EP0841521B1 - Unité pour la commutation et commande des appareils ménagers - Google Patents

Unité pour la commutation et commande des appareils ménagers Download PDF

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Publication number
EP0841521B1
EP0841521B1 EP97116612A EP97116612A EP0841521B1 EP 0841521 B1 EP0841521 B1 EP 0841521B1 EP 97116612 A EP97116612 A EP 97116612A EP 97116612 A EP97116612 A EP 97116612A EP 0841521 B1 EP0841521 B1 EP 0841521B1
Authority
EP
European Patent Office
Prior art keywords
operating unit
operating
processor
function
unit according
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.)
Expired - Lifetime
Application number
EP97116612A
Other languages
German (de)
English (en)
Other versions
EP0841521A3 (fr
EP0841521A2 (fr
Inventor
Ulrich Brüggemann
Gerhard Hochgesang
Wolfgang Küchler
Klaus Schmöger
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.)
Preh GmbH
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
Publication of EP0841521A2 publication Critical patent/EP0841521A2/fr
Publication of EP0841521A3 publication Critical patent/EP0841521A3/fr
Application granted granted Critical
Publication of EP0841521B1 publication Critical patent/EP0841521B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F23/00—Advertising on or in specific articles, e.g. ashtrays, letter-boxes
    • G09F23/0058—Advertising on or in specific articles, e.g. ashtrays, letter-boxes on electrical household appliances, e.g. on a dishwasher, a washing machine or a refrigerator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00—Contacts
    • H01H2201/02—Piezo element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2207/00—Connections
    • H01H2207/008—Adhesive means; Conductive adhesive
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/068—Properties of the membrane
    • H01H2209/07—Properties of the membrane metallic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/068—Properties of the membrane
    • H01H2209/082—Properties of the membrane transparent
    • H01H2209/084—Glass

Definitions

  • the invention relates to an operating unit for switching and controlling household appliances, in particular large household appliances, such as kitchen stoves, dishwashers and Washing machines and the like, according to the preamble of claim 1.
  • the invention also relates to a method according to the preamble of the patent claim 14th
  • control panel An operating unit (control panel) is described in DE 39 20 257 A1. It points the control panel control elements and correspondingly assigned display elements on. By using control buttons the control surface is Openwork in the operating area and difficult to clean.
  • DE 42 29 731 A1 describes a control panel that is included in an installation housing a cover plate is housed.
  • the display and / or control elements the control panel on the inside of the cover plate.
  • Turn on and control of the household appliance can also be done via an infrared remote control.
  • keys are specified as operating elements.
  • a sensor switching device specifies DE 44 07 741 A1.
  • a microprocessor can be switched on or off a power section, for example a hot plate in the cooktop Herd included. For safety reasons are for switching on the power section to operate two control buttons in chronological order.
  • a pressure-sensitive signal generator can be found in US Pat. No. 4,190,785.
  • sandwich form is a piezoelectric layer between an electrically conductive Substrate or carrier material and electrodes attached.
  • the piezoelectric layer is applied over the entire lower surface of the substrate.
  • each Pressure point assigned to an electrode arranged below the piezoelectric layer is.
  • the output voltage changes between the substrate and the respective electrode.
  • There is an output voltage for each pad defined so that the pressure application point by a target-actual comparison in the signal processor is determined.
  • a grasp next to the pads causes indefinable for the signal processor States so that operating errors can occur.
  • the object of the invention is a control unit for switching and controlling specify a household appliance, the control surface in the operating area free of Breakthroughs is the corresponding in terms of their operating position with simple means the requirements of different devices can be designed and the incorrect operation difficult.
  • the invention is based on the idea of individual piezo sensors for activating Functions to use. With the help of a processor, those from the piezo sensors generated signals evaluated and depending on the function selection to a power unit Switching the selected function through. The in the case of brief unwanted pressure effects Signals triggered on the piezo sensors are filtered out in the processor. This makes it difficult to operate incorrectly, as deliberately applied pressure or a longer printing period is required to switch and control the household appliance is. The actuation pressure is transmitted to the piezo sensors through the closed, stiff operating surface, which is tight and therefore simple is to be cleaned.
  • the piezo sensors are located behind a control surface that is used for optical signals transparent material, preferably made of glass but also of another dimensionally stable Material, e.g. Metal, plastic, wood can exist.
  • This control surface can be on the front and with glass-like material can also be printed on the back with symbols and serves as a contact surface for the user.
  • continuous control surface are the components behind it against environmental influences such as dust and moisture.
  • An offset application of the sensors to the respective actuation area is advantageous the operating area, since this area is printed with the function symbols can be examined directly by means of a light source. Also, with use of several sensors belonging to one actuation area and thus to A function achieves that a clear assignment (statement) for the selected Function is maintained by the processor, even if only in the vicinity of the operating area the pressure was applied.
  • the sensors themselves are preferably accommodated in a film package, the sensor surfaces advantageously being contacted directly with conductor tracks on an inner front and an inner rear side of the film by means of contact adhesive.
  • the sensors can also be attached directly to the rear of the control surface by means of an adhesive or conductive adhesive.
  • the piezo sensors are rigidly or firmly connected to the control surface are.
  • the piezo sensors which are preferably distributed in a matrix-like manner, already detect the smallest Bulges in the control surface.
  • FIG. 1 shows the front of an operating unit 1 with a breakthrough-free one continuous control surface 2, made of glass or glass-like material.
  • actuation areas 3 are arranged on the control surface 2 .
  • pressure-sensitive sensors 4 i. H. Piezo sensors 4, e.g. piezodisks Type BCE from Sanyo, preferably behind the operating surface 2 in a matrix are arranged.
  • actuation areas 3 Assigned to the actuation areas 3 is a printed film 5 with symbols attached for the functions 6 per actuation area 3. This slide 5 is behind the glass control surface 2.
  • the piezo sensors 4 are preferably offset from the symbols of the printed film 5 or operating areas 3 of the control surface 2 arranged so that by means of a light source 7, for example a light guide or light stone, which printed Slide 5 is illuminated directly. If the light from the light source 7 is to illuminate the film 5, so the film 5 must be translucent.
  • the control surface 2 is in a conventional manner by a metal frame 8 (Fig. 2 a / b) attached to a household appliance, not shown, for example stove. This can be in an upper section, for example above the baking and Roasting oven door done. A separate attachment of the control surface 2 outside the Large device is possible.
  • FIG. 2 b and FIG. 3 there is a film package 9 with the integrated piezo sensors 4 behind the operating surface 2.
  • the film package 9 is electrical via a flexible connector 10 with a printed circuit board 11, which is functionally assigned to a processor 12 connected.
  • the film package 9 consists in one part of a front and a rear film, but can also be made up of a front film and a cover film, connected by a loop. Printed conductors are applied to these foils, which electrically connect the flexible connector 10 and the piezo sensors 4.
  • the film package has a spacer film 14 (spacer film) lying between the films.
  • the light source 7 required for light distribution is preferably on the printed circuit board 11 arranged with.
  • the symbols of the functions 6 on the film are on the film package 9 5 printed (Fig. 3).
  • the pressure-sensing piezo sensors 4 which have contacts 13, conductor tracks and the connector 10 are electrically connected to the circuit board 11.
  • the contacting 13 of the piezo sensors 4 takes place via the two sensor surfaces with the front film and the rear film of the film package 9.
  • the piezo sensors 4 are preferably glued into the foil package 9, using an electrical contact adhesive (Conductive adhesive) takes over the contact 13.
  • Spacer film 14 provides the necessary distance or for the compensation for height adjustment in the foil package 9.
  • the spacer foil 14 is used for positioning of the piezo sensors 4.
  • the punched holes in the spacer film 14 result from the required arrangement of the piezo sensors 4 in the foil package 9 and are by the in the control unit 1 of the household appliance provided arrangement of the symbols of Functions 6 specified.
  • the foil package 9 is preferred in the areas where there are no piezo sensors 4 translucent so that the light from the light sources 7 the printed film 5th illuminated in the symbol area.
  • the film package 9 is insolubly rigidly connected to the rear of the control surface 2 and introduces the pressure pulses directly to the piezo sensors, ie does not dampen them.
  • the piezo sensors 4 can also be attached directly to the rear of the control surface 2 by a conductive adhesive and carried by this control surface.
  • Fig. 4 shows schematically the functional sequence. If the operating surface 2 is touched by an operator, this operating surface 2 bends at the actuation position / area 3.
  • a piezo sensor 4 located behind it for example an inversely operating piezo buzzer, a potential difference is generated in a known manner via a charge shift in the piezo sensor 4, as a result of which a signal (voltage pulse) is supplied by the piezo sensor 4.
  • This signal consists of two opposite pulses, which are caused once when the force is applied and the other time when the force is released.
  • the amplitude of the pulses depends on the size / strength the pressure change on the control surface 2, from the removal of the pressure in Actuation range 3 to the piezo sensor 4 and the piezoelectric coefficient of Piezo sensor 4 itself.
  • the sensor signal generated by the piezo sensor 4 arrives into the processor 12 and is passed through an input filter 15.
  • the input filter 15 is set to a frequency of preferably 1 Hz for fast unconscious operations on the actuation area 3, for example when cleaning the control surface 2, the are picked up and passed on by the piezo sensors 4, not for evaluation bring to.
  • the analog sensor signals passing through the input filter 15 become conventional ones Switching stages in processor 12, for example, by an A / D converter, digital Signals generated by a microcontroller 16 through a defined software be evaluated.
  • the microcontroller 16 determines which piezo sensor 4 was activated by actuation.
  • the software program also checks the switching state of this called, assigned to the actuated piezo sensor 4 Function 6, d. H. whether function 6 is switched on or off should. This enables the use of only one piezo sensor 4 for switching on or off a function 6.
  • function 6 "oven” determines the microcontroller 16 after this with the actuated piezo sensor 4 the associated function 6 has determined the function state (on / off) and controls the light source 7 associated with the function 6 "oven” behind the control surface 2 and a power section 17 of the cooker for switching the oven on or off.
  • the lighting changes color behind the printed film (s) 5 as search lighting.
  • the one that is printed Illuminating film 5 light source 7 switched, for example from red to green, for example with a well-known two-color LED.
  • An additional display 18, for example A graphic Liquid Cristal Display (LCD) can be placed in the area of the cooker be appropriate and display different values in a conventional manner.
  • LCD graphic Liquid Cristal Display
  • control surface 2 has a number of matrix-like pressure-sensing piezo sensors 4, the force when pressing an actuation area 3 of the function 6, for example 'grill 1' by others Piezo sensors 4 of the other functions 6, for example 'grill 2' and 'baking' detected and also leads to a voltage pulse there. These pulses take in their amplitude from, the further the piezo sensors 4 are from the actuated actuation area 3.
  • the one closest to the pressure area of control surface 2 Piezo sensor 4 delivers the quantitatively strongest signal U1, the neighboring piezo sensors 4 quantitatively lower signals U2 (Fig. 5). All signals U1, U2 generated in this way are given to the microcontroller 16 via the input filter 15.
  • control unit 1 is used also a control of the power section 17 of the cooker, for example the control of the Function 6 'Temperature in the oven'. This is done via a piezo sensor 4 for up-regulation (+) the temperature and a further piezo sensor 4 for regulating / controlling (-) temperature realized.
  • the set temperature is displayed in the known display 18, not shown, of the display 18. Overriding the temperature, for example> 250 ° C, in the oven is excluded by software. When the temperature is reduced, the two pulses are also determined after the pressure has been applied to the piezo sensor 4 to regulate the temperature, the time in between is measured and this is filled with counting pulses from the software of the processor 12 in the same way as the temperature increase, with a defined temperature decrease per counting pulse.
  • These piezo sensors 4, which control the function 6, can also switch on and off of the oven.
  • that on the piezo sensor 4 is used Adjusting the temperature generates a pulse when the pressure is applied to the control surface 2 used as a positive pulse to switch on.
  • the invention is within the scope of its claims and its The basic idea is changeable. This can be done using suitable hardware and / or software an additional security check is carried out. This applies in particular to one Childproof lock or a lock against multiple actuation. It is also possible that the sensors 4 frame the control panel 2, so that a matrix-like arrangement the sensors are omitted. Likewise, the sensors 4 can be directly under the printed film 5 be arranged so that the light source 7 is slightly offset from the film 5.
  • An integral evaluation of the signal areas (FIG. 5) of the sensor signals by the processor 12 makes it easier to distinguish between wanted and random, i.e. unintentional Operation of the control surface 2.
  • An older person becomes when the control surface is operated intentionally 2 exert only a small pressure to trigger a function 6, however for a long time. The pressure variation over a long time creates one correspondingly large integral area of the sensor signal.
  • one becomes comparable low pressure form a correspondingly small integral area over a short time, which does not trigger function 6. The latter arises e.g. when cleaning the control surface 2 by wiping in the operating area 3.
  • the control unit 1 can be easily adapted to the requirements of different household appliances. All that is required is a correspondingly functional design of the Processor 12 and if necessary a reorientation of the function symbols on the Control surface 2.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Push-Button Switches (AREA)
  • Electronic Switches (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Claims (17)

  1. Unité de commande pour la commutation et la commande des appareils ménagers, en particulier de gros appareils ménagers, l'unité de commande présentant une surface de commande, qui est exempte de perçages et se compose essentiellement d'une plaque indéformable, et présente un générateur de signaux sensible à la pression avec lequel un processeur pour le traitement des signaux électriques générés est connecté en série, caractérisée en ce que des zones d'utilisation (3) sont intégrées dans la surface de commande (2) auxquelles des capteurs (4) individuels, sensibles à la pression et qui sont reliés solidement à la surface de commande (2), sont affectés directement de sorte que les capteurs (4) sensibles à la pression, lorsqu'une pression ponctuelle est exercée pour sélectionner une fonction sur la surface de commande (2), génèrent des signaux (U1, U2) simultanés d'intensité différente qui sont amenés au processeur pour l'évaluation et l'affectation de la fonction (6) sélectionnée dans la zone d'utilisation (3).
  2. Unité de commande selon la revendication 1, caractérisée en ce que la surface de commande (2) se compose d'un matériau transparent vitreux.
  3. Unité de commande selon la revendication 2, caractérisée en ce qu'à l'intérieur de la zone d'utilisation (3) des symboles sont appliqués pour la fonction (6) qui sont éclairés par transmission au moyen de sources de lumière (7) affectées derrière la surface de commande (2).
  4. Unité de commande selon la revendication 1, caractérisée en ce que la surface de commande (2) se compose d'un matériau non transparent.
  5. Unité de commande selon la revendication 4, caractérisée en ce que le matériau non transparent est un matériau métallique.
  6. Unité de commande selon la revendication 4, caractérisée en ce que le matériau non transparent est une matière plastique.
  7. Unité de commande selon l'une ou plusieurs des revendications précédentes 4 à 6, caractérisée en ce que les symboles pour les fonctions (6) sont appliqués sur le matériau non transparent, l'affichage des fonctions (6) sélectionnées étant effectué sur un afficheur (18) externe.
  8. Unité de commande selon l'une ou plusieurs des revendications précédentes 1 à 7, caractérisée en ce que des capteurs piézoélectriques (4) sont reliés directement ou indirectement à la surface de commande (2) au moyen d'une fixation.
  9. Unité de commande selon la revendication 8, caractérisée en ce que la fixation indirecte est un ensemble de films (9).
  10. Unité de commande selon la revendication 8, caractérisée en ce que la liaison fixe directe s'effectue par l'intermédiaire d'une colle conductrice.
  11. Unité de commande selon l'une ou plusieurs des revendications précédentes 1 à 10, caractérisée en ce que les capteurs piézoélectriques (4) sont agencés en forme de matrice sur la face arrière de la surface de commande (2).
  12. Unité de commande selon l'une ou plusieurs des revendications précédentes 1 à 11, caractérisée en ce que pour chaque fonction (6), un capteur piézoélectrique (4) est agencé sur la face arrière de la surface de commande (2).
  13. Unité de commande selon l'une ou plusieurs des revendications précédentes 1 à 12, caractérisée en ce que pour chaque fonction (6), plus d'un capteur piézoélectrique (4) est agencé sur la face arrière de la surface de commande (2).
  14. Procédé pour la commutation et la commande des appareils ménagers, en particulier de gros appareils ménagers, dans lequel l'unité de commande présente une surface de commande, qui est exempte de perçages et se compose essentiellement d'une plaque indéformable, et présente un générateur de signaux sensible à la pression qui, lorsqu'une pression est exercée sur la surface de commande pour sélectionner une fonction, génère des signaux électriques qui sont amenés à un processeur pour le traitement, caractérisé en ce qu'en cas de pression ponctuelle dans une zone d'utilisation (3) sur la surface de commande (2), des capteurs (4) sensibles à la pression génèrent des signaux (U1, U2) simultanés d'intensité différente, qui sont évalués par le processeur (12) par une comparaison entre ceux-ci, le signal (U1) avec la plus grande intensité représentant le centre de pression de l'utilisation et donc la fonction (6) sélectionnée, après la détermination du signal (U1), celui est affecté à une fonction (6) stockée dans le processeur (12) et la fonction (6) reconnue par le processeur (12) comme utilisée est commutée et/ou commandée par l'intermédiaire d'une section de puissance (17) reliée électriquement au processeur (12).
  15. Procédé selon la revendication 14, caractérisé en ce que dans le processeur (12), l'agencement des capteurs (4) est doublé par un calcul en mémoire interne comme un motif pour déterminer la fonction (6) sélectionnée.
  16. Procédé selon la revendication 14, caractérisé en ce que dans le processeur (12), un filtre d'entrée (15) filtre des signaux involontaires générés par une utilisation inconsciente dans la zone d'utilisation (3).
  17. Procédé selon l'une ou plusieurs des revendications précédentes 14 à 16, caractérisé en ce que pour différencier l'utilisation volontaire et involontaire de la surface de commande (2), une évaluation intégrale des surfaces de signal des signaux (U1) a lieu dans le processeur 12.
EP97116612A 1996-11-06 1997-09-24 Unité pour la commutation et commande des appareils ménagers Expired - Lifetime EP0841521B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19645678A DE19645678C2 (de) 1996-11-06 1996-11-06 Bedieneinheit zum Schalten und Steuern von Haushaltsgeräten
DE19645678 1996-11-06

Publications (3)

Publication Number Publication Date
EP0841521A2 EP0841521A2 (fr) 1998-05-13
EP0841521A3 EP0841521A3 (fr) 2000-05-10
EP0841521B1 true EP0841521B1 (fr) 2002-11-13

Family

ID=7810768

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97116612A Expired - Lifetime EP0841521B1 (fr) 1996-11-06 1997-09-24 Unité pour la commutation et commande des appareils ménagers

Country Status (3)

Country Link
US (1) US5995877A (fr)
EP (1) EP0841521B1 (fr)
DE (2) DE19645678C2 (fr)

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JP6099301B2 (ja) * 2011-10-24 2017-03-22 富士機械製造株式会社 テープフィーダ
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EP0841521A3 (fr) 2000-05-10
EP0841521A2 (fr) 1998-05-13
DE19645678A1 (de) 1998-05-14
DE19645678C2 (de) 2000-05-25
DE59708708D1 (de) 2002-12-19
US5995877A (en) 1999-11-30

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