公开(公告)号：US11493341B2

公开(公告)日：2022-11-08

申请号：US16894768

申请日：2020-06-06

Applicant: LEICA GEOSYSTEMS AG

Inventor： Josef Müller ,  Christoph Herbst ,  Lukasz Kucharczyk ,  Christian Niklaus ,  Markus Geser

IPC: G01C15/00 ,  G01S17/08 ,  G01S7/481

Abstract: 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.

公开(公告)号：US10222476B2

公开(公告)日：2019-03-05

申请号：US15147889

申请日：2016-05-05

Applicant: LEICA GEOSYSTEMS AG

Inventor： Christoph Herbst ,  Patrick Spettel

IPC: G01S17/42 ,  G01C15/00 ,  G01S7/481 ,  G01S17/89 ,  G01S7/48

Abstract: 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.

公开(公告)号：US12018942B2

公开(公告)日：2024-06-25

申请号：US16998958

申请日：2020-08-20

Applicant: LEICA GEOSYSTEMS AG

Inventor： Benjamin Müller ,  Thomas Lienhard Schmitt ,  Christoph Herbst ,  Hannes Martin Wachter

IPC: G01C15/00 ,  B25B21/00 ,  B25F5/00 ,  G01C1/02

CPC classification number: G01C15/002 ,  B25B21/00 ,  B25F5/001 ,  G01C1/02

Abstract: 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.

公开(公告)号：US11315267B2

公开(公告)日：2022-04-26

申请号：US15796677

申请日：2017-10-27

Applicant: LEICA GEOSYSTEMS AG

Inventor： Christoph Herbst

IPC: G06T7/521 ,  G06T5/00 ,  G06T15/00 ,  G09G3/00 ,  G01B9/02 ,  G01C15/00 ,  G06T9/00 ,  G01S7/51 ,  G01S7/48 ,  G01S17/42 ,  G01B11/24 ,  G01S17/08 ,  G01S17/89

Abstract: 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.

公开(公告)号：US11212463B2

公开(公告)日：2021-12-28

申请号：US15795705

申请日：2017-10-27

Applicant: LEICA GEOSYSTEMS AG

Inventor： Christoph Herbst

IPC: H04N5/272 ,  G06T15/00 ,  G01C15/00 ,  G01C11/00 ,  H04N5/232

Abstract: 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.

公开(公告)号：US10260873B2

公开(公告)日：2019-04-16

申请号：US14963011

申请日：2015-12-08

Applicant: LEICA GEOSYSTEMS AG

Inventor： Oliver Faix ,  Christoph Herbst ,  Daniel Auer ,  Josef Müller

IPC: G01C1/02 ,  G01C3/08 ,  H02K1/27 ,  G01C15/00 ,  G01S17/42 ,  G01S7/481 ,  H02K21/24 ,  H02K29/10 ,  H02K5/167

Abstract: 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.