CN113160362A - Resistance strain measurement experiment virtual demonstration implementation method and system - Google Patents
Resistance strain measurement experiment virtual demonstration implementation method and system Download PDFInfo
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Abstract
The invention discloses a method and a system for realizing virtual demonstration of a resistance strain measurement experiment, which comprises virtual experiment scene creation and virtual experiment demonstration, wherein the virtual experiment scene creation comprises the following steps: establishing a virtual experimental equipment model, and importing the virtual experimental equipment model into a 3D development platform; obtaining initial coordinate parameters corresponding to the virtual experimental device model in a virtual experimental scene, and keeping the arrangement of the virtual experimental device model consistent with that in a real experimental scene in proportion; the virtual experiment demonstration comprises the following steps: and adding key frames on a time axis of an animation editor of the 3D development platform, and correspondingly inputting the moving coordinate parameters of the virtual experimental equipment model in the experimental operation step in each key frame, so that each virtual experimental equipment model moves according to the moving coordinate parameters along with the movement of the time axis. The invention can be used as a supplement for field experiment teaching, for students to be familiar with experiment operation steps and equipment using methods before class, and can also be used as a network course to replace normal experiment teaching.
Description
Technical Field
The invention relates to a resistance strain measurement experiment virtual demonstration implementation method and system, and belongs to the field of experiment mechanics virtual teaching design.
Background
The virtual reality technology is widely regarded and applied at home and abroad along with the rapid development of the computer and internet technology, breaks through the barrier between the virtual reality and the reality, virtually reproduces the real things by the computer graphics technology, has wide application prospect, and mainly relates to the fields of education, medicine, architectural design, military, aerospace and the like. Especially in the education field, utilize virtual reality technique to establish virtual laboratory, very crucial to overcoming traditional experiment teaching and receiving the teaching place and the time limit scheduling problem. Therefore, the virtual realization of experiment courses such as experiment mechanics and the like is realized, and the virtual realization method has very important practical significance for improving the experiment teaching effect.
The resistance strain measurement method (short for electrical measurement) is the most widely applied method in the experimental stress analysis method. The method is to measure the surface strain of the member by using a strain sensitive element (a resistance strain gauge), and then obtain the stress state of the surface of the member according to the relationship between the strain and the stress, thereby carrying out stress analysis on the member.
At present, the experiment of experimental mechanics electricity series survey mainly adopts traditional teaching form, accomplishes through the field experiment teaching, and this kind of teaching method can accomplish the teaching outline course requirement, but because mechanics experimental facilities are loaded down with trivial details, and the operating technique requires highly, in the actual experiment teaching, the ubiquitous student does not know how to use experimental facilities, experimental step and omits scheduling problem. Meanwhile, due to the limitation of experimental sites and teaching time, in order to finish the contents of the course teaching outline, links for students to think and explore are often compressed, experimental teaching is finished through teaching-aid demonstration operation, it is difficult to ensure that each student really masters experimental operation steps and experimental equipment measuring and using methods in limited learning time, and the experimental teaching method becomes a key problem for experimental teaching course innovation such as experimental mechanics.
Disclosure of Invention
In order to solve the problems, the invention creates a virtual experiment scene with high reduction degree, completes the virtual realization of the experiment of the electrical mechanics system, solves the problem that the traditional mechanics experiment is limited by the experiment field and the teaching time, can be used as the supplement of the on-site teaching of the mechanics experiment, and can also be used as the network training course of the electrical mechanics experiment.
A method for realizing virtual demonstration of a resistance strain measurement experiment comprises the following steps:
creating a virtual experiment scene and demonstrating a virtual experiment, wherein the virtual experiment scene creating comprises the following steps:
establishing each virtual experimental equipment model, and importing each virtual experimental equipment model into a virtual scene project of a 3D development platform;
obtaining initial coordinate parameters corresponding to each virtual experimental equipment model in the virtual experimental scene through a mapping relation between the virtual experimental scene and the real experimental scene, so that the arrangement of the virtual experimental equipment models is in proportion with that in the real experimental scene;
the virtual experiment demonstration comprises:
adding key frames on a time axis of an animation editor of the 3D development platform, and inputting movement coordinate parameters of the virtual experimental equipment model in the virtual experimental scene in the experimental operation step corresponding to each key frame, so that each virtual experimental equipment model moves according to the movement coordinate parameters along with the movement of the time axis.
Optionally, the virtual character is driven to move and operate through the change of the position coordinates of the virtual character and the change of the position coordinates of the limbs of the virtual character, and each virtual experimental equipment model is also provided with a reduced copy, each reduced copy is bound on the palm of the virtual character,
and adding a zoom key frame in the animation editor, and performing a zoom operation on the zoom key frame so that when the virtual character picks up a certain virtual experimental equipment model, a zoomed-out copy of the certain virtual experimental equipment model is zoomed in, and the certain virtual experimental equipment model is zoomed out.
Optionally, the time interval between the reduction of the certain virtual experimental equipment model and the enlargement of the reduced copy of the virtual experimental equipment model is less than or equal to 1/60 s.
Optionally, animation events are further added in the animation editor, and a script function for calling an audio file is bound for the animation events, so that after a trigger condition is reached, the script function calls and executes the audio file, and the audio file includes explanation audio for the experimental operation steps.
Optionally, the adding an animation event in an animation editor and binding a script function for calling an audio file for the animation event, so that after a trigger condition is reached, the script function calls and executes the audio file, includes:
adding a sound source and an audio listener on a scene component of a virtual scene item of a 3D development platform;
importing the audio file into a virtual scene project of a 3D development platform, and binding a script function to the virtual scene project;
respectively adding animation events to a plurality of time nodes in an animation editor according to the virtual experiment operation steps;
and setting a trigger condition for triggering the script function in each animation event, so that the audio file is called under the condition that the trigger condition is reached, and the explanation of the experimental process is realized.
Optionally, the virtual experiment scene creation further includes virtual experiment equipment model rendering, where the virtual experiment equipment model rendering includes:
introducing an assembly body and parts of the virtual experimental device model into 3 DSMAX;
converting each part of a virtual experimental equipment model into an editable network, and using a UV editor to generate a plane UV image of each part of the virtual experimental equipment model;
the plane UV image is led into Photoshop, and positioning assembly processing is carried out on the plane UV image and the rendering outline map;
and creating a material in the 3DSMAX, endowing the planar UV image subjected to positioning and assembling treatment with the material, and applying the material to an assembly body of the virtual experimental device model.
Optionally, the mapping relationship between the virtual experiment scene and the real experiment scene is described as follows: x ' ═ MX, where X ' ═ X ', y ', z ')TFor virtual experiment equipment model in virtual experimentCorresponding coordinates in the scene global coordinate system, X ═ X, y, z)TThe coordinate of the virtual experimental device model in the global coordinate system of the real experimental scene is shown, and M is a transformation matrix.
The invention also provides a system for realizing the virtual demonstration of the resistance strain measurement experiment, which comprises the following components:
the virtual experiment scene building module is used for building a virtual experiment scene and obtaining corresponding initial coordinate parameters of each virtual experiment equipment model in the virtual experiment scene through the mapping relation between the virtual experiment scene and the real experiment scene, so that the arrangement of the virtual experiment equipment models is in proportion with that in the real experiment scene;
and the key frame construction module is used for adding key frames on a time axis of an animation editor of the 3D development platform, and correspondingly inputting the moving coordinate parameters of the virtual experimental equipment models in the virtual experimental scene in the experimental operation step corresponding to the key frames, so that the virtual experimental equipment models move according to the moving coordinate parameters along with the movement of the time axis.
Optionally, the system further comprises a virtual character building module for driving the virtual character to move through the position coordinates of the virtual character and the position coordinates of the limbs of the virtual character, and each virtual experimental equipment model is further provided with a reduced copy, each reduced copy is bound on the palm of the virtual character,
and the key frame construction module is further used for adding a scaling key frame on the time axis of the animation editor, and performing scaling operation on the scaling key frame, so that when the virtual character picks up a certain virtual experimental equipment model, a scaled-down copy of the certain virtual experimental equipment model is enlarged, and the certain virtual experimental equipment model is scaled down.
Optionally, the virtual experimental device model comprises a strain gauge, a static/dynamic strain gauge, an experimental bench, a data acquisition computer and a drilling method residual stress test platform.
Compared with the existing electric measurement experiment teaching and virtual experiment, the invention has the following advantages and prominent effects:
the method is not limited by experimental sites and teaching time, can be used as a supplement for field experiment teaching for students to be familiar with experiment operation steps and equipment using methods before class, and can also be used as a network course to replace normal experiment teaching;
the mapping rendering processing is adopted, the reduction degree of the experimental device model is high, and the virtual experimental scene is real;
introducing virtual characters, adding virtual character experiment operation demonstration, and enhancing the actual guiding function of the virtual experiment;
adding an experiment operation step for voice explanation, restoring a field experiment teaching scene, and enhancing a virtual experiment teaching effect;
the virtual experiment can also read experimental data and perform data processing and analysis, so that the teaching effect and the purpose of a laboratory can be achieved;
repeated learning and utilization can be realized, the teaching cost is low, and compared with the traditional experiment course teaching mode, the interactive and experience performance is stronger, and meanwhile, the learning interest of learners can also be improved.
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The above features and technical advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments thereof taken in conjunction with the accompanying drawings.
FIG. 1 is a flow chart of a virtual demonstration implementation method of a resistance strain measurement experiment according to an embodiment of the invention;
fig. 2 is a flowchart of rendering a virtual experimental device model according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described below with reference to the accompanying drawings. Those of ordinary skill in the art will recognize that the described embodiments can be modified in various different ways, or combinations thereof, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in the present description, the drawings are not to scale and like reference numerals refer to like parts.
The resistance strain measurement experiment mainly comprises the steps of pasting a normal temperature resistance strain gauge, calibrating a displacement sensor and a force sensor, measuring dynamic strain and measuring residual stress by a drilling method. The experimental equipment or device comprises a strain gauge, a static/dynamic strain gauge, an experimental bench, a force sensor, a displacement sensor, a data acquisition computer, an automatic drilling method residual stress test platform and the like; the related experiment process comprises experiment purposes and equipment introduction, experiment equipment using methods and operation cautions, experiment operation step demonstration and data acquisition and analysis.
As shown in fig. 1 and fig. 2, the method for implementing virtual demonstration of a resistance strain measurement experiment of the present embodiment includes virtual experiment scene creation and virtual experiment demonstration, where the virtual experiment scene creation includes:
and step S1, establishing each virtual experimental device model, and importing each virtual experimental device model into a virtual experimental scene project of the 3D development platform.
Specifically, the virtual experimental equipment model can be created by designing parts through CATIA software, performing assembly design on the parts, and finishing adding constraint conditions such as contact and coincidence to obtain the assembled virtual experimental equipment model. The virtual experimental equipment model obtained by the method can meet the requirement that experimental equipment in a virtual scene can move or deform according to the working form in an actual scene, and the reality of a virtual realization effect is enhanced. And other three-dimensional modeling software can be adopted to establish the virtual experimental equipment model, such as PROE, SOLIDWORKS, UG and the like.
The 3D development platform can adopt Unity, which is an easy-to-use game development software platform, has strong functions and excellent cross-platform characteristics, and can realize the arrangement of virtual experiment scenes by utilizing the Unity. Meanwhile, the Unity contains rich functional components, and the animation editor of the Unity can add key frames and modify corresponding parameters (position, rotation angle, scaling and the like) on a time axis to realize animation production.
Specifically, importing each virtual experiment equipment model into a virtual experiment scene project of a 3D development platform, including:
1) creating a virtual experiment scene item in Unity, and adding a light source, a Camera and a sound source in the scene;
2) importing a virtual experiment equipment model (. FBX file) into Unity, and adding the virtual experiment equipment model into the virtual experiment scene item. FBX files are a common model format that supports all major three-dimensional data elements as well as two-dimensional, audio, and video media elements. The model can be obtained by converting a virtual experimental equipment model established by CATIA software.
Step S3, obtaining the corresponding initial coordinate parameters of each virtual experimental device model in the virtual experimental scene through the mapping relation between the virtual experimental scene and the real experimental scene, so that the arrangement of the virtual experimental device models is in proportion with that in the real experimental scene.
The mapping relationship between the virtual experiment scene and the real experiment scene is described as follows: x ' ═ MX, where X ' ═ X ', y ', z ')TCorresponding coordinates of the virtual experiment equipment model in a global coordinate system of the virtual experiment scene, wherein X is (X, y, z)TThe coordinate of the virtual experimental device model in the global coordinate system of the real experimental scene is shown, and M is a transformation matrix.
In the mapping of virtual and real scenes, the origin of the space coordinate system of the real scene can be selected to coincide with the origin of the coordinate system of the virtual scene, and the coordinate axes coincide with each other, so that the transformation matrix is changed
The virtual experiment demonstration comprises:
and step T1, adding key frames on a time axis of an Animation editor (Animation) of the 3D development platform, and inputting the moving coordinate parameters of the virtual experimental equipment model corresponding to the virtual experimental scene in the experimental operation step corresponding to each key frame, so that each virtual experimental equipment model moves according to the moving coordinate parameters along with the movement of the time axis.
When Animation is operated, the virtual experimental equipment model moves according to given coordinate parameters along with the movement of the time axis. Therefore, for the electrical measurement experiment process, only the experiment equipment corresponding to the key experiment operation step node in the experiment process and the corresponding global coordinate parameter of the experiment operator in the virtual experiment scene need to be added in a key frame mode, and other coordinate parameters are obtained by interpolation of the adjacent key frame parameters.
Further, the virtual experiment demonstration may further include a step T2 of performing an experiment demonstration by the avatar. The virtual character is driven to move and operate through the position coordinate change of the virtual character and the position coordinate change of the limbs of the virtual character, and each virtual experimental equipment model is also provided with a reduced copy which is bound on the palm of the virtual character,
and adding a zoom key frame in the animation editor, and performing a zoom operation on the zoom key frame so that when the virtual character picks up a certain virtual experimental equipment model, a zoomed-out copy of the certain virtual experimental equipment model is zoomed in, and the certain virtual experimental equipment model is zoomed out.
The operation steps of the electrical measurement experiment process are multiple, the technical requirement is high, so that detailed operation process demonstration is needed for virtual realization, a virtual character is introduced to perform experiment operation demonstration, and the action realization of the virtual character is mainly realized by setting coordinate parameters corresponding to all parts of the character in a key frame, such as adjusting the angle parameters of the forearm and the upper arm to realize the swinging of the arm; the figure walking exercise effect can be realized by changing the figure position coordinate parameters and the positions and the coordinate parameters of the legs.
The virtual character operation demonstration model relates to the picking up and operation of experiment operators on various experiment equipment in a virtual scene, in an actual scene, the positions of the experiment equipment are kept unchanged before the experiment operators pick up the experiment equipment, but the experiment equipment moves along with the movement of the virtual experiment operators after the experiment equipment is picked up; this may be achieved by providing a reduced copy, and preferably the time interval between the reduction of the certain virtual laboratory equipment model and the enlargement of the reduced copy of the virtual laboratory equipment model is 1/60s or less.
Further, the start, stop, pause, and the like of the Animation can also be controlled by an Animation Controller (Animation Controller).
Further, animation events are added in the animation editor, and a script function for calling audio files is bound for the animation events, so that after a trigger condition is reached, the script function calls and executes the audio files, and the audio files comprise explanation audio of experimental operation steps. Adding and calling commentary audio specifically comprises the following steps:
adding a sound source and an audio listener on a scene component of a virtual scene item of a 3D development platform;
importing the audio file into a virtual scene project of a 3D development platform, and binding a script function to the virtual scene project;
respectively adding animation events to a plurality of time nodes in an animation editor according to the virtual experiment operation steps;
and setting a trigger condition for triggering the script function in each animation event, so that the audio file is called under the condition that the trigger condition is reached, and the explanation of the experimental process is realized.
Further, the virtual experiment scene creating method further comprises the step of S2, the virtual experiment equipment model is rendered, and the processing of the detailed light and shadow fuzzy dynamic state and the like is mainly carried out by using the exhibition UV module in the 3DSMAX, so that the reality of the experiment equipment is improved, and the effect of the virtual experiment scene is ensured. The virtual experiment equipment model rendering comprises the following steps:
introducing an assembly body and parts of the virtual experimental device model into 3 DSMAX;
converting parts of a virtual experimental equipment model into an editable network, and using a UV editor to generate plane UV images of all the parts of the virtual experimental equipment model;
the plane UV image is led into Photoshop, the plane UV image and the rendering outline map are positioned and assembled, and the plane UV image is stored into a TGA file after being processed;
and creating a material in the 3DSMAX, endowing the planar UV image subjected to positioning and assembling treatment with the material, and applying the material to an assembly body of the virtual experimental device model.
The invention also provides a system for realizing the virtual demonstration of the resistance strain measurement experiment, which comprises the following components:
the virtual experiment scene building module is used for building a virtual experiment scene and obtaining corresponding initial coordinate parameters of each virtual experiment equipment model in the virtual experiment scene through the mapping relation between the virtual experiment scene and the real experiment scene, so that the arrangement of the virtual experiment equipment models is in proportion with that in the real experiment scene;
and the key frame construction module is used for adding key frames on a time axis of an animation editor of the 3D development platform, and correspondingly inputting the moving coordinate parameters of the virtual experimental equipment models in the virtual experimental scene in the experimental operation step corresponding to the key frames, so that the virtual experimental equipment models move according to the moving coordinate parameters along with the movement of the time axis.
Further, the device also comprises a virtual character building module which is used for driving the virtual character to move through the position coordinates of the virtual character and the position coordinates of the limbs of the virtual character, each virtual experiment equipment model is also provided with a reduced copy, each reduced copy is bound on the palm of the virtual character,
and the key frame construction module is further used for adding key frames on the time axis of the animation editor, and performing scaling operation on the key frames, so that when the virtual character picks up a certain virtual experimental equipment model, a scaled-down copy of the certain virtual experimental equipment model is enlarged, and the certain virtual experimental equipment model is scaled down.
Further, the virtual experimental device model comprises a strain gauge, a static/dynamic strain gauge, an experimental bench, a data acquisition computer and a drilling method residual stress testing platform.
The system further comprises an explanation setting module, which is used for adding animation events in the animation editor and binding script functions for calling audio files for the animation events, so that after a trigger condition is reached, the script functions call and execute the audio files, and the audio files comprise explanation audios for the experiment operation steps. Adding and calling commentary audio specifically comprises the following steps:
adding a sound source and an audio listener on a scene component of a virtual scene item of a 3D development platform;
importing the audio file into a virtual scene project of a 3D development platform, and binding a script function to the virtual scene project;
respectively adding animation events to a plurality of time nodes in an animation editor according to the virtual experiment operation steps;
and setting a trigger condition for triggering the script function in each animation event, so that the audio file is called under the condition that the trigger condition is reached, and the explanation of the experimental process is realized.
Further, the system also comprises a model rendering module, wherein the model rendering module is used for performing processing such as detailed light and shadow fuzzy dynamic by using a spread UV module in 3DSMAX, so that the authenticity of experimental equipment is improved, and the effect of a virtual experimental scene is ensured. The virtual experiment equipment model rendering comprises the following steps:
importing a virtual experimental equipment model into 3 DSMAX;
converting a virtual experiment equipment model into an editable network, and using a UV editor to generate a plane UV image from the virtual experiment equipment model;
the plane UV image is led into Photoshop, the plane UV image and the rendering outline map are positioned and assembled, and the plane UV image is stored into a TGA file after being processed;
and creating a material in the 3DSMAX, endowing the planar UV image subjected to positioning and assembling treatment with the material, and applying the material to the virtual experimental equipment model.
It should be noted that the experimental equipment and devices involved in the above-mentioned virtual experiment for measuring resistance strain may be different, so that the Applications (APP) corresponding to the experiments formed finally are independent. But the virtual implementation of each experiment includes a complete experimental link. The virtual implementation of the dynamic strain measurement experiment is taken as an example, and the virtual implementation mainly comprises introduction of an experiment purpose, introduction of experimental equipment (a sensor, a strain gauge and the like), experimental notice, a use method of the experimental equipment (the dynamic strain gauge, a data acquisition computer and the like), demonstration of experiment operation steps, acquisition and analysis of experimental data, experimental thinking and summary and the like.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for realizing virtual demonstration of a resistance strain measurement experiment is characterized by comprising the following steps:
creating a virtual experiment scene and demonstrating a virtual experiment, wherein the virtual experiment scene creating comprises the following steps:
establishing each virtual experimental equipment model, and importing each virtual experimental equipment model into a virtual scene project of a 3D development platform;
obtaining initial coordinate parameters corresponding to each virtual experimental equipment model in the virtual experimental scene through a mapping relation between the virtual experimental scene and the real experimental scene, so that the arrangement of the virtual experimental equipment models is in proportion with that in the real experimental scene;
the virtual experiment demonstration comprises:
adding key frames on a time axis of an animation editor of the 3D development platform, and inputting movement coordinate parameters of the virtual experimental equipment model in the virtual experimental scene in the experimental operation step corresponding to each key frame, so that each virtual experimental equipment model moves according to the movement coordinate parameters along with the movement of the time axis.
2. The method for realizing the virtual demonstration of the resistance strain measurement experiment according to claim 1,
the virtual character is driven to move and operate through the position coordinate change of the virtual character and the position coordinate change of the limbs of the virtual character, and each virtual experiment equipment model is also provided with a reduced copy which is bound on the palm of the virtual character,
and adding a zoom key frame in the animation editor, and performing a zoom operation on the zoom key frame so that when the virtual character picks up a certain virtual experimental equipment model, a zoomed-out copy of the certain virtual experimental equipment model is zoomed in, and the certain virtual experimental equipment model is zoomed out.
3. The method for realizing the virtual demonstration of the resistance strain measurement experiment according to claim 2,
the time interval between the reduction of the certain virtual experimental equipment model and the enlargement of the reduced copy of the virtual experimental equipment model is less than or equal to 1/60 s.
4. The method for realizing the virtual demonstration of the resistance strain measurement experiment according to claim 2,
and adding an animation event into the animation editor, and binding a script function for calling the audio file for the animation event, so that the script function calls and executes the audio file after a trigger condition is reached, wherein the audio file comprises explanation audio for the experimental operation steps.
5. The method for realizing the virtual demonstration of the resistance strain measurement experiment according to claim 4,
adding an animation event in an animation editor, and binding a script function for calling an audio file for the animation event, so that after a trigger condition is reached, the script function calls and executes the audio file, wherein the steps of:
adding a sound source and an audio listener on a scene component of a virtual scene item of a 3D development platform;
importing the audio file into a virtual scene project of a 3D development platform, and binding a script function to the virtual scene project;
respectively adding animation events to a plurality of time nodes in an animation editor according to the virtual experiment operation steps;
and setting a trigger condition for triggering the script function in each animation event, so that the audio file is called under the condition that the trigger condition is reached, and the explanation of the experimental process is realized.
6. The method for realizing the virtual demonstration of the resistance strain measurement experiment according to claim 1,
the virtual experiment scene is established and is still included virtual experiment equipment model and play up, and virtual experiment equipment model is played up and is included:
introducing an assembly body and parts of the virtual experimental device model into 3 DSMAX;
converting each part of a virtual experimental equipment model into an editable network, and using a UV editor to generate a plane UV image of each part of the virtual experimental equipment model;
the plane UV image is led into Photoshop, and positioning assembly processing is carried out on the plane UV image and the rendering outline map;
and creating a material in the 3DSMAX, endowing the planar UV image subjected to positioning and assembling treatment with the material, and applying the material to an assembly body of the virtual experimental device model.
7. The method for realizing the virtual demonstration of the resistance strain measurement experiment according to claim 1,
the mapping relationship between the virtual experiment scene and the real experiment scene is described as follows: x ' ═ MX, where X ' ═ X ', y ', z ')TCorresponding coordinates of the virtual experiment equipment model in a global coordinate system of the virtual experiment scene, wherein X is (X, y, z)TThe coordinate of the virtual experimental device model in the global coordinate system of the real experimental scene is shown, and M is a transformation matrix.
8. The utility model provides a virtual demonstration implementation system of resistance strain measurement experiment which characterized in that includes:
the virtual experiment scene building module is used for building a virtual experiment scene and obtaining corresponding initial coordinate parameters of each virtual experiment equipment model in the virtual experiment scene through the mapping relation between the virtual experiment scene and the real experiment scene, so that the arrangement of the virtual experiment equipment models is in proportion with that in the real experiment scene;
and the key frame construction module is used for adding key frames on a time axis of an animation editor of the 3D development platform, and correspondingly inputting the moving coordinate parameters of the virtual experimental equipment models in the virtual experimental scene in the experimental operation step corresponding to the key frames, so that the virtual experimental equipment models move according to the moving coordinate parameters along with the movement of the time axis.
9. The virtual demonstration implementation system for the resistance strain measurement experiment of claim 8,
the virtual character building module is used for driving the virtual character to move through the position coordinate of the virtual character and the position coordinate change of the limbs of the virtual character, each virtual experiment equipment model is further provided with a reduced copy, each reduced copy is bound on the palm of the virtual character,
and the key frame construction module is further used for adding a scaling key frame on the time axis of the animation editor, and performing scaling operation on the scaling key frame, so that when the virtual character picks up a certain virtual experimental equipment model, a scaled-down copy of the certain virtual experimental equipment model is enlarged, and the certain virtual experimental equipment model is scaled down.
10. The virtual demonstration implementation system for the resistance strain measurement experiment of claim 8,
the virtual experimental equipment model comprises a strain gauge, a static/dynamic strain gauge, an experimental bench, a data acquisition computer and a drilling method residual stress test platform.
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