267 results about "Virtual experiment" patented technology

The invention provides a cloud-based system management training platform architecture which comprises an application layer, a middleware layer, a scheduling layer and a resource layer, wherein the application layer is used for providing an interactive interface for a user so as to realize information interaction between an experimental platform and the user; the middleware layer comprises a processing engine, wherein the processing engine is used for processing an operation request of the user, which is submitted by the application layer, converting a processing result into a resource scheduling request and sending a resource allocation request to the scheduling layer; the scheduling layer is used for invoking virtual machine software to establish a virtual experiment environment through a cloud management platform; and the resource layer comprises a physical host, a storage server and physical network equipment. The cloud-based system management training platform architecture can provide basic conditions of an experiment for teachers and students anytime and anywhere. Meanwhile, the virtual experiment platform is low in maintenance cost, high in safety, simple in setting operation in a laboratory and low in time consumption.

The invention relates to a visual rapid design and verification control teaching experimental system, which belongs to the technical field of automation special teaching experiments, the system comprises an electromechanical combined simulation system and a control system rapid forming and verification system, wherein the electromechanical combined simulation system comprises a mechanical design subsystem, a 3D visual simulation subsystem, an experimental solution subsystem and an integrated development environment subsystem, and the control system rapid forming and verification system comprises a moving control subsystem, the experimental solution subsystem and the integrated development environment subsystem. The visual rapid design and verification control teaching experimental system uses a virtual experiment simulation verification algorithm, after using graphic editing environment to replace corresponding interface modules, real time modes are automatically produced and are compiled, connected, loaded and automatically operated.

A virtual fabrication environment for semiconductor device structures that includes the use of virtual metrology measurement data to optimize a virtual fabrication sequence is described. Further, calibration of the virtual fabrication environment is performed by comparing virtual metrology data generated from a virtual fabrication run with a subset of measurements performed in a physical fabrication environment. Additionally, virtual experiments conducted in the virtual fabrication environment of the present invention generate multiple device structure models using ranges of process and design parameter variations for an integrated process flow and design space of interest.

The invention discloses a method and a system for realizing remote modern interacting educational service for digital home. The system comprises a set-top box, a system managing module, an educational administration managing module, a student module, a teacher module, a virtual experiment module, an evaluation module, a service ordering module, an expense paying module; the student module is utilized to provide service for the students; the teacher module is utilized to provide curriculum teaching management for the course teachers; the system managing module is utilized to deal with service logic of the system, schedule educational resources in a unifying way, and manage all modules in the system in a unifying way; the educational administration managing module is utilized to serve the student module and the teacher module; the evaluation module is utilized to feed back information between the students and the teachers; the virtual experiment module is utilized to provide virtual laboratory instruments for students to carry out experiments. The invention realizes remote modern interacting educational service for digital home, in particular realizes virtual experiment function for digital home.

The invention particularly relates to a shared laboratory virtual simulation method comprising the following steps that three-dimensional modeling of laboratory equipment is performed so as to generate a corresponding three-dimensional model; a target virtual experiment scene is generated according to a selection instruction transmitted by the user; the environmental parameters of the target virtual experiment scene are adjusted according to an environment control instruction transmitted by the user; and the interactive action of the user and the three-dimensional model is acquired, the three-dimensional model, the interactive action and the corresponding experiment effect of the interactive action are simulated in the target virtual experiment scene, and an experiment report and experiment scores are generated. Physical 3D modeling of the laboratory equipment is performed and virtual simulation operation is realized so that combination of the virtual reality technology and the concrete experiment scene can be realized, the operation process and the result of the concrete experiment can be familiarized through the virtual simulation experiment and the fidelity is high; meanwhile, the intelligent control technology is fused in the virtual reality so that intelligent control of the environment can be realized, the application requirements of different experiments can be met and the range of application of the shared laboratory virtual simulation method can be enhanced.

The invention discloses a method for constructing and demonstrating the teaching content of an open type virtual experiment. The method is characterized by comprising the following steps: 1, acquiring or manufacturing virtual experiment component data by a user and modeling virtual experiment components by utilizing the data, wherein the data comprises display data and parameter data; 2, storing all virtual experiment component models into a virtual component library; 3, selecting required virtual experiment component models from the virtual component library according to the requirement of the user and building an experiment scene by utilizing the virtual experiment component models; and 4, setting operating parameters of the experiment scene, operating the experiment scene, transmitting logic information generated by operation of the experiment scene to a calculation module and dynamically demonstrating the calculation result. By the method, the open property of the virtual teaching experiment is improved, and the user can increase the virtual experiment components as required and set the operating parameters of the experiment scene to perform the virtual experiment.

The invention relates to a method of constructing a virtual experiment teaching scene based on an image material. The method mainly comprises the following steps: obtaining an image object of a teaching experiment instrument by using an interactive image object extracting method based on a geodesic line; rapidly modeling vivid and reusable virtual experiment components by using the image object of the teaching experiment instrument and a simple geometric pattern element, and adding the virtual experiment components into a multidisciplinary virtual experiment component library; on the basis of initialization of the virtual experiment teaching scene, searching the required virtual experiment components from the virtual experiment component library according to a user requirement, combining the searched virtual experiment components to an initial virtual experiment teaching scene, and editing the logic attribute and appearance attribute of the selected virtual experiment components in a visual form; in the virtual experiment teaching scene, interactively pointing the connection relation between the virtual experiment components by a user, automatically constructing and visualizing the connection relation by using a connection line generation algorithm based on equivalence connection so as to finish the construction of the virtual experiment teaching scene.

The invention discloses an automatic quick wiring method applied to electric and electronic virtual experiment platforms. The automatic quick wiring method comprises the following steps of: firstly, initializing experimental platform information; secondly, finding a wiring path from any starting point to any binding post by using the experimental platform information established in the first step and generating a source path of a lead starting point; thirdly, generating a path result by using the start point and an end point; and fourthly, acquiring the lead shape and finishing the wiring operation. According to the method, the defects of troublesomeness in operation and messy wiring result in a manual wiring mode can be overcome; meanwhile, certain user interaction experience is ensured; the real-time property of the operation requirement for the virtual experiment can be ensured; the time consumption and space consumption in the wiring process are lower than those of other traditional methods; in addition, the operation mode has the characteristic of convenience and visuality. The invention has stronger generality and portability of the platform and can be used for operating on various platforms.

The invention relates to a method for dynamic sea surface laser pulse wave beam echo simulation. The method for dynamic sea surface laser pulse wave beam echo simulation comprises the following steps that according to a sea spectrum statistic model, a dynamic sea surface is generated by means of the reverse-FFT technology, and the parameters such as the wind speed, the wave height and the sea wave period are considered through the model; space energy distribution and the pulse shape of each emitted laser wave beam are measured, space-time distribution of any laser wave beam is obtained through fitting, and section spatial light intensity distribution at any distance is determined based on energy conservation; a laser radar wave beam back scattering echo radar equation is established based on the radiometry, rough surface processing is conducted on a water surface element, and the water surface element is expressed through a bidirectional reflection distribution function; drawing, coloring, rendering, real-time animation, hidden-line elimination and clipping of the scene are completed based on a computer graphic base OpenGL. The method for dynamic sea surface laser pulse wave beam echo simulation can be applied to different sea condition model machine dynamic intersection virtual experiments, facilitate development of sea surface pulse echo scattering mechanism study, and save a large amount of cost.

The invention relates to a method for building a virtual experiment information representation model, which comprises the following steps of: (1) building a virtual device list and a virtual experiment operating platform on a client side; (2) building a device object model corresponding to an actual physical device, and adding a virtual device on an interface of the virtual experiment operating platform graphically; (3) setting a physical attribute and a display attribute of the built device object model, connecting pins of the device object model, generating a connection model corresponding to a connecting line, and constructing the device object model and the corresponding connection model to form an experiment scene; (4) initiating simulation, and sending the experiment scene to a server side; (5) mapping the device object model in the experiment scene into a corresponding simulation device object model by the server side, and generating a simulation scene; (6) calling a simulation module by the server side, analyzing and operating the simulation scene, and transmitting a simulation result model back to the client side; and (7) analyzing the received simulation result model by the client side, and carrying out graphic display on data. The method provided by the invention can be widely applied to multi-disciplinary virtual experiments.

The invention discloses a particle flow simulation system and method on the basis of GPUs. The method includes: generating particle information according to particle modeling information input by a client, and generating geometry information; receiving the particle information and the geometry information, determining that which GPUs in which computational nodes are used according to the number of particles and the number of idle GPUs in the computational nodes, determining that which particles are calculated by which GPUs in which computational nodes according to the determined number of the GPUs and distribution condition of the particles in space, and performing distribution according to determined results; calculating stress of each particle caused by impact of the particles in a plurality of GPUs in a parallel mode, and working out accelerated speed further so as to simulate particle flow; showing simulation results. According to the particle flow simulation system and method, high-density particle virtual experiment simulation can be achieved, energy consumption is reduced, and meanwhile calculation efficiency is improved.

The invention discloses a three-dimensional virtual experiment training system which comprises a virtual training software system. The virtual training software system comprises a virtual teaching unit, a display interaction interface unit and an evaluation mechanism unit. The virtual training software system comprises a virtual teaching unit which comprises a device disassembly and assembly course module and a skill training course module. The device disassembly and assembly course module comprises a device disassembly and assembly course database. The display interaction interface unit comprises a three-dimensional model module, a scene construction module and a user interface framework construction module. The evaluation mechanism unit comprises an evaluation standard database and a practical training evaluation module. The evaluation standard database stores standard operation method steps under various kinds of scene information. According to the invention, a virtual experiment technology is used to establish the three-dimensional virtual experiment training system; a visual device dynamic operation process is provided for students; the demonstration function of disassemblingand assembling a device as needed is realized; and the effect of skill training is improved.

The invention particularly relates to a PCI (programmable communications interface) aviation serial bus board and a dynamic data loading processing method and aims to solve the problems of complicated hardware design, poor data processing capability, low speed, poor instantaneity and flexibility of conventional PCI communication boards. The PCI aviation serial bus board is used for processing MIL-STD-1553B and ARINC429 bus data in the virtual test system and can dynamically adjust data processing algorithms in virtual test. Processing efficiency of the MIL-STD-1553B and ARINC429 bus data in the virtual test can be effectively improved, and instantaneity of the virtual test system is improved. By the dynamic data loading processing method, programs can be loaded dynamically, so that flexibility and using value of the board are high. The PCI aviation bus board and the dynamic data loading processing method are applicable to virtual test.

The invention relates to a method for achieving an interactive integration experimental platform of a microscopic traffic simulator and a driving simulator. Data of the driving simulator are imported into the microscopic traffic simulator to control an automobile in the microscopic traffic simulator, and the integration of the microscopic traffic simulator and the driving simulator is achieved. The method comprises the following steps: (1) building a traffic environment required by an experiment in the microscopic traffic simulator; (2) extracting driver operation data in the driving simulator; (3) enabling the driver operation data to be read and stored by the microscopic traffic simulator, changing operating parameters of a test automobile, enabling the test automobile to travel according to the operation of a driver, and enabling the other automobiles in the simulation environment to travel according to an inherent simulation strategy in the microscopic traffic simulator; and (4) extracting relevant data, and carrying out experimental evaluation. According to the method for achieving the interactive integration experimental platform of the microscopic traffic simulator and the driving simulator, good simulation can be carried out on real road traffic circulation states, a virtual experiment scene which is more real is provided for the drivers, applied range of the driving simulator is outstandingly improved, and reliability and accuracy of the driving simulation experiments are improved.

The invention relates to a method for simulating a mechanism motion virtual experiment based on mechanical principles of members. The method comprises the following steps of: 1) establishing the logic models of basic members in a uniform modeling language mode, namely Modelica, establishing the three-dimensional geometric models of the members by using three-dimensional modeling software, and integrating the three-dimensional geometric models of the members with the logic models of the members to establish a complete experimental member model which is described in extensible makeup language (XML); 2) constructing the experiment scene Modelica model of the virtual experiment, reading corresponding member files according to the members which are required by the experiment, selecting the three-dimensional models of the members, and assembling interfaces which are required to be connected among the members; 3) after the assembly is finished, setting simulation parameters, and starting the compilation solving simulation of the scene model; and 4) processing the data of a solving result file, and driving the visualization of a mechanism three-dimensional model in the assembly simulation environment of the virtual experiment. Compared with the prior art, the method for simulating the mechanism motion virtual experiment based on the mechanical principles of the members has the advantages that: boring theoretical knowledge becomes vivid and easy to grasp and has high universality, and the like.

The invention discloses a hydraulic transmission type fruit tree flower thinning machine based on machine vision. The hydraulic transmission type fruit tree flower thinning machine based on the machine vision comprises a central controller, a hydraulic device, an image acquisition device and a flower thinning device, wherein the central controller is connected with the hydraulic device and the image acquisition device and drives the flower thinning device through the hydraulic device. The flower thinning device comprises a rotary shaft and flower thinning rubber strips arranged on the rotary shaft, wherein the upper end of the rotary shaft is fixedly connected with an upper support cross beam, the lower end of the rotary shaft is fixedly connected with a lower support cross beam, upright support columns are further arranged between the upper support cross beam and the lower support cross beam, and the flower thinning device is connected with a transverse moving guide rod through a fixed shaft. The invention further discloses a flower thinning method based on stochastic model virtual experiments and the machine vision. Through the hydraulic transmission type fruit tree flower thinning machine based on the machine vision and the flower thinning method, a large number of repeated filed trails for determining job parameters of the flower thinning device are avoided, unnecessary testing processes are reduced, and therefore economic efficiency of a fruit grower is improved, and the enthusiasm of the fruit grower for planting fruit trees is protected.

This invention provides one handle virtual experiment chamber system, which comprises signal control process unit and signal control process unit connected input unit, memory unit and display unit to receive user input and operation orders, wherein, the signal control process unit further comprises central processor unit and one virtual experiment platform module for ratification operation. This invention provides one handle virtual experiment chamber realizing method.

The invention relates to a virtual experiment teaching oriented dynamic component visualization method which aims to realize the modeling and visualization of an experiment component with dynamically-changing appearance and strong interaction in the virtual experiment teaching process. The method mainly comprises the following steps of: (1) modeling the dynamic component in a virtual experiment teaching environment, specifically comprising the steps of obtaining the image information describing the dynamic component by use of image division, and obtaining the graphic information describing the dynamic component by use of interactive geometric configuration and the like to finish the modeling of the dynamic component; and (2) visualizing the dynamic component in the virtual experiment teaching environment, specifically comprising the steps of drawing the dynamic component according to the appearance attributes in the virtual experiment teaching scene and the like to visualize the experiment result to the user and dynamically respond to an interaction event and update the visualization result. The method provided by the invention can be widely applied to the fields of virtual experiment teaching, distance education and training and the like, and realizes visualization of the dynamic experiment component in the virtual experiment teaching.

The invention relates to an OSG-based electric-electronic virtual experiment simulation system, which comprises a virtual experiment environment construction device, a virtual experiment environment-invoking device, a parameter-setting device and an experiment simulation device; the virtual experiment environment construction device is used for constructing virtual experiment environments corresponding to different experiments; the virtual experiment environment-invoking device is used for invoking a corresponding virtual experiment environment according to experiment operation requirements; the parameter-setting device is used for setting corresponding parameters in the virtual experiment environment according to the related content of an experiment; and the experiment simulation device is used for receiving the set experiment parameters, mathematically solving an experiment result according to a mathematical model for experiment solution and returning the result to a foreground for display. Compared with the prior art, the system can rapidly and efficiently carry out virtual experiment development and has the advantages of high scalability, high transplantability and the like.

The invention is suitable for a virtual experiment table which is realized mainly through a 3D holographic imaging technology and a somatosensory technology. Specifically, the invention provides a virtual experiment table which can almost completely replaces an existing student experiment table, and students can experience operation processes of replication experiments in person, and according to operation of the students, the virtual experiment table shows different experiment results for the students. The virtual experiment table has six main functions of 3D imaging, motion identification, face identification, experiment selection, operation error correction, and experimental demonstration, so as to solve problems in conventional experiment teaching processes that students are lack of operational ability and deep understanding for various experiment phenomenon, and that consumption of various experimental equipment is large.

The invention provides an experiment simulation method based on a virtual reality technology, and relates to the technical field of virtual reality. The method comprises that a virtual experiment scene including a background environment and experimental properties is selected; a user corresponds to a preset position in the virtual experiment scene; according to the preset position and the virtual experiment scene, an image to be displayed is determined and displayed; and an experimental property using instruction of the user is obtained, the experimental property used by the user is determined according to the experimental property using instruction, the image to be displayed is adjustment according to interaction between the experimental properties, and an experiment process is simulated. The experiment scene is simulated, so that students can experience an operation process of the experiment without consumables of the experiment, and the cost is reduced.

Disclosed is a virtual experimental platform of an unmanned underwater vehicle mission planning system and an experimental method. The experimental platform comprises a virtual experimental scene display terminal, a virtual experimental user operating terminal, a desktop type work station, a principle computer control module and an unmanned underwater vehicle simulation module; the desktop type work station comprises a peripheral component interconnect express (PCI Express) high-performance graph acceleration processing card, a PCI Express disk array card, and a plurality of PCI Express data acceleration processing cards; the principle computer control module is integrated and operates in the desktop type work station, and the unmanned underwater simulation system module is integrated and operates in the PCI Express data acceleration processing card in the desktop type work station. The experimental method includes experimental methods of 'full digital virtual experiment' and 'half material virtual experiment' on the basis of the virtual experimental platform. The virtual experimental platform of the unmanned underwater vehicle mission planning system and the experimental method have the advantages of simple structure, simple and convenient operation, high function integration, wide application range, high experimental efficiency, and the like.

The invention provides a remote automatic correcting method for circuit virtual experiments, which comprises the following steps of: resolving input standard answer experiment scripts to obtain a set of apparatus score points and a set of circuit connection score points; selecting the required score points from the score point sets, and setting a score corresponding to each score point, wherein after the setting is finished, the score point is a score rule and a plurality of score rules form a score rule base; resolving virtual experiment scripts to be corrected into apparatus objects and apparatus port objects, and converting the apparatus objects and the apparatus port objects into factual data; judging whether the factual data are matched with the score rules in the score rule base, and recording the matching result of each score rule during matching; and accumulating the scores of the successfully matched score rules to obtain a total score of experiment correction, and outputting the matching results and the scores serving as corrected score sheets.

The invention relates to a virtual experiment platform system and method for crowd evacuation feature testing and drilling, in particular to a virtual experiment platform system used for crowd evacuation feature testing and evacuation drilling and based on a virtual reality technology and a microscopic analogue simulation technology, and relates to the technical field of computer virtual application. According to the virtual experiment platform system and method, the evacuation features of crowds under different scene conditions are tested through construction of a computer virtual environment. The virtual experiment platform method comprises the steps that firstly, a crowd evacuation model is built in a computer visual programming environment; secondly, the operation that movement of a controllable virtual leading actor in the crowd evacuation model is controlled through a computer input device is achieved; finally, various virtual evacuation scenes are achieved by changing the building structures and the visual fields of the crowds in the crowd evacuation model and leading an emergency product in. A testing experiment is conducted on a built virtual experiment platform in a participation mode, the evacuation features of the crowds on different scenes can be tested and analyzed, the virtual experiment platform can be applied to evacuation drilling and training when an emergency happens, and the virtual experiment platform system and method have the advantages that the crowd evacuation feature testing and drilling can be easy and can be repeated.

The invention relates to an ordnance soldier vocational skill identification virtual examine and training system. The system comprises a theoretical knowledge training and examine platform used for providing an autonomous training mode and a simulation examination mode for basic theoretical knowledge and specialized theoretical knowledge, a basic skill simulation training and examine platform used for providing basic skill autonomous training and simulation examination for soldiers in various types in professional ordnance, a specialized skill virtual training and examination platform used for providing specialized skill autonomous training and simulation examination for the soldiers in the various types in professional ordnance, and further comprises an item bank management platform, wherein virtual interaction operation of basic skill experiments can be carried out by an operator on the virtual experiment platform to improve self basic skill abilities, and specialized skill virtual interaction operation can be carried out by the operator in virtual equipment and parts to improve self specialized skill abilities. Through the system, solid bases can be realized for practical examine on theoretical and basic skill operation and specialized skill operation of professional skill identification for the soldiers.

The invention discloses a virtual construction system of a full-face tunneling boring machine (TBM), which belongs to the field of the application of a full-face TMB. The system comprises a stereoprojection system and an operating console, wherein the stereoprojection system comprises a graphic workstation with a virtual simulation master program, a stereoscopic converter connected with the graphic workstation and a virtual reality display device for display, the virtual simulation master program can display the construction process of the full-face TBM based on a stereomodel, and the operation of the TBM model can be controlled by the operating console. The virtual construction system of a full-face TBM can be used for virtual experiment and operation training, thereby solving the problem that the experiment and operation training cost is higher in case of using the real TBM in the existing full-face TBM field.

The embodiment of the invention discloses a method for establishing a visual virtual digital circuit. The method comprises the following steps of: S10, establishing a default chip library in a background, and taking a digital logic chip as a design unit; S20, setting a visual chip description unit of the corresponding digital logic chip in the default chip library established in the background, an empty chip slot area, an input control switch area, a logical lamp display area, power input and grounded input in a foreground; S30, establishing a digital circuit by trigging a drag event and a visual connection description; and S40, giving corresponding input control switch signals to trigger the operation process of the digital circuit. By using an XML (Extensible Markup Language) semantic description method of an operation interface and an operation process of a virtual experiment, and applying the multimedia technology means, an experiment operator can store the experimental interface and the experimental process in an XML file so as to achieve the purpose of recording and reproducing the experimental process.

The invention discloses a virtual experiment making method for a convex lens. The method is mainly comprises a video capturing flow, virtual-real fusion flow and an interactive display flow, and particularly comprises the following steps of: making a long wood board with a sliding guide rail, arranging three movable slide blocks on the long wood board, and placing three specified marks on the slide blocks respectively; and capturing the specified marks by using an ordinary camera, calculating the spatial locations and directions of the marks, mapping onto a virtual candle, a lens and an imaging board three-dimensional model respectively, synthesizing a virtual three-dimensional model which is generated in real time and a shot real scene to obtain a virtual-real fusion interactive scene, and displaying an object distance, an image distance and a focus distance in convex lens imaging in real time. The method is applied to middle school physical experiment teaching, and has the advantages of simple equipment, low cost, environmental friendliness and natural interactive behaviors; and a learner can adjust parameters at any time for observing the rule phenomenon of convex lens imaging,so that a good teaching effect is achieved.

The invention relates to a rolling forward-slip measurement virtual experiment method. The method comprises the steps of planning and designing a virtual experiment scheme; acquiring and arranging field experiment data and experiment phenomena; building a 3D scene model of a virtual experiment; obtaining an experiment operation model; obtaining a 3D simulation experiment model in combination with the 3D scene model, the experiment operation model, a database, an experiment learning module and an experiment assessment module; running the 3D simulation experiment model, performing learning of an experiment principle and an experiment method and operation of a repeatability simulation experiment based on a man-machine interaction interface in the 3D simulation experiment model, and recording an operation process of an operator and input and output states of key data; assessing an experiment result by a system through the recorded operation process of the operator and the input and output states of the key data; and recording experiment operation of a user, experiment data and an assessment result in a background database. The method has an excellent visualization effect, high immersion and good interactivity, and the experiment cost and risk are greatly lowered.

The invention relates to an electromagnetic pulse radar echo simulation method in an offshore area. A sea spectrum of an offshore area is established; an ocean surface grid region under a pulse Doppler system is determined and calculated; a scattering field vector of a rough surface element in the ocean surface grid region is calculated by using an electromagnetic algorithm; weighted calculation and simulation of influences on scattering conditions of all parts of the rough surface by a transceiver antenna gain are carried out; and with consideration of the antenna gain, a radar beam back-scattering echo radar equation is established, superposition calculation of scattering field vectors of rough surface elements in the ocean surface grid region is carried out, and thus a radar Doppler echo simulation signal is obtained. Therefore, the need for the electromagnetic property of the coastal environment by the offshore radar system design can be met; lots of manpower and materials are saved by compared with the practical marine measurement; and the reference can be provided for radar detection and anti-jamming algorithm design, parameter selection and performance evaluation. Therefore, the method not only can be used for different sea situation prototype dynamic meeting virtual experiment in an offshore area but also can be used for developing electromagnetic pulse echo scattering mechanism study of the offshore surface.