Construction machine for constructing or maintaining road and method therefor

Abstract

A construction machine (100) for constructing and / or maintaining a road, such as a road finisher, comprising at least a working device (101, 102), a display unit (300) and a plurality of sensors (111, 121, 122, 123), each sensor being adapted to measure a value of an operating parameter of the construction machine (100), the sensor being adapted to output data corresponding to the measured value to the display unit (300), and the display unit is adapted to output a representation of at least a portion of the construction machine (100) together with the measured value of the operating parameter.

Description

[0001] Description of the case

[0002] This application is a divisional application of Chinese invention patent application CN201910206569.6 filed on March 19, 2019. Technical Field

[0003] The invention relates to a construction machine for constructing and / or maintaining roads, such as a road finishing machine according to claim 1 , and to a method for displaying operating parameters of a construction machine for constructing and / or maintaining roads according to claim 9 . Background Art

[0004] Construction machines used for building or repairing roads are well known in the art. For example, these can be road finishing machines, which spread and compact materials (such as asphalt) onto the road. Compactors, which typically follow the road finishing machine in its direction of motion, are also such construction machines. These also include feeder trucks, which can supply asphalt mix or other materials to the road finishing machine. A combination of these vehicles can also be considered a construction machine.

[0005] When operating these construction machines, a large amount of information is generated about the environment and about the operation of the construction machines.

[0006] Using the example of a road finishing machine, information about the machine's position relative to the road edge is generated, for example. Furthermore, information about ambient temperature or humidity may be relevant. The road surface temperature in front of and behind the road finishing machine is particularly important. This is also relevant to the temperature in the material hopper of the road finishing machine or the temperature of the paving material (asphalt mix or similar material) in the material hopper.

[0007] Operating parameters that influence the behavior of construction machinery are also relevant. For example, when operating a road finishing machine, it's important to know the angle of attack or height of the paving screed, and therefore the setting of the leveling cylinders. The conveying speed of the chain conveyor, which feeds material from the material hopper to the auger, may also be relevant. Other dimensions may also be of interest to road finishing machine operators.

[0008] During the operation of construction machinery, a large amount of such data is already generated and is often stored for analysis purposes and, if necessary, evaluated at a later point in time. For example, it is also known to provide a monitoring device for a paving screed heating system, which can output the current operating state (heating on or off).

[0009] The vast amount of input data from the environment and from various devices of a construction machine is often inaccessible to the operator, and if inaccessible, it is difficult to process. In particular, there is a risk that the operator of the construction machine may be distracted from the actual operation of the construction machine, and in particular, from driving the construction machine due to the large amount of information or data available, which may increase the risk of accidents. Summary of the Invention

[0010] Therefore, on the basis of the known state of the art, the object to be achieved is to provide a construction machine and a method for displaying operating parameters of a construction machine, which will enable the driver or other operating personnel to obtain information about various operating parameters of the construction machine in the simplest and most understandable way, thereby ensuring that roadworks are carried out correctly and the risk of accidents is minimized.

[0011] According to the invention, this object is achieved by a construction machine for building or repairing roads according to claim 1 or a method for displaying operating parameters of a construction machine according to claim 9. Advantageous embodiments of the invention are included in the dependent claims.

[0012] According to the present invention, a construction machine for constructing and / or repairing roads (such as a road finishing machine) includes at least a working device, a display unit and a plurality of sensors, each sensor being suitable for measuring the value of an operating parameter of the construction machine, wherein the sensor is suitable for outputting data corresponding to the measured value to the display unit, and the display unit is suitable for outputting a representation of at least a part of the construction machine together with the measured value of the operating parameter.

[0013] The working equipment of a construction machine is defined as equipment used for building and / or repairing roads. This includes, for example, the screed of a road finishing machine, but also the material hopper in which road construction materials are stored. This also includes other equipment, such as the drive of the construction machine.

[0014] The plurality of sensors comprises at least two sensors, which preferably measure two different operating parameters. Operating parameters are defined as values or information characteristics of the operation of the construction machine or work equipment, or of the movement of the construction machine or of the environment. These include, for example, the speed and position of the road finisher, as well as the output rate of the road paving material, or the amount or temperature of the paving material stored in the material hopper. Other operating parameters are also included, such as the temperature (heating) or inclination angle of the paving screed, the conveying speed of the scraper conveyor, etc. Similarly, other operating parameters can also be provided, for example for a compactor behind the road finisher or a feeding vehicle (also called a feeder) that feeds the material hopper of the road finisher.

[0015] The construction machine does not have to be a single vehicle, such as a road finisher or a feeder vehicle, but can also be a vehicle group, for example comprising a road finisher, a compactor traveling behind it and a feeder traveling in front of it. In addition to the road finisher and / or the roller / compactor and / or the feeder vehicle, other vehicles can also be considered. A truck can also be considered as part of the vehicle group or as a separate "construction machine". The invention is not limited to this. The truck can then have the function of a feeder vehicle. Instead of a construction machine, the invention can also be implemented by a truck or more generally a feeder / feeder vehicle or a transport vehicle (also a truck).

[0016] The display unit is advantageously located on the construction machine, but does not necessarily have to be permanently connected to the construction machine.

[0017] In this context, the representation of a part of the construction machine on the display unit together with the measured values of the operating parameters should be understood to mean that at least two measured operating parameters or their measured values are displayed together with the part of the construction machine. For example, this means that the paving screed of a road finishing machine and the compaction pressure or the inclination angle or height of the paving screed are displayed together with the paving screed on the display unit.

[0018] This allows operators to easily and centrally obtain various information related to the operation of the construction machine by the driver or other operators. This reduces the number of instruments to be monitored by the operator, thereby facilitating machine operation while improving road safety.

[0019] In one embodiment, a construction machine is contemplated to include a camera configured to record a real-time representation of at least a portion of the construction machine and transmit the recorded real-time representation to a display unit. In this embodiment, images of at least a portion of the construction machine continuously captured by the camera are displayed on the display unit. Naturally, according to the present invention, this is displayed together with operating parameters. Thus, an operator can not only learn about the condition of the construction machine based on the received measured values of the operating parameters, but can also simultaneously obtain information that is readily apparent to the operator based on the real-time display but difficult to detect using sensors alone. This further facilitates operation of the construction machine.

[0020] It can also be provided that the operating parameter indicates at least one of the movement of the construction machine, the function of the work equipment, the operating mode of the work equipment and / or the position of the construction machine in the environment. The function of the work equipment is understood to be a value that characterizes the work equipment in operation, such as the current temperature of the heating system or the paving screed, or the speed at which a conveyor belt feeds paving material to the material hopper, or the speed at which a scraper conveyor removes material from the material hopper. The operating mode of the work equipment is preferably a property that is also associated with the work equipment, but which is usually static or quasi-static during the operation of the work equipment. For example, the construction width of a partially adjustable paving screed is an operating parameter that characterizes the operating mode of the work equipment. The operating mode can also be an indication of whether the work equipment is switched on at all. For example, an operating parameter associated with the screed heating can be set to "on" or "off" to indicate whether the heating is switched on (on) or not (off).

[0021] Provision can also be made so that the display of at least a portion of the construction machine and the measured values of the operating parameters can be superimposed on the display unit. This means that when at least a portion of the construction machine is displayed, the corresponding operating parameters are superimposed on the display, thereby creating a combined display of at least a portion of the construction machine and the operating parameters. This presentation can also be described as "mixed reality" or "augmented reality." In this way, the operator can easily assign the displayed measured values to, for example, working equipment of the construction machine.

[0022] Provision can also be made for the display unit to output at least one target value for at least one operating parameter in addition to the measured value of the operating parameter. This can particularly affect fluctuating operating parameters, such as the temperature of the paving material stored in the material hopper. The target temperature can be output by the display unit together with the actual temperature (the current measured value), allowing the operator or driver of the construction machine to readjust it if necessary. This further simplifies the operation of the construction machine.

[0023] Furthermore, the construction machine can be configured as a road finishing machine, and the work equipment can be configured as at least one of the following: a drive for the road finishing machine, a material hopper for receiving road construction material, a scraper conveyor for conveying material from the material hopper to an auger, a paving screed, a heating system for the paving screed, or a leveling cylinder for adjusting the attachment points of the paving screed, or at least one sensor for measuring operating parameters of the work equipment. The operating parameters according to the present invention, together with the representation of a portion of the construction machine, can provide a simplified and easily understandable representation of operating parameters of commonly used work equipment.

[0024] In one embodiment, the display unit is a touch display or virtual reality glasses. A touch display offers further interactive possibilities, allowing the operator or driver of the construction machine to not only receive information but also interact with the display unit to control or adjust the construction machine. Virtual reality glasses offer the advantage that, for example, measured values can be displayed to the operator while the operator can still focus on driving the machine and does not have to look away from the road at a separate display. Both embodiments facilitate the operation of the construction machine and improve operational safety. Virtual reality glasses include head-mounted displays and data glasses, which can be selected based on suitability.

[0025] In a further development of this embodiment, the display unit is or includes virtual reality glasses and is designed to display at least one operating parameter of the working equipment when the working equipment is in the field of view of the operator of the construction machine. For example, if a road finishing machine operator walking alongside the road finishing machine views the machine's paving screed, the operator can see information regarding the settings of the heating or leveling cylinders, which also determine the attachment points of the paving screed. On the other hand, if the operator views the material hopper, the operator can see information regarding the temperature of the paving material and the conveying speed of the face conveyor. This embodiment provides the operator with information or operating parameters relevant to the working equipment they are viewing, thereby concealing information that may not be relevant to the operator at the time.

[0026] The method of displaying operating parameters of a construction machine (such as a road finishing machine) used for building or repairing roads according to the present invention includes measuring the values of the operating parameters using a plurality of sensors and outputting these values to a display unit, which outputs a representation of at least a portion of the construction machine along with the measured values of the operating parameters. Consequently, the operation of the construction machine and its operation monitoring can be performed in a compact manner, while also increasing road traffic safety or safety when operating the construction machine, and enabling reliable execution of construction work.

[0027] It can be provided that the measured operating parameters are superimposed on the display. In this way, the operator can easily associate the working equipment with the measured values of the operating parameters, for example.

[0028] In one embodiment, the display unit includes virtual reality glasses and displays the representation depending on the operator's field of view. When the work equipment is in the operator's field of view, the operating parameters associated with the work equipment are displayed, or when the work equipment is not in the operator's field of view, the operating parameters of the work equipment are displayed in a list area. As described above, for example, one or more paving screed operating parameters can be displayed to the operator while the operator is viewing the paving screed. However, to display other information or measured operating parameters to the operator, an area in the display can include a list, table, or similar display in the form of virtual reality glasses, showing other operating parameters unrelated to the working equipment operating parameters currently being viewed by the operator. Thus, the operator is provided with the information they may need without losing any information, while still being able to focus on operating or driving the machine.

[0029] In an alternative embodiment, a real-time display of at least a portion of the construction machine is recorded by a camera and transmitted to a display unit, wherein the display unit is an interactive touch display and / or wherein the display unit is an at least partially animated display of at least a portion of the construction machine. Real-time visualization of the state of the construction machine portion on the display allows the operator to visualize other states of the construction machine not measured by sensors, in addition to the operating parameters measured by the sensors. This allows for comprehensive yet simple monitoring of the construction machine.

[0030] On the other hand, an animated display of at least a portion of the construction machine on the display unit may provide improved interaction options, for example by enlarging a portion of the display or interacting therewith to display additional control options.

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

[0032] Furthermore, the display unit may include control elements, via which the operator interacts with the display and / or the measured operating parameters to control the construction machine. For example, the control element may be a touch-sensitive touchscreen of the touch display. However, a keyboard and mouse, joystick, or other elements are also conceivable. These control elements provide interaction options that allow the operator to centrally influence the operating parameters of the construction machine.

[0033] Furthermore, the construction machine can be a road finishing machine, and the working equipment can be at least one of the following: a drive for the road finishing machine, a material hopper for receiving road construction material, a scraper conveyor for conveying material from the material hopper to an auger, a paving screed, a heater for the paving screed, or a leveling cylinder for adjusting the attachment point of the paving screed, or at least one sensor for measuring an operating parameter of the working equipment. Thus, the method according to the present invention can be advantageously used with typical working equipment used with road finishing machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A construction machine according to one embodiment is shown.

[0035] Figure 2 A construction machine including a plurality of vehicles according to one embodiment is shown.

[0036] Figures 3a to 3c A display unit for displaying operating parameters according to some embodiments is shown. DETAILED DESCRIPTION

[0037] Figure 1 A construction machine 100 is shown on a road 140 to be constructed or renovated according to an embodiment of the present invention. In the embodiment shown here, the construction machine comprises only one vehicle, which in the illustrated form is a road finishing machine. The road finishing machine is used to apply a road surface to the ground. For example, the road finishing machine can apply an asphalt mixture, a concrete mixture, or other suitable material.

[0038] As a construction machine 100, a road finishing machine can be designed in a conventional manner and can be a wheeled or tracked road finishing machine with a suitable drive / motor 156 (diesel engine, electric motor, or the like). These vehicles typically include a cab 103, a material hopper 101, and a paving screed 102. Material for paving or finishing the road is stored in the material hopper and fed to the paving screed 102 via a scraper conveyor 151 (shown here only in dashed form) or other suitable equipment at the bottom of the hopper. In most cases, an auger 155 spreads the material over at least a specific width of the paving screed 102 to ensure that the material is spread as evenly as possible on the road. Known paving screeds include a heating device or heater 152 for heating the material, and the paving screed is maintained in a specific position relative to the road surface by a leveling cylinder 154 and a corresponding connection 153 to the leveling cylinder 154. The leveling cylinder 154 or its arrangement also defines the attachment point 157 of the paving screed. The paving screed 102 is typically equipped with a compacting unit for compacting the material on the road to be paved. Screed relief may also be provided.

[0039] The material hopper 101 and the paving screed are examples of devices generally referred to as “working equipment” 101 , 102 , which a construction machine utilizes to assist in the construction or treatment of a road.

[0040] In addition to the road finishing machine 100, other vehicles used in road construction can also be considered as construction machines. For example, a road roller / compactor and / or a feeder can also be used as a construction machine. Furthermore, other vehicles, such as a truck serving as a feeder, can be considered individually or in any combination with one another in the form of a vehicle group.

[0041] During the operation of such a construction machine, a large amount of information is typically available to the driver of the construction machine or an operator traveling alongside the machine. This includes information about the construction machine itself, such as its speed or the temperature of the paving screed (screed heating 152 ) or the orientation of the paving screed, as well as operating parameters related to the material hopper and the material contained therein. Furthermore, the driver or operator may be interested in information about the road surface ahead of the road finishing machine in the direction of travel or the road surface already paved by the road finishing machine 100. This includes, for example, the temperature of the ground (the so-called "surface") ahead of the road finishing machine and the temperature of the road surface behind the road finishing machine.

[0042] To measure this information or general operating parameters, the present invention provides that the construction machine includes a plurality of, or at least two, sensors for measuring operating parameters. For example, a sensor 111 may be provided, which is located in or on the material hopper 101 and measures at least one temperature associated with the material contained therein. For example, sensor 111 may measure the near-surface temperature of the asphalt mixture or its core temperature, or the temperature of the material in the area of the aforementioned scraper conveyor 151, immediately before the material is fed from the scraper conveyor to the paving screed.

[0043] One or more sensors may also be provided for measuring operating parameters of the paving screed. For example, if the width of the paving screed is intended to be variable, one or more sensors 121 may be provided for measuring or recording the width of the paving screed. Sensors may also be used to measure the inclination of the paving screed 102 relative to the horizontal. In addition, these sensors or another sensor 122 may be used to determine the contact pressure of the compacting unit. Sensors 123 may also be used to measure, for example, operating parameters of the auger (rotational speed or the like), or the temperature of a heating system 152 assigned to the paving screed or of components of the paving screed 102 itself. Additionally or alternatively, sensors may be used, for example, to measure the distance between the end of the paving screed and the edge of the road. Other sensors may also be used, such as sensors for measuring the current position of the road finishing machine or the general position of the construction machine 100 (e.g., GPS sensors).

[0044] Sensors may also be provided to measure information about interactions with other machines or operating parameters. For example, a radar sensor may be provided to determine the distance to a feeder, such as Figure 2 As shown in .

[0045] Already existing sensors can also be used here. For example, already existing infrared cameras can be used to measure the temperature of the applied road surface.

[0046] In addition to these sensors which measure the operating parameters of the construction machine, one or more cameras 131 may also be provided (in Figure 1 ), which record a display of the construction machine and / or its surroundings, preferably in the form of a video or live stream in real time. However, these cameras are not required.

[0047] In principle, all sensors already provided in the construction machine 100 can be used. Furthermore, further sensors can be provided in the construction machine 100 according to the invention for recording operating parameters that can be considered relevant in order to be able to measure the corresponding operating parameters.

[0048] According to the invention, data corresponding to the measured values of the operating parameters are fed to a display unit to be described below, on which the operating parameters are displayed together with a display of at least a part of the construction machine.

[0049] Figure 2 Another embodiment of a construction machine 200 is shown. In this embodiment, the construction machine is formed by a plurality of vehicles. In addition to the road finishing machine 100, as shown in FIG. Figure 1 As already described in the previous section, a feeding vehicle 203 is provided, which can feed asphalt mixture or other material to be deposited on the road to the material hopper of the road finishing machine 100 via an endless conveyor belt 230. The feeding vehicle 203 can also include one (or more) corresponding sensors for measuring operating parameters, such as the amount of road material fed per time unit (e.g., measured in tons per hour). The data obtained by the sensor (which corresponds to the measured value of the operating parameter) can then also be transmitted to the display unit.

[0050] One or more compactors 201 and 202 may follow the road finishing machine 100 in the direction of travel of the construction machine 200, compacting the paved surface applied by the road finishing machine 100. The compactors 201 and 202 may be designed, for example, as road rollers. One or more sensors may also be used to measure relevant operating parameters, such as the distance to the road finishing machine, compaction pressure, speed, or roadbed temperature. Data corresponding to the operating parameter measurements measured by these sensors may also be fed to a display unit.

[0051] Figure 3a A first embodiment of a display unit 300 according to the present invention is shown. In the embodiment shown here, the display unit is typically designed primarily as a display or, more generally, as a device for displaying information. The display unit 300 may include a touchscreen 301 or similar image output surface. Furthermore, one or more operating elements 395 in the form of a keyboard and mouse may be assigned to the display unit 300. Alternatively or additionally, if a touchscreen display is used, the touchscreen itself may also serve as a touch-sensitive surface for interaction, so that the operating elements 395 shown may be designed, for example, as interactive menus. However, this is not absolutely necessary. Furthermore, the display unit 300 preferably includes or is assigned a device for storing and processing data (a processor, memory, or the like). Devices for exchanging data with sensors may also be provided. A holder 396 may be provided for attaching the display unit, for example, to a driver's cab or to a construction machine, such as a clamp that surrounds the display unit. This holder can be permanently mounted on or in the construction machine and allows the display unit 300 to be removably connected to the construction machine.

[0052] On the display unit 300 according to the present invention, the construction machine ( Figure 3a A display of at least a portion of the road finishing machine 321 is displayed together with measured values of operating parameters.

[0053] The display of a part of the construction machine 321 can be a purely animated (virtual) display (ie not based on a real image taken, for example with the aid of Figure 1 Alternatively, a real image of the construction machine 100 recorded by the camera 131 can also be displayed.

[0054] According to the present invention, operating parameters are displayed in such a way that the operator or driver of construction machine 100 can assign them to the corresponding work equipment (e.g., paving screed, heating system, conveyor belt in the case of a feeder vehicle, or the like). For example, operating parameter 312 affecting the entire width of the paving screed is shown together with paving screed 310. In the illustrated embodiment, this is accomplished by displaying the value of the measured operating parameter b = 4.5 meters in a frame superimposed on the construction machine's display and linking it to the associated work equipment, for example, by means of arrows, dashed lines, or other means. The same applies to operating parameter 314, which represents the paving screed angle of attack α = 2° achieved by the leveling cylinders. The temperature of the paving material in the material hopper 324 can also be indicated by a corresponding display 315 of temperature T = 175°C and can be associated with the material hopper so that the operator or driver of the construction machine can see at a glance that this value indicates the temperature of the paving material.

[0055] Furthermore, other operating parameters that do not necessarily affect the road finishing machine itself can also be displayed. For example, the road surface temperature in front of the road finishing machine 321 in the direction of travel can be displayed by displaying the operating parameter 316 of T=3.4°C. The road surface temperature applied directly behind the road finishing machine can also be displayed in the display 313. The value T=120°C is given here as an example. In addition, one or more operating parameters can be specified that characterize the movement of the construction machine. Figure 3a In the embodiment shown in , this has been achieved using the operating parameter 311 , which in the case of speed is v=6 m / min.

[0056] While the operating parameters are always displayed next to the corresponding work equipment, or, for example, next to the road surface, it can be seen 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 can also be displayed in the area of paving screed 310. This can be selected according to the purpose, so that the display allows the operator to assign the measured values of the operating parameters to the entity being described (such as the work equipment or the road surface), but the operator can also read the measured values of the operating parameters without difficulty. In principle, the displayed operating parameters are initially superimposed on a part of the construction machine in the form of mixed reality or augmented reality.

[0057] exist Figure 3a In the embodiment shown in , only the values of the operating parameters measured by the sensors are shown. However, in addition to these values, which are usually referred to as "actual values", it is also advantageous to also display the target values of at least one or at least some of the operating parameters. This can be done, for example, by displaying not only the actual value but also the target value in the outer frame and, if necessary, even the difference between the two, so that the operator can adapt the working mode or operating mode of the construction machine or working equipment accordingly. For example, when building a road, it can be set so that the material to be paved has a temperature of 135°C. This is the "target value" of the relevant operating parameter. This will be displayed together with the currently measured temperature in field 313. The difference between the target value and the actual value or the actual value and the target value can also be displayed in field 313.

[0058] While the previously described embodiments only output numerical values that are decisive, for example, for the movement of the construction machine or for the working equipment or operating parameters of the construction machine, other embodiments are also conceivable. Thus, operating parameters that cannot be specified numerically or are not usually specified numerically can also be displayed. This applies, for example, to the heating of the paving screed or the face conveyor. Here, for example, it is possible to specify whether the heating is switched on or off, instead of or in addition to the conveying speed of the face conveyor. The same applies to the heating or auger assigned to the paving screed. Furthermore, error messages or warnings can be output on the display unit, for example, superimposed on the entire display or at least on a portion of the display.

[0059] Although in principle at least a part of the construction machine is displayed on the display unit 300, it is also possible to display the entire construction machine with reference to the road, e.g. Figure 3a As shown in .

[0060] Figure 3b Another embodiment of a display on a display unit is shown. In the embodiment shown here, only a part of a construction machine (here also a road finishing machine) is shown. For example, the display of the material hopper is basically omitted here. However, Figure 3b The embodiment shown in FIG. 1 shows a paving screed and more detailed operating parameters related to the paving screed.

[0061] Therefore, in addition to the Figure 3a In addition to the operating parameters 314 and 313 shown in Figure 3, further operating parameters are shown. For example, operating parameter 331 indicates the temperature of the paving material directly in the area of the paving screed, T = 130°C. Operating parameter 332 indicates the throughput rate or spreading rate achieved by the auger with R = 20.5 t / h. Operating parameter 334 describes the total width and / or the width of the extendable elements of the paving screed. Using conventional road finishing machines, paving widths of up to 16 meters can be achieved. In this case, it is particularly advantageous if the ends of the paving screed have a certain "droop" relative to the center of the paving screed in order to compensate for the buoyancy of these edges on the partially liquid or at least viscous paving material. This droop can be several centimeters and can also be referred to as operating parameter 333, in this case D = 1 cm. Furthermore, operating parameter 335 can be used to display the inclination angle of the road surface or the construction machine 321 relative to the horizontal (here β = 0.4°), which has been obtained from Figure 3a The known operating parameter 314 of α=2° may be used to dictate the setting of one or more leveling cylinders.

[0062] according to Figure 3bThe description of the operating parameters of is to be understood as exemplary only and not definitive and also not mandatory. For example, another operating parameter can be specified instead of operating parameter 332. Of course, this also applies to the other operating parameters shown.

[0063] from Figure 3a In more general terms, the operator of the display unit can, for example, Figure 3a The representation shown in the interaction is obtained Figure 3b . Already referenced Figure 3a The operating elements described can be used for this purpose. For example, if the display unit 300 is equipped with a touch-sensitive touch display 301 (see Figure 3a ), then touching the display in the area of the paving screed 310 will allow the operator to Figure 3a The expression in brings Figure 3b In the expression, Figure 3b Shows an enlarged and detailed view of the work equipment (in this example, a paving screed). Figure 3a This is advantageous if the representation in shows an animated view of the construction machine. Figure 3a The illustration in FIG is made with the aid of a camera 131 (see Figure 1 ) shows a real-time representation of the construction machine, then appropriate interaction with the display unit can still result in Figure 3b For example, by selecting a menu item or by a corresponding input using an input device, a display according to Figure 3b A more detailed representation of .

[0064] The ability to switch between a less detailed overall view of the construction machine and a display of only a portion of the construction machine (possibly with more operating parameters) allows the operator to access the operating parameters relevant to him at a glance, requiring minimal interaction with the display unit. This makes it easier for the operator to perform operations and, especially when the display unit is used by a driver, minimizes the driver's attention from the actual task of controlling the construction machine by interacting with the display unit. This minimizes the risk of accidents.

[0065] It goes without saying that Figure 3a and Figure 3b The illustrations in are not limited to road finishing machines, but can also be used to show other construction machines used in the construction or renovation of roads. For example, as a supplement or alternative to a road finishing machine, such as Figure 2 The feed vehicle shown in can also be displayed on a suitable display unit.

[0066] For example, Figure 3a and Figure 3bThe display unit 300 shown in the figure in the form of a display can be fixed in the cab of the construction machine 100. Here, the display unit can not only display the operating parameters of the vehicle on which it is installed, but also the operating parameters of other vehicles, such as Figure 2 The operating parameters of the feeder or dozer are shown in . Therefore, Figure 2 As shown in , the driver of the road finishing machine 100 can be provided with all required information not only about the road finishing machine itself, but also about other vehicles interacting with the road finishing machine in order to optimize the operation of the road finishing machine.

[0067] Alternatively or additionally, the display unit can also be arranged on the outside of the construction machine in the form of a mobile display (such as a tablet computer). The display unit can also be permanently mounted on the housing of the construction machine so that an operator traveling beside the construction machine can monitor the operating parameters.

[0068] It is also possible to provide that the display unit is designed as a tablet computer or similar mobile display unit, but can be attached to a corresponding receptacle or holder of the construction machine. With this embodiment, it is possible to provide that the display on the display unit, in particular the representation of the construction machine or a part thereof, and the displayed operating parameters, changes depending on whether the display unit is arranged in the corresponding receptacle. It is also possible to provide that the representation changes depending on the suspension or mounting on which the display unit is arranged.

[0069] For example, a housing can be provided in the drive area of the construction machine 100. If a display unit is placed in this housing, the display on the display unit can be changed to display the drive unit and the operating parameters associated with the drive / motor, and, for example, when the road finishing machine is designed as a crawler road finishing machine, the operating parameters associated with the sprocket can be displayed. If the display unit is placed in the housing in the paving screed area, the paving screed can be displayed, for example, as Figure 3b As shown in , this may also affect relevant operating parameters.

[0070] In this embodiment, the operator's interaction with the display can be further simplified, since information related to a part of the work device or machine is always displayed without additional interaction. If the display unit is not located in any housing, a general display can be performed, such as Figure 3a , giving the operator an overview of some of the most relevant operating parameters.

[0071] In order for the display unit to identify in which holder it is arranged and to change the display accordingly, it can be provided that each holder has, for example, an electronic or mechanical identification that can be recognized by the display unit and / or a processor unit associated with the display unit. The processor unit and / or the display unit is then adapted to change the display according to the recognized holder and thus according to the position of the display unit. This can be done, for example, by means of RFID identification.

[0072] Figure 3c Another embodiment of a display unit 300 is shown in the form of data glasses, also known as virtual reality glasses 350. This can be designed as a head-mounted display, which includes an opaque screen that can be positioned in front of the eyes. Alternatively, it can also be provided that the virtual reality glasses 350 are designed in the form of standard "glasses" with a built-in display in the form of smart lenses or data glasses. In a first embodiment, the features of the virtual reality glasses are similar to Figure 3a and Figure 3b The features of the display unit shown in are comparable to those of the display unit shown in , whereas in a second embodiment, in the form of data glasses, an artificial display (e.g. by means of an animated display of the construction machine or an image taken by a camera) is not required, and the "display" of at least a part of the construction machine is achieved by the operator viewing the construction machine through the data glasses, i.e. the display corresponds to the current field of view of the operator and the wearer of the data glasses.

[0073] therefore, Figure 3c The invention is primarily concerned with embodiments of virtual reality glasses that are data glasses, rather than embodiments that are head mounted displays, since reference has been made in this embodiment to the embodiment of virtual reality glasses that are data glasses. Figure 3a and Figure 3b Describes the basic features.

[0074] exist Figure 3c In the embodiment shown in FIG, an operator views a portion of a construction machine 360, namely at least a portion of a material hopper 370, through glasses 350, and also views a road 380 in front of the construction machine in the direction of travel. In the embodiment shown, the operator is shown an area 371 in or on the left side of the lenses of data glasses 350, which highlights material hopper 370 and displays an operating parameter 372 (temperature of the paving material) and an operating parameter 373 assigned to the material hopper (hourly throughput R = 10 t / h of the face conveyor). This is accomplished using known image recognition methods, by which the data glasses or their associated data processing device or processor recognize material hopper 370 and assign the values of the operating parameters measured by the sensors to it. Furthermore, the operator can see road 380 through data glasses 350, so that the temperature 361 of road 380 (here, T = 6°C) can also be displayed in the left area of the data glasses.

[0075] It goes without saying that other operating parameters can also be displayed here, which not only affect the material hopper or the road, but also, for example, characterize the paving screed or other working equipment. All operating parameters discussed so far can be taken into account. Furthermore, the corresponding operating parameters do not have to be displayed in the left lens or on the left side of data glasses 350, but can also be displayed in each lens or on the right side of data glasses 350.

[0076] The embodiment shown here displays certain operating parameters as a function of the field of view or viewing direction of the wearer of data glasses 350. This can also be provided for virtual reality glasses in the form of head-mounted displays. However, this means that the operator typically does not see all components or parts of the construction machine and may therefore lack information. Therefore, it can be provided that other operating parameters of working equipment or other equipment / components of the construction machine 100 that are not currently in the operator's field of view are displayed in list area 390 of the data glasses (or virtual reality glasses in general, as this also applies to head-mounted displays). For example, if the operator turns his head so that the paving screed 102 is in his field of view instead of the material hopper 101, the operating parameters of the paving screed 102 can be displayed in the left lens of data glasses 350, as explained here as an example of the operating parameters of the material hopper 350. The operating parameters of the material hopper can then be displayed in list area 390. In the embodiment shown here, in which the wearer or operator of the data glasses sees the material hopper, additional operating parameters such as the speed of the construction machine, the paving screed's paving width, or the temperature of the road surface can be displayed in list area 390.

[0077] It goes without saying that the virtual reality glasses 350 (regardless of whether they are available as a head-mounted display or as data glasses) can be used to display all the operating parameters that have been explained. In particular, when using a head-mounted display as virtual reality glasses, it is also possible to display an image similar to the data glasses 350 by displaying a real-time representation of the construction machine on the display, which depends on the operator's field of view or viewing direction and is generated, for example, by the camera 131, as described with reference to FIG. Figure 1 Although the screen is not transparent, the operator can view the current position in and around the construction machine while being supplied with the operating parameters required to control the construction machine.

[0078] In principle, virtual reality glasses are used as a form of augmented reality to display the operating parameters so that they are superimposed on the actual display of the environment, preferably without significantly obstructing the view of the construction machine.

Claims

1. A construction machine (100) for constructing or maintaining roads, such as a paver, the construction machine comprising at least a 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 sensor is capable of outputting data corresponding to the measured value to the display device (300), and the display device is configured to output a representation of at least a portion of the construction machine (100) together with the measured value of the operating parameter, wherein at least one sensor is configured to measure an operating parameter related to interaction with other machines, thereby being capable of providing data corresponding to the operating parameter related to interaction with other machines to the display device, It is characterized by: The display device (300) includes a virtual reality head-mounted device (350) configured so that the representation depends on the operator's field of view, and when the working device is in the operator's field of view, at least one operating parameter of the working device is displayed, and when the working device is not in the operator's field of view, the operating parameter of the working device is preferably displayed in a list area (390).

2. The construction machine (100) according to claim 1, characterized in that Also included is a camera (131) for capturing a real-time representation of at least a portion of the construction machine (100) and transmitting the captured real-time representation to a display device (300).

3. The construction machine (100) according to claim 1 or 2, characterized in that: The operating parameters are indicative of at least one of a movement of the construction machine (100), a function of the work equipment, an operating mode of the work equipment and / or a position of the construction machine (100) in the environment.

4. The construction machine (100) according to any one of claims 1 to 3, characterized in that: Measured values representing operating parameters of at least a part of the construction machine (100) can be displayed in a superimposed manner by a display device (300).

5. The construction machine (100) according to any one of claims 1 to 4, characterized in that: The display device (300) is designed to output at least one set value of at least one operating parameter in addition to the measured value of the operating parameter.

6. The construction machine (100) according to any one of claims 1 to 5, characterized in that: The construction machine (100) is a road paver, and the working equipment is at least one of the following: a drive (156) of the road paver, a material hopper (101) for receiving road construction material, a scraper conveyor (151) for conveying material from the material hopper to an auger (155), a paving screed (102), a heating system (152) for the paving screed (102), or a leveling cylinder (154) for adjusting a towing point (157) of the paving screed, wherein at least one sensor (111, 121, 122, 123) is arranged to measure an operating parameter of the working equipment.

7. A method for displaying operating parameters of a construction machine (100) for constructing or maintaining roads, such as a road paver, the method comprising measuring a value of an operating parameter by one of a plurality of sensors (111, 121, 122, 123) and outputting each value to a display device (300); the display device outputting a representation of at least a portion of the construction machine (100) and the value of the measured operating parameter; providing at least one sensor for measuring an operating parameter related to interaction with other machines; and providing data corresponding to the operating parameter related to interaction with other machines to the display device. Its characteristics are: The display device (300) includes a virtual reality head-mounted device (350), and the representation depends on the operator's field of view, when the working device is in the operator's field of view, the operating parameters of the working device associated with the working device are displayed, and when the working device is not in the operator's field of view, the operating parameters of the working device are preferably displayed in a list area (390).

8. The method according to claim 7, characterized in that The measured operating parameters are represented in a superimposed manner relative to this representation.

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

10. The method according to any one of claims 7 to 9, characterized in that In addition to the measured operating parameters, the set points for the operating parameters are also indicated.

11. The method according to any one of claims 7 to 10, characterized in that The display device (300) comprises operating elements via which an operator interacts with the represented and / or measured operating parameters to control the construction machine (100).

12. The method according to any one of claims 7 to 11, characterized in that The construction machine (100) is a road paver, and the working equipment is at least one of the following: a drive (156) of the road finishing machine, a material hopper (101) for receiving road construction materials, a scraper conveyor (151) for conveying materials from the material hopper to an auger (155), a paving screed (102), a heating system (152) for the paving screed, or a leveling cylinder (154) for adjusting the towing point (157) of the paving screed, at least one sensor (111, 121, 122, 123) for measuring operating parameters of the working equipment.

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