Patents by Inventor Kaoru Kumagai

Kaoru Kumagai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9909871
    Abstract: The invention provides a surveying instrument, which comprises a horizontal rotating unit and a measuring unit installed on the horizontal rotating unit, wherein the horizontal rotating unit comprises a driving unit for rotating the measuring unit, a horizontal angle detector for measuring horizontal angle data, a first synchronization data generating unit, a first storage unit and a first control unit, the first control unit associates the horizontal angle data with the first synchronization data and stores in the first storage unit, wherein the measuring unit comprises a distance measuring unit for performing a distance measurement, a vertical angle detector for detecting a vertical angle at a time of distance measurement, a second synchronization data generating unit, a second storage unit and a second control unit, the second synchronization data generating unit outputs second synchronization data which indicate timings of a time of acquisition of the distance measurement data and a time of acquisition of
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: March 6, 2018
    Assignee: TOPCON Corporation
    Inventors: Kaoru Kumagai, Ken-ichiro Yoshino
  • Publication number: 20180052232
    Abstract: A measuring method, wherein point cloud data of a building is acquired by a laser scanner, wherein the laser scanner has an attitude detector for detecting a tilting with respect to a horizontality or a verticality, converts the point cloud data into a horizontal distance and a height or a difference of a height based on the tilting detected by the attitude detector, sets a height line at a predetermined height on a wall surface, averages a horizontal distance information of the point cloud data included in a predetermined width with the height line as a center in a height direction, further develops the horizontal distance information along the height line in a horizontal direction, and measures a horizontal cross section at the predetermined height.
    Type: Application
    Filed: August 3, 2017
    Publication date: February 22, 2018
    Inventors: Fumio Ohtomo, Kaoru Kumagai, Tetsuji Anai
  • Patent number: 9897436
    Abstract: The invention provides a measuring instrument, which comprises an image pickup unit for acquiring an image of a range including an object to be measured, a distance measuring unit for two-dimensionally scanning a predetermined range in synchronization with an image acquisition and for measuring, an arithmetic control unit and an attitude detecting unit for detecting a tilt angle of the image pickup unit with respect to a horizontality, wherein the arithmetic control unit associates a measurement result and a detection result of the attitude detecting unit with each pixel on a scanning locus corresponding to an acquired image.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: February 20, 2018
    Assignee: TOPCON Corporation
    Inventors: Fumio Ohtomo, Kaoru Kumagai, Tetsuji Anai
  • Publication number: 20180023944
    Abstract: A laser remote length measurement instrument capable of remotely measuring a length between two required points in a non-contact manner is provided. The laser remote length measurement instrument includes a rangefinding unit, an optical axis deflection section, a rotation angle detector, and a computation controller. The rangefinding unit is configured to cause a light emitting element to emit visible rangefinding light and obtain a light reception signal. The optical axis deflection section is configured to scan to-and-fro between two directions with the rangefinding light. The rotation angle detector is configured to detect a divergence angle between the two directions. The computation controller is configured to compute a distance between illuminated points in the two directions illuminated with the rangefinding light on the basis of rangefinding results for the illuminated points and the divergence angle between the two directions.
    Type: Application
    Filed: June 29, 2017
    Publication date: January 25, 2018
    Applicant: TOPCON CORPORATION
    Inventors: Fumio Ohtomo, Kaoru Kumagai
  • Publication number: 20170363421
    Abstract: A surveying system comprises a total station unit, a laser scanner unit and an arithmetic control unit. The total station unit comprises a frame unit, a telescope unit, a total station distance measuring unit accommodated in the telescope unit and a total station arithmetic control unit, wherein the laser scanner unit is provided on the frame unit and acquires point cloud data by rotatably irradiating a laser beam in a vertical direction, and wherein the arithmetic control unit acquires the point cloud data by a cooperation of a horizontal rotation of the frame unit and a rotary irradiation of the laser beam, compares a distance measurement result of the total station unit with a distance measurement result of the laser scanner unit and corrects the point cloud data based on a comparison result.
    Type: Application
    Filed: June 13, 2017
    Publication date: December 21, 2017
    Inventors: Kaoru Kumagai, Jun-ichi Kodaira
  • Publication number: 20170356158
    Abstract: The invention provides a control system for a construction machine comprises a construction machine and a measuring instrument, wherein the construction machine comprises at least two targets, a tilt detecting component, a driving unit, a machine control unit and a machine communication unit, wherein the measuring instrument comprises a distance measuring unit, an optical axis deflecting unit for deflecting the optical axes, a projecting direction detecting unit for detecting a deflection angle and a deflecting direction and a measurement control unit for determining a measuring point and transmitting a measurement result, wherein the measurement control unit allows the distance measuring unit to alternately measure the targets and calculates a direction and front-back and left-right tilts of the construction machine based on three-dimensional positions of the targets and a detection result of the tilt detecting component, and the machine control unit controls the driving unit based on a calculation result.
    Type: Application
    Filed: June 13, 2017
    Publication date: December 14, 2017
    Inventors: Fumio Ohtomo, Kaoru Kumagai
  • Publication number: 20170350692
    Abstract: The invention provides a measuring instrument, which comprises an image pickup unit for acquiring an image of a range including an object to be measured, a distance measuring unit for two-dimensionally scanning a predetermined range in synchronization with an image acquisition and for measuring, an arithmetic control unit and an attitude detecting unit for detecting a tilt angle of the image pickup unit with respect to a horizontality, wherein the arithmetic control unit associates a measurement result and a detection result of the attitude detecting unit with each pixel on a scanning locus corresponding to an acquired image.
    Type: Application
    Filed: May 23, 2017
    Publication date: December 7, 2017
    Inventors: Fumio Ohtomo, Kaoru Kumagai, Tetsuji Anai
  • Patent number: 9816921
    Abstract: A material analytical sensor includes an emitter that irradiates a material with irradiation light including a wavelength region related to estimation of an amount of a component of the material, a controller that controls an irradiation cycle of the irradiation light, a receiver that receives reflected light from the material to output as a pulse signal and receives disturbance light to output as a noise signal, an integrator that samples N pulse signals during a predetermined period and integrates the sampled N pulse signals to obtain a first integrated value, and samples N noise signals during a same period as the predetermined period with a same cycle as the irradiation cycle and integrates the sampled N noise signals to obtain a second integrated value, and an extractor that deducts the second integrated value from the first integrated value to extract an amount of the reflected light.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: November 14, 2017
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Kaoru Kumagai, Shugo Akiyama
  • Publication number: 20170309806
    Abstract: Provided is a method for controlling an ultrasonic motor to reduce noise sounding during low-speed rotation in a surveying instrument adopting the ultrasonic motor for a rotary shaft, and a surveying instrument for the same. In a method for controlling an ultrasonic motor according to an aspect of the present invention, in a low-speed rotation range of an ultrasonic motor, a ratio of an acceleration period as a time of application of the drive signal in a control cycle is controlled, and a time to start the acceleration period is randomly shifted for each control cycle. In a method for controlling an ultrasonic motor according to another aspect, a time to start the acceleration period is regularly shifted for each control cycle. In a method for controlling an ultrasonic motor according to still another aspect, second-half acceleration control and first-half acceleration control are alternately repeated.
    Type: Application
    Filed: March 20, 2017
    Publication date: October 26, 2017
    Inventors: Kaoru KUMAGAI, Satoshi YANOBE, Tetsutaro KOUJI
  • Publication number: 20170310248
    Abstract: Provided is a method for controlling an ultrasonic motor provided at a rotary shaft of a surveying instrument to meet requirements for a rotation speed and a plurality of operation modes, and a surveying instrument for the same. In the present invention, the ultrasonic motor is controlled by a first signal having a square wave in a range of rotation speed of the rotary shaft from zero to a first speed, controlled by a second signal in which rises or falls of the square wave are sloped in a range from the first speed to a second speed, controlled by a third signal in which rises and falls of the square wave are sloped in a range from the second speed to a third speed, and controlled by a fourth signal in which the drive signal is continuously applied in a range higher than the third speed.
    Type: Application
    Filed: April 18, 2017
    Publication date: October 26, 2017
    Inventors: Kaoru KUMAGAI, Satoshi YANOBE
  • Publication number: 20170299386
    Abstract: Provided is a method for controlling an ultrasonic motor to reduce deterioration of automatic tracking performance, and a surveying instrument for the same. The present invention provides a method for controlling an ultrasonic motor in a surveying instrument including a rotary shaft, an ultrasonic motor that drives a rotary shaft, a tracking unit that includes a light emitting unit and a light receiving unit and tracks a target, and a clock signal oscillation unit that outputs a clock signal, wherein at the time of low-speed rotation of the ultrasonic motor, based on the clock signal, a ratio of an acceleration period in which a drive signal is applied and a deceleration period in which the drive signal is stopped in a drive cycle of the drive signal of the ultrasonic motor is set, and the light emitting unit is made to emit light in the deceleration period.
    Type: Application
    Filed: April 3, 2017
    Publication date: October 19, 2017
    Inventors: Kaoru KUMAGAI, Satoshi YANOBE, Tetsutaro KOUJI
  • Patent number: 9773420
    Abstract: The invention provides a measuring system comprising a remotely controllable flying vehicle system with a GPS device and a measuring device installed thereon, a position measuring device installed at an arbitrary position and able to measure distance and angle and to track, a ground base station for controlling a flight of a flying vehicle, a remote controller able to give and take data to and from the ground base station and able to perform wireless communication to and from the flying vehicle system, and a control unit provided on the flying vehicle system or the ground base station, and either one of the control units are configured to obtain an absolute coordinate or GPS coordinate of the installation point of the position measuring device based on the GPS coordinates of the two points and based on distance measurement results and on angle measurement results by the position measuring device.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: September 26, 2017
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Fumio Ohtomo, Kaoru Kumagai, Kazuki Osaragi, Hitoshi Otani
  • Patent number: 9752876
    Abstract: A direction detecting apparatus provided at a known position from a lower end of a supporting pole, comprising an image pickup device with an optical axis orthogonal to an axis of the supporting pole and an arithmetic processing part for calculating based on an image from the image pickup device, wherein the image pickup device acquires an image so as to include an object for which a direction is to be detected, wherein the arithmetic processing part calculates and detects a direction and a tilt of the object from a relation between a position of the object in the image and an optical axis of the image pickup device.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: September 5, 2017
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Fumio Ohtomo, Kaoru Kumagai, Kazuki Osaragi
  • Patent number: 9739610
    Abstract: A system including a pointing rod 4 positioned on a measurement point X, a prism 3 fixed at a position deviated by a first fixed length L1 from the measurement point X in an axial direction PP of the pointing rod 4, an inclination casing 5 for fixing an analysis pattern 41 located at a position deviated by a second fixed length L2 from the prism 3 in an axial direction of the pointing rod 4 and is perpendicular to a surface with respect to the axial direction of the pointing rod 4, and a survey machine 2 having an image-taking section 22, a section of measuring a distance to the prism, and a section of measuring an angle 11,12. The position of the measurement point is measured from a position of the prism 3, an inclination direction A of the pointing rod 4, and the first fixed length L1.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: August 22, 2017
    Assignee: KABUSHIKI KAISHA TOPCON
    Inventors: Nobuyuki Nishita, Kaoru Kumagai
  • Patent number: 9733080
    Abstract: The invention provides a wide-angle image pickup unit, comprising at least two cameras (4a and 4b) to take digital images, wherein the two cameras are arranged in such a manner that optical axes (11a and 11b) of the two cameras cross perpendicularly each other on a same plane and images of wide field angle ? with the crossing point O as a center enable to be acquired, and wherein parts of field angles of the two cameras are superimposed on each other and an overlapping portion is formed by the two images superimposed on each other, and stereoscopic measurement can be performed based on the two images of the overlapping portion.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: August 15, 2017
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Fumio Ohtomo, Kaoru Kumagai, Hitoshi Otani
  • Patent number: 9733076
    Abstract: A rotary laser emitting apparatus that rotates and emits a laser beam comprises an emission-side control unit that controls an entire operation of the apparatus, a laser emitting mechanism that emits the laser beam while rotating an irradiation optical axis that is an emission direction of the laser beam, and a rotating direction detecting unit that detects a rotating direction of the irradiation optical axis. The emission-side control unit generates a rotating posture signal showing the rotating direction of the irradiation optical axis detected by the rotating direction detecting unit and drives the laser emitting mechanism for superimposing the rotating posture signal on the laser beam.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: August 15, 2017
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Kaoru Kumagai, Junichi Kodaira, Fumihiko Kamizono
  • Patent number: 9733082
    Abstract: The invention provides a tilt detecting system comprising, a surveying instrument having a distance measuring function and a line laser projecting unit installed as horizontally rotatable for projecting a vertical line laser, and a photodetection device having at least two photodetection units provided at a known interval, a target with a retro-reflectivity and an arithmetic unit, wherein the line laser projecting unit is rotated, each of the photodetection units are made to scan the line laser and the arithmetic unit detects a tilting angle of the photodetection device based on a deviation between a photodetection time moment of each photodetection unit and the distance measurement result of the target of the surveying instrument.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: August 15, 2017
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Kaoru Kumagai, Fumio Ohtomo
  • Publication number: 20170227357
    Abstract: The invention provides a surveying instrument, which comprises a measuring unit for performing a distance measurement by projecting a distance measuring light toward an object to be measured, an image pickup unit for picking up an image including the object to be measured, an attitude detecting unit provided integrally with the image pickup unit, and an arithmetic processing unit, wherein the attitude detecting unit has tilt sensors for detecting a horizontal and a relative tilt angle detecting unit for detecting a tilt angle of the measuring unit with respect to the horizontal, and wherein the arithmetic processing unit calculates a tilting of the image with respect to a vertical based on a detection result of the attitude detecting unit and displays vertical lines in the image acquired by the image pickup unit based on this calculation result.
    Type: Application
    Filed: February 1, 2017
    Publication date: August 10, 2017
    Inventors: Fumio Ohtomo, Kaoru Kumagai, Tetsuji Anai
  • Publication number: 20170167870
    Abstract: The system includes a survey machine 2 having an image-taking section 22, a section 20 of measuring a distance to a target 3 and a section of measuring an angle 11, 12, a pointing rod 4 which is positioned on the measurement point X and includes, at a position deviated from a fixed length L from the measurement point, the prism, and an inclination sheet 5 having a mark 43. The three-dimensional position of the measurement point is measured by equipping the inclination sheet to the pointing rod 4, imaging a mark surface 41 in the image-taking section 22, calculating the inclination angle of the inclination sheet with respect to the eye direction from the survey machine by image-analyzing the mark surface 41, and measuring the three-dimensional position of the measurement point from a three-dimensional position of the prism, the inclination angle of the inclination sheet and the fixed length.
    Type: Application
    Filed: January 22, 2016
    Publication date: June 15, 2017
    Inventors: Nobuyuki NISHITA, Kaoru KUMAGAI
  • Publication number: 20170168142
    Abstract: The invention provides a measuring instrument, which comprises a light emitting element, a distance measuring light projecting unit, a light receiving unit, a distance measuring unit for performing a distance measurement, a first optical axis deflecting unit for deflecting an optical axis of a distance measuring light, a second optical axis deflecting unit for deflecting a reflected distance measuring light, a projecting direction detecting unit for detecting a deflection angle and a deflecting direction, and a control unit, wherein the distance measuring light is projected through the first optical axis deflecting unit, the reflected distance measuring light is received by a light receiving element through the second optical axis deflecting unit, and the control unit acquires three-dimensional data of a measuring point based on a result of the distance measurement of the distance measuring unit and on a detection result of the projecting direction detecting unit.
    Type: Application
    Filed: December 9, 2016
    Publication date: June 15, 2017
    Inventors: Kaoru Kumagai, Fumio Ohtomo