47 results about "Ship master" patented technology

The invention discloses a ship maneuverability prediction method, a ship maneuverability prediction system and a ship maneuverability prediction device taking propeller performance changes into regular waves. The method comprises the following steps: firstly, calculating the motion response, the second-order wave drift force and the drift moment of a ship body under different regular wave conditions based on a potential flow theory, establishing a wave force fitting equation taking the wave direction and the navigational speed as variables, and performing ship manipulation motion numerical simulation in regular waves based on an obtained calculation result; acquiring an input parameter range of the propeller in a manipulating motion state; establishing a CFD numerical model of ship propeller performance in regular waves, simulating heaving and pitching motion of the propeller under motion response, determining the range of the heaving and pitching motion, and calculating propeller thrust data under different wave conditions and input parameters; and carrying out regression analysis on the propeller thrust data, and fitting to obtain a prediction formula of the propeller thrust coefficient in the regular waves. The formula couples the wavelength-to-length ratio, the advance speed coefficient and the wave direction angle, and quantifies the dynamic influence of the wave on the propeller thrust.

The invention relates to a marine ship carbon emission accounting method and device based on interpretable residual learning, and a medium, and the method comprises the steps: complementing the missing of static parameters through ship IMO numbers, carrying out the unified coding and unit standardization of marine log dynamic data, combining the host power and oil consumption dual-path verification of the data validity, and carrying out the calculation of the marine ship carbon emission. After abnormity is cleaned, dynamic, static and meteorological data are fused to construct a carbon emission database; calculating the comprehensive action of wind resistance, still water resistance and wave resistance by applying a fluid mechanics law, generating a physically-driven carbon emission reference value, and synchronously extracting key characteristics such as navigational speed, wave height and ship length; with reference values and features as samples, uncovered dynamic features are learned through a multi-layer residual block chain structure, and a carbon emission accounting model is trained in combination with a cross validation and regularization mechanism; and finally realizing high-precision carbon emission prediction based on the training model. Compared with the prior art, the method has the advantages that the residual network is comprehensively used, interpretability analysis is achieved, and high-precision prediction of ship carbon emission is achieved.

This invention provides an unmanned aerial vehicle (UAV) for intelligent identification of polar ice rinks, comprising a main body, a solar panel, control wings, a propeller, and an observation cabin. The UAV is powered by solar energy, enabling a long endurance. The control wings are symmetrically mounted on both sides of the main body, enabling ascent, descent, and steering. The propeller provides propulsion, working in conjunction with the control wings to complete ascent, descent, and steering movements. The observation cabin incorporates multiple functional modules for ice rink identification, UAV and transport ship positioning, data transmission, and status monitoring. Illumination warning lights are installed on the leading edges of the wings to facilitate ice rink identification and landing during polar night conditions. A method for intelligent identification of polar ice rinks using this UAV is also provided. This invention enables detailed and accurate observation of sea ice morphology around shipping lanes, obtaining precise sea ice data to aid polar transport ships in navigation, assist captains in decision-making, and reduce the risk of distress.

The application discloses a kind of acceleration load calculation formula correction method for pipeline stress analysis, comprising the following steps: 1) based on potential flow theory, diffraction theory, establish ship motion equation;2) in AQWA software, the ship length, type width, type depth, design draft, displacement, inertia moment of general FPSO are input, time domain analysis is carried out, and its hydrodynamic coefficient is obtained, then acceleration load extreme value is predicted using SESAM software;3) according to the ship length, type width, type depth of general FPSO, design draft, structural draft, displacement under different working conditions, the acceleration of each degree of freedom is calculated according to ship motion acceleration load calculation formula;4) error analysis is carried out to the acceleration value calculated in steps 2), 3), and the acceleration formula calculation value needs to be corrected if the error is greater than d;5) introduce correction coefficient f, and the acceleration calculation value with error greater than d is corrected until the error is less than d;6) the corrected acceleration can be applied on the pipeline as acceleration load.

This invention proposes a blowout preventer (BOP) arrangement design method. The lower BOP and lower riser assembly are vertically arranged on the same sidewall of the moonpool, perpendicular to the ship's length direction, using a fixing device. A lower BOP base and a lower riser assembly base are respectively connected below the lower BOP and lower riser assembly. Pressure testing pipelines and corresponding interfaces are provided around the lower BOP and lower riser assembly for BOP pressure testing operations. This invention can be disassembled and arranged separately or assembled as a whole for interchangeable arrangements; it can perform pressure testing and maintenance operations at a single storage location or simultaneously at two storage locations.

This invention discloses a method, medium, and system for dynamic testing of water traffic risks. The method includes: establishing an internal information set of the water traffic system by extracting information from ship equipment, maritime departments, and captain consultations; this information set includes navigation environment information, human-computer interaction information, and ship-to-shore communication information; extracting and measuring the non-uniform characteristics of information transmission within the water traffic system using information flow theory; and using wavelet transform and spectral analysis to extract and analytically model the dynamic characteristics of water traffic risks; then constructing a dynamic testing model of water traffic risks using a data-driven approach; finally, inputting the abnormal characteristic values ​​of the water traffic system information in the test area into the dynamic risk testing model to obtain the calculated risk value for that area. This invention can quickly achieve dynamic testing of water traffic risks, improving the efficiency and targeting of water traffic safety supervision.

The application provides a method and system for determining the roll angle of a fishing ship under the action of waves, the method comprising: obtaining ship parameters of a target fishing ship and wave environment parameters of a target sea area; calculating dimensionless parameters according to the ship parameters and the wave environment parameters, the dimensionless parameters including relative ship speed, wave steepness, relative ship width and heading angle radian value; selecting a corresponding roll angle calculation model according to the length range of the target fishing ship; and substituting the dimensionless parameters into the selected roll angle calculation model to calculate the roll angle of the target fishing ship. The application can quickly and accurately calculate the roll angle of the fishing ship based on real-time sailing and wave parameters, realize risk warning and heading optimization, and significantly improve the safety and operation efficiency of the fishing ship sailing.

The invention relates to the technical field of communication, in particular to a dynamic and static secret key encryption technology and method applied to an encryption ship automatic identification system. Comprising a ship name, a call number, a ship length, a ship width, a ship type, a ship native place port and positioning antenna position information, and the ship AIS terminal module is configured to collect ship static data, dynamic data and navigation related data and broadcast the data through a very high frequency channel; the dynamic data comprises longitude and latitude coordinates of the ship, the speed to the ground, the course to the ground, the bow direction, the navigation state and the steering rate, and the navigation related data comprises the draft of the ship, the dangerous cargo type, the destination and the estimated arrival time; the core problem that a traditional AIS system is insufficient in data protection capacity in a dynamic threat environment can be solved.

This invention discloses a digital lofting method for machining templates of ship hull curved surfaces, belonging to the field of shipbuilding technology. The method includes acquiring a three-dimensional digital model of the target ship hull curved surface; calculating and determining the unidirectional principal twist direction of the curved surface based on the model; defining a set of virtual parallel cutting planes, wherein the angle between the common normal direction of this set of cutting planes and the unidirectional principal twist direction is between 85 and 95 degrees; determining the interval positions between each plane in the set of parallel cutting planes along the ship's length direction according to preset rules; calculating the intersection line between each parallel cutting plane and the target ship hull curved surface in the three-dimensional digital model to obtain a set of spatial profiles; extracting the three-dimensional coordinate data of each spatial profile; and generating a digital template file based on the three-dimensional coordinate data for driving machining equipment to create physical machining templates or for direct use in steel plate forming inspection. This invention has the advantage of improving the efficiency of digital lofting of ship hull curved surface machining templates.

This invention relates to the field of shipbuilding technology, and more particularly to a design method for a multi-layer continuous truss support structure for ships, comprising the following steps: fixing support columns between adjacent decks vertically, the support columns being located at deck transverse beams, and the support columns on the same vertical line forming support columns; arranging multiple rows of the support columns at intervals along the ship's width; arranging multiple rows of the support columns at intervals along the ship's length, each row of support columns being located on the same straight line and arranged at the long longitudinal bulkheads of the hull; arranging deck longitudinal girder below each deck along the ship's length, the deck longitudinal girder connecting to the deck transverse beams and the corresponding support columns, such that the deck longitudinal girder, the support columns, and the deck transverse beams form a truss support structure. This invention can ensure the progress and quality of the design and improve space utilization.

The application discloses a B type cabin suitable for a container ship to be changed into an LNG transport ship, which comprises a closed cabin body suitable for the shape of a cargo cabin of the container ship, a dome is arranged on the upper portion of the closed cabin body, and a plurality of longitudinal anti-sloshing cabin walls and transverse anti-sloshing cabin walls are arranged in the closed cabin body. The longitudinal anti-sloshing cabin walls are parallel to two cabin walls along the length direction of the container ship. The transverse anti-sloshing cabin walls are perpendicular to the longitudinal anti-sloshing cabin walls and parallel to two cabin walls along the width direction of the container ship. A plurality of anti-sloshing cabin wall through holes are formed in the longitudinal anti-sloshing cabin walls and the transverse anti-sloshing cabin walls. The B type cabin with different anti-sloshing cabin wall arrangement structures is designed in combination with the structural features of the cargo cabin of the container ship, so as to be suitable for different modification schemes of the container ship to be changed into the LNG transport ship, thereby the safety risk caused by the sloshing impact of the free surface of the B type cabin storing the LNG on the B type cabin and the ship body structure is maximally reduced, and the B type cabin is safe and reliable.

The utility model provides a bulk cargo ship with side-mounted cargo winch, and belongs to the shipbuilding technical field. The utility model discloses including ship body structure, the ship body structure is equipped with a plurality of cargo holds along the length direction, the top of cargo hold is equipped with hatch coaming, is provided with the folding hatch cover on the hatch coaming, the main deck of ship body structure is installed with a plurality of Z type's crane base, is installed with the cargo winch on the crane base, the crane base can expand the hoisting range of cargo winch. The utility model can install the crane on the side deck of bulk cargo ship, and satisfies the hoisting demand of all cargo holds.

The invention relates to an ultra-large automobile transport ship in the technical field of ships, which comprises a ship body, the interior of the ship body is divided into a plurality of layers of smaller unit cabins and a plurality of layers of larger unit cabins, and the smaller unit cabins are distributed above the larger unit cabins; viewed from the view angle of the cross section of the ship body, the following supporting columns are fixed in the ship body: a central supporting column in the middle, and the central supporting column is fixedly connected with a smaller unit cabin and a larger unit cabin from top to bottom; the two side supporting columns are located on the left side and the right side of the center supporting column respectively and fixedly connected with the small unit cabin and the large unit cabin from top to bottom. By the adoption of the scheme, the loading capacity can be further improved by increasing the ship width under the existing limiting conditions of various ship lengths and deck heights, the cross beam span and the component size can be effectively reduced when the ship width is large through the structural arrangement of the three supporting columns, the layout scheme of the ship width of 40-50 m can be supported through the arrangement structure of the three supporting columns, and the ship loading capacity can be further improved. And the maximum width of the Panama canal can be well adapted.

The invention discloses a support positioning and mounting method and a B-type cabin ship manufacturing method.The support positioning and mounting method is used for ship multi-support mounting and comprises the steps that firstly, a web plate, a rib plate and a bottom end common datum plane of each support are selected to serve as ship width datum lines, ship length datum lines and ship height datum lines respectively; an intersection line of a certain rib position cross section of a to-be-installed structure and a top surface or a bottom surface of the to-be-installed structure is taken as a rib position datum line, then a preset shortest distance between a ship width datum line and a midship line is defined as a first distance, a distance between a ship length datum line and the rib position datum line is defined as a second distance, and a distance between a ship height datum line and an upper surface or a lower surface of the to-be-installed structure is defined as a third distance; and positioning is carried out according to the three preset distances of the supports. According to the method, positioning is carried out based on a unified reference and parameters, a constructor can carry out rapid installation according to a preset distance, repeated measurement and adjustment are not needed, uncertainty is reduced, efficiency is improved, the three-dimensional position of the support is accurately determined, installation accuracy is guaranteed, and the problems of pairing gaps and dislocation between multiple sets of paired supports and a ship structure are effectively solved.

The invention discloses a ship motion response intelligent forecasting system and method. The system comprises a data transmission module, a data reading module and a data forecasting module. The data forecasting module is used for inputting the data of the data reading module into an improved multi-trunk neural network fusion forecasting model, analyzing and forecasting the data and displaying a result; the ship motion response intelligent forecasting system which is reliable, has high timeliness and generalization ability and is provided with a visual interaction interface is designed and established, real-time monitoring and forecasting of six-degree-of-freedom motion of a ship are achieved, workers and a captain are helped to make scientific decisions, and the ship motion response intelligent forecasting system is high in practicability and easy to popularize. And the safety and reliability of marine operation of the ship are improved.

The invention relates to the field of water surface garbage salvage, and discloses a passive welt primary-secondary type unmanned ship for river cleaning, which comprises a primary ship, a secondary ship assembly and a flexible arm for realizing connection between the primary ship and the secondary ship assembly, the secondary ship assembly comprises a secondary ship main body, and a storage chamber is arranged at the stem of the secondary ship main body; the side, facing the bow, of the storage chamber is open and provided with a salvage unit, an upper output pipe is arranged on the upper surface of the storage chamber, a suction pipeline is arranged on one side of the upper output pipe, and the tail end of the suction pipeline is connected with a garbage inlet of a negative pressure suction element arranged on the mother ship. The ends, facing the stern of the sub-ship body, of the convex wings are provided with air injection cavities, the air injection cavities communicate with exhaust ports of the negative pressure suction elements, the opposite sides of the convex wings of the two sub-ship assemblies are arranged to be in a plane shape parallel to the length direction of the sub-ship body, and the opposite sides of the convex wings of the two sub-ship assemblies are arranged to be in a cambered surface shape. And the cambered surface of the convex wing is bent towards one side of the plane of the convex wing.

This utility model provides a lifting system for the upper deck of a ship, belonging to the field of shipbuilding technology. It includes a front-end mounting platform, a lifting platform assembly, and a rear-end mounting platform, all mounted on the upper deck. The lifting platform assembly comprises multiple lifting platforms connected sequentially along the ship's length. Hinged structures are provided between the front-end mounting platform and the lifting platform assembly, and between the rear-end mounting platform and the lifting platform assembly. This utility model, by setting the front-end mounting platform, lifting platform assembly, and rear-end mounting platform on the upper deck, and by designing the lifting platform assembly as a modular structure composed of multiple lifting platforms, facilitates segmentation and component assembly during construction based on heavier structures or functional areas. This reduces dock assembly difficulty, shortens dock construction cycle, and improves dock turnover utilization. Furthermore, it allows for simultaneous segmented manufacturing of various components, improving construction efficiency and shortening the construction cycle.

The invention relates to a real-time ship manipulation fluid-solid coupling simulation method based on two-dimensional lattice Boltzmann, which comprises the following steps: calculating two-dimensional flow field data of a water area based on a Navier-Stokes equation; based on the two-dimensional flow field data, extracting an area with preset ship length multiples around the ship body as a real-time fluid calculation area; performing real-time analysis on the real-time fluid calculation area by utilizing a lattice-Boltzmann method to obtain a fluid load on the surface of the ship body; and calculating a ship navigation trajectory based on the fluid load in combination with a ship inertia moment. According to the invention, the problem of ship-water bidirectional coupling in real-time ship simulation is solved, so that the ship simulator has higher authenticity and reliability in the problems of side wall effect, double-ship intersection and the like.

The utility model relates to a multi-point ammonia leakage monitoring system for a ship. The multi-point ammonia leakage monitoring system consists of a gas analysis host and a circulating sampling system, the circular sampling system is used for circularly extracting sample gas of a plurality of specified sampling points one by one and conveying the sample gas to the gas analysis host; the gas analysis host comprises an absorption cell for receiving sample gas, a laser, a laser driving module, a photoelectric detector, a signal processing module and a display alarm module; the laser driving module drives and modulates laser output by the laser, the laser enters the absorption cell, is absorbed by ammonia gas in sample gas after being reflected for multiple times, is reflected out of the absorption cell through a light outlet of the absorption cell, and is collected by the photoelectric detector; the photoelectric detector converts a light intensity signal into a current signal, the signal processing module receives the current signal, processes and converts the current signal into ammonia concentration information and sends the ammonia concentration information to the display alarm module, and alarm information is sent to the display alarm module and a ship master control room when an internal threshold value is exceeded. The ammonia gas leakage monitoring device can monitor the ammonia gas leakage concentration in real time and provide ammonia gas leakage alarm information.

The application provides a ship collision avoidance decision trigger opportunity modeling method which imitates human social cognitive process, comprising: obtaining ship AIS data, extracting the longitude, latitude, heading, speed and length information of the ship in the AIS data, and constructing an eccentric ellipse ship field; calculating the remaining distance DDV of a target ship TS before invading the own ship OS field, the remaining time TDV of the target ship TS before invading the own ship OS field, and the distance D between the ships; constructing a drift rate function, forming the unit time information accumulation and the current time information accumulation total amount; constructing a decision boundary, and forming a decision trigger result based on the information accumulation and the intervention scenario. The application is based on the variable drift diffusion model in the human cognitive modeling field, learns from the unique evidence accumulation mechanism in the human cognitive process, converts the instantaneous risk parameter into the evidence accumulation amount under the unit time, replaces the threshold determination trigger method into the mode whether the evidence amount reaches the trigger boundary, and imitates the human social cognitive decision mode by introducing the safe decision length.

This invention discloses a test apparatus for the ultimate strength of a ship hull beam section under cyclic loading, comprising a specimen, a gantry system, and an actuation device. The specimen includes a test section, an extension section, a lengthening section, supporting steel columns, and loading steel columns. Extension sections are welded to both ends of the test section, and the extension sections are fixedly connected to the lengthening sections. Loading steel columns are welded to both ends of the top and bottom surfaces of the test section. Supporting steel columns are welded to the ends of the lengthening sections. Support supports are fixedly installed at both ends of the gantry system, and the support supports have openings for the supporting steel columns to pass through at both ends, allowing the loading steel columns to slide freely along the ship's length. The actuation device includes an upper actuating head installed above the test section and a lower actuating head installed below the test section. This invention can simultaneously apply mid-sag / mid-camber loads to the test section of the ship hull beam while ensuring that the test section only bears pure bending moments and not shear stresses, thus obtaining the ultimate strength of the test section of the ship hull beam under cyclic loading of mid-sag / mid-camber.

A ship model for structural mechanics analysis and its manufacturing method are disclosed. The hull is a one-piece molded shell structure, and the hull profile is consistent with the outer shell of the ship structure to be verified. Multiple mass blocks, each with a sheet-like structure, are spaced apart along the length of the hull. The mass distribution of these mass blocks is consistent with the mass distribution of the internal structure of the ship to be verified. A mounting frame is mounted above each mass block. A measuring beam, positioned along the length of the ship, is rigidly connected to the mass blocks via the mounting frame. An optical fiber sensor array is mounted on the measuring beam, arranged along its length on its surface. The optical fiber sensor array measures the strain distribution of the measuring beam. This eliminates the need for segmented ship model design, reduces manufacturing steps, and accurately acquires continuous modal information. This makes the ship model structure suitable for preliminary design and mechanical performance verification of large ships, enabling more precise verification of ship structural reliability.

The invention discloses an unsteady numerical method and system for simulating the hydrodynamic interaction of two ships in a wave environment, and the method comprises the steps: setting a computational domain and boundary conditions with the average value of the lengths of the two ships as the characteristic length through selecting the scale models of a pursued ship and a pursued ship; carrying out local encryption grid division on the curvature change area of the ship body by adopting an overlapping dynamic grid technology; a first-order VOF wave module is used for generating regular waves, and the water-gas two-phase volume fraction, pressure and speed initial conditions are configured through an Euler multiphase model; a translational motion is set for a chasing ship, an overlapped dynamic grid area is specified to follow up, six-degree-of-freedom body model parameters are configured for a chased ship, and an unsteady RANS equation and a turbulence model are solved by adopting an implicit unsteady solver. According to the invention, the transient change of the flow field can be captured in real time, the nonlinear characteristics of waves and the complex relative movement of two ships are accurately simulated, and a high-precision numerical analysis means is provided for ship navigation safety assessment and performance optimization.

The invention discloses a marine driving console and an electric tourist ship, the marine driving console comprises a first table and two second tables, the first table is arranged in the middle of the front end of a cab along the left-right direction, the front upper end of the first table is provided with a display screen, and the two second tables are respectively arranged on the left side and the right side of the first table; a steering wheel is arranged in the middle of the rear portion of the first table, the front ends of the sides, close to each other, of the two second tables are aligned to the rear side of the first table, the front ends of the two second tables are provided with corner parts extending to be close to each other, and the ends, close to each other, of the two corner parts are aligned to the corresponding sides of the first table respectively. Storage spaces are formed in the first table and the second tables, a captain seat is arranged in an area defined by the first table and the two second tables, and common equipment is embedded in the position, located on the rear side of the display screen, of the table top of the first table. Therefore, the whole driving control operation is more convenient, and meanwhile, the display surface of the display screen is also in a better visual field state.

The application relates to the technical field of large ships and ocean engineering, and discloses a steel-aluminum mixed ship deck structure and a design method thereof. The deck structure comprises an aluminum alloy deck, aluminum alloy longitudinal spars of a groove-shaped section arranged uniformly and parallel to each other along the ship length direction under the aluminum alloy deck, and a steel frame connected with the aluminum alloy longitudinal spars through steel-aluminum transition joints. The steel frame comprises strong transverse beams and weak transverse beams arranged along the ship width direction and longitudinal girders arranged along the ship length direction. The section of the components of the steel frame is all I-shaped section. The strong transverse beams and the weak transverse beams are arranged in parallel and at intervals, and the longitudinal girders are arranged in parallel and perpendicularly intersect the strong transverse beams and the weak transverse beams. The application adopts a design concept without a belt plate, the thickness of the deck plate does not need to meet the minimum thickness size requirement in the specification, the width of the deck belt plate is not taken into account when the moment of inertia and the section modulus of the components are calculated, the lightweight design of the deck is realized, the center of gravity is reduced, the stability of the ship is improved, the fuel consumption is reduced, and the navigation cost is reduced.

The application relates to the technical field of unmanned ships and discloses a novel multifunctional unmanned operation ship based on wave-light complementary power generation, which comprises a ship body, an environment monitoring mechanism, an energy recovery mechanism, a full-revolution electric power propulsion device, an unmanned aerial vehicle taking-off and landing platform, an ROV automatic laying and recovery mechanism and an AUV automatic laying and recovery mechanism. The energy recovery mechanism comprises two clean energy power generation devices, namely a wave energy power generation device and a solar energy power generation device. The wave energy power generation device is installed on the two sides of the ship body, and the solar energy power generation device is installed on the deck of the ship body. The clean energy is stored and redistributed through the storage battery in the cabin. The energy recovery mechanism of the device comprises the wave energy power generation device installed on the two sides of the ship body and the solar energy power generation device installed on the deck, so that the wave energy and the solar energy can be comprehensively utilized, the clean energy utilization rate is improved, and the requirement of long-distance navigation of the unmanned operation ship is met.

The invention relates to a pipeline structure of a cabin anti-backwater drainage system. The pipeline structure comprises a plurality of drainage units arranged in the length direction of a ship; the drainage unit comprises a horizontal branch header pipe arranged below a residential area deck in the transverse direction of the ship, and the upper portion of the horizontal branch header pipe is connected with a plurality of residential area drainage devices or drainage port connecting pipes. The two ends of each horizontal branch header pipe extend to the chord side and communicate with the corresponding vertical branch pipes, and a pair of vertical branch pipes are formed on the two sides of the same horizontal branch header pipe. The vertical branch pipes extend downwards to the position close to the ship bottom or the lower layer cargo hold and are communicated through a horizontal communicating pipe. The positions, not higher than the horizontal communicating pipes, of the vertical branch pipes of the adjacent drainage units are communicated through a horizontal header pipe; one vertical branch pipe is selected from all the vertical branch pipes and extends downwards into a cabin or external seawater. The ship residential area domestic wastewater drainage smoothness is higher, and wastewater gathering in a horizontal pipeline is reduced; the water return probability of each cabin in the residential area is obviously reduced or even completely eradicated; and the dwelling experience of sailors is improved.

The application discloses a kind of heterogeneous ship multi-track subsection general feature extraction method, the heterogeneous ship is the multiple ships of different ship type C and ship length L, the method comprises the following steps: determining AIS data acquisition sea area;Classify heterogeneous ship;General subsection is carried out to multi-track;Extract general subsection track feature;In turn select the track in track set, according to MMSI select the general subsection of belonging ship classification and its general subsection track feature.The application can simultaneously process multiple tracks of different ships, and can be used for trajectory compression or trajectory feature extraction.The application determines track feature points by scoring, ensuring the effectiveness of track feature extraction.In addition, other tracks can also be directly applied to the application, ensuring the generality of the track feature extraction algorithm.Compared with traditional feature extraction algorithms, the iteration and calculation time are reduced.

The utility model discloses a ship movable box foot frame device belongs to ship movable box foot frame structure technical field, including main frame, guide rail, sliding block, base and pile cone, the bottom plate of main frame is connected in the ship cargo warehouse bottom wall, the guide rail sets up the bottom plate upper end of main frame, the inside of main frame corresponds the chute that is seted up to the both ends of guide rail, the chute is parallel to the ship cargo warehouse width direction and sets up, the both ends of guide rail are respectively embedded in the chute and can move along the transverse of chute, the guide rail is parallel to the ship length direction and sets up, the sliding block sets up the top of guide rail and can move along the longitudinal of guide rail, the pile cone is fixed the top of base, the base is fixed the top of sliding block, through the transverse movement of guide rail along the chute, the longitudinal movement of sliding block along the guide rail, can realize the two -dimensional position adjustment of pile cone, can adapt to different size container, solves the problem that the fixed pile cone adaptability is poor.

The present invention provides a method for installing the side base of the upper hull of a large B-type cabin, including: dividing the main body of the side base of the upper hull of the B-type cabin bidirectionally into several segments; placing the segments in the reverse state, spot welding and fixing the base, and performing sand blasting, rust removal and coating construction on the base together with the segments; performing reverse pre-assembly on the segments, and pre-assembling them into the left 1 pre-assembly general section, the middle 1 pre-assembly general section, and the right 1 pre-assembly general section in the ship width direction; optimizing and marking the reference line in the ship width direction, the reference line in the ship length direction, and the reference line in the height direction of the overall section of the upper part of the B-type cabin, and installing the side base of the upper hull of the B-type cabin according to the defined reference lines; turning over the pre-assembled general sections respectively and assembling them into the overall general section; performing in-dock closure on the overall general section; the present invention avoids potential safety hazards such as insulation fire of the B-type cabin caused by welding after the installation of the B-type cabin.