Kabushiki Kaisha Topcon

Topcon Corporation

Jun-ichi Kodaira

Fumio Ohtomo

Kaoru Kumagai

Hiroyuki Nishizawa

Kunihiro Hayashi

Kenichirou Yoshino

Kazuki Osaragi

Ken-ichiro Yoshino

Ikuo Ishinabe

Satoshi Hirano

Takashi Takahashi

Takaaki Yamazaki

Kenichiro Yoshino

Raymond M O'Connor

Yohei Ogawa

Hiroshi Koizumi

Satoshi Yanobe

Naoto Miki

Hiroo Sugai

Takayuki Fujioka

Mitsutoshi Ohoka

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.

Surveying system

A tilt detecting device comprising, a light source for projecting a pattern, a liquid component having a free liquid surface and for rear-surface reflecting by the free liquid surface, a photodetection element for photodetecting a reflection image of the rear-surface reflected pattern, and an arithmetic processing unit, wherein the arithmetic processing unit is adapted to scan a predetermined range of a photodetection surface of the photodetection element as many times as required and performs averaging processing to a photodetection signal as detected and calculates a barycentric position of the pattern based on signals subjected to averaging processing.

Tilt detecting device

The invention provides a tilt detecting device, in which a fixed member and a tilting plate are relatively rotatably provided via a pivot member, either one of the fixed member or the tilting plate is integral with the pivot member, comprising a tilt detecting unit provided on either of the fixed member or the tilting plate which relatively rotates with respect to the pivot member, and an angle detection pattern formed on the pivot member, wherein the tilt detecting unit comprises a light source for projecting an illumination light to the pivot member, a photodetection element for receiving the illumination light reflected by the pivot member, an optical system for projecting a pattern image to the photodetection element and an arithmetic unit for detecting a rotation of the pivot member based on a projecting position of the pattern image projected onto the photodetection element when the pivot member rotates.

Tilt detecting device and rotary laser apparatus

A simplified distance meter comprises a frame, at least two wheels installed in front and rear of the frame, rotation detectors for detecting rotation of at least one wheel, and tilt detecting means installed on the frame, wherein amount of rotations of the wheels is obtained by the rotation detector, and tilting of the frame corresponding to the amount of rotations is acquired by the tilt detecting means.

Simplified distance meter

The invention provides a surveying system, which comprises an electronic level and staff devices belonging to either one of two or more groups, wherein the staff device has staffs with bar codes corresponding to groups, to which a staff belongs, and mobile station devices installed on the staffs, wherein the mobile station device has a mobile station display unit to display working data and a mobile station communication unit for performing wireless communication to and from the electronic level, wherein the electronic level has an image pickup unit for acquiring images within a range of working, a control device for extracting staff images from the images, for identifying as to which group the bar code pattern of the extracted staff image belongs and for determining three-dimensional position of the staff based on the staff image, and a main communication unit for transmitting the three-dimensional position obtained to the mobile station device, and wherein the mobile station device displays the relation between the three-dimensional position of the staff as received and the working data on the mobile station display unit.

A surveying instrument which comprises a rotation unitadapted to direct a distance measuring optical axis to an object to be measured and the rotary drive unitrotates the rotation unit, comprising a rotary motor for rotating an output shaftand a clutch unit for connecting or disconnecting the rotary motor and the output shaft, wherein the rotary motor and the clutch unit are arranged in a series along the output shaft, and the output shaft is fixed to the rotation unit.

Rotary drive unit of a surveying instrument and a surveying instrument

The invention provides a tilt angle detecting device which has a two-liquid tube (), comprising a transparent container () containing a first liquid () and a second liquid () having different property, specific gravity, and optical transmissivity from each other, wherein a movement occurs between the first liquid and the second liquid by tilting of the transparent container.

Tilt angle detecting device

A construction machine control system comprises a laser surveying instrument for projecting a laser beam in rotary irradiation at constant speed and a construction machine for operating in a photodetection range of the laser beam, and in the construction machine control system, the construction machine comprises a working mechanical unit for carrying out construction operation, a machine control device for controlling the working mechanical unit, and at least three beam detectors which are disposed at known positions with respect to a device reference position of the construction machine and have a photodetector for receiving the laser beam and a direction of the construction machine is calculated based on photodetection timing of each of the beam detectors and the machine control device controls the working mechanical unit so that direction of the construction machine is set to a condition as required based on a result of calculation.

Construction machine control method and construction machine control system

The invention provides a surveying instrument () which has a measuring unit comprises an operation control panel () rotatably mounted on the measuring unit with vertical axis as the center with respect to the measuring unit, and a relative angle detecting means for detecting a relative angle of the operation control panel and the measuring unit, wherein the operation control panel is so arranged that a command is issued to relatively rotate the measuring unit based on the relative angle detected by the relative angle detecting means.

Surveying instrument

An attachment deviceis for attaching and removing a distance measuring instrumentto and from an angle measuring instrument, and the attachment device comprises a base unitwhere the distance measuring instrument is fixed, a fixing unitfor fixing the base unit on the angle measuring instrument, and an optical memberfor deflecting a distance measuring light from the distance measuring instrument so as to concur with a sighting optical axis of the angle measuring instrument.

Attachment device and total station

An image measuring system comprises a projection optical system, having a light source for emitting and projecting an illumination light through a light projection optical axis. The system further comprises a photodetection optical system, having an image pickup element, which receives a retroreflection light from an object to be measured through a photodetection optical axis, and a control arithmetic device for processing the data taken by the image pickup element. The projection optical system comprises a light projection unit for directing the light projection optical axis toward the object to be measured and projecting the illumination light, a projection angle changing means for rotating the light projection unit in an elevating and a horizontal direction and for changing a projection angle of the illumination light, and a direction detecting means for detecting a direction angle of the light projection optical axis with respect to the photodetection optical axis.

Image measuring system

A laser surveying system comprises a leveling unit () having a motor for leveling, a light source unit () for emitting a laser beam, a light projecting optical system installed on the leveling unit and for projecting the laser beam, a power supply unit for supplying electric power to each of component sites, a control unit () for driving and controlling each of the component sites, a storage unit (), a tilt detecting means () installed on the leveling unit and used for detecting leveling conditions, a rotation number detecting means () for detecting number of rotations of the motor, a light source detecting means (and) for detecting light emitting condition of the light source unit, a voltage detecting means () for detecting output voltage of the power source unit, and an abnormality detecting means for detecting operational abnormality, and in the laser surveying system, the control unit monitors whether there is abnormality or not by the abnormality detecting means, samples a detection signal from each of the detecting means at a predetermined time interval, and stores signal groups thus detected in the storage unit in time series as sampling data, and when the stored sampling data exceeds a predetermined amount, older data are deleted, and new sampling data are sequentially overwritten, and when at least one of the detection signals for monitoring indicates abnormality, using a point to indicate the abnormality as a base point, the sampling data in a range of a predetermined time period are exempted from the objects of deletion and are preserved as data for analysis of the cause of abnormality.

Laser surveying system

A rotary laser irradiating system, comprising a light emitting unit () for emitting a laser beam, a rotator for forming a reference plane by projecting the laser beam by rotary irradiation, a tilt driving unit () for tilting the reference plane, a control unit () for controlling a light emission of the light emitting unit, and a tilted axis indicating means () for turning off the laser beam so as to form a tilted reference axis indicating range in a tilt setting reference axis direction for setting a tilt.

Rotary laser irradiating system and rotary laser system

A construction machine control system comprises a laser surveying instrument for projecting N-shaped beams in rotary irradiation, a construction machine operated within a predetermined range of the N-shaped beams, and an elevation angle detecting unit. The construction machine comprises a working mechanical unit for carrying out construction operation, a machine control device for controlling the working mechanical unit, and at least three beam detectors disposed at known positions with respect to reference position of the construction machine. The beam detectors detect the three fan beams and output result of photodetection. The elevation angle detecting unit obtains elevation angles of each of the beam detectors with respect to the laser surveying instrument based on result of photodetection of three fan beams from the beam detectors. The machine control device is configured to control tilting of the working mechanical unit based on the elevation angle obtained.

A laser surveying instrument, comprising a laser projector for projecting a laser beam by rotary irradiation and designed as tiltable, a tilting unit for tilting the laser projector, a rotating unit for integrally rotating the tilting unit and the laser projector in horizontal direction, a tilt setting unit for tilting the laser projector with respect to the rotating unit and for setting a target tilt angle, a tilt angle detector for detecting tilting of the laser projector, tilt sensors provided on the tilt setting unit in two directions perpendicularly crossing and for detecting horizontal direction, a horizontal angle detector for detecting horizontal rotation angle of the rotating unit, and an arithmetic control unit for controlling rotation angle of the rotating unit based on detection results of the tilt sensors and based on detection results of the horizontal angle detector.

Growing community of inventors

Tokyo-to, Japan

Jun-ichi Kodaira