316results about "Profile tracing" patented technology

The invention relates to the technical field of bridge pier scour monitoring, discloses an air-water-shore cooperative overwater float type bridge pier scour monitoring system, and belongs to the technical field of bridge safety monitoring. According to the system, an integrated framework is formed by a buoy platform, a shore-based cooperative monitoring station and a cloud monitoring platform. The buoy platform is fixed to a pier through a mooring lead, the underwater sonar module of the buoy platform can scan the terrain of a riverbed at multiple angles, and the overwater module integrates high-precision positioning and video monitoring. The shore-based station is provided with a laser scanner and a high-definition camera to monitor the overwater structure and the macroscopic environment of the pier. The cloud platform serves as a control center, converges the multi-source data of the buoys and the shore stations through a communication network, carries out time sequence correlation and fusion analysis, and dynamically evaluates the scour pit development and the bridge pier structure state. According to the invention, the limitation of a single monitoring mode is broken through, collaborative acquisition and intelligent fusion of air, water and shore data are realized, the comprehensiveness, accuracy and early warning capability of monitoring are remarkably improved, and reliable guarantee is provided for safe operation of bridges.

The invention relates to a three-dimensional digital contour detection system for a tunneling roadway, and belongs to the technical field of roadway contour measurement. The system comprises a data acquisition module used for acquiring original point cloud data through a three-dimensional scanning device; the data preprocessing module is used for preprocessing the original point cloud data to obtain actual point cloud data, constructing design point cloud data and aligning the actual point cloud data with the design point cloud data to obtain standard point cloud data; the over-break and under-break area division module is used for dividing over-break and under-break areas according to the design point cloud data; the plane screening module is used for fitting a plurality of random planes and screening out a plurality of initial candidate planes; the roadway size calculation module is used for classifying five actual planes and calculating the roadway size of the tunneling roadway based on the five actual planes; and the visualization and storage module is used for visually displaying the roadway contour information. According to the invention, the error of tunneling roadway contour measurement is reduced, and the efficiency and real-time performance of roadway contour construction are improved.

The invention discloses a tunnel cross-sectional image analysis method based on image processing, and aims to solve the problems that a surface image is not clear in correspondence with a transient seismic wave method, a geological radar and a resistivity imaging section space, and anomalies at a certain distance in front are difficult to map to a tunnel face. According to the method, anisotropic reforming is carried out by adopting a Fourier neural operator, cross-modal Transform registration of a micro attention mask based on sector geometry, curve mileage and section polar coordinate position coding is combined, analytic geometry mapping and uncertainty propagation are matched, tunnel face structure traces and water seepage texture evidences are fused, and the tunnel face structure traces and the water seepage texture evidences are combined. The technical effects of accurate positioning of abnormity on the tunnel face, position confidence range estimation, risk grading early warning, stripe artifact suppression, abnormal boundary reservation and output of structured results of mileage stake numbers, azimuth angles, distance intervals and the like are achieved.

The invention relates to the technical field of channel monitoring and underwater topography analysis, in particular to a multi-beam sounding data driven underwater topography profile extraction method and device and a medium, and the method comprises the steps: obtaining channel region multi-beam sounding original data, carrying out the standardized preprocessing, and outputting a sounding data set; performing spatial interpolation and vectorization processing on the sounding data set to generate channel geological data, and issuing the channel geological data as a similar three-dimensional channel bottom graph through a geographic information service platform; generating a profile path, and generating interpolation points according to a preset interval; constructing a spatial index structure based on the sounding data set, and establishing an adjacent sounding point retrieval channel for each interpolation point; and in allusion to the same profile path, acquiring multiple periods of sounding data, calculating water depth difference, and dynamically and visually displaying an abnormal movement phenomenon by using a broken line graph. According to the method, efficient extraction, dynamic comparison and automatic early warning of the multi-period sounding data can be realized, and the analysis efficiency and accuracy of the channel topographic change are remarkably improved.

The invention discloses a concrete wall full-section deformation monitoring device and method, and relates to the technical field of engineering structure health monitoring, and the device comprises an integrated measurement unit, a passive stable characteristic target group and a processing unit. The integrated measuring unit is composed of an area array solid-state laser radar and a high-resolution binocular vision camera which are rigidly and fixedly connected, and is used for synchronously collecting three-dimensional point cloud and two-dimensional images of a wall and an environment. The target group is arranged on an independent stable object near the wall body; the processing unit identifies coordinates of the target group based on laser radar data, establishes a world coordinate system, calculates self pose drift of the measuring unit by periodically detecting position change of the target, and performs coordinate correction on a wall surface relative displacement field obtained by visual calculation by using the drift distance; and finally, outputting a full-section absolute deformation field under a world coordinate system. According to the invention, high-precision monitoring of full-field continuous deformation of the concrete wall is realized, and the reliability and comprehensiveness of structural health monitoring data are improved.

A map generation apparatus including an in-vehicle detector detecting a situation around a subject vehicle and a microprocessor. The microprocessor is configured to perform extracting feature points from detection information detected by the in-vehicle detector, selecting first feature points from the feature points, calculating three-dimensional positions of the first feature points included in each of a plurality of the detection information while estimating a position or posture of the in-vehicle detector based on the plurality of the detection information, and generating a map including information of the three-dimensional positions of the first feature points. The microprocessor is configured to perform the selecting including selecting the first feature points other than a feature point of a predetermined landscape feature from the feature points, and the generating including adding information on a position of a second feature point not selected among the feature points to the map.

Described are systems and techniques for road surveying. Information indicative of a sequence of target road sections each comprising one or more road segments can be used to configure a vehicle to perform a road survey by traveling each target road section of the sequence. Data acquisition can be started from onboard sensors of the vehicle based on detecting a first trigger event where a current position of the vehicle is within a configured threshold distance from a first target road section of the sequence. Respective road survey data can be obtained for each road segment in each target road section of the sequence, and can comprise a subset of acquired data obtained from the onboard sensors between a corresponding start and end point automatically determined for the respective road segment based on detecting the occurrence of trigger events corresponding to the current vehicle position and / or heading.

The invention relates to an unmanned aerial vehicle towed body positioning attitude measurement method based on binocular vision positioning, and relates to the technical field of computer processing, and the method comprises the following steps: S01, constructing a measurement system which comprises an unmanned aerial vehicle and a towed body connected with the unmanned aerial vehicle through a cable; the unmanned aerial vehicle carries a GNSS module, an IMU module and a binocular camera, and the upper surface of the towed body is provided with a coding pattern and carries a sonar sensor; s02, establishing a towed body coordinate system by taking the acoustic center of the sonar sensor as an original point, obtaining three-dimensional coordinates of feature points on the towed body in the towed body coordinate system, and generating a three-dimensional space model operation simulation model of the towed body; and S03, the binocular camera is calibrated. According to the invention, the problem of underwater topographic survey of a near-shore high-flow-velocity turbid water area is solved, and high-efficiency, low-cost and high-precision surveying and mapping operation is realized.

To provide a method, a device and a system capable of measuring the displacement of the inner space of a tunnel at high speed.SOLUTION: 1) In the initial measurement step, the unevenness feature of the target 100a to 100e is acquired. In addition, the point cloud of the inner surface of the tunnel including the target 100a to 100e is obtained as the first point cloud, and the unevenness feature is extracted from the first point cloud to obtain the first position information of the target 100a to 100e. In the displacement measurement step (2) performed after a predetermined time elapses, a search region including a position specified based on the first positional information and having a larger area than the targets 100a to 100e is set, point cloud of the search region is acquired, and the targets 100a to 100e are extracted from the point cloud of the search region based on the unevenness feature information to acquire the second positional information. Then, the displacement of the inner space of the tunnel is measured based on the difference between the first position information and the second position information.SELECTED DRAWING: Figure 17

A reel assembly for an agricultural header includes a reel arm configured to couple to a frame of the agricultural header and configured to support a reel of the reel assembly. The reel assembly further includes a device mounting assembly movably coupled to the reel arm and configured to support a device that is configured to monitor a terrain feature. The device mounting assembly is configured to move between an extended position and a retracted position relative to the frame to move the device between a first position corresponding to the extended position of the device mounting assembly and a second position corresponding to the retracted position of the device mounting assembly. The device mounting assembly is configured to enable the device to monitor the terrain feature at the first position and the second position.

The application discloses a kind of automatically generated river section and feature extraction method, comprising: by specified numerical value, along the river center line / longitudinal axis line generation point, and point is set to number along river direction, and adjacent line recursive generation center line is given to these line number;According to the order of numbering, traverse point, and make perpendicular to its adjacent line;Generation perpendicular segment and the intersection of adjacent line, and these intersection points are given the numbering value consistent with point;With intersection point along the direction of existing perpendicular segment, continue to make perpendicular to its adjacent line;Respectively, the intersection of perpendicular segment and adjacent line is solved, and these intersection points are given the numbering consistent with the starting point of perpendicular segment;Until perpendicular segment reaches river boundary;According to center line number and the intersection point number of generated perpendicular segment, line segment is generated, and automatic section establishment is completed;Information extraction point is generated by the generated section line;Extract section two / three-dimensional grid data information.The application realizes the automatic section generation and attribute extraction of river with relatively severe width and curvature variation.

The invention belongs to the technical field of tunnel construction deformation monitoring, and particularly discloses a tunnel construction surrounding rock deformation and support structure deformation synchronous monitoring method, which comprises the following steps of: arranging monitoring point pairs of surrounding rock and support structures on a tunnel physical monitoring section, synchronously acquiring deformation data by using the monitoring point pairs, and then executing graded time synchronous verification; through a dual synchronization verification mechanism, the problem of time misalignment is effectively eliminated, and it is also ensured that data used for collaborative deformation analysis has real and reliable time sequence consistency in the physical sense. Meanwhile, the surrounding rock displacement and support stress response curves of the same monitoring point pair are superposed under a unified time axis on the basis of completing time synchronism verification, the coupling relation between the morphological characteristics and the time sequence is comprehensively analyzed, the deformation cooperation state at the point is accurately judged, refined deformation behavior analysis based on the physical position is achieved, and the accuracy of deformation behavior analysis is improved. The early-stage precursor of collaborative degradation can be captured, and the timeliness of risk early warning is remarkably improved.

To grasp a state of an environment where a plurality of trees such as forests exist while reducing time and cost required for work.SOLUTION: The tree analysis system 110 according to the embodiment analyzes a state of a tree by using three dimensional point group data 120 obtained by forest measurement. The processing device 111 determines the position of the tree and the height of the tree indicated by the three dimensional point group data 120 on the basis of continuity along the height direction of the plurality of points indicated by the three dimensional point group data 120. The processing device 111 determines a crown portion of the tree based on the position of the tree, and calculates a crown area based on the crown portion. The processing device 111 calculates the state of the tree based on the tree height and the tree crown area.SELECTED DRAWING: Figure 18

The present application relates to the technical fields of shaft section size measurement, and particularly relates to a laser measurement device for mine shaft section, which comprises a supporting cylinder, a plurality of clamping assemblies outside the supporting cylinder, a supporting lower ring plate, an inner double-cone ring plate rotatable by a motor drive, a plurality of lasers on the outer wall of the inner double-cone ring plate, a double-ratchet ring in the inner cavity of the inner double-cone ring plate, an upper cover plate assembly movably connected to the inner wall of the double-ratchet ring, one end of the clamping assembly hingedly connected to the upper end of the upper cover plate assembly, and the other end of the clamping assembly slidably connected to the supporting lower ring plate, and the supporting diameter size can be adjusted by the vertical displacement of the clamping assembly through the upper cover plate assembly. The device can rotate the lasers in a rotating manner for rotation measurement during lifting, expand the area of shaft section measurement, prevent dead angles during measurement, and improve the measurement accuracy.

The invention relates to the technical field of tunnel detection, and discloses a laser tunnel section detector which comprises a supporting frame, a mounting table is arranged at the top of the supporting frame, a section detector is connected to the mounting table, an operator carries the section detector to the position, needing to be detected, of a tunnel section, then the section detector is started, and the section detector is started. When vibration generated by construction is transmitted to the position of the supporting frame and the supporting frame moves upwards under the influence of the vibration, the leveling assembly and / or the hydraulic assembly are / is driven to move, the vibration borne by the supporting frame is fully reduced through the hydraulic assembly and / or the leveling assembly, and the stability of the section detector during detection is guaranteed; the support frame is effectively prevented from being influenced by vibration generated by tunnel construction, so that the fracture surface detector vibrates, the contour line scanned by the fracture surface detector easily has large fluctuation, and the detection accuracy is ensured.

The utility model discloses an inter-mountain ranging auxiliary device, which relates to the technical field of geological exploration and comprises a bottom plate and a clamping plate, a partition plate is fixedly connected outside a vertical plate, scale plates are fixedly connected to two sides of the partition plate, a fixing plate is fixedly connected outside the vertical plate, and a driving motor is fixedly connected outside the fixing plate. A rotating rod is fixedly connected to one side of the driving motor, a rotating plate is fixedly connected to the exterior of the rotating rod, a mounting box is fixedly connected to the tail end of the rotating plate, a reading groove is formed in the exterior of the rotating plate, inclined planes are symmetrically formed in the exteriors of the two clamping plates, and a clamping mechanism is mounted between the exteriors of the clamping plates and the inner side of the mounting box; and a quick release mechanism is mounted outside the mounting box. According to the device, rapid and stable installation and convenient disassembly of the distance measuring equipment are achieved through the design of the spring and the slope, the distance between two points in a mountain land is accurately calculated through angle data of the rotating plate and direct reading of the distance measuring equipment, and a safe and efficient distance measuring solution is provided for geological exploration.

The application discloses a tunnel face multi-direction measuring terminal, which comprises a mounting base, an upper shell and a lower shell, the upper shell and the lower shell are both hollow structures, the mounting base is used for connecting a support, the outer side of the mounting base is provided with a first rotating assembly, the first rotating assembly is connected with the lower shell, a battery is arranged in the lower shell, the upper end of the lower shell is provided with a second rotating assembly, the second rotating assembly is connected with the upper shell, a circuit board and at least one laser emitter are arranged in the upper shell, and the circuit board is electrically connected with the battery and the laser emitter respectively. The rotating angle of the laser emitter in the upper shell can be adjusted through the first rotating assembly and the second rotating assembly, so that the position of the laser emitter can be flexibly adjusted according to different measuring environments, and the structured light emitted by the laser emitter can be accurately projected on the tunnel face, thereby ensuring the accuracy of the face measurement.

The utility model relates to the topographic survey field, and discloses a multifunctional topographic survey laser scanning device, which comprises an unmanned aerial vehicle shell, a mounting plate and a detection mechanism, the detection mechanism comprises a fixing plate, a fixing column is fixedly arranged on one side of the lower end of the fixing plate, and a supporting rod is hinged to the lower end of the fixing column. A scanning head is fixedly arranged at the lower end of the supporting rod, a second motor is fixedly arranged at the upper end of the scanning head, a rack fixedly sleeves the output end of the second motor, a shading plate is hinged to the outer side of the scanning head, and a second gear fixedly sleeves the hinged position of the shading plate and the scanning head; a telescopic rod is hinged to the side, away from the fixing column, of the lower end of the fixing plate. According to the utility model, after the second motor is started, as the rack is meshed with the second gear, the position of the shading plate can be adjusted, so that the equipment can normally operate under various illumination and weather conditions, and can obtain reliable data in a complex environment.

Surface detection device, a vehicle comprising a surface detection device, a method to operate a surface detection device, a computer program product and computer-readable memory The invention is concerned with a surface detection device (2) configured to detect a predefined surface property of a surface (8) under a vehicle (1). The surface detection device (2) is configured to perform a surface recognition procedure, wherein the surface detection device (2) is configured to receive data points during an operation of the vehicle (1) and to add at least some of the data points to a buffer of the surface detection device (2), wherein the data points relate to a motion of the vehicle (1). The surface detection device (2) is configured to analyze the buffered data points, when the surface detection device (2) recognizes a stop of the vehicle (1). The surface detection device (2) is configured to detect the predefined surface property of the surface (8), when the analysis of the buffered data points reveals that a predefined surface condition is satisfied.

A system and method for monitoring the shape and size (deformation) of a dyke (7) or similar terrain is disclosed. This method employs the monitoring of positions of settlement plates (12) by an unmanned aerial vehicle UAV (5) in combination with ground based GNSS sensors (11) and barcode markers (3, 4).

The present invention aims to provide an unprecedented, revolutionary method for checking the state of a shaft. [Solution] A method for checking the condition of a vertical shaft 50 involves hanging a long, rigid body 1 having marking portions 1a arranged at equal intervals within the vertical shaft 50 from a position A1 of a specific XYZ coordinate at the upper opening of the shaft 50, and hanging a lightweight, wide measuring tape 5 having length scale portions 5a on its surface within the vertical shaft 50, photographing the vertical shaft 50 with an appropriate photographing means to create an image of the inside of the vertical shaft 50 that includes the marking portions 1a of the long body 1 and the length scale portions 5a of the measuring tape 5, and creating the three-dimensional point cloud 30 using this image, thereby checking changes in the condition of the vertical shaft 50.

A detection system for a work site includes: a three-dimensional data acquisition unit that acquires three-dimensional data of the work site where a work machine operates; a current terrain data storage unit that stores current terrain data created on the basis of the three-dimensional data and time in association with each other; and a determination unit that determines whether or not there is a cliff at the work site on the basis of storage data stored in the current terrain data storage unit.

The invention provides tunnel engineering full-section rapid detection and maintenance integrated equipment, which relates to the technical field of tunnel engineering, and comprises a support assembly, on which a guide rail corresponding to the shape of a tunnel section is arranged; the detection traction assembly is installed on the support assembly, the detection traction assembly is arranged in the guide rail in a sliding mode, and the detection traction assembly is used for rotationally detecting the distance value between the detection traction assembly and the tunnel section and the detection position, corresponding to each distance value, of the detection traction assembly; the maintenance positioning assembly comprises a rotary coarse positioning assembly and a length positioning assembly detachably connected with the rotary coarse positioning assembly, and a locking insertion opening corresponding to the detection traction assembly is formed in the bottom of the length positioning assembly. According to the integrated equipment provided by the invention, a constructor can conveniently finish rapid finishing and maintenance of the protruding part according to the positioned section length indication.

Method for determining a navigation chart (N) for a vehicle (200), comprising: - Received (110), by a vehicle control unit (ECU) (200), from map parts (K), - Determining (120) by the control unit (ECU) of start points (KS) and end points (KE) of the map parts (K), wherein for each of the map parts (K) a start point (KS) and an end point (KE) is determined, - Determine (130), by the control unit (ECU), of corresponding map parts depending on the start points (KS) and end points (KE), - Connect (140), through the control unit (ECU), the corresponding map parts to obtain a navigation map (N), - Operating (150) the vehicle (200) depending on the navigation map (N), - wherein determining (130) includes filling (131) an index table (I), comprising a number (b) of columns and a number (d) of rows.

To appropriately detect both a region type damage and a linear type damage.SOLUTION: A normal paved surface estimating unit 103A that estimates a region-type normal paved surface d11 by fitting to each first section F1 in the point cloud for each scanning line acquired from the point cloud generating device 2, and estimates a line-type normal paved surface d11 by fitting to each second section d21 shorter than the first section F2, and determines region-type damage for each first determination section d11 shorter than the first section F1 based on first deformation displacement amounts that are differences between the point cloud for each scanning line and the region-type normal paved surface; d12, and a linear type damage determination unit F2 that determines linear type damage for each second determination section d21 shorter than the second section d22, based on a second deformation displacement amount that is a differential between the point cloud for each scan line and the linear type normal paved surface 104B.SELECTED DRAWING: Figure 1

The dam bending monitoring section layout method and device provided by the present disclosure comprises the following steps: determining a monitoring section of a target dam according to a riverbed center axis of a riverbed region where the target dam is located; determining a first control point according to a projection intersection point of the riverbed center axis and a dam axis of the target dam on a preset plane; determining at least one second control point according to an upstream side axis in the riverbed center axis and at least one third control point according to a downstream side axis in the riverbed center axis; and performing equipment layout on the monitoring section according to the corresponding layout positions of the first control point, the second control point and the third control point on the monitoring section, so as to perform safety monitoring on the target dam. The method provided by the present disclosure can obtain a bending monitoring section and realize reasonable layout of the monitoring section, so as to realize safety monitoring on the target dam.

The application discloses a kind of stability sustained analysis method of underwater structure tensor information based on memory characteristics;It relates to underwater measurement technical field, the application is measured to underwater structure in N time points, obtains N three-dimensional height difference tensor matrix sequence;With the dimension of one of three-dimensional height difference tensor matrix as benchmark and as benchmark matrix, matrix alignment operation is carried out to other N-1 three-dimensional height difference tensor matrix, and alignment matrix is obtained;Difference is obtained between alignment matrix and benchmark matrix, and point difference matrix is obtained;For each point difference matrix, select edge irregular area and calculate effective selected area value;Based on the three-dimensional height difference tensor matrix obtained in current stage measurement, current memory length and historical effective selected area value set, current effective selected area value is updated by linear transformation and nonlinear activation processing function, the stability change trend of underwater structure is analyzed and early warning is carried out, and the accuracy of underwater structure tensor information stability analysis is effectively improved.

The invention relates to the technical field of water conservancy survey, in particular to an intelligent lofting system and method for an unmanned aerial vehicle. Comprising a terrain acquisition module which is used for acquiring point cloud data of a surveying area from a main unmanned aerial vehicle by a high-precision radar and a wide-angle camera, and constructing a three-dimensional point cloud model for the surveying area according to the point cloud data; the area identification module is used for performing area division on the survey area according to the three-dimensional point cloud model to obtain a plurality of survey sub-areas and identifying sub-area data of each survey sub-area, and the sub-area data comprises area size and area complexity; the task planning module is used for generating a local lofting task according to the generated region complexity of each survey sub-region and a preset lofting point location, carrying out route planning, and sending the local lofting task to the slave unmanned aerial vehicle error correction module; and the local lofting task acquisition module is used for acquiring the acquisition data from the phase range finder and the RTK-GPS module of the unmanned aerial vehicle for executing the local lofting task.

The invention discloses an underwater structure tensor information stability continuous analysis method based on memory characteristics. The method relates to the technical field of underwater measurement, and comprises the following steps: measuring an underwater structure at N time points to obtain N three-dimensional elevation difference tensor matrix sequences; by taking the dimension of one three-dimensional elevation difference tensor matrix as a reference and a reference matrix, carrying out matrix alignment operation on the other N-1 three-dimensional elevation difference tensor matrixes to obtain an alignment matrix; performing subtraction on the alignment matrix and the reference matrix to obtain a point difference matrix; for each point difference matrix, selecting an edge irregular area and calculating an effective selected area value; based on a three-dimensional elevation difference tensor matrix obtained through measurement at the current stage, the current memory length and a historical effective selected area value set, a current effective selected area value is updated through linear transformation and a nonlinear activation processing function, the stability change trend of the underwater structure is analyzed, and early warning is carried out. And the accuracy of underwater structure tensor information stability analysis is effectively improved.