726 results about "Dimensional simulation" patented technology

The invention discloses a method for detecting an electric power circuit by a flight inspection robot, and belongs to the technical field of noncontact type detection of the electric powder circuit. The method uses a minitype helicopter as a carrier; firstly, a two-dimensional simulation detection model of the flight inspection robot for the electric power circuit is established; secondly, a mathematical description method is used for establishing a target function, a constraint condition target function and a programming variable for the two-dimensional simulation detection model; and finally, according to a programming flight path designed by the two-dimensional simulation detection model, the flight inspection robot inspects the electric power circuit. The method overcomes the disadvantages that a working mode of manual inspection and manual paper medium recording can not ensure the in-place of inspectors and has inaccurate or irregular defect description, and avoids the problems that the manned helicopter used for inspection has high requirement on technique and experience of workers, the workers are required to wear specific work clothes and manpower and material resources are consumed largely. Though disposable input is large, the quality and efficiency for task completion of the method is far higher than that of the prior other modes.

The invention relates to a multi-dimensional simulation analysis system for user energy efficiency evaluation. Each energy user is provided with the system which is used for carrying out multi-dimensional simulation analysis for user energy efficiency data and realizing evaluation analysis and economization management for user energy efficiency. Primary techniques for the multi-dimensional simulation analysis system for the user energy efficiency evaluation include manual inference learning, data mining, and fuzzy Petri network simulation. The system comprises a data interface module, a data rough-processing module, an energy efficiency analysis model management module and an energy efficiency multi-dimensional simulation analysis module, wherein the data interface module is in communication linkage with the data rough-processing module, and the data rough-processing module is in communication linkage with the energy efficiency analysis model management module and the energy efficiency multi-dimensional simulation analysis module. The multi-dimensional simulation analysis system for user energy efficiency evaluation is capable of greatly improving accuracies of energy efficiency analysis and evaluation result, and is applicable to various energy consumers, energy consuming types and energy consuming industry fields.

The invention discloses a liquid column separation-bridged water hammer simulation method based on three-dimensional CFD (Computational Fluid Dynamics). The liquid column separation-bridged water hammer simulation method comprises the following steps: by carrying out three-dimensional modeling and mesh generation, firstly, carrying out single-phase compressible stable-state calculation of a water body to obtain a stable-state fluid field; then carrying out liquid column separation gas-liquid two-phase transient flowing calculation; and finally, processing a computed result by using post-processing software. According to the liquid column separation-bridged water hammer simulation method, on the basis of simultaneously considering the compressibility of the water body and steam, the mass transfer between gas and liquid is considered, and liquid column separation types do not need to be distinguished, so that a mathematical model and a solving method thereof are simplified to a certain extent and the simulation accuracy is relatively high; and unreal pressure pulse similar with one-dimensional simulation is not formed, and visualization of primary formation, development and collapsing processes of a hollow hole in a liquid column separation process is realized.

The invention discloses a geographic information based three-dimensional application system and relates to the technical field of geographic information processing and display. The system is characterized by being composed of a data engine module, a resource request allocation module and a rendering engine module which serve as a main body; and the system is a complete system assistantly composed of a relational database, a basic function library and a graphic interface module. The problems in geographic information data based management, spatial data organization, retrieval and analysis, three-dimensional scene organization and management, efficient massive data dispatching, model and texture sharing, quick three-dimensional simulation display of geographic information data and the like can be effectively solved. Meanwhile, the system can be expanded to various different application fields for more professional and effective applications.

The invention discloses a method and system achieving integration of self-help decoration and installation. The method comprises the steps: after a user login entry receives correct user login information and determines login, calling and displaying a user design interface, wherein a simulation design area is formed in the user design interface; displaying a preset house type structure chart selected by a user and displaying house things selected by the user in the house type structure chart to form a three-dimensional simulation design chart; after receiving the request of displaying information of the house things selected by the user, extracting and displaying the information of each house thing selected by the user; after receiving the request of displaying the total price of the house things selected by the user, extracting the price of each house thing selected by the user, working out the total price and displaying the price of each house thing and the total price in the form of a detailed list. By means of the method, the decoration process is more convenient and more systematized, and the decoration efficiency of the user is improved.

The invention relates to a three-dimensional simulation method for a chemical vapor deposition process, belonging to the field of deposition process simulation in micro-electronic processing. The method comprises the steps of: representing material distribution of each position in a simulation region omega by using a cell method (CM) and subdividing the deposition graph surface into a plurality of triangular planes; realizing a transport process of quickly tracking deposition particles by using a Monte Carlo (MC) method in combination with a spatial oct-tree non-uniform subdivision technology, calculating to obtain the triangular planes of the deposition graph surface, and calculating in combination with a deposition model corresponding to current position material and the area of the triangular plane and the like to obtain the deposition velocity of each triangular plane of the deposition graph surface, wherein the blindness of the calculation of the deposition velocity is avoided; and according to the calculation result, obtaining the deposition velocity, and realizing accurate tracking of the deposition surface motion in the chemical vapor deposition (CVD) process by using a level set (LS) method. According to the method, various vapor deposition processes such as low-pressure chemical vapor deposition, plasma enhancement chemical vapor deposition, chemical vapor deposition under atmospheric pressure and the like can be simulated, and deposition simulation of complicated deposition graph composed of a plurality of materials is realized.

The invention relates to a one-dimensional integration heat management simulation method for an automobile engine. The one-dimensional integration heat management simulation method for the automobile engine is characterized by comprising the steps of conducting one-dimensional simulation on an engine cooling system, conducting one-dimensional simulation on an engine lubrication system, conducting one-dimensional modeling on an engine body part, conducting one-dimensional modeling on related systems or modules of the engine, and making simulation models of all the systems and parts be related for integration simulation.

This invention relates to a method for one dimensional simulation of multiphase fluid flow in pipelines enabling determination of pressure drop, fluid volume fractions, and heat and mass transfer coefficients in multiphase pipeline flows, wherein the method comprises providing real world values of the superficial velocities of each of the continuous fluid phases, the pipe diameter, and the inclination angle of the pipeline relative to the horizontal plane, providing initial values describing the flow geometry of the multiphase flow, where the initial values at least comprises the axial pressure gradient and the positions of the large scale interfaces separating the continuous fluid phases, employing a one-dimensional numerical model based on Eulerian formulated transport equations of the multiphase flow in the pipeline, solving the numerical model with the set of input values from step a) and b) to determine the flow parameters of the multiphase flow, and displaying one or more of the determined flow parameters.

The invention provides a machining process digital planning method and a software platform, and belongs to the field of part machining. The method comprises the steps that a main system obtains a machining drawing of a to-be-machined part, and generates a feature resume corresponding to the features of the to-be-machined part; the three-dimensional simulation system generates at least one process method modeling corresponding to the to-be-processed part according to the feature resume and the process method of the process database, and performs interference verification; the algorithm system performs operation on features in the feature resume according to a preset algorithm, and performs screening on process method modeling verified by the three-dimensional simulation system to obtain a theoretical processing flow; the three-dimensional simulation system performs virtual debugging according to the theoretical processing flow to obtain a current processing flow; and the process file generation system outputs a target process file which is provided for the machine tool and corresponds to the to-be-machined part according to the current machining process. By means of the processing scheme, information is digitalized from the process design source, and full-process digitalized and intelligent machining is achieved.

The invention provides a multitask multirole remote operated vehicle (ROV) cooperative training simulating system. A server stores, arranges, and invokes all kinds of data packets to comprehensively present various all kinds of data in a dynamic simulation manner, provide real-time simulation scenarios and present on-site demonstration of ROV states for training personnel, continuously receive instructions inputted by the training personnel, process the instructions, store the processed instructions as new simulation data, and compare the new simulation data with historical simulation data toprovide optimal operation indications in real time for the training personnel; a monitoring management end monitors an operation process of a whole training system, and performs optimization and management for the server; and a control panel terminal trains the personnel to receive three-dimensional simulation scenarios by a combined display and real-time state information of an operated and controlled ROV, and perform actual manipulation to an ROV and configuration tools thereof in a virtual scenario through a rocker device, a speed adjusting device and an operation handle device. The multitask multirole ROV cooperative training simulating system can accurately evaluate a training result, record a training process, and reasonably evaluate all completion key points and cooperation key points.

A method is provided for improving a photolithographic simulation model of the photolithographic simulation of a pattern formed on a photomask. Proceeding from a two-dimensional simulation model that takes account of the physical-chemical processes during lithography, a frequency-dependent intensity loss is calculated which is determined by multiplication of the simulated intensity distribution in the Fourier space by a filter function. An accurate calculation of the intensity distribution in the substrate plane is obtained. This method achieves the accuracy of three-dimensional models with a significantly shorter processing duration and is further suitable in particular for the calculation of OPC structures.

A method for building and paralleling a quasi three-dimensional electromagnetic environmental model on basis of a parabolic equation mainly adopts a sectioning method, i.e. an antenna transmitter is taken as a center, a three-dimensional space is divided into two separate two-dimensional sections according to a certain angle, so the complex three-dimensional electromagnetic environmental simulation problem is simplified into a two-dimensional simulation problem, then, an initial field of a quasi three-dimensional method is built from an antenna pattern, the complex geographical environment and the complex environment of an atmospheric structure are three-dimensionally sectioned, then, the solving process of the sectioned two-dimensional sections is accelerated through adopting a coarsness parallel computing method, the electromagnetic field distribution of the three-dimensional space is efficiently solved finally, and moreover, precision is not greatly lost. By the method, the electromagnetic field distribution of the space can be obtained without practical measurement, compared with a direct three-dimensional computing method, the computational complexity is greatly reduced, the computational scope is expanded to a larger extent, the computational efficiency is greatly improved, and strong basis is provided for the practical application requirement.

The invention discloses a two-dimensional graphics simulation method of an end mill grinding process, belonging to the technical field of two-dimensional simulation. The two-dimensional graphics simulation method solves the problem that it is difficult for the cutter grinding software in the prior art to find a normal section and an end section in the cutter grinding three-dimensional model, and further difficult to measure the cutter. The two-dimensional graphics simulation method comprises that firstly cutter position track data of a grinding wheel is read and a section cutting plane of the end milling is specified, relative position between the grinding wheel and the section cutting plane is analyzed and whether the grinding wheel corresponding to a cutter site intersects the section cutting plane is judged; if so, an intersecting contour curve of each cutter site corresponding to the grinding wheel and the specified section cutting plane is solved in order and the section cutting plane of all the grinding wheels is obtained; the section cutter planes of all the grinding wheel are superimposed to obtain a two-dimensional truncate section of a cutter slot; the two-dimensional section of the cutter slot is measured to determine whether the two-dimensional truncate section of the simulated cutter slot satisfies the machining precision; if not, a grinding process is modified. The invention is used to simulate the two-dimensional truncate of the cutter slot.

The invention discloses a simulation method for oxygen content distribution of a high-temperature carbonization furnace based on ANSYS, and relates to the technical field of simulation test methods for the oxygen content distribution of the high-temperature carbonization furnace. The method comprises the following steps: S1, establishing a three-dimensional simulation model; S2, carrying out the mesh generation; S3, importing a FLUENT module of the ANSYS software; S4, setting a detection point and a detection surface, carrying out simulation operation to obtain a simulation result, and takingthe simulation result as an index for designing a muffle cavity structure and an inlet and outlet sealing structure of the high-temperature carbonization furnace; S5, repeating the steps S1 to S4 according to different parameters, so as to carry out the simulation for many times. A temperature change curve of a detection point in a furnace chamber, a temperature cloud chart of a detection surfaceand an airflow speed cloud chart of the detection surface are used as indexes for evaluating the hearth heating effect and airflow and distribution characteristics, so that the optimal hearth heatingcapacity and airflow distribution design are determined. The structural design can be better measured, and the design cost can be reduced.

The invention discloses an underground diaphragm wall construction method based on a BIM technology, and the method comprises the steps: carrying out the three-dimensional modeling of an underground diaphragm wall design and construction drawing according to a project BIM application standard, and obtaining a project BIM model; based on the project BIM model, conducting collision and error inspection on underground diaphragm wall steel bars, fore shaft pipes and grouting pipes, and adjusting and optimizing the project BIM model according to the inspection result; performing three-dimensional simulation by using the project BIM model, and simulating a construction process; in the on-site construction process, conducting three-dimensional visual disclosure on on-site construction personnel according to the project BIM model; guiding field construction according to the project BIM model and the construction process simulation thereof; and after construction is completed, performing construction acceptance according to the project BIM model. By means of the construction method, the construction quality and precision of the underground diaphragm wall are improved, and the construction progress is accelerated.

The invention discloses an industrial design display platform which comprises a man-machine operating module, an identity identification module, an incidence relation establishing module, an electroencephalogram signal control module, an electroencephalogram signal processing module, a central processing unit, a 360-degree phantom imaging module and a simulation analysis module. The industrial design display platform achieves three-dimensional simulation of an industrial design product by applying a 360-degree phantom imaging technology without video making by consuming a large amount of time, meanwhile achieves comprehensive analysis and explanation of a three-dimensional simulation model of the industrial design product through the designed simulation analysis module, accordingly makes a client have an immersive life-like feeling and facilitates understanding of the client to the industrial design product. In addition, in the whole explanation process, a technician can achieve systematic control only by adjusting eye-closing time, and the industrial design display platform is convenient to use. Furthermore, each explanation process is stored in an automatic recording mode for facilitating later further product understanding and assessment of the client.

The invention discloses a virtual reality based on-load tap switch maintenance training method and relates to the technical field of three-dimensional simulated interactive training of the tap switch. A system is provided with a teaching unit and an examining unit on a server, the teaching unit comprises an equipment introducing module, an animation maintenance module and an operation practicing module, wherein the equipment introducing module can simply explain the structure and the principle of a CV type on-load tap switch and a CM type on-load tap switch, the animation maintenance module demonstrates normal maintenance and fault maintenance of the CV type on-load tap switch and the CM type on-load tap switch in an animation manner, the operation practicing module simulates the normal maintenance and the fault maintenance of the tap switch in an interactive manner, and the examining unit examines the normal maintenance and the fault maintenance of the CV type on-load tap switch and the CM type on-load tap switch. The virtual reality based on-load tap switch maintenance training method has the advantages that by the aid of three-dimensional simulation technology to simulate virtual teaching, cost can be greatly saved, and study interest and efficiency of trainees can be greatly increased.

The invention relates to the field of electric digital data processing, and in particular relates to a generating method and system of a three-dimensional simulation training case of a power grid substation. The generating method comprises the following steps of: generating the training case including a initial substation state and an operation step list; updating the initial substation state of the training case according to a received initial user substation state; generating a three-dimensional simulation scene, receiving a plurality of user operation steps in sequence, and updating the operation step list of the training case according to the received user operation steps; and storing the updated training case into the three-dimensional simulation training system. By utilizing the generating method of the three-dimensional simulation training case of the power grid substation, according to the requirements of the training case, a training case is established, case data of a teaching plan are automatically generated through state setting and demonstration operation in a three-dimensional simulation system of the substation, procedures of three-dimensional animation production, manual file edition and configuration or training system modification are not required, and the working amount during the generation of the cases is effectively reduced.

The invention discloses a Modelica integrated three-dimensional scene simulation system; a Modelica multidisciplinary simulation interface module is connected with a Modelica multidisciplinary simulation module, processes and monitors Modelica simulation status signal and data output; a message queue module sets up message queues communicated with the Modelica simulation module and scene object motion control; a message scheduling module is used for ensuring the real-time property of the system; the scene object motion control module generates a motion control instruction of a three-dimensional simulation scene and needed motion parameters of a visual module; a three-dimensional simulation scene module sets up scene trees according to a lead geometry file; and the visual module conducts rendering through the scene image and effective commands by adopting three-dimensional scene simulation software. In the invention, the three-dimensional scene simulation and multidisciplinary simulation are organically integrated, so that a high-degree simulation environment based on physical behavior can be established.

A method for measuring transverse and longitudinal inclinations of teeth includes the steps of 1, performing three-dimensional simulation model reconstruction; 2, selecting reference points, for a simulation model, drawing dental arch reference points FA and basal bone reference points AP at incisor teeth and first molars in left and right lower jaws in the simulation model, respectively; 3, establishing a coordinate system, defining a midpoint among four points FA31', AP31', FA41' and AP41' as an origin O of the coordinate system, defining a midpoint among four points FA36', AP36', FA46' and AP46' as a point Y, defining a line OY as an axis y, using a plane formed by a mesial contact point connecting to the incisor teeth in the lower jaw and mesial buccal cusps of the left and right first molars, as a plane xy, namely an occlusal plane; and 4, measuring transverse and longitudinal inclinations of teeth. The method has the advantages that observation is direct, detection is convenient and results are accurate.

It is an optical fiber strain three-dimensional mock test bench, which comprises separately two to three planes, wherein one of them is fixed and other each plane has at least rotary driving part that is hand or electrical crank handle. It is to drive the rotary driving part to make the plane move or slide or to move on the chute or slide board. The optical fiber is fixed on the plane and through the location of the three-dimensional move of the plane; the test bench is located with displacement meter and Brillouin diffusion light time-domain reflection meter, which make the measured signals respond to the optical fiber deformation displacement to measure the sensitivity or accuracy of the measurement to the local structure deformation of the distributed optical fiber sensor system. The test bench in this invention so can discover the layout method of the sensor optical fiber and the research of the distributed optical fiber sensor and provides necessary experiment base for the distributed optical sensor technique applied on the engineer practice.

The invention discloses an anchoring simulation experiment device for a coal mine tunnel side anchor bolt or an anchor cable. The anchoring simulation experiment device comprises an experiment platform, a pressurizing mechanism and a simulation experiment box, wherein the experiment platform comprises a rectangular framework, an experiment panel and four supporting plates; the four supporting plates are vertically arranged and are enclosed into a cuboid structure; anchoring holes are formed in the bottom of two sides of each supporting plate. The anchoring simulation experiment device disclosed by the invention is an experimental device which can simulate the supporting of the tunnel side anchor bolt or anchor cable in a three-dimensional state; after the three-dimensional simulation experiment platform is equipped with prepared similar materials, the anchor bolt or the anchor cable can be driven into a simulation experiment box body in front of the experimental platform by a roof bolter through limiting holes for controlling row spacing of the anchor bolts or the anchor cables on an anchoring hole space control baffle; under laboratory conditions, the anchoring process of the anchor bolts or the anchor cables with different pore diameters and row spaces at the coal mine tunnel side is simulated, which promotes the research on the supporting of the tunnel anchor bolt or the anchor cable.

The invention relates to a small-diameter permanent-magnetic spherical polishing head with uniform distribution of a magnetic field and a design method for optimizing structural parameters of the same, which relates to a polishing head and a structural parameter optimizing method thereof, and solves the problem of the traditional small-diameter permanent-magnetic spherical polishing head that the magnetic field is nonuniform to distribute and adsorption thickness and strength of magnetorheological fluid are inconsistent. The polishing head is of a symmetric structure and consists of a ball head and a cylindrical ball rod, wherein the center on the tail end of the ball rod is provided with an assembling hole, the front end of the ball rod is fixedly provided with the ball head, the ball head is one part of a ball body, and the outer surface of the junction between the ball rod and the ball head is provided with an annular groove. The optimizing method is characterized in that finite element analysis is conducted by adopting simulation software to simulate according to a three-dimensional simulation model of the polishing head and a working environment when the polishing head is used for polishing to obtain a distribution uniformity error of magnetic intensity surrounding the polishing head, and the optimization is completed when the error is smaller than 5 percent. The polishing head is applicable to the magneto-rheological machining of small curvature radius and specially-shaped surfaces.

The embodiment of the invention discloses a method, device and equipment for carrying out three-dimensional reconstruction on a two-dimensional image and a storage medium, and belongs to the technicalfield of image processing. The method comprises steps of obtaining a two-dimensional picture set; performing feature point extraction on a single picture in the two-dimensional picture set to obtaina feature point set; obtaining the size of the picture and the position information of the feature points in the feature point set in the corresponding picture; acquiring position information of the feature points in a world coordinate system based on an OpenCV camera calibration method; based on an LSD straight line detection method and the position information of the feature points in the worldcoordinate system, obtaining a horizontal line segment in the picture; constructing a three-dimensional grid chart corresponding to the picture based on a constraint Delaunay algorithm; and combiningthe three-dimensional grid diagrams constructed by the pictures in the two-dimensional picture set to obtain a three-dimensional surface model of the object, thereby completing three-dimensional reconstruction. According to the invention, three-dimensional simulation reconstruction can be carried out on the two-dimensional picture rapidly and accurately; and the manpower and material resource consumption during three-dimensional reconstruction can be reduced.

The invention discloses anANSYS-based multi-field coupling stress distribution simulation method for a high-temperature carbonization furnace and relates to the technical field of design analysis methods of high-temperature carbonization furnaces. The technical problem that the stress characteristics of different furnace chamber materials cannot be tested in the design stage of a high-temperaturecarbonization furnace in the prior art is solved. According to the adopted scheme, the method comprises the steps that establishing three-dimensional simulation model, respectively transmitting the fluid calculation domain and the structure calculation domain to a Blocking module of ICEM software and Mesh software to carry out mesh generation; setting in a FLUENT module of ANSYS software; transmitting data to ANSYS software; importing a temperature distribution result in an Imported Load option to obtain a temperature distribution result; carrying out simulation operation in the Solution option to obtain stress distribution characteristics of the muffle structure at different temperatures; under the same setting condition, judging the stress distribution state of the high-temperature carbonization furnace at different temperatures and airflow velocities by setting different working temperatures and airflow velocities to repeatedly carry out simulation calculation for multiple times, sothat the structural performance of the furnace chamber can be better predicted, and the basis for designing the muffle chamber structure and operation process parameters of the high-temperature carbonization furnace is provided.

The invention belongs to the technical field of power cable construction, later operation and maintenance management, and particularly relates to a power cable management method. The defect that an existing two-dimensional power cable management system cannot meet visualization and refinement requirements is overcome. The invention discloses a power cable management method, and the method comprises the following steps: S1, carrying out the precise positioning of a cable work well, ancillary facilities, a cable channel and a cable track through a three-dimensional laser scanning technology, forming three-dimensional data, and forming a three-dimensional simulation informatization platform of a power cable management system; and S2, enabling the power cable management system to run through the full life cycle management of the guidance project. The power cable management method provided by the invention has the beneficial effects that three-dimensional analogue simulation is adopted to fuse each specialty into the same three-dimensional system, information sharing is realized, communication obstacles among the specialties are broken, cooperative follow-up is realized, a convenient communication platform is provided for power cable management, and project realization is promoted.

The invention relates to a method and a device for simulating formation temperature in a multi-element thermal fluid injected oil extraction three-dimensional simulation test. A model body is fixed in a hyperbaric chamber; thermocouples are distributed in the hyperbaric chamber to be connected with a computer; two electric heating coils are positioned on upper and lower inner walls of the hyperbaric chamber and are connected with two upper and lower temperature controllers one outside the hyperbaric chamber; and two circulating fluid coils are positioned on the upper and lower inner walls of the hyperbaric chamber and are connected with two upper and lower refrigerating devices with a compressor and two temperature controllers two, which are positioned outside the hyperbaric chamber, respectively to form two upper and lower enclosed circulation loops. Air ducts are arranged in end covers on two sides of the hyperbaric chamber; two magnetic stirrers are positioned on the end covers on two sides of the hyperbaric chamber; and blades of the magnetic stirrers are arranged in the air ducts of the hyperbaric chamber and pass through the end covers of the hyperbaric chamber to be connected with a motor outside the hyperbaric chamber through a motor shaft. The method and the device have the advantages of compact system structure, uniform and stable simulated temperature field, wide range of the simulated temperature, quick temperature rise / reduction process, and low energy consumption.

The invention provides a three-dimensional (3D) field intensity coverage simulation system for realizing wireless network communication. The three-dimensional field intensity coverage simulation system comprises a planar graph floor 3D modeling module, a 3D data information reading module, a field intensity calculating module and a field intensity forecast data displaying, analyzing and counting module. Due to corporation among the modules, field intensity simulation before and after the design of wireless network communication 3D field intensity coverage is realized, the deficiency of the conventional two-dimensional simulation system is made up, and simulation for space stereoscopic data is realized; furthermore, the number of acquired data is large, the forecast precision is high, and a simulation result and an actual situation can be matched with each other efficiently.

The invention discloses a two-dimensional simulation monitoring method used for replacing nuclear rods. The two-dimensional simulation monitoring method is used for nuclear rod replacing monitoring, and comprises following steps: (1) two-dimensional data of nuclear rod replacing related equipment is acquired, and nuclear rod replacing simulation images are obtained based on the two-dimensional data; (2) encoder information detected by a pull wire encoder of a new fuel elevator is acquired in real time, the encoder information is converted into height data of the new fuel elevator, and the nuclear rod replacing simulation images are updated based on the height data; and (3) the nuclear rod replacing simulation images are displayed. Compared with the prior art, the two-dimensional simulation monitoring method enables operators to know about specific processes of nuclear rod replacing via the nuclear rod replacing simulation images, security of nuclear rod replacing is improved. The invention also discloses a corresponding two-dimensional simulation monitoring device used for replacing nuclear rods.