Abstract: A levelling system for a road construction machine, especially for a paving machine or a road milling machine, includes a first height sensor arrangement, a second height sensor arrangement, a first controller, a second controller and an additional sensor. The first controller includes a first controller loop configured to control a height position of the first side of the tool or of the first side of the machine chassis based on the first actual value and a first setpoint. The second controller includes a second controller loop configured to control a height position of the second side of the tool or of the second side of the machine chassis based on the second actual value and a second setpoint. The first and/or the second controller are configured to adapt the setpoint based on the actual reference value, wherein a setpoint adaption takes place only either on the first side or on the second side of the tool or of the machine.

Abstract: Method for detecting a quality of paving material distributed along a paving area using a paver, including: receiving a first thermal profile of a portion of the paving area where the paving material is distributed, the first thermal profile having a plurality of temperature values assigned to respective measurement points; the portion including a first subportion; analyzing the first thermal profile to detect segregated spots of paving material within the portion enabling to determine a quality of the paving material, including: determining a first zone of the measuring points arranged adjacent to each other and having temperature values within a predetermined range, the first zone corresponding to the first subportion and being at least partially surrounded by measurement points having temperature values out of the predetermined range; determining a first analysis parameter for the first zone; and determining a first quality parameter for the subportion to assign the first quality parameter to the first ana

Abstract: A measurement system for a construction machine, in particular a road construction machine including a temperature measuring device and an evaluation device. The temperature measuring device is configured to determine a first surface temperature for a first area of a measuring field as well as a second surface temperature for a second area of the measuring field, the temperature measuring device being directed to a reference surface, in relation to which the construction machine is moving, and the measuring field being shifted as a function of a movement of the construction machine along the reference surface. The evaluation device is configured to determine a movement parameter by means of a shift in a first temperature zone, defined for a first point in time by the first surface temperature within the first area, in relation to the first and/or second area(s) or in relation to the measuring field.

Abstract: 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

Abstract: Distance measurement system for a vehicle, wherein the distance measurement system includes a measurement unit for non-contact determination of a distance to an object and the measurement unit includes: a sensor unit configured to emit a signal and to receive a signal reflected by the object; an evaluation unit determining a distance between the measurement unit and the object from the signals emitted and received by the sensor unit; and a signal deflection apparatus arranged in the area of the sensor unit with a reflector surface deflecting the signal emitted by the sensor unit in a direction deviating from the propagation direction of the signal, in particular at an essentially right angle to the propagation direction of the signal, in the direction of the object.

Abstract: A sensor system for a construction machine, in particular a road finishing machine, includes a laser scanner and an evaluation unit. The laser scanner can be arranged on the construction machine or the road finishing machine itself and is configured to search a specified angular range for objects and to determine angles of the specified angular range according to distance values describing the distance to the one or several objects together with corresponding intensity values describing an intensity of a reflection resulting at the one or several objects. The evaluation unit is configured to detect an object as a reference together with corresponding angles based on a known pattern including the distance values and the intensity values across the angles. Further, the evaluation unit is configured to determine a distance to the reference and/or an angle with respect to the reference.

Abstract: A crane mechanism and a work platform with a load detection apparatus and integrated inclination sensor includes a load cell. The crane mechanism for moving the work platform can be mounted on a base and includes a tiltable boom. The load cell is arranged between the tiltable boom and the work platform as only connection and includes a force sensor and an inclination sensor. The force sensor is configured to detect a force, a lateral or yaw or torsional moment between the crane mechanism and the work platform. The inclination sensor is configured to determine an inclination of the work platform. The force sensor and the inclination sensor have a common housing.

Abstract: An electrical full bridge strain gauge circuit, load cell, and load detection device for use in lifting platforms such as forklifts, loaders, cranes, and trucks, wherein the detection of the weight of a given load is desirable. The circuit includes a full bridge strain gauge configuration having a pair of voltage supply terminals and a pair of signal terminals, first resistors connected in series between the supply terminals and having a first tap between two resistors, and second resistors connected in series between the signal terminals and having a second tap between two resistors. A comparer has input terminals connected to the first and the second taps, for comparing a first voltage potential at the first tap with a second voltage potential at the second tap, and for producing a corresponding drift signal.

Abstract: A temperature measuring device includes a temperature sensor, arranged within a holder, for determining the temperature of a building material located within a skip of a transport vehicle, the skip including an inner wall and an outer wall, and the holder being arranged on that side of the inner skip wall that faces the outer skip wall. The holder is arranged within a recess within the inner skip wall such that it is thermally insulated from the inner skip wall. The holder is arranged within the recess such that a region, which faces the interior of the skip, of the holder is exposed.

Abstract: An electrical circuit includes an SG full bridge circuit, a first resistor series connection connected between the terminals of an energy supply gate of the SG full bridge circuit and having a first tap between two resistors, and a second resistor series connection connected between the terminals of a signal gate of the SG full bridge circuit and having a second tap between two resistors.

Abstract: A device for determining the position of a road roller relative to a road finisher has a transceiver on the road roller for transmitting transmit signals and for receiving receive signals from at least two reference points on the road finisher spaced apart from each other. An evaluation unit determines the position of the road roller relative to the road finisher from the run time between transmitting the transmit signals and receiving the receive signals from the reference points.

Abstract: A device for detecting the temperature of an asphalt material to be processed by a road finishing machine includes at least one temperature measuring head, the at least one temperature measuring head being integrated into an ultrasonic sensor for detecting the filling level of the asphalt material.

Abstract: An apparatus for determining an elevation of a working tool relative to a reference plane, includes a rotary laser system, a radio unit and a detector. The rotary laser system emits a rotating laser beam in a plane inclined relative to the reference plane. The radio unit is configured to measure a distance between the working tool and the rotary laser system and the detector is mounted on the working tool for detecting the laser beam. The elevation of the working tool can be determined on a basis of the inclination angle and the distance between the working tool and the rotary laser system.