In the method for operating a movable compaction device (10) during material compaction work the moisture content of the material to be compacted is monitored. The method comprises the steps of defining a compaction performance index for the material (100) to be compacted, said compaction performance index being an electromagnetic character correlating with the volumetric moisture content of the material, determining the compaction performance index value in a number of survey points of the material to be compacted during compaction work using electromagnetic measurement device and controlling the operation on the compaction device based on determined compaction performance index values. Determination of the compaction performance index includes sending at east one wideband electromagnetic pulse to the material to be compacted with a ground penetrating radar, receiving a reflected signal, measuring the power spectral density and peak to peak amplitude from the reflected signal and calculating the compaction performance index by using the measured density and amplitude.

A compaction system includes a first frame; a second frame coupled to the first frame via an articulated joint; a first propulsion device operatively coupled to the first frame via a first propulsion motor, the first propulsion device being configured to propel the compaction system over a work surface in response to a power applied by the first propulsion motor; a compaction drum operatively coupled to the second frame, the compaction drum being configured to compact the work surface via rolling engagement with the work surface; a force sensor configured and arranged to generate a signal that is indicative of a propulsion force transmitted through the articulated joint; and a controller operatively coupled to the force sensor. The controller is configured to determine compaction performance of the compaction system against the work surface based at least in part on the signal from the force sensor.

A vibratory compacting machine is described. The vibratory compacting machine may include an engine, a main frame supporting the engine, and a compacting element mounted on the main frame and driven by the engine. The vibratory compacting machine may further include a vibratory system housed within the compacting element and configured to rotate about a rotation axis to vibrate the compacting element. The vibratory compacting machine may further include a control system configured to control a direction of rotation of the vibratory system. The control system may reverse the direction of rotation of the vibratory system when a predetermined number of pass counts is reached or when a predetermined density of the compactable material is reached.

A system for compacting a work area is described. The system includes a compactor having a variable vibratory mechanism for providing a compaction effort to the work area. The system further includes a location sensor to generate a location data for the compactor. The system further includes a controller in communication with the location sensor and the variable vibratory mechanism. The controller is configured to determine a pass count for the work area based on the location data. The controller is further configured to determine a target compaction effort for the work area based on the pass count. The controller is further configured to modify the compaction effort to the target compaction effort.

The present disclosure relates to automated dynamic compaction systems. A system for dynamic compaction includes a compaction crane having a boom and compaction weight, at least one positional sensor, at least one boom deflection sensor, a rotational encoder, and a compaction control system. The compaction control system may be programmed to identify a first drop location having a first target parameter, determine whether the compaction crane is positioned over the first drop location, determine an initial elevation of the compaction weight, lift the compaction weight to a drop height, detect that the compaction weight has been released, re-hoist the compaction weight to the drop height, measure the payout length of a winch cable after each drop, determine a current elevation of the compaction weight after each drop, and determine whether the first target parameter has been satisfied.

A method for compacting soil by a soil compactor including at least one soil compacting device, and a soil compactor. The method includes generating an as-built model of compaction level covering at least a work order area to be compacted, determining boundaries for the work order area and determining location data for an area over which the at least one soil compacting device travels. Furthermore, it is generated an up-to-date travel path to be driven to cover the work order area by the at least one soil compacting device by using compactor operation for compacting soil and measurement function for measuring the compaction level of soil while compacting. The soil compactor is driven according to the up-to-date travel path and a location-specific as-built compaction level of soil and determined boundaries for the work order area are saved to the as-built model of compaction level.

Disclosed is a thermal-based automatic roller tracking and mapping system for roller path tracking and mapping in pavement compaction. Accuracy in estimation during roller position tracking and mapping for pavement compaction through the use of thermal imaging is achieved. The tracking and mapping system utilizes an infrared camera for automatic roller path tracking and mapping in pavement construction. The tracking and mapping data associated with the movement of the roller vehicle during compaction of the surface can be generated and visually represented in a user interface accessible to the operator of the roller vehicle. Based on the tracking and mapping data that is generated in real-time and presented to the operator in the user interface, the operator can make adjustments to the roller vehicle and path, as necessary.

A construction-vehicle autonomous travel control device to correct a steering angle so as to direct to a target point set on a target track includes: an expected arrival point calculator to calculate an expected arrival point of a vehicle to arrive after a predetermined time based on a vehicle speed and a steering angle; and a corrected steering angle calculator to calculate a corrected steering angle so as to direct the expected arrival point to the target point.

A compaction management system includes a position calculation unit that, when a bucket is pressed against a compaction target ground, calculates a position of the bucket, a rolling compaction force calculation unit that, when the bucket is pressed against the compaction target ground, calculates a rolling compaction force applied to the compaction target ground using the attitude of the machine body, the attitude of the attachment, a pressure of a cylinder, and dimensions of the attachment, a rolling compaction record creation unit that creates a rolling compaction record in which the position calculated by the position calculation unit is associated with the rolling compaction force calculated by the rolling compaction force calculation unit, and a storage control unit that causes a storage device to store the rolling compaction record created by the rolling compaction record creation unit.

A method for compacting asphalt material (A) by means of at least one soil compactor (10) having at least one compactor roller with a motion generation arrangement assigned to the same, comprising the measures: a) detection of an asphalt temperature of the asphalt material (A) to be compacted, b) static compaction of the asphalt material (A) with a deactivated motion generation arrangement of the at least one compactor roller, if the asphalt temperature lies above an upper threshold temperature (O), c) static compaction of the asphalt material (A) with a deactivated motion generation arrangement of the at least one compactor roller, if the asphalt temperature lies below a lower threshold temperature (U),
wherein the upper threshold temperature (O) and/or the lower threshold temperature (U) is/are set depending on at least one surroundings parameter (T) influencing the cooling behavior of the asphalt material to be compacted.