Patent Application
20250067009
This application claims foreign priority benefits under 35 U.S.C. ยง 119(a)-(d) to European patent application number EP 23192606.4, filed Aug. 22, 2023, which is incorporated by reference in its entirety.
The disclosure relates to the field of road construction with a road paver. The disclosure relates in particular to paving a multi-layer road surface along a roadway.
A method for automated control of a road paver is disclosed in EP 1 118 713 B1. A measuring point is fixedly attached to a screed of the road paver. The measuring point can be arranged, for example, at the end of an extendable screed member of the screed. Target values for the position of the measuring point are determined by way of planning data. A positional deviation between an actual position of the measuring point and a target position is calculated. The screed is adjusted based on the positional deviation calculated.
The system of EP 1 118 713 B1 can only be used if suitable planning data is available.
DE 10 2020 117 095 A1 describes a road paving control unit that can generate a boundary map of a pavement based on positions of a first screed extension and a second screed extension. In some cases, the boundary map can be generated as a two-dimensional digital model or a three-dimensional digital model of the pavement or the paved work surface.
It is known from practice to pave a multi-layer road surface by driving along a roadway several times with a road paver, wherein the road paver is steered manually by a driver in each case and the screed width of the road paver is adjusted manually by at least one screed operator.
It is an object of the disclosure to provide an improved method for paving a multi-layer road surface.
According to an aspect of the disclosure, a method for paving a multi-layer road surface is provided. A first pavement layer is paved along a roadway using a first road paver. A second pavement layer is paved over the first pavement layer using the first road paver or using a second road paver. Paving data is recorded when the first pavement layer is paved. The paving data allows determining at least a progression track traveled during paving of the first pavement layer by a screed outer edge of the first road paver. The paving data is used to control the first road paver or the second road paver when the second pavement layer is paved.
By recording the paving data when the first pavement layer is paved, information is obtained that can facilitate paving the second pavement layer. The paving data can be tapped quasi as a by-product of the paving process of the first pavement layer. A separate step for obtaining the paving data as part of a planning process can be omitted or simplified.
By using the paving data when the second pavement layer is paved, the second pavement layer can be paved to be particularly well matched to the first pavement layer. By paving the second pavement layer in a manner that is matched to the first pavement layer, high quality pavement can be obtained.
The progression track traveled by the screed outer edge of the first road paver when paving the first pavement layer can represent a course of a lateral outer boundary of the first pavement layer. The paving data can facilitate correct positioning of the second pavement layer relative to the first pavement layer. The paving data can facilitate the paving process of the second pavement layer with a progression track that corresponds as closely as possible to the progression track of the first pavement layer.
The progression track traveled by the screed outer edge of the first road paver can be a progression track of a point of the screed outer edge or a point on the screed outer edge. Preferably, the progression track traveled by the screed outer edge of the first road paver is a progression track of a rear end or a rear end point of the screed outer edge. The progression track of a rear end or a rear end point of the screed outer edge can represent a progression track of a lateral outer boundary of the first pavement layer.
When paving the first pavement layer, the first road paver can be controlled in part or entirely manually by one or more operators. For example, extension positions of extension members, in particular a left extension member and a right extension member, of a screed of the first road paver can be manually controlled when paving the first pavement layer. Additionally or alternatively, for example, steering the first road paver can be controlled manually when paving the first pavement layer. Additionally or alternatively, for example, setting a lateral inclination angle of the screed of the first road paver can be controlled manually when paving the first pavement layer.
The first road paver or the second road paver can be controlled manually at least in part based on the paving data when the second pavement layer is paved. For example, an operator of the first road paver or of the second road paver can be shown setting recommendations based on the paving data when the second pavement layer is paved. Paving the second pavement layer can be simplified by the setting recommendations.
The first road paver or the second road paver can be controlled in an automated manner at least in part based on the paving data when the second pavement layer is paved. The operation of the first road paver or of the second road paver can be simplified by at least partial automated control when the second pavement layer is paved.
The first road paver can comprise a first control device. The first control device can be configured to control one or more functions of the first road paver. The second road paver can comprise a second control device. The second control device can be configured to control one or more functions of the second road paver.
The paving data can be recorded when the first pavement layer is paved. The paving data can be recorded by the first road paver. The paving data can be recorded by the first control device. The paving data can be stored in a data storage device. The data storage device can be provided as part of the first road paver. The data storage device can be connected to the first road paver by way of data communication. The data storage device can be configured, for example, as a cloud storage device. The data storage device can be configured as a portable data medium that can be connected to the first road paver. The portable data medium can be configured, for example, as a diskette, or as a CD, or as a USB memory stick, or as a hard disk, or as an SSD, or as a flash memory device. The data storage device can be part of an external electronic device, in particular of a smart device. The external electronic device can comprise an operating system and a user interface. The external electronic device can be a handheld device. The external electronic device can comprise a display, in particular a touchscreen. The external electronic device can be configured, for example, as a PC, or as a notebook, or as a tablet PC, or as a smartphone. The external electronic device can be connected to the first road paver for data communication. The external electronic device can be connected to the first road paver by way of a wireless data connection and/or can be registered at the first road paver. An app for saving or loading the paving data can be installed on the external electronic device. The app can be configured to edit the paving data.
The first control device can control the first road paver in an automated manner at least in part based on the paving data when the second pavement layer is paved. The second control device can control the second road paver in an automated manner at least in part based on the paving data when the second pavement layer is paved. If the second pavement layer is paved with the second road paver, the paving data can be transferred to the second road paver before the second pavement layer is paved, or the second control device can retrieve the paving data from a storage device provided outside the second road paver, in particular from a cloud storage. The second road paver retrieving the paving data can comprise transferring, in particular copying, the paving data to the second road paver, or the second road paver accessing the paving data. For example, the second road paver, in particular the second control device, can copy the paving data from a cloud storage. The paving data can be processed in particular in a cloud and then retrieved from the cloud by the second road paver. In particular, the paving data can be transferred from the data storage device to the second road paver or the second control device can retrieve the paving data from the data storage device, which can be configured in particular as a cloud storage. The paving data can be retrieved by the second road paver after the first pavement layer has been completely paved. The paving data can be retrieved by the second road paver already while the second pavement layer is being paved. In particular, the second road paver can retrieve the paving data continuously, or periodically, or at least several times while the first pavement layer is being paved.
The second road paver or at least a function of the second road paver can be controlled remotely through the cloud based on the paving data.
The fact that the paving data allows a specific piece of information, such as a progression track traveled by a screed outer edge of the first road paver during paving of the first pavement layer, to be determined can comprise that the corresponding information is contained directly in the paving data.
The fact that the paving data allows a specific piece of information, such as a progression track traveled by a screed outer edge of the first road paver during paving of the first pavement layer, to be determined can comprise that the corresponding information can be determined from the paving data alone.
The fact that the paving data allows for a specific piece of information, such as a progression track traveled by a screed outer edge of the first road paver during paving of the first pavement layer, to be determined can comprise that the corresponding information can be determined from the paving data while taking into account one or more known additional pieces of information. The known additional information can comprise, for example, machine data of the first road paver, in particular dimensions of the first road paver.
The paving data can allow for determining a progression track traveled by a left screed outer edge of the first road paver during paving of the first pavement layer. Alternatively or additionally, the paving data can allow for determining a progression track traveled by a right screed outer edge of the first road paver during paving of the first pavement layer. The progression track traveled by the respective screed outer edge can be represented in a stationary coordinate system.
The progression track traveled by a screed outer edge during paving of the first pavement layer can correspond at least substantially to a course of a lateral boundary of the first pavement layer that is paved. Using the progression track traveled by a screed outer edge during paving of the first pavement layer can simplify paving the second pavement layer in the correct position and with the correct width.
The paving data can allow for a progression track that was traveled by a reference point that is stationary relative to a chassis of the first road paver during paving of the first pavement layer to be determined. The reference point can be, for example, a theoretical turning point of the first road paver. The progression track traveled by the reference point can represent a travel path of the first road paver during paving of the first pavement layer.
Progression tracks described, in particular progression tracks of screed outer edges or a progression track of a reference point that is stationary relative to the chassis of the first road paver, can be progression tracks formed by discrete points or be continuous progression tracks. The progression tracks can comprise, for example, at least one data point per meter of the first pavement layer that is paved.
The paving data can allow a progression of an orientation of the first road paver that is traveled during paving of the first pavement layer to be determined. The orientation of the first road paver can be specified, for example, as an angle between a current paving travel direction of the road paver and a certain direction, for example, a north-south direction. The progression of the orientation of the first road paver can be a location-dependent course. The paving data can specify, for example, for each data point of a position of the reference point that is stationary relative to the chassis of the first road paver a value which defines a corresponding orientation of the first road paver. For example, at least one data point per meter of the first pavement layer that is paved can be recorded for the orientation of the first road paver.
The paving data can allow for the progression of a lateral inclination angle of a screed of the first road paver traveled during paving of first pavement layer to be determined. The lateral inclination of the screed can be an inclination along a transverse direction that is transverse to the paving travel direction. The lateral inclination angle can be an angle with respect to a horizontal plane. For example, a region of the screed which, in relation to the paving travel direction, is on the left can be disposed higher or lower than a region of the screed which, in relation to the paving travel direction, is on the right. A lateral inclination of the screed can be used to pave an inclined road surface, for example, in curves. For example, at least one data point per meter of the first pavement layer that is paved can be recorded for the lateral inclination angle.
Recording the paving data can comprise determining and/or recording positions of at least two position measuring points in a stationary coordinate system. The at least two position measuring points can be two position measuring points or more than two position measuring points. The at least two position measuring points can be provided in a stationary manner on a chassis of the first road paver. The at least two position measuring points can be provided at known positions in a stationary manner on a chassis of the first road paver. The positions of the at least two position measuring points can be determined and/or recorded in pairs. The positions of the at least two position measuring points can be determined and/or recorded periodically when the first pavement layer is paved.
In particular when taking into account known geometric conditions of the first road paver, it can be determined from a data pair recorded at a specific time, which contains the positions of the two position measuring points at the specific time, which position the reference point that is stationary relative to the chassis of the first road paver has assumed at the specific time, in particular the theoretical turning point of the first road paver. Based on the data pair, an orientation of the first road paver at the specific time can be determined additionally or alternatively, in particular taking into account known geometric conditions of the first road paver.
Recording the paving data can comprise determining a position of a left screed outer edge of the first road paver and/or a position of a right screed outer edge of the first road paver. The position of the respective screed outer edge can be a position of a point on the screed outer edge, in particular a position of a rear end or a rear end point of the screed outer edge. The position of the respective screed outer edge can be determined, for example, directly by a position sensor provided on the screed outer edge, such as a (Global Positioning System) GPS sensor. The position of the respective screed outer edge can be determined based on an extension position of an extension member of the screed of the first road paver provided on the respective side. The extension position of the respective extension member can be determined based on an associated extension position sensor, for example, a distance sensor attached to the screed, or based on a setting value for the respective screed extension position that is present in the first control device. A position of the respective screed outer edge of the first road paver can be determined from the extension position, in particular in combination with the positions of the two position measuring points provided in a stationary manner on the chassis of the first road paver.
The second pavement layer can be paved with the first road paver, i.e., with the same road paver with which the first pavement layer was paved. Alternatively, the second pavement layer can be paved with a second road paver. The second road paver can be a different road paver than the first road paver. If the second pavement layer is paved with the second road paver, then the paving data can be transferred to the second road paver with or without prior processing. The paving data can be transferred to the second road paver directly or indirectly, for example, by way of a storage medium or by way of a data connection. The paving data can be transferred to the second road paver, for example, wirelessly.
The second pavement layer can be paved after paving of the first pavement layer has been completed. The second pavement layer is paved after a paving run of the first road paver for paving the first pavement layer has been completed.
If the second pavement layer is paved with the second road paver, then the second pavement layer can optionally be paved at least in part at the same time as the first pavement layer is paved. The second road paver can travel behind the first road paver, that is paving the first pavement layer, and pave the second pavement layer. A spacing along a paving travel direction between the first road paver and the second road paver can be, for example, less than 100 m, or less than 50 m, or less than 25 m, or less than 15 m, or less than 10 m during a joint paving run. The second road paver can receive the paving data continuously or periodically, in particular directly or indirectly from the first road paver travelling in front of the second road paver while the second pavement layer is being paved. The second road paver can process the paving data while the second pavement layer is being paved.
The first road paver can comprise a towing vehicle and a screed attached to the towing vehicle. The towing vehicle can comprise a chassis. The screed can be configured as a screed for floating paving of a road surface. In the paving direction at the front, the first road paver can comprise a material hopper for receiving paving material. When paving a pavement layer, paving material can be conveyed backwards from the material hopper in a direction opposite to the paving travel direction and be deposited forward of the screed. The screed can smoothen and compact the paving material.
The screed of the first road paver can comprise a base screed and extension members provided on both sides of the base screed, in particular an extension member on the left side as seen in the paving travel direction and an extension member on the right side as seen in the paving travel direction. The extension members can be extended and retracted laterally along a transverse direction that is perpendicular to the paving travel direction in order to vary a paving width. The extension position of an extension member can be changed using actuators provided at the screed. The extension positions of the extension members can be adjustable at least substantially steplessly. The extension members can each soften a limit plate that defines a screed outer edge on the respective side.
The second road paver can comprise a towing vehicle and a screed attached to the towing vehicle. The towing vehicle can comprise a chassis. The screed can be configured as a screed for floating paving of a road surface. In the paving travel direction at the front, the second road paver can comprise a material hopper for receiving paving material. When paving a pavement layer, paving material can be conveyed backwards from the material hopper in a direction opposite to the paving travel direction and deposited forward of the screed. The screed can smoothen and compact the paving material.
The screed of the second road paver can comprise a base screed and extension members provided on both sides of the base screed, in particular an extension member on the left side as seen in the paving travel direction and an extension member on the right side as seen in the paving travel direction. The extension members can be extended and retracted laterally along a transverse direction perpendicular to the paving travel direction in order to vary a paving width. The extension position of an extension member can be changed using actuators provided at the screed. The extension positions of the extension members can be adjustable at least substantially steplessly. The extension members can each comprise a limit plate that defines a screed outer edge on the respective side.
When the second pavement layer is paved, steering the first road paver or the second road paver can be controlled based on the paving data, in particular controlled in an automated manner. Steering the first road paver or the second road paver can be controlled based on one or more of the following when the second pavement layer is paved: a progression track traveled by a screed outer edge of the first road paver during paving of the first pavement layer; a progression track traveled by a left screed outer edge of the first road paver during paving of the first pavement layer; a progression track traveled by a right screed outer edge of the first road paver during paving of the first pavement layer; a progression track traveled by the reference point that is stationary relative to the chassis of the first road paver during paving of the first pavement layer; a progression track traveled by the theoretical turning point of the first road paver during paving of the first pavement layer; a course of an orientation of the first road paver during paving of the first pavement layer.
Based on the paving data, steering the first road paver or the second road paver when the second pavement layer is paved can be controlled such that the second road paver travels at least substantially the track that the first road paver travelled during paving of the first pavement layer.
When the second pavement layer is paved, the first road paver or the second road paver can be controlled based on the paving data such that it paves the second pavement layer in the same direction of travel as the first pavement layer was paved by the first road paver. When the second pavement layer is paved, the first road paver or the second road paver can be controlled based on the paving data such that it paves the second pavement layer in a paving travel direction that is opposite to the paving travel direction in which the first pavement layer was paved by the first road paver. Paving in the opposite direction can have the advantage that the road paver does not have to be driven back to the starting point for paving the second pavement layer. An operator can perform a selection in which paving travel direction the second pavement layer is to be paved (corresponding to or opposite to the paving travel direction that the first pavement layer was paved). The operator can select the paving travel direction by way of an operator input. The paving travel direction can be determined in an automated manner based on the positioning and/or orientation of the road paver that is paving the second pavement layer before starting to pave the second pavement layer, in particular by a control device of the road paver paving the second pavement layer.
The first road paver can be controlled based on the paving data to travel back on the paved first pavement layer to a starting point of the paving process of the first pavement layer, in particular to travel back in an automated manner.
When the second pavement layer is paved, a screed width setting of the first road paver or of the second road paver can be controlled based on the paving data, in particular be controlled in an automated manner. The screed width setting can comprise an extension position of a left extension member of the screed of the first road paver or of the second road paver and/or an extension position of a right extension member of the screed of the first road paver or of the second road paver. When the second pavement layer is paved, the first road paver or the second road paver can be controlled based on the paving data such that the screed outer edges of the first road paver or of the second road paver follow at least substantially the course of the screed outer edges of the first road paver when the first pavement layer was paved. When the second pavement layer is paved, the first road paver or the second road paver can be controlled based on the paving data such that the screed outer edges of the first road paver or of the second road paver run within boundaries which are offset inwardly relative to one another as compared to the course of the screed outer edges of the first road paver when the first pavement layer was paved. The second pavement layer can be paved at least somewhat narrower than the first pavement layer. By paving the second pavement layer narrower, it can be ensured that the second pavement layer is completely supported by the first pavement layer.
A track traveled by the screed outer edge of the second road paver can be a track of a point of the screed outer edge or a point at the screed outer edge. Preferably, the track traveled by the screed outer edge of the second road paver is a track of a rear end or a rear end point of the screed outer edge. The course of a rear end or a rear end point of the screed outer edge can represent a course of a lateral outer boundary of the second pavement layer.
When the second pavement layer is paved, a lateral inclination setting of a screed of the first road paver or of the second road paver can be controlled based on the paving data, in particular controlled in an automated manner. When the second pavement layer is paved, the lateral inclination setting of the screed of the first road paver or of the second road paver can be controlled based on the paving data such that a location-dependent course of the lateral inclination setting corresponds to a location-dependent course of the banking setting during paving of the first pavement layer.
From the paving data recorded, at least one progression track traveled by a screed outer edge of the first road paver during paving of the first pavement layer can be determined and used with or without prior processing as a target track for a screed outer edge of the first road paver or of the second road paver when the second pavement layer is paved. Prior processing can comprise smoothening and/or shifting the determined progression track of the screed outer edge of the first road paver.
From the recorded paving data, in particular a progression track traveled by a left screed edge of the first road paver during paving of the first pavement layer can be determined and used with or without prior processing when the second pavement layer is paved as a target track for a screed outer edge of the first road paver or of the second road paver. From the paving recorded data, in particular, a progression track traveled by a right screed outer edge of the first road paver during paving of the first pavement layer can be determined and used with or without prior processing when the second pavement layer is paved as a target track for a screed outer edge of the first road paver or of the second road paver.
For example, processing can comprise shifting a progression track of a screed outer edge or shifting the progression tracks of both screed outer edges to the respective other progression track. In this way, a paving width for the second pavement layer can be reduced, which can in particular ensure that the second pavement layer is sufficiently supported by the first pavement layer.
From the recorded paving data, a progression track of a reference point that is stationary relative to a chassis of the first road paver, in particular a theoretical turning point of the first road paver, traveled during paving of the first pavement layer can be determined and used with or without prior processing when the second pavement layer is paved as a target track for a reference point that is stationary relative to a chassis of the first road paver or of the second road paver. Prior processing can comprise smoothening and/or shifting the progression track determined.
Shifting a progression track, in particular shifting a progression track of a screed outer edge or shifting a progression track of the reference point that is stationary relative to the chassis of the first road paver, can comprise that the progression track is shifted as a whole, quasi as a rigid object, by a specific vector. Alternatively, shifting a progression track, in particular shifting a progression track of a screed outer edge or shifting a progression track of the reference point that is stationary relative to the chassis of the first road paver, can comprise that each point of the progression track is shifted orthogonally to the original curve profile, so that the radii also change when a curved track is shifted.
Shifting a progression track can comprise that the entire progression track is shifted, or that only one or more partial regions of the progression track are shifted, or that different regions of the progression track are shifted differently.
Data reduction, i.e., a reduction of data points or support points of the progression track can take place prior to smoothening a progression track, in particular prior to smoothening a progression track of a screed outer edge or prior to smoothening a progression track of the reference point that is stationary relative to the chassis of the first road paver.
From the recorded paving data, at least a progression track traveled by a screed outer edge of the first road paver during paving of the first pavement layer can be determined and be shown on a display. In particular, from the recorded paving data, a progression track traveled by a left screed outer edge of the first road paver during paving of the first pavement layer and a progression track traveled by a right screed outer edge of the first road paver during paving of the first pavement layer can be determined and be shown on a display.
From the recorded paving data, a progression track traveled by a reference point that is stationary relative to a chassis of the first road paver, in particular a theoretical turning point of the first road paver, during paving of the first pavement layer can be determined and be displayed on a display.
Progression tracks shown on the display can be displayed together with a map or together with an aerial photograph.
The display can be present or attached to the first road paver or to the second road paver or to an external device.
The disclosure shall be further explained hereafter on the basis of embodiments with reference to the figures.
In paving direction 15 at the front, road paver 1 comprises a material hopper 17 for receiving paving material. When a pavement layer is paved, paving material is conveyed backwards from material hopper 17 under control station 7 in a direction opposite to paving direction 15 and deposited forward of screed 5. Screed 5 smoothens and compacts the paving material. For this purpose, screed 5 can comprise, for example, smoothening plates and compacting devices. The compacting devices can comprise, for example, vibration elements or tamping elements.
Since the position of position measuring points 19 relative to one another and relative to road paver 1, in particular relative to a chassis of road paver 1, is known, an orientation of road paver 1 in space can also be determined based on the determined positions of position measuring points 19. The orientation of road paver 1 can be specified, for example, in the form of an angle which, in a top view onto road paver 1, exists between current paving travel direction 15 and a certain cardinal direction, for example, a north-south direction.
Screed 5 of road paver 1 comprises a base screed 23 and extension members provided on both sides of base screed 23, in particular an extension member 25 on the left side as seen in paving direction 15 and an extension member 27 on the right side as seen in paving direction 15. Extension members 25, 27 can be extended and retracted laterally along a transverse direction 29 perpendicular to paving direction 15 in order to vary a paving width. The extension position of an extension member 25, 27 can be changed by way of actuators provided on screed 5. The extension positions of extension members 25, 27 can be adjustable continuously at least substantially.
A lateral inclination angle of screed 5 can be changed by way of one or more further actuators. The lateral inclination angle of screed 5 indicates an angle by which screed 5 is inclined along transverse direction 29 with respect to the horizontal plane when road paver 1 is positioned on a horizontal surface. By changing the lateral inclination angle of screed 5, a pavement layer having a lateral inclination can be paved.
In the embodiment shown, a screed position measuring point 35 is provided at a rear end of screed outer edges 31. Screed position measuring points 35 can each comprise, for example, a GNSS receiver, in particular a GPS receiver, which allows for direct measurement of an absolute position of respective screed position measuring point 35. Alternatively, the positions of the rear ends of screed outer edges 31, 33 could be determined, for example, by relating a current extension position of respective extension member 25, 27 of screed 5 to the determined positions of position measuring points 19 or to values derived therefrom. The current value of the extension position of an extension member 25, 27 of screed 5 can be determined, for example, from setting values for the extension position or determined using a screed width sensor.
The disclosure relates to paving a multi-layer road surface. First, a first pavement layer is paved along a roadway. At a later point in time, a second pavement layer is paved along the roadway over the first pavement layer. The second pavement layer can be paved directly on the first pavement layer or there can be one or more intermediate layers present between the first pavement layer and the second pavement layer.
The first pavement layer is paved using a first road paver 1 which can have the configuration shown in
When paving the first pavement layer, road paver 1 is controlled manually at least in part. When paving the first pavement layer, for example, a steering of road paver 1, a screed width control of road paver 1 and a lateral inclination adjustment of screed 5 of road paver 1 can be controlled manually. The screed width control can comprise setting an extension position of left extension member 25 and setting an extension position of right extension member 27 of screed 5.
When the first pavement layer is paved, paving data is recorded by control device 13 of road paver 1. The paving data comprises a progression track 41 traveled by reference point 21 of road paver 1 or allow a progression track 41 traveled by reference point 21 of road paver 1 to be determined. The paving data comprises a progression track 43 traveled by left screed outer edge 31 of road paver 1 during paving of the first pavement layer or allow a progression track 43 traveled by left screed outer edge 31 of road paver 1 during paving of the first pavement layer to be determined. The paving data comprises a progression track 45 traveled by right screed outer edge 33 of road paver 1 during paving of the first pavement layer or allow a progression track 45 traveled by right screed outer edge 31 of road paver 1 during paving of the first pavement layer to be determined.
Progression track 41 of reference point 21 can be determined based on position determination of position measuring points 19. Progression tracks 43, 45 of screed outer edges 31, 33 can be determined based on position determination of screed position measuring points 35.
Progression tracks 41, 43, 45 can already be determined while the first pavement layer is being paved, in particular by control device 13, and saved as progression tracks 41, 43, 45. While the first pavement layer is being paved, only data which allows progression track 41, 43, 45 to be determined later can alternatively be stored, in particular stored by control device 13. The data can comprise position determination of position measuring points 19 and position determination of screed position measuring points 35.
Progression tracks 41, 43, 45 can be shown on display 11.
Progression tracks 41, 43, 45 recorded when the first pavement layer was paved, or the paving data recorded when the first pavement layer was paved, which allow progression tracks 41, 43, 45 to be determined, are used to control road paver 1 when the second pavement layer is paved. In particular, road paver 1 is controlled in an automated manner at least in part based on the recorded paving data when the second pavement layer is paved.
The steering of road paver 1 and/or the extension positions of extension members 25, 27 can be controlled manually based on the paving data when the second pavement layer is paved. For this purpose, an operator can be shown a representation of progression tracks 41, 43, 45 together with a model of road paver 1 on display 11. Based on this display, the operator can control road paver 1 based on the paving data to pave the second pavement layer. In an embodiment automated at least in part, at least controlling the steering of road paver 1 and/or controlling the extension positions of extension members 27, 29 of screed 5 of road paver 1 is carried out in an automated manner by control device 13 of road paver 1 based on the paving data.
Before the paving data or progression tracks 41, 43, 45 defined by the paving data is/are used to control road paver 1 when the second pavement layer is paved, the paving data or the progression tracks 41, 43, 45 can be processed. Such processing can include smoothening progression tracks 41, 43, 45. Additionally or alternatively, processing can comprise shifting one or more of progression tracks 41, 43, 45. Processing can be carried out directly on road paver 1, in particular with the aid of control device 13 of road paver 1. The paving data or progression tracks 41, 43, 45 can be processed based on user input. For example, a user can define a smoothening algorithm to be used and/or define a desired shift of one or more of progression tracks 41, 43, 45.
Further data can be recorded when paving the first pavement layer and used, in particular, for the automated control of road paver 1, when the second pavement layer is paved. For example, a location-dependent course of a lateral inclination setting of screed 5 of road paver 1 can be recorded when the first pavement layer is paved. In particular, an associated value for the lateral inclination setting can be recorded for each measuring point of progression track 41 of reference point 21. When the second pavement layer is paved, control device 13 can control a lateral inclination setting of road paver 1 based on the paving data according to a course of the lateral inclination setting when the first pavement layer was paved.
As one skilled in the art would understand, the control panel 9, display 11, control device 13, measuring points 19, 35, as well as any other controller, unit, system, subsystem, interface, component, sensor (e.g., position sensor, screed width sensor, etc.), device, or the like described herein may individually, collectively, or in any combination comprise appropriate circuitry, such as one or more appropriately programmed processors (e.g. one or more microprocessors including central processing units (CPU)) and associated memory, which may include stored operating system software and/or application software executable by the processor(s) for controlling operation thereof and/or for performing the particular algorithms represented by the various functions and/or operations described herein, including interaction and/or cooperation between any such control panel, display, control device, measuring points, controller, unit, system, subsystem, interface, component, sensor, device, or the like. One or more of such processors, as well as other circuitry and/or hardware, may be included in a single ASIC (Application-Specific Integrated Circuitry), or several processors and various circuitry and/or hardware may be distributed among several separate components, whether individually packaged or assembled into a SoC (System-on-a-Chip).
| Number | Date | Country | Kind |
|---|---|---|---|
| 23192606.4 | Aug 2023 | EP | regional |
