An apparatus and a method for rolling weight deflection measurement comprising a rolling wheel to be moved along a measuring surface in a first direction. The apparatus comprises a number of spaced apart range sensors arranged on at least one carrier and configured to measure a distance to said measuring surface at pavement locations passed by the apparatus. A first of said range sensors is arranged at a predetermined location with respect to said rolling wheel, and the remainder of the range sensors are arranged in spaced apart manner in line with said first range sensor in the in first direction. At least one inclination sensor is configured to measure at least a change in inclination of said at least one carrier, a curvature parameter value for said measuring surface is calculated using measurements from said range sensors and said inclination sensor.

The invention relates to a measuring system for a construction machine having a carrier including several portions, a measuring system for a construction machine including a calculation unit determining a regression line as well as a controller having two control loops.

The invention relates to a measuring system for a construction machine having a carrier including several portions, a measuring system for a construction machine including a calculation unit determining a regression line as well as a controller having two control loops.

When repairing a road, it is possible to easily conduct a survey on the road condition at the time of starting repair. The ortho-image creation method of the present invention includes a coordinate acquisition step to acquire three-dimensional coordinates of a plurality of survey markers 6, a photography step to photograph a plurality of photographed images of the plurality of survey markers 6 by a UAV 3 flying at an altitude of 20 meters or less above the ground in such a manner that each survey marker 6 is included in at least two of the photographed images, and an ortho-image creation step to create an ortho-image on the basis of the three-dimensional coordinates of each feature point acquired by the coordinate acquisition step and the plurality of photographed images photographed by the photography step.

Disclosed are a paver control system, a paver control method and a paver. The paver control system includes: an image acquisition device provided on the paver for acquiring image information of an execution device of the paver; a controller provided on the paver and electrically connected with the image acquisition device and the execution device for controlling the execution device to operate according to the image information acquired by the image acquisition device; and the execution device is provided on the paver for operating under a control of the controller. The execution device includes at least one of a driving mechanism, a prompting device and a material distributing device.

Disclosed are a paver control system, a paver control method and a paver. The paver control system includes: an image acquisition device provided on the paver for acquiring image information of an execution device of the paver; a controller provided on the paver and electrically connected with the image acquisition device and the execution device for controlling the execution device to operate according to the image information acquired by the image acquisition device; and the execution device is provided on the paver for operating under a control of the controller. The execution device includes at least one of a driving mechanism, a prompting device and a material distributing device.

A paver, in particular a slipform paver, has a machine frame supported by front and rear undercarriages and a paving device for the paving of material. The paver is provided with an apron monitoring device for generating elevation profile data or elevation profile signals describing the elevation profile of the material deposited in the apron of the paving device in a direction transverse to the working direction. A data or signal processing device receives the elevation profile data or signals. The apron monitoring device provides the data needed to allow the material to be spread more evenly across the working width of the paver during the feeding operation by means of a spreading device for spreading the material to be paved in a direction transverse to the working direction and/or to allow the spreading device to be controlled for improved spreading of the material after the paver has been fed.

A paver, in particular a slipform paver, has a machine frame supported by front and rear undercarriages and a paving device for the paving of material. The paver is provided with an apron monitoring device for generating elevation profile data or elevation profile signals describing the elevation profile of the material deposited in the apron of the paving device in a direction transverse to the working direction. A data or signal processing device receives the elevation profile data or signals. The apron monitoring device provides the data needed to allow the material to be spread more evenly across the working width of the paver during the feeding operation by means of a spreading device for spreading the material to be paved in a direction transverse to the working direction and/or to allow the spreading device to be controlled for improved spreading of the material after the paver has been fed.

An asphalt density estimation system includes a measurement device configured to output a measurement signal; a time synchronization unit configured to sample the measurement signal to obtain a sampled measurement signal and identify periodic sampling points of the sampled measurement signal across a plurality of periods. The system also includes a time synchronous averaging unit configured to construct a modified measurement signal in the time domain by: for at least one sampling point within the period, averaging a plurality of the periodic sampling points across periods to obtain an average periodic data point for the at least one sampling point, and constructing the modified measurement signal using the average periodic data point for the at least one sampling point. The system further includes a density calculation unit configured to determine asphalt density values based on the modified measurement signal; and a display unit configured to display the determined asphalt density values.

An asphalt density estimation system includes a measurement device configured to output a measurement signal; a time synchronization unit configured to sample the measurement signal to obtain a sampled measurement signal and identify periodic sampling points of the sampled measurement signal across a plurality of periods. The system also includes a time synchronous averaging unit configured to construct a modified measurement signal in the time domain by: for at least one sampling point within the period, averaging a plurality of the periodic sampling points across periods to obtain an average periodic data point for the at least one sampling point, and constructing the modified measurement signal using the average periodic data point for the at least one sampling point. The system further includes a density calculation unit configured to determine asphalt density values based on the modified measurement signal; and a display unit configured to display the determined asphalt density values.