Patents Assigned to Trimble AB
  • Patent number: 9322652
    Abstract: A method for determining, in relation to a surveying instrument, target coordinates of a point of interest, or target, identified in two images captured by a camera in the surveying instrument. The method comprises determining coordinates of the surveying instrument, capturing a first image using the camera in the first camera position; identifying, in the first image, an object point associated with the target; measuring first image coordinates of the object point in the first image; rotating the surveying instrument around the horizontal axis and the vertical axis in order to position the camera in a second camera position; capturing a second image using the camera in the second camera position; identifying, in the second image, the object point identified in the first image; measuring second image coordinates of the object point in the second image; and determining the coordinates of the target in relation to the surveying instrument.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: April 26, 2016
    Assignee: Trimble AB
    Inventors: Nick Mein, Set Svanholm, Christian Graesser, Michael Vogel
  • Patent number: 9267796
    Abstract: An optical device is disclosed that may be employed in distance measuring devices. In at least one embodiment, the optical device includes a control unit that is adapted to cause at least one control signal generator unit to generate at least one control signal according to a predetermined temporal function on the basis of an elapsed time from a predetermined point in time. On the basis of the generated at least one control signal, at least one parameter of a receiver unit may be adjusted during the travel time of the optical pulse, wherein the at least one parameter affects the dynamic range of the receiver unit. In this way, the dynamic range of the receiver unit may be increased. A method is further disclosed for operating such an optical device, along with a distance measuring device including such an optical device and a surveying instrument including such a distance measuring device.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: February 23, 2016
    Assignee: Trimble AB
    Inventor: Yuri P. Gusev
  • Patent number: 9239232
    Abstract: A method for determining position and orientation of a first measuring instrument is disclosed. A second MI and at least one reflective target including a retroreflector unit are arranged in the vicinity of the first MI. At least one imaging module is arranged in the first MI for determining orientation thereof. The at least one imaging module in the first MI can be used in a similar manner as a tracker unit of an optical total station, by way of detecting optical radiation emitted from the second MI and reflected by the at least one TGT.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: January 19, 2016
    Assignee: Trimble AB
    Inventor: Johan Von Matern
  • Patent number: 9189858
    Abstract: A method is disclosed for determining coordinates of a target in relation to a surveying instrument wherein a first image is captured using a first camera in a first camera position and orientation, a target is selected by identifying at least one object point in the first image, and first image coordinates of the object point in the first image are measured. In at least one embodiment, a second image is captured using a second camera in a second camera position and orientation, the object point identified in the first image is identified in the second image, and second image coordinates of the object point in the second image are measured. Target coordinates of the target in relation to the rotation center of the surveying instrument are then determined based on the first camera position and orientation, the first image coordinates, the second camera position and orientation, the second image coordinates, and first and second camera calibration data.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: November 17, 2015
    Assignee: TRIMBLE AB
    Inventors: Set Svanholm, Michael Vogel, Christian Grässer
  • Patent number: 9157989
    Abstract: Methods and apparatus are presented for distance measurement using laser pulses in which at least one of an attenuation function and an offset of the attenuation function relative to the send pulse is variable to accommodate differing measurement needs. In some embodiments, at least one of an attenuation function and an offset of the attenuation function is fixed relative to the send pulse for some number of measurement cycles and information derived from the result is used to modify either or both of the attenuation function and offset of the attenuation function relative to the send pulse for subsequent measurement.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: October 13, 2015
    Assignee: TRIMBLE AB
    Inventor: Yuri P. Gusev
  • Patent number: 9160140
    Abstract: It is disclosed a method for driving a laser diode such as to enable mitigation or elimination of so called spiking effects related to the number of injected carriers in the laser overshooting the equilibrium value at the beginning of the lasing process. In this manner, among other things, the efficiency of a master oscillator power amplifier that may be utilized in range finding applications will be improved. It is further disclosed an optical pulse transmitter comprising such a laser diode.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: October 13, 2015
    Assignee: TRIMBLE AB
    Inventors: Yuri P. Gusev, Mikael Hertzman, Evgeny Vanin, Christian Grässer
  • Patent number: 9046362
    Abstract: A method for a measuring instrument is disclosed, for separating the angular deviation of a rotational axis of an instrument body from a corresponding true rotational axis due to imperfections in at least one rolling-element bearing effectuating the rotational mounting of the instrument body into different parts corresponding to type of imperfection. The method comprises detecting rotary position of the at least one rolling-element bearing, and determining angular deviation of the rotational axis from the corresponding true rotational axis in a plurality of rotational positions of the instrument body, wherein the instrument body is rotated a plurality of successive full or partial revolutions about the rotational axis. There is also disclosed a measuring system and a measuring instrument to be used in such a measuring system.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: June 2, 2015
    Assignee: Trimble AB
    Inventors: Magnus Westermark, Mikael Hertzman
  • Patent number: 8978440
    Abstract: The present invention provides a method for calibrating a geodetic instrument, an instrument and a computer program product thereof. In the method and geodetic instrument of the present invention, a value of at least one parameter affecting the measurements made by the instrument is detected and compared with a predetermined threshold. On the basis of the comparison between the detected value and the predetermined threshold, the instrument aims at a reference target and a calibration is performed using the reference target. The present invention is advantageous in that the accuracy and reliability of the measurements performed by the instrument are increased. Further, the present invention is advantageous in that the requirements on mechanical stability are reduced.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: March 17, 2015
    Assignee: Trimble AB
    Inventor: Christian Grässer
  • Patent number: 8897482
    Abstract: A method for determining, in relation to a surveying instrument, target coordinates of a point of interest, or target, identified in two images captured by a camera in the surveying instrument. The method comprises determining coordinates of the surveying instrument, capturing a first image using the camera in the first camera position; identifying, in the first image, an object point associated with the target; measuring first image coordinates of the object point in the first image; rotating the surveying instrument around the horizontal axis and the vertical axis in order to position the camera in a second camera position; capturing a second image using the camera in the second camera position; identifying, in the second image, the object point identified in the first image; measuring second image coordinates of the object point in the second image; and determining the coordinates of the target in relation to the surveying instrument.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: November 25, 2014
    Assignee: Trimble AB
    Inventors: Nick Mein, Set Svanholm, Christian Graesser, Michael Vogel
  • Patent number: 8860809
    Abstract: A tracker unit for a measuring instrument and a method for operating a tracker unit are disclosed, to distinguish a specific target, such as at least one retroreflector, from other reflective objects in the vicinity of the measuring instrument. The tracker unit includes a plurality of photosensors and first and second optical radiation sources. Each photosensor adapted to generate at least one first set of signals during a period when the first optical radiation source is activated and the second optical radiation source is deactivated, and generate at least one second set of signals during a period when the second optical radiation source is activated and the first optical radiation source is deactivated. On basis of comparison between information extracted on basis of the first set of signals and the second set of signals, respectively, at least one specific target is distinguished from other reflective objects.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: October 14, 2014
    Assignee: Trimble AB
    Inventor: Mikael Nordenfelt
  • Publication number: 20140300952
    Abstract: It is disclosed a method for driving a laser diode such as to enable mitigation or elimination of so called spiking effects related to the number of injected carriers in the laser overshooting the equilibrium value at the beginning of the lasing process. In this manner, among other things, the efficiency of a master oscillator power amplifier that may be utilized in range finding applications will be improved. It is further disclosed an optical pulse transmitter comprising such a laser diode.
    Type: Application
    Filed: May 27, 2014
    Publication date: October 9, 2014
    Applicant: TRIMBLE AB
    Inventors: Yuri P. GUSEV, Mikael HERTZMAN, Evgeny VANIN, Christian GRÄSSER
  • Publication number: 20140233012
    Abstract: An optical device is disclosed that may be employed in distance measuring devices. In at least one embodiment, the optical device includes a control unit that is adapted to cause at least one control signal generator unit to generate at least one control signal according to a predetermined temporal function on the basis of an elapsed time from a predetermined point in time. On the basis of the generated at least one control signal, at least one parameter of a receiver unit may be adjusted during the travel time of the optical pulse, wherein the at least one parameter affects the dynamic range of the receiver unit. In this way, the dynamic range of the receiver unit may be increased. A method is further disclosed for operating such an optical device, along with a distance measuring device including such an optical device and a surveying instrument including such a distance measuring device.
    Type: Application
    Filed: April 29, 2014
    Publication date: August 21, 2014
    Applicant: Trimble AB
    Inventor: Yuri P. GUSEV
  • Patent number: 8755037
    Abstract: An optical device is disclosed that may be employed in distance measuring devices. In at least one embodiment, the optical device includes a control unit that is adapted to cause at least one control signal generator unit to generate at least one control signal according to a predetermined temporal function on the basis of an elapsed time from a predetermined point in time. On the basis of the generated at least one control signal, at least one parameter of a receiver unit may be adjusted during the travel time of the optical pulse, wherein the at least one parameter affects the dynamic range of the receiver unit. In this way, the dynamic range of the receiver unit may be increased. A method is further disclosed for operating such an optical device, along with a distance measuring device including such an optical device and a surveying instrument including such a distance measuring device.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: June 17, 2014
    Assignee: Trimble AB
    Inventor: Yuri P. Gusev
  • Patent number: 8743455
    Abstract: It is disclosed a method for driving a laser diode such as to enable mitigation or elimination of so called spiking effects related to the number of injected carriers in the laser overshooting the equilibrium value at the beginning of the lasing process. In this manner, among other things, the efficiency of a master oscillator power amplifier that may be utilized in range finding applications will be improved. It is further disclosed an optical pulse transmitter comprising such a laser diode.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: June 3, 2014
    Assignee: Trimble AB
    Inventors: Yuri Gusev, Mikael Hertzman, Evgeny Vanin, Christian Grässer
  • Patent number: 8629905
    Abstract: A method is disclosed for localizing a surveying instrument having a housing including at least one camera in relation to a mark located at a ground level. The method comprises the steps of capturing a first image of the ground below the housing in a first camera position and orientation, wherein the first camera position is eccentric to a vertical rotational axis of the surveying instrument, identifying an object point corresponding to the mark in the first image, measuring first image coordinates of the object point in the first image. The method further comprises the steps of capturing a second image of the ground below the housing in a second camera position and orientation, identifying in the second image, an object point corresponding to the mark, and measuring second image coordinates of the object point in the second image.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: January 14, 2014
    Assignee: Trimble AB
    Inventor: Set Svanholm
  • Patent number: 8625086
    Abstract: A method is disclosed for determining coordinates of a target in relation to a surveying instrument wherein a first image is captured using a camera in a first camera position and orientation, a target is selected by identifying an object point in the first image, and first image coordinates of the object point in the first image are measured. The surveying instrument is then rotated around the rotation center so that the camera is moved from the first camera position and orientation to a second camera position and orientation, while retaining the rotation center of the surveying instrument in a fixed position. A second image is captured using the camera in the second camera position and orientation, the object point identified in the first image is identified in the second image, and second image coordinates of the object point in the second image are measured.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: January 7, 2014
    Assignee: Trimble AB
    Inventors: Michael Vogel, Set Svanholm, Christian Grässer
  • Patent number: 8575812
    Abstract: A winding for an n-phase electric motor is disclosed. The inventive winding comprises a number of consecutive winding groups of n individual windings, wherein at any point in time an individual winding of a first group exhibits one direction of current flow and wherein at the same point in time a corresponding individual winding of an adjacent group exhibits the opposite direction of current flow. There is also disclosed a method for preparing such winding. It is further disclosed a magnetic unit adapted for such winding, comprising permanent magnets being essentially triangular in cross-section. Further, there is disclosed electric motors using the inventive winding concept, as well as geodetic instruments taking advantage thereof. An electric motor according to the disclosed inventive concept is particularly well suited for direct drive.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: November 5, 2013
    Assignee: Trimble AB
    Inventors: Magnus Westermark, Mikael Hertzman
  • Publication number: 20130278758
    Abstract: A method for determining position and orientation of a first measuring instrument is disclosed. A second MI and at least one reflective target including a retroreflector unit are arranged in the vicinity of the first MI. At least one imaging module is arranged in the first MI for determining orientation thereof. The at least one imaging module in the first MI can be used in a similar manner as a tracker unit of an optical total station, by way of detecting optical radiation emitted from the second MI and reflected by the at least one TGT.
    Type: Application
    Filed: January 10, 2011
    Publication date: October 24, 2013
    Applicant: TRIMBLE AB
    Inventor: Johan Von Matern
  • Patent number: 8494561
    Abstract: One embodiment of the present invention relates to systems and methods for providing vehicles including construction machines and work vessels at a work site including construction work sites and naval work sites with real time position data from survey units located at the construction work site. In particular, a method according to the present invention includes the steps of accessing a network list identifying vehicles within the site; identifying, by using the network list, a vehicle requiring position data; and initiating a radio communication session with an identified vehicle during which the vehicle is provided with real time position data.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: July 23, 2013
    Assignee: Trimble AB
    Inventor: Ulf Berg
  • Patent number: 8396681
    Abstract: A distance measuring measurement instrument and a method for such a station for scanning a surface or volume of an object are disclosed. The measurement instrument includes a position calculating circuit adapted to calculate position data including at least horizontal and vertical angle and distance between the measurement instrument and the object. A plurality of points in each of a number of subsets of a scanning area of the object during a measurement session and, at detection of a new point in the new subset, information related to at least one point having a corresponding location in at least one preceding subset is used, wherein the preceding subset being adjacent to the new subset.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: March 12, 2013
    Assignee: Trimble AB
    Inventors: Set Svanholm, Grégory Lepere, Guillaume David, Fredrik Gylesjö, Sven Johansson, Björn Magnusson