A compactor system for compacting a work material includes a roller drum, a vibratory mechanism, and a controller. The roller drum is configured to compact a work material. The vibratory mechanism is coupled to the roller drum and operatively coupled to the controller. The controller is configured to determine a vibration effort based on a vibration parameter, and further configured to generate an output signal to control the vibratory mechanism to apply the vibration effort to the roller drum. The controller includes at least one sensor and a processor. The at least one sensor is configured to sense a first data parameter of the work material and a second data parameter of the roller drum. The processor is configured to calculate the vibration parameter based on the first data parameter and the second data parameter.

The disclosure relates to a road finishing machine comprising a paving screed for the production of a new road pavement layer of a paving material and a unit provided on the road finishing machine to generate a dynamic compacting specification field based on thermographic geosignals with regard to at least one temperature image that exists behind the paving screed of the road finishing machine for at least one surface section of the newly installed road pavement layer. An information indication unit provided on the road finishing machine is configured to display at last one compacting message that is at least partially based on the compacting specification field to an operator of at least one compacting vehicle that follows behind the road finishing machine for compacting of the newly installed road pavement layer.

A system and method for limiting a turning speed of a compactor is disclosed. The compactor includes a steering member configured to receive operator steering input. The system may comprise a speed sensor, and a controller in communication with the speed sensor. The speed sensor may be mounted on the compactor and configured to measure a travel speed of the compactor over a surface. In some embodiments, a temperature sensor, configured to measure a temperature of the surface, may be mounted on the compactor and in communication with the controller. The controller is configured to receive the travel speed and/or temperature, and to limit a turning speed of the compactor when a condition is satisfied.

A topping spreader machine for dispensing topping material onto a concrete surface includes a base unit and a topping spreading head assembly movably mounted at the base unit. The topping spreading head assembly includes (i) a bin that holds topping material, (ii) a distributing device that distributes the topping material along the length of the bin, (iii) a dispenser disposed along a lower portion of the bin for dispensing the topping material, and (iv) a sensor for sensing elevation of the topping spreading head assembly above the concrete surface. The topping spreading head assembly is positionable at a starting location and is movable over the concrete surface in a topping direction from the starting location to dispense the topping material onto the concrete surface, and a control system controls elevation actuators responsive to the sensor to maintain the height of the topping spreading head assembly above the concrete surface.

A method, apparatus and system for providing an estimate of the level of compaction of a layer of pavement materials in real time. In some embodiments, a Retrofit Intelligent Compaction Analyzer (RICA) processor of a RICA device receives vibrational energy data from a sensor module which corresponds to impact responses of a drum of a roller machine during compaction of a pavement material over a section of pavement. The RICA processor also receives temperature data from the sensor module, determines an estimated level of compaction in real time of the section of pavement based on the vibrational energy data, pavement material characteristics data and the temperature data, and displays a density level percentage of the section of pavement on a display device for viewing by an operator of the roller machine.

In some implementations, a soil compaction measurement controller may measure a soil resistivity during a soil compaction process. The soil compaction measurement controller may query a lookup table that associates the soil resistivity to an estimated density and moisture content. The soil compaction measurement controller may output, to a component of a machine, a control signal to control an operation of the machine, during the soil compaction process, in accordance with the estimated density and moisture content.

A method for assisted operating support for a ground compaction machine, comprising the steps of: controlling the ground compaction machine by an operator; detecting at least one of the parameters travel speed, change in travel speed and/or reversal of direction of travel, or at least one variable correlating with one of said parameters; determining a time at which a reversal of the ground compaction machine takes place from the at least one parameter or the at least one variable detected in step b); detecting a steering angle of the ground compaction machine and/or a vibration input of a vibration exciter into the ground, or a variable correlating with the steering angle or with the vibration input, within a time interval and/or a distance around the time determined in step c) and/or around a location of the ground compaction machine at this time; comparing the steering angle and/or vibration input within the interval and/or the distance as detected in step d) with predetermined reference values for a target steering angle and/or a target vibration input; outputting and/or storing a result of the comparison.

A system for determining a state of compaction of a work material during a compaction operation includes: a roller associated with a machine for engaging and compacting the work material; a power loss sensor for generating power loss signals indicative of a power loss of the machine; a speed sensor for generating speed signals indicative of a speed of the machine; at least one deflectable tire associated with the machine for engaging the work material, the at least one deflectable tire having tire characteristic data associated therewith; a tire pressure sensor for generating tire pressure signals indicative of a tire pressure of the at least one deflectable tire; and a controller that: receives the power loss signals from the power loss sensor, receives the speed signals from the speed sensor, and receives at least one of the tire pressure signals from the tire pressure sensor and the tire characteristic data.

A system for determining a state of compaction of a work material during a compaction operation: a roller associated with a machine for engaging and compacting the work material; a power loss sensor for generating power loss signals indicative of a power loss of the machine; a speed sensor for generating speed signals indicative of a speed of the machine; and a controller that: receives an actual drive power target value, receives the power loss signals from the power loss sensor, receives the speed signals from the speed sensor, determines a gross power of the machine based on the power loss signals, determines a friction loss power of the machine based on the speed signals, and determines an actual drive power of the machine based on the gross power and the friction loss power, the actual drive power corresponding to the state of compaction of the work material.

A compaction measurement system is configured to measure the state of compaction of a work material by a rolling compactor. The compaction measurement system includes a powertrain sensor to measure the gross generated power produced by a powertrain of the rolling compactor and a temperature sensor to measure the temperature of a system associated with the rolling compactor. The compaction measurement system also includes an electronic controller that converts the system temperature to a temperature compensation factor and calculates an actual drive power applied during the compaction process from the temperature compensation factor and the gross generated power.