Construction machine for creating or modifying a road

Description

[0001] The present invention relates to a construction machine for constructing and / or working on a road, such as a road paver according to claim 1, and to a method for displaying operating parameters of a construction machine for constructing and / or working on a road according to claim 7. State of the art

[0002] Construction machinery for building or maintaining roads is well known in the art. These include, for example, road pavers, which can spread and press a material such as asphalt onto the road. Compactors, which typically follow a road paver in the direction of travel, are also considered such construction machinery. Feeder vehicles, which can feed a road paver with an asphalt mixture or other material for road construction, also fall under this category. Combinations of these vehicles can also be considered construction machinery.

[0003] When operating these construction machines, a large amount of information is generated with regard to the environment but also with regard to the operation of the construction machine.

[0004] Using the example of a road paver, information is gathered regarding its position relative to the road's edge. Furthermore, information concerning ambient temperature and humidity can be relevant. The temperature of the road surface in front of and behind the paver is of great importance. This is also related to the temperature in the paver's material hopper, or rather, the temperature of the paving material (asphalt mix or similar) within the hopper.

[0005] Operating parameters that affect the condition of the construction machine can also be relevant. For example, knowing the angle of attack or the height of the screed, and thus the setting of the leveling cylinders, is important for the operation of a road paver. The transport speed of the scraper belts that feed material from the material hopper to the auger can also be relevant. Other parameters may also be of interest to the road paver operator.

[0006] Much of this data is already generated during operation of the construction machine and is often stored for analysis purposes and evaluated at a later date if necessary. It is also known to provide monitoring devices for the screed heating system, for example, that can indicate the current operating status (heating switched on or off).

[0007] Furthermore, US patent 2015 / 0063907 A1 discloses a method for operating a machine with at least one working tool, wherein a series of feedback devices are provided that can capture and track information about the setting of the working tool.

[0008] From DE 94 02 324 U1 a road paver is known, with a device for monitoring and displaying parameters of the supply with installation material.

[0009] The multitude of incoming data from the environment and from various work equipment on the construction machine is usually inaccessible to an operator and, even if it is, difficult to process. In particular, there is a risk that the multitude of possible incoming information or data could distract a construction machine operator from the actual operation of the construction machine, and especially from driving it, which can increase the risk of an accident. Task

[0010] Based on the known state of the art, the problem to be solved is therefore to specify a construction machine and a method for displaying operating parameters of the construction machine, which enables the driver or another operator to obtain information about various operating parameters of the construction machine in the simplest and most understandable way possible and thus to ensure correct execution of the road work while minimizing the risk of accidents. Solution

[0011] This object is achieved according to the invention by the construction machine for constructing or working on a road according to claim 1 or the method for displaying operating parameters of a construction machine according to claim 7. Advantageous developments of the invention are covered in the subclaims.

[0012] The construction machine according to the invention for constructing and / or working a road, such as a road paver, comprises at least one working device, a display device and a plurality of sensors, wherein each sensor is designed to measure a value of an operating parameter of the construction machine, wherein the sensors can output data corresponding to the measured values ​​to the display device and the display device is designed to output a representation of at least a part of the construction machine together with the measured values ​​of the operating parameters.

[0013] The working tool of a construction machine is defined as any device used for the construction and / or maintenance of a road. This includes, for example, the screed of a road paver and the material hopper in which the material for road construction is stored. Other devices, such as the drive of the construction machine, also fall under this category.

[0014] Most sensors comprise at least two sensors, which then preferably measure two different operating parameters. An operating parameter is understood to be a value or piece of information that is characteristic of the operation of the construction machine or attachment, or of the movement of the construction machine, or that characterizes properties of the environment. This includes, for example, the speed and position of the machine, but also the application rate of paving material for the road, or the quantity or temperature of the paving material held in the hopper. Other operating parameters, such as the temperature (of the heating element) of the screed or the inclination angle of the screed, the transport speed of the conveyor belts, or similar values, also fall into this category.Analogously, other operating parameters can also be provided, for example of a compactor that runs behind the road paver or of a feeder vehicle (also called feeder for short) for feeding the material hopper of a road paver.

[0015] Furthermore, the construction machine does not have to be a single vehicle such as a road paver or a feeder vehicle, but can also be a vehicle combination, for example comprising a road paver, a compactor driving behind it and a feeder driving in front.

[0016] The display device is advantageously arranged on the construction machine, but does not need to be permanently attached to it.

[0017] The display of a part of the construction machine together with the measured values ​​of the operating parameters on the display device is to be understood as meaning that at least two measured operating parameters or their measured values ​​are displayed together with a part of the construction machine. For example, this means that the screed of a road paver and the contact pressure of the screed, or its angle of inclination, or its height are displayed together with the screed on the display device.

[0018] This allows the operator to easily and centrally access a wide range of information relevant to the operation of the construction machine, and thus to its use by the driver or other operators. This reduces the number of instruments the operator needs to monitor, thereby increasing road safety while simplifying the operation of the construction machine.

[0019] In one embodiment, the construction machine is equipped with a camera for capturing a real-time image of at least a portion of the machine and transmitting this image to the display unit. In this embodiment, the image of at least that portion of the machine, continuously captured by the camera, is displayed on the display unit. According to the invention, this occurs in conjunction with the operating parameters. The operator can thus be informed about the machine's condition not only based on the measured values ​​of the operating parameters, but also simultaneously receive information that is readily apparent to the operator from the real-time display, but is difficult to detect using sensors. This further simplifies the operation of the construction machine.

[0020] Furthermore, it can be provided that the operating parameters specify at least one of the movement of the construction machine, the function of the work tool, the operating mode of the work tool and / or the position of the construction machine in the environment. The function of the work tool is understood to mean values ​​that characterize the work tool in its operation, such as the current temperature of the heater or the paving screed or the speed at which a conveyor belt feeds paving material to the material hopper or the speed at which the scraper belts remove material from the material hopper. The operating mode of the work tool is preferably a property that is also assigned to the work tool, but is usually static or quasi-static throughout the operation of the work tool. For example, the working width of the paving screed, which is partially adjustable, represents such an operating parameter characterizing the operating mode of the work tool.The operating mode can also indicate whether the work device is switched on at all. For example, an operating parameter assigned to the heating element of the screed can take the value "on" or "off" to indicate whether the heating element is switched on or off.

[0021] It can also be provided that the measured values ​​of the operating parameters can be superimposed on the display of at least one part of the construction machine. This means that when at least one part of the construction machine is displayed, the corresponding operating parameters are overlaid on this display, resulting in a combined representation of the display of at least one part of the construction machine and the operating parameters. This form of display can also be described as "mixed reality" or "augmented reality." This allows the operator to easily assign the displayed measured values ​​to, for example, the working tools of the construction machine.

[0022] It can also be provided that the display device is configured to output at least one target value for at least one of the operating parameters in addition to the measured values ​​of the operating parameters. This can particularly affect fluctuating operating parameters, such as the temperature of the paving material stored in the material hopper. In this case, a target temperature can be output by the display device together with the actual temperature (the currently measured value), allowing the operator or driver of the construction machine to make adjustments if necessary. This further simplifies operation of the construction machine.

[0023] Furthermore, it can be provided that the construction machine is a road paver, and the working device is at least one of the drive of the road paver, the material hopper for receiving material used for road construction, scraper belts for transporting the material from the material hopper to a distribution auger, a paving screed, a heater for the paving screed, or a leveling cylinder for adjusting the attachment point of the paving screed, wherein at least one sensor is provided for measuring an operating parameter of the working device. The inventive representation of the operating parameter together with a part of the construction machine can achieve a simplified representation of the operating parameters of the working devices commonly used that is easily understandable for the operator.

[0024] According to the invention, the display device comprises virtual reality glasses. Virtual reality glasses offer the advantage that the operator can view the measured values ​​while remaining focused on, for example, driving the construction machine, and do not have to look from the road at a separate display. This facilitates the operation of the construction machine and increases operational safety. The virtual reality glasses can be implemented as head-mounted displays or smart glasses, which can be selected according to suit the specific requirements.

[0025] According to the invention, the virtual reality glasses are designed to display at least one operating parameter of the work equipment when the work equipment is within the field of vision of an operator of the construction machine. For example, if a worker walking alongside a paver is looking at the paver's screed, the operator can be shown information about the heating or the setting of the leveling cylinders, which also determine the screed's attachment point. If, on the other hand, this operator is looking at the material hopper, information about the temperature of the paving material and the conveyor belt speed can be displayed. This embodiment provides the operator with the information or operating parameters that pertain to the work equipment he is currently viewing, so that information that is likely not currently relevant to the operator can be hidden.

[0026] The method according to the invention for displaying operating parameters of a construction machine for constructing or working on a road, such as a road paver, comprises measuring a value of an operating parameter by a plurality of sensors and outputting this value to a display device. The display device outputs a representation of at least part of the construction machine together with the measured values ​​of the operating parameters. The operation of the construction machine and its monitoring can thus be carried out in a compact manner, while additionally increasing road safety or safety when driving the construction machine and allowing construction work to be carried out reliably.

[0027] The measured operating parameters can be superimposed on the display. This allows the operator to easily associate a displayed implement, for example, with the measured values ​​of the operating parameters.

[0028] According to the invention, the display device comprises virtual reality glasses, and the display is dependent on the operator's field of vision. The operating parameters of a work tool are displayed and associated with the work tool when the work tool is within the operator's field of vision. As already explained, the operator can, for example, see the operating parameters relating to the screed when looking at this screed. However, in order to additionally display the other information or measured operating parameters, an area in the display device, in the form of the virtual reality glasses, can include a list, table, or similar representation in which the other operating parameters, which do not relate to the operating parameters of the work tool currently being viewed by the operator, are displayed.This allows the operator to be shown the information they are likely to need without losing any information and still being able to concentrate on operating or driving the construction machine.

[0029] In an alternative embodiment, a real-time representation of at least a portion of the construction machine is recorded by a camera and transmitted to the display device, wherein the display device presents an at least partially animated representation of at least the portion of the construction machine. Mapping the state of the portion of the construction machine in real time on the display device allows the operator to perceive, in addition to the operating parameters measured by the sensors, other states of the construction machine that are not measured by sensors. This enables comprehensive yet simple monitoring of the construction machine.

[0030] In contrast, an animated representation of at least part of the construction machine on the display device can provide improved interaction options, for example by enlarging sections of the representation or interacting with them to display further control options.

[0031] In addition to the measured operating parameters, target values ​​for the operating parameters can be displayed. This provides the operator with a simple overview of the actual status and possible deviations from the target status of the construction machine.

[0032] Furthermore, the display device can include a control element with which the operator interacts with the display and / or the measured operating parameters to control the construction machine. The control element can be, for example, the touchscreen of a touchscreen display. However, a keyboard and mouse, a joystick, or other elements are also possible. These control elements provide an interaction option that allows the operator to centrally influence the operating parameters of the construction machine.

[0033] Furthermore, the construction machine can be a road paver, and the working unit can be at least one component of the road paver's drive, the material hopper for receiving material used in road construction, scraper belts for transporting the material from the hopper to a distribution auger, a screed, a heater for the screed, or a leveling cylinder for adjusting the screed's attachment point, wherein at least one sensor measures an operating parameter of the working unit. The method according to the invention is thus advantageously implemented for the conventional working units of road pavers. Short description of the characters

[0034] Figure 1 shows a construction machine according to one embodiment. Figure 2 shows a construction machine comprising several vehicles according to one embodiment. Figures 3a to c show display devices for displaying the operating parameters, wherein Figure 3crepresents an embodiment of the invention. Detailed description

[0035] Figure 1 shows a construction machine 100 on a road 140 to be constructed or worked on, according to one embodiment of the invention. In the embodiment shown here, the construction machine comprises only one vehicle, which in the form shown is a road paver. Road pavers are used to apply the surface forming the road to the ground. For example, an asphalt mixture or concrete mixture or other suitable materials can be used up by the road paver.

[0036] The road paver, as an embodiment of the construction machine 100, can be of conventional design and be a wheeled or tracked paver with a corresponding drive / engine 156 (diesel engine, electric motor, or similar). These vehicles typically include a driver's cab 103, a material hopper 101, and a screed 102. The material used for paving or preparing the road is stored in the material hopper and fed to the screed 102 via scraper conveyors 151 (shown here only as dashed lines) or other suitable devices at the bottom of the hopper. The material is usually distributed by a spreading auger 155 over at least a certain width of the screed 102 to ensure the most uniform possible application of the material to the road.The screed, as is known, includes a heating device or heater 152 for heating the material and is held in a specific position relative to the road surface by leveling cylinders 154 and corresponding connections 153 to the leveling cylinders 154. The leveling cylinder 154, or rather its setting, defines the attachment point 157 of the screed. The screed 102 typically includes compaction units with which the laid material can be compacted on the road surface to be constructed. A screed relief system may also be provided.

[0037] The material hopper 101 and the paving screed are examples of a device generally referred to as "working equipment" 101, 102 with which the construction machine assists in the construction or processing of a road.

[0038] In addition to the road paver 100, other vehicles used in road construction can also be considered as construction machinery.

[0039] During the operation of such a construction machine, a variety of information is typically generated for the operator or any person walking alongside the machine. This includes information relating to the machine itself, such as its speed, the temperature of the screed (heater 152), and its orientation, as well as operating parameters concerning the material hopper and the material it contains. Additionally, information regarding the road surface in front of the machine or that laid by the machine may be of interest to the operator. This includes, for example, the temperature of the subgrade in front of the paver and the temperature of the laid road surface after the paver.

[0040] In order to measure this information or operating parameters in general, the invention provides that the construction machine comprises a plurality, at least two, sensors for measuring operating parameters. For example, a sensor 111 can be provided that is arranged in or on the material hopper 101 and measures at least one temperature relevant to the material contained in the material hopper. For example, the sensor 111 can measure the temperature of the asphalt mixture near the surface or its core temperature, or even the temperature of the material in the area of ​​the aforementioned scraper belts 151, immediately before this material is fed from the scraper belts to the paving screed.

[0041] Accordingly, one or more sensors can be provided to measure the operating parameters of the paving screed. For example, one or more sensors 121 can be provided to measure or record the width of the paving screed if it is designed as a variable-width screed. The angle of inclination of the paving screed 102 with respect to a horizontal plane can also be measured using sensors. Additionally, the contact pressure of the compaction units can be determined by these sensors or by another sensor 122. Furthermore, sensors 123 can be provided to measure, for example, operating parameters of the distribution screw (rotation speed or similar) or the temperature of the heater 152 associated with the paving screed or of a component of the paving screed 102 itself.Sensors can be provided additionally or alternatively, for example, to measure the distance between the ends of the paving screed and the respective road boundary. Other sensors, such as a sensor for measuring the current position of the road paver or the construction machine 100 in general (e.g., GPS sensors), can also be used.

[0042] Furthermore, sensors are provided that measure information or operating parameters regarding the interaction with other machines. For example, a radar sensor can be provided that measures the distance to a feeder, as it is still in Figure 2 described.

[0043] Existing sensors can also be used here. For example, an existing infrared camera can be used to measure the temperature of the applied road surface.

[0044] In addition to these sensors, which measure the operating parameters of the construction machine, one or more cameras 131 (in Fig. 1 (shown as black squares) that capture a representation, preferably a real-time representation in the form of a video or live stream, of the construction machine and / or its surroundings. However, these cameras are not mandatory.

[0045] In principle, all sensors already provided in construction machines 100 can be used. In addition, further sensors can be provided in the construction machine 100 according to the invention to detect operating parameters that may also be considered relevant, in order to enable the measurement of the corresponding operating parameters.

[0046] According to the invention, data corresponding to the measured values ​​of the operating parameters are supplied to a display device, which will be described below, on which the operating parameters are displayed together with a representation of at least one part of the construction machine.

[0047] Figure 2 Figure 2 shows another embodiment of a construction machine 200. In this embodiment, the construction machine is formed by a plurality of vehicles. Thus, in addition to the road paver 100, as already shown in Figure 200, there is a further embodiment of a construction machine 200. Figure 1As described above, a feeder vehicle 203 is provided, which can feed an asphalt mixture or other material to be applied to the road via an endless conveyor belt 230 to the material hopper of the road paver 100. The feeder vehicle 203 can also comprise one (or more) corresponding sensors for measuring an operating parameter, for example, the amount of road material fed per unit of time (measured, for example, in tons per hour). The data obtained by this sensor, which corresponds to the measured value of the operating parameter, can also subsequently be transmitted to the display device.

[0048] One or more compactors 201 and 202 can follow behind the road paver 100 in the direction of travel of the construction machine 200, compacting the road surface applied by the road paver 100. The compactors 201 and 202 can be designed, for example, as rollers. Here, too, one or more sensors can be provided that measure relevant operating parameters, such as the distance to the road paver, the contact pressure, the speed, or the subsurface temperature. The data corresponding to the measured values ​​of the operating parameters measured by these sensors can also be fed to the display device.

[0049] The Figure 3ashows a first embodiment of a display device 300 not according to the invention. In the embodiment shown here, the display device is initially generally designed as a display or, fundamentally, a device for displaying information. The display device 300 can comprise a touchscreen 301 or a similar image-output surface. One or more operating elements 395 in the form of a keyboard and mouse can additionally be assigned to the display device 300. Alternatively or additionally, when using a touch display, the touch display itself can also serve as a touch-sensitive surface for interaction, in which case the displayed operating element 395 can then be designed, for example, as an interactive menu. However, this is not absolutely necessary. The display device 300 further preferably has means for storing and processing data (processor, memory, or the like) or such means are assigned to it.Means for exchanging data with the sensors can also be provided. For attaching the display device, for example, in the driver's cab or on the construction machine, a bracket 396 can be provided, which, for example, encompasses the display device in the form of a clamp. This bracket can be permanently mounted on or in the construction machine and enable a detachable connection of the display device 300 to the construction machine.

[0050] On the display device 300, a representation of at least a part of the construction machine (in Figure 3a the road paver 321) together with the measured values ​​of the operating parameters.

[0051] The representation of the part of the construction machine 321 can either be a purely animated (fictitious) representation (which is therefore not based on real ones, for example with the help of the cameras 131 according to Figure 1(based on recorded images). Alternatively, a real-time representation of the construction machine 100 recorded by cameras 131 can also be displayed.

[0052] The operating parameters are displayed in such a way that an operator or the driver of the construction machine 100 can assign the operating parameters to the corresponding working unit (for example, screed, heater, conveyor belt in the case of a feeder vehicle, or similar). For example, operating parameter 312, which relates to the entire width of the screed, is shown together with the screed 310. In the embodiment shown here, this can be achieved by superimposing the value of the measured operating parameter b = 4.5 m in a framed box on the representation of the construction machine and, for example, by means of an arrow, line, or other means, connecting it to the relevant working unit. The same applies to operating parameter 314, which represents the angle of attack of the screed by the leveling cylinders with α = 2°.The temperature of the paving material in the material hopper 324 can also be indicated via a corresponding representation 315 of the temperature T=175°C and can be associated with the material hopper in such a way that the operator or driver of the construction machine can see at a glance that this value indicates the temperature of the paving material.

[0053] Additionally, other operating parameters that do not necessarily relate to the construction machine itself can be displayed. For example, the temperature of the road surface in the direction of travel in front of the road paver 321 can be displayed using operating parameter 316 with T=3.4°C. The temperature of the applied road surface immediately behind the road paver can also be displayed using display 313. Here, the value T=120°C is shown as an example. Furthermore, one or more operating parameters that characterize the movement of the construction machine can be specified. Figure 3aIn the embodiment shown, this was carried out using the operating parameter 311 with v=6m / min for the case of speed.

[0054] While the described operating parameters are always shown next to the corresponding work equipment or, for example, next to the road surface, it is clear that the operating parameters can also be displayed in the corresponding work equipment or directly superimposed on it. For example, operating parameters 312 and 314 could also be displayed in the area of ​​the paving screed 310 shown.

[0055] This can be chosen based on practical reasons, so that a representation is created that allows the operator to assign the measured value of the operating parameter to the entity described by it (e.g., work equipment, road, or similar), but also allows the operator to easily read the measured value of the operating parameter. In principle, the operating parameters are initially superimposed on a part of the construction machine in the form of mixed reality or augmented reality.

[0056] In the Figure 3aIn the illustrated embodiment, only the values ​​of the operating parameters measured by the sensors are shown. However, it can also be advantageous to display target values ​​for at least one or some of the operating parameters in addition to these values, which are commonly referred to as "actual values." This can be done, for example, by displaying not only the actual value in the illustrated boxed boxes, but also the target value and, if necessary, even the difference between the two, so that the operator can adjust the operation or operating mode of the construction machine or work tool accordingly. For example, when constructing a road, it may be specified that the material being laid has a temperature of 135°C. This is then the "target value" for the relevant operating parameter. This would be displayed together with the currently measured temperature in field 313.The difference between target value and actual value or actual value and target value can also be displayed in field 313.

[0057] While the previously described embodiments only displayed numerical values, such as those relevant to the movement of the construction machine or operating parameters of the attachment or the machine itself, other embodiments are also conceivable. For example, non-numerically specified operating parameters or parameters not typically expressed numerically can also be displayed. This applies, for instance, to the heating of the screed or the conveyor belts. Here, it can be indicated, either as an alternative or in addition to, for example, the conveyor belt's transport speed, whether it is switched on or off. The same applies to the heating element or the auger associated with the screed. Furthermore, error messages or warnings can also be displayed on the display device, either overlaid on the entire display or at least a portion of it.

[0058] While in principle at least a part of the construction machine is shown on the display device 300, as shown in Figure 3a was carried out, the entire construction machine can also be shown with reference to the road.

[0059] Figure 3b shows another embodiment of the display on the display device. In the embodiment shown here, only a part of the construction machine (here again a road paver) is shown. For example, the material hopper has been largely omitted. Figure 3b However, the embodiment shown shows the screed and more detailed operating parameters relating to the screed.

[0060] In addition to the measures already in Figure 3aOperating parameters 314 and 313 are shown, along with further operating parameters. For example, operating parameter 331 specifies the temperature of the paving material (T = 130°C) directly in the area of ​​the screed. Operating parameter 332 (R = 20.5 t / h) indicates the throughput or application rate achieved via the distribution auger. Operating parameter 334 describes the overall width and / or the width of extendable screed sections. With typical road pavers, a paving width of up to 16 meters can be achieved. In this case, it is particularly advantageous if the ends of the screed have a certain amount of "sag" relative to the center of the screed to compensate for the buoyancy of these edges on the partially liquid or at least viscous paving material. This sag can be several centimeters and can also be designated as operating parameter 333 (D = 1 cm).Furthermore, the operating parameter 335 can be used to represent the angle of inclination of the road surface or the construction machine 321 to the horizontal (here β=0.4°), whereas the angle of inclination already defined in the . Figure 3a The known operating parameter 314 α=2° allows the setting of the leveling cylinder to be specified.

[0061] The specification of the operating parameters according to the Figure 3b is only an example and should not be understood as exhaustive or mandatory. Thus, a different operating parameter can be specified instead of operating parameter 332. This naturally also applies to the other operating parameters shown.

[0062] From the more general presentation in Figure 3a An operator of the display device can Figure 3b for example, through interaction with the displayed representation of the Figure 3a The information already provided with reference to Figure 3aThe control elements described can be used for this purpose. For example, if the display device 300 is equipped with a touch-sensitive touch display 301 (see Figure 3a ), the operator can switch from the display in the area of ​​the screed 310 to the display in Figure 3a for display in Figure 3b which displays an enlarged and detailed view of the work tool (in this example, the screed). This is advantageous if the display in the Figure 3a is an animated representation of the construction machine. In case the representation in Figure 3a a real-time representation of the construction machine using the cameras 131 (see Figure 1 ), can still be displayed according to the display device via appropriate interaction with the display device. Figure 3bThis can be accessed, for example, by selecting menu items or by entering the desired information using the input device, in accordance with the... Figure 3b is called.

[0063] The ability to switch between a less detailed overall view of the construction machine and a display of only a part of the machine (possibly with more operating parameters) allows the operator to obtain the relevant operating parameters at a glance in any situation, with minimal interaction with the display. This simplifies operation and, particularly when the driver is using the display, minimizes distractions from their primary task of controlling the machine. This helps to reduce the risk of accidents.

[0064] It is understood that the representations of the Figures 3a and 3b are not limited to a road paver, but other construction machines used in the construction or maintenance of roads can also be represented. For example, the feeder vehicle can be Figure 2 can also be shown on a corresponding display device either in addition to the road paver or as an alternative to it.

[0065] The display device 300 in the form of a display, as shown in the Figures 3a and 3b can, for example, be permanently mounted in the driver's cab of the construction machine 100. Here, it can display the operating parameters not only of the vehicle on which it is mounted, but it can also display the operating parameters of other vehicles, such as the feeder or the bulldozers, according to Figure 2 This allows the driver of the road paver 100 to Figure 2All necessary information, not only regarding the road paver itself, but also regarding other vehicles working in conjunction with the road paver, will be provided in order to optimize the operation of the road paver.

[0066] Alternatively or additionally, a display unit 300 can also be provided outside of a construction machine in the form of a portable display, such as a tablet computer. It can also be permanently mounted on the outer casing of the construction machine, so that an operator walking alongside the machine is able to monitor the operating parameters.

[0067] It is also possible that the display device, while designed as a mobile display unit in the form of a tablet computer or similar device, can be attached to corresponding mounts or brackets on a construction machine. In this embodiment, the display on the device, in particular the representation of the construction machine or a part thereof, as well as the displayed operating parameters, can change depending on whether the construction machine is mounted in a corresponding mount or not. It can also be provided that the display changes depending on the type of mount or bracket in which the display device is installed.

[0068] For example, a mounting point can be provided in the area of ​​the drive system of construction machine 100. If the display unit is installed in this mounting point, the display can be modified to show the drive system and operating parameters relating to the drive / motor and, for example, the sprockets in the case of a tracked paver. If the display unit is installed in a mounting point in the area of ​​the screed, a display of the screed, as shown, for example, in Figure 3b described, which may also affect the associated operating parameters.

[0069] In this embodiment, the operator's interaction with the display device can be further simplified, as the information relevant to the corresponding work tool or part of the construction machine is always displayed without the need for additional interaction. If the display device is not arranged in any mount, a general display can be generated, for example, according to Figure 3a This will be done so that the operator is given an overview of some of the most relevant operating parameters.

[0070] To enable the display unit to recognize which mounting bracket it is installed in and adjust the display accordingly, each bracket can be equipped with an electronic or mechanical identifier that can be recognized by the display unit and / or its associated processor unit. The processor unit and / or the display unit are then configured to adjust the display according to the recognized bracket and thus the position of the display unit. This can be achieved, for example, using RFID identification.

[0071] Figure 3cshows an embodiment of the display device 300 according to the invention in the form of data glasses, also known as virtual reality glasses 350. These can either be designed as a head-mounted display comprising an opaque screen that can be positioned in front of the eyes. Alternatively, the virtual reality glasses 350 can also be designed in the form of conventional "glasses" with a built-in display in the form of smart glasses or data glasses. In the first embodiment, the virtual reality glasses are comparable in terms of their properties to the display device according to the Figures 3a and 3b, whereas in the second embodiment in the form of data glasses an artificial representation, for example with the help of an animated representation or images of the construction machine taken by cameras, is not necessary and the "representation" of at least part of the construction machine is achieved by the operator looking at the construction machine through the data glasses, i.e. the representation corresponds to the current field of vision of the operator and wearer of the data glasses.

[0072] The Figure 3c is therefore essentially concerned with the embodiment of the virtual reality glasses as data glasses and not with the embodiment as a head-mounted display, since in this embodiment the essential features are already described with reference to the Figures 3a and 3b were described.

[0073] In the embodiment in Figure 3cAn operator looks through the glasses 350 at a part of the construction machine 360, namely at least a part of the material hopper 370, and also looks at the road 380 located in front of the construction machine in the direction of travel. In the illustrated embodiment, the operator is shown an area 371 in a glass or on the left side of the data glasses 350, which highlights the material hopper 370 and in which the operating parameters 372 (temperature of the paving material) and 373 (throughput of the scraper belts in tons per hour, R=10 t / h) assigned to the material hopper are displayed. This can be achieved by known image recognition measures, by which the data glasses or a data processing device or processor assigned to them recognizes the material hopper 370 and assigns the values ​​of the operating parameters measured by the sensors to this material hopper.In addition, the operator sees the street 380 through the data glasses 350, so that the temperature 361 of the street 380 (here with T=6°C) can also be displayed in the left area of ​​the data glasses.

[0074] It goes without saying that other operating parameters can also be displayed here, which not only relate to the material hopper or the road, but also, for example, characterize the paving screed or another work piece of equipment. All operating parameters discussed so far are possible. Furthermore, the corresponding operating parameters do not have to be displayed exclusively in the left pane or on the left side of the data glasses 350, but can also be displayed in any of the panes or on the right side of the data glasses 350.

[0075] The embodiment shown here displays certain operating parameters depending on the field of view or the viewing direction of the wearer of the data glasses 350. This can also be provided for virtual reality glasses, implemented in the form of a head-mounted display. However, this also means that the operator typically does not see all components or parts of the construction machine and may therefore be missing information. Therefore, it can be provided that, in a list area 390 of the data glasses (or more generally, virtual reality glasses, since this can also apply to head-mounted displays), additional operating parameters for work equipment or other devices / components of the construction machine 100 that are not currently in the operator's field of view are displayed.If, for example, the operator turns his head so that he has the paving screed 102 in his field of view instead of the material hopper 101, the operating parameters of the screed can be displayed, for example, in the left lens of the data glasses 350, as explained here as an example for the operating parameters of the material hopper. The operating parameters of the material hopper can then be displayed in the list area 390. In the embodiment shown here, in which the wearer of the data glasses or the operator sees the material hopper, however, further operating parameters, such as the speed of the construction machine, the paving width of the screed, or the temperature of the applied road surface, can be displayed in the list area 390.

[0076] It is understood that with the virtual reality glasses 350 (regardless of whether they are designed as a head-mounted display or as data glasses), all of the operating parameters already explained can be displayed. In particular, when using a head-mounted display as virtual reality glasses, a display analogous to the data glasses 350 can also be created by showing a real-time representation of the construction machine on the display, which depends on the field of view or viewing direction of the operator and, for example, by the cameras 131, as described with reference to Figure 1 This allows the operator to observe the current situation in and around the construction machine despite the inherently opaque screen and can simultaneously be provided with the necessary operating parameters for controlling the construction machine.

[0077] Basically, the operating parameters are displayed using virtual reality glasses in the form of augmented reality, so that the operating parameters are superimposed on the actual representation of the environment, preferably without significantly obstructing the view of the construction machine.

Claims

1. A construction machine (100) for constructing or maintaining a road, such as a paver, the construction machine comprising at least one working device (101, 102), a display device (300) and a plurality of sensors (111, 121, 122, 123), each sensor being configured to measure a value of an operating parameter of the construction machine (100), wherein the sensors enable output of data corresponding to the measured values to the display device (300) and the display device is configured to output a representation of at least a part of the construction machine (100) together with the measured values of the operating parameters, wherein at least one sensor is provided for measuring an operating parameter relating to the interaction with other machines, thereby enabling data corresponding to the operating parameter relating to the interaction with the other machines to be supplied to the display device, characterized in that the display device (300) comprises a virtual reality headset (350) configured such that the representation is dependent on the operator's field of vision, the operating parameters of a working device being displayed when the working device is in the operator's field of view, and the operating parameters of the working device are preferably displayed in a list area (390) when the working device is not in the operator's field of view.

2. The construction machine (100) according to claim 1, further comprising a camera (131) for capturing a real-time representation of at least a part of the construction machine (100) and for transmitting the captured real-time representation to the display device (300).

3. The construction machine (100) according to claims 1 or 2, wherein the operating parameters indicate at least one of the movement of the construction machine (100), the function of the working device, the operating mode of the working device and / or the position of the construction machine (100) in the environment.

4. The construction machine (100) according to any one of claims 1 to 3, wherein the display device (300) enables displaying of the measured values of the operating parameters of the representation of at least the part of the construction machine (100) in a superimposed manner.

5. The construction machine (100) according to any one of claims 1 to 4, wherein the display device (300) is configured to output, in addition to the measured values of the operating parameters, at least one setpoint value for at least one of the operating parameters.

6. The construction machine (100) according to any one of claims 1 to 5, wherein the construction machine (100) is a road paver and the working device is at least one of the drive (156) of the road paver, the material hopper (101) for receiving material used for road construction, scraper belts (151) for transporting the material from the material hopper to a spreading screw (155), a screed (102), a heating system (152) for the screed (102) or a levelling cylinder (154) for adjusting a towing point (157) of the screed, wherein at least one sensor (111, 121, 122, 123) is provided for measuring an operating parameter of the working device.

7. A method for displaying operating parameters of a construction machine (100) for constructing or maintaining a road, such as a paver, the method comprising a value of an operating parameter being measured by one of a plurality of sensors (111, 121, 122, 123), each of the values being output to a display device (300), the display device outputting a representation of at least a part of the construction machine (100) together with the measured values of the operating parameters, at least one sensor being provided which measures an operating parameter relating to the interaction with other machines, and data corresponding to the operating parameter relating to the interaction with other machines being supplied to the display device, characterized in that the display device (300) comprises a virtual reality headset (350) and the representation is dependent on the operator's field of vision, the operating parameters of a working device being displayed in association with the working device when the working device is in the operator's field of vision, and the operating parameters of the working device preferably being displayed in a list area (390) when the working device is not in the operator's field of vision.

8. The method according to claim 7, wherein the measured operating parameters are represented in a superimposed manner with respect to the representation.

9. The method according to claim 7 or 8, wherein a real-time representation of at least a part of the construction machine (100) is captured by a camera (131) and transmitted to the display device (300), wherein the display device outputs an at least partially animated representation of at least the part of the construction machine (100).

10. The method according to any one of claims 7 to 9, wherein setpoints of the operating parameters are represented in addition to the measured operating parameters.

11. The method according to any one of claims 7 to 10, wherein the display device (300) comprises an operating element, with which the operator interacts with the representation and / or the measured operating parameters for controlling the construction machine (100).

12. The method according to any one of claims 7 to 11, wherein the construction machine (100) is a road paver and the working device is at least one of the drive (156) of the road finisher, the material hopper (101) for receiving material used for road construction, scraper belts (151) for transporting the material from the material hopper to a spreading screw (155), a screed (102), a heating system (152) for the screed or a levelling cylinder (154) for adjusting a towing point (157) of the screed, with at least one sensor (111, 121, 122, 123) measuring an operating parameter of the working device.