Limited space accident rescue VR training system

Abstract

The invention discloses a confined space accident rescue VR training system. The system comprises a virtual environment simulation module used for simulating a dynamic environment, a static scene and an illumination and sound environment of a confined space; the virtual accident simulation module sets various trigger factors causing the limited space accident according to the dynamic environment, the static scene, the illumination environment and the sound environment of the limited space, and is used for establishing a comprehensive parameter monitoring system, monitoring various key parameters in the limited space in real time and evaluating and predicting the environment change in the limited space; the accident rescue VR module evaluates an accident, selects a rescue tool through handle operation and executes rescue operation; and the training examination module is used for examining the accident rescue operation in the limited space and customizing matched training suggestions according to an examination result. A vivid real limited space accident scene is created by using a virtual reality technology, and immersive experience is provided for students, so that the participation degree and concentration degree of the students are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of accident rescue simulation, and more specifically, to a confined space accident rescue VR training system. Background Art

[0002] In recent years, there have been many tragic cases of multiple deaths among rescue workers in confined space operation accidents. The main reason is that the rescue workers have not received professional training, are eager to save people but fail to take protective measures, and blindly rescue people, resulting in increased casualties.

[0003] At present, the training of confined space accident rescue is not closely integrated with theory and practice. The training is more focused on theory, and the practical scenarios are limited. Some preset scenarios are difficult to simulate complex and changeable actual scenarios. The training methods are mostly video and text lectures, lacking hands-on practical training, and cannot produce deep memory. Moreover, there is a gap in VR training for confined space accident rescue in China. Summary of the invention

[0004] In order to solve at least one of the above technical problems, the present invention proposes a VR training system for confined space accident rescue.

[0005] A first aspect of the present invention provides a confined space accident rescue VR training system, comprising:

[0006] Virtual environment simulation module, used for dynamic environment, static scene, lighting and sound environment simulation in limited space;

[0007] A virtual accident simulation module, the virtual accident simulation module is electrically connected to the virtual environment simulation module, the virtual accident simulation module sets a variety of triggering factors that lead to confined space accidents according to the dynamic environment, static scene, lighting, and sound environment of the confined space, and is used to establish a comprehensive parameter monitoring system, conduct real-time monitoring of a variety of key parameters in the confined space, evaluate and predict environmental changes in the confined space, and simulate the development process of the accident;

[0008] Accident rescue VR module: assess the accident, select rescue tools and perform rescue operations through handle operation;

[0009] The training and assessment module is used to assess the relevant theoretical knowledge, practical operational skills and emergency response of confined space accident rescue operations, and customize matching training suggestions based on the assessment results.

[0010] In a preferred embodiment of the present invention, it also includes a VR headset and a handle, and the VR headset and the handle are interactively connected by signals.

[0011] In a preferred embodiment of the present invention, the virtual environment simulation module uses a 3D modeling tool to achieve static scene simulation in a limited space, which is used to show the real material, texture and size of static objects. The 3D modeling tool includes 3DMax or Maya;

[0012] The static scene includes underground limited space, above-ground limited space and enclosed equipment;

[0013] The underground limited space includes basements, underground warehouses, underground projects, underground pipe trenches, underground trenches, tunnels, culverts, pits, deep foundation pits, abandoned wells, cellars, inspection well rooms, biogas tanks, septic tanks and sewage treatment tanks;

[0014] The above-ground limited space includes wine lees tanks, fermentation tanks, pickling tanks, pulp tanks, granaries and silos;

[0015] The enclosed equipment includes ship cabins, storage tanks, vehicle-mounted tanks, reactors, kilns, furnaces, flues and pipelines, and boilers.

[0016] In a preferred embodiment of the present invention, the multiple key parameters in the confined space include temperature, humidity, air pressure, gas concentration, equipment operating status, operation records, and environmental factors;

[0017] The equipment operating status includes voltage, current and rotation speed; the environmental factors include light intensity and sound decibels; the operation record includes operation time, operation steps and operation object.

[0018] In a preferred embodiment of the present invention, it also includes a data simulation server, which is electrically connected to the virtual accident simulation module. The data simulation server is used to transmit the collected multiple key parameters to the simulation data server in real time, make result judgments through algorithm analysis and processing, generate alarms, and initiate emergency event response.

[0019] In a preferred embodiment of the present invention, the accident rescue VR module is electrically connected to the limited space monitoring module and the multi-person collaboration module;

[0020] The confined space monitoring module provides panoramic monitoring of the rescuer's environment and rescue operations based on the projection of the rescuer entering the confined space seen by the VR device;

[0021] The multi-person collaboration module is used to build a multi-person interactive rescue scenario. Trainees share information and discuss rescue strategies through real-time communication functions, assign tasks to different trainees, and use VR strategy plans to prompt and direct rescue and medical treatment of rescued trapped people by medical personnel.

[0022] In a preferred embodiment of the present invention, the rescue tools include personal protective equipment and respiratory protective equipment, gas detectors and life detectors, stretchers and first aid equipment, and ventilation equipment;

[0023] The first aid equipment includes oxygen bags, cardiopulmonary resuscitation equipment, and tourniquets;

[0024] The personal protective equipment includes protective clothing, protective gloves and protective shoes.

[0025] In a preferred embodiment of the present invention, the triggering factors of the confined space accident include illegal operation, equipment failure and environmental change, and the cause and process of the accident are analyzed according to the triggering factors of the confined space accident;

[0026] Setting standard operating procedures and specifications, and storing the standard operating procedures and specifications in a database, wherein the standard operating procedures are stored in a system database, wherein the standard operating procedures and specifications include normal operating methods, safety precautions and emergency response measures for equipment in a confined space;

[0027] Determine whether the trainees’ operation records in the virtual environment are consistent with the standard operating procedures;

[0028] If the trainee's operation record does not conform to the standard operating procedures, it is judged that there is an illegal operation and the consequences of the illegal operation are analyzed.

[0029] In a preferred embodiment of the present invention, the equipment failure analysis process includes:

[0030] Establish equipment fault diagnosis model to monitor and analyze the equipment's operating status in real time based on the equipment's operating principle, structural characteristics, and historical fault data information;

[0031] Determine whether there is a fault. When a device fails, analyze the abnormal changes in device parameters, including voltage fluctuations, current increases, and abnormal speeds;

[0032] Determine the type and extent of equipment failure.

[0033] In a preferred embodiment of the present invention, the lighting and sound environment simulation includes parameter settings of lighting conditions, and the parameter settings include intensity parameters, color parameters and direction parameters; the intensity parameters are used to simulate the strength of natural light colors and artificial lighting colors in different time periods and weather conditions; the color parameters adjust the natural light color over time and as the weather changes; the artificial lighting color is selected based on the equipment and scene, including red or yellow light for warning lights and white light for normal working lighting; the direction parameters simulate the direction of natural light based on the position of the sun, and the direction of artificial lighting is adjusted based on the equipment location and usage requirements.

[0034] The above technical solution of the present invention has the following advantages compared with the prior art:

[0035] (1) Through virtual scenes, simulate actual complex and changing environment training to improve the skills of rescue personnel. Through VR virtual interactive operations, the hands and brain are used together to fully restore the rescue operation process in real scenes. With the training and examination system, the self-safety protection awareness of rescue personnel is cultivated.

[0036] (2) Virtual reality technology is used to create a 1:1 highly realistic confined space accident scene, giving trainees an immersive experience, thereby improving their participation and concentration. At the same time, the system provides abundant practical operation opportunities, making up for the shortcomings of traditional training, and can also be personalized according to the different levels and needs of trainees.

[0037] (3) Through accident simulation, the data server can simulate the evolution of the confined space environment of a real factory based on past data, generate random accidents, and incorporate them into the training system to turn them into uncertain accidents, making virtual rescue more realistic. Trainees can not only protect themselves in the virtual environment, but also rescue trapped people in an orderly and scientific manner.

[0038] (4) Through real accident simulation, trainees can experience the dangers and consequences firsthand, thereby enhancing their safety awareness. In a virtual environment, trainees can be exposed to potential risk factors and improve their risk identification and assessment capabilities. Simulating sudden accident scenarios can also train trainees' emergency response and decision-making capabilities.

[0039] (5) Through practical exercises, students can receive training with real-world value. Training can be conducted anywhere without the need for an actual site, saving costs for site construction and maintenance. The virtual environment can be reused, saving resources and costs, and avoiding the risk of accidents that students face in actual operations, reducing casualties and property losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, some of the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 This is a block diagram of a VR training system for confined space accident rescue according to an embodiment of the present invention;

[0042] Figure 2 It is a schematic diagram of the rescue process of a confined space accident according to an embodiment of the present invention. DETAILED DESCRIPTION

[0043] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0044] In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention.

[0045] However, the present invention may also be implemented in other ways than those described herein.

[0046] Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0047] Embodiment 1

[0048] See also Figure 1-Figure 2 As shown, the present invention proposes a confined space accident rescue VR training system, comprising:

[0049] Virtual environment simulation module, used for dynamic environment, static scene, lighting and sound environment simulation in limited space;

[0050] A virtual accident simulation module is electrically connected to a virtual environment simulation module. The virtual accident simulation module sets a variety of triggering factors that lead to confined space accidents according to the dynamic environment, static scene, lighting and sound environment of the confined space. The module is used to establish a comprehensive parameter monitoring system, conduct real-time monitoring of a variety of key parameters in the confined space, evaluate and predict environmental changes in the confined space, and simulate the development process of the accident.

[0051] Specifically, when simulating dynamic environmental changes, the VR system simulates changes in environmental factors such as temperature, humidity, and air pressure in a limited space. Different types of accidents have different effects on temperature and humidity. For example, a fire accident will cause the temperature to rise sharply and the humidity may decrease, while a water leakage accident will significantly increase the humidity. When setting parameters, it is necessary to combine the specific accident simulation scenario to ensure that the changes in temperature and humidity are in line with the logic of the accident development. At the same time, consider possible abnormal situations such as water leakage and air leakage, as well as human feelings and safety standards, so that trainees can experience the challenges of a real working environment. Temperature and humidity will change accordingly with the development of the accident. The operations of trainees in the virtual environment can also affect their changes. Random events can also be set to increase the authenticity and challenge of training. The temperature adjustment range is wide, and the temperature in a limited space can be adjusted within different ranges. The humidity is usually adjusted between 30% and 90%.

[0052] Accident rescue VR module: assess the accident, select rescue tools and perform rescue operations through handle operation;

[0053] The training and assessment module is used to assess the relevant theoretical knowledge, practical skills and emergency response of confined space accident rescue operations, and customize matching training suggestions based on the assessment results. The training and assessment module conducts a comprehensive assessment of the trainees' rescue performance. By setting accident scenarios and assessment tasks of different difficulty levels, the system tests the trainees' mastery of the VR rescue process, their understanding of the accident simulation algorithm, and their teamwork ability. The system will generate a detailed assessment report and provide targeted suggestions for further training of the trainees. The assessment report can include specific data indicators such as the trainees' operational accuracy rate during the rescue process reaching 80% or more for excellent, 60% to 80% for good, and below 60% for the need for further improvement.

[0054] Specifically, the theoretical knowledge assessment includes a theoretical knowledge test on confined space accident rescue, including accident types, risk factors, rescue methods, etc., to test the students' mastery of theoretical knowledge.

[0055] The operational practice skills assessment is to assess the trainees' proficiency in operational skills such as the use of rescue tools and the execution of rescue procedures through actual operational tasks in a virtual environment.

[0056] The emergency response assessment assesses the students' emergency response and decision-making abilities by simulating emergency accident scenarios. Students need to take correct rescue measures within the specified time, including timely gas collection, temperature detection, internal harmful gas exceeding the standard, physical health of trapped persons, and current physical condition of rescuers. These data will be input into the data server, and the algorithm will continue to adjust the best rescue plan. Students need to take emergency response and follow the operation. Each set of plans will correspond to possible abnormal situations. In the case of improper operation in emergency response, there will be prompts and scores will be recorded. Finally, they will be summarized into the assessment form to help improve the students' abilities. Through a comprehensive and in-depth detailed analysis of the students' assessment results, the advantages and disadvantages of the students in rescue operations are accurately pointed out. On this basis, personalized training suggestions are tailored for students so that they can improve their abilities in a targeted manner. During the intense practical training, the students' rescue operations are carefully scored according to strict standards, and objective and accurate scores are given in a timely manner.

[0057] like Figure 1As shown in the figure, in this system, the 1:1 virtual scene module provides students with a highly realistic confined space environment, making them feel as if they are in a real rescue scene. The virtual scene can accurately restore the size of the confined space. For example, the equipment layout and pipeline direction of an underground pipe gallery with a length of 10 meters, a width of 5 meters, and a height of 3 meters are consistent with the actual scene, with an error of no more than 5 centimeters. The data simulation server, as the core support of the system, stores a large amount of confined space data and accident case information, providing a data basis for the operation of each module. Among them, it contains environmental parameters of thousands of different types of confined spaces, when the temperature ranges from 5°C to 40°C, the humidity ranges from 30% to 90%, etc., as well as detailed data of hundreds of real accident cases.

[0058] The VR limited space simulation module works closely with the virtual accident simulation module. Through the data provided by the data simulation server, the VR limited space simulation module accurately constructs the scene details of the limited space, including equipment layout, space structure, etc. When simulating the limited space of a chemical plant, it can accurately present the position and status of various reactors, pipelines, and valves. The virtual accident simulation module uses the accident simulation algorithm to simulate the occurrence and development process of accidents according to different accident types, such as fire and toxic gas leakage, including the diffusion speed of toxic gas leakage, which can reach 0.5 meters to 1 meter per second; the spread trend of the fire, the fire can expand by 2 to 3 square meters per minute, etc. In this process, students can intuitively feel the severity of the accident and be mentally prepared for subsequent rescue operations.

[0059] When an accident occurs, trainees interact with the virtual environment through the VR rescue interaction module. They can choose appropriate rescue tools and perform rescue operations, such as wearing respiratory protective equipment and using ventilation equipment. In this process, the system will provide real-time feedback based on the trainees' operations to help them continuously optimize their rescue strategies. The positive pressure air respirator selected by the trainees in the virtual space can be used for 30 to 60 minutes depending on the intensity of the work. The limited space monitoring module provides trainees with a full range of accident scene perspectives, allowing them to keep abreast of the dynamic changes of the accident and grasp the location and condition of the trapped persons. Through the perspectives simulated by multiple high-definition cameras, it is possible to clearly see the distance of the trapped persons from the rescue entrance to an accuracy of 0.1 meters, as well as their vital signs data, when the heart rate is between 60 and 100 beats per minute, etc. At the same time, the multi-person collaboration module allows trainees to work as a team in a virtual environment, and through real-time communication, task allocation and other functions, jointly deal with complex accident situations and improve rescue efficiency. At the same time, in a large confined space accident, trainees can be divided into rescue group, medical group, technical group, etc., with 3 to 5 people in each group. Real-time communication is carried out through the voice communication system, and task allocation is accurate to specific operating steps.

[0060] According to an embodiment of the present invention, a VR head display and a handle are also included, and the VR head display and the handle are interactively connected by signals.

[0061] According to an embodiment of the present invention, the virtual environment simulation module uses a 3D modeling tool to achieve static scene simulation in a limited space, which is used to show the real material, texture and size of static objects. The 3D modeling tool includes 3DMax or Maya;

[0062] Static scenes include underground confined spaces, above-ground confined spaces and enclosed equipment;

[0063] Underground limited spaces include basements, underground warehouses, underground projects, underground pipe trenches, culverts, tunnels, culverts, pits, deep foundation pits, abandoned wells, cellars, inspection well rooms, biogas tanks, septic tanks and sewage treatment tanks;

[0064] The above-ground limited spaces include wine lees tanks, fermentation tanks, pickling tanks, pulp tanks, granaries and silos;

[0065] Closed equipment: ship holds, storage tanks, vehicle tanks, reactors, kilns, furnaces, flues and pipes, and boilers.

[0066] Specifically, the static scenarios and the corresponding risk table are shown in Table 1.

[0067] Table 1

[0068]

[0069]

[0070] According to an embodiment of the present invention, the various key parameters in a confined space include temperature, humidity, air pressure, gas concentration, equipment operating status, operation records, and environmental factors;

[0071] The equipment operating status includes voltage, current and speed; environmental factors include light intensity and sound decibels; operation records include operation time, operation steps and operation objects.

[0072] According to an embodiment of the present invention, it also includes a data simulation server, which is electrically connected to the virtual accident simulation module. The data simulation server is used to transmit the collected multiple key parameters to the simulation data server in real time, make result judgments through algorithm analysis and processing, generate alarms, and initiate emergency event response.

[0073] Specifically, as one of the core components of the system, the simulation data server is responsible for storing and generating simulation data of various confined space accidents. The simulation data includes but is not limited to parameters such as temperature, humidity, air pressure, gas concentration, equipment status, and information such as the time, location, and type of the accident. By reading and processing the simulation data, the system can simulate various real confined space accident scenarios in a virtual environment, allowing trainees to feel as if they were at the actual accident scene, thereby improving the effectiveness and quality of training.

[0074] Data source and update: There are two main sources of simulation data: first, through the analysis and organization of actual confined space accident cases, key accident parameters and characteristics are extracted as the basis of simulation data; second, professional mathematical models and algorithms are used to simulate and predict physical, chemical and other processes in confined spaces to generate richer and more accurate simulation data. In order to ensure the timeliness and accuracy of simulation data, the simulation data server will regularly update and optimize data, obtain environmental data in confined spaces in real time through connection with actual monitoring equipment, and incorporate it into the simulation data for analysis and processing. At the same time, the simulation data can also be adjusted and improved according to the feedback and training needs of trainees.

[0075] Data feedback: The students’ operations in the virtual environment will be fed back to the simulation data server, affecting the development and changes of the accident, thus achieving a more realistic interactive experience.

[0076] According to an embodiment of the present invention, the accident rescue VR module is electrically connected to the limited space monitoring module and the multi-person collaboration module;

[0077] The limited space monitoring module can monitor the rescuer's environment and rescue operations in a panoramic view based on the projection of the rescuer entering the limited space seen by the VR device; it plays an important role in the rescue of limited space accidents. Since the situation in the limited space is often unclear, people outside or above are not clear about what is happening inside, which can easily lead to blind rescue. With the help of simulated space, virtual reality technology can share the situation of entering the limited space with other members throughout the process. When carrying out rescue, the best treatment plan and the best rescue strategy can be selected. Through VR virtual technology, the camera of the rescuer entering the virtual limited space is set to mirror, so that rescuers using other devices or wearing VR devices can see the projection of entering the limited space, that is, they can see the rescuer's environment and his operations in a panoramic view. Once the rescuer encounters any situation, others can implement rescue in time; through VR virtual technology, when the rescuer enters the virtual limited space, the 3D model of the limited space can be programmed to make it partially translucent, that is, the basic structure of the 3D model of the limited space exists, and part of it is translucent, so that the whole process of the entrant can be clearly seen.

[0078] The multi-person collaboration module is used to build multi-person interactive rescue scenarios. Trainees share information and discuss rescue strategies through real-time communication functions, assign tasks to different trainees, and use VR strategy plans to prompt rescue and medical personnel to rescue and treat the trapped people who have been rescued. In the face of complex situations, trainees can make team decisions with the help of decision support tools such as virtual meeting spaces and information display panels, giving full play to their respective professional knowledge and experience. At the same time, the system will also conduct real-time evaluation of the collaboration effect and present the results in a visual way to help trainees and instructors understand the advantages and disadvantages for improvement. The multi-person collaboration module greatly improves the interactivity and practicality of limited space accident rescue training. In order to prevent the risk of collision caused by multi-person collaboration, VR is set as a safe area in each work area. After exceeding the safe area, passthrough is turned on, that is, VR is converted to MR (mixed reality) mode, so that other people can be seen during multi-person collaborative operations to prevent injuries caused by operation collisions.

[0079] According to an embodiment of the present invention, the rescue tools include personal protective equipment and respiratory protective equipment, gas detectors and life detectors, stretchers and first aid equipment, and ventilation equipment;

[0080] First aid equipment includes oxygen bags, CPR equipment, and tourniquets;

[0081] Personal protective equipment includes protective clothing, protective gloves and protective shoes.

[0082] Further, the process of selecting rescue tools is as follows:

[0083] Assessment of the accident. After receiving the warning from the accident warning system, which determines that the gas is harmful, the rescuers need to quickly determine the type of harmful gas, concentration, leakage source and possible spread range at the accident site. At the same time, they need to understand the number, location, degree of entrapment and health status of the trapped people. Through the collection of information, the rescuers can make a preliminary judgment on the severity of the accident and select the appropriate rescue tools.

[0084] Choose appropriate personal protective equipment and respiratory protective equipment. For harmful gas poisoning accidents, it is crucial to choose appropriate respiratory protective equipment. Common respiratory protective equipment includes self-contained positive pressure air breathing apparatus (SCBA) and filtering gas masks. Protective clothing should be chemically resistant and impermeable to protect the rescuers' bodies from harmful gases. The material and thickness of protective clothing should be selected according to the nature and concentration of harmful gases. Protective gloves and protective shoes should be chemically resistant to protect the hands and feet of rescuers.

[0085] Choose gas detectors and life detectors; carry portable gas detectors to monitor the concentration of harmful gases at the accident site in real time and provide accurate data support for rescue operations. Life detectors: In harmful gas poisoning accidents, trapped people may be in a coma or buried in ruins. Using life detectors can quickly determine the location of trapped people and improve rescue efficiency.

[0086] Select stretchers and first aid equipment; prepare stretchers and first aid equipment so that timely medical treatment can be provided after the trapped people are rescued. First aid equipment includes oxygen bags, cardiopulmonary resuscitation equipment, tourniquets, etc.

[0087] Use ventilation equipment; if the source of harmful gas leakage cannot be immediately closed, ventilation equipment can be used to accelerate the diffusion of harmful gases and reduce the concentration of harmful gases at the accident site. Ropes and slings: When performing rescue in a confined space, ropes and slings may be needed to rescue trapped people.

[0088] Operational skills training: For different rescue tools, corresponding operational skills training is set up, such as the correct way to wear a respirator, how to tie a rescue rope, etc., so that trainees can master the use of rescue tools.

[0089] Process step display: clearly display the various process steps of confined space accident rescue, including accident alarm, on-site investigation, formulation of rescue plan, implementation of rescue operations, etc., so that students can understand the standardized operation of the entire rescue process.

[0090] Process optimization feedback: Based on the students' performance in the rescue process, feedback suggestions for process optimization are provided to help students continuously improve the rescue process and improve rescue efficiency. In the limited space accident rescue system based on virtual reality, the triggering methods of rescue operations are rich and real. On the one hand, the accident scene triggers the need for rescue operations. When the virtual accident simulation module generates accident scenes such as toxic gas leakage and fire, students will realize that they need to take rescue actions when they see and hear these situations. In the case of a toxic gas leakage accident in a limited space of a chemical plant, students will hear the sound of gas leakage, see the color and diffusion state of the gas, which will trigger the selection of rescue tools such as respiratory protection equipment. System prompts can also trigger operations, guiding students to perform corresponding rescue operations in the form of text, voice or icons. When prompted to "detect the concentration of harmful gases", students will choose a gas detector and detect it in a virtual environment. Students' independent exploration and discovery of accident signs or trapped people will also trigger rescue operations, improving their observation and decision-making abilities. On the other hand, in VR, trainees use the handle to select rescue tools and perform rescue operations, press the handle button to select a positive pressure air respirator, use the handle rotation function to simulate the rotation of the water valve, touch virtual objects to trigger corresponding effects, and body motion sensing can also realize rescue operations. Using the body motion sensing function of the virtual reality device, trainees perform rescue operations through body movement and actions, such as approaching trapped people and carrying rescue equipment, etc., to enhance the realism and immersion of the operation. At the same time, the system enhances the realism and effect of the operation through visual and auditory feedback. When using rescue tools, corresponding effects and sounds appear, and there is positive feedback for successful completion of the task.

[0091] According to an embodiment of the present invention, the triggering factors of confined space accidents include illegal operations, equipment failures and environmental changes. The causes and processes of the accidents are analyzed based on the triggering factors of confined space accidents.

[0092] Set standard operating procedures and specifications, store the standard operating procedures and specifications in the database, and store them in the system database. The standard operating procedures and specifications include normal operating methods, safety precautions and emergency response measures for equipment in confined spaces;

[0093] Determine whether the trainees’ operation records in the virtual environment are consistent with the standard operating procedures;

[0094] If the trainee's operation record does not conform to the standard operating procedures, it is judged that there is an illegal operation and the consequences of the illegal operation are analyzed.

[0095] Specifically, non-compliance with the operating procedures includes failure to operate the equipment in the prescribed order, operation exceeding the safe load of the equipment, ignoring safety warnings, etc.; further combined with the parameter changes in the confined space, it is determined whether the illegal operation is related to the occurrence of the accident. For example, if the trainee's illegal operation causes abnormal changes in parameters such as equipment overheating and gas leakage, and these changes are in a time sequence with the occurrence of the accident, it can be determined that the illegal operation is one of the causes of the accident.

[0096] According to an embodiment of the present invention, the device failure analysis process includes:

[0097] Establish equipment fault diagnosis model to monitor and analyze the equipment's operating status in real time based on the equipment's operating principle, structural characteristics, and historical fault data information;

[0098] Determine whether there is a fault. When a device fails, analyze the abnormal changes in device parameters, including voltage fluctuations, current increases, and abnormal speeds;

[0099] Determine the type and extent of equipment failure.

[0100] Furthermore, when determining whether equipment failure is the cause of the accident, it is necessary to exclude the influence of other factors such as illegal operation and environmental changes. For example, if the equipment failure occurs when the trainee is operating normally and the environmental conditions are stable, then it can be determined that the equipment failure is the main cause of the accident.

[0101] Environmental change assessment, the process is as follows:

[0102] Monitor changes in environmental parameters. Monitor environmental parameters such as temperature, humidity, air pressure, gas concentration, etc. in a confined space in real time, and analyze the changing trends and magnitudes of these parameters.

[0103] Assess the impact of environmental changes on equipment and personnel. Environmental changes may cause equipment performance degradation, personnel physical discomfort and other problems, thereby increasing the risk of accidents. For example, high temperature environment may cause equipment to overheat and cause fire; high humidity environment may cause equipment corrosion and leakage, etc.

[0104] Determine the correlation between environmental changes and accidents. If the changes in environmental parameters are in chronological order with the occurrence of the accident, and the impact of environmental changes on equipment and personnel is consistent with the manifestation of the accident, then it can be determined that environmental changes are one of the causes of the accident.

[0105] After comprehensive analysis and judgment, the process is as follows:

[0106] Comprehensively consider the impact of factors such as illegal operation, equipment failure and environmental changes. When determining the cause of an accident, we cannot limit ourselves to a single factor, but need to consider the interaction of various factors.

[0107] Establish an accident cause analysis model. This model can comprehensively analyze and judge the cause of the accident based on the collected parameter data, operation records, fault diagnosis results and other information. Through the weight allocation and logical reasoning of different factors, the most likely cause of the accident can be obtained.

[0108] Provide detailed analysis reports. The system presents the results of the accident cause analysis to trainees and trainers in the form of a detailed report, which includes the process of the accident, the analysis results of various factors, and improvement suggestions. Trainees and trainers can understand the cause of the accident based on the information in the report, summarize the experience and lessons, and provide reference for future training and actual operation.

[0109] The dynamic prediction of accident development will simulate the development process of the accident, including the diffusion rate of toxic gas leakage, the spread trend of fire, etc., so that students can judge the severity of the accident in time and take corresponding measures. New values ​​are subsequently generated through equipment data collection and re-transmitted to the accident simulation module to provide examples for possible accident rescue in uncertain rescue drills.

[0110] Accident consequence display: Through visual and sound effects, the consequences of the accident are displayed, such as the condition of the injured, the degree of damage to the equipment, etc., so that students can deeply understand the dangers of confined space accidents.

[0111] According to an embodiment of the present invention, the lighting and sound environment simulation includes parameter settings of lighting conditions, and the parameter settings include intensity parameters, color parameters and direction parameters; the intensity parameters are used to simulate the intensity of natural light colors and artificial lighting colors in different time periods and weather conditions; the color parameters adjust the natural light color as time and weather change; the artificial lighting color is selected according to the equipment and scene, including red or yellow light for warning lights and white light for normal working lighting; the direction parameters simulate the direction of natural light according to the position of the sun, and the artificial lighting direction is adjusted according to the position of the equipment and usage requirements. There is a coordination relationship between lighting and equipment, and the lighting conditions affect the display effect of the equipment in the virtual environment. The equipment display can be adjusted according to the lighting to ensure that the trainees can accurately identify the function and position of the equipment; the lighting can also be used as a prompt for equipment operation, and specific lighting conditions can prompt the trainees to perform corresponding operations; at the same time, the lighting conditions can enhance the accident simulation effect, and the lighting needs to be adjusted for different accident types and scenes to increase the sense of reality and tension.

[0112] In summary, this application uses a variety of sensor technologies, such as inertial sensors, optical sensors, etc., and uses 3D modeling to present confined space facilities in detail. Trainees wear VR headsets and interact with the equipment through handles. The accident simulation module designs a variety of simulation scenarios based on actual confined space accidents to enhance the sense of reality. Trainees can use interactive devices to perform emergency operations.

[0113] The rescue operation module provides trainees with rescue tools. Trainees use the handle to select and use them, and the system gives prompts and feedback. This module can also set up multi-person collaborative scenes so that trainees can work together to complete tasks. The rescue process module displays the steps of the rescue process for confined space accidents. Trainees make interactive decisions through VR headsets and handles, and the system gives feedback to optimize the process. The training assessment module evaluates the training effect of trainees through various assessment methods, and the assessment results are presented in the form of reports to provide reference for subsequent training. In actual use, first, 3D modeling is used to allow trainees to observe and operate facilities with the help of VR headsets and handles. Then, simulated scenes are designed based on actual accidents to enhance the sense of reality, and trainees can perform emergency operations. Rescue tools are provided and operation prompts and feedback are given, and multi-person collaborative scenes are set up. The rescue process steps are displayed, and trainees make decisions through headsets and handles, and the system gives feedback to optimize the process. Trainees practice repeatedly to cultivate safety awareness and form muscle memory. Finally, multiple assessments are used to evaluate, and the results are presented in reports to provide reference for subsequent training.

[0114] This application simulates actual complex and changing environment training through virtual scenes to improve the skills of rescue personnel. Through VR virtual interactive operations, the hands and brain are used together to fully restore the rescue operation process in real scenes. It also comes with a training and examination system to cultivate the self-safety protection awareness of rescue personnel.

[0115] Virtual reality technology is used to create a 1:1 highly realistic real-life confined space accident scenario, giving trainees an immersive experience, thereby improving their participation and concentration. At the same time, the system provides abundant practical operation opportunities, making up for the shortcomings of traditional training, and can also be personalized according to the different levels and needs of trainees.

[0116] Through accident simulation, the data server can simulate the changes and evolution of the limited space environment of a real factory based on past data, generate random accidents, and incorporate them into the training system to turn them into uncertain accidents, making virtual rescue more realistic. Trainees can not only protect themselves in the virtual environment, but also rescue trapped people in an orderly and scientific manner.

[0117] Through real accident simulation, trainees can experience the dangers and consequences firsthand, thereby enhancing their safety awareness. In a virtual environment, trainees can be exposed to potential risk factors and improve their risk identification and assessment capabilities. Simulating emergency accident scenarios can also train trainees' emergency response and decision-making capabilities.

[0118] Through practical exercises, students can receive training with real-world value. Training can be conducted anywhere without the need for an actual site, saving costs for site construction and maintenance. The virtual environment can be reused, saving resources and costs, and avoiding the risk of accidents faced by students in actual operations, reducing casualties and property losses.

[0119] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0120] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to the above embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the above embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0121] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A VR training system for confined space accident rescue, characterized in that: include: Virtual environment simulation module, used for dynamic environment, static scene, lighting and sound environment simulation in limited space; A virtual accident simulation module, the virtual accident simulation module is electrically connected to the virtual environment simulation module, the virtual accident simulation module sets a variety of triggering factors that lead to confined space accidents according to the dynamic environment, static scene, lighting, and sound environment of the confined space, and is used to establish a comprehensive parameter monitoring system, conduct real-time monitoring of a variety of key parameters in the confined space, evaluate and predict environmental changes in the confined space, and simulate the development process of the accident; Accident rescue VR module: assess the accident, select rescue tools and perform rescue operations through handle operation; The training and assessment module is used to assess the relevant theoretical knowledge, practical operational skills and emergency response of confined space accident rescue operations, and customize matching training suggestions based on the assessment results.

2. The confined space accident rescue VR training system according to claim 1, characterized in that: It also includes a VR head display and a handle, and the VR head display and the handle are interactively connected by signals.

3. The confined space accident rescue VR training system according to claim 1, characterized in that: The virtual environment simulation module uses a 3D modeling tool to achieve static scene simulation in a limited space, which is used to show the real material, texture and size of static objects. The 3D modeling tool includes 3DMax or Maya. The static scene includes underground limited space, above-ground limited space and enclosed equipment; The underground limited space includes basements, underground warehouses, underground projects, underground pipe trenches, underground trenches, tunnels, culverts, pits, deep foundation pits, abandoned wells, cellars, inspection well rooms, biogas tanks, septic tanks and sewage treatment tanks; The above-ground limited space includes wine lees tanks, fermentation tanks, pickling tanks, pulp tanks, granaries and silos; The enclosed equipment includes ship cabins, storage tanks, vehicle-mounted tanks, reactors, kilns, furnaces, flues and pipelines, and boilers.

4. The confined space accident rescue VR training system according to claim 1, characterized in that: The various key parameters in a confined space include temperature, humidity, air pressure, gas concentration, equipment operating status, operation records, and environmental factors; The equipment operating status includes voltage, current and rotation speed; the environmental factors include light intensity and sound decibels; the operation record includes operation time, operation steps and operation object.

5. The confined space accident rescue VR training system according to claim 4 is characterized in that: It also includes a data simulation server, which is electrically connected to the virtual accident simulation module. The data simulation server is used to transmit the collected multiple key parameters to the simulation data server in real time, make result judgments through algorithm analysis and processing, generate alarms, and initiate emergency event response.

6. The confined space accident rescue VR training system according to claim 1, characterized in that: The accident rescue VR module is electrically connected to the limited space monitoring module and the multi-person collaboration module; The confined space monitoring module provides panoramic monitoring of the rescuer's environment and rescue operations based on the projection of the rescuer entering the confined space seen by the VR device; The multi-person collaboration module is used to build a multi-person interactive rescue scenario. Trainees share information and discuss rescue strategies through real-time communication functions, assign tasks to different trainees, and use VR strategy plans to prompt and direct rescue and medical treatment of rescued trapped people by medical personnel.

7. The confined space accident rescue VR training system according to claim 1, characterized in that: The rescue tools include personal protective equipment and respiratory protection equipment, gas detectors and life detectors, stretchers and first aid equipment, and ventilation equipment; The first aid equipment includes oxygen bags, cardiopulmonary resuscitation equipment, and tourniquets; The personal protective equipment includes protective clothing, protective gloves and protective shoes.

8. The confined space accident rescue VR training system according to claim 1, characterized in that: The triggering factors of the confined space accident include illegal operation, equipment failure and environmental changes. The cause and process of the accident are analyzed according to the triggering factors of the confined space accident. Setting standard operating procedures and specifications, and storing the standard operating procedures and specifications in a database, wherein the standard operating procedures are stored in a system database, wherein the standard operating procedures and specifications include normal operating methods, safety precautions and emergency response measures for equipment in a confined space; Determine whether the trainees’ operation records in the virtual environment are consistent with the standard operating procedures; If the trainee's operation record does not conform to the standard operating procedures, it is judged that there is an illegal operation and the consequences of the illegal operation are analyzed.

9. The VR training system for confined space accident rescue according to claim 1, characterized in that: The equipment failure analysis process includes: Establish equipment fault diagnosis model to monitor and analyze the equipment's operating status in real time based on the equipment's operating principle, structural characteristics, and historical fault data information; Determine whether there is a fault. When a device fails, analyze the abnormal changes in device parameters, including voltage fluctuations, current increases, and abnormal speeds; Determine the type and extent of equipment failure.

10. The confined space accident rescue VR training system according to claim 1, characterized in that: The lighting and sound environment simulation includes the parameter settings of lighting conditions, including intensity parameters, color and direction parameters; the intensity parameters are used to simulate the intensity of natural light colors and artificial lighting colors in different time periods and weather conditions; the color parameters adjust the natural light color over time and as the weather changes; the artificial lighting color is selected based on the equipment and scene, including red or yellow light for warning lights and white light for normal working lighting; the direction parameters simulate the direction of natural light according to the position of the sun, and the direction of artificial lighting is adjusted based on the equipment location and usage requirements.

Images