EP2844804B2 - Unité de controle d'une machine de construction - Google Patents

Unité de controle d'une machine de construction Download PDF

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Publication number
EP2844804B2
EP2844804B2 EP13717715.0A EP13717715A EP2844804B2 EP 2844804 B2 EP2844804 B2 EP 2844804B2 EP 13717715 A EP13717715 A EP 13717715A EP 2844804 B2 EP2844804 B2 EP 2844804B2
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EP
European Patent Office
Prior art keywords
signals
control
construction machine
actuation
display unit
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Active
Application number
EP13717715.0A
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German (de)
English (en)
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EP2844804A1 (fr
EP2844804B1 (fr
Inventor
Martin Werner
Timo Loew
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Bomag GmbH and Co OHG
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Bomag GmbH and Co OHG
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2025—Particular purposes of control systems not otherwise provided for
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/26—Indicating devices
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C25/00—Arrangements for preventing or correcting errors; Monitoring arrangements

Definitions

  • the present application relates to a device for operating a construction machine, comprising a control panel with a number of operating elements for controlling actuators of the construction machine in order to carry out the desired functions of the construction machine, the control panel generating first signals relating to the control of the actuators, a control and a control unit for controlling the device, the control and control unit which converts the first signals into actuation signals with which the actuators can be actuated and the first signals are transmitted from the control panel to the control and control unit using first transmission means, and a display unit , with which the function currently performed by the construction machine can be visualized in normal operation, the first signals and / or the actuation signals being transmitted to the display unit using second transmission means.
  • Such construction machines are so-called stabilizers or recyclers, with which floor sections such as road surfaces can be processed.
  • These construction machines have a control panel in which a number of control elements are arranged, for example levers, pushbuttons, potentiometers or rotary switches.
  • a number of different actuators are usually used in a construction machine, for example hydraulic cylinders, pneumatic cylinders or electric motors, all of which are actuated from the control panel.
  • a construction machine can carry out a multitude of functions, which sometimes require the actuation of several operating elements, it is not always clear which function the construction machine is currently performing.
  • a display unit is provided on which the function currently being carried out is visually represented.
  • a construction machine with such a display unit is for example in the EP 1 959 056 A2 described.
  • the first signals generated by the operating elements must be converted into different actuation signals in order to be able to actuate the actuators.
  • the actuation signals are pressure signals of the hydraulic fluid used, whereas in the case of electric motors, corresponding electrical signals act as actuation signals.
  • a control and monitoring unit is provided, which converts the first signals generated by the control panel into the actuation signals required in each case.
  • the control and monitoring unit does not necessarily have to convert the type of signal directly, for example from an electrical signal to a pressure signal, but can maintain the type of signal.
  • the first signals are usually electrical signals.
  • the control and monitoring unit can prepare the first signals in such a way that the electrical actuation signals control a conversion unit which, for example, generates the pressure signals with which hydraulic cylinders can be actuated.
  • the control and monitoring unit indirectly converts the first signals into actuation signals that can be used by the actuators, since the type of signal still has to be changed. If the actuator is an electric motor, the electrical first signal can be used directly to control the electric motor, so that no conversion of the signal type is necessary at all.
  • the first signals are transmitted from the control panel to the control and monitoring unit by means of first transmission means are usually designed as cables, but the transmission means can also work wirelessly.
  • Either the actuation signals generated by the control and monitoring unit and / or the first signals are used to visualize the function of the construction machines currently being carried out, the latter possibly having to be prepared for the display unit.
  • the actuation signals and / or the first signals are transmitted from the control and monitoring unit to the display unit using second transmission means.
  • the EP 1 627 774 B1 discloses a construction machine with one or more operating consoles, which can have a display, it being provided that simple redundancy is provided between the operating elements of the operating consoles. In the event of a malfunction, the failed control element can be bypassed using the display.
  • the construction machines mentioned above are used in particular in road construction. If asphalt is used to produce the road surface, it must be processed at a certain temperature. The asphalt is usually brought to the construction site with a large number of trucks with the certain temperature, but the temperature cannot be maintained over a longer period of time. The asphalt provided can therefore only be processed within a narrow time window. If the construction machine is no longer fully functional as a result of a malfunction in the first transmission means, the time window can no longer be adhered to and the asphalt can no longer be processed, which results in high economic damage. Under these circumstances it is very important to maintain the functional use of the construction machine.
  • the object of the present invention is therefore to provide a construction machine of the type mentioned at the outset, which can also be used in a functionally appropriate manner if the first transmission means are faulty.
  • the display unit in the event of a fault in the first signals or the first transmission means, the display unit generates second signals relating to the actuation of the actuators, which are transmitted to the control and monitoring unit by means of the second transmission means and are transmitted by the control unit. and control unit can be converted into actuation signals.
  • the configuration of the device according to the invention enables the construction machines to be used in a functionally appropriate manner even when the first transmission means are disturbed and thus no usable first signals are transmitted to the control and monitoring unit. If cables are used as the first transmission medium, the cables can be damaged quickly due to the harsh environmental conditions in which the construction machines are used, and due to corrosion and / or thermal stresses.
  • the control and monitoring unit checks and coordinates the signals and decides whether the first signals are sufficiently plausible or not. If not, the second signals generated by the display unit are used to operate the construction machine. Converting the first or second signal means that these signals can be used to control the actuators. A mandatory conversion is not necessary, for example when an electric motor can be controlled directly with the electrical first and / or second signals. In this case, the task of the control and monitoring unit is limited to checking the plausibility of the first signal and, depending on the result of the check, providing a second signal.
  • a redundancy is consequently created which also makes it possible to operate the construction machines in a functionally correct manner with the aid of the display unit when the first signals no longer arrive at the control and monitoring unit in a usable state.
  • the display units usually have pushbutton switches or similar operating elements which can be used to operate the construction machine in the event of a fault in the first signals and / or the first transmission means. The reliability of the construction machine is thus increased. A contribution is made to the planned processing of the floor section, for example the roadway, so that unscheduled delays and the associated additional costs are avoided or at least significantly reduced.
  • a further development of the device according to the invention is characterized in that the display unit has operating segments corresponding to one or more operating elements of the control panel.
  • the construction machine operator does not have to change when the first transmission means are disturbed. He can immediately control the construction machine with the display unit, which he can use in the same way as the control panel. This makes a contribution to operational safety, since the likelihood of incorrect operation is reduced.
  • the operating segments advantageously include pushbutton switches, levers and / or rotary switches.
  • an image largely corresponding to the control panel can be created, so that not only the functions but also the manner in which the control panel is actuated corresponds to the actuation of the display unit. In this respect, the differences in operation between the control panel and the display unit are reduced , which in turn prevents incorrect operation.
  • the display unit displays one or more graphic symbols which correspond to one or more operating elements, the display unit assigning the pushbutton switches, levers and / or rotary switches to the graphic symbols.
  • the assignment can be realized by lines or arrows.
  • the display unit can be made compact, since the available pushbutton switches, levers and / or rotary switches can be assigned to several graphic symbols, which are displayed at different times according to the desired function.
  • the graphic symbols can be easily changed and adapted to the desired function. Consequently, it is possible to display a large number of functions by means of the display unit according to the invention and to be able to assign a few pushbuttons, rotary switches and / or levers.
  • the display unit according to the invention has a touch-sensitive surface.
  • segments of the surface are stored with graphic symbols representing the executable function.
  • the touch-sensitive surface can also be designed that rotary switches can be simulated. In this respect, it is no longer necessary to provide pushbuttons and rotary switches that are physically present in the display unit. Almost all functions that can be performed by the construction machine can be displayed and selected using the display unit. The flexibility of the display unit is again significantly increased and the ease of use is increased.
  • the second transmission means are preferably designed as a CAN bus.
  • a CAN bus has the advantage that a large number of signals can be transmitted between the control and monitoring unit and the display unit without having to use a complex cable harness with a large overall cable length.
  • Another aspect of the present invention relates to a construction machine which comprises a device according to one of the preceding exemplary embodiments.
  • the advantages and technical effects that have been presented for the device apply equally to the construction machine.
  • the step of visualizing the function currently carried out by the construction machine is carried out according to the invention only in normal operation, while the steps of generating second signals relating to the actuation of the actuators and transmitting the second signals to the control and monitoring unit only when the first transmission means malfunctions be carried out. As far as possible, the remaining steps are carried out in both operating modes.
  • the control and monitoring unit also takes on the task of checking the plausibility of the first signals and, if necessary, of causing the display unit to generate plausible second signals if the construction machine no longer uses the first signals can be operated correctly.
  • FIG. 1 A construction machine 10 is shown, which can be operated with a device 18 according to the invention for operating the construction machine 10, which is shown in FIG Figure 1 is not shown (cf. Figures 2 and 3 ).
  • the stabilizer includes a work roll that is in Figure 1 is not visible since it is surrounded by a protective hood 14.
  • the work roll has a substantially cylindrical shape and is rotatably mounted on the construction machine 10 about its cylinder axis and can be adjusted in height in the direction of the arrow P 1 .
  • the construction machine 10 comprises a drive unit 16 with which the construction machine 10 itself can be moved and the work roll can be set in rotation.
  • the work roll In the in Figure 1 In the position shown, the work roll is raised and not in contact with the soil section 12 to be worked. This position of the work roll is assumed, for example, in the transport mode of the construction machine 10, whereas the work roll is lowered in the work mode or tillage mode and into the floor section 12 with the desired one Immersed deep.
  • the construction machine 10 is moved in the direction of the arrow P 2 (forward direction) over the base section 12.
  • FIG 2 is a device 18 according to the invention for operating a construction machine 10, for example the one shown in FIG Figure 1 shown stabilizer, shown in normal operation.
  • the device 18 comprises an operating panel 20 in which a number of operating elements 22 are arranged.
  • the controls 22 may include push buttons, levers, potentiometers, rotary switches, and the like.
  • the control panel 20 is connected to a control and monitoring unit 26 via first transmission means 24, which in turn communicates with a display unit 30 via second transmission means 28.
  • the first and the second transmission means 24, 28 are usually designed as cables or CAN buses, but a wireless configuration is also possible.
  • the control and monitoring unit 26 is connected to an actuator 34 by suitable third transmission means 32.
  • the actuator 34 is designed as a hydraulic cylinder 36, which has an actuator 38, here a valve 40, which can be controlled by the control and monitoring unit 26.
  • Another actuator 34 can be the drive unit 16.
  • the construction machine operator actuates the operating elements 22 of the control panel 20 in order to initiate the desired function of the construction machine 10, for which purpose the respective actuators 34 are controlled accordingly.
  • the control panel 20 generates first signals S 1 which are related to the actuation of the actuators 34 and which are transmitted to the control and monitoring unit 26 by means of the first transmission means 24.
  • the control and monitoring unit 26 converts the first signals S 1 into actuation signals S B with which the actuators 34 can be triggered.
  • the first signals S 1 can be designed, for example, as analog or digital electrical signals, while in the illustrated case the actuation signals S B used to control the valve 40 must be present on the valve 40 as hydraulic or pneumatic signals.
  • the actuation signals S B have to leave the control and monitoring unit 26 as hydraulic or pneumatic.
  • This conversion unit can be integrated in the control and monitoring unit 26.
  • the third transmission means 32 are designed as a hydraulic or pneumatic line.
  • the function of the construction machine 10 just initiated by the construction machine operator is visualized by the display unit 30 and displayed in a display section 42 in order to give the construction machine operator control over whether he has actually selected the desired function.
  • the display unit 30 has a plurality of operating segments 44 which, for example, comprise push buttons, levers and / or rotary switches which are arranged around the display section 42.
  • the control and monitoring unit 26 forwards the first signals S 1 to the display unit 30. Should it be necessary, the control and monitoring unit 26 can process the first signals S 1 in such a way that the display unit 30 can process them.
  • the display unit 30 visualizes the selected function that is currently being carried out by the construction machine 10. Depending on the type of actuation signals S B , these can also be used by the display unit 30 in order to display the function currently being carried out by the construction machine 10.
  • FIG 3 the case of a malfunction of the first transmission means 24 is shown, for example caused by breakage or damage to the cable, so that no or no correct communication between the control panel 20 and the control and monitoring unit 26 is possible.
  • This is expressed, for example, by a change in the electrical resistance of the cable, which is noticed by the control and monitoring unit 26 and is displayed, for example, by means of optical and / or acoustic signals.
  • the control and monitoring unit 26 indicates the fault with two exclamation marks and switches the display unit 30 to the fault mode.
  • the display unit 30 displays one or more graphic symbols 46 in the fault mode, which are modeled on the operating elements 22 of the control panel 20.
  • a rotary switch which is marked with a dashed circle in the control panel 20, is displayed in the display section 42 by means of a corresponding graphic symbol 46.
  • the construction machine operator can have selected the desired operating element 22 in a previous step, not shown, in which the display unit 30 represents all control elements 22 present in the control panel 20 with the corresponding graphic symbols 46 and assigns them to the control segments 44 of the display unit 30.
  • the various selectable positions of the operating element 22 are modeled on the graphic symbol 46 and are assigned to the operating segments 44 via dashed lines. If the construction machine operator now wants to bring the graphic symbol 46 into a specific position, he actuates the corresponding operating segment 44. This generates second signals S 2 which are transmitted to the control and monitoring unit 26 via the second transmission means 28, where they replace the faulty ones first signals S 1 are converted into the corresponding actuation signals S B , and the actuator 34 is actuated as if the construction machine operator had actuated the corresponding operating elements 22 of the control panel 20.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Operation Control Of Excavators (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Mechanical Control Devices (AREA)

Claims (8)

  1. Dispositif de commande d'un engin de chantier (10), comprenant :
    - un pupitre de commande (20) comprenant plusieurs éléments de commande (22) pour la commande d'actionneurs (34) de l'engin de chantier (10), pour effectuer les fonctions désirées de l'engin de chantier (10), le pupitre de commande (20) générant des premiers signaux (S1) relatifs à l'actionnement des actionneurs (34),
    - une unité de contrôle et de surveillance (26) pour contrôler le dispositif, l'unité de contrôle et de surveillance (26) convertissant les premiers signaux (S1) en signaux d'actionnement (SB) au moyen desquels les actionneurs (34) peuvent être actionnés et les premiers signaux (S1) étant transmis du pupitre de commande (20) à l'unité de contrôle et de surveillance (26) en utilisant des premiers moyens de transmission (24), et
    - une unité d'affichage (30) au moyen de laquelle la fonction en cours d'exécution par l'engin de chantier (10) peut être visualisée en fonctionnement normal, les premiers signaux (S1) et/ou les signaux d'actionnement (SB) étant transmis à l'unité d'affichage (30) en utilisant des seconds moyens de transmission (28),
    caractérisé en ce que
    le dispositif est conçu de telle sorte que, en cas de perturbation des premiers signaux (S1) ou des premiers moyens de transmission (24), des seconds signaux (S2) en relation avec l'actionnement des actionneurs (34) sont générés en utilisant l'unité d'affichage (30), lesdits seconds signaux étant transmis à l'unité de contrôle et de surveillance (26) au moyen des seconds moyens de transmission (28) et étant convertis en signaux d'actionnement (SB) au moyen de l'unité de contrôle et de surveillance (26), dans lequel la fonction en cours d'exécution par l'engin de chantier (10) n'est visualisée qu'en fonctionnement normal, et les seconds signaux (S2) en relation avec l'actionnement des actionneurs (34) ne sont générés et transmis à l'unité de contrôle et de surveillance (26) qu'en cas de perturbation des premiers moyens de transmission (24).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    l'unité d'affichage (30) comprend des segments de commande (44) correspondant à l'un ou à plusieurs des éléments de commande (22) du pupitre de commande (20).
  3. Dispositif selon la revendication 2,
    caractérisé en ce que
    les segments de commande (44) comprennent des interrupteurs à touche, des leviers et/ou des commutateurs rotatifs.
  4. Dispositif selon la revendication 3,
    caractérisé en ce que
    l'unité d'affichage (30) affiche un ou plusieurs symboles graphiques (46) qui correspondent à un ou plusieurs éléments de commande (22), l'unité d'affichage (30) attribuant les interrupteurs à touche, les leviers et/ou les commutateurs rotatifs aux symboles graphiques (46).
  5. Dispositif selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'unité d'affichage (30) comprend une surface fonctionnant par effleurement.
  6. Dispositif selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    les seconds moyens de transmission (28) sont configurés en bus CAN.
  7. Engin de chantier (10) comprenant un dispositif selon l'une quelconque des revendications précédentes.
  8. Procédé de commande d'un engin de chantier (10) selon la revendication 7, comprenant les étapes suivantes :
    - génération de premiers signaux (S1) relatifs à l'actionnement des actionneurs (34) au moyen d'un pupitre de commande (20), le pupitre de commande (20) comprenant plusieurs éléments de commande (22) pour la commande d'actionneurs (34) de l'engin de chantier (10) pour réaliser les fonctions désirées de l'engin de chantier (10),
    - transmission des premiers signaux (S1) du pupitre de commande (20) à l'unité de contrôle et de surveillance (26) en utilisant des premiers moyens de transmission (24),
    - conversion des premiers signaux (S1) en signaux d'actionnement (SB) au moyen d'une unité de contrôle et de surveillance (26), les actionneurs (34) étant actionnés par les signaux d'actionnement (SB),
    - transmission des premiers signaux (S1) et/ou des signaux d'actionnement (SB) à l'unité d'affichage (30) en utilisant des seconds moyens de transmission (28),
    - visualisation de la fonction en cours d'exécution par l'engin de chantier (10) en fonctionnement normal par une unité d'affichage (30), ou
    - génération de seconds signaux (S2) en relation avec l'actionnement des actionneurs (34) en cas de perturbation des premiers moyens de transmission (24) en utilisant l'unité d'affichage (30),
    - transmission des seconds signaux (S2) à l'unité de contrôle et de surveillance (26) en utilisant les seconds moyens de transmission, et conversion en signaux d'actionnement (SB) au moyen de l'unité de contrôle et de surveillance (26) en cas de perturbation des premiers signaux (S1) ou des premiers moyens de transmission (24), l'unité de contrôle et de surveillance (26) provoquant la génération par l'unité d'affichage (30) des seconds signaux (S2) en cas de perturbation des premiers signaux (S1), dans lequel la visualisation des fonctions en cours d'exécution par l'engin de chantier (10) n'est réalisée qu'en fonctionnement normal, et les étapes de génération des seconds signaux (S2) en relation avec l'actionnement des actionneurs et de transmission des seconds signaux (S2) à l'unité de contrôle et de surveillance (26) ne sont réalisées qu'en cas de perturbation des premiers moyens de transmission (24).
EP13717715.0A 2012-05-04 2013-04-12 Unité de controle d'une machine de construction Active EP2844804B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012009000A DE102012009000A1 (de) 2012-05-04 2012-05-04 Bedienelement einer Baumaschine
PCT/EP2013/001082 WO2013164064A1 (fr) 2012-05-04 2013-04-12 Élément de commande d'un engin de chantier

Publications (3)

Publication Number Publication Date
EP2844804A1 EP2844804A1 (fr) 2015-03-11
EP2844804B1 EP2844804B1 (fr) 2016-12-21
EP2844804B2 true EP2844804B2 (fr) 2020-01-08

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Application Number Title Priority Date Filing Date
EP13717715.0A Active EP2844804B2 (fr) 2012-05-04 2013-04-12 Unité de controle d'une machine de construction

Country Status (4)

Country Link
EP (1) EP2844804B2 (fr)
CN (1) CN104350214B (fr)
DE (1) DE102012009000A1 (fr)
WO (1) WO2013164064A1 (fr)

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GB2573509B (en) * 2018-04-26 2020-09-02 Caterpillar Inc Method and system for providing display redundancy on a machine
DE102019107800A1 (de) * 2019-03-26 2020-10-01 Wirtgen Gmbh Baumaschine mit einer Vorrichtung zur Steuerung der Baumaschine und Verfahren zur Steuerung einer Baumaschine

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Publication number Priority date Publication date Assignee Title
DE9301031U1 (de) † 1993-01-26 1994-05-26 Beilhack Maschf Martin Bedienpult für Straßendienstfahrzeuge, insbesondere für den Winterdienst geeignete Fahrzeuge
EP0790353A1 (fr) † 1996-02-17 1997-08-20 ABG Allgemeine Baumaschinen-Gesellschaft mbH Finisseuse
EP1627774A1 (fr) † 2004-07-27 2006-02-22 Joseph Voegele AG Engin de chantier avec pupitre de commande
DE202006008543U1 (de) † 2006-05-26 2006-09-14 Weber Maschinentechnik Gmbh Vorrichtung zum Überwachen, Kontrollieren und/oder Steuern von Baumaschinen
EP1935752A1 (fr) † 2006-12-22 2008-06-25 J.C. Bamford Excavators Limited Machine de travail

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EP2844804A1 (fr) 2015-03-11
WO2013164064A1 (fr) 2013-11-07
CN104350214A (zh) 2015-02-11
EP2844804B1 (fr) 2016-12-21
CN104350214B (zh) 2017-07-21
DE102012009000A1 (de) 2013-11-07

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