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1177 results about "Total station" patented technology

A total station (TS) or total station theodolite (TST) is an electronic/optical instrument used for surveying and building construction. It is an electronic transit theodolite integrated with electronic distance measurement (EDM) to measure both vertical and horizontal angles and the slope distance from the instrument to a particular point, and an on-board computer to collect data and perform triangulation calculations.

3D point locator system

An automated system and method of geometric 3D point location. The invention teaches a system design for translating a CAD model into real spatial locations at a construction site, interior environment, or other workspace. Specified points are materialized by intersecting two visible pencil light beams there, each beam under the control of its own robotic ray-steering beam source. Practicability requires each beam source to know its precise location and rotational orientation in the CAD-based coordinate system. As an enabling sub-invention, therefore, an automated system and method for self-location and self-orientation of a polar-angle-sensing device is specified, based on its observation of three (3) known reference points. Two such devices, under the control of a handheld unit downloaded with the CAD model or pointlist, are sufficient to orchestrate the arbitrary point location of the invention, by the following method: Three CAD-specified reference points are optically defined by emplacing a spot retroreflector at each. The user then situates the two beam source devices at unspecified locations and orientations. The user then trains each beam source on each reference point, enabling the beam source to compute its location and orientation, using the algorithm of the sub-invention. The user then may select a CAD-specified design point using the handheld controller, and in response, the handheld instructs the two beam sources to radiate toward the currently selected point P. Each beam source independently transforms P into a direction vector from self, applies a 3×3 matrix rotator that corrects for its arbitrary rotational orientation, and instructs its robotics to assume the resultant beam direction. In consummation of the inventive thread, the pair of light beams form an intersection at the specified point P, giving the worker visual cues to precisely position materials there. This design posits significant ease-of-use advantages over construction point location using a single-beam total station. The invention locates the point effortlessly and with dispatch compared to the total station method of iterative manual search maneuvering a prism into place. Speed enables building features on top of point location, such as metered plumb and edge traversal, and graphical point selection. The invention eliminates the need for a receiving device to occupy space at the specified point, leaving it free to be occupied by building materials. The invention's beam intersection creates a pattern of instantaneous visual feedback signifying correct emplacement of such building materials. Unlike surveying instruments, the invention's freedom to situate its two ray-steering devices at arbitrary locations and orientations, and its reliance instead on the staking of 3 reference points, eliminates the need for specialized surveying skill to set up and operate the system, widening access to builders, engineers, and craftspeople.
Owner:BIERRE PIERRE

Wide-baseline visible light camera pose estimation method

The invention relates to a wide-baseline visible light camera pose estimation method. The method includes the steps that firstly, the Zhang calibration method is used, and internal references of cameras are calibrated through a plane calibration board; eight datum points on a landing runway are selected in a public visual field region of the cameras and world coordinates of the datum points are accurately measured off line through a total station; in the calibration process, cooperation identification lamps are placed in the positions of the datum points and the poses of the cameras are accurately calculated through detection of the cooperation identification lamps. According to the method, the complex natural scene characteristic of an unmanned aerial vehicle landing scene and the physical light sensing characteristic of the cameras are considered, and glare flashlights are designed and used as the cooperation identification lamps of the visible light cameras; the eight datum points are arranged on the landing runway and space coordinates of the datum points are measured through the total station according to space accuracy at a 10 <-6> m level. According to the method, a calibration result is accurate and a re-projection error on an image is below 0.5 pixel.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Method and system for monitoring paving thickness of high-level highway pavement in real time

ActiveCN103866673ARealize full-section acquisitionReduce one-sidednessUsing optical meansRoads maintainenceLaser rangingGeomorphology
The invention discloses a method and a system for monitoring paving thickness of a high-level highway pavement in real time, belonging to the field of road construction quality control. The method comprises the following steps: erecting an automatic tracking total station nearby a paving site, determining the position of an erection point through a resection survey method according to the known point coordinate, positioning and tracking a 360-degree prism according to enough short time interval by utilizing the automatic tracking total station, measuring the inclination angles of a transverse beam and a longitudinal beam of a platform trolley in the device by adopting an inclinometer, and measuring the distance from the transverse beam to the paved pavement by adopting a laser distance measuring sensor arranged on the transverse beam; calculating three-dimensional coordinates (x, y, z) of the position points of the paved pavement measured by each laser distance measuring sensor according to a spatial geometrical relation between each laser distance measuring sensor and the prism; projecting to obtain elevation z0 of the position point on a datum plane before paving; solving the difference between elevations z and elevation z0 to obtain the paving thickness; and judging whether the paving thickness at the position point accords with the control standard, otherwise, transmitting alarm information. The method is mainly applied to road construction quality control.
Owner:TIANJIN UNIV

Total station instrument based subway tunnel deformation automatic monitoring method and device

The invention relates to a total station instrument based subway tunnel deformation automatic monitoring method and device. The total station instrument based subway tunnel deformation automatic monitoring device comprises a data acquisition module, a core control module and a data communication module, wherein the core control module is connected with the data acquisition module through the data communication module. When the total station instrument is levelled, the core control module calculates space position information parameters of observation stations and a turning reference point with given point coordinates serving as a reference coordinate system due to the observation of a given point circular prism located in a stability area and a 360-degree prism of the turning reference point located in a deformation area, three-dimensional coordinates of a to-be-measured point are measured after observation station positioning parameters are updated, coordinates under a reference coordinate system are obtained after coordinate conversion is performed on the measured coordinates of the observation stations, and absolute coordinates of to-be-measured target points are obtained under the reference coordinate system. Compared with the prior art, the total station instrument based subway tunnel deformation automatic monitoring device has the advantages of greatly saving manual costs, improving the data reliability, allowing monitoring of the tunnel in real time at full day.
Owner:TONGJI UNIV

Monitoring method of bottom soil heave of excavation foundation pit

ActiveCN103352455AReal-time monitoring of uplift deformationArbitrarily adjust the height required for measurementIn situ soil foundationDeformation monitoringEngineering
The invention belongs to the technical field of foundation pit deformation monitoring and particularly relates to a monitoring method of a bottom soil heave of an excavation foundation pit. The monitoring method comprises the specific steps of: arranging a prism hoisting device on a monitoring point at the bottom of an excavated foundation pit and fixing a prism at the top; erecting a total station for forming intervisibility with the prism on the ground outside the foundation pit so as to realize the aim of monitoring the deformation amount of the bottom soil heave of the foundation pit; meanwhile, selecting a standard point on a stable building outside the foundation pit and setting the prism so as to monitor a micro deformation amount of a work station and revise a measured value of the monitoring point according to the micro deformation amount, thus improving the measuring precision. The monitoring method disclosed by the invention has the advantages that the deformation amount of the bottom soil heave of the foundation pit is monitored in real time; the operation method is simple and convenient; a monitoring device is existing equipment, the cost is low and the measurement precision is high; the prism hoisting device can randomly adjust and measure the needed height so that the intervisibility is formed by the prism and the total station all the time; the monitoring method is particularly suitable for foundation pit engineering in an excavation process.
Owner:SHANGHAI URBAN CONSTRUCTION MUNICIPAL ENGINEERING (GROUP) CO LTD

Tunnel back-break detection method based on laser-point cloud

The invention discloses a tunnel back-break detection method. The method includes the following steps that S1, according to center line data of a tunnel line, the thickness value and width value of a section are set, and tunnel section point cloud automatic partitioning is carried out; S2, the partitioned section point cloud is projected to the XOY plane, and a convex hull extraction method is adopted for carrying out automatic extraction of a section point cloud contour lines to obtain a measured section line; and S3, the tunnel design section is utilized, the distances between feature points of the tunnel design section and the measured section line and the locations of the feature points are calculated, and back-break automatic detection is carried out. Tunnel back-break detection is carried out by utilizing three-dimensional laser-point cloud data, and rapid partitioning of the section point cloud is achieved by adopting radius searching and a rectangular partitioning algorithm; on the basis of back-break area statistics of a polygonal intersection algorithm, the method is suitable for back-break detection of various types of tunnels; and compared with a traditional total-station section measurement mode, the detection efficiency is high, results are comprehensive and full and accurate, and the measurement precision meets the back-break detection requirement.
Owner:CHINA RAILWAY DESIGN GRP CO LTD

Simulation experiment device and method of alternating current, direct current and impact performance of large earth screen

The invention provides a simulation experiment device and a method of alternating current, direct current and impact performance of a large earth screen. The device mainly comprises a rectangular simulated slot, an earth screen model equivalently reduced, an alternating and direct current experimental power supply, an impact current generator and a precise positioning system, and is characterized in that metal grids are laid on four walls and the bottom inside the rectangular simulated slot, so as to form a mesh backflow electrode; a liquid medium is injected into the slot; the earth screen model is designed and manufactured according to the experimental objective and content; the precise positioning system comprises an electrically controlled traveling crane and a total station; and the electric potential in any position in the rectangular simulated slot is convenient to measure at a fixed point through the coordination work of the electrically controlled traveling crane and the total station. The simulation experiment device and the method can meet the experimental research on direct current, power frequency and impact grounding properties of the large earth screen, can also be extensively applied to the fields, such as the experimental research of influence on aquatic organism and metal pipelines by an alternating and direct current system and corrosive property, and the like, and have the advantages of simplicity in operation, large power capacity, durability, flexibility and diversity in refitment and the like.
Owner:CHINA ELECTRIC POWER RES INST +2

Detection method for restrictedly measuring track parameters and track checking instrument

The invention discloses a detection method for restrictedly measuring track parameters and track checking instrument. The detection method for restrictedly measuring track parameters comprises the following steps that: a total station accurately aims to a prism of a trolley for accurately measuring the absolute three-dimensional coordinates of the start and end points of the trolley; an encoder transmits pulse to trigger a strap down inertial sensor, a displacement sensor and a dip sensor to acquire data; and the acquired data are transmitted to a data controlling and processing system for processing to obtain the central line transverse deviation, the central line vertical deviation, the track distance and the track level. The track checking instrument for restrictedly measuring track parameters comprises a track checking trolley, a wireless communication element of the total station, the data controlling and processing system and the total station, wherein the total station is connected with the data controlling and processing system through the wireless communication element of the total station. Due to the adoption of the detection method for restrictedly measuring track parameters and the track checking instrument, the aim of measuring continually dynamically for a long distance is fulfilled, and the operation efficiency is greatly increased.
Owner:成都四方瑞邦测控科技有限责任公司

External field antenna pattern testing method

InactiveCN103558459AReduce the number of movesSolve the problem of test angle positioningAntenna radiation diagramsTest efficiencyOptical measurements
The invention discloses an external field antenna pattern testing method. A test station is looked for as an auxiliary antenna and an antenna rotation platform system are installed on a mobile maneuvering device and move around a measured antenna; a total station in an optical surveying and mapping instrument is innovatively adopted for locating the angle and the distance when the antenna moves and a test station with the corresponding deviation angle can be accurately located. By the adoption of the test station locating method where the maneuvering device, the total station in the optical surveying and mapping instrument and the antenna rotation platform system are combined, the measuring angle can be located accurately to local conditions under conditions of an external field. Meanwhile, after the measuring station is located, the total station is used for automatically tracking azimuth information and a horizontal scan frame on the antenna rotation platform system is used for moving the auxiliary antenna, so that the auxiliary antenna can be accurately located at all measuring stations within a certain measurement angle range at each measuring station, the moving frequency of the maneuvering device is lowered, errors brought by moving of the maneuvering device are reduced and the testing efficiency is improved.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

System and method for measuring bridge deflection based on close-range photographic measurement

InactiveCN103344396AOvercome the problem of not being able to installReduce field workUsing optical meansElasticity measurementMeasuring instrumentLight reflection
The invention discloses a system and method for measuring bridge deflection based on close-range photographic measurement. According to the system and method for measuring the bridge deflection based on the close-range photographic measurement, the problem that in a special environment, a contact type displacement measuring instrument can not be installed is solved. The system for measuring the bridge deflection based on the close-range photographic measurement comprises a total station, two single-lens light reflection cameras, an industrial control computer, 4-5 control points arranged on piers, 6-8 control points arranged on uprights and three target points. The measuring distance of the total station is 5m-50m and the shooting distance of the two single-lens light reflection cameras is 3m-15m; the three target points are located on supporting point portions and in the middle of each stride of the bridge, the control points arranged on the piers are arranged on two piers, and the control points arranged on the uprights are arranged below and in front of the three target points. The distance between the abscissa and the ordinate of every two adjacent control points of the control points arranged on the piers and the control points arranged on the uprights is 3m-10m. The industrial control computer and the two single-lens light reflection cameras are connected through signal lines. The invention further provides the measuring method.
Owner:JILIN UNIV

Three-Dimensional Measuring Method And Surveying System

The invention provides a surveying system comprising a total station installed at a known point and having a tracking function, at least one movable measuring device having a prism for retro-reflecting a distance measuring light and a tracking light projected from the total station and capable of moving and of performing three-dimensional measurement on an object to be measured and an arithmetic control part, wherein the movable measuring device has an auxiliary measuring unit capable of measuring a distance and an angle of the object to be measured and an attitude detector capable of detecting a measuring direction, a tilting and a tilting direction of the movable measuring device, wherein the movable measuring device performs three-dimensional measurement on the object to be measured with reference to direction of the total station based on the measurement result of the auxiliary measuring unit and on the detection result of the attitude detector at an arbitrary measurement position as being sighted from the total station, wherein the total station performs three-dimensional measurement on the measurement position, and wherein the arithmetic control part performs three-dimensional measurement on the object to be measured with reference to the total station based on the result of three-dimensional measurement obtained by the movable measuring device and on the measurement result by the total station.
Owner:KK TOPCON

Building information modeling (BIM) augmented reality lofting system based on electronic total station and photogrammetric technology

ActiveCN106017436AQuick measurement stakeoutFull mapActive open surveying meansTotal stationAugmented reality
The invention relates to a measuring technology, and discloses a building information modeling (BIM) augmented reality lofting system based on an electronic total station and a photogrammetric technology. The BIM augmented reality lofting system comprises an augmented reality device, the electronic total station, a positioning device and a to-be-measured marker, wherein the to-be-measured marker or the augmented reality device is fixed with the positioning device; at least four optical identification points are arranged on on the electronic total station; the positioning device comprises a camera; the camera is used for acquiring images of the optical identification points, arranged on the electronic total station, in the camera, calculating the relative attitudes of the optical identification points and the positioning device, and calculating the attitude of the positioning device in an engineering measurement coordinate system according to the relative attitudes of the optical identification points and the positioning device; the electronic total station is used for acquiring coordinates of the positioning device; the augmented reality device is used for calculating the coordinates, elevation and attitude of the to-be-measured marker or the augmented reality device in the engineering measurement coordinate system according to the relative distance and attitude of the to-be-measured marker or the augmented reality device and the positioning device, thus realizing fusion of coordinates.
Owner:廖卫东

Total station collimation line method horizontal displacement observation platform and application method thereof

The invention relates to a total station collimation line method horizontal displacement observation platform. The total station collimation line method horizontal displacement observation platform comprises a foundation support, a slideway which is arranged on the foundation support, a collimation part which is perpendicular to the foundation support and can slide along the slideway, a pointer which is fixed on the bottom of the collimation part, a scale surface which is arranged on the foundation support and corresponds to a reading pointer and a laser. When the observation platform is in use, the scale surface of the total station collimation line method horizontal displacement observation platform is closely fit to a moved deformation monitoring point, an observation direction is determined by virtue of laser transmitted by the laser, the scale surface is adjusted to be perpendicular to a collimation plane, three adjusting screws are rotated to guarantee the levelness of the foundation support, an initial scale value, which is aligned at the center of the deformation monitoring point, of the observation platform at the moment is recorded, a deformation monitoring point is found, the collimation part is horizontally moved by an operator of the observation platform, a reflecting plate with a collimation crossing on the collimation part is overlapped with a cross wire in a total station telescope, the scale value corresponding to the reading pointer is recorded, and the initial scale value is subtracted from the scale value to obtain the displacement of the deformation point deviated from the collimation plane, namely the displacement of the deformation point relative to an original position. The total station collimation line method horizontal displacement observation platform is simple in structure and convenient to operate.
Owner:TONGJI UNIV

Shield machine automatic guiding system based on optical fiber gyro and PSD laser target

The invention relates to an automatic guiding system of shield machine based on fiber gyro total station and PSD laser target, comprising fiber gyro total station, PSD laser target, computer of automatic guiding system and back-sight reference prism. The fiber gyro total station comprises fiber gyro north seeker, laser total station and ARM processor. The laser total station emits laser to the back-sight reference prism and PSD laser target so as to measure the distance from fiber gyro total station To back-sight reference prism and PSD laser target. The back-sight reference prism reflects laser emitted by laser total station according to the incident direction. The ARM processor calculates coordinates of laser total station, horizontal azimuth angle of emitted laser and coordinates of laser target. PSD laser target reflects laser emitted by laser total station according to the incident direction and measures the angle between the axis and incident laser and rolling angle and sloping angle of shield machine. The computer of automatic guiding system calculates the horizontal azimuth angle of shield machine. The invention is provided with high accuracy, automatic seeking north and convenient operation. It can be applied in automatic guiding in underground working device such as shield machine.
Owner:BEIHANG UNIV

Combined type device and method for precisely and dynamically measuring spatial position and posture

InactiveCN101608920AIncrease sampling rateOvercoming the weakness of measurement errors accumulating over timeAngle measurementOptical rangefindersTime delaysMeasuring output
The invention discloses a combined type device and a method for precisely and dynamically measuring spatial position and posture. The device comprises an inertia measuring unit and a total station measuring unit which are connected with a data acquisition and processing unit respectively; and the data acquisition and processing unit is connected with a computer. The inertia measuring unit measures the acceleration and the angular velocity of a target solid conjugant; a total station measures and calculates the position and the posture of the target solid conjugant; the acceleration, the angular velocity and the position and the posture are sent to the computer through the data acquisition and processing unit; according to data arrival time, measurement time delay and an inertia measurement solution principle of the total station, the computer adopts a time backtracking algorithm and KALMAN wave filtering, merges and processes two kinds of data, removes the measurement time delay of the total station and resolves out the optimally-estimated position and the posture of the target solid conjugant. The combined type device and the method improves the stability and the real-time position and posture measuring precision of the prior total station measuring system, enriches the measuring output information of the prior dynamic tracking measurement system and meets the real-time measuring requirement of high precision, high sampling rate and long-time operation of a large-scale device on large-dimension space.
Owner:NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI

Non-horizontalization free established station for total station and project measurement method of non-horizontalization free established station

The invention discloses a non-horizontalization free established station for a total station and a project measurement method of the non-horizontalization free established station. The invention belongs to the technical field of project measurement. The non-horizontalization free established station for the total station and the project measurement method are characterized in that (1) the total station is in a non-horizontal working gesture; the total station is operated to measure a slope distance, a horizontal angle and a zenith distance of at least thee geodetic datums; (2), according to the obtained measurement information of geodetic datums, a three-dimensional geodetic coordinate and gesture information of a total station point are obtained by using the method of non-horizontalization free established station for the total station; (3) the total station measures a point to be tested by the non-horizontal working gesture, and obtains the three-dimensional geodetic coordinate of the point to be tested through the measurement method of a non-horizontalization project of the total station. The invention solves technical problems of establishing a station, lofting and measuring only after flattening the total station in advance during project measurement, realizes the non-horizontalization free established station for the total station and project measurement of the non-horizontalization free established station; operation is simple; efficiency of field lofting and measuring works can be obviously improved.
Owner:JIANGXI EVERBRIGHT MEASUREMENT & CONTROL TECH CO LTD

Total-station spatial measuring and positioning method based on optoelectronic scanning and ultrasound distance measurement

ActiveCN102636774ASimple measuring principleMeet various needs in practical applicationsPosition fixationSonificationWorking environment
The invention discloses a total-station spatial measuring and positioning method based on optoelectronic scanning and ultrasound distance measurement and belongs to the technical field of big-size three-dimensional coordinate measurement in the industrial scene. The method comprises the following steps that a lunching base station and a receiver are built; the position of an ultrasound lunching module on the lunching base station is calibrated; the positions of a first ultrasound receiving module and a second ultrasound receiving module on the receiver are calibrated; the horizontal angle alpha and the pitch angle beta of a photodiode are measured with a photoelectric scanning method; through an ultrasound distance measurement method, the distance between the first ultrasound receiving module and the ultrasound lunching module and the distance between the second ultrasound receiving module and the ultrasound lunching module are measured; and the space coordinate of the photodiode is calculated. According to the total-station spatial measuring and positioning method based on optoelectronic scanning and ultrasound distance measurement, the total-station spatial measuring and positioning is realized only by a single lunching base station under certain specific working environment, the measurement principle is simple, and various requirements in the practical application are satisfied.
Owner:TIANJIN UNIV
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