1798results about "Surveying instruments" patented technology

The invention belongs to the technical field of surveying and mapping and geographic information processing, and discloses a geographic entity intelligent identification and reconstruction system based on multi-source surveying and mapping data. The system is composed of a multi-source data acquisition and preprocessing module, a cross-modal feature coding and fusion module, a structural atlas construction and spatial logical reasoning module, a deformable neural modeling module and a physical prior guided collaborative prediction and closed-loop optimization module. According to the method, a cross-modal feature coding and fusion module is arranged, and a modal attention mechanism is introduced to dynamically weight multi-source data, so that heterogeneous information such as a laser point cloud, an inclined image and a multispectral image is fused into a unified coding vector in a high-dimensional space; compared with feature extraction performed by using a static deep network in a comparison file, the method of the invention adopts a minimum residual function to perform modal weight training, has an adaptive feature integration capability, and effectively improves the accuracy of geographic entity recognition and the robustness of boundary segmentation in different scenes.

This invention relates to a system and method for non-invasive detection of gravesites and archaeological features using multimodal remote sensing and machine learning. Remotely sensed datasets, including RGB, multispectral, hyperspectral, LiDAR, and thermal imagery, are orthorectified, mosaicked, and subdivided into tiled image segments. Features are labeled through manual annotation of visible markers and environmental signatures and expanded via iterative augmentation. A supervised pipeline trains computer vision models, such as YOLO-based detectors, in parallel with tabular models derived from spectral indices (NDVI, NDRE), LiDAR elevation derivatives, and thermal anomalies. Inference outputs are cross-validated against thresholded evidence layers to reject false positives and upgraded when spectral, spatial, and thermal evidence align. Validated detections are exported as GIS-compatible layers with confidence scores and metadata. The system provides a scalable, replicable tool supporting archaeologists, Indigenous communities, and planners in cemetery investigations, cultural resource management, and humanitarian searches for unmarked or clandestine graves.

The invention discloses a ground surface settlement and ground fracture monitoring device and method based on distributed fiber sensing (DSS) and fiber bragg grating (FBG). The device comprises a GFRP composite material substrate which stretches across a ground fracture and is fixed on a stable stratum through an anchoring structure, a distributed sensing and temperature measuring optical cable which is pre-embedded in a groove of the substrate, an FBG displacement meter which is connected through a plug-and-play interface, a static force level gauge, an osmometer and other point type sensors, and the data processing unit has the functions of multi-source data acquisition, temperature compensation, data fusion and multistage early warning. According to the method, multi-parameter, distributed and high-precision monitoring of the ground fracture development state is achieved through the steps of field investigation, substrate installation, sensor deployment, system calibration, real-time monitoring and the like. The method has the advantages of high measurement precision, strong anti-interference capability, convenient installation, low cost, capability of predicting the crack propagation trend and the like, and is suitable for long-period safety monitoring of geological disaster frequent areas such as mining areas and landslide areas.

This invention provides a method and system for monitoring surrounding rock deformation in underground coal mines based on three-dimensional point clouds, relating to the field of coal mine safety monitoring. The invention includes the following steps: installing a reference target in the monitoring area and collecting point cloud data; preprocessing the point cloud data, performing coarse registration using the reference target and fine registration using the iterative nearest point algorithm, and generating a triangular mesh model using the Poisson surface reconstruction algorithm; parameterizing the triangular mesh model of the monitoring area into a two-dimensional analysis mesh, calculating the three-dimensional displacement vector of each node, and establishing a displacement field matrix; calculating the displacement gradient tensor based on the displacement vector, deriving the Green-Lagrange strain tensor, and obtaining the full-field strain distribution; recording the strain value of each mesh node, and determining whether an instability warning is triggered based on the relationship between the strain value and the warning threshold; this method can achieve high-precision monitoring of surrounding rock deformation in underground coal mines.

The invention discloses a global tracking and adjusting platform of a total station, and belongs to the technical field of automatic control of measuring equipment. Comprising a translation table, a lifting table, an automatic leveling mechanism, a horizontal rotating structure and a pitching rotating mechanism which are sequentially connected from bottom to top, and a comprehensive control system for controlling the mechanisms to cooperatively operate; the translation platform is fixedly mounted on the tripod; a total station is mounted on the automatic leveling mechanism; according to the global tracking and adjusting platform for the total station, through cooperative operation of the translation platform, the lifting platform, the automatic leveling mechanism, the horizontal rotating structure and the pitching rotating mechanism and in combination with a closed-loop control strategy of a comprehensive control system, automatic leveling and transverse and vertical displacement adjustment of the total station and remote precise control over the azimuth angle and the pitching angle of an eyepiece are achieved; and the eyepiece of the total station is quickly aligned with the center of the target, so that the measurement preparation efficiency and precision are greatly improved.

The invention discloses a real-time dynamic monitoring water conservancy monitoring device and a protection method thereof. The real-time dynamic monitoring water conservancy monitoring device mainly comprises a supporting column, and a windproof mechanism and an anti-hail mechanism are installed on the supporting column; the windproof mechanism comprises folding columns arranged on the left and right of the upper portion of the supporting column, and the two folding columns are hinged to the supporting column. The lower ends of the two folding columns are driven by a folding mechanism to unfold or fold. A water level detector is mounted at the outer end of the first folding column, an anti-hail mechanism is mounted on the second folding column, and a wind speed detector is rotationally connected to the top of the supporting column; the anti-hail mechanism comprises a fixing block, and the fixing block is rotationally connected with the second folding column; an automatic steering clamping mechanism is arranged between the fixing block and the second folding column; when hail falls on the solar panel on the upper portion of the fixing block, the automatic steering clamping mechanism is unlocked, and the fixing block drives the solar panel to rotate from the horizontal state to the vertical state. According to the water conservancy monitoring device with the real-time dynamic monitoring function and the protection method of the water conservancy monitoring device, damage to equipment caused by hail and strong wind can be reduced.

The invention discloses a partial discharge monitoring system for a switch cabinet. The partial discharge monitoring system comprises a microphone array module used for collecting voiceprint signals in the switch cabinet; the voiceprint gene bank is used for storing the partial discharge voiceprint signals according to the types of the partial discharge voiceprint signals in the switch cabinet; the recognition module is used for comparing the collected voiceprint signals in the switch cabinet with the partial discharge voiceprint signals stored in the voiceprint gene pool so as to recognize whether the collected voiceprint signals in the switch cabinet are the partial discharge voiceprint signals or not; the output module is used for outputting the type and pointing information of the partial discharge voiceprint signal when the recognition result of the recognition module is that the voiceprint signal in the switch cabinet is the partial discharge voiceprint signal; and the indication module is used for indicating a partial discharge voiceprint signal source area according to the pointing information output by the output module. According to the invention, the type of the partial discharge in the switch cabinet can be accurately identified, the position where the partial discharge occurs can be accurately indicated, and the identification accuracy and maintenance efficiency of the partial discharge are improved.

The application discloses a design surveying and mapping device for building indoor decoration, relates to the technical field of surveying and mapping devices, and comprises a ring-shaped sliding rail, the inner wall of the ring-shaped sliding rail is rotationally connected with a balance ring, the upper portion of the balance ring is provided with a surveying and mapping instrument body, the lower portion of the balance ring is hung with a gravity box through a chain, further comprising a main shaft arranged on the upper surface of the gravity box and used for driving the surveying and mapping instrument body to intermittently slide along the ring-shaped sliding rail, and a double-layer limiting plate arranged at the bottom of the surveying and mapping instrument body and capable of controlling the surveying and mapping instrument body to always be on the same horizontal plane at any position of the ring-shaped sliding rail. The surveying and mapping instrument body is automatically rotated to replace a surveying and mapping point through a control gear assembly, three-dimensional scanning of indoor dead angles is realized, and through the synergistic effect of the double-layer limiting plate, the balance ring and the gravity box, a gravity self-balancing system is formed, so that the surveying and mapping instrument body is always on the same height and the same horizontal plane when replacing any point for measurement, and the measured value is more accurate and effective.

The invention relates to the technical field of remote sensing surveying and mapping marks, in particular to a remote sensing surveying and mapping target device for land resource surveying and mapping. Comprising a base and an arc-shaped plate hinged to the edge of the lower surface of the base through a hinge block. The end part of the arc-shaped plate is vertically connected with a fan-shaped end cover; a cylindrical storage cavity is defined by the four arc-shaped plates, the four end covers and the lower surface of the base; the inner sides of every two adjacent arc-shaped plates are connected through a sub-target piece. The four sub-target sheets are combined into a whole target sheet after the four arc-shaped plates are unfolded; a fan-shaped groove is eccentrically formed in the base in a penetrating manner; a fan-shaped shielding groove communicated with the fan-shaped groove is formed in the base; according to the target device, the whole target sheet is adhered with the powdery pigment, and the color of the powdery pigment is the color which has the largest contrast with the surrounding environment, so that the whole target sheet in the target device is more prominent at the marked position, subsequent surveying and mapping are facilitated, the subsequent surveying and mapping precision is improved, and the situation of missing measurement is avoided.

The invention relates to the technical field of disaster site surveying and mapping, and discloses a disaster site three-dimensional surveying and mapping system based on an unmanned aerial vehicle. According to the system, an unmanned aerial vehicle is controlled to carry a multispectral sensor to carry out omnibearing scanning on a disaster site, and earth surface deformation data and multiband reflectivity data are collected; carrying out time sequence alignment and noise filtering on the collected data, constructing an initial three-dimensional point cloud through dynamic voxelization processing, and fusing inertial measurement unit data to correct a spatial position; identifying earth surface fault zone edge and elevation mutation features from the point cloud, and dividing geological stability partitions by combining reflectivity data; a self-adaptive octree segmentation algorithm is adopted to carry out multi-level detail division on the stability partitions, the grid resolution is automatically adjusted according to the fault zone density, and a disaster site three-dimensional topological structure is generated; by comparing historical and current three-dimensional data, the earth surface displacement vector and the settlement gradient are calculated, a potential secondary disaster risk area is marked, and accurate assessment and risk early warning of a disaster site are achieved.

The invention discloses a real estate surveying and mapping system and method based on a geographic information system, and the system comprises an unmanned aerial vehicle surveying and mapping unit which is responsible for the collection of large-range images and laser point clouds in the air, and carries out the self-adaptive adjustment of measurement parameters according to the type of real estate. The laser measurement unit correspondingly completes measurement and supplementary measurement of a ground high-precision boundary point and can identify a shielding object in a measurement path and trigger a supplementary measurement signal, and the positioning enhancement unit provides anti-interference multi-source positioning support for the whole system so as to ensure continuous stability of positioning in a complex environment. The data fusion calibration unit unifies coordinates of cross-medium data, synchronizes timestamps and corrects data fusion deviation, the GIS processing unit undertakes core tasks of geographic information management, data processing and surveying and mapping result generation, and the linkage verification unit realizes real-time linkage verification of surveying and mapping data and real estate registration data and identifies ownership boundary conflicts. The system has the advantages of multi-source cooperation, self-adaptive matching, enhanced anti-interference and linkage calibration.

The invention belongs to the technical field of swivel bridge detection, and particularly relates to a swivel bridge horizontal alignment detection device which comprises a mounting seat fixed to the upper end of an abutment, a controller is fixedly connected to the side wall of the mounting seat, and two guide boxes are symmetrically and fixedly connected to the upper side wall of the mounting seat. After the swivel bridge construction is completed, mechanical contact detection is arranged on the abutment, compared with a detection assembly arranged between two swivel bridges which are spaced by four meters, a fixed and accurate mounting reference can be provided for the detection device by means of a stable structural foundation of the abutment, and a detection structure does not need to be arranged between the bridges which are spaced by four meters; the problems of inconvenient operation, large assembly fixing difficulty and the like caused by cross-interval installation are avoided, the bending deformation of the detection rod due to the gravity of the detection rod can be effectively avoided, and the detection precision is guaranteed from the installation reference and the detection structure.

The invention relates to the technical field of space telescope calibration, in particular to a telescope pointing calibration method based on optical fiber interconnection, which comprises the following steps: providing reference light beams in different directions, enabling each lens to correspondingly receive the reference light beams by adjusting the lens pointing, splitting the reference light beams received by the lenses through an optical splitter, and obtaining a split beam; one beam is aligned and corrected through a camera, and the other beam is coupled into an optical fiber to record direction information; the calibration light beams are reversely emitted by the optical fiber through the optical switch and are emitted by the lens, each reference light beam in the known direction is reproduced, a reference light field is formed, the telescope to be calibrated is placed in the reference light field, the miss distance of each calibration light beam in the known direction on the mirror surface of the telescope to be calibrated is measured, and the pointing error is calculated and corrected according to the miss distance. The optical fiber network is used for establishing the unique mapping relation between the space direction and the optical fiber channel, miss distance measurement is carried out through dynamic time-sharing reproduction, and the problems of mechanical accumulative errors and the like existing in a traditional mechanical calibration method are solved.

The invention relates to the technical field of high-precision positioning, in particular to a high-precision six-degree-of-freedom magnetic positioning system and method, and the method comprises the steps: generating a three-dimensional low-frequency magnetic induction field with a preset frequency in a space through a three-axis orthogonal transmitting coil; detecting the three-dimensional low-frequency magnetic induction field through a three-axis orthogonal receiving coil to obtain an induced voltage signal; transmitting the digitized induced voltage signal to a control layer; in the control layer, the position and attitude of the receiver are estimated in real time by using a joint estimation algorithm fusing error state extended Kalman filtering and particle swarm optimization; the error state extended Kalman filtering comprises the steps of constructing a state transition matrix F of a target carrying a receiver, and constructing a process noise covariance matrix Qk and a parameterized measurement noise covariance matrix R of the system through translation acceleration noise sigma a and rotation noise sigma omega. According to the invention, the PSO module is utilized to dynamically and adaptively adjust the key parameters of the ESKF, and high-precision positioning and low-delay response are realized.

The invention provides a multi-dimensional measurement territorial space planning topographic survey device and method, and belongs to the technical field of topographic survey, the multi-dimensional measurement territorial space planning topographic survey device comprises a base, a three-dimensional laser scanner and a ground penetrating radar, multiple groups of first electric cylinders on the base are connected with a supporting table through connecting pieces, and a horizontal detector is arranged at the bottom of the supporting table; a lifting assembly and a moving assembly are arranged above the supporting table, the lifting assembly is detachably connected with the moving assembly through a plurality of locking assemblies, and the three-dimensional laser scanner is installed on the moving assembly. A measuring assembly is arranged between the supporting table and the moving assembly. The ground penetrating radar is installed at the bottom of the supporting table. A controller is arranged above the supporting table, and a battery module is arranged on the base. According to the device, the three-dimensional laser scanner is matched with the ground penetrating radar and the measuring assembly, all-directional detection of the terrain is achieved, the limitation of a single detection means can be effectively broken through, comprehensive and accurate data support is provided for territorial space planning, and the scientificity and feasibility of the scheme are further improved.

The invention provides an unequal-span steel box girder swivel construction measuring point arrangement and monitoring method, and relates to the technical field of steel box girder construction, and the method comprises the following construction steps: S1, installing a reference system; s2, establishing a central reference; s3, monitoring the turning process; s4, carrying out falling position control and fine adjustment; s5, measuring point arrangement and synchronous monitoring; s6, data analysis and feedback control; and S7, confirming and recording in place. According to the invention, through combination of optical reference and multi-point synchronous monitoring, attitude control and alignment fine adjustment of the whole rotation process are realized, and high-precision in-place of the box girder under complex conditions is ensured.

In order to solve the technical problems that a conventional reflector antenna electrical axis direction calibration method is relatively complex and the error is relatively large when the conventional reflector antenna electrical axis direction calibration method is applied to a reflector antenna of which a mechanical axis is not easy to determine, the invention provides a reflector antenna electrical axis direction calibration method. A reference point tool coordinate system measured by a laser tracker and a reference point tool coordinate system tested by a photogrammetry camera are used as transfer, an incidence relation between an antenna coordinate system and a plane scanning frame coordinate system is established, and finally, the plane scanning frame coordinate system is obtained by combining the measured electric axis direction under the plane scanning frame coordinate system. And the electric axis direction under the antenna coordinate system can be obtained. The mechanical axis of the antenna does not need to be tested, a reference mirror is not needed, only one laser tracker and one photogrammetry camera are needed for testing, the testing method is simpler, the testing efficiency is higher, for the antenna of which the mechanical axis is not easy to determine, errors caused by fitting of the mechanical axis are avoided, and the testing precision is improved. The electric axis obtained by the method is more accurate in pointing.

The application discloses a tunnel laser drilling device and relates to the technical field of tunnel drilling. The device comprises a first positioning device for laser positioning of a top hole, a second positioning device for laser positioning of a side wall hole, an auxiliary arm drilling device, a work platform for rotary and lifting movements, and a control device. The auxiliary arm drilling device is used for drilling operation of the top hole and the side wall hole. The first positioning device, the second positioning device, the auxiliary arm drilling device, and the work platform are all connected with the control device. The device can realize quick and accurate positioning and drilling operation, and is also beneficial to reducing the labor intensity of operators.

The tunnel intelligent drilling robot comprises a mechanical arm and a connecting base fixedly arranged at the tail end of the mechanical arm, the connecting base is connected with an electric hammer mounting support, an electric hammer is fixedly mounted in the electric hammer mounting support, and a drill bit of the electric hammer extends out of the electric hammer mounting support in the axial direction; and an elastic buffer assembly is arranged between the connecting seat and the electric hammer mounting bracket and is used for absorbing rigid collision during drilling. The device has the beneficial effects that the service life of the device can be prolonged, the drilling precision is guaranteed, and automatic and high-precision drilling is achieved based on visual perception.

The invention relates to the technical field of land surveying and mapping, in particular to a land surveying and mapping field acquisition system based on a mobile terminal, which comprises a hardware resource scheduling layer, a high-precision positioning processing engine, a field operation interaction engine, a real-time data quality verification module, an off-line and on-line asynchronous collaborative system and a multi-source heterogeneous data encapsulation center. According to the system, differential correction data and inertial navigation data are fused by using a positioning engine to realize centimeter-level positioning; executing geometric topology check and spatial precision evaluation through a verification module; and realizing incremental synchronization of end cloud data by adopting an asynchronous collaborative system. The invention aims to solve the problems that surveying and mapping depend on special hardware and the working continuity is poor in a weak network environment. By adopting the technical scheme, high-precision and high-reliability field acquisition is realized, the deployment cost is remarkably reduced, and the operation efficiency and the data quality are improved.

The invention discloses an unmanned aerial vehicle landing system and method based on target platform attitude correction, and relates to the field of unmanned aerial vehicle landing. Capturing information, corresponding to the same moment of capturing timestamps, from target laser emitting devices which are arranged in a non-collinear mode is selected through a processing unit to serve as an effective data set; performing dynamic reference correction on the original orientation angle of each laser emitting device based on the attitude angle of the target platform at the target moment to obtain a corrected orientation angle, and further performing dynamic reference correction on the original orientation angle of each laser emitting device based on each corrected orientation angle and the spatial position of each target laser emitting device. And the three-dimensional position of the unmanned aerial vehicle relative to the target platform under the ground horizontal reference system is solved. According to the mechanism, laser pointing information is unified to a stable reference system through attitude correction, the coupling influence of platform rolling and pitching disturbance on the positioning reference is fundamentally eliminated, and the problem of positioning distortion caused by the fact that the reference shakes along with the platform in a traditional movable platform laser guiding system is effectively solved.

The invention provides a ground laser positioning mountainous area multi-machine lifting cooperative control method and system, and relates to the technical field of cooperative control, and the method comprises the steps: 1, calculating a first real-time pose of an aircraft through a laser positioning signal transmitted by a laser positioning base station; according to the image data of the three optical identification points, calculating spatial three-dimensional coordinates of the three optical identification points to define a spatial geometric curved surface patch, and decomposing the curved surface patch into a strong signal manifold and a weak signal homotopy group; 2, taking the optical identification point of the central point of the upper edge of the front end surface of the load structure as a spatial reference origin, and connecting the two optical identification points of the left vertex and the right vertex of the lower edge of the rear end surface to form a first spatial vector and a second spatial vector; through laser positioning signal partitioning, load pose multi-source fusion optimization and dynamic compensation control of the Lyapunov potential function, the method adapts to signal shielding and attenuation scenes of mountainous complex terrains, inhibits load swing, reduces the risk of obstacle scraping and collision, and improves the safety of multi-machine lifting.

The invention relates to the technical field of remote sensing surveying and mapping, and particularly discloses an intelligent surveying and mapping system and method based on a remote sensing technology, and the method comprises the steps: obtaining a multi-time-sequence remote sensing image data set of a target region through multiple platforms carrying intelligent sensing elements; performing three-dimensional reconstruction and cross-time-phase accurate alignment on the time-phase data to generate a three-dimensional space coordinate sequence under a unified coordinate system; carrying out conjoint analysis on the multi-time-sequence attribute of each spatial point in the sequence, and generating a fused spatio-temporal feature by distinguishing a persistent structure and instantaneous interference; constructing a three-dimensional graph structure according to the features, performing hierarchical aggregation, and identifying a point set with similar features and continuous space as an entity unit with a single semantic identifier; based on the semantic and geometric attributes of the entity units, automatically establishing a spatial topology and time evolution relationship, and generating a structured information set containing complete space-time dimension information; according to the invention, high-precision intelligent surveying and mapping from static modeling to dynamic spatio-temporal knowledge generation is realized.

This invention provides a foldable convergence measuring pile and cavern surrounding rock monitoring system. The foldable convergence measuring pile includes an anchor rod and a probe. One end of the anchor rod has a first hinge lug. The probe includes a connecting rod, a reflective sheet attached to one side of the connecting rod, and a second hinge lug connected to the connecting rod. The second hinge lug is connected to the anchor rod via a pin. The hinged connecting rod forms a first position and a second position. In the first position, the connecting rod is flush with the anchor rod. In the second position, the angle between the connecting rod and the anchor rod is less than or equal to 90°. The probe of this invention is hinged to the anchor rod. During observation, the probe is opened; after observation, the probe can be rotated to fold, thus significantly reducing the probability of damage to the convergence measuring point (probe) during construction, reducing the need for repeated deployment of convergence measuring points, and improving work efficiency.

The invention relates to a method and a system for identifying a slow-dip-angle structural plane of a pumped storage upper reservoir, and the method comprises the following steps: selecting a plurality of surveyed pumped storage power station upper reservoir regions as sample regions, and obtaining the exploration sample data of the sample regions; gridding the sample area into a three-dimensional voxel grid, preprocessing exploration sample data, extracting exploration features of each voxel in the three-dimensional voxel grid, adding a sample label indicating whether the voxel belongs to a low-dip-angle structural plane, and putting the sample label into a training sample set; constructing a recognition model based on a machine learning model, and performing iterative training on the recognition model by using the training sample set to obtain a voxel low-dip-angle structural plane probability recognition model; and acquiring exploration data of a reservoir region on the pumped storage power station to be identified, acquiring a prediction probability of whether each voxel in the region belongs to a low-dip-angle structural plane or not by using the voxel low-dip-angle structural plane probability identification model, and further identifying the low-dip-angle structural plane in a target region.

The application discloses a GIS flange butt joint positioning device, which comprises two left and right cylinders, a laser transmitter and a laser receiver, two elastic bands sleeved on the cylinders and a controller; the opposite ends of the two left and right cylinders are respectively provided with GIS flanges, and a plurality of screw holes are arranged on the GIS flanges; the head part one of the laser transmitter and the head part two of the laser receiver are respectively arranged in the screw holes of the GIS flanges at the end of the left and right cylinders; the body part one of the laser transmitter and the body part two of the laser receiver are respectively connected with the movable thimble of the elastic bands on the left and right cylinders; and the laser transmitter and the laser receiver are in communication connection with the controller. The head parts of the laser transmitter and the laser receiver are located in the screw holes of the GIS flanges, and the existing screw holes are used as the positioning standard; when the laser receiver receives the signal of the laser transmitter, the screw hole alignment can be judged; the positions of the two relative to the screw holes do not need to be measured any more, and the positioning butt joint time and the installation period of the GIS flange are reduced.

The invention discloses a land stratified sampler for land monitoring for land surveying and mapping, and relates to the technical field of soil stratified sampling, the soil stratified sampler comprises a bottom block, a driving module and a shell, a vertical square frame and a rack are embedded and fixed in the middle of the left side of the bottom block, the rack is fixed on the left side of the vertical square frame, the driving module is slidably mounted above the outer wall of the vertical square frame, and the shell is connected with the vertical square frame. The machine shell is arranged at the bottom of the left side of the driving module, a through hole is formed in the middle of the bottom face of the machine shell, the servo motor is fixed to the upper portion of the inner wall of the machine shell, the hollow pipe is fixed to the bottom end of the interior of the machine shell, the T-shaped column is rotationally installed on the inner wall of the hollow pipe, and the bottom of the outer wall of the T-shaped column is rotationally in contact with the inner wall of the through hole of the machine shell. The surface of the drilling barrel is lubricated downwards through slurry in the annular shell, and therefore the problem that the layered soil drilling effect of the drilling barrel is poor due to the fact that the drilling barrel is prone to deformation and damage due to continuous friction between the drilling barrel and soil is solved.

The utility model provides an offshore single pile construction measuring device, which belongs to the technical field of measuring devices and comprises a connecting disc, a mounting disc arranged above the connecting disc, a rotating disc arranged above the mounting disc, a total station detachably connected to the rotating disc, a plurality of groups of supporting rods rotatably connected to the peripheral side of the connecting disc, and telescopic rods slidably connected to the interiors of the plurality of groups of supporting rods. Adjusting assemblies are arranged on one sides of the multiple sets of supporting rods, a rotating assembly is arranged in the mounting disc, protection assemblies are arranged on the two sides of the total station, through the arrangement of the adjusting assemblies, a user can fold or unfold the supporting rods, the portability of the device is improved, after the supporting rods are unfolded, the user can provide shielding protection for the total station through the protection assemblies, and the user can conveniently use the total station. According to the total station, by arranging the rotating assembly, a user can reduce external collision and erosion to the total station, the protection performance of the device is improved, by arranging the rotating assembly, the user can control rotation of the rotating disc, and the reliability of angle adjustment of the device is improved.

The invention provides a total station automatic focusing and reflector plate identification method and system based on intelligent image.The method relates to the technical field of engineering surveying, and comprises the steps that a stepping motor is controlled to drive a focusing lens barrel to move step by step in the direction of an optical axis, a coaxial camera collects images at all positions and calculates definition evaluation values to complete coarse adjustment and fine adjustment focusing, and the focusing precision is improved; and automatic focus locking is realized. The center coordinates of the reflector plate are determined through image preprocessing and reflector plate area recognition, the horizontal and vertical angle deviation can be calculated, sighting is achieved by driving a horizontal servo motor and a vertical servo motor to rotate automatically, and closed-loop control can be completed through iterative correction. The system is composed of a coaxial camera, a focusing execution mechanism, a master control module, an image processing module, an angle calculation module and a servo driving module, a coaxial optical path structure is adopted to eliminate parallax errors, the system has the high-precision automatic focusing, intelligent recognition and rapid automatic sighting capabilities, and the automation level and the measurement precision of the total station can be remarkably improved.