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公开(公告)号：US10823558B2
公开(公告)日：2020-11-03
申请号：US15345714
申请日：2016-11-08
Applicant: TOPCON Corporation
Inventor： Fumio Ohtomo , Kaoru Kumagai
Abstract: The invention provides a surveying instrument, which comprises a protractor table installed via an installation base and capable of detecting a lateral rotation angle and a surveying instrument main unit mounted on the protractor table via supporting mechanisms capable of rotating longitudinally, wherein the supporting mechanisms enables the surveying instrument main unit to set in a predetermined angle condition with respect to the protractor table, wherein the surveying instrument main unit comprises a distance measuring unit which has a light emitting element for emitting a distance measuring light, a distance measuring light projecting unit for projecting the distance measuring light, a light receiving unit for receiving a reflected distance measuring light and a photodetector for receiving the reflected distance measuring light and for producing a light receiving signal, and the distance measuring unit performs a distance measurement of an object to be measured based on the light receiving signal from the photodetector, a control unit for controlling a distance measuring operation, an optical axis deflecting unit, which is provided on an optical axis of the distance measuring light projecting unit and on an optical axis of the light receiving unit, for controlling a deflection of the both optical axes and an attitude detecting unit which has a tilt detecting unit for detecting a horizontal and mechanisms for tilting the tilt detecting unit so that the tilt detecting unit is maintained horizontally, and is configured to detect a tilting amount of the surveying instrument main unit.
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公开(公告)号：US20200318963A1
公开(公告)日：2020-10-08
申请号：US16824785
申请日：2020-03-20
Applicant: TOPCON Corporation
Inventor： Satoshi Hirano , Kaoru Kumagai , Fumio Ohtomo , Kazuki Osaragi , Nobuyuki Nishita , Tetsuji Anai , Noriyasu Kiryuu
Abstract: There is provided a surveying instrument including a monopod which is installed on a reference point, a surveying instrument main body which is provided at a known distance from a lower end of the monopod and a known angle with respect to an axis of the monopod, two auxiliary legs which extend downward from an middle portion of the monopod at a predetermined angle, wherein the surveying instrument main body comprises a distance measuring unit configured to measure a distance to an object to be measured, a measuring direction image pickup module configured to acquire an observation image including the object to be measured, an attitude detector configured to detect the tilts of the surveying instrument main body with respect to the horizontality, and an arithmetic control module, and wherein the surveying instrument main body is supported by three points by the monopod and the auxiliary legs.
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公开(公告)号：US10697758B2
公开(公告)日：2020-06-30
申请号：US15636767
申请日：2017-06-29
Applicant: TOPCON CORPORATION
Inventor： Fumio Ohtomo , Kaoru Kumagai
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.
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公开(公告)号：US20190186912A1
公开(公告)日：2019-06-20
申请号：US16216218
申请日：2018-12-11
Applicant: TOPCON Corporation
Inventor： Fumio Ohtomo , Tetsuji Anai , Kaoru Kumagai
CPC classification number: G01C15/006 , G01C5/00 , G01C15/008
Abstract: A surveying instrument comprises a monopod installed on a reference point, a surveying instrument main body having a reference optical axis and an operation panel, wherein the surveying instrument main body has a distance measuring unit, an arithmetic control module, a measuring direction image pickup module which acquires a first image, and an attitude detector which detects tilts of two axes of the surveying instrument main body to the horizontal, and wherein the operation panel has a display unit, a calculating module, and as operation module, and the at least either one of the arithmetic control module and the calculating module calculates a tilt angle of the reference optical axis to the horizontal and a tilt angle of the monopod to the vertical, and the at least either one measures a horizontal distance and a vertical distance to the object to be measured with reference to the reference point.
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公开(公告)号：US20190094363A1
公开(公告)日：2019-03-28
申请号：US16132869
申请日：2018-09-17
Applicant: TOPCON Corporation
Inventor： Fumio Ohtomo , Kaoru Kumagai , Ken-ichiro Yoshino
Abstract: A laser measuring instrument comprises a light emitter, a driver, a scanning unit, a light receiving signal processing module for detecting a reciprocating time per pulsed light of a distance measuring light and performing a distance measurement, and a timing generating circuit for issuing a timing signal, wherein the timing generating circuit is configured to issue a timing signal for making the light emitter pulse-emit in a short cycle and a timing signal for pausing a light emission, the driver is configured to make the light emitter pulse-emit according to the timing signals, a light emission time interval in the short cycle is set such that a measuring point is multiply irradiated with the pulsed light by two or more times within a time when the pulsed light passes the measuring point, and the light receiving signal processing module is configured to integrate acquired light receiving signals and to carry out the distance measurement.
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Patent Agency Ranking
公开(公告)号：US20190011536A1
公开(公告)日：2019-01-10
申请号：US16011697
申请日：2018-06-19
Applicant: TOPCON Corporation
Inventor： Fumio Ohtomo , Kaoru Kumagai
Abstract: A laser scanner comprising a distance measuring light projecting unit for emitting at least two distance measuring lights at a known deflection angle with respect to a projecting optical axis, a distance measuring unit for receiving at least two reflected distance measuring lights and performing a distance measurement, respectively, an optical axis deflector for deflecting optical axes of the distance measuring lights and the reflected distance measuring lights at the same deflection angle in the same direction, a projecting direction detecting module for deflecting a deflection angle and a deflecting direction by the optical axis deflector, and an arithmetic control module, wherein the arithmetic control module performs a two-dimensional scanning with the distance measuring lights, draws at least two loci on a plane to be measured, and measures the plane to be measured along at least the two loci substantially at the same time by the distance measuring unit.
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公开(公告)号：US20180284235A1
公开(公告)日：2018-10-04
申请号：US15928471
申请日：2018-03-22
Applicant: TOPCON Corporation
Inventor： Fumio Ohtomo , Kaoru Kumagai
CPC classification number: G01S7/4817 , G01C15/002 , G01S7/003 , G01S7/51 , G01S17/10 , G01S17/89
Abstract: A laser scanner comprises a scanner main unit, wherein the scanner main unit has a distance measuring light projecting component for projecting a distance measuring light, a light receiving component for receiving a reflected distance measuring light, a distance measuring component for performing a distance measurement based on a light receiving signal from the light receiving component, an optical axis deflecting unit for deflecting a distance measuring optical axis, a projecting direction detecting unit for detecting a deflection angle of the distance measuring optical axis, a storage component which stores three-dimensional design drawing data of an object to be measured and a control component for controlling the optical axis deflecting unit and the distance measuring component, wherein the control component acquires scanning data by scanning a measurement range and extracts an actual ridge line or an actual intersection point of the object to be measured based on the scanning data.
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公开(公告)号：US10048063B2
公开(公告)日：2018-08-14
申请号：US15867892
申请日：2018-01-11
Applicant: TOPCON Corporation
Inventor： Fumio Ohtomo , Kaoru Kumagai , Tetsuji Anai
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.
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公开(公告)号：US20180217263A1
公开(公告)日：2018-08-02
申请号：US15868139
申请日：2018-01-11
Applicant: TOPCON Corporation
Inventor： Fumio Ohtomo , Kaoru Kumagai
CPC classification number: G01S19/04 , G01C15/002 , G01C15/06 , G01S19/41 , G01S19/43
Abstract: The invention provides a rover, which comprises a pole of which lower end indicates a point to be measured, a measurement auxiliary apparatus provided at a predetermined position of the pole, a direction detecting device integrally provided with the measurement auxiliary apparatus and for detecting a direction of the measurement auxiliary apparatus, and an object to be measured provided at a known distance from the lower end of the pole,wherein the measurement auxiliary apparatus comprises a horizontal detecting unit which is supported so as to be rotatable around two shafts orthogonal to each other and detects the tilts in two axial directions, motors provided so as to rotate the shafts, encoders provided respectively on the shafts, and an arithmetic processing component for controlling the motors in such a manner that the horizontal detecting unit becomes horizontal based on a detection result from the horizontal detecting unit, wherein the encoders are configured to detect a rotation amount of each shaft in a case where the horizontal detecting unit becomes horizontal, and the arithmetic processing component is configured to calculate the tilts in the two axial directions based on the detection results from the encoders and to calculate a deviation of the object to be measured in two horizontal directions with respect to the point to be measured and a deviation in a vertical direction with respect to the known distance based on a calculation result, the known distance, and a tilting direction obtained from a direction detecting device.
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公开(公告)号：US09979324B2
公开(公告)日：2018-05-22
申请号：US15490457
申请日：2017-04-18
Applicant: TOPCON CORPORATION
Inventor： Kaoru Kumagai , Satoshi Yanobe
CPC classification number: H02N2/142 , G01C15/002 , H02N2/163
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.
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