Leica Geosystems Ag

Christoph Herbst

Josef Müller

Bernhard Metzler

Heinz Bernhard

Benjamin Müller

Markus Geser

Oliver Faix

Anton Häle

Lukasz Kucharczyk

Christian Niklaus

Anton Haele

Daniel Auer

Josef Mueller

Thomas Lienhard Schmitt

Patrick Spettel

Hannes Martin Wachter

Benjamin MÜLLER

Anton HÄLE

The present disclosure relates to a scanning device being configured to enable efficient identification of scanned measurement points being associated with moving objects in an otherwise static environment. The scanning device is built as total station or laser scanner being typically used for scanning an environment and enabling, based on the scanning, the generation of a three dimensional (3D) point cloud representing the scanned environment.

Scanning device for scanning an environment and enabling an identification of scanned moving objects

A geodetic surveying instrument to move a measurement light beam into a desired measurement direction in space, comprising at least one movement axis which is motorized, providing a positioning of the measurement direction of the geodetic surveying instrument, and an instrument-encoder at the movement axis configured for deriving the measurement direction as a measurement value of the geodetic surveying instrument. The geodetic surveying instrument comprises a transmission link of the movement axis of the geodetic surveying instrument to a motor axis of a stepper motor, which transmission link is configured with a gear reduction and a slipping clutch arrangement, and wherein the stepper motor comprises a rotational motor-encoder on its motor-axis and is driven by a motor controller that provides a field oriented control of phase currents of the stepper motor, which field orientation is derived based on the rotational motor-encoder.

Drive system in a geodetic measurement instrument

An industrial or geodetic surveying device with a scan functionality including an alidade rotating about a standing axis and a telescope unit with a beam exit for a laser measuring beam. The telescope unit is mounted on the alidade and is movable in a tilting motion about an elevation axis substantially orthogonal to the standing axis. The scan functionality comprises a scan sequence with an angular velocity of the alidade around the standing axis, wherein during the scan sequence the alidade is in a continuous revolving motion with mainly constant angular velocity about the standing axis, and the angular velocity of the alidade is faster than half of the angular velocity of the tilting motion of the telescope unit about the elevation axis.

Scanning surveying device

A method for processing scan data which are recorded by a measuring device with a scan functionality, wherein a reduced scan data record is created from a recorded scan data record with a first scan data density by selecting individual scan data points. Here, the selection represents an adaptation to a reduced scan data density, which is less than the first scan data density of the recorded scan data record. The reduced scan data density depends on a predetermined display resolution for displaying scan data. The reduced scan data record is transmitted to an external data processing device and displayed by the latter by means of a display, depending on the predetermined display resolution.

Method for processing scan data

Method for visually representing scanning data, which are composed of a multiplicity of individual measurement data. The individual measurement data in each case have at least one measurement value that is linked to a respective measurement direction, wherein the measurement directions are different from one another such that a predetermined scanning region with a predetermined scanning resolution is covered. The representation of the scanning data is effected by way of an image map with a number of map points that is dependent on a predetermined display resolution and by way of an assignment rule for assigning measurement value to map point, wherein the assignment is effected immediately on the basis of the respective measurement direction that is linked to the measurement value.

Method for visually representing scanning data

Some embodiments of the invention include a surveying apparatus that includes an optoelectronic distance measuring device having a measuring beam path, a base for placing the surveying apparatus, a support which is mounted on the base such that it is rotatable about a vertical axis, a beam directing unit which is mounted in the support such that it is rotatable about a tilting axis, an angle measurement system for measuring the axial positions, and an actuatable positioning device driving the beam directing unit or the support. In some embodiments the positioning device may include a plurality of coils which are arranged in a positionally fixed manner in the form of a ring about the tilting axis and/or vertical axis, with winding axes which are axially parallel to the tilting axis or vertical axis.

Surveying apparatus with positioning device

In some embodiments a scanning method for deriving information about surfaces of objects for a surveying system is disclosed. In some embodiments, the surveying system may include a control and evaluation unit with scanning functionality, such as, for example, a laser scanner or a total station. In some embodiments, the recorded point set of the detected object points is kept available in a volatile memory of the control and evaluation unit and by means of the control and evaluation unit as part of the scanning process an adaptation of the recorded point set is effected depending on at least one point density of the recorded point set. The adapted point set generated thereby, with loss of the recorded point set, is stored in a permanent memory.

Scanning method and surveying system with scanning functionality

In a geodesic measuring instrument with a fixing device for positioning the measuring instrument and with a measuring component having an optical beam path for surveying a target, whereby the measuring components are mounted in an aligning component that can be moved relative to the fixing device, and can be moved relative to the aligning component, an optical beam path is modified by at least one piezoelectric micromotor.

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Dornbirn, Austria

Christoph Herbst