WO2015024688A1 - Work machine comprising a controller - Google Patents

Work machine comprising a controller Download PDF

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Publication number
WO2015024688A1
WO2015024688A1 PCT/EP2014/063228 EP2014063228W WO2015024688A1 WO 2015024688 A1 WO2015024688 A1 WO 2015024688A1 EP 2014063228 W EP2014063228 W EP 2014063228W WO 2015024688 A1 WO2015024688 A1 WO 2015024688A1
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WO
WIPO (PCT)
Prior art keywords
work machine
control unit
display panel
machine according
display device
Prior art date
Application number
PCT/EP2014/063228
Other languages
German (de)
French (fr)
Inventor
Michaela SCHÜRHOLZ
Dirk Jahn
Original Assignee
Putzmeister Engineering 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 Putzmeister Engineering Gmbh filed Critical Putzmeister Engineering Gmbh
Publication of WO2015024688A1 publication Critical patent/WO2015024688A1/en

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/344—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing
    • E04G21/0418—Devices for both conveying and distributing with distribution hose
    • E04G21/0436—Devices for both conveying and distributing with distribution hose on a mobile support, e.g. truck
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/3466—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on interferometric effect
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/348—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on the deformation of a fluid drop, e.g. electrowetting

Definitions

  • the invention relates to a working machine, in particular a mobile concrete pump, with an electronic control unit for a working member and units of the working machine, wherein the control unit has an optical display device with at least one display panel.
  • a working machine such as a mobile concrete pump has a concrete distributor boom as a working member and a typically hydraulically driven concrete pump as another unit.
  • the concrete boom is foldable composed of several mast segments and pivotally mounted on the machine.
  • the control unit is therefore expediently designed as a radio remote control, but thus dependent on an internal energy source, usually a rechargeable battery. In order to achieve the longest possible useful life for a given energy capacity, the power consumption of the control unit should therefore be as low as possible.
  • the optical display device is the essential energy consumer of the control unit.
  • the control unit is predominantly used outdoors in a wide variety of lighting conditions.
  • a good readability of the optical display device under all circumstances is indispensable for protection against possible incorrect operation.
  • conventional display devices such as those used in mobile telephones or portable computers (tablets and laptops) have a high energy consumption as self-illuminating display devices and, moreover, are difficult or impossible to read in direct sunlight. Proceeding from this, the object of the present invention is to provide an optical display device for the control unit of a working machine, which consumes little energy and is easy to read even in direct sunlight.
  • the at least one display panel has a multiplicity of electrically bistable and light-reflecting pixels.
  • An electrically bistable pixel only has to be supplied with electrical energy if its brightness or color value is to be changed.
  • the display device therefore does not constantly consume energy to maintain the displayed information, but only if it is changed.
  • the pixels are also formed light-reflecting, the display device is not self-luminous, but uses the ambient light for image display. In particular, in sunlight, the display is so contrasted with self-luminous displays high contrast and easy to read.
  • the control unit in unfavorable lighting conditions, it can be provided with a lighting means, for example an LED lamp, for illuminating the display device. Since this is used only exceptionally, the efficiency advantage of the inventive design of the display device is maintained.
  • the pixels of the display panel are electrophoretically switchable between different contrast levels and / or color values.
  • the display contains microcapsules with a mean diameter of about 40 ⁇ , the positively charged white particles and negatively charged black particles in one transparent viscous polymer.
  • the representation is changed by briefly applying an electrical voltage and then remains stable for a long time.
  • the shape and diameter of the microcapsules are irregular, but this is irrelevant, since each pixel of the display panel is composed of many individual microcapsules.
  • the display panel contains two different, layered fluids whose surface tension is locally variable by applying an electrical voltage.
  • the light transmittance of the individual pixels is influenced by the surface tension is changed by means of applied electrical voltage (electrical wetting).
  • the display panel has two reflective layers in an electrically mutually variable distance and an interferometric working modulator.
  • the distance between the two reflective layers is micromechanically changed and thus the light reflection is controlled by means of constructive and destructive interference.
  • control unit is designed as a radio remote control, which can be used by the operator away from the working machine.
  • the advantages of the solution according to the invention remain even with a machine-mounted control unit.
  • FIG. 2 is a schematic diagram of the image-forming elements of a display device of the radio remote control according to FIG. 1.
  • the working machine 10 shown in FIG. 1 can be operated remotely as a large manipulator in the form of a truck-mounted concrete pump 12 with a concrete distributor boom 14 by means of a radio remote control 16 via a radio link 18.
  • the radio remote control 16 is connected via the radio link 18 with a machine-side control point 20.
  • a control device can also be used for other construction machines and working devices, for example spray robots and mixer pumps.
  • the radio remote control 16 has a plurality of control elements, for example two joysticks 22, 22 'for controlling the concrete distributor mast 14, an emergency stop button 24 for interrupting the pumping and mast functions, buttons 26 for switching the drive motor on and off the concrete pump, push button 28 for increasing or decreasing the engine speed and thus the flow rate and the like.
  • a display device 30 is centrally located in the field of view of the operator and represents the essential operating parameters graphically and / or numerically.
  • the radio remote control can also be designed as a so-called portable display, a large-scale, portable display device with a touch-sensitive screen and controls displayed thereon.
  • the display panel of the display device 30 has a plurality of electrically bistable and light-reflecting pixels, which are illustrated schematically in FIG.
  • the electrically bistable pixels only need to be supplied with electrical energy if their brightness or color values are to be changed.
  • the display device 30 therefore does not constantly consume energy to maintain the displayed information, but only if it is changed. Since the pixels are also designed to reflect light, the display device 30 is not self-luminous, but uses the ambient light for image display.
  • the display device 30 is thus rich in contrast and easy to read in contrast to self-illuminating displays.
  • the pixels are formed in this embodiment in each case from microcapsules 32-32 "with a mean diameter of about 40 ⁇ containing positively charged black particles 34 and negatively charged white particles 36 in a transparent, viscous polymer This state can remain stable for up to several weeks without energy supply, although the shape and the diameter of the microcapsules 32-32 "is irregular, but this is not important because each pixel of the display device 30 is composed of a plurality of microcapsules.
  • the invention relates to a working machine 10, in particular a mobile concrete pump, with an electronic control unit 16 for a working member 14 and units of the working machine 10, wherein the control unit 16 has an optical display device 30 with at least one display panel.
  • the at least one display Field has a plurality of electrically bistable and light-reflecting pixels 32-32 ".

Abstract

The invention relates to a work machine (10), in particular a mobile concrete pump, comprising an electronic control unit (16) for a working element (14) and units of the work machine (10), the control unit (16) having an optical display device (30) with at least one display field. In order to display information with maximum contrast and while saving energy, the at least one display field comprises a plurality of electrically bistable and light-reflecting image points (32 - 32'').

Description

Arbeitsmaschine mit Steuereinrichtung Beschreibung  Work machine with control device Description
Die Erfindung betrifft eine Arbeitsmaschine, insbesondere eine fahrbare Betonpumpe, mit einer elektronischen Steuereinheit für ein Arbeitsorgan und Aggregate der Arbeitsmaschine, wobei die Steuereinheit eine optische Anzeigeeinrichtung mit mindestens einem Anzeigefeld aufweist. The invention relates to a working machine, in particular a mobile concrete pump, with an electronic control unit for a working member and units of the working machine, wherein the control unit has an optical display device with at least one display panel.
Eine Arbeitsmaschine wie eine fahrbare Betonpumpe weist einen Betonverteilermast als Arbeitsorgan und eine typischerweise hydraulisch angetriebene Betonpumpe als weiteres Aggregat auf. Der Betonverteilermast ist faltbar aus mehreren Mastsegmenten zusammengesetzt und schwenkbar auf der Arbeitsmaschine angeordnet. Durch geeignete Manipulation des Betonvertei- lermasts kann der Beton an beliebiger Stelle des Arbeitsbereichs des Masts ausgebracht werden. Dabei ist es sinnvoll, dass sich die Bedienperson relativ frei bewegen kann, um die Ausbringstelle hinreichend genau ansteuern zu können. Die Steuereinheit ist daher zweckmäßig als Funkfernsteuerung ausgebildet, damit jedoch von einer internen Energiequelle, in der Regel ein wiederaufladbarer Akkumulator, abhängig. Um eine möglichst lange Nutzdauer bei gegebener Energiekapazität zu erreichen, sollte der Energieverbrauch der Steuereinheit daher so gering wie möglich sein. Neben der Sendeeinheit für die Fernsteuersignale ist die optische Anzeigeeinrichtung der wesentliche Energieverbraucher der Steuereinheit. Weiterhin wird die Steuereinheit weit überwiegend im Freien bei unterschiedlichsten Lichtverhältnissen verwendet. Eine gute Ablesbarkeit der optischen Anzeigeeinrichtung unter allen Umständen ist zum Schutz vor einer möglichen Fehlbedienung unverzichtbar. Herkömmliche Anzeigeeinrichtungen, wie sie beispielsweise auch in Mobiltelefonen oder tragbaren Computern (Tablets und Laptops) Verwendung finden weisen jedoch als selbstleuchtende Anzeigeeinrichtungen einen hohen Energieverbrauch auf und sind darüber hinaus bei direkter Sonneneinstrahlung nur schwer oder gar nicht ablesbar. Ausgehend hiervon besteht die Aufgabe der vorliegenden Erfindung darin, eine optische Anzeigeeinrichtung für die Steuereinheit einer Arbeitsmaschine bereitzustellen, die wenig Energie verbraucht und auch bei direkter Sonneneinstrahlung gut ablesbar ist. A working machine such as a mobile concrete pump has a concrete distributor boom as a working member and a typically hydraulically driven concrete pump as another unit. The concrete boom is foldable composed of several mast segments and pivotally mounted on the machine. By suitable manipulation of the concrete distributor mast, the concrete can be applied anywhere in the working area of the mast. It makes sense that the operator can move relatively freely in order to control the discharge point sufficiently accurate. The control unit is therefore expediently designed as a radio remote control, but thus dependent on an internal energy source, usually a rechargeable battery. In order to achieve the longest possible useful life for a given energy capacity, the power consumption of the control unit should therefore be as low as possible. In addition to the transmitting unit for the remote control signals, the optical display device is the essential energy consumer of the control unit. Furthermore, the control unit is predominantly used outdoors in a wide variety of lighting conditions. A good readability of the optical display device under all circumstances is indispensable for protection against possible incorrect operation. However, conventional display devices, such as those used in mobile telephones or portable computers (tablets and laptops), have a high energy consumption as self-illuminating display devices and, moreover, are difficult or impossible to read in direct sunlight. Proceeding from this, the object of the present invention is to provide an optical display device for the control unit of a working machine, which consumes little energy and is easy to read even in direct sunlight.
Zur Lösung dieser Aufgabe wird die in Patentanspruch 1 angegebene Merkmalskombination vorgeschlagen. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen. To solve this problem, the feature combination specified in claim 1 is proposed. Advantageous embodiments and modifications of the invention will become apparent from the dependent claims.
Die erfindungsgemäße Lösung sieht vor, dass das mindestens eine Anzeigefeld eine Vielzahl von elektrisch bistabilen und lichtreflektierenden Bildpunkten aufweist. Ein elektrisch bistabiler Bildpunkt muss nur mit elektrischer Energie beaufschlagt werden, wenn sein Helligkeits- oder Farbwert verändert werden soll. Die Anzeigeeinrichtung verbraucht daher nicht ständig Energie zur Aufrechterhaltung der angezeigten Information, sondern nur dann, wenn diese verändert wird. Da die Bildpunkte zudem lichtreflektierend ausgebildet sind, ist die Anzeigeeinrichtung nicht selbstleuchtend, sondern nutzt das Umgebungslicht zur Bilddarstellung. Insbesondere bei Sonneneinstrahlung ist die Anzeigeeinrichtung damit im Gegensatz zu selbstleuchtenden Anzeigen kontrastreich und gut ablesbar. Für die gelegentliche Verwendung der Steuereinheit bei ungünstigen Lichtverhältnissen kann sie mit einem Leuchtmittel, beispielsweise einer LED Lampe, zur Beleuchtung der Anzeigeeinrichtung versehen sein. Da diese nur ausnahmsweise eingesetzt wird, bleibt der Effizienzvorteil der erfindungsgemäßen Gestaltung der Anzeigeeinrichtung erhalten. The solution according to the invention provides that the at least one display panel has a multiplicity of electrically bistable and light-reflecting pixels. An electrically bistable pixel only has to be supplied with electrical energy if its brightness or color value is to be changed. The display device therefore does not constantly consume energy to maintain the displayed information, but only if it is changed. Since the pixels are also formed light-reflecting, the display device is not self-luminous, but uses the ambient light for image display. In particular, in sunlight, the display is so contrasted with self-luminous displays high contrast and easy to read. For the occasional use of the control unit in unfavorable lighting conditions, it can be provided with a lighting means, for example an LED lamp, for illuminating the display device. Since this is used only exceptionally, the efficiency advantage of the inventive design of the display device is maintained.
Gemäß einer ersten alternativen Ausgestaltung der Erfindung sind die Bildpunkte des Anzeigefelds elektrophoretisch zwischen unterschiedlichen Kontraststufen und/oder Farbwerten schaltbar. Dabei enthält das Anzeigefeld Mikro kapseln mit einem mittleren Durchmesser von ca. 40 μιτι, die positiv geladene weiße Partikel und negativ geladene schwarze Partikel in einem transparenten zähflüssigen Polymer enthalten. Die Darstellung wird durch kurzzeitiges Anlegen einer elektrischen Spannung verändert und bleibt dann lange Zeit stabil. Form und Durchmesser der Mikrokapseln sind unregelmäßig, was jedoch ohne Bedeutung ist, da sich jeder Bildpunkt des Anzeigefelds aus vielen einzelnen Mikrokapseln zusammensetzt. According to a first alternative embodiment of the invention, the pixels of the display panel are electrophoretically switchable between different contrast levels and / or color values. In this case, the display contains microcapsules with a mean diameter of about 40 μιτι, the positively charged white particles and negatively charged black particles in one transparent viscous polymer. The representation is changed by briefly applying an electrical voltage and then remains stable for a long time. The shape and diameter of the microcapsules are irregular, but this is irrelevant, since each pixel of the display panel is composed of many individual microcapsules.
Gemäß einer zweiten alternativen Ausgestaltung der Erfindung enthält das Anzeigefeld zwei unterschiedliche, übereinander geschichtete Fluide, deren Oberflächenspannung durch Anlegen einer elektrischen Spannung lokal veränderbar ist. Die Lichtdurchlässigkeit der einzelnen Bildpunkte wird dabei beeinflusst, indem die Oberflächenspannung mittels angelegter elektrischer Spannung verändert wird (Elektrobenetzung). Damit lässt sich ein farbiges und schnelles reflektives Anzeigefeld mit hohem Kontrast und geringem Energieverbrauch herstellen, dessen mögliche Schaltgeschwindigkeit sogar eine Videowiedergabe erlaubt. According to a second alternative embodiment of the invention, the display panel contains two different, layered fluids whose surface tension is locally variable by applying an electrical voltage. The light transmittance of the individual pixels is influenced by the surface tension is changed by means of applied electrical voltage (electrical wetting). This makes it possible to produce a colored and fast reflective display panel with high contrast and low energy consumption, the possible switching speed of which even allows video playback.
Gemäß einer dritten alternativen Ausgestaltung der Erfindung weist das Anzeigefeld zwei reflektierende Lagen in einem elektrisch zueinander veränderbaren Abstand und einen interferometrisch arbeitenden Modulator auf. Dabei wird der Abstand der zwei reflektierenden Schichten mikromechanisch verändert und damit die Lichtreflexion mittels konstruktiver und destruktiver Interferenz gesteuert. According to a third alternative embodiment of the invention, the display panel has two reflective layers in an electrically mutually variable distance and an interferometric working modulator. In this case, the distance between the two reflective layers is micromechanically changed and thus the light reflection is controlled by means of constructive and destructive interference.
Bevorzugt ist die Steuereinheit als Funkfernsteuerung ausgebildet, die von der Bedienperson entfernt von der Arbeitsmaschine verwendet werden kann. Die Vorteile der erfindungsgemäßen Lösung bleiben jedoch auch bei einer maschinenfest angeordneten Steuereinheit erhalten. Preferably, the control unit is designed as a radio remote control, which can be used by the operator away from the working machine. However, the advantages of the solution according to the invention remain even with a machine-mounted control unit.
Im Folgenden wird die Erfindung anhand eines in der Zeichnung in schemati- scher Weise dargestellten Ausführungsbeispiels näher erläutert. Es zeigt Fig. 1 eine fahrbare Betonpumpe mit einem Verteilermast und eine diese steuernde Funkfernsteuerung; und In the following, the invention will be explained in more detail with reference to an embodiment shown schematically in the drawing. It shows 1 a mobile concrete pump with a distribution boom and a radio remote control controlling it; and
Fig. 2 eine Prinzipdarstellung der bildformenden Elemente einer Anzeigeeinrichtung der Funkfernsteuerung gemäß Fig. 1 . 2 is a schematic diagram of the image-forming elements of a display device of the radio remote control according to FIG. 1.
Die in Fig. 1 gezeigte Arbeitsmaschine 10 ist als Großmanipulator in Form einer Autobetonpumpe 12 mit Betonverteilermast 14 mittels einer Funkfernsteuerung 16 über eine Funkstrecke 18 fernbedienbar. Die Funkfernsteuerung 16 ist über die Funkstrecke 18 mit einer maschinenseitigen Kontrollstelle 20 verbunden. Eine solche Steuereinrichtung lässt sich grundsätzlich auch für andere Baumaschinen und Arbeitsgeräte, beispielsweise Spritzroboter und Mischerpumpen einsetzen. The working machine 10 shown in FIG. 1 can be operated remotely as a large manipulator in the form of a truck-mounted concrete pump 12 with a concrete distributor boom 14 by means of a radio remote control 16 via a radio link 18. The radio remote control 16 is connected via the radio link 18 with a machine-side control point 20. In principle, such a control device can also be used for other construction machines and working devices, for example spray robots and mixer pumps.
Die Funkfernsteuerung 16 weist eine Mehrzahl von Steuerelementen auf, beispielsweise zwei Joysticks 22, 22' für die Steuerung des Betonverteiler- masts 14, einen Not-Aus-Taster 24 zur Unterbrechung der Pump- und Mastfunktionen, Taster 26 zum Ein- und Ausschalten des Antriebsmotors der Betonpumpe, Taster 28 zum Erhöhen oder Verringern der Motordrehzahl und damit der Fördermenge und dergleichen mehr. Eine Anzeigeeinrichtung 30 ist zentral im Blickfeld der Bedienperson angeordnet und stellt die wesentlichen Betriebsparameter graphisch und/oder numerisch dar. Alternativ zu der dargestellten Ausführungsform mit einer Mehrzahl elektromechanischer Schalter und Steuerelemente kann die Funkfernsteuerung auch als sogenanntes portable Display ausgebildet sein, eine großflächige, tragbare Anzeigeeinrichtung mit einem berührungsempfindlichen Bildschirm und darauf graphisch dargestellten Steuerelementen. Je großflächiger die verwendete Anzeigeeinrichtung, desto stärker kommt deren energieeffiziente Ausbildung gegenüber herkömmlichen, selbstleuchtenden Anzeigeeinrichtungen zum Tragen. Um die Infornnationen sowohl energiesparend als auch möglichst kontrastreich darzustellen, weist das Anzeigefeld der Anzeigeeinrichtung 30 eine Vielzahl von elektrisch bistabilen und lichtreflektierenden Bildpunkten auf, die in Fig. 2 schematisch veranschaulicht sind. Die elektrisch bistabilen Bildpunkte müssen nur mit elektrischer Energie beaufschlagt werden, wenn ihre Hel- ligkeits- oder Farbwerte verändert werden sollen. Die Anzeigeeinrichtung 30 verbraucht daher nicht ständig Energie zur Aufrechterhaltung der angezeigten Information, sondern nur dann, wenn diese verändert wird. Da die Bildpunkte zudem lichtreflektierend ausgebildet sind, ist die Anzeigeeinrichtung 30 nicht selbstleuchtend, sondern nutzt das Umgebungslicht zur Bilddarstellung. Insbesondere bei Sonneneinstrahlung ist die Anzeigeeinrichtung 30 damit im Gegensatz zu selbstleuchtenden Anzeigen kontrastreich und gut ablesbar. Die Bildpunkte sind bei diesem Ausführungsbeispiel jeweils aus Mikrokapseln 32 - 32" mit einem mittleren Durchmesser von ca. 40 μιτι ausgebildet, die positiv geladene schwarze Partikel 34 und negativ geladene weiße Partikel 36 in einem transparenten, zähflüssigen Polymer enthalten. Die Darstellung wird durch kurzzeitiges Anlegen einer elektrischen Gleichspannung verändert, wodurch die jeweils gegenpoligen Partikel 34 bzw. 36 angezogen werden. Dieser Zustand kann ohne Energiezufuhr bis zu mehreren Wochen lang stabil bleiben. Die Form und der Durchmesser der Mikrokapseln 32 - 32" ist zwar unregelmäßig, jedoch hat dies keine Bedeutung, da sich jeder Bildpunkt der Anzeigeeinrichtung 30 aus einer Vielzahl von Mikrokapseln zusammensetzt. The radio remote control 16 has a plurality of control elements, for example two joysticks 22, 22 'for controlling the concrete distributor mast 14, an emergency stop button 24 for interrupting the pumping and mast functions, buttons 26 for switching the drive motor on and off the concrete pump, push button 28 for increasing or decreasing the engine speed and thus the flow rate and the like. A display device 30 is centrally located in the field of view of the operator and represents the essential operating parameters graphically and / or numerically. Alternatively to the illustrated embodiment with a plurality of electromechanical switches and controls, the radio remote control can also be designed as a so-called portable display, a large-scale, portable display device with a touch-sensitive screen and controls displayed thereon. The larger the display used, the more effective is their energy-efficient design over conventional, self-luminous display devices to fruition. In order to present the information both energy-saving and as high-contrast as possible, the display panel of the display device 30 has a plurality of electrically bistable and light-reflecting pixels, which are illustrated schematically in FIG. The electrically bistable pixels only need to be supplied with electrical energy if their brightness or color values are to be changed. The display device 30 therefore does not constantly consume energy to maintain the displayed information, but only if it is changed. Since the pixels are also designed to reflect light, the display device 30 is not self-luminous, but uses the ambient light for image display. Particularly in the case of solar radiation, the display device 30 is thus rich in contrast and easy to read in contrast to self-illuminating displays. The pixels are formed in this embodiment in each case from microcapsules 32-32 "with a mean diameter of about 40 μιτι containing positively charged black particles 34 and negatively charged white particles 36 in a transparent, viscous polymer This state can remain stable for up to several weeks without energy supply, although the shape and the diameter of the microcapsules 32-32 "is irregular, but this is not important because each pixel of the display device 30 is composed of a plurality of microcapsules.
Zusammenfassend ist folgendes festzuhalten: Die Erfindung betrifft eine Arbeitsmaschine 10, insbesondere eine fahrbare Betonpumpe, mit einer elektronischen Steuereinheit 16 für ein Arbeitsorgan 14 und Aggregate der Arbeitsmaschine 10, wobei die Steuereinheit 16 eine optische Anzeigeeinrichtung 30 mit mindestens einem Anzeigefeld aufweist. Um eine möglichst kontrastreiche und energiesparende Anzeige von Informationen zu ermöglichen, wird gemäß der Erfindung vorgeschlagen, dass das mindestens eine Anzei- gefeld eine Vielzahl von elektrisch bistabilen und lichtreflektierenden Bildpunkten 32 - 32" aufweist. In summary, the following should be noted: The invention relates to a working machine 10, in particular a mobile concrete pump, with an electronic control unit 16 for a working member 14 and units of the working machine 10, wherein the control unit 16 has an optical display device 30 with at least one display panel. In order to enable a high-contrast and energy-saving display of information, it is proposed according to the invention that the at least one display Field has a plurality of electrically bistable and light-reflecting pixels 32-32 ".

Claims

Patentansprüche claims
1 . Arbeitsmaschine (10), insbesondere fahrbare Betonpumpe, mit einer elektronischen Steuereinheit (16) für ein Arbeitsorgan (14) und Aggregate der Arbeitsmaschine (10), wobei die Steuereinheit (16) eine optische Anzeigeeinrichtung (30) mit mindestens einem Anzeigefeld aufweist, dadurch gekennzeichnet, dass das mindestens eine Anzeigefeld eine Vielzahl von elektrisch bistabilen und lichtreflektierenden Bildpunkten (32 - 32") aufweist. 1 . Work machine (10), in particular mobile concrete pump, with an electronic control unit (16) for a working member (14) and units of the working machine (10), wherein the control unit (16) has a visual display device (30) with at least one display panel, characterized in that the at least one display panel has a multiplicity of electrically bistable and light-reflecting pixels (32-32 ").
2. Arbeitsmaschine nach Anspruch 1 , dadurch gekennzeichnet, dass die Bildpunkte (32 - 32") des Anzeigefelds elektrophoretisch zwischen unterschiedlichen Kontraststufen und/oder Farbwerten schaltbar sind. 2. Work machine according to claim 1, characterized in that the pixels (32-32 ") of the display panel are electrophoretically switchable between different contrast levels and / or color values.
3. Arbeitsmaschine nach Anspruch 1 , dadurch gekennzeichnet, dass das Anzeigefeld zwei unterschiedliche, übereinander geschichtete Fluide enthält, deren Oberflächenspannung durch Anlegen einer elektrischen Spannung lokal veränderbar ist. 3. Work machine according to claim 1, characterized in that the display panel contains two different, superimposed fluids whose surface tension is locally variable by applying an electrical voltage.
4. Arbeitsmaschine nach Anspruch 1 , dadurch gekennzeichnet, dass das Anzeigefeld zwei reflektierende Lagen in einem elektrisch zueinander veränderbaren Abstand und einen interferometrisch arbeitenden Modulator aufweist. 4. Work machine according to claim 1, characterized in that the display panel has two reflective layers in an electrically mutually variable distance and an interferometric working modulator.
5. Arbeitsmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Steuereinheit (16) als Funkfernsteuerung ausgebildet ist. 5. Work machine according to one of claims 1 to 4, characterized in that the control unit (16) is designed as a radio remote control.
6. Arbeitsmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Steuereinheit maschinenfest angeordnet ist. Arbeitsmaschine nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Steuereinheit (16) ein Leuchtmittel zum Beleuchten der optischen Anzeigeeinrichtung (30) aufweist. 6. Work machine according to one of claims 1 to 4, characterized in that the control unit is arranged fixed to the machine. Work machine according to one of claims 1 to 6, characterized in that the control unit (16) has a lighting means for illuminating the optical display device (30).
PCT/EP2014/063228 2013-08-23 2014-06-24 Work machine comprising a controller WO2015024688A1 (en)

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