of Fig. 21 is characterized by a lower power consumption and a reliable oscillation of the pulse on the basis of the capacitor C4. On the edge should also be mentioned that the amplifier VI may be a comparator that forms by the external circuit and the RC elements of the coils Li to L8 with the capacitor C2 a resonant circuit. Finally, it should be noted that the supply voltage + CV of the oscillator 1 can be applied from the microprocessor also μΡ and is thereby switched from the microprocessor. In the microprocessor μΡ also an evaluation of the frequency of the oscillator takes place, which can also be carried out both in terms of the value of frequency and in terms of the change in frequency. FIGS. 22 and 23 show a further embodiment of the invention in which only a predetermined number to be detected by rotary positions, as shown in FIG. 23 twelve predefined rotational positions are detected and intermediate positions of the pivot ring 26 will not be detected. The predetermined rotational positions of the rotary ring 26 are determined by a magnetic "rasterization". For this purpose, in the housing 15 four stationary magnets Ml, M2, fixed M3 and M4 and a rotatable together with the rotary ring 26 of metal plate 34 made of ferromagnetic material has a number of protruding teeth 35, the number of which defines the number of possible detent positions, in case of FIG. 23 so twelve. The metal disk 34 is secured to the magnet support ring 23, which in turn is non-rotatably connected with the rotary ring 26 and rotatable therewith about the ball bearing 21st The teeth 35 are disposed close to the magnets Ml to M4 at a small distance and cover in the radial direction relative to the axis of rotation of ring 26 about half of the end face of the magnets Ml to M4 off. Further, an encoder disk 36 is attached to the magnet support ring 23, which together with the magnet supporting ring 23 and the rotary ring 26 is rotatable and projections 36.1 to 36.6 which are placed the coil Li oppositely to L4, and thus change its inductance value when they are opposed to the coil or not opposite. In Fig. 23, the state is seen in which the projection 36.1 covers the coil LI, while the projections cover 36.2 to 36.6 none of the other coil L2 to L4.

The metal disc 34 and the encoder 36 may be integrally formed together as a disc, with the teeth 35 of the metal disc 34 and the teeth 36.1-36.6 of the encoder 36 are axially offset from each other such that the teeth of the 36.1-36.6

Encoder are closer to the coil LI to L4 than the teeth 35 of the metal disc and vice versa, the teeth 35 of the metal disc are closer to the magnets Ml to M4 as the teeth 36.1-36.6 of the encoder. The teeth 36.1-36.6 of the encoder 36 are arranged so that depending on the rotary position of the rotary ring 26 different combinations of overlaps of the coil LI to L4 are formed by the teeth 36.1-36.6 of the encoding disc, so that the coil LI to L4 associated oscillating circuits perform different combinations of output signals since each a coil 36 covered by a projection of the encoder and correspondingly 36.1-36.6 not covered by the encoder 36 different coils

generate output signals. Depending on the number of coils and projections of the encoder 36 can thus be arbitrarily distinguish clearly many predefined rotational positions.

Also in this embodiment, the rotary ring 26 has a central opening for the actuators of switches Sl to S5, which according to the embodiment of FIG. 19 also switch domes known

formed type, which are operated by switching plunger 27th In general, the switches 19 and 20 may be formed in the same manner as in the embodiments of FIG..

In the embodiment of FIGS. 22 and 23, the coil LI are to be printed on both sides of the wiring board 5 to L4, increasing its inductance.

Claims

claims
Input device with a conductor plate (5), at least one with respect to the conductor plate (5) fixed magnetic part (M1-M8) and movable at least one relative to the conductor plate (5) magnetic part (M) and at least one sensor (L1-L8) for determining the positions of the displaceable magnet member (M),
characterized in that at least one sensor (L1-L32) applied to the coil, a wiring board (5),
that the coil with an oscillator (1) is connected, whose output signal a from the relative position of the movable magnetic part (12) has frequency-dependent to the at least one coil (L1-L32) and
that the output signal of the oscillator (1) having a microprocessor (μΡ) is connected.
The input device according to claim 1, characterized in that
are that the coils (L1-L32) on the wiring board (5) imprinted or applied in etching technique.
The input device according to claim 2, characterized in that
the at least one fixed magnetic part (8, 9, 10) on the the coils (L1-L32) opposite side (7) of the conductor track plate (5) is mounted.
The input device according to any one of claims 1 bi 3, characterized in that
that the oscillator (1) comprises a feedback 0- peration amplifier (VI) and at least one capacitor (C2), which constitutes the frequency-determining LC element of the oscillator (1) together with de inductance of the at least one coil (L1-L32).
The input device according to any one of claims 1 to 4, characterized in that
that a plurality of coils (L1-L32) via at least one multiplexer (MUX1, MUX2) selectively connected to the oscillator (1) are connectable, said at least one multiplexer (MUX1, MUX2) by the microprocessor periodically (μΡ) is switched.
The input device according to claim 5, characterized in that
that several coils are arranged in a matrix form and row and row by row to inputs of the at least one multiplexer (MUX1, MUX2) are connected.
The input device according to any one of claims 1 bi 6, characterized in that
the at least one fixed magnetic part (8, 9, 10) is a ring magnet, a ring magnet o- is an electromagnet. The input device according to claim 7, characterized in that
that a plurality of mutually spaced-apart fixed magnetic parts (8, 9) are fixed to the wiring board (5).
The input device according to any one of claims 1 bi
8, characterized in that
that the displaceable magnet part (12) is a disk magnet or a cylindrical magnet and
that the movable magnet (12) is arranged in an operator control part (11).
The input device according to any one of claims 1 bi
9, characterized in that
the displaceable magnet (12) is guided in a link guide (13).
The input device according to any one of claims 1 bi 5 and 7 to 9, characterized in
that the displaceable magnet member (M) along a circular path is movable (K), wherein the sensors (L1-L8) are also arranged along the circular path (K).
Input device according to claim 11,
characterized in that along the circular path (K) fixed counter-magnet pieces (M1-M8) are arranged, which together with the movable magnetic part (M) during its movement generating a haptic perceptible magnetic force and the same time, locking positions for the movement of the movable magnetic member (M) form.
The input device according to claim 11 or 12, characterized in that the at least one mobile magnetic portion (M) on a rotating ring (6).
The input device according to claim 13,
characterized in that the rotary ring (6) in a ball bearing (21) relative to a housing plate (5) is mounted.
The input device according to any one of claims 11 to 14, characterized in that on the conductor plate (5) additional electrical switching contacts (S1-S5) are applied, which together with switching plungers domes and electrical switches.
The input device according to any one of claims 11 to 14, characterized in that in addition to along the circular path (K) arranged coils (L1-L8) further coil (L9-L13) are arranged in the inner region of the circular path, that each of the additional coil (L9 -L13) is associated with a permanent magnet, and that each of the additional coil (L9-L13), a tappet (26, 27, 28) is associated with a further magnetic member, wherein the additional coils (L9-L13) can be connected to the oscillator. Input means 11 to 16, characterized in that the Oszilla tor (1) rückge a via a capacitor (C3) (VI) has coupled operational amplifier according to one of the claims, whose two inputs respectively by Spannungstei ler (Rl, R2; R3, R4) at half the operating voltage (+ CV) of the oscillator (1), and in that one of the inputs of the operational amplifier (VI) via a coupling capacitor (Cl) selectively with one of the coils, can be connected (L1-L8 L9-L13).
The input device according to claim 17,
characterized in that one of the inputs of the operational amplifier (VI) over a wide ren capacitor (C4) of a microprocessor (μΡ) a start pulse is supplied.
The input device according to any one of claims 17 or 18, characterized in that the operating voltage (+ CV) of the oscillator (1) of a microprocessor (μΡ) switched on and off.
The input device according to any one of claims 11 to 19, characterized in that the coils (L1-L8, L9-L13) via at least one multiplexer (MÜX) selectively connected to the oscillator (1) are connectable, said at least one multiplexer (MUX) periodically from the microprocessor (μΡ) is switched.
EP11711037A 2010-03-22 2011-03-22 Input apparatus with haptic feedback Pending EP2550581A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE201010012247 DE102010012247A1 (en) 2010-03-22 2010-03-22 Input device for e.g. computer, has inductors formed as coil that is connected with oscillator, where output signal of oscillator has frequency based on relative position of movable magnets to coil
DE201010019596 DE102010019596A1 (en) 2010-05-05 2010-05-05 Input device, has coils attached on circuit board and connected with oscillator, where output signal of oscillator has frequency that is dependent on relative position of movable magnetic part towards coil
PCT/EP2011/001410 WO2011116929A1 (en) 2010-03-22 2011-03-22 Input apparatus with haptic feedback

Publications (1)

Publication Number Publication Date
EP2550581A1 true EP2550581A1 (en) 2013-01-30

Family

ID=44073609

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11711037A Pending EP2550581A1 (en) 2010-03-22 2011-03-22 Input apparatus with haptic feedback

Country Status (4)

Country Link
US (1) US8907661B2 (en)
EP (1) EP2550581A1 (en)
CA (1) CA2793909C (en)
WO (1) WO2011116929A1 (en)

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US20130002341A1 (en) 2013-01-03
CA2793909C (en) 2015-10-20
WO2011116929A1 (en) 2011-09-29
US8907661B2 (en) 2014-12-09
CA2793909A1 (en) 2011-09-29

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