CN113744590A - VR interactive teaching device based on virtual dismouting of pure electric vehicles high pressure part detects - Google Patents
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Abstract
The invention relates to a VR interactive teaching device based on virtual disassembly and assembly detection of a high-voltage part of a pure electric vehicle, which comprises: the learning and operating module is used for importing component information and determining an optimal disassembly and assembly sequence; the instruction module is used for building a virtual dismounting teaching platform; and the evaluation module is used for constructing an evaluation system, monitoring the operation state of the student and performing comprehensive evaluation on the student. According to the invention, a new energy automobile is constructed, the 3D interactive teaching system relates to high-voltage part detection and related part recognition training items, a teacher issues VR teaching resources through a PC (personal computer) end, task contents are updated on a VR software platform at proper time, teaching is guided, and a student can perform interactive learning training through VR equipment, so that the learning interest, repeated practice and acquaintance standard operation process of the student can be improved, and a guarantee is provided for safe training operation. The problem of large potential safety hazard of traditional new energy technology courses classroom practical teaching is solved.
Description
Technical Field
The invention relates to the technical field of virtual teaching, in particular to a VR interactive teaching device based on virtual disassembly and assembly detection of a high-voltage part of a pure electric vehicle.
Background
Under the condition of no perceptual knowledge, the trainees are allowed to directly contact the vehicle and operate the vehicle, so that operation errors are caused to a great extent, and equipment damage or safety accidents are caused. Especially, high-voltage devices are arranged at multiple positions of a power module of the new energy pure electric vehicle, the voltage is as high as 330 volts, if a student operates by mistake or does not operate normally, the current flowing through a human body is very large, and the student is very easy to get an electric shock injury accident. The method not only increases the psychological burden of teachers, but also has certain influence on the teaching progress.
Disclosure of Invention
The invention aims to construct a 3D interactive teaching system for a new energy automobile, which relates to high-voltage part detection and related part recognition training items, a teacher issues VR teaching resources through a PC (personal computer) end, task contents are updated timely on a VR software platform to guide teaching, and a student can perform interactive learning and training through VR equipment, so that the learning interest, repeated practice and acquaintance of the student are improved, and a guarantee is provided for safe training operation. The problem of large potential safety hazard of traditional new energy technology courses classroom practical teaching is solved.
The invention provides a VR interactive teaching device based on virtual disassembly and assembly detection of a high-voltage part of a pure electric vehicle, which comprises:
the learning and operating module is used for importing component information and determining an optimal disassembly and assembly sequence;
the instruction module is used for building a virtual dismounting teaching platform; and
and the evaluation module is used for constructing an evaluation system, monitoring the operation state of the student and performing comprehensive evaluation on the student.
The preferred scheme is as follows: the mode of importing the component information by the learning and operating module comprises the following steps:
collecting relevant information of a disassembly and assembly object, wherein the relevant information of the disassembly and assembly object comprises part shapes, part sizes and space constraints among parts, which are generated by avoiding collision among the parts in the disassembly and assembly process; importing the collected related information of the disassembly and assembly objects into software SolidWorks and 3dmax, and modeling in the SolidWorks in a bottom-up design mode; and simulating the separation process of the parts for the disassembly and assembly object, removing the constraint relation between the parts, cleaning the constraint relation between the parts, determining the feasibility of the disassembly and assembly of the parts, and determining the initial movement direction of the disassembly and assembly of the parts.
The preferred scheme is as follows: the mode that instructs the module to build virtual dismouting teaching platform includes:
the part constraint relation of the disassembly and assembly object is sorted, a logic model of each part in the disassembly and assembly object is designed based on a Petri network, a pre-transition set of each disassembly and assembly object part is determined according to a pre-condition of transition of the Petri network, and the part assembly priority of the disassembly and assembly object is further sorted; and drawing the APN, an Assembly Petri Net transition detail table and an APN structure chart according to the component constraint relation, the Assembly priority and the Assembly process difficulty, and obtaining an optimal disassembly and Assembly sequence.
The preferred scheme is as follows: the guidance module is further to: and (3) building a virtual dismounting platform in unity3d, importing various dismounting sequences, and introducing the dismounting object constraint relation and the component constraint into a dismounting process.
The preferred scheme is as follows: the evaluation module builds an evaluation system, monitors the operation state of the student and comprehensively evaluates the student, and the evaluation module comprises the following modes:
examining the dismounting efficiency, dismounting attitude, dismounting accuracy and knowledge point mastering conditions of a student;
setting evaluation indexes, namely time used in the dismounting process, times of wrong operation, times of wrong assembly sequence and on-line answer and assessment scores;
distributing weight ratios, and distributing different weights to different primary indexes and secondary indexes according to the importance degree;
and selecting a fuzzy comprehensive operator to perform single-factor fuzzy evaluation and comprehensive fuzzy evaluation on each level of indexes, and obtaining a final evaluation result according to a maximum membership rule.
The preferred scheme is as follows: the guidance module guides the assembly flow chart into a unity working environment to be displayed based on the petri network model, records the position of the current working procedure, prompts the information of the current selectable component and highlights the selectable component model; the component information refers to the names of currently detachable parts, the current operation score states, a disassembly and assembly sequence guide diagram and a disassembly and assembly object component introduction area.
The preferred scheme is as follows: the evaluation module is also used for selecting proper evaluation indexes and evaluation basis, scoring the work efficiency by recording the disassembly and assembly consumption time, scoring the work attitude by recording the times of error operation, scoring by recording the comparison of the current disassembly and assembly sequence and the optimal disassembly and assembly sequence, and scoring the knowledge point mastering condition by on-line answering; carrying out weight distribution on the evaluation indexes, and distributing weight ratios with total values of 1 according to different importance degrees; and carrying out fuzzy synthesis transformation on the weight vector and the evaluation matrix of the single factor to obtain a single factor evaluation result, and comprehensively evaluating all the indexes according to the weight ratio to obtain a final evaluation result.
The preferred scheme is as follows: the learning and operating module realizes the basic functions of picking, moving and rotating parts based on the interaction function of the handle and realizes the judgment of the disassembly and assembly feasibility of the parts by depending on the logic judgment of the script.
The preferred scheme is as follows: the guidance module displays basic information and state information of the assembly and disassembly object components on the helmet display based on information prompt of the helmet display, wherein the basic information comprises names of the picked assembly and disassembly object components and constraint information of the assembly and disassembly object components, and guides an assembly process; the state information includes: the state of the component to be attached and detached.
The invention aims to solve the problems and provides a VR interactive teaching device based on virtual disassembly and assembly detection of a high-voltage part of a pure electric vehicle, combines traditional electric vehicle high-voltage part process teaching with a virtual reality technology, and has the advantages of high safety performance, less site limitation, low economic cost, high teaching quality and the like. The virtual teaching platform enables a user to observe and participate in an assembly process in a virtual environment with high reality degree, and simultaneously mobilizes the visual sense, the tactile sense, the auditory sense and the motion sense of the user in a learning process, so that the user is converted from a simple visual interaction mode into a multi-sense-organ interaction teaching mode with more immersion and reality. Meanwhile, the teaching device constructs a perfect guidance system, and is convenient for users to plan and try the assembly sequence in the disassembly and assembly process. And constructing a corresponding evaluation system, and inspecting the working efficiency, the working attitude, the disassembly and assembly sequence, the knowledge point mastering degree and the like of the students in real time. Therefore, the learning efficiency is improved, the learning thinking is expanded, and the traditional teaching mode is changed.
Drawings
Fig. 1 is a structural diagram of a VR interactive teaching device based on virtual disassembly and assembly detection of a high-voltage part of a pure electric vehicle.
Detailed Description
The virtual dismounting technology has three characteristics, namely Immersion (Immersion), interactivity (Interactive) and autonomy (Imagination), namely the characteristic of 3I, and requires a dismounting environment with high reality, so that a relatively natural interaction mode meets the interaction requirement of real-time performance, and a virtual dismounting environment close to reality is constructed, thereby facilitating trainees to simulate and train dismounting skills and the like. Effectively makes up the defect of the traditional dismounting teaching mode.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
As shown in FIG. 1, the embodiment provides a VR interactive teaching device based on virtual dismouting detection of pure electric vehicles high pressure portion.
As shown in fig. 1, in an embodiment of the present invention, a VR interactive teaching device based on virtual dismounting and mounting detection of a high-voltage portion of a pure electric vehicle is provided, where the VR interactive teaching device includes: learning and operation module 100, guidance module 200, and evaluation module 300.
The learning and operating module 100 is configured to import component information, including collecting relevant physical information of a disassembly and assembly object, import the collected relevant physical information into a preset model, construct a physical model of the disassembly and assembly object, optimize the physical model, and further determine a relationship between components in the disassembly and assembly object.
The learning and operating module 100 is further configured to determine an optimal sequence of disassembly and assembly, specifically: and designing a logic model of the disassembly and assembly object based on a Petri network according to the physical model and the internal relation of the disassembly and assembly object and considering the difficulty degree of the related disassembly and assembly process, and further determining the assembly priority among the components.
The guidance module 200 is used for building a virtual dismounting teaching platform, and specifically comprises the following steps: and introducing the component relation and the optimal disassembly and assembly sequence into a unity3d scene, designing a plurality of guidance modes, designing a force feedback system, and building an interactive virtual disassembly and assembly teaching platform for disassembling and assembling objects.
The evaluation module 300 is used for constructing an evaluation system and determining related indexes related to virtual disassembly and assembly teaching, weight ratios of indexes at different levels and fuzzy comprehensive operator types adopted by a fuzzy comprehensive evaluation method.
The evaluation module 300 is further configured to monitor the operation state of the student in real time, record relevant indexes such as the disassembly and assembly speed, the number of misoperation times, the disassembly and assembly sequence accuracy of the student, compile a logic script, perform single-factor evaluation on the key indexes based on a fuzzy comprehensive evaluation method, and finally perform comprehensive fuzzy calculation according to the weight of each index to obtain a comprehensive evaluation result.
The learning and operating module 100 is configured to import component information, and specifically includes:
collecting relevant information of the disassembly and assembly objects, wherein the relevant information of the disassembly and assembly objects comprises part shapes, part sizes and space relations among parts, which are generated by collision among the parts, in the disassembly and assembly process;
and modeling according to the collected relevant information of the disassembly and assembly object. For example, the related information is imported into solid works (solid works is used for three-dimensional modeling of an assembly body) and 3dmax (3D Max is used for material setting, picture rendering, model coordinate adjustment and naming of each node of a model), modeling is performed in the solid works in a bottom-up design mode, a component separation process is simulated for the disassembly and assembly objects, constraint relations among components are removed, the feasibility of component assembly is determined, and meanwhile, the initial motion direction of component assembly is determined.
The learning and operating module 100 is further configured to determine an optimal sequence of disassembly and assembly, specifically including:
and sorting the part relations of the disassembly and assembly objects, designing a logic model of each part in the disassembly and assembly objects based on a Petri network, determining a preposed transition set of each disassembly and assembly object part according to a preposed condition of transition of the Petri network, and further cleaning the part disassembly and assembly priority of the disassembly and assembly objects. Drawing a corresponding APN (Assembly Petri Net) transition detail table and an APN structure chart according to indexes such as the relation of the parts of the disassembly and assembly object, the disassembly and assembly priority, the difficulty of the disassembly and assembly process and the like, and obtaining a corresponding optimal disassembly and assembly sequence.
And describing the disassembly and assembly priority among the parts as a parent-child relationship, and establishing a new APN. Is defined as APN ═ (G, S, Q, W, D)0FR, CT). Wherein G is a set of libraries representing a whole machineThe body is in a certain disassembly and assembly state; s is a set of all transitions and represents the dismounting process of a certain part;
Qia transition flow representing the library site and the transition, connecting the equipment state and the component dismounting operation; w is the weight on the arc, when the sum of the weights is 1, the condition of the library transition is met, and the next step of disassembly and assembly operation is carried out; d0The state is the state at the initial transition time, and is subsequently used for judging the component disassembly feasibility. D (D is the state set of the transition moment, D)0E.g. D) can change along with the process of assembling and disassembling the parts, and the state of the change is used; FRs are used to describe parent-child relationships between parts, called parent transitions, FRiE.FR represents all the parent transitions at the upper level of the current disassembly and assembly step, and the current disassembly and assembly step can be carried out only after all the parent transition sets occur, so that the relationship between the components and the disassembly and assembly priority can be well expressed; the CT is used to record the time spent disassembling each part, which is the set of all disassembling times, CTiE-TM record transition tiThe typical disassembly and assembly operation takes time; therefore, G1 to G20 represent the disassembled state of the high-voltage part, such as G1 represents the initial state, and s1 to s20 represent the disassembling steps, such as s20 represents the packaging of the upper case.
a virtual dismounting platform is built in unity3d, a dismounting sequence is led in, dismounting object relationships and component constraints are led in a dismounting process, and multiple interactive modes of demonstration, mouse interaction and HTC Vive (the whole set of equipment comprises a head-mounted display, two single-hand-held controllers and a positioning system (Lighthouse) capable of tracking the display and the controllers in space) interaction are achieved. The virtual dismounting platform has a basic dismounting function, dismounting sequence guidance and force feedback.
The force sense feedback function of the VR interactive teaching device can adopt common mechanics feedback mathematical logic, and specific contents are not repeated.
The evaluation module 300 is used for constructing an evaluation system, and specifically includes:
confirming the evaluation purpose, namely inspecting the disassembly and assembly efficiency, the disassembly and assembly attitude and the disassembly and assembly accuracy of the trainees; setting evaluation indexes, namely time used in the dismounting process, times of wrong operation, times of wrong dismounting sequence and on-line answer assessment scores; distributing weight ratios, and distributing different weights to different primary indexes and secondary indexes according to the importance degree; selecting fuzzy synthesis operator
(the operator belongs to a weighted average operator, can obviously reflect the weight function, has higher comprehensive degree) to carry out single-factor fuzzy evaluation and comprehensive fuzzy evaluation on each level of indexes, and a final evaluation result is obtained according to the maximum membership principle.
Fuzzy comprehensive model: z ═ BoC (where "o" is the fuzzy operator.)
b-weight vector of evaluation factors;
c-evaluation matrix of single factor;
m is the number of second-level indexes under the first-level index;
n is evaluation grade number, wherein n is 5;
i-sequentially taking natural numbers from 1 to m;
j-natural numbers taken from 1 to n in sequence.
In the virtual assembly process, except for an assessment system taking an online examination as a main mode, indexes to be investigated by an evaluation module in the assembly process mainly comprise three major parts: assembly speed, assembly action accuracy and assembly sequence accuracy;
in some embodiments, the VR interactive teaching device evaluates mathematical logic of a disassembly and assembly speed indicator. The disassembly and assembly speed generally reflects the disassembly and assembly efficiency of the student, and corresponding stage scores are obtained mainly by obtaining the current operation duration of the student and comparing the current operation duration with the reference duration given by the evaluation group. The score is always displayed in an operation interface of the student, changes in real time and feeds back in real time, and the score is used for final statistics on one hand and is used for feeding back the current disassembly and assembly conditions of the student on the other hand. When the trainee operates too long, the system will display a score such as "fail" and warn.
In some embodiments, the VR interactive teaching device evaluates mathematical logic of an accuracy index of a disassembling and assembling action, and a precision of a normal action reflects a student attitude for virtual disassembling and assembling, and the statistical result of the error operation frequency is compared with a comparison frequency given by an evaluation group to give a score of a corresponding stage, which is the same as a feedback mode of a disassembling and assembling speed, and the evaluation result of the accuracy of the disassembling and assembling action also provides real-time score display and warning.
In some embodiments, the VR interactive teaching device evaluates the mathematical logic of the accuracy index of the disassembly and assembly sequence, and the evaluation of the disassembly and assembly sequence is more complex and diversified than the evaluation scheme of the two sets of indexes. On one hand, the key steps which are most main and most prone to error are screened according to the optimal result obtained by the Petri network logic modeling, on the other hand, the current operation state is obtained through the change of the collision detection position and the detachable state of the component in real time, and the working procedure of the current operation is judged. The two are compared with each other to identify the accuracy of the current operation sequence, and the result is displayed in real time and warning feedback is provided.
The key technologies required by the learning and operating module are a collision detection technology and a handle interaction technology. Different from the real world, due to the characteristics of the virtual assembly environment, the phenomena of die penetration and the like are easy to occur in the assembly process, the purpose of collision detection is to detect whether a plurality of objects in the virtual space collide or contact with each other, so that the interaction between a virtual handle and parts of a high-voltage part of an electric automobile in the virtual world is possible, the realization of the specific handle function needs to compile related function scripts, and corresponding control scripts are added to all buttons on the handle, so that the operation functions of assembly, force feedback and the like are realized.
The key technology required by the learning and operating module is Petri net logic modeling and UI interaction technology. In the virtual assembly system, the student can operate all the components without limitation, and although the degree of freedom of the system is improved to a certain extent, the disassembly and assembly mode is difficult to avoid various illegal disassembly and assembly operations, so that the disassembly and assembly efficiency and the overall assembly experience are reduced. The Petri net modeling can obtain an optimal assembly sequence, the disassembly and assembly operation of a student can be limited and guided by matching with a handle interaction technology, and the UI interaction technology can guide the student to smoothly complete the operation steps through displaying a prompt bar of the detachable state of a component, a highlight prompt of the component and other forms.
The key technology required by the evaluation module is a fuzzy comprehensive average method. VR interactive teaching device need provide the real-time evaluation feedback of current student's learning state, can be used to the comprehensive evaluation of mr teaching on the one hand, and on the other hand can feed back the student. Because the fuzzy comprehensive evaluation method can process fuzzy evaluation objects through an accurate digital means, can carry out relatively scientific and reasonable quantitative evaluation on fuzzy indexes of information, and is suitable for solving the problems of fuzziness and nondeterminacy, the fuzzy comprehensive average method is selected as the basic method of the VR interactive teaching device evaluation module.
When the invention works, the student wears the helmet display, and sees the model and the information of the disassembly and assembly object (including the name of the picked disassembly and assembly object part, the disassembly and assembly state of the disassembly and assembly object part, the constraint information of the disassembly and assembly object part, the assembling resistance generated by the current assembling guides the assembling process, the relative position of each part of the disassembling and assembling object is changed by a student through an operating handle, the disassembling and assembling of the disassembling and assembling object are completed, in the disassembling and assembling process, the helmet display can display the prompt of the disassembly and assembly process, the handle can simulate the stress magnitude (the vibration frequency is high if the magnitude of interference is large) during the real disassembly and assembly according to different conditions, in the disassembly and assembly process, the system monitors the change of each index of the disassembly and assembly in real time according to the current disassembly and assembly state, and outputting and displaying all disassembly and assembly indexes of an operator according to a preset script, and after the disassembly and assembly are finished, carrying out fuzzy comprehensive calculation on all the disassembly and assembly indexes by the system to obtain a final evaluation result.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application of the invention, and further modifications may readily be effected by those skilled in the art, so that the invention is not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.
Claims (9)
1. VR interactive teaching device based on virtual dismouting detection of pure electric vehicles high pressure part, its characterized in that includes:
the learning and operating module is used for importing component information and determining an optimal disassembly and assembly sequence;
the instruction module is used for building a virtual dismounting teaching platform; and
and the evaluation module is used for constructing an evaluation system, monitoring the operation state of the student and performing comprehensive evaluation on the student.
2. The VR interactive teaching device based on virtual disassembly and assembly detection of a high-voltage part of a pure electric vehicle as claimed in claim 1, wherein the manner of importing component information by the learning and operating module comprises:
collecting relevant information of a disassembly and assembly object, wherein the relevant information of the disassembly and assembly object comprises part shapes, part sizes and space constraints among parts, which are generated by avoiding collision among the parts in the disassembly and assembly process; importing the collected related information of the disassembly and assembly objects into software SolidWorks and 3dmax, and modeling in the SolidWorks in a bottom-up design mode; and simulating the separation process of the parts for the disassembly and assembly object, removing the constraint relation between the parts, cleaning the constraint relation between the parts, determining the feasibility of the disassembly and assembly of the parts, and determining the initial movement direction of the disassembly and assembly of the parts.
3. The VR interactive teaching device based on virtual disassembly and assembly detection of a high-voltage part of a pure electric vehicle as claimed in claim 1, wherein the manner of constructing the virtual disassembly and assembly teaching platform by the guidance module comprises:
the part constraint relation of the disassembly and assembly object is sorted, a logic model of each part in the disassembly and assembly object is designed based on a Petri network, a pre-transition set of each disassembly and assembly object part is determined according to a pre-condition of transition of the Petri network, and the part assembly priority of the disassembly and assembly object is further sorted; and drawing the APN, an Assembly Petri Net transition detail table and an APN structure chart according to the component constraint relation, the Assembly priority and the Assembly process difficulty, and obtaining an optimal disassembly and Assembly sequence.
4. The VR interactive teaching device based on virtual disassembly and assembly detection of a high-voltage part of a pure electric vehicle of claim 3, wherein the guidance module is further configured to: and (3) building a virtual dismounting platform in unity3d, importing various dismounting sequences, and introducing the dismounting object constraint relation and the component constraint into a dismounting process.
5. The VR interactive teaching device based on virtual disassembly and assembly detection of the high-voltage part of the pure electric vehicle as claimed in claim 1, wherein the evaluation module is used for constructing an evaluation system, monitoring the operation state of a student and performing comprehensive evaluation on the student, and comprises:
examining the dismounting efficiency, dismounting attitude, dismounting accuracy and knowledge point mastering conditions of a student;
setting evaluation indexes, namely time used in the dismounting process, times of wrong operation, times of wrong assembly sequence and on-line answer and assessment scores;
distributing weight ratios, and distributing different weights to different primary indexes and secondary indexes according to the importance degree;
and selecting a fuzzy comprehensive operator to perform single-factor fuzzy evaluation and comprehensive fuzzy evaluation on each level of indexes, and obtaining a final evaluation result according to a maximum membership rule.
6. The VR interactive teaching device based on virtual disassembly and assembly detection of the high-voltage part of the pure electric vehicle as claimed in claim 1, wherein the guidance module guides an assembly flow chart into a unity work environment to be displayed based on a petri net model, records the position of a current process, prompts information of currently selectable components, and highlights the model of the selectable components; the component information refers to the names of currently detachable parts, the current operation score states, a disassembly and assembly sequence guide diagram and a disassembly and assembly object component introduction area.
7. The VR interactive teaching device based on virtual disassembly and assembly detection of a high-voltage part of a pure electric vehicle as claimed in claim 1, wherein the evaluation module is further configured to select an appropriate evaluation index and an evaluation basis, score the work efficiency by recording disassembly and assembly time consumption, score the work attitude by recording the number of times of error operations, score by recording the comparison of the current disassembly and assembly sequence and the optimal disassembly and assembly sequence, and score the knowledge point grasping condition by on-line answering; carrying out weight distribution on the evaluation indexes, and distributing weight ratios with total values of 1 according to different importance degrees; and carrying out fuzzy synthesis transformation on the weight vector and the evaluation matrix of the single factor to obtain a single factor evaluation result, and comprehensively evaluating all the indexes according to the weight ratio to obtain a final evaluation result.
8. The VR interactive teaching device based on virtual disassembly and assembly detection of the high-voltage part of the pure electric vehicle as claimed in any one of claims 1 to 7, wherein the learning and operating module realizes basic functions of picking, moving and rotating parts based on the interaction function of the handle, and judges the disassembly and assembly feasibility of the parts depending on the logic judgment of the script.
9. The VR interactive teaching device based on virtual disassembly and assembly detection of a high-voltage part of a pure electric vehicle as claimed in any one of claims 1 to 7, wherein the guidance module displays basic information and state information of the disassembly and assembly object parts on a helmet display based on information prompts of the helmet display, wherein the basic information includes names of the picked disassembly and assembly object parts and constraint information of the disassembly and assembly object parts to guide an assembly process; the state information includes: the state of the component to be attached and detached.
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