CN116206501A - VR-based radiation protection skill training and checking system - Google Patents

Abstract

The invention belongs to the technical field of nuclear power plant training, and particularly relates to a VR-based radiation protection skill training and checking system, which comprises the following steps: the teaching management subsystem sends training examination instructions to the server database, and the server database loads corresponding scenes or theoretical examination question sets to the VR cabin subsystem and the universal mobile platform subsystem according to the instruction content. According to the invention, a training platform is built for radioactive staff through a VR technology, so that experience type training and checking scenes such as high-dose rate equipment operation and abnormal radiation level are provided, and the defects of the traditional training and checking mode are overcome.

Description

VR-based radiation protection skill training and checking system

Technical Field

The invention belongs to the technical field of nuclear power plant training, and particularly relates to a VR-based radiation protection skill training and checking system.

Background

Currently, the main training modes of the radioactive staff of the nuclear power plant are classroom theory training and simple skill training. The skill training is mainly used for carrying out additional protective articles on and off, simulating the process of entering and exiting from a sanitary entrance, and the like, but for high-radiation-dosage-rate horizontal equipment such as primary side collecting pipe unsealing of a steam generator, disassembly of an upper component, pulling of a finger sleeve, and the like, corresponding radiation protection skill practical training cannot be carried out, and the skill training is mainly due to the fact that the equipment is large in size, precise in structure, high in simulation difficulty and large in cost investment. Meanwhile, practical training cannot be performed on site, and because of the high dosage rate of the equipment, personnel are easily subjected to unintended irradiation.

In addition, the traditional radiation protection skill assessment mode is single, training assessment scenes of equipment abnormality, radiation level abnormality and the like cannot be set, assessment staff cannot visually see responses and handling skill mastering conditions of students, and whether the processing behaviors of the students are accurate and in place under abnormal conditions cannot be reflected truly.

Accordingly, it would be desirable to provide a system and method for training and assessing radioprotective skills that addresses the above-described problems.

Disclosure of Invention

The invention aims to provide a radiation protection skill training and checking system based on VR, which builds a training platform for radioactive staff through VR technology, provides experience training and checking scenes such as high-dose rate equipment operation, abnormal radiation level and the like, and solves the defects of the traditional training and checking mode.

The technical scheme for realizing the purpose of the invention comprises the following steps:

a VR-based radioprotective skill training assessment system, the system comprising: the teaching management subsystem sends training examination instructions to the server database, and the server database loads corresponding scenes or theoretical examination question sets to the VR cabin subsystem and the universal mobile platform subsystem according to the instruction content.

VR cabin subsystem includes VR cabin, VR helmet, somatosensory enhancement device and accessory, display screen, interactive motion platform for VR experience training and theoretical knowledge examination.

When the VR cabin subsystem implements VR experience training, a control end of the VR cabin subsystem receives an experience scene instruction sent by the teaching management subsystem, and views a corresponding virtual three-dimensional scene through the VR helmet; experience training is carried out through the interactive motion platform, the VR cabin, the somatosensory enhancement device and accessories;

when the VR cabin subsystem carries out theoretical knowledge assessment, the control end of the VR cabin subsystem receives theoretical knowledge assessment instructions sent by the teaching management system, answers questions through a rocker device beside the seat, and assessment results are automatically stored in a server database.

The universal action platform subsystem comprises a control center, a display screen, VR glasses, an interactive handle, interactive gloves and a universal action platform, and is used for VR practical operation training and practical operation assessment.

When the universal mobile platform subsystem carries out VR real operation training, the control end of the universal mobile platform subsystem receives real operation training instructions sent by the teaching management system, corresponding training scenes are displayed through VR glasses, and field simulation operation is carried out through interactive handles or interactive gloves.

When the universal mobile platform subsystem carries out VR real operation assessment, the control end of the universal mobile platform subsystem receives real operation assessment instructions sent by the teaching management system, corresponding assessment scenes are watched through VR glasses, field operation is carried out according to task requirements of the assessment scenes, and assessment results are stored in the server database.

The teaching management subsystem is used for remotely controlling the VR cabin subsystem and the universal action platform subsystem, sending training and examination scenes, sending theoretical examination papers and logging in user permission classification.

The teaching management subsystem classifies logged-in users into students, instructors and administrators.

The server is used for storing system data, carrying out data interaction and synchronization.

The system data stored by the server comprises: three-dimensional model geometric information, model introduction information, accident simulation animation, operation flow animation, theoretical knowledge question bank, training personnel information, examination results and logs.

The beneficial technical effects of the invention are as follows:

1) The method effectively solves the technical problems of high risk and high cost of radiation protection skill training.

2) The method is based on VR technology, can develop corresponding training and checking scenes according to the radiation work focused by the nuclear power station, and has wide applicability. And meanwhile, the workload and the cost for adjusting the corresponding scene are far lower than those of other skill training modes such as analog simulation and the like.

3) The method can effectively solve the problems of radiation protection skill training and assessment of large-scale primary circuit equipment overhaul work such as nuclear power station reactor body overhaul and the like.

4) The method effectively solves the problems of emergency treatment, response radiation protection skill training and assessment of staff under the condition of abnormal radiation.

5) The method solves the problem that the training of the staff related to the large-scale equipment of the primary loop of the nuclear power station can only go to the site for training, and effectively reduces the shot dose of the training staff and the related safety problem.

6) The method records and digitally displays places where the trainees have errors/are not standard in training and examination, and can help the trainees to clearly master relevant skill keys.

7) The method solves the problems that the traditional skill is scored by an assessment staff and an assessment mode of paper assessment record is formed, so that the assessment efficiency is improved, and the method is energy-saving and environment-friendly.

8) The method can expand and develop different training scenes and assessment requirements based on the training requirements of personnel in the nuclear power plant.

Drawings

FIG. 1 is a block diagram of a VR-based radiation protection skill training assessment system provided by the present invention;

FIG. 2 is a flowchart of a radiation protection skill VR experience provided by the present invention;

FIG. 3 is a flow chart of the radiation protection skill VR training provided by the present invention;

fig. 4 is a flowchart of the VR assessment of the radiation protection skill provided by the present invention.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples.

As shown in fig. 1, the VR-based radiation protection skill training and checking system provided by the invention is based on a VR cabin subsystem, a universal mobile platform subsystem, a teaching management subsystem and a server database to realize radiation protection skill training and checking. The teaching management subsystem transmits training examination instructions to the server database, the server database loads corresponding scenes or theoretical examination question sets to the VR cabin subsystem and the universal action platform subsystem according to instruction content, and the contents of examination results, logs and the like of students are automatically stored in the server and can be inquired and stored in the database through the teaching management subsystem. The functions realized by each subsystem/server are as follows: the VR cabin subsystem is used for VR experience training and theoretical knowledge assessment; the universal mobile platform subsystem is used for VR practical operation training and practical operation assessment; the teaching management subsystem is used for remotely controlling the VR cabin subsystem and the universal mobile platform subsystem, transmitting training and examination scenes, transmitting theoretical examination papers, grading login user authorities and the like; the server database is used for storing and updating and maintaining the system data.

1) VR cabin subsystem

VR cabin subsystem includes complete sets of equipment such as VR cabin, VR helmet, somatosensory enhancement device and accessory, and 1 display large screen demonstrates simultaneously and experiences interactive scene content. A set of interactive motion platform meeting the requirements of multiple people (at least 6 people in general) is provided in the VR cabin subsystem, so that VR experience training and theoretical knowledge assessment can be realized. When VR experience training is implemented, the subsystem control end receives experience scene instructions sent by the teaching management subsystem, and views corresponding virtual three-dimensional scenes through the VR helmet; in the training process, the on-site environment sound effect is felt through the interactive motion platform, the somatosensory enhancement device and the sound equipment which are arranged around the seat, and the sense of reality and the sense of experience of accident simulation are enhanced. When theoretical knowledge assessment is implemented, the subsystem control end receives theoretical knowledge assessment instructions sent by the teaching management system, answers are carried out through a rocker device beside the seat, and assessment results are automatically stored in a server database.

2) Universal mobile platform subsystem

The universal action platform subsystem comprises training equipment, wherein 1 set of training equipment comprises 1 control center, 1 display screen, 1 set of VR glasses, 1 double-interaction glove or interaction handle and 1 universal action platform, and the subsystem can realize VR practical operation training and practical operation examination. When VR real-operation training is implemented, the subsystem control end receives real-operation training instructions sent by the teaching management system, displays corresponding training scenes through VR glasses, and performs on-site simulation operation through handles or interactive gloves. When VR real operation assessment is implemented, a control end of the subsystem receives real operation assessment instructions sent by the teaching management system, corresponding assessment scenes are watched through VR glasses, field operation is carried out according to task requirements of the assessment scenes, and assessment results are stored in a server database.

3) Teaching management subsystem

The teaching management subsystem realizes instructor management and system management. The instructor management comprises content distribution operations such as planning experience scenes, operation scenes, theoretical exams and the like, and inquires assessment results. The system management comprises user information management, theoretical examination question bank management and scene management. The server website is accessed through the browser, authorized account number and password information are input to log in the teaching management subsystem, and remote on-off control, sending training and examination scenes, theoretical examination paper, sending and inquiring examination results of the VR cabin equipment and the universal mobile platform equipment are realized. Grouping and authority setting are carried out on users through the authority setting interface, and the user is endowed with a browsing range and a data operation range on the platform after the user logs in the platform and passes identity authentication. The login users are classified into 3 types of students, instructors and administrators according to different access rights.

4) Server device

The server is used for storing system data and performing data interaction and synchronization. The stored system data includes: three-dimensional model geometric information, model introduction information, accident simulation animation, operation flow animation, theoretical knowledge question bank, training personnel information, examination results, logs and the like. The three-dimensional model geometric information is model geometric data formed by CAD software, laser scanning modeling and other modes. The model introduction information comprises information such as names, function introduction, materials, sizes, models, pictures and the like of three-dimensional models in the scene. The accident simulation animation is a demonstration process for simulating safety accidents in a working scene. The operation flow animation is used for simulating a process of on-site operation of a work scene by using a tool. The theoretical knowledge question bank and the training personnel information are input or imported through the terminal. The examination results and logs are log records and operation records of the user and the examination results and are automatically generated for the system. And the administrator uploads the newly added scene content file to the server through ftp to realize the functions of expanding scenes, importing theoretical knowledge topics in batches and the like.

The VR-based radiation protection skill training and checking system is used for 3 modules of radiation protection skill VR experience, VR training and VR checking, wherein each module further comprises different scenes. The corresponding module flow is shown in fig. 2-4. Before training and checking, the following work needs to be carried out in advance:

1. and (5) three-dimensional modeling. The method adopts main stream modeling software such as CATIA, maya, 3DsMax and the like to carry out three-dimensional modeling work. The key equipment, tools and the like carry out assembly level modeling by adopting CATIA three-dimensional modeling software; the factory building, maintenance environment and partial equipment and tools lacking drawings are processed in a three-dimensional laser scanning mode, the processed model is modeled by 3DsMax or Maya, the proportion of the three-dimensional model is consistent with that of the entity, the precision is 20mm, the appearance is schematic, and the material mapping is consistent with the scene as much as possible. The proportion of the three-dimensional models of equipment, valves, pipelines and the like is consistent with that of the solid, the precision is 5mm, the appearance is accurate, the material mapping is consistent with the scene as much as possible, and the space position is consistent with that of the scene. The built three-dimensional model is stored in a server.

2. And (5) compiling theoretical test questions. The instructor needs to compile a theoretical test question library in advance according to the examination content and store the theoretical test question library in a service period.

3. And authority setting is carried out on corresponding personnel, so that subsequent training and examination work can be conveniently carried out.

After the early-stage preparation work is completed, radiation protection skill VR experience training, radiation protection skill VR checking and the like can be carried out according to training and checking requirements, and the specific implementation modes are as follows:

example 1 radioprotective skill VR experience:

step 1: and the instructor selects a corresponding experience scene according to the content required to be experienced by the learner and sends the scene to the VR cabin workstation.

Step 2: the workstation automatically plays the transmitted experience scene animation.

Step 3: the students wear VR helmets to watch scene contents, and the process is automatically played and operated; when the experience step needs to be operated, the system can automatically operate and; the system can be automatically triggered when the scene has somatosensory feedback, and the effect of enhancing experience is achieved through effective enhancement, somatosensory enhancement and the like.

Step 4: the system plays and experiences step by step according to the scene steps until the last step of the scene.

Step 5: and (3) completing playing and experience of all scene steps, and ending the experience of the radiation protection skill VR.

Example 2 radioprotective skills VR training:

step 1: and the instructor selects a corresponding training scene according to the training content required by the student and sends the training scene to the universal mobile platform subsystem.

Step 2: the learner logs in to the radiation protection skill VR training system.

Step 3: the trainee wears the VR helmet to watch the training scene content.

Step 4: the students operate or select related contents through the handles/gloves according to the information such as word prompts, dubbing prompts, operation guidance and the like, and develop the exercise of the training contents of the corresponding steps.

Step 5: the system automatically plays the operation screen.

Step 6: after the training of the operation steps is finished, the system judges whether all the steps of the scene are completed.

Step 6.1: if the scene operation steps are not completely trained, the system automatically enters the training of the next operation step, and the training mode is the same as that of the 3 rd step to the 5 th step.

Step 6.2: and if all the training of the scene operation steps is completed, finishing the training, and displaying an operation error list of the trainee by the system.

Example 3 radioprotective skill VR assessment:

step 1: and the instructor selects a corresponding assessment scene according to the content required to be assessed by the student and sends the assessment scene to the universal mobile platform subsystem.

Step 2: the learner logs in the radiation protection skill VR checking system.

Step 3: the students wear VR helmets to watch the content of the examination scene.

Step 4: the students operate or select related contents through the handles/gloves, and conduct practical operation and examination of the contents of the corresponding steps.

Step 5: the system automatically records the check operation of the students and automatically judges the correctness.

Step 6: the system automatically plays the checking operation picture.

Step 7: after the operation step is finished, the system judges whether all the steps of the scene are finished.

Step 7.1: if the scene operation steps are not completely checked, the system automatically enters the check of the next operation step, and the check mode is the same as the 3 rd step to the 6 th step.

Step 7.2: and if all the scene operation steps are checked, ending the check and displaying an operation error list.

Step 8: the system gathers and scores the assessment situation of the students, the assessment results of the students are saved to the server, and whether the assessment is displayed by lamps with different colors on a system interface or not is checked.

The nuclear power plant can develop different scenes according to the needs of the nuclear power plant, such as sleeve pulling operation, upper component decomposition operation, radiographic inspection operation and the like, and radiation protection skill content needing training and assessment can be set in the scenes. The specific embodiment of the radiation protection skill training and checking of the sleeve pulling operation is shown.

Step 1: moving to a blue target point, and selecting a corresponding tool instrument in the UI popped up by the tool box.

Step 2: moving to the blue target point, the relevant content can be heard before the work is finished.

Step 3: and moving to a blue aperture, switching the scene, and moving to a finger sleeve room.

Step 4: moving to the blue target point, the correct radiation measurement tool is selected in the pop-up UI to measure the radiation level.

Step 5: and selecting corresponding additional protection articles in the popped UI, and wearing the additional protection articles.

Step 6: and (5) moving to a blue target point, and performing interaction on the highlighted finger sleeve to perform operation.

Step 7: moving to the blue target point, the correct radiometric tool instrument is selected in the pop-up UI, looking at the dose rate.

Step 8: and (5) moving to a blue aperture, switching the scene, and exiting the finger sleeve room.

Step 9: and moving to a blue target point, selecting a reporting object in the popped UI, and carrying out telephone reporting.

Step 10: and (5) moving to a blue target point, and popping up a score settlement UI to finish a training and checking flow.

The present invention has been described in detail with reference to the drawings and the embodiments, but the present invention is not limited to the embodiments described above, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention. The invention may be practiced otherwise than as specifically described.

Claims (11)

1. A VR-based radioprotective skills training assessment system, the system comprising: the teaching management subsystem sends training examination instructions to the server database, and the server database loads corresponding scenes or theoretical examination question sets to the VR cabin subsystem and the universal mobile platform subsystem according to the instruction content.

2. The VR-based radioprotective skills training assessment system of claim 1, wherein the VR cabin subsystem comprises a VR cabin, a VR helmet, a somatosensory enhancing device and accessories, a display screen, an interactive motion platform for VR experience training and theoretical knowledge assessment.

3. The VR-based radiation protection skill training and assessment system according to claim 2, wherein when the VR cabin subsystem performs VR experience training, the VR cabin subsystem control end receives an experience scene instruction sent by the teaching management subsystem, and views a corresponding virtual three-dimensional scene through the VR helmet; experience training is performed through the interactive motion platform, the VR cabin, the somatosensory enhancement device and accessories.

4. The VR-based radiation protection skill training and assessment system according to claim 2, wherein when the VR cabin subsystem performs theoretical knowledge assessment, the VR cabin subsystem control end receives the theoretical knowledge assessment instruction sent by the teaching management system, and answers questions through a rocker device beside the seat, and the assessment results are automatically saved to the server database.

5. The VR-based radioprotective skill training assessment system of claim 1, wherein the universal mobile platform subsystem comprises a control center, a display screen, VR glasses, an interactive handle, interactive gloves, and a universal mobile platform for VR real-time training and real-time assessment.

6. The VR-based radiation protection skill training and assessment system according to claim 5, wherein when the universal mobile platform subsystem performs VR real operation training, the universal mobile platform subsystem control receives real operation training instructions sent by the teaching management system, displays corresponding training scenes through VR glasses, and performs field simulation operation through interactive handles or interactive gloves.

7. The VR-based radiation protection skill training and assessment system according to claim 5, wherein when the universal mobile platform subsystem performs VR real operation and assessment, the control end of the universal mobile platform subsystem receives the real operation and assessment instruction sent by the teaching management system, views the corresponding assessment scene through VR glasses, performs on-site operation according to the task requirement of the assessment scene, and stores the assessment result in the server database.

8. The VR-based radioprotection skills training and assessment system of claim 1, wherein said teaching management subsystem is configured to remotely control the VR cabin subsystem, the universal mobile platform subsystem, the send training and assessment scenarios, the theoretical exam group and the send, and the login user permission classification.

9. The VR based radioprotective skills training assessment system of claim 8, wherein said teaching management subsystem classifies logged-in users as students, instructors, administrators.

10. The VR based radioprotective skills training assessment system of claim 1, wherein said server is configured to store system data, interact with data, and synchronize.

11. The VR based radioprotective skills training assessment system of claim 10, wherein said server stored system data comprises: three-dimensional model geometric information, model introduction information, accident simulation animation, operation flow animation, theoretical knowledge question bank, training personnel information, examination results and logs.

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