Gas detection system and method for virtual reality technology drilling

Abstract

The invention provides a gas detection system and method for virtual reality technology drilling. The system comprises a virtual reality interaction module and an entity hardware module, the virtual reality interaction module is used for generating a drilling scene containing a virtual gas detector model; the physical hardware module is also used for determining a theoretical gas concentration value of a virtual position where the virtual gas detector model is located based on the drilling scene, and sending the theoretical gas concentration value as a gas concentration control instruction to the physical hardware module; the entity hardware module is configured to have an operable physical structure consistent with that of a real gas detector; the entity hardware module comprises a first communication unit, a gas sensor simulation unit and an entity display screen. According to the technical scheme provided by the invention, through virtual-real deep fusion and bidirectional closed-loop feedback, the problems of lack of operation reality sense and disjunction of man-machine feedback in traditional VR training are solved.

Description

Technical Field

[0001] This application relates to the field of mine emergency rescue simulation exercise technology, and in particular to a gas detection system and method for virtual reality technology exercises. Background Technology

[0002] Virtual reality (VR) technology, due to its immersive and highly interactive nature, has been widely used in mine safety operation training and emergency drills. By constructing highly realistic virtual mine scenarios, trainees can become familiar with equipment operation procedures and practice accident response measures under risk-free conditions, effectively making up for the shortcomings of traditional on-site training, which is characterized by high costs, high risks, and limited scenarios.

[0003] Several VR-based mine training solutions already exist in the technology. For example, invention patent CN108230804A discloses a virtual reality mine emergency drill and operational skills training method and system. This solution uses head-mounted displays, data gloves, and other detection terminals to enable trainees to complete standardized operational exercises and accident emergency drills for jobs such as gas inspection in a virtual environment. The system achieves the purpose of training and assessment by judging whether the trainee's interactive actions in the virtual environment are correct.

[0004] However, the inventors of this application discovered during in-depth research and practice that such existing VR training solutions generally suffer from the following problems: First, in existing solutions, trainees interact with virtual equipment models (such as virtual gas detectors) using common interactive devices like data gloves and handles. This interaction method can only simulate simple actions such as grasping and clicking. The training content is too simplistic and unrealistic, failing to provide the tactile, weight-based, button-feeling, and operational logic feedback of a real instrument. Trainees cannot develop subconscious operating habits and muscle memory for the real equipment through repeated operation, significantly reducing the efficiency of transferring training results to actual work scenarios. The lack of realism in operation makes it difficult to form muscle memory.

[0005] Secondly, for the detection of key parameters such as gas concentration, existing solutions merely display a numerical value or trigger a virtual alarm on a virtual screen. What trainees see, hear, and feel is entirely confined to the virtual world, disconnected from the physical equipment they are handling. This purely virtual feedback method makes trainees feel more like they are playing a screen-based game, lacking the subjective judgment, decision-making tension, and human-machine integration experience required when facing real instruments. The immersive experience of the training is limited, and overall, there is a disconnect between perception and feedback, resulting in insufficient immersion and training depth.

[0006] Third, because the interaction occurs at the virtual level, the system primarily assesses the trainee's sequence and timing of virtual button operations. It cannot collect and evaluate key behaviors when the trainee operates real equipment, such as the stability of holding the instrument, the focusing process between the line of sight and the physical dial, and the precise operation of physical buttons. This makes the assessment results unable to comprehensively and accurately reflect the trainee's actual hands-on ability and operational proficiency, resulting in a single assessment dimension and an inability to accurately quantify practical skills.

[0007] Therefore, there is an urgent need in this field for a gas detection solution for virtual reality technology drills that deeply integrates real equipment operation training with virtual scenario safety drills in order to systematically solve the above problems. Summary of the Invention

[0008] This application provides a gas detection system and method for virtual reality technology training, in order to at least solve the technical problems of "unrealistic operation, human-machine disconnect, and difficulty in skill transfer" caused by the lack of real equipment operation and physical feedback in traditional VR safety training.

[0009] The first aspect of this application provides a gas detection system for virtual reality technology exercises, the system comprising: a virtual reality interaction module and a physical hardware module; The virtual reality interaction module is used to generate a training scenario that includes a virtual gas detector model. The virtual reality interaction module is also used to determine the theoretical gas concentration value of the virtual location of the virtual gas detector model based on the exercise scenario, and send the theoretical gas concentration value as the gas concentration control command to the physical hardware module. The physical hardware module is configured to have an operable physical structure consistent with that of a real gas detector. The physical hardware module includes: The first communication unit is used to receive gas concentration control commands from the virtual reality interaction module; A gas sensor simulation unit is used to respond to the gas concentration control command by outputting an analog electrical signal corresponding to the gas concentration in the gas concentration command; A physical display screen is used to display the gas concentration based on the analog electrical signal.

[0010] Preferably, the physical hardware module further includes: An attitude sensor unit is used to collect the spatial pose data of the physical hardware module in real space; The first communication unit is further configured to send the spatial pose data to the virtual reality interaction module; The virtual reality interaction module is also used to control the position and posture of the virtual gas detector model in the training scenario based on the spatial pose data.

[0011] Furthermore, the physical hardware module also includes: A physical alarm unit is used to trigger an audible alarm and / or a visual alarm when the specified gas concentration exceeds a preset alarm threshold.

[0012] Furthermore, the gas sensor simulation unit includes: Sensor analog circuit, including controllable analog circuit; The main control unit is used to adjust the output of the sensor simulation circuit according to the gas concentration control command to simulate the response characteristics of a real gas sensor.

[0013] Furthermore, the virtual reality interaction module includes: The gas diffusion field model building unit is used to construct a gas diffusion field model in the exercise scenario based on physical laws. The theoretical gas concentration value is calculated and updated in real time based on the position of the virtual gas detector model in the gas diffusion field model.

[0014] Furthermore, the virtual reality interaction module includes: The virtual feedback unit is used to synchronously display the theoretical gas concentration value on the virtual display interface of the virtual gas detector model, and / or trigger a virtual sound and light alarm in the exercise scenario.

[0015] Furthermore, the system also includes: The evaluation module is used to collect and analyze the operation data of the physical hardware module, including physical button operation events; The evaluation module is also used to collect and analyze the deviation between the concentration value displayed by the physical hardware module and the theoretical gas concentration value; The evaluation module is also used to collect and analyze operation response time; The assessment module is also used to generate a quantitative assessment report for the operator based on the analysis results.

[0016] Furthermore, the physical hardware module supports multi-gas type simulation, and the gas concentration control command includes a gas type identifier; The gas sensor simulation unit selects the corresponding simulation output mode based on the gas type identifier.

[0017] A second aspect of this application provides a gas detection method for virtual reality technology exercises, the method comprising: Generate a training scenario containing a virtual gas detector model in the virtual reality interaction module; Acquire the spatial pose data of the physical hardware module in the real space, and use this data to drive the virtual gas detector model to be updated synchronously in the exercise scenario; Based on the virtual position of the exercise scenario and the virtual gas detector model, the current theoretical gas concentration value is determined; The theoretical gas concentration value is sent to the physical hardware module; The physical hardware module is controlled to respond to the theoretical gas concentration value, drive its gas sensor simulation unit to output the corresponding analog electrical signal, and display the corresponding concentration value on its physical display screen.

[0018] Preferably, the method further includes: When the theoretical gas concentration value exceeds the preset alarm threshold, the physical hardware module is controlled to trigger a physical alarm, and a virtual sound and light alarm is triggered synchronously in the exercise scenario. The method further includes: Record the operation data of the physical hardware module and the event sequence in the exercise scenario; The operation process is quantitatively analyzed based on predefined evaluation rules, and an evaluation report is generated.

[0019] The technical solutions provided by the embodiments of this application bring at least the following beneficial effects: This application proposes a gas detection system and method for virtual reality (VR) technology drills. The system includes a VR interaction module and a physical hardware module. The VR interaction module generates a drill scenario containing a virtual gas detector model. It also determines the theoretical gas concentration value at the virtual location of the virtual gas detector model based on the drill scenario and sends this theoretical gas concentration value as a gas concentration control command to the physical hardware module. The physical hardware module is configured to have an operable physical structure identical to a real gas detector. The physical hardware module includes a first communication unit for receiving the gas concentration control command from the VR interaction module; a gas sensor simulation unit for responding to the gas concentration control command and outputting an analog electrical signal corresponding to the gas concentration in the command; and a physical display screen for displaying the gas concentration based on the analog electrical signal. The technical solution proposed in this application, through deep integration of virtual and real elements and bidirectional closed-loop feedback, solves the problems of lack of realism and disconnect between human and machine feedback in traditional VR training. It effectively improves the immersion and training effect of emergency drills and supports quantitative evaluation of the practical process.

[0020] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a first structural diagram of a gas detection system for virtual reality technology drills according to an embodiment of this application; Figure 2 This is a block diagram of a physical hardware module provided according to an embodiment of this application; Figure 3 This is a structural diagram of a gas sensor simulation unit according to an embodiment of this application; Figure 4 A detailed structural diagram of a physical hardware module provided according to an embodiment of this application; Figure 5 This is a structural diagram of a virtual reality interaction module provided according to an embodiment of this application; Figure 6 This is a second structural diagram of a gas detection system for virtual reality technology drills provided according to an embodiment of this application; Figure 7 This is a flowchart illustrating a gas detection method for virtual reality technology simulation according to an embodiment of this application; Figure Labels Virtual reality interaction module 100, physical hardware module 200, first communication unit 201, gas sensor simulation unit 202, physical display screen 203, attitude sensor unit 204, physical alarm unit 205, sensor simulation circuit 2021, main control unit 2022, gas diffusion field model construction unit 101, virtual feedback unit 102, evaluation module 300, physical buttons 206, power supply unit 207. Detailed Implementation

[0022] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0023] This application proposes a gas detection system and method for virtual reality (VR) technology drills. The system includes a VR interaction module and a physical hardware module. The VR interaction module generates a drill scenario containing a virtual gas detector model. It also determines the theoretical gas concentration value at the virtual location of the virtual gas detector model based on the drill scenario and sends this theoretical gas concentration value as a gas concentration control command to the physical hardware module. The physical hardware module is configured to have an operable physical structure identical to a real gas detector. The physical hardware module includes a first communication unit for receiving the gas concentration control command from the VR interaction module; a gas sensor simulation unit for responding to the gas concentration control command and outputting an analog electrical signal corresponding to the gas concentration in the command; and a physical display screen for displaying the gas concentration based on the analog electrical signal. The technical solution proposed in this application, through deep integration of virtual and real elements and bidirectional closed-loop feedback, solves the problems of lack of realism and disconnect between human and machine feedback in traditional VR training. It effectively improves the immersion and training effect of emergency drills and supports quantitative evaluation of the practical process.

[0024] The following description, with reference to the accompanying drawings, describes a gas detection system and method for virtual reality technology exercises according to embodiments of this application.

[0025] Example 1 Figure 1 This is a structural diagram of a gas detection system for virtual reality technology drills according to an embodiment of this application, as shown below. Figure 1 As shown, the system includes: a virtual reality interaction module 100 and a physical hardware module 200; The virtual reality interaction module 100 is used to generate a training scenario containing a virtual gas detector model. The virtual reality interaction module 100 is also used to determine the theoretical gas concentration value of the virtual location of the virtual gas detector model based on the exercise scenario, and send the theoretical gas concentration value as the gas concentration control command to the physical hardware module 200. The physical hardware module 200 is configured to have an operable physical structure consistent with that of a real gas detector. The physical hardware module 200 includes: The first communication unit 201 is used to receive the gas concentration control command from the virtual reality interaction module; The gas sensor simulation unit 202 is used to respond to the gas concentration control command and output an analog electrical signal corresponding to the gas concentration in the gas concentration command. A physical display screen 203 is used to display the gas concentration based on the analog electrical signal.

[0026] It should be noted that the physical hardware module 200 supports simulation of multiple gas types, and the gas concentration control command includes a gas type identifier. The gas sensor simulation unit 202 selects the corresponding simulation output mode according to the gas type identifier.

[0027] In the embodiments disclosed herein, such as Figure 2 As shown, the physical hardware module 200 further includes: The attitude sensor unit 204 is used to collect the spatial pose data of the physical hardware module in real space. The first communication unit 201 is further configured to send the spatial pose data to the virtual reality interaction module 100; The virtual reality interaction module 100 is also used to control the position and posture of the virtual gas detector model in the training scenario based on the spatial pose data.

[0028] Furthermore, such as Figure 2 As shown, the physical hardware module also includes: The physical alarm unit 205 is used to trigger an audible alarm and / or a visual alarm when the specified gas concentration exceeds a preset alarm threshold.

[0029] In the embodiments disclosed herein, such as Figure 3 As shown, the gas sensor simulation unit 202 includes: Sensor analog circuit 2021, including controllable analog circuit; The main control unit 2022 is used to adjust the output of the sensor simulation circuit according to the gas concentration control command to simulate the response characteristics of a real gas sensor.

[0030] It should be noted that, as Figure 4 As shown, the physical hardware module 200 is designed to be a physical device that is completely identical to a real mine gas detector in appearance, size, weight, and layout of operating components. However, its internal circuitry has been specially designed to adapt to VR training and mainly includes the following units: 1. Gas Sensor Simulation Unit 202: As a signal response unit, its core function is not to perform high-precision quantitative analysis of ambient gases, but rather to act as a controllable signal response unit. In this embodiment, a low-power electrochemical sensor or a metal-oxide-semiconductor sensor can be used. The key to this unit lies in its connection method with the main control unit 2022, enabling the main control module to control the sensor circuit to output a specific analog signal corresponding to the virtual concentration value based on the instructions transmitted from VR, either through the built-in digital-to-analog converter (DAC) or by directly controlling the load resistor.

[0031] 2. Main Control Unit 2022: This serves as the core processor of the physical hardware. Its main functions are as follows: (1) Data acquisition and processing: The analog signal output by the gas sensor simulation unit 202 is acquired through the analog-to-digital converter (ADC) pin; at the same time, the raw data of the attitude sensor unit 204 is read and the Kalman filter fusion algorithm is run to process the attitude sensor data and calculate the precise three-dimensional coordinates (X, Y, Z) and three-axis attitude angles (roll, pitch, yaw) of the physical hardware in real space.

[0032] (2) Encapsulate data: Encapsulate the processed concentration data, pose data and operation events of physical button 206 into data packets according to a predefined communication protocol.

[0033] (3) Command parsing: Receive and parse commands from VR. When the command contains the target gas type and concentration value, the main control unit 2022 controls the circuit of the gas sensor simulation unit 202 to generate an analog signal that matches the target concentration value, and then reads the signal to drive the physical display screen 203 to display.

[0034] 3. Attitude sensor unit 204: It adopts an integrated microelectromechanical system (MEMS) sensor chip, which typically includes a three-axis gyroscope, a three-axis accelerometer and a three-axis magnetometer, to achieve accurate pose tracking of physical hardware with six degrees of freedom (6-DoF) and provide data for the synchronization of digital twin models in virtual environments.

[0035] 4. First Communication Unit 201: Used to realize bidirectional, low-latency wireless communication between physical hardware and the virtual reality system, employing a low-power Bluetooth or Wi-Fi module. This module is responsible for uploading the data packets encapsulated by the main control module to the VR system and receiving control commands from the VR system.

[0036] 5. Physical Display Screen 203 and Physical Buttons 206: The physical display screen 203 uses a low-power light-emitting diode (OLED) screen to realistically display information such as gas type, concentration value, and battery level. The physical buttons 206 are physical buttons that provide realistic tactile feedback and operation. Their operation events are recorded and uploaded by the main control module.

[0037] 6. Power supply unit 207: It adopts a rechargeable lithium polymer battery and designs an efficient power management scheme for each unit circuit to ensure the endurance of long-term exercises.

[0038] In the embodiments disclosed herein, such as Figure 5 As shown, the virtual reality interaction module 100 includes: Gas diffusion field model building unit 101 is used to build a gas diffusion field model in the exercise scenario based on physical laws; The theoretical gas concentration value is calculated and updated in real time based on the position of the virtual gas detector model in the gas diffusion field model.

[0039] Furthermore, such as Figure 5 As shown, the virtual reality interaction module 100 further includes: The virtual feedback unit 102 is used to synchronously display the theoretical gas concentration value on the virtual display interface of the virtual gas detector model, and / or trigger a virtual sound and light alarm in the exercise scenario.

[0040] It should be noted that the virtual reality interaction module 100 exists in software form, is developed based on a game engine (such as Unity3D or Unreal Engine), and is deployed in VR all-in-one machines, VR headsets connected to PCs, and backend management servers.

[0041] 1. Virtual Gas Detector Digital Twin Model: A high-precision 3D model that perfectly matches the appearance of the physical hardware module is created using 3D modeling software and imported into the game engine. This model not only has a realistic appearance, but all its interactive components (such as buttons and switches) and display interface are set as state machines that can be controlled through engine scripting.

[0042] 2. Virtual-Real Synchronization Engine: Scripts are written in the game engine to continuously receive pose data packets uploaded by the physical hardware through the first communication unit 201. Using this data, the position and rotation attributes of the virtual gas detector model in the 3D virtual scene are driven in real time, achieving high-precision synchronization of virtual and real spatial motion.

[0043] 3. Dynamic Virtual Gas Field and Logic Mapping System: The core logic layer for achieving immersive training.

[0044] The system generates a three-dimensional gas diffusion field based on physical laws in a virtual mine tunnel scenario, using fluid dynamics simulation software or programmed within the engine. Each virtual leak source has its type (e.g., CH4, CO), intensity, location, and diffusion parameters.

[0045] Then, the system detects the intersection of the collider in the virtual gas detector model and the virtual gas field in real time. By querying the gas concentration value at this intersection location, two key actions are performed: (1) Virtual feedback: Display the concentration value on the screen of the virtual model, and trigger the sound and light alarm effects in the virtual environment (such as screen flashing, alarm sound) according to the preset alarm threshold, and even visualize and render a faint gas cloud effect.

[0046] (2) Entity command downlink: The calculated virtual concentration value and the corresponding gas type command are sent back to the main control unit 2022 of the entity hardware module in real time through the downlink communication link.

[0047] In the embodiments disclosed herein, such as Figure 6 As shown, the system also includes: Evaluation module 300 is used to collect and analyze the operation data of the physical hardware module, including physical button operation events; The evaluation module 300 is also used to collect and analyze the deviation between the concentration value displayed by the physical hardware module and the theoretical gas concentration value; The evaluation module 300 is also used to collect and analyze operation response time; The evaluation module 300 is also used to generate a quantitative evaluation report on the operator based on the analysis results.

[0048] It should be noted that the evaluation module 300 specifically includes: (1) Scene Editor: Allows coaches to flexibly set leakage source parameters (location, type, intensity), environmental parameters (wind speed), etc. in the background to generate diverse exercise scripts.

[0049] (2) Data logger: Records a complete operation log with timestamps throughout the process, including but not limited to: time, virtual coordinates, physical instrument display readings, key operation sequence, and alarm status.

[0050] (3) Intelligent evaluator: Based on a pre-set rule base, the operation log is automatically analyzed to generate a quantitative evaluation report. The evaluation dimensions include at least: response time (the time from the virtual concentration exceeding the limit alarm to the trainee pressing the physical "confirm" button), operation standardization (whether the standard procedures such as power-on self-test, zero-point calibration, and gas path check are complete and in the correct order), path efficiency (the comparison between the path taken when searching for the virtual leak source and the optimal path calculated by the system), and judgment accuracy (the degree of agreement between the physical instrument readings and the theoretical values ​​of the virtual environment at different virtual measuring points).

[0051] It should be noted that this embodiment also proposes a gas detector for virtual reality (VR) training, which consists of a physical hardware module and a virtual interaction module. The physical hardware module has built-in sensors, a main control unit, and a communication unit. It can not only upload its own pose data to the VR system, but also receive virtual gas concentration commands issued by the VR system, drive the internal circuit to simulate the corresponding signal, and display the concentration value on the real physical screen, triggering a physical sound and light alarm, thereby realizing a closed-loop operation feedback of virtual and real linkage.

[0052] In summary, the gas detection system proposed in this embodiment for virtual reality technology drills solves the problems of lack of realism and disconnect between human and machine feedback in traditional VR training by deeply integrating virtual and real elements and providing two-way closed-loop feedback. It can effectively improve the immersion and training effect of emergency drills and support quantitative evaluation of the practical process.

[0053] Example 2 Figure 7 This is a flowchart of a gas detection method for virtual reality technology simulation according to an embodiment of this application, as shown below. Figure 7 As shown, the method includes: Step 1: Generate a training scenario containing a virtual gas detector model in the virtual reality interaction module; Step 2: Obtain the spatial pose data of the physical hardware module in the real space, and use this data to drive the virtual gas detector model to be updated synchronously in the exercise scenario; Step 3: Based on the virtual position of the exercise scenario and the virtual gas detector model, determine the current theoretical gas concentration value; Step 4: Send the theoretical gas concentration value to the physical hardware module; Step 5: Control the physical hardware module to respond to the theoretical gas concentration value, drive its gas sensor simulation unit to output the corresponding analog electrical signal, and display the corresponding concentration value on its physical display screen.

[0054] In this embodiment of the disclosure, the method further includes: When the theoretical gas concentration value exceeds the preset alarm threshold, the physical hardware module is controlled to trigger a physical alarm, and a virtual sound and light alarm is triggered synchronously in the exercise scenario. In this embodiment of the disclosure, the method further includes: Record the operation data of the physical hardware module and the event sequence in the exercise scenario; The operation process is quantitatively analyzed based on predefined evaluation rules, and an evaluation report is generated.

[0055] Taking a simulated gas accumulation scenario in a virtual mine as an example, this further illustrates how the system achieves closed-loop training: 1. Scenario Start-up: Trainees wear VR headsets and hold the gas detector described in this invention. The instructor in the background starts a gas anomaly drill at the tunneling face.

[0056] 2. Virtual-Real Synchronization: The trainee moves and operates the gas detector in the real space, and its real-time pose data is uploaded through the first communication unit 201, driving the digital twin model in the virtual scene to move synchronously.

[0057] 3. Virtual disaster triggering and command issuance: When the trainee approaches the virtual gas accumulation area through the virtual model, the VR system calculates the methane concentration at the current location as 1.5% based on the gas field model. The system immediately sends a command to the gas detector via Bluetooth: CH4 concentration is 1.50%.

[0058] 4. Gas Detector Simulated Response: After receiving the command, the main control unit 2022 of the gas detector controls the methane sensor circuit to output an electrical signal corresponding to a concentration of 1.5%. Subsequently, the main control module reads this signal and clearly displays "CH4 1.50%" on the physical display screen 203. At the same time, because the concentration exceeds the preset alarm lower limit of 1.0%, the gas detector's buzzer begins to sound and the alarm light flashes.

[0059] 5. Forming an immersive closed-loop experience: Trainees receive consistent feedback from multiple senses. First, the virtual instrument screen inside the VR headset displays "CH4 1.50%", and they see the virtual alarm light flashing and the faint gas cloud effect rendered in the surrounding air. At the same time, the screen of the real instrument in their hands displays the same "CH4 1.50%", they hear the real alarm sound, and their fingers feel the real buttons and the tactile sensation of the device.

[0060] 6. Decision-making and Operation: Based on this feedback, trainees perform subsequent operations according to the operating procedures, such as recording readings, pressing the physical report button, and selecting call reporting in VR. All operations are recorded by the system through physical button 206 and VR interaction.

[0061] 7. Evaluation and Review: After the exercise, the system automatically generates an evaluation report. Coaches can combine the operation video and quantitative data to provide precise feedback on the trainees' skills.

[0062] Based on the above embodiment, the physical hardware module can be configured with multiple gas sensors (such as CH4, CO, O2, H2S). The main control unit 2022 selects the corresponding gas simulation circuit for driving according to the instructions issued by the VR system, thereby realizing the function of simulating multiple gas detectors with one machine, which greatly enhances the flexibility of training and the utilization rate of equipment.

[0063] In summary, the gas detection method proposed in this embodiment for virtual reality technology drills solves the problems of lack of realism and disconnect between human and machine feedback in traditional VR training by deeply integrating virtual and real elements and providing two-way closed-loop feedback. It can effectively improve the immersion and training effect of emergency drills and support the quantitative evaluation of the practical process.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0066] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A gas detection system for virtual reality technology demonstrations, characterized in that, The system includes: a virtual reality interaction module and a physical hardware module; The virtual reality interaction module is used to generate a training scenario that includes a virtual gas detector model. The virtual reality interaction module is also used to determine the theoretical gas concentration value of the virtual location of the virtual gas detector model based on the exercise scenario, and send the theoretical gas concentration value as the gas concentration control command to the physical hardware module. The physical hardware module is configured to have an operable physical structure consistent with that of a real gas detector. The physical hardware module includes: The first communication unit is used to receive gas concentration control commands from the virtual reality interaction module; A gas sensor simulation unit is used to respond to the gas concentration control command by outputting an analog electrical signal corresponding to the gas concentration in the gas concentration command; A physical display screen is used to display the gas concentration based on the analog electrical signal.

2. The gas detection system as described in claim 1, characterized in that, The physical hardware module also includes: An attitude sensor unit is used to collect the spatial pose data of the physical hardware module in real space; The first communication unit is further configured to send the spatial pose data to the virtual reality interaction module; The virtual reality interaction module is also used to control the position and posture of the virtual gas detector model in the training scenario based on the spatial pose data.

3. The gas detection system as described in claim 2, characterized in that, The physical hardware module also includes: A physical alarm unit is used to trigger an audible alarm and / or a visual alarm when the specified gas concentration exceeds a preset alarm threshold.

4. The gas detection system as described in claim 3, characterized in that, The gas sensor simulation unit includes: Sensor analog circuit, including controllable analog circuit; The main control unit is used to adjust the output of the sensor simulation circuit according to the gas concentration control command to simulate the response characteristics of a real gas sensor.

5. The gas detection system as described in claim 4, characterized in that, The virtual reality interaction module includes: The gas diffusion field model building unit is used to construct a gas diffusion field model in the exercise scenario based on physical laws. The theoretical gas concentration value is calculated and updated in real time based on the position of the virtual gas detector model in the gas diffusion field model.

6. The gas detection system as described in claim 5, characterized in that, The virtual reality interaction module includes: The virtual feedback unit is used to synchronously display the theoretical gas concentration value on the virtual display interface of the virtual gas detector model, and / or trigger a virtual sound and light alarm in the exercise scenario.

7. The gas detection system as described in claim 6, characterized in that, The system also includes: The evaluation module is used to collect and analyze the operation data of the physical hardware module, including physical button operation events; The evaluation module is also used to collect and analyze the deviation between the concentration value displayed by the physical hardware module and the theoretical gas concentration value; The evaluation module is also used to collect and analyze operation response time; The assessment module is also used to generate a quantitative assessment report for the operator based on the analysis results.

8. The gas detection system as described in claim 7, characterized in that, The physical hardware module supports simulation of multiple gas types, and the gas concentration control command includes a gas type identifier. The gas sensor simulation unit selects the corresponding simulation output mode based on the gas type identifier.

9. A gas detection method for virtual reality technology training based on the gas detection system for virtual reality technology training according to any one of claims 1-8, characterized in that, The method includes: Generate a training scenario containing a virtual gas detector model in the virtual reality interaction module; Acquire the spatial pose data of the physical hardware module in the real space, and use this data to drive the virtual gas detector model to be updated synchronously in the exercise scenario; Based on the exercise scenario and the virtual position of the virtual gas detector model, the current theoretical gas concentration value is determined; The theoretical gas concentration value is sent to the physical hardware module; The physical hardware module is controlled to respond to the theoretical gas concentration value, drive its gas sensor simulation unit to output the corresponding analog electrical signal, and display the corresponding concentration value on its physical display screen.

10. The method as described in claim 9, characterized in that, The method further includes: When the theoretical gas concentration value exceeds the preset alarm threshold, the physical hardware module is controlled to trigger a physical alarm, and a virtual sound and light alarm is triggered synchronously in the exercise scenario. The method further includes: Record the operation data of the physical hardware module and the event sequence in the exercise scenario; The operation process is quantitatively analyzed based on predefined evaluation rules, and an evaluation report is generated.

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