A method for determining the thickness of the paved layer paved by a road paver by a self-propelled road roller, comprising the steps: establishing a height reference, creating a height profile of the surface to be paved, paving the paved layer, measuring the elevation of a height reference sensor of a self-propelled road roller in relation to the height reference, measuring the position of the height reference sensor in relation to the ground, ascertaining a height profile of the paved surface area, and ascertaining the thickness of the paved layer from the two height profiles. The invention further relates to a self-propelled road roller for carrying out the method and a corresponding roller system.

An autonomous stability control system may include a sensing system configured to collect position and orientation data about a work machine on a construction site and a controller. The controller may be configured to receive or generate a work path plan, operate the work machine according to the work path plan, continually or periodically monitor the orientation data from the sensing system, compare the orientation data to a vibration slope threshold, and, when the orientation data exceeds the vibration slope threshold, deactivate a vibration system of the work machine.

Systems, methods, and apparatuses can determine weight of a machine using rolling resistance. The machine may be electrified, either all-electrically powered or partially electrically powered. The rolling resistance can be determined based on motor signaling from one or more motor sensors that sense motor characteristics (e.g., drawn current) from one or more electric motors that drive the machine. The weight of the machine can be determined using the determined rolling resistance. Weight information can be output for display on a display and/or for storing in computer-readable storage onboard and/or offboard the machine.

A device for ground compaction, comprising a frame and a drive motor supported by the frame, a vibration exciter driven by the drive motor and a ground compaction apparatus, in particular a base plate or a roller drum, that is connected to the vibration exciter, wherein the vibration exciter causes the ground compaction apparatus to vibrate at a fixed vibration frequency or within a vibration frequency range during a compaction operation, and wherein a conversion device for the conversion of vibrations into electric energy is provided which converts vibrations of the device for ground compaction into electric energy, wherein the conversion device comprises two spring-mass systems with different resonance frequencies, and wherein a control unit is provided which determines the degree of compaction of the ground from the electric energy obtained by the individual spring-mass systems, in particular the respective voltages. Moreover, the invention relates to a method for monitoring changes in the ground compaction produced with a device for ground compaction.

The present invention relates to a method for monitoring the compaction process of an asphalt layer to be compacted in road construction, comprising the steps: detecting the edges limiting the hot asphalt layer transversely to the road pathway by means of a temperature sensor arranged on a road roller compacting the asphalt layer, and dividing the detected asphalt layer into at least two width segments across the road pathway, wherein the position of the road roller on the asphalt layer transversely to the road pathway is determined from the measurement of the temperature sensor and is assigned to one of the width segments, the working operation of the road roller on the width segment is quantified by means of an operating parameter and stored, and the quantified working operation for each width segment is displayed to the operator for at least one past working interval. The present invention further relates to a road roller for carrying out the method.

A compacting machine includes a frame supporting a compacting member and a monitoring system. The monitoring system includes a sensor, a computer-readable medium bearing a compacting member monitoring program, a controller, and an interface device in communication with the controller. The sensor is arranged with the compacting member to sense a parameter of its ground-engaging surface and to generate a surface parameter signal indicative of the parameter. The controller is in communication with the sensor to receive the surface parameter signal therefrom and is configured to execute the compacting member monitoring program. The compacting member monitoring program is configured to determine whether a piece of the material being compacted becomes adhered to the ground-engaging surface based upon the surface parameter signal satisfying a condition and to produce, through the interface device, an indicator alerting the operator once the surface parameter signal satisfies the condition.

The present invention proposes a ground compactor with a ground compaction drum rotating about a rotation axis during compaction of a substrate, wherein the ground compaction drum includes a deformation sensor for detection of an elastic deformation of the ground compaction drum in order to determine a degree of stiffness of the substrate.

A system for compaction measurement includes a first compaction measurement apparatus arrangeable on a compaction machine and configured to determine, on the basis of a measured acceleration of a measurement probe of the first compaction measurement apparatus as a result of a measurement vibration and/or an acceleration of a compaction element of the compaction machine, at least one first stationary compaction value that informs about a local compaction of the subsoil or the surfacing for at least a first position, and to output the same with associated positional information for the first position; a second compaction measurement apparatus being mobile and configured to identify, upon interaction or contact with the subsoil or the surface, the local compaction of the subsoil or the surfacing for at least the first position and to output, on the basis thereof, at least one first mobile compaction value with associated positional information for the first position; and a calculation unit configured to compare the first stationary compaction value and the first mobile compaction value so as to determine a correction value that depends on the deviation of the first stationary compaction value from the first mobile compaction value, or to determine and display a deviation.

A method for operating a compactor on a compressible surface includes: moving the compactor on the compressible surface; receiving an operating speed of the compactor; determining whether an obstacle is present in a path of the compactor; and changing the operating speed to a creep speed if the obstacle is in the path of the compactor. The creep speed is sufficient to prevent the compactor from forming dips in the compressible surface.

TABLE-US-00001 ELEMENT NUMBER DESCRIPTION 100 compactor 102 cab 103 drive system 104 drums 105 surface 106 temperature sensor 107 path 108 speed sensor 110 controller 112 GPS device 114 perception system 115 control lever 120 processor 122 memory 124 data bus 126 user interface 128 communications interface 129 autonomous path planning system 130 remote system 132 work area 134 operating system (OS) 136 utilities 138 creep routine 140 sensor interfaces 144 control logic module 146 settings module

A compactor gathers GPS, orientation and wheel slip data to identify the location of a soft spot in a surface that is being compacted and to isolate the soft spot to a particular side of the compactor if the wheel slip data indicates that the soft spot is located beneath only one of the compactor wheels. The GPS, orientation and wheel slip data are displayed as location information to an operator and/or sent to a remote location to facilitate the fast and accurate repair of the soft spot.