A nuclear power plant personnel misrule prevention training system and method
By using virtual reality technology to create a three-dimensional model of the nuclear power plant and its radiation field distribution, combined with immersive training and real-time monitoring, the problem of personnel walking into the wrong interval during nuclear power plant training was solved, achieving safe and efficient training results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CNNC FUJIAN FUQING NUCLEAR POWER
- Filing Date
- 2023-12-28
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional nuclear power plant training methods cannot realistically simulate the complex environment of a nuclear power plant, which can lead to personnel easily going to the wrong compartments on site and pose safety risks.
By employing a 3D simulation scene module, a hands-on interactive module, and a scene monitoring module, combined with virtual reality technology, a 3D model of a nuclear power plant and its radiation field distribution are established. Immersive training is conducted using a VR all-in-one machine to simulate actual working scenarios and to perform real-time monitoring and assessment.
It improved personnel's understanding of nuclear power plant structure and radiation distribution, reduced the risk of going to the wrong bay, improved work efficiency and safety, and reduced training costs.
Smart Images
Figure CN117746706B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of nuclear power plant personnel training technology, and in particular to a training system and method for preventing personnel from going to the wrong interval in nuclear power plants. Background Technology
[0002] As an important energy production facility, nuclear power plants typically involve a large number of on-site operations, such as on-site inspections, equipment operation, maintenance, and repair. Due to their unique design, nuclear power plants are characterized by compact structures, dense equipment, narrow spaces, and high levels of environmental radiation. This can easily cause on-site personnel to wander into the wrong areas, which may not only lead to work delays but also endanger the safety of the unit and personnel.
[0003] Traditional nuclear power plant training methods typically include classroom education and written guidelines, which often fail to realistically simulate the complex environment of a nuclear power plant and make it difficult to ensure that personnel can cope with various situations in actual work.
[0004] It is evident that nuclear power plants have complex internal structures and high levels of radioactivity, making traditional training methods ineffective in preventing personnel from entering the wrong areas on-site. Summary of the Invention
[0005] The purpose of this invention is to provide a training system and method for preventing personnel from going to the wrong interval in nuclear power plants. This method significantly improves personnel's understanding of the structural layout, equipment arrangement, and dose distribution of nuclear power plants, and solves the problems of insufficient training methods for on-site personnel in nuclear power plants, which easily leads to safety risks caused by human error.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] A training system for preventing personnel from going to the wrong bay in a nuclear power plant includes:
[0008] The 3D simulation scene module is used to create a 3D model of the nuclear power plant's geometry, environmental layout, and radiation field distribution.
[0009] The hands-on interactive module is used to enable trainees to interact with the 3D simulation scene;
[0010] The scene monitoring module is used for process management of the hands-on interaction module;
[0011] The assessment and scoring module is used to record the operational status of each trainee in real time and conduct practical assessments based on the work orders assigned by the instructor.
[0012] As a feasible approach, in structural environment modeling, the 3D simulation scene module builds a 3D model of the overall structure and internal environment of the nuclear power plant. Based on the drawings, the nuclear power plant structures, passages, and stairs are modeled in the forward direction, and then the interior detail models of the rooms are reconstructed by referring to the on-site 3D laser scanning data.
[0013] As an feasible approach, the model established using the above methods is subjected to global lightweighting, which mainly includes the reduction of model triangles, optimization of material textures, and the arrangement of scene lighting after being published to the 3D engine.
[0014] As an feasible approach, radiation dose monitoring data from the nuclear power plant site can be synchronized to a three-dimensional model, the location and intensity of each radiation measuring point in the three-dimensional model can be configured, and the spatial distribution of the radiation dose field can be calculated based on the location and intensity of each radiation measuring point.
[0015] As a feasible approach, the process of realizing the three-dimensional radiation field distribution involves establishing the coordinates and dose values of each grid in three-dimensional space based on the radiation field data output by the calculation program. A line is emitted from the location of the observation camera towards the center of the grid bounding box, and the grid bounding box is sliced in a direction perpendicular to the ray. Based on the geometric position information and color configuration information of the slices, triangular mesh faces and texture data are generated. Then, the data is submitted to the GPU for rendering one by one from back to front. The color field is constructed by the slices formed by scattering within each grid, and finally, the radiation field effect in the three-dimensional model is realized.
[0016] As an feasible approach, the hands-on interactive module includes:
[0017] The scene interaction unit is used by trainees to enter the 3D simulation scene of the nuclear power plant and perform various interactive operations.
[0018] The task simulation unit is used by trainees to enter a 3D simulation scene of a nuclear power plant and perform various simulation tasks.
[0019] The multi-person interactive unit is used for multiple trainees to simultaneously enter a 3D simulation scene of a nuclear power plant for simulated collaboration or competition.
[0020] As a feasible approach, the task simulation unit, based on scene interaction and combined with the actual working process of a nuclear power plant, adds more interactive elements to the VR all-in-one machine to realize task simulation in a virtual environment.
[0021] As an feasible approach, the scene monitoring module includes:
[0022] The task allocation unit is used to provide instructors with the option to select and allocate practical training tasks.
[0023] The video monitoring unit is used to monitor the practical training process;
[0024] The process intervention unit is used to intervene in the practical training process in real time.
[0025] The data recording unit is used to record the trainees' practical training behaviors.
[0026] As an feasible approach, the scene monitoring module sends data to the VR all-in-one device via the network to enable task setting and process intervention in the practical interactive scene, and monitors the practical screen and records operation data by receiving scene data from the VR all-in-one device.
[0027] In addition, the present invention also provides a method for training personnel in nuclear power plants to prevent them from going to the wrong interval, comprising the following steps:
[0028] Step 1: Trainees wear VR all-in-one devices to run the practical simulation module, enter the 3D simulation scene of a nuclear power plant, and wait for the task to be assigned;
[0029] Step 2: The instructor runs the scenario monitoring module on the PC and assigns practical simulation tasks to the current trainees;
[0030] Step 3: After receiving the task, the trainee performs the corresponding operation in the VR all-in-one device according to the on-screen instructions;
[0031] Step 4: During the task execution, the instructor monitors the footage from each student's perspective.
[0032] Step 5: During the student's task execution, the instructor inserts intervention operations into the scenario to simulate various unexpected situations on site, and the student responds accordingly based on the prompts and changes in the scenario;
[0033] Step 6: After completing the task, the student receives their score and exits the task scenario;
[0034] Step 7: After the training is completed, the instructor can access the training records at any time to view the students' historical scores.
[0035] Compared with existing technologies, the nuclear power plant personnel error prevention training system and method provided by this invention have the following advantages:
[0036] This invention addresses the challenges posed by the complexity of the internal environment of nuclear power plants and the shortcomings of traditional training methods. By leveraging the rapid development of virtual reality, digital twins, and metaverse technologies, it proposes an innovative training device to prevent personnel from wandering into the wrong interval within nuclear power plants, thereby meeting the industry's need for efficient on-site personnel training.
[0037] This invention uses virtual simulation to realistically recreate the complex internal environment of a nuclear power plant, as well as immersive and interactive simulation training scenarios. It enhances nuclear power plant personnel's understanding of the on-site room layout and passageways through vivid and intuitive means, thereby achieving the goals of preventing wrong turns, reducing operational risks, improving work efficiency, and ensuring the safety of the nuclear power plant.
[0038] This invention utilizes 3D modeling and simulation technology, combined with the latest virtual reality (VR) all-in-one equipment, to create an immersive interactive training scenario that simulates real nuclear power plant on-site working conditions. With monitoring and evaluation of the training process, it effectively enhances personnel's familiarity with the internal structure of the nuclear power plant and their understanding of radiation levels in various areas. Using this device for routine nuclear power plant training or pre-work drills can significantly reduce training costs, improve personnel efficiency, and decrease the probability of human-caused risks, thereby ensuring the safe and efficient operation of the nuclear power plant. Attached Figure Description
[0039] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the technical description will be briefly introduced below.
[0040] Figure 1 A framework diagram of the nuclear power plant personnel training system for preventing personnel from going to the wrong interval, provided by the present invention.
[0041] Figure 2 The flowchart provided by this invention illustrates the training for nuclear power plant personnel to prevent them from going to the wrong interval. Detailed Implementation
[0042] The following detailed description provides further details on specific implementation methods.
[0043] like Figure 1 and Figure 2 As shown, the present invention provides a training system for preventing personnel from going to the wrong interval in a nuclear power plant, including a three-dimensional simulation scene module, a hands-on interactive module, a scene monitoring module, and an assessment and scoring module.
[0044] The 3D simulation scene module utilizes spatial modeling and radiation field calculation techniques to create a 3D model of the nuclear power plant's geometry, environmental layout, and radiation field distribution. The 3D simulation scene module comprises two parts: structural environment modeling and radiation field distribution.
[0045] Structural environment modeling utilizes modeling tools to build a 3D model of the overall structure and internal environment of the nuclear power plant. Based on the drawings, forward modeling of the nuclear power plant structures, passageways, and staircases is performed, followed by reverse reconstruction of the interior detail models by referencing on-site 3D laser scanning data. Preferably, considering that the final operating environment of the 3D model is a VR all-in-one device, global lightweighting processing of the model is also required, mainly including the reduction of model triangles, optimization of material textures, and the arrangement of scene lighting after publishing to the 3D engine.
[0046] The radiation field distribution synchronizes the radiation dose monitoring data of the nuclear power plant site to the three-dimensional model, configures the location and intensity of each radiation measuring point in the three-dimensional model, and then calculates the radiation dose field distribution in space based on the location and intensity of each radiation measuring point. The calculation method takes the room as the smallest unit of space, and the dose of each room is equal to the dose of the measuring point in the room, thus forming the three-dimensional radiation dose field distribution inside the nuclear power plant building.
[0047] The process of realizing the 3D radiation field distribution involves establishing the coordinates and dose values [x, y, z, dose] of each grid in 3D space based on the radiation field data output by the calculation program. A line is emitted from the location of the observation camera towards the center of the grid bounding box, and the grid bounding box is sliced in a direction perpendicular to the ray. Based on the geometric position information and color configuration information of the slices, triangular mesh faces and texture data are generated. Then, they are submitted to the GPU for rendering one by one from back to front. The color field is constructed by the slices formed by scattering within each grid, and finally, the radiation field effect in the 3D model is realized.
[0048] The 3D simulation scene module provided by this invention utilizes 3D modeling technology to create a highly detailed model of the internal environment of a nuclear power plant. The module establishes an accurate 3D map, including the locations of rooms, equipment, passageways, and important exits, as well as the radiation dose distribution within the internal building bays of a nuclear power plant, consistent with reality. The structural accuracy and data precision ensure that the simulation training environment is consistent with actual nuclear power plant operation.
[0049] The hands-on interactive module is developed based on the completed 3D simulation scene and the operating environment of a lightweight head-mounted VR all-in-one machine, forming a simulation software system with interactive capabilities.
[0050] The hands-on interactive module uses a VR all-in-one device to run simulation software, loading a 3D simulation scene onto the device's head-mounted display. Users interact with the 3D simulation scene using the VR head-mounted display and controllers, performing operations such as viewpoint movement, rotation, interface clicks, and model selection to complete the operational tasks required by the scene.
[0051] The hands-on interactive module allows trainees to interact with a 3D simulation scene. This module includes a scene interaction unit, a task simulation unit, and a multi-person interaction unit.
[0052] The scene interaction unit allows trainees to enter a 3D simulation of a nuclear power plant and perform various interactive operations. Wearing a VR headset, trainees enter the virtual environment of the nuclear power plant and perform actions similar to real-world walking, climbing, and equipment viewing. Interaction methods include pressing the directional keys on the VR controller to move the view in all directions; pressing the function keys to bring up a parabolic ray and cursor for instantaneous view movement; alternating between the left and right controllers near ladders to climb up and down; and using the controllers to point at equipment labels using an interactive ray. The scene interaction unit enables trainees to enter the virtual environment of the nuclear power plant and perform interactive operations.
[0053] The task simulation unit allows trainees to enter a 3D simulation environment of a nuclear power plant and perform various simulated tasks. Building upon interactive scenarios, the task simulation unit incorporates more interactive elements into the VR headset, combining actual nuclear power plant operations to simulate tasks such as equipment inspection, valve operation, and emergency response within a virtual environment. After receiving a task assigned by the instructor, the scene immediately switches to the task's starting point and a timer begins. Trainees should follow the on-screen instructions and utilize the system's interactive features to reach the designated room and complete the specified operations until the entire task is completed. If a trainee enters a high-radiation or sensitive area, the system automatically issues an alarm. The task simulation unit provides trainees with task simulations within a virtual environment.
[0054] The multi-person interactive unit allows multiple trainees to simultaneously enter a 3D simulation scene of a nuclear power plant for collaborative or competitive simulations. Based on task simulation, the multi-person interactive unit allows multiple participants to complete designated tasks through collaboration or competition within a specific scenario. There are two modes: collaborative and competitive. In collaborative mode, multiple people work together to complete tasks within the same scene, such as operating different equipment at different locations within a specified time and then communicating to confirm their results. In competitive mode, multiple people receive the same task in their own independent scenes and begin execution simultaneously. Upon completion, an assessment module scores and evaluates their performance. The multi-person interactive unit connects multiple VR headsets for data exchange, enabling multiple trainees to interact within the same virtual environment.
[0055] The hands-on interactive module provided by this invention uses a lightweight head-mounted VR all-in-one device, providing an immersive nuclear power plant simulation experience. After wearing the VR all-in-one headset and controllers, trainees can enter the virtual environment of a nuclear power plant and perform interactive operations such as walking and climbing. It also includes task scenario execution simulations, allowing trainees to complete designated tasks based on work orders assigned by the scenario monitoring module, such as equipment inspection, valve operation, and emergency response. Preferably, the hands-on interactive module also features multi-user online functionality, allowing multiple users to participate in collaborative tasks or competitions.
[0056] The scene monitoring module is a client software designed for controlling the practical training process. Through data communication with the VR all-in-one machine, it enables online interaction between instructors and students. The module mainly includes functions such as task allocation, screen monitoring, process intervention, and data recording.
[0057] The scene monitoring module is used for process management of the hands-on interaction module. This module sends data to the VR all-in-one device via the network to realize task setting and process intervention of the hands-on interaction scene. It monitors the hands-on screen and records operation data by receiving scene data from the VR all-in-one device.
[0058] The task assignment unit provides instructors with the option to select and assign practical training tasks. The task assignment unit interface displays the connection status of each student's VR headset and shows the currently waiting student IDs. It also includes a task list, displaying the task name, description, scoring criteria, and task type. After selecting a task, the instructor can assign it to a designated waiting student and notify the student to begin execution.
[0059] The video monitoring unit is used to monitor the practical training process. The interface of the monitoring unit contains a list of trainees currently performing a task. The list displays the trainee's ID and current status information, such as walking, climbing, stopping, or operating equipment. When a trainee mistakenly enters an incorrect area, an alarm status message is displayed simultaneously. When a trainee is selected, a 3D view of the scene in which that trainee is located is displayed on the interface. The viewing angle can be switched between the trainee's first-person perspective and a bird's-eye view.
[0060] The process intervention unit is used to intervene in the practical training process in real time. The process intervention unit has several preset intervention operation types, mainly including two types of intervention operations: temporary isolation and emergency evacuation. Temporary isolation allows instructors to set up isolation warning zones in the scenario during the students' task, testing the students' ability to respond to route changes; emergency evacuation intervention notifies students to immediately stop the current operation and evacuate to the designated location within a specified time, assessing the students' familiarity with the evacuation route.
[0061] The data recording unit is used to record trainees' practical training actions. It automatically records all actions taken by trainees during task execution, serving as the basis for scoring calculations. It also records trainee training batch information and historical scoring information, and the module provides a query interface for relevant data.
[0062] The scene monitoring module provided by this invention is designed for process control of hands-on interaction. This module is deployed independently on a PC and is in the same network environment as the VR all-in-one machine, enabling online interaction between instructors and students. It mainly includes functions such as scene specification, task allocation, screen monitoring, process intervention, and data recording.
[0063] The assessment and scoring module is a data judgment system running in the system backend. The system consists of two parts: score calculation and score display. The score calculation involves the system judging and scoring the student's operation record data, based on factors such as total task duration, route distance, radiation dose, and intervention treatment. The score display involves the system sending the scoring results to each module after the task is completed, displaying the final score on the student's hands-on interactive screen and the instructor's scene monitoring screen.
[0064] The assessment and scoring module provided by this invention assesses and scores practical interactions. This module records the operation status of each trainee in real time, conducts practical assessments based on the work order tasks assigned by the instructor, and comprehensively scores trainees based on factors such as route selection, dose absorption, intervention event handling, and task completion time. The scoring results can be saved and viewed through the scene monitoring module.
[0065] In addition, the present invention also provides a method for training personnel in nuclear power plants to prevent them from going to the wrong interval, comprising the following steps:
[0066] Step 1: Trainees wear VR all-in-one devices to run the practical simulation module, enter the three-dimensional simulation scene of the nuclear power plant, and wait for the task to be assigned.
[0067] Step 2: The instructor runs the scenario monitoring module on the PC and assigns practical simulation tasks to the current trainees.
[0068] Step 3: After receiving the task, the trainee performs the corresponding operation in the VR all-in-one device according to the on-screen instructions.
[0069] Step 4: During the task execution, the instructor can monitor the footage from each student's perspective.
[0070] Step 5: During the task execution, the instructor can insert intervention operations into the scenario to simulate various emergencies on site, and the trainees can respond accordingly based on the prompts and changes in the scenario.
[0071] Step 6: After completing the task, the student receives their score and exits the task scene.
[0072] Step 7: After the training is completed, the instructor can access the training records at any time to view the students' historical scores.
[0073] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.
Claims
1. A training system for preventing personnel from going to the wrong interval in a nuclear power plant, characterized in that, include: The 3D simulation scene module is used to create a 3D model of the nuclear power plant's geometry, environmental layout, and radiation field distribution. The hands-on interactive module is used to enable trainees to interact with the 3D simulation scene; The scene monitoring module is used for process management of the hands-on interaction module; The assessment and scoring module is used to record the operation status of each trainee in real time and conduct practical assessments based on the work order tasks assigned by the instructor. The process of realizing the 3D radiation field distribution involves establishing the coordinates and dose values of each grid in 3D space based on the radiation field data output by the calculation program. A line is emitted from the location of the observation camera towards the center of the grid bounding box, and the grid bounding box is sliced in a direction perpendicular to the ray. Based on the geometric position information and color configuration information of the slices, triangular mesh faces and texture data are generated. Then, they are submitted to the GPU for rendering one by one from back to front. The color field is constructed by the slices formed by scattering inside each grid, and finally the radiation field effect in the 3D model is realized.
2. The nuclear power plant personnel error prevention training system according to claim 1, characterized in that, In structural environment modeling, the 3D simulation scene module builds a 3D model of the overall structure and internal environment of the nuclear power plant. Based on the drawings, the nuclear power plant structures, passages, and stairs are modeled in the forward direction, and then the interior detail models of the rooms are reconstructed by referring to the on-site 3D laser scanning data.
3. The nuclear power plant personnel error prevention training system according to claim 2, characterized in that, The established model undergoes global lightweighting, which mainly includes reducing model triangles, optimizing material textures, and arranging scene lighting after publishing to the 3D engine.
4. The nuclear power plant personnel error prevention training system according to claim 1, characterized in that, The radiation dose monitoring data at the nuclear power plant site is synchronized to the three-dimensional model. The location and intensity of each radiation measuring point in the three-dimensional model are configured, and the distribution of the radiation dose field in space is calculated based on the location and intensity of each radiation measuring point.
5. The nuclear power plant personnel error prevention training system according to claim 1, characterized in that, The hands-on interactive module includes: The scene interaction unit is used by trainees to enter the 3D simulation scene of the nuclear power plant and perform various interactive operations. The task simulation unit is used by trainees to enter a 3D simulation scene of a nuclear power plant and perform various simulation tasks. The multi-person interactive unit is used for multiple trainees to simultaneously enter a 3D simulation scene of a nuclear power plant for simulated collaboration or competition.
6. The nuclear power plant personnel error prevention training system according to claim 5, characterized in that, Based on scene interaction, the task simulation unit adds more interactive elements to the VR all-in-one machine, combining the actual working process of a nuclear power plant, to realize task simulation in a virtual environment.
7. The nuclear power plant personnel error prevention training system according to claim 1, characterized in that, The scene monitoring module includes: The task allocation unit is used to provide instructors with the option to select and allocate practical training tasks. The video monitoring unit is used to monitor the practical training process; The process intervention unit is used to intervene in the practical training process in real time. The data recording unit is used to record the trainees' practical training behaviors.
8. The nuclear power plant personnel error prevention training system according to claim 1, characterized in that, The scene monitoring module sends data to the VR all-in-one device via the network to enable task setting and process intervention in the interactive scene. It also monitors the interactive screen and records operation data by receiving scene data from the VR all-in-one device.
9. A training method based on the nuclear power plant personnel error prevention training system according to any one of claims 1 to 8, characterized in that, Includes the following steps: Step 1: Trainees wear VR all-in-one devices to run the practical simulation module, enter the 3D simulation scene of a nuclear power plant, and wait for the task to be assigned; Step 2: The instructor runs the scenario monitoring module on the PC and assigns practical simulation tasks to the current trainees; Step 3: After receiving the task, the trainee performs the corresponding operation in the VR all-in-one device according to the on-screen instructions; Step 4: During the task execution, the instructor monitors the footage from each student's perspective. Step 5: During the student's task execution, the instructor inserts intervention operations into the scenario to simulate various unexpected situations on site, and the student responds accordingly based on the prompts and changes in the scenario; Step 6: After completing the task, the student receives their score and exits the task scenario; Step 7: After the training is completed, the instructor can access the training records at any time to view the students' historical scores.