JP7598223B2 - Fire training device, fire training system, fire training method, and fire training program - Google Patents

Description

Article 30, paragraph 2 of the Patent Act applies. January 8, 2020 JFE Project One Corporation (formerly Mitsui E&S Plant Engineering Co., Ltd.) released the thick smoke and hot air real fire training device VR on its website. http://www. jfe-project-one. co. jp/ http://www. jfe-project-one. co. jp/business/vr. html

The present invention relates to a fire training device, a fire training system, a fire training method, and a fire training program for conducting fire training for trainees, particularly firefighting personnel.

2. Description of the Related Art Fire training devices for training persons such as firefighters have been available for some time.
For example, Patent Document 1, which is a conventional fire training device, describes a thick smoke and hot air real fire training device that allows users to experience thick smoke and hot air with a sense of realism similar to that of a fire scene. The fire training device of Patent Document 1 can contribute to improving fire extinguishing techniques and disaster prevention techniques while also taking into consideration safety and versatility.

JP 2011-34024 A

However, the technology in Patent Document 1 creates extremely high temperatures by actually burning wood inside the device, making it difficult for beginners to train right away.

The present invention was made in light of these circumstances, and aims to solve the above-mentioned problems.

The fire training apparatus of the present invention is a fire training apparatus for conducting fire training, and is equipped with a situation setting means for setting one of the following situations depending on the progress of the fire training: the formation of a neutral zone, the occurrence of a rollover, and the collapse of the neutral zone due to water spraying, and a drawing means for drawing the situation set by the situation setting means as an image in a virtual space, and is connected to a head-mounted display that displays the image of the virtual space drawn by the drawing means and is capable of acquiring the position and orientation of real space, and the drawing means aligns the position of the viewpoint in the image of the virtual space to the position and orientation of the real space acquired by the head-mounted display, and represents the location of the rollover flames by a flow of glowing particles in a flame color or indicates them by the movement of symbols so that the location of the rollover flames is easily understandable to the training subject.
The fire training apparatus of the present invention is characterized in that the drawing means draws smoke particles produced by hot combustion gases as they move in a trajectory corresponding to the flames while blurring them and causing them to stagnate, and draws the flow of relatively cold air from the outside, separating the smoke and air, and forming the neutral zone.
The fire training apparatus of the present invention is characterized in that, when depicting the water being sprayed, the drawing means moves the water particles parabolically while blurring them, performs collision processing with the smoke particles, and disturbs the trajectory of the smoke particles so as to eliminate the neutral zone.
The fire training device of the present invention is characterized in that a sequence is set that changes each of the above conditions in real time as the fire training progresses, and the conditions included in the sequence are set according to the amount and quality of fuel such as wood to be burned, the airtightness of the building, the conditions inside the building, and the outside temperature and humidity.
The fire training apparatus of the present invention is characterized by further comprising a warning means for detecting that the height of the position in the real space is higher than a height according to the situation and warning that the position is in a dangerous position.
The fire training apparatus of the present invention is characterized in that the drawing means displays subtitles of a narration of the fire training.
The fire training system of the present invention is a fire training system including a fire training device for conducting fire training and a head-mounted display, wherein the fire training device is equipped with a situation setting means for setting one of the following situations depending on the progress of the fire training: the formation of a neutral zone, the occurrence of a rollover, and the collapse of the neutral zone due to water spraying, and a drawing means for drawing the situation set by the situation setting means as an image in a virtual space, wherein the head-mounted display displays the image of the virtual space drawn by the drawing means and is capable of acquiring the position and orientation of real space, and the drawing means aligns the position of the viewpoint in the image of the virtual space to the position and orientation of the real space acquired by the head-mounted display, and represents the location of the rollover flame with a flow of glowing particles in a flame color or indicates it with the movement of symbols so that it is easy for the training subject to understand.
The fire training method of the present invention is a fire training method executed by a fire training device for conducting fire training, and is characterized in that, depending on the progress of the fire training, one of the following situations is set: the formation of a neutral zone, the occurrence of a rollover, and the collapse of the neutral zone due to water spraying, the set situation is depicted as an image in a virtual space, the position of the viewpoint in the image in the virtual space is aligned with the position and orientation of the real space obtained by a head-mounted display, and the location of the rollover flame is represented by a flow of glowing flame-colored particles or indicated by the movement of symbols so that the location of the flame is easily visible to the training subject.
The fire training program of the present invention is a fire training program executed by a fire training device for conducting fire training, and is characterized in that it causes a computer of the fire training device to execute a function of setting any one of the following situations as the fire training progresses: the formation of a neutral zone, the occurrence of a rollover, and the collapse of the neutral zone due to water spraying, depicting the set situation as an image in a virtual space, and representing the location of the rollover flame with a flow of particles that glow in a flame color so that it is easy for the training subject to understand, or showing it with the movement of symbols.

According to the present invention, by setting one of the following situations according to the progress of the fire training: formation of a neutral zone, occurrence of a rollover, or collapse of the neutral zone due to water discharge, and depicting the set situation as an image in a virtual space, it is possible to provide a fire training device as an educational tool that allows training to be immediately given to training subjects such as firefighting personnel, even if they are beginners.

1 is a system configuration diagram of a fire training system according to an embodiment of the present invention. FIG. 2 is a block diagram showing a functional configuration of the fire training system shown in FIG. 1 . 1 is a flowchart of a fire training process according to an embodiment of the present invention. 4 is a screen example of the fire training process shown in FIG. 3. 4 is a screen example of the fire training process shown in FIG. 3.

<Embodiment>
[System configuration of training system X]
First, a system configuration of a training system X according to an embodiment of the present invention will be described with reference to Fig. 1. The training system X according to this embodiment is configured by connecting an HMD 2 and a controller 3 to a fire training apparatus 1.

The fire training apparatus 1 is an apparatus for conducting fire training for training subjects such as firefighting personnel. In this embodiment, the fire training apparatus 1 is an information processing apparatus including a control calculation means and a recording medium. The fire training apparatus 1 may be, for example, a portable or stationary personal computer (PC), a workstation, or a portable terminal such as a smartphone or a tablet terminal.
In this embodiment, the fire training apparatus 1 may be placed in a room of the same size as the apparatus described in Patent Document 1, or in a management room thereof, and connected to the HMD 2 .

HMD2 is a head mounted display for displaying "XR" such as VR (Virtual Reality), AR (Augmented Reality), MR (Mixed Reality), and SR (Substitutional Reality), or a wearable AR device that is attached to glasses or the like and projects onto the lenses or retina (hereinafter simply referred to as "HMD").

The HMD 2 includes a display unit, a voice output unit, and a position acquisition unit.
Among these, the display means is a liquid crystal display, an organic EL or OLED (organic light-emitting diode) display, a micro LED array, a MEMS laser projector, other retinal projection displays, etc. In this embodiment, an example in which two display means, one on the left and one on the right, are provided so that stereoscopic viewing is possible, will be described.
The audio output means is a headphone, an earphone, etc., and a D/A (Digital to Analog) converter, etc. The audio output means can output the audio generated by the fire training apparatus 1 so that the reviewer can hear it.
The position acquisition means is a three-dimensional acceleration sensor, a gyro, a camera, a radar, a lidar (Light Detection and Ranging, LIDAR), an infrared sensor, a GPS (Global Positioning System), other room position specifying sensors, etc. By using the position acquisition means, the HMD 2 can acquire information such as the position, orientation, speed, acceleration, etc., of the reviewer wearing the HMD 2 in a three-dimensional space.

The controller 3 is associated with the HMD 2 and is capable of detecting the position, orientation, speed, acceleration, button presses, etc. in three-dimensional space. For this reason, the controller 3 includes multiple buttons and pads. Furthermore, like the HMD 2, the controller 3 includes various position acquisition means.

In addition, the fire training device 1 can be connected to external networks such as a LAN (Local Area Network), a WAN (Wide Area Network), a short-distance network, a mobile phone network, etc.

(Control configuration of fire training apparatus 1)
Next, we will explain the control configuration of the fire training apparatus 1. The fire training apparatus 1 includes a control unit 10, an image processing unit 11, a storage unit 12, an input unit 13, a display unit 14, and a connection unit 15. Each unit may be connected by a common bus, or each unit may be further connected by a dedicated bus.

The control unit 10 is a control and calculation unit that controls the entire fire training apparatus 1. The control unit 10 may be, for example, a general CPU (Central Processing Unit) or MPU (Micro Processing Unit), etc.

The image processing unit 11 is a control and calculation unit that executes image processing and the like. The image processing unit 11 may include, for example, a GPU (Graphics Processing Unit) or a DSP (Digital Signal Processor). The image processing unit 11 may also be capable of high-speed rendering of various three-dimensional data such as Direct X (registered trademark) and Open GL standards, shader calculations, and the like. The image processing unit 11 may also function as an accelerator that supports calculations such as the ray tracing method and the radiosity method. The image processing unit 11 may also have a support function for physical calculations such as structure and intensity calculation. The image processing unit 11 may also have a support function for polygon division, normal calculation, and the like. The image processing unit 11 is capable of executing, for example, a programmable shader.

The storage unit 12 is a non-transient recording medium in which various data are stored. The storage unit 12 is, for example, various types of RAM (Random Access Memory), ROM (Read Only Memory), eMMC (embedded Multi Media Card), SSD (Solid State Drive), HDD (Hard Disk Drive), optical recording medium, etc. Here, a recording medium that is accessed at high speed, such as the RAM of the storage unit 12, may be directly connected to the control unit 10. The storage unit 12 stores an OS (Operating System) and various application software, etc. (hereinafter simply referred to as "apps"). In this embodiment, a fire training program, which is an example of an app, is also stored.

The input unit 13 is a device that allows the user of the fire training apparatus 1 to give various instructions. The input unit 13 is, for example, a keyboard, a mouse, a touchpad, a touch panel, a digitizer, a 3D mouse, a stereo camera, etc.

The display unit 14 is a device that displays various data of the fire training apparatus 1. The display unit 14 may be, for example, various displays such as a liquid crystal display, an organic EL or OLED display, or a micro LED display.
The input unit 13 and the display unit 14 may be configured as an integrated touch panel, digitizer, or the like.

The connection unit 15 is a connection interface for connecting to the HMD 2, such as a USB (Universal Serial Bus), Thunderbolt (registered trademark), wireless LAN, Bluetooth (registered trademark), or other proprietary interface. In addition, the connection unit 15 may include an interface for connecting to an external network.

[Control configuration of training system X]
Next, the control configuration of the training system X of this embodiment will be described with reference to FIG.
The control unit 10 of the fire training apparatus 1 of this embodiment includes a situation setting means 100, a drawing means 110, a warning means 120, and a notification means 130.
The storage unit 12 stores situation data 200 and video setting data 210 .

The situation setting means 100 sets one of the following situations according to the progress of the fire training: formation of a neutral zone, occurrence of rollover, and collapse of the neutral zone due to water spraying. Here, the neutral zone is characterized by the fact that in the early stages of a fire, a high-temperature layer due to smoke generated by combustion is formed in the upper part of the fire chamber, and an air layer is formed in the lower part of the fire chamber, and the neutral zone is divided into two layers. In this embodiment, the neutral zone is the boundary between the inflowing air and the outflowing high-temperature layer, and is a horizontal plane at a height where the pressure difference between the two spaces is zero. On the other hand, in this embodiment, rollover refers to the phenomenon in which the tip of the fire or flame blows out in front of the material that is actually burning (for example, see <URL="http://www.g-web.com/JVFA/shouuka/index.html">). Collapse of the neutral zone refers to the phenomenon in which the formed neutral zone collapses due to spraying water spraying, etc.

The drawing means 110 draws the situation set by the situation setting means 100 as an image of a virtual space. This drawn image is displayed on the HMD 2, which is a head mounted display. The drawing means 110 causes this virtual space to be displayed on the display unit 14 and/or the display means of the HMD 2.
At this time, the rendering means 110 can align the position of the viewpoint in the image of the virtual space with the position and orientation of the real space acquired by the HMD 2. In addition, the rendering means 110 may display the virtual space on the HMD 2 so that it can be viewed at actual scale (size).

The warning means 120 detects that the height of the position in real space is higher than the height appropriate for the situation, and warns that the position is dangerous. Specifically, for example, the warning means 120 issues a warning when the head of the person wearing the HMD 2 (trainee) is located in a part of the smoke above the neutral zone.

The notification means 130 calculates and notifies the temperature change over time during the fire drill. For example, the notification means 130 draws the time and temperature in real time (real time) on a message box in the virtual space.

Additionally, in this embodiment, the HMD 2 displays an image of the virtual space drawn by the drawing means 110 on the display means. Furthermore, the HMD 2 can obtain information on the position, orientation, speed, acceleration, etc. (hereinafter referred to as "position, orientation, etc.") in the real space (three-dimensional space) by the position obtaining means. The HMD 2 may be capable of obtaining, for example, the position, orientation, etc. of 6DoF (six degrees of freedom).
The controller 3 can also acquire information about the button press, such as the position and orientation in real space (three-dimensional space). That is, by detecting the press of a button on the controller 3, the reviewer's instruction can be acquired.

The situation data 200 is data indicating situations such as the formation of a neutral zone, the occurrence of a rollover, and the collapse of the neutral zone due to water discharge. The situation data 200 may be set to a sequence that changes to each situation in real time as the fire training progresses. In this case, it is possible to set multiple sequences or change the stomach situation included in the sequence depending on the amount and quality of fuel such as wood to be burned, the airtightness of the building, other conditions inside the building, the outside temperature and humidity, etc. In addition, the situation data 200 may include setting data corresponding to each situation set by the training manager. Furthermore, the situation data 200 may also include text data, audio data, etc. of narration in each situation.

The image setting data 210 includes original data of the image drawn by the drawing means 110. In this embodiment, the original data of the image setting data 210 may include, for example, CG (Computer Graphics) data created based on the live-action image of the thick smoke and hot air real fire training device described in Patent Document 1. Specifically, for example, the image setting data 210 may include CG data that can be panoramic or stereoscopically played back on the HMD 2, created based on live-action image data that captures the actual burning situation in the thick smoke and hot air real fire training device from multiple viewpoints. Furthermore, the original data may include, for example, CG data corresponding to each situation set by the situation setting means 100. In addition, the original data may reproduce dirt, distortion, dents, etc. caused by an actual fire or fire training.

In addition, the image setting data 210 may include 3D data including three-dimensional coordinates and surface coordinates of polygons (polygons) and particles (points). The 3D data may include, for example, polygon data inside the fire training device in the virtual space, material (texture) data of each polygon, arrangement data, strength and flammability data, scale (size) data, and other data. In addition, the 3D data includes movement (trajectory) data of smoke particles, movement data of flame particles (trajectory), neutral zone setting data of neutral zones, disappearance setting data for depicting the disappearance of neutral zones by water discharge, and the like. That is, the image setting data 210 includes data related to the virtual space, such as multiple image data, surface data, point data, and movement instruction data.
Furthermore, the video setting data 210 may include image data and video data after rendering.

Here, the control unit 10 of the fire training apparatus 1 executes a control program stored in the storage unit 12 to function as a situation setting means 100, a drawing means 110, a warning means 120, and a notification means 130. This control program includes various OSs, middleware for three-dimensional graphic display such as Unity (registered trademark), and an application such as the fire training program of this embodiment.
Moreover, each part of the above-mentioned fire training apparatus 1 serves as a hardware resource for executing the fire training method of the present invention.
Note that a part or any combination of the above-described functional configurations may be configured in the form of hardware or circuits using an IC, programmable logic, FPGA (Field-Programmable Gate Array), or the like.

[Fire training processing by training system X]
Next, the fire training process by the training system X according to this embodiment will be described with reference to FIGS.
In the fire training process of this embodiment, one of the following situations is set according to the progress of the fire training: formation of a neutral zone, occurrence of a rollover, and collapse of the neutral zone due to water discharge. The set situation is then rendered as an image in a virtual space. In the fire training process of this embodiment, an example will be described in which a space that can be rendered by three-dimensional CG (Computer Graphics) to imitate a real three-dimensional space is used as the virtual space. The virtual space of this embodiment has vertical (depth), horizontal, and height directions set.

In the fire training process of this embodiment, the control unit 10 of the fire training apparatus 1 mainly executes a fire training program (application) stored in the storage unit 12 in cooperation with each unit, using hardware resources.
The details of the fire training process will be described below step by step with reference to the flowchart of FIG.

(Step S101)
First, the situation setting means 100 performs a situation setting process.
The situation setting means 100 displays a GUI (Graphical User Interface) menu on the display unit 14, and acquires instructions from the trainee or training manager from the controller 3 or the input unit 13. The situation setting means 100 sets the sequence of the fire training, etc., according to the acquired instructions. At this time, the situation setting means 100 can set any one of the following situations to occur according to the progress of the fire training: formation of a neutral zone, occurrence of a rollover, and collapse of the neutral zone due to water discharge. In addition, the situation setting means 100 can also set to display subtitles of the narration of the fire training according to the acquired instructions.

The example screen 300 in FIG. 4(a) shows an example of a screen displayed immediately after training has started, in which the interior of a fire training device is displayed in a virtual space on the display means of the HMD 2.

(Step S102)
Next, the situation setting means 100 performs an HMD information acquisition process.
The situation setting means 100 acquires data such as the position and orientation in the real space from the HMD 2. In this embodiment, the trainee can freely move within the room in which the fire training apparatus 1 is placed. Data such as the position and orientation corresponding to the movement of the trainee can be acquired from the HMD 2.
Furthermore, the situation setting means 100 is also capable of acquiring information on pressing of buttons on the controller 3. These buttons include a button for instructing spraying water, a button for moving within the virtual space, and the like.

(Step S103)
Next, the warning means 120 determines whether a warning is necessary.
The warning means 120 judges whether the height of the position of the head of the training subject in the real space or the corresponding height in the virtual space (hereinafter simply referred to as "head height") is higher than the height according to the situation, based on the data such as the position and orientation acquired from the HMD 2. Specifically, when the head height is higher than the height at which hot smoke exists in the virtual space as the height according to the situation, the warning means 120 detects this and judges it as Yes. More specifically, when an intermediate zone is formed, the warning means 120 judges it as Yes when the head height is higher than this. Alternatively, the warning means 120 can also judge it as Yes when the intermediate zone has collapsed and the head height is within the hot smoke. The warning means 120 judges it as No in other cases.
If the answer is Yes, the warning means 120 advances the process to step S104.
If the answer is No, the warning means 120 advances the process to step S105.

(Step S104)
If a warning is necessary, the warning means 120 performs a warning process.
The warning means 120 calls attention and warns of a dangerous posture.
The warning means 120 can, for example, display a warning dialogue box such as "Your head is too high" on the display means of the HMD 2 and output a buzzer sound or the like from the audio output means.

(Step S105)
Here, the notification means 130 performs notification processing.
The notification unit 130 calculates the temperature change over time from the start of the fire drill. Then, the notification unit 130 displays the temperature change inside the device over time in the form of subtitles on the display unit of the HMD 2, for example.
The notification means 130 can also output a narration about the relationship between time and temperature from the audio output means, allowing the trainee to learn about the relationship between time and temperature in the event of a fire.

The example screen 301 in FIG. 4(b) shows an example in which a dialog box D showing changes in time and temperature is displayed on the display means of the HMD 2. This dialog box D displays the time and temperature since the start of training.

(Step S106)
Next, the drawing means 110 performs drawing processing.
The rendering means 110 renders a situation corresponding to the set sequence as an image of a virtual space. At this time, the rendering means 110 can match the position of the viewpoint in the image of the virtual space to the position, orientation, etc. of the real space acquired by the HMD 2. The rendering means 110 may also move the position and orientation of the viewpoint in response to an instruction from the controller 3 or the input unit 13. Furthermore, the rendering means 110 may be capable of causing the image processing unit 11 to quickly execute the rendering of these images of the virtual space.
In addition, the rendering means 110 can display the narration of the fire drill as subtitles using a billboard-rendered dialogue box or the like.
As a result, the display means of the HMD 2 displays an image of the virtual space drawn by the drawing means 110 .

The display of this drawing process will be specifically described with reference to FIG.
A screen example 302 in FIG. 4A shows an example of an image reproducing a scene in which a neutral zone is formed. The drawing means 110 can draw a flame by moving particles that glow in a flame color while blurring them. In addition, the drawing means 110 can draw particles of smoke from hot combustion gas by moving them in a trajectory corresponding to the flame while blurring them, so that they stay there. In this way, the drawing means 110 can draw a state in which relatively cold air flows in from the outside, smoke is separated from air, and a neutral zone is formed. In this screen example, the time from the start of training is also displayed.

Screen example 303 in FIG. 4(b) shows an example of an image recreating a scene in which a rollover occurs. This rollover is a phenomenon in which combustion gases mix with oxygen and accumulate on the ceiling in the early stages of a fire, causing combustion to begin on the ceiling. The rendering means 110 is capable of expressing the rollover flames as a flow of glowing flame-colored particles. In this screen example, the location of the rollover flames is shown by moving "<<<" symbols so that the training subjects can easily understand.

Screen example 304 in FIG. 4(c) shows an example of an image in which the intermediate zone has collapsed due to the spraying of water. The drawing means 110 draws the water being sprayed in response to instructions from the training participant, such as pressing a button from the controller 3 or the input unit 13. This drawing can be expressed by blurring the water particles and moving them parabolically. At this time, the drawing means 110 performs collision processing with the smoke particles, which disrupts the trajectory of the smoke particles and makes it possible to express the disappearance of the intermediate zone. On the other hand, it is possible to express the extinguishing of the fire by making the flames disappear using a similar collision processing.

In accordance with the drawing by the drawing means 110, the situation setting means 100 can also provide a sense of realism by outputting a recording of the sound during a fire training using the thick smoke and hot air real fire training device described in Patent Document 1 from the sound output means of the HMD 2. Furthermore, the situation setting means 100 can also provide a narration from the sound output means to explain the phenomenon reproduced by the CG, thereby enhancing the educational effect.
In addition, the rendering means 110 can also perform simulations of buildings collapsing, floors collapsing, etc. In this case, the rendering means 110 renders the rooms in the virtual space by changing the polygons.
When rendering these, the rendering unit 110 can execute various programmable shaders to adjust vertices and rendering. The rendering unit 110 can also perform polygon scale conversion, coordinate system conversion, object-by-object conversion, material and texture conversion, and the like.

Furthermore, the drawing means 110 is also capable of drawing an overhead image for display on the display unit 14. At this time, the drawing means 110 is also capable of drawing an avatar (alter ego) object of the training subject in the overhead image. In other words, the avatar object may not be drawn for the HMD 2, but may be drawn in the overhead image displayed on the display unit 14. In this overhead image, the viewpoint, line of sight, etc. can be specified from the input unit 13, etc.

(Step S107)
Next, the situation setting means 100 judges whether the fire training has ended. The situation setting means 100 judges as Yes when the set sequence of the fire training has ended. Alternatively, the situation setting means 100 judges as Yes when it detects that the training subject has instructed the end of the fire training via the controller 3 or the input unit 13. The situation setting means 100 judges as No in other cases.
If the answer is Yes, the situation setting means 100 returns the process to step S102 to continue the fire training.
If the answer is No, the situation setting means 100 ends the fire training process.
This ends the fire training process according to this embodiment.

With the above configuration, the following effects can be obtained.
Conventionally, for training subjects such as firefighters, a thick smoke and hot air real fire training device, which is a hot training facility that allows them to experience thick smoke and hot air, has been used for fire training. In such fire training devices, since the temperature becomes very high by actually burning wood inside the device, it is sometimes difficult for beginners to handle. For this reason, in the fire training device of Patent Document 1, beginners have to carry out a certain amount of tabletop exercises before carrying out actual training.

In contrast, the fire training apparatus 1 according to an embodiment of the present invention is characterized by having a situation setting means 100 that sets one of the following situations depending on the progress of the fire training: the formation of a neutral zone, the occurrence of a rollover, and the collapse of the neutral zone due to water discharge, and a drawing means 110 that draws the situation set by the situation setting means 100 as an image in a virtual space.
By configuring it in this way, it is possible to experience the characteristics of a fire, the flow of the training, dangers, etc. in advance, and even beginners can quickly achieve safe fire training. Therefore, it can be used as an educational tool that allows beginners to safely learn about the characteristics of a fire. Furthermore, by reproducing the scenes in which the neutral zone is formed, which is important in professional fire training, the scene in which a rollover occurs, and the scene in which the neutral zone collapses due to water spraying, it is possible for trainees to learn practical training content.
In other words, by recreating a thick smoke and hot air real-life fire training device in a virtual space and simulating the training, it becomes possible to perform image training before the actual training. Therefore, it can be used as an educational tool to help trainees safely use the thick smoke and hot air real-life fire training device.

A fire training system X according to an embodiment of the present invention is characterized in that the HMD 2 displays an image of a virtual space drawn by the drawing means 110 and is capable of acquiring the position and orientation of the real space, and the drawing means 110 aligns the position of the viewpoint in the image of the virtual space to the position and orientation of the real space acquired by the HMD 2.
By configuring it in this way, it is possible to move freely within the virtual space and experience firefighting training, enhancing the sense of realism. In this case, by using CG or the like of the thick smoke and hot air real fire training device described in Patent Document 1, the sense of immersion can be further enhanced. In addition, it is also possible to explain each phenomenon by narration or the like to enhance the educational effect.
In other words, based on the image setting data 210 taken inside the thick smoke and hot air real fire training device, it is possible to draw the movement of smoke and flames along their actual trajectories, faithfully reproducing an actual fire training. This makes it possible to realize safe education in a space close to the real thing while reproducing the details of the thick smoke and hot air real fire training device and pursuing realism.

The fire training apparatus 1 according to the embodiment of the present invention is characterized by further comprising a warning means 120 for detecting that the height of a position in real space is higher than a height appropriate to the situation and for warning that the position is dangerous.
With this configuration, it is possible to warn people when they raise their heads and teach them that this is a dangerous position. This can improve the effectiveness of education and reduce the risk of fire training in which real wood is burned using a thick smoke and hot air real fire training device.

The fire training apparatus 1 according to the embodiment of the present invention is characterized by further comprising a notification means 130 that calculates and notifies of a temperature change over time during the fire training.
By configuring it in this way, temperature changes inside the device over time can be conveyed, making it possible to learn about the relationship between time and temperature, which is important in fire training.

In the fire training apparatus 1 according to the embodiment of the present invention, the drawing means 110 is characterized in that it displays subtitles of the narration of the fire training.
With this configuration, it is possible to carry out fire training without audio by displaying subtitles of the narration, without outputting audio from the HMD 2. In other words, it is possible to carry out appropriate training even if the sound output from the HMD 2 is increased to enhance the sense of realism.

<Other embodiments>
In the above embodiment, the example in which the fire training apparatus 1 and the HMD 2 are separate has been described.
However, it is also possible to use an integrated device of the fire training device 1 and the HMD 2, such as Oculus Quest (registered trademark). That is, it is also possible to configure the integrated device to function as a fire training system by executing the above-mentioned fire training program. Furthermore, the integrated fire training system itself may have a built-in battery.
This makes it possible to realize fire training in a virtual space regardless of location, without the need for separate wiring, a PC, a power source, etc. as an information processing device for the fire training device 1.

In the above embodiment, an example of XR display using the HMD 2 has been described. However, a configuration may be used in which only the display unit 14 is used, without using the HMD 2. In this case, only an overhead image may be displayed, or an image from the viewpoint of an avatar may be displayed on the display unit 14. Furthermore, a configuration may be used in which the controller 3 is not used. In this case, various processes may be executed by the input unit 13.

In the above embodiment, an example has been described in which CG was created based on the interior of the thick smoke and hot air actual fire training device described in Patent Document 1.
However, CG may be created based on an image of an actual fire scene, or different CG may be created for each sequence. Alternatively, the trajectories of the flames and smoke particles may be simulated and drawn based on the actual situation of a fire scene using fluid dynamics calculations. Alternatively, a virtual space may be drawn in which a camera image is simply pasted onto a wall of the same size as the thick smoke and hot air actual fire training device, using a texture or the like, and can be viewed.
Such a configuration makes it possible to accommodate a flexible configuration.

In addition, in the above-described embodiment, an example has been described in which the formation of the neutral zone, the occurrence of rollover, and the collapse of the neutral zone due to water discharge are reproduced.
However, other fire-related phenomena, such as backdraft and flashover, may also be reproduced. Furthermore, it is possible to simulate explosions, house collapses, floor collapses, and the like, caused by fire. In these simulations, the image processing unit 11 can perform physical calculations such as structure and strength calculations. In addition, it is also possible to prepare sequences for rescuing victims, etc.

It goes without saying that the configurations and operations of the above-described embodiments are merely examples and can be modified as appropriate without departing from the spirit of the present invention.

1 Fire training device 2 HMD
3 Controller 10 Control section 11 Image processing section 12 Memory section 13 Input section 14 Display section 15 Connection section 100 Situation setting means 110 Drawing means 120 Warning means 130 Notification means 200 Situation data 210 Video setting data 300, 301, 302, 303, 304 Screen example D Dialog box X Fire training system

Claims (9)

A fire training device for conducting fire training,
a situation setting means for setting any one of the situations of formation of a neutral zone, occurrence of a rollover, and collapse of the neutral zone by water discharge according to the progress of the fire training;
a drawing means for drawing the situation set by the situation setting means as an image in a virtual space,
a head mounted display is connected to the virtual space and capable of displaying an image of the virtual space drawn by the drawing means and acquiring a position and orientation of a real space;
The drawing means includes:
aligning a position of a viewpoint in the image of the virtual space with a position and orientation of the real space acquired by the head mounted display;
A fire training device characterized in that the location of the rollover flame is represented by a flow of particles that glow in a flame color or is indicated by the movement of symbols so that the location of the rollover flame can be easily understood by the training subject. The fire training device according to claim 1, characterized in that the drawing means draws smoke particles from hot combustion gases moving in a trajectory corresponding to the flames while blurring them and causing them to stagnate, and draws the state in which relatively cold air flows in from the outside, separating the smoke and air, and forming the neutral zone. The fire training device according to claim 1, characterized in that, when depicting the water being sprayed, the drawing means moves the water particles parabolically while blurring them, performs collision processing with the smoke particles, and disturbs the trajectories of the smoke particles so as to eliminate the neutral zone. A sequence is set up to change each of the above conditions in real time as the fire training progresses,
The fire training apparatus according to claim 1, characterized in that the conditions included in the sequence are set according to the amount and quality of fuel, such as wood, to be burned, the airtightness of the building, the conditions inside the building, and the outside temperature and humidity. 5. The fire training apparatus according to claim 1, further comprising a warning means for detecting that the height of the position in the real space is higher than the height according to the situation and warning that the position is in a dangerous position. The drawing means includes:
6. The fire training apparatus according to claim 1, wherein a narration of the fire training is displayed as subtitles. A fire training system including a fire training device for conducting fire training and a head-mounted display,
The fire training apparatus comprises:
a situation setting means for setting any one of the situations of formation of a neutral zone, occurrence of a rollover, and collapse of the neutral zone by water discharge according to the progress of the fire training;
a drawing means for drawing the situation set by the situation setting means as an image in a virtual space,
The head mounted display includes:
An image of the virtual space drawn by the drawing means is displayed, and a position and orientation of the real space can be acquired;
The drawing means includes:
aligning a position of a viewpoint in the image of the virtual space with a position and orientation of the real space acquired by the head mounted display;
A fire training system characterized in that the location of the fire in the rollover is represented by a flow of particles that glow in a flame color or is indicated by the movement of symbols so that the location of the fire in the rollover can be easily understood by the training subject. A fire training method performed by a fire training apparatus for conducting fire training, comprising:
According to the progress of the fire training, any one of the following situations is set: formation of a neutral zone, occurrence of a rollover, and collapse of the neutral zone due to water discharge;
The set situation is rendered as an image in a virtual space;
Aligning the position of a viewpoint in the image of the virtual space with the position and orientation of the real space acquired by the head mounted display;
A fire training method comprising the steps of: expressing the location of the rollover flame with a flow of particles glowing in a flame color or showing it with a movement of symbols so that the location of the rollover flame can be easily understood by a person to be trained. A fire training program executed by a fire training device for conducting fire training,
According to the progress of the fire training, any one of the following situations is set: formation of a neutral zone, occurrence of a rollover, and collapse of the neutral zone by water discharge;
Rendering the set situation as an image in a virtual space;
A fire training program for causing a computer of the fire training device to execute a function of expressing the location of the flames in the rollover by a flow of particles that glow in a flame color so that the location of the flames in the rollover can be easily identified by the trainee, or by indicating the location by the movement of symbols.

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