WO2009049812A1 - Unité de commande et procédé pour déclencher une fonction - Google Patents

Unité de commande et procédé pour déclencher une fonction Download PDF

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Publication number
WO2009049812A1
WO2009049812A1 PCT/EP2008/008512 EP2008008512W WO2009049812A1 WO 2009049812 A1 WO2009049812 A1 WO 2009049812A1 EP 2008008512 W EP2008008512 W EP 2008008512W WO 2009049812 A1 WO2009049812 A1 WO 2009049812A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
sensor surface
output value
sensor output
operating unit
Prior art date
Application number
PCT/EP2008/008512
Other languages
German (de)
English (en)
Inventor
Gerd Reime
Original Assignee
Gerd Reime
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 Gerd Reime filed Critical Gerd Reime
Publication of WO2009049812A1 publication Critical patent/WO2009049812A1/fr

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/962—Capacitive touch switches
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H03K17/955—Proximity switches using a capacitive detector
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/9627—Optical touch switches
    • H03K17/9631—Optical touch switches using a light source as part of the switch
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/9627—Optical touch switches
    • H03K17/9638—Optical touch switches using a light guide
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K2017/9602—Touch switches characterised by the type or shape of the sensing electrodes
    • H03K2017/9604—Touch switches characterised by the type or shape of the sensing electrodes characterised by the number of electrodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/96058—Fail-safe touch switches, where switching takes place only after repeated touch
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/96066—Thumbwheel, potentiometer, scrollbar or slider simulation by touch switch
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/960705—Safety of capacitive touch and proximity switches, e.g. increasing reliability, fail-safe
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/960785—Capacitive touch switches with illumination

Definitions

  • the invention relates to an operating unit and a method for triggering a function as a result of the approach of an object according to the preamble of claim 1 or 11.
  • Capacitive or optical sensors are used in many areas of everyday life.
  • the commonly introduced operating concept can be mentioned under the ceramic plate on the stove.
  • Under a heat-resistant glass plate are in a capacitive solution areas that respond to a small change in capacitance, as caused by the application of the finger.
  • In the optical solution are located below the glass plate optical transmitter and receiver. Usually emits infrared light. If the reflection property changes as a result of the laying on of the finger, this detects the described arrangement.
  • the capacitive sensors respond to conductive elements, such as a finger represents due to its liquid content.
  • conductive elements such as a finger represents due to its liquid content.
  • dry paper hardly changes the capacity, so this is not recognized.
  • metallic pots or damp cloths different with metallic pots or damp cloths.
  • time and function windows are usually incorporated into the operating philosophy. These have z. B. the following function:
  • BEST ⁇ TIGÜNQSKOPIE One wants to switch on a ceran field a certain stove plate.
  • a control panel with eg capacitive sensors is provided.
  • a so-called activation key parental control
  • a time window opens for another five seconds and releases the operation of the actual keypad.
  • the desired hot plate must then be switched on by pressing a button for at least three seconds. If no further key is pressed within these five seconds, the time window closes and the keypad is deactivated. Placing the finger on the third button for at least one second then counts the corresponding heating level up or down. Switching off or changing the heating temperature takes place in a similar manner.
  • a stove control can be realized by the operating philosophy with appropriate key sequence and given residence times, but it is not suitable for fast operation, such as. B. is required for the control panel of a bell system. There one wants to activate a certain key without time delay, without having to worry about an "activation" beforehand.
  • DE 10 2004 054 322 B3 shows an optical detection of the actuation of a user interface on a ceramic hob.
  • Optical transmitters emit light received by optical receivers and e.g. is reflected by a finger. The position of the finger is determined by evaluating the incidence of light on all optical receivers by averaging.
  • DE 10 2004 054 322 B3 deals in detail with the operation of the ceramic hob, the case of over-wiping is not considered in detail.
  • the present invention based on the object to provide an operating unit and a method for triggering a function that does not have the deficiencies described above and only respond to desired tactile and switching operations.
  • This object is achieved with an operating unit having the features of claim 1 and with a method having the features of claim 11.
  • the operating unit and the method are now able to recognize the approach angle and / or the size of the object, so that it can be detected with a corresponding logic, whether or not actually a keying operation should take place.
  • the control unit does not respond to the wiping or lingering of any object on the sensor surface or the accidental contact with unauthorized children's hands. It also preferably does not react to humidity or irrigation. However, contact with a finger or other object intended to trigger the function is recognized immediately without any time delay.
  • Such a control unit can be used as a button z.
  • a button z For example, in a bell system behind a vandalism-proof glass pane.
  • the "doorbell buttons" respond correctly to touching with a finger, but not when, for example, with a damp cloth, the glass surface is cleaned or when children feel uncontrolled on the glass surface.
  • Objects can be placed anywhere on the control panel, it can be wiped wet or even herumgegrapscht on it without a button responds. Only when a specific finger is touched with a finger does it respond.
  • FIG. 1 shows a schematic representation of the user interface with associated sensor electronics and associated sensor values in the case of an object oriented at an angle on the user interface
  • 2 is a schematic representation according to FIG. 2 in the case of a flat object oriented on the user interface
  • FIG. 1 shows a schematic representation of the user interface with associated sensor electronics and associated sensor values in the case of an object oriented at an angle on the user interface
  • 2 is a schematic representation according to FIG. 2 in the case of a flat object oriented on the user interface
  • FIG. 1 shows a schematic representation of the user interface with associated sensor electronics and associated sensor values in the case of an object oriented at an angle on the user interface
  • 2 is a schematic representation according to FIG. 2 in the case of a flat object oriented on the user interface
  • FIG. 1 shows a schematic representation of the user interface with associated sensor electronics and associated sensor values in the case of an object oriented at an angle on the user interface
  • 2 is a schematic representation according to FIG. 2 in the case of a flat object oriented on the user interface
  • FIG. 3 a schematic representation of the sensor electronics with associated evaluation electronics
  • FIG. 4 sensor signals for inner sensor surface, surrounding sensor surface and the resulting output information with a correct finger approach or contact of the inner sensor surface
  • FIG. 4 sensor signals for inner sensor surface, surrounding sensor surface and the resulting output information with a correct finger approach or contact of the inner sensor surface
  • FIG. 5 shows a representation according to FIG. 4 when the finger is laid flat
  • FIG. 4 shows a representation according to FIG. 4 when swiping with a finger over the sensor arrangement (taking into account a corresponding temporal evaluation of the sensor output values 1.1 1 and 7.1).
  • FIG. 8 is a representation according to FIG. 4 with sprinkling of the sensor surface
  • Fig. 1 1 an embodiment of a slider
  • FIG. 15 is a plan view of the user interface of FIG. 13,
  • Fig. 16 is a schematic representation of an associated electronics.
  • the button or switch for all applications is suitable in which tactile or switching operations are made, in particular to switch power for any function.
  • FIG. 1 and 2 show a control unit 1.1 with associated electronics and the sensor output values determined therefrom when an object 1.6 approaches, which is referred to below as finger 1.6. It is understood that with this system, the approach of other objects can be detected.
  • a sensor electronics 1.7 which responds to small capacitive changes, a capacitive sensor is formed together with a capacitively effective sensor surface 1.3.
  • the diameter of the sensor surface 1.3 which acts capacitively as a sensor, is e.g. 20 mm. It can e.g. be applied to the substrate 1.2 a conventional electronic board, which also carries the corresponding sensor electronics 1.7.
  • this board is then attached directly or via appropriate conductive rubber under a Ceran Assembly, this arrangement corresponds to a commercially available capacitive button. Placing a finger 1.6 on the sensor surface changes the capacitance of the sensor surface to the environment and is recognized as a tactile function.
  • the reaction to an approach with a conductive object is represented as an analog output signal 1.10 of the sensor electronics 1.7.
  • the approach of a finger then causes an increase of the sensor output value 1.11, which is recognized as such when exceeding a predetermined threshold value 1.12 as a tactile function.
  • this function is also triggered when placing or wiping over the sensor surface with a damp cloth or with any other conductive object on the sensor surface.
  • the outer sensor surface has a width of e.g. 5mm.
  • the rest of the existing surface, which surrounds the outer sensor surface in the present case, can be formed as a ground surface 1.5.
  • the surrounding around the inner sensor surface 1.3 sensor surface 1.4 is connected to a further sensor electronics 1.8, which may be the same as the sensor electronics 1.7 constructed for the inner sensor surface 1.3.
  • the sensitivity of the two systems is formed in the exemplary embodiment in such a way that a finger 1.6, which is laid with its fingertip on the inner sensor surface 1.3 almost flat (0-20 degrees), identifies a sensor event of the surrounding sensor surface 1.4, generated in the embodiment larger sensor output value than in the inner sensor surface 1.3.
  • the corresponding sensitivities can be set as desired via the sensor area ratios.
  • the larger the sensor area the greater the increase in the sensor output value 1.11 or 1.13 or change in the sensor value.
  • the same effect can also be achieved via different sensitivities of the sensor electronics, or the threshold values 1.12 for the inner and surrounding sensor surfaces are chosen differently.
  • the further sensor output value of the further sensor surface 1.4 surrounding the first sensor surface 1.3 results in a sensor output value 1.13, 2.1 at an approach which takes place below a certain angle to the user interface and thus approximately parallel to the sensor surface, which in another Relative to the first sensor output value 1.11 of the inner first sensor surface 1.3 is than at an approach above the certain angle, so that the undershooting or exceeding of the angle is easily recognizable.
  • the quotient of the sensor output values at the particular angle may be equal to 1 and above or below may be greater or lesser than the number 1 (or vice versa).
  • the inner sensor surface has a diameter of 10 mm and z. B. 0.5 mm distance, the width of the surrounding sensor surface 2 mm.
  • a flat-laid finger can still be reliably distinguished from a diagonally or vertically placed finger.
  • the vertical or at least not plane-parallel Touching a finger then leads to a higher sensor output value 1.11 of the inner sensor surface compared to the sensor output value 1.13 of the surrounding sensor surface 1.4.
  • a size comparison between the sensor output value 1.11 of the inner sensor surface and the sensor output value 1.13 of the surrounding sensor surface to a correct operation with the object or finger 1.6 or a faulty operation z. B. be distinguished by a wet cloth.
  • a rag is z. B. when cleaning usually surface contact the surface and therefore always in the surrounding sensor produce a distinguishable, larger in the embodiment output value as the inner sensor. The same applies to pots or any other objects.
  • the two sensor electronics must preferably be controlled by a suitable control electronics 1.9 so that they do not interfere with each other. This can be done by sequential scanning of the sensor surfaces 1.3 and 1.4 or by a circuit arrangement according to the Halios method described in EP 0 706 648 B1.
  • the sensor output values 1.11 and 1.13 with correct operation Touched the finger 1.6 with a minimum angle of z. B. 30-90 degrees, the inner sensor surface 1.3, wherein 90 ° corresponds to the perpendicular to the operating level, a higher sensor signal 1.11 than the sensor signal 1.13 of the surrounding sensor surface 1.4. This sensor surface is further away from the finger when properly operated and is less affected accordingly. However, if the finger is flat as shown in Fig. 2 or 5 or at an angle of e.g. placed on the sensor surfaces 1.3 and 1.4 less than 30 degrees, the sensor signal 2.1 is greater than the sensor signal 1.11. The same is true for over wiping with a damp cloth or placing conductive objects on it. It is immaterial whether a e.g. Slowly push the ceramic pot from the side onto the sensor assembly or place it from above. The delimitation of the angles can be set arbitrarily.
  • the approach angle of the object to the sensor surface becomes the criterion for triggering a function, i. for the operation of the Tastvorgangs.
  • the projection of the object in the direction of the sensor surface may also decide whether or not a touch operation is recognized as such.
  • an evaluation device 3.1 compares both sensor values 1.11 and 1.13 or 2.1 and derives therefrom in a logical operation a correct operation with the finger 1.6 or a malfunction z. B. by over wiping off. If the threshold value 1.12 from the sensor output value 1.1 1 of the inner sensor surface 1.3 is exceeded, while the sensor value 1.13 of the surrounding sensor surface 1.4 has not yet exceeded the threshold value 1.12, correct operation is present. In this case, an output information 3.2 (FIG. 3) is output eg as a switching signal. However, if the sensor value 2.1 of the surrounding sensor surface 1.4 exceeds the threshold value 1.12 before the sensor value 1.11 of the inner sensor surface reaches it, an incorrect function is present and no output information is output.
  • the sensor value 2.1 of the surrounding sensor surface 1.4 will always output and, in the exemplary embodiment, be greater than the sensor value 1.11 of the inner sensor surface 1.3 if a planar conductive object, e.g. a damp cloth, a flat hand, a pot or the like is placed on the sensor device or pushed laterally.
  • a planar conductive object e.g. a damp cloth, a flat hand, a pot or the like is placed on the sensor device or pushed laterally.
  • FIGS. 4 to 8 the sensor signals for inner sensor surface, surrounding sensor surface and the resulting output information 3.2 are shown in FIGS. 4 to 8.
  • the following states are shown:
  • the sensor output value 1.1 1 of the inner sensor surface 1.3 exceeds the threshold value 1.12, while the sensor output value 7.1 of the surrounding sensor surface has already fallen below the threshold value 1.12 again.
  • this is often undesirable. For example, only a correct operation, ie a laying on of the finger on the inner sensor surface 1.3 should be detected, but not when wiping over the sensor assembly with the finger. Or not, when the side of the finger is pushed onto the sensor assembly and abruptly comes to rest on the inner sensor surface.
  • the evaluation logic 3.1 evaluates the sensor output values 7.1 of the surrounding ring 1.4 shortly before the time at which the sensor output value 1.11 of the inner sensor surface 1.3 exceeds the threshold value 1.12.
  • the function can proceed as follows: each exceeding of the sensor output value 1.11 of the inner sensor surface 1.3 above the predetermined threshold value 1.12 leads to a correct pushbutton function, if in the last 500 ms the sensor output value 7.1 of the surrounding sensor surface 1.4 does not exceed the predetermined threshold value 1, 12 was or still is.
  • the course of the sensor output values 1.11 and 7.1 is considered in more detail over time. If the sensor output value 7.1 drops relatively steadily, while the sensor output value 1.11 rises relatively steadily, no output information is output when the threshold value 1.12 is exceeded by the sensor output value 1.11.
  • Relatively continuous means that e.g. as a result of the trembling of the finger, values may also arise in the opposite direction, but a tendency to rise or fall is to be observed.
  • this function can be wiped as much as you like on the control unit, without being responsive. Wiping in such a way that the finger comes to a standstill directly on the inner sensor surface, does not lead to a response of the operating unit by the above-described measure. In practice, this function has been particularly effective in uncontrolled contact by children's hands, e.g. proven on a ceramic hob to be advantageous.
  • Moisture on the operating unit primarily influences the sensor output values of the surrounding sensor surface 1.4, since it is located in the immediate vicinity of the surrounding ground surface 1.5.
  • Moisture means an increased capacity between the surrounding sensor surface 1.4 and any ground surface 1.5.
  • the sensor output value 8.3 for the surrounding sensor surface 1.4 rises more rapidly or faster than the sensor output value 8.2 for the inner sensor surface 1.3. This ensures that a moisture film or raindrop or expiring raindrops can not trigger any function.
  • a ground surface 1.5 may, but need not be provided, ie, the surface surrounding the further sensor surface 1.4 need not be grounded, since earthing, whether present or not, initially does not disturb the results.
  • the described function can of course also be formed with a plurality of central sensor surfaces and a sensitive surface surrounding them together.
  • 9 shows an example of five sensor surfaces 9.1 which are surrounded by a jointly surrounding sensor surface 9.2. All together can in turn be surrounded by a mass surface 1.5.
  • further inner sensor surfaces 9.1 as shown in FIG. 10, in each case one web 10. 1 can lie between the inner sensor surfaces.
  • a surrounding sensor surface 11.3 can be placed around the inner sensor surfaces 11.1 and 11.2. The inner sensor surfaces are formed so that they increase in opposite directions, thereby making the position of the slider detectable.
  • FIG. 13 shows an optical design of the operating unit described above in section.
  • the corresponding plan view is shown in FIG. 15.
  • the light sources 13.4 and 13.3 are arranged in a circle around the photodiode 13.5. They may consist of a corresponding light guide with at least one LED as a light source or any number of circularly arranged LEDs.
  • the light sources can also consist of organic, flat LEDs. In place of the circular structure shown, any other one can be chosen as long as it fulfills the functions described.
  • an optically transmissive cover 13.1 there are two optical proximity sensors, each formed by photodiode 13.5 and a first light source 13.4 or photodiode 13.5 and a second light source 13.3.
  • the first light source 13.4 is preferably arranged annularly.
  • This annular light source may e.g. a light distributing plastic ring with at least one LED or a number of annularly arranged LEDs.
  • the surrounding sensor surface is formed equivalent to the inner sensor surface.
  • a second light source 13.3 is preferably placed in a ring around the inner sensor arrangement. Together with the photodiode 13.5, it forms a second sensor arrangement. Both sensor arrangements react as proximity sensors to reflect the emitted light 13.2 on the finger 1.6, or at any other arbitrary reflective object.
  • a finger 1.6 is set centrally on the operating unit. Almost only the sensor value of the inner sensor arrangement is influenced and leads to the already known sensor output value 1.11. The light of the light source 13.3 is less or not reflected to the photodiode 13.5. The sensor output value 1.13 is therefore influenced only slightly, similar to the capacitive solution.
  • FIG. 14 shows the signal profile of the sensor output values 1.11 and 2.1 with the finger 1.6 laid flat. Also in this function, the sensor output values 1.11 and 2.1 correspond to those of the capacitive control unit in FIG. 2 or 5.
  • the HALIOS method according to EP 0 706 648 B1 has been found for the creation of one or more touch panels or slider control or "mouse" functions ( Figure 16) Comparison of the sensor output values for inner sensor surfaces 1.3 and surrounding sensor surfaces 1.4 immediately and dynamically instead A corresponding evaluation signal then only consists of eg a positive deviation from a quiescent value with correct operation or a negative deviation in the case of incorrect operation , as described in Fig. 3, supplied for further processing.
  • a clock generator 16.8 supplies a first clock signal 16.17 to an amplitude controller 16.9. and a second inverted clock signal 16.18 to an amplitude controller 16.11.
  • the outputs of the amplitude regulators are given via the resistors 16.1, 16.2 and 16.3, 16.4 to the input of the alternating signal amplifier 16.5.
  • the clock signal voltage at the input of the alternating signal amplifier 16.5 is canceled.
  • resistance values of e.g. 10 - 500 KOhm at a clock frequency of z. B. 100 KHz proved useful.
  • the inner sensor surface 1.3 is connected.
  • a change in the capacitance of this sensor surface for example by touching the sensor surface with the finger 1.6, leads to an incomplete cancellation of the input signal of the AC signal amplifier 16.5.
  • the amplitude-controlled driver stages 16.9 and 16.11 are controlled inverted by means of signal inverters 16.12 against each other with the control value 16.17. If the output amplitude of a driver stage increases, it drops accordingly in the other one.
  • the deviation 16.15 will increase or decrease compared to a previous value 16.13 until the clock signal 16.18 and the inverted clock signal 16.19 cancel each other out again at the input of the alternating signal amplifier 16.5.
  • control value increases with correct operation.
  • An evaluation logic 3.1 which is not shown here graphically, can then be used e.g. by means of a threshold 16.14 an evaluation of the control value 16.17. make. If the threshold value 16.14 is exceeded, this is considered to be "operated", for example if the sensor surface 1.3 is touched with the finger.
  • the surrounding sensor surface need not be larger than the inner sensor surface.
  • the sensitivity of the sensor surfaces 1.3 and 1.4 can be selected such that only at a relative to the inner sensor surface 1.3 very narrow surrounding sensor surface1.4 the function described above is obtained.
  • the resistors 16.1 to 16.4 described in the exemplary embodiment of FIG. 16 can also be replaced by capacitors or series circuits made up of resistor and capacitor. Another subordinate function is achieved if even small changes in the sensor output values are detected, ie values that are significantly below the threshold value 1.12. Small changes occur, for example, when approaching a hand at a distance of 20 cm. If this change is detected, with the information thus obtained z. B. a backlight can be activated.

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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)
  • Electronic Switches (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

L'invention concerne une unité de commande et un procédé pour déclencher une fonction par approche d'un objet (1.6). Une première surface de capteur (1.3) fournit, à l'approche d'un objet, une première valeur initiale de capteur (1.11). Cette surface est au moins partiellement entourée par au moins une autre surface de capteur (1.4) qui, à l'approche de l'objet (1.6), fournit une autre valeur initiale de capteur. Un dispositif d'évaluation analyse ces valeurs initiales de capteur pour générer une information initiale (3.2) pour le déclenchement d'une fonction. À cet effet, les surfaces de capteur sont disposées et commandées de manière à ce que l'angle d'approche de l'objet (1.6) vers la surface de capteur peut être déterminé comme critère pour la génération de l'information initiale (3.2) découlant des valeurs initiales de capteur.
PCT/EP2008/008512 2007-10-09 2008-10-09 Unité de commande et procédé pour déclencher une fonction WO2009049812A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007048402.1 2007-10-09
DE102007048402A DE102007048402A1 (de) 2007-10-09 2007-10-09 Bedieneinheit und Verfahren zur Auslösung einer Funktion

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WO2009049812A1 true WO2009049812A1 (fr) 2009-04-23

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JP2013533952A (ja) * 2010-05-07 2013-08-29 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 探知機
CN104380139A (zh) * 2012-02-23 2015-02-25 艾尔默斯半导体股份公司 用于测量发射器与接收器之间的测量系统的传输路径的性质的方法和传感器系统
US10216328B2 (en) 2013-03-15 2019-02-26 Audi Ag Method for operating a touch-sensitive control system and device having such a control system

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DE102009057439B4 (de) 2009-10-27 2012-09-27 Gerd Reime Vorrichtung und Verfahren zur fehlerfreien kapazitiven Messwerterfassung
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