39results about "Permanant marks" patented technology

The present disclosure relates to a device for calibrating a laser level, including a base platform configured to support the laser level that is to be mounted at a first position of the base platform, a laser detector arranged at a second position of the base platform and configured to receive a laser, and an optical path extension device arranged at a third position between the laser level and the laser detector and configured to receive the laser emitted by the laser level and project the laser to the laser detector after the laser is adjusted by the optical path extension device. With the optical path extension device, a physical distance between the laser level and the laser detector can be optically extended.

The present invention relates to the field of underwater positioning technology, and specifically to a landmark device that can be positioned underwater, comprising: a mounting seat, the upper end of which is fixedly connected to a landmark body, the upper end of which is fixedly connected to a signal transmitter; a fixing mechanism, the fixing mechanism comprising a first one-way bearing and a second one-way bearing, a groove is provided at the lower end of the mounting seat, a T-shaped plate is slidably connected to the inner wall of the groove, an insertion block is fixedly connected to the lower end of the T-shaped plate, and a limiting ring is fixedly connected to the inner wall of the groove near the notch. The present invention is provided with a fixing mechanism, which can intermittently drive two tooth plates to move downward, and then drive the insertion block to move downward into the soil in the water through the T-shaped plate, so as to fix the position of the landmark body, thereby avoiding the phenomenon in the prior art that the landmark is placed in the water only by the weight of the landmark, so that the landmark will follow the flow of the water, thereby causing the initial position of the landmark to change, affecting the measurement result.

The application discloses a method for designing and calibrating a detection site of an unmanned aerial vehicle based on high-precision positioning, comprising the following steps: S1, setting a main control point and a standard point; S2, performing static relative measurement and free station measurement, and outputting a reference coordinate data set; S3, introducing a Boolean sand model, calculating accurate three-dimensional coordinate values of the main control point, evaluating residual errors, and generating reference data of the main control point; S4, performing multi-station redundant observation on the standard point, and outputting accurate coordinate data of the standard point; S5, constructing an improved Hamilton Monte Carlo-based Bayesian inference model, introducing a Gaussian mixture prior guide factor, calculating a posterior probability distribution and an extended uncertainty, and generating a calibration data report; and S6, performing independent measurement and comparative analysis, and outputting a final calibration result. The application realizes accurate measurement of point coordinates of a detection site and scientific evaluation of uncertainty, and effectively improves the reliability and robustness of value traceability.

A method including: recording a first image of a first field region; automatically treating a plant within the first region in-situ based on the first image; automatically verifying the plant treatment with a second image of the first region; and automatically treating a second region concurrently with treatment verification.

The invention discloses a benchmark protection device, and relates to the technical field of benchmark protection, the benchmark protection device comprises a shell assembly, the shell assembly comprises a protection shell, the lower end of the protection shell is provided with a protection shell gasket, the upper end of the protection shell is provided with a cover plate, and a cover plate gasket is arranged between the protection shell and the cover plate; the opening and closing assembly comprises a connecting plate, a first rotating rod, a second rotating rod, a spring, a clamping piece, a pressing piece and a limiting piece; the box staff fixing assembly comprises a benchmark, a ball bearing and a box staff rotating bin. The beneficial effects of the invention are that through the cooperation of the cover plate and the opening and closing assembly, the protection shell is closed and opened, under the action of the clamping piece, the cover plate is ensured to be closed tightly, and the cover plate is kept open stably without affecting the measurement under the action of the internal force of the opening and closing assembly during opening; the benchmark is protected through the protective shell, the benchmark is prevented from being corroded and damaged by rainwater, dust and the like, durability of the benchmark can be better guaranteed, the telemeter rod fixing assembly is matched, a telemeter rod can be better fixed during measurement, manpower is saved, and meanwhile the measurement accuracy can be improved.

To provide a boundary marker stake that includes a convergence part formed at a tip portion of the stake so as to enable cutting, allows the length of the stake to be shortened by cutting the stake along the convergence part, and is usable even when a soil layer is shallow.SOLUTION: A boundary marker stake includes: a leg body 1 embedded in the ground: and a head body 2 exposed above the ground to indicate a boundary point or a survey point, the leg body having a convergence part 6 formed at a predetermined region so that the outer shape gradually decreases toward a forward side, the convergence part 6 having a reinforcing rib 7 to provide a structure that becomes easy to break in a specific direction alone, the length of the stake being made adjustable by cutting the leg body along the convergence part 6.SELECTED DRAWING: Figure 1

Disclosed is an aircraft structural element (100) configured to be assemblable into an aircraft structure, the aircraft structural element (100) comprising an external surface (105) having an integrally formed photogrammetry target (182). A photogrammetry system (180), aircraft assembly system (10) and method of assembly based on the same are also disclosed.

An aircraft structural element configured to be assemblable into an aircraft structure, the aircraft structural element including an external surface having an integrally formed photogrammetry target. The aircraft structural element, the integrally formed photogrammetry target and the external surface are formed of a common material composition and are a single piece structure. A photogrammetry system, aircraft assembly system and method of assembly of the aircraft structural element into the aircraft structure.

The disclosure generally pertains to systems and methods for use of a vehicle to conduct a site survey. An example method can include receiving navigation guidance to move a vehicle along a pre-defined path on a property for executing a site survey operation of the property. The site survey operation can include a staking procedure performed by a robotic arm attached to the vehicle, an image capture procedure performed by use of a camera in the vehicle, and / or a subterranean scanning procedure for detecting a buried object. In an example implementation, the staking procedure can include inserting at a first location on the property, a stake having affixed thereon, a barcode label. A barcode scanner can be used to read the barcode label for obtaining information associated with an object present at the first location.

An aircraft structural element 100, configured to be assembled into an aircraft structure, comprising an external surface 105 having at least one integrally formed photogrammetry target 182. A photogrammetry system comprises the aircraft structural element, a photogrammetry imaging device 184, and a photogrammetry processor 186. The imaging device and processor determine a position or orientation of the target. A sensor 142, 144 may be disposed on or within the element to sense a parameter during assembly and output a signal indicative of the parameter. The target may comprise a protruding and / or recessed portion which may be adjacent one another on the external surface. A method of assembling the aircraft structure comprises determining a position or orientation of the target using the photogrammetry system, determining a position or orientation of the element based on the position or orientation of the target, and performing assembly based on the position or orientation of the element.

Two-dimensional targets, such as AprilTags, are used as control points. AprilTags can be used as cost effective alternatives to traditional prism targets without losing accuracy. AprilTags can be placed precisely around a construction site as "permanent" survey control points, like positioning reflector targets. A robotic total station, equipped with a camera sensor, can image the two-dimensional targets to efficiently resection itself.

A method including: recording a first image of a first field region; automatically treating a plant within the first region in-situ based on the first image: automatically verifying the plant treatment with a second image of the first region; and automatically treating a second region concurrently with treatment verification.

Provided is a surveying instrument that reduces the burden of a centering work on a worker. A surveying instrument (1) capable of irradiating a spotlight (SL) as visible light for centering toward a position below a vertical axis of a surveying instrument main body (12) is configured such that that an irradiation shape of the spotlight (SL) is a toric shape. When visible light for centering which passes through a center point (O) of the surveying instrument (1) and is projected on a position right below the surveying instrument (1) is projected in a toric shape having a hole opened at a center like a donut shape, both of an inner circle and an outer circle can be recognized, and an outer shape of a measuring object on which a target point is set can also be used for alignment with the target point, so that many guides are provided, and it is easier for a worker to align the toric shape with the target point than a point shape, so that the burden of a centering work on the worker is reduced.

To provide a surveying instrument that reduces a burden of centering work on a worker.SOLUTION: In a surveying instrument (1) capable of irradiating with, spotlight (SL) as visible light for centering toward a position below a vertical axis of the surveying instrument main body (12), the spotlight (SL) is configured that an irradiation shape is an annular shape. When visible light for centering, which passes through a center point (O) of the surveying instrument 1 and is projected on a position right below the surveying instrument (1), is projected in an annular shape having a hole opened at a center like a doughnut, both of an inner circle and an outer circle can be recognized, an outer shape of a measuring object having a target point can be used for target point alignment, there are many marks, and it is easier for a worker to align the annular shape with the target point than a point shape, so that a burden of centering work on the worker is reduced.SELECTED DRAWING: Figure 1

A surveying instrument capable of irradiating a spotlight as visible light for centering toward a position below a vertical axis of a surveying instrument main body is configured such that that an irradiation shape of the spotlight is a toric shape. When visible light for centering which passes through a center point of the surveying instrument and is projected on a position right below the surveying instrument is projected in a toric shape having a hole opened at a center like a donut shape, both of an inner circle and an outer circle can be recognized, so that many guides are provided, and it is easier for a worker to align the toric shape with the target point than a point shape, so that the burden of a centering work on the worker is reduced.

A setting-out method, a measurement system (500), and a computer readable medium. The setting-out method is used for the measurement system (500). The measurement system (500) comprises a navigation module (1, 501), a laser ranging module (2, 502), and a centering rod (6, 503). The navigation module (1, 501) comprises an inertial measuring unit and a GNSS positioning unit. The setting-out method comprises: acquiring projection coordinates of a position vector of an antenna phase center in a first coordinate system by means of a GNSS positioning unit; acquiring distance information between a laser emission point and a laser irradiation point; on the basis of the projection coordinates and the distance information, calculating projection coordinates of the laser emission point in the first coordinate system and projection coordinates of the laser irradiation point in the first coordinate system; further calculating a corresponding setting-out error; and adjusting the centering rod (6, 503) on the basis of the setting-out error.

An apparatus monitors positions on an external object having at least one beacon (1 (i), i = 1, 2, I) attached to it. The apparatus has an image sensor (1 1), a lens system (13) and a processing unit (9). The lens system (13) receives at least one light beam (5(i)) transmitted from the at least one beacon (1 (i)) and transfer the at least one light beam (5(i)) to the image sensor (1 1 ). The image sensor (1 1) forms image data. The processing unit (9) identifies the at least one beacon (1 (i)) within the image data based on the at least one light beam (5(i)), determines current location data of the at least one beacon (1 (i)) based on the image data, compares the current location data with former location data of the one or more beacons (1 (i)) as stored in a memory (15) and determines whether the object has moved relative to a fixed reference frame based on the comparison.

A system for monitoring survey reflectors arranged at a plurality of locations on an object, having:a camera, including:one or more light sources arranged to illuminate a field in space corresponding to at least 10% of a field of view of the camera, preferably the whole field of view;an image sensor receiving light beams from reflections of the beam by the survey reflectors and providing data;a body with an optical entry system, the image sensor located on a first side and the light source on a second side of the body;anda processing unit processing the data.The processing unit is configured to determine locations of the survey reflectors from the image sensor data and detect movement of the survey reflectors based on a comparison of the determined locations with previously determined locations.

The invention relates to the technical field of building construction of equipment installation or maintenance positioning control of a linear production line, in particular to a permanent positioning control construction method of the linear production line, which comprises the following steps: S1, drawing a central standard plate control point location and elevation standard plate control point location distribution map; s2, lofting a central target board control point position in the factory area, marking the central target board control point position with paint, and performing elastic coating on a cross mark; s3, a round pit is drilled, and a center target plate is embedded; s4, marking the top surface of the central target plate according to the central target plate control point position in the drawing; s5, installing the elevation standard plate according to the original elevation standard plate control point position in the drawing; and S6, after construction of the center standard plate and the elevation standard plate is finished, inspection is conducted, and after it is ensured that errors are avoided and the precision requirement is met, production line equipment is installed on the basis of the center standard plate and the elevation standard plate. The device has the technical effects that the device installation precision is high, and a control basis for device maintenance can be provided during device maintenance.

A high-precision marker, which is easy to manufacture, has a base material layer, a first layer which is laminated onto one surface of the base material layer, and which is observed in a first color, and a second layer which is partially laminated onto the first layer, is observed in a second color different from the first color, and partially conceals the first layer, wherein the first layer is observable in a region in which the second layer is not laminated, and the second layer is formed by a resist material.

A lofting method, a multifunctional measurement apparatus and a computer-readable medium. The lofting method is used for a multifunctional measurement apparatus (500). The multifunctional measurement apparatus (500) includes a navigation module (1, 501) and a laser ranging module (2, 502), wherein the navigation module (1, 501) includes an inertial measurement unit. The lofting method includes: calculating plane projection coordinates of a laser irradiation point in a first coordinate system (S101); acquiring plane projection coordinates of a point to be lofted in the first coordinate system (S102); calculating a lofting error in a second coordinate system on the basis of the obtained coordinates (S103); and adjusting the position of the laser irradiation point on the basis of the lofting error until the laser irradiation point coincides with the point to be lofted within a lofting error range (S104). In the lofting method, a laser ranging module (2, 502) is used instead of a centering rod, so that a user can carry a multifunctional measurement apparatus and operate same conveniently, and it is only necessary to move a laser irradiation point in situ to implement long-distance lofting.

1. A system for monitoring survey reflectors positioned at multiple locations on an object, the system comprising: a camera including one or more light sources positioned to illuminate a field in space corresponding to at least 10% of the camera's field of view, preferably the entire field of view, an image sensor receiving a light beam from reflection of the beam by the survey reflector and providing data, a body with an optical entry system, the image sensor being positioned on a first side of the body and the light source being positioned on a second side of the body, and a processing unit for processing the data. The processing unit is configured to determine a position of the survey reflector from the image sensor data and to detect movement of the survey reflector based on a comparison of the determined position with a previously determined position.

A painting assembly for a distance measuring wheel includes: a main body; a connecting device disposed on the main body and configured to connect the paining assembly to an arm member of the distance measuring wheel; a paint can fixing device disposed on the main body and configured to fix a paint can installed to the painting assembly; a communication device configured to receive a control signal for controlling a driving device; and the driving device connected to the main body and configured to: in response to the control signal, control a paint spraying state of the paint can.

To provide a marker which is easily manufactured and has high accuracy.SOLUTION: The relative position calculation method is a relative position calculation method using a marker 1 including a base material layer 10, a first layer 20 laminated on one surface of the base material layer 10 and observed in a first color, and a second layer 30 partially laminated on the first layer 20 and observed in a second color different from the first color and partially concealing the first layer 20, the first layer 20 being observable in a region where the second layer 30 is not laminated, the second layer 30 being formed of a resist material, the relative position calculation method including a step of photographing the marker attached to an object to be measured by a camera, and a step of calculating a relative positional relationship between the camera and the marker by a control unit.SELECTED DRAWING: Figure 1

A system for monitoring survey reflectors arranged at a plurality of locations on an object, having: a camera, including: - one or more light sources arranged to illuminate a field in space corresponding to at least 10% of a field of view of the camera, preferably the whole field of view; - an image sensor receiving light beams from reflections of the beam by the survey reflectors and providing data; - a body with an optical entry system, the image sensor located on a first side and the light source on a second side of the body; and a processing unit processing the data. The processing unit is configured to determine locations of the survey reflectors from the image sensor data and detect movement of the survey reflectors based on a comparison of the determined locations with previously determined locations.

To provide a technique capable of printing unevenness-level information on an inspection surface in an intuitively and visually recognizable manner.SOLUTION: An unevenness level inspection device 1 is provided with a target T whose distance from an inspection surface is known, a traveling unit 21 for traveling on the inspection surface, a first marker 23 for marking information onto the inspection surface, and a control unit 10 for controlling the first marker 23. The control unit 10 calculates the height of the inspection surface at a measurement position of the target T based on three-dimensional position coordinates of the target T input every time the unevenness level inspection device 1 travels a predetermined distance, a first marker 23 is controlled so as to mark unevenness level information indicating the difference between the height of the inspection surface and the reference height at a corresponding position of the inspection surface, and the unevenness level information is marked in different colors according to the level of the magnitude of the difference between the height of the inspection surface and the reference height.SELECTED DRAWING: Figure 2