CN113920809A - Mixed reality teaching system for ship fire-fighting training - Google Patents
Mixed reality teaching system for ship fire-fighting training Download PDFInfo
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Abstract
The invention provides a ship fire-fighting training mixed reality teaching system, which comprises a fire simulation system, a virtual superposition interactive system and a central control system, wherein the fire simulation system is connected with the central control system through a network; the fire simulation system comprises a cabin model, a fire simulation module, a smoke generator and a model control system; the virtual superposition interactive system comprises an image acquisition device, an image processing device, a posture recognition system, a display system and an image server; the central control system comprises a main control computer, a data acquisition system, a data processing system and a platform control system. The invention adopts the cabin model and the corresponding equipment, and combines the hybrid display device to simulate the real scene of a fire as much as possible, thereby improving the experience of the personnel involved in training and improving the training effect. The real fire does not exist in the training process, and partial smoke is generated in a virtual mode and mutually assists with real smoke, so that the experience effect is improved, and meanwhile, the danger can be reduced.
Description
Technical Field
The invention relates to the field of fire-fighting training, in particular to a ship fire-fighting training mixed reality teaching system.
Background
The fire fighting skill is a basic skill which must be possessed by a crew, and whether the crew can effectively take correct treatment measures in time after the cabin is on fire is very important for improving the vitality of the ship and ensuring the life safety of personnel. As an important part of the training of crew in fire fighting, crew members need to be very familiar with the internal cabin structure of the ship and the fire fighting piping system on board and the method of use of the corresponding fire fighting equipment. It is also necessary to be familiar with the fire and the flow pattern of smoke in the compartments and passageways after a fire in the compartment to take proper and effective measures in the event of a fire. Traditional crew fire-fighting training only relies on reading the two-dimensional drawing and actually touches and climbs the inside fire-fighting piping system of boats and ships and realize, and along with the development of modern boats and ships, not only the boats and ships tonnage is bigger and bigger, and inside cabin structure is more and more complicated, and its piping system is also more and more complicated day by day. The pipeline system in the ship has various types, pipelines convey various different working mediums, various pipelines are mutually interwoven, and various structures and equipment are mutually shielded. The above situation makes the fire-fighting training of the crew depend on the traditional training mode and the problems of large understanding difficulty, long training period and poor training effect are faced. Chinese patent literature describes a CN111760227A, which discloses a movable fire-fighting training simulation cabin, which is formed by transforming a standard container, and comprises: the modular cabin, the water spraying system and the fixed gas fire extinguishing system are sequentially arranged in the standard container; the modular cabin comprises a control center chamber, a pump group chamber, a gas chamber, a fire simulation chamber and a training preparation chamber. However, this solution has the following problems: 1. the volume is large, the transportation is inconvenient, and the construction and maintenance cost is high; 2. real fire is adopted in the training process, so that danger exists; 3. the technical solution provided in the reference does not take into account the influence of fire smoke on the trained personnel. 4. The technical scheme provided in the comparison document can not provide real-time guidance for the training personnel and carry out on-site evaluation on the training effect, so the training effect is not ideal. CN 106601060A describes a fire scene experience virtual reality system, simulates the fire scene through virtual reality, and has the problem that experience is insufficient through simulation of a virtual scene. Moreover, the scheme of infrared motion capture is adopted, so that the motion gesture is not collected finely and the experience is not real. Similarly, a virtual fire-fighting training system recorded in CN 106816057a has the problems of unreal experience and insufficient training effect.
Disclosure of Invention
The invention aims to solve the technical problem of providing a ship fire-fighting training mixed reality teaching system, which can improve the reality of training and simulate various scenes by relatively real experience, thereby improving the training effect. In the preferred scheme, through simplifying current structure, on the controllable basis of cost, improve the authenticity that the gesture was gathered by a wide margin, further improve interactive authenticity to improve the training effect.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a ship fire-fighting training mixed reality teaching system comprises a fire simulation system, a virtual superposition interactive system and a central control system;
the fire simulation system comprises a cabin model, a fire simulation module, a smoke generator and a model control system;
the virtual superposition interactive system comprises an image acquisition device, an image processing device, a posture recognition system, a display system and an image server;
the central control system comprises a main control computer, a data acquisition system, a data processing system and a platform control system.
In a preferred scheme, a plurality of cabins positioned below a main deck and a plurality of cabins positioned above the main deck are arranged in the cabin model, and a fire fighting pipe and a warning lamp are also arranged in the cabin model;
the smoke generator is arranged in the cabin model, and the generated smoke is transmitted to each cabin and the living cabin through the cabin door;
a combustion device is also arranged in the cabin model;
the smoke generator, the valve of the fire fighting pipe and the combustion device are electrically connected with the model control system.
In the preferred scheme, a fire extinguishing gas cylinder and a fire extinguishing gas pipe are also arranged in the cabin model;
and the cabin model is also provided with a ceiling collapse simulation device, a trap simulation device, a container collapse simulation device and a wall collapse simulation device, and the ceiling collapse simulation device, the trap simulation device, the container collapse simulation device and the wall collapse simulation device are connected with the model control system.
In a preferred scheme, the display system comprises a mixed display device worn on the head of a user, wherein the mixed display device is provided with a mixed display gyroscope and/or a mixed display accelerometer, a mixed display camera and a mixed display transparent display corresponding to two eyes;
the hybrid display device is electrically connected with the image processing device and the gesture recognition system.
In a preferred embodiment, the hybrid display camera is used for capturing real-world objects for correcting the virtual model created by the image processing device.
In a preferred scheme, the hybrid display transparent display is used for displaying a virtual scene comprising virtual smoke, virtual flames and fire extinguishing media of fire fighting equipment, and the virtual scene is overlapped with objects displaying the world.
In a preferred scheme, the gesture recognition system comprises a hand motion acquisition device, and the hand motion acquisition device is provided with a hand accelerometer and/or a hand gyroscope and is used for detecting hand gestures;
the device is also provided with flexible optical fibers, the flexible optical fibers are fixedly arranged on a hand supporting structure, the hand supporting structure is used for being sleeved on a hand, the single flexible optical fiber sequentially passes through the side surfaces of all fingers, one end of each flexible optical fiber is connected with an optical signal transmitting device, and the other end of each flexible optical fiber is connected with an optical signal collecting device;
the hand motion acquisition device is also provided with a wireless connection device and a battery, wherein the wireless connection device is used for sending data, and the battery is used for supplying power.
In a preferred embodiment, the flexible optical fiber is wound at least one turn at the finger pulp of each finger.
In a preferred scheme, an optical fiber curing structure is arranged at a position of the flexible optical fiber corresponding to the finger non-joint, and the optical fiber curing structure is fixedly connected with the flexible optical fiber, so that the flexible optical fiber at the position corresponding to the finger non-joint is not deformed.
In the preferred scheme, a training and evaluating system is further arranged, and comprises a fire fighting skill training module, a fire fighting skill evaluating module and a fire fighting scheme expert library;
the fire fighting skill training module is used for setting various fire situations through a mixed display device in the display system, enabling the participators to participate in simulated fire fighting scenes in person, and mastering fire fighting skills through the use of various fire fighting equipment and the disposal of various fire fighting measures;
the fire fighting skill evaluation module is used for evaluating the performance of the personnel participating in the training;
the fire-fighting scheme expert database is used for storing fire-fighting plans and optimizing and iterating the corresponding fire-fighting plans.
The invention provides a ship fire-fighting training mixed reality teaching system, which has the following beneficial effects compared with the prior art:
1. the invention adopts the cabin model and the corresponding equipment, and combines the hybrid display device to simulate the real scene of a fire as much as possible, thereby improving the experience of the personnel involved in training and improving the training effect.
2. The invention does not have real fire in the training process, and partial smoke is generated in a virtual mode and mutually assists with real smoke, so that the experience effect is improved, and meanwhile, the danger can be reduced.
3. The hybrid display device adopts the auxiliary vision correction technology, so that the error between the virtual scene and the real scene can be further reduced, and the real experience effect is improved.
4. According to the invention, through the hand motion acquisition device, the hand motion can be accurately acquired with lower cost and smaller data volume, the interaction between the hand motion and virtual equipment or scenes is realized, the real experience effect is improved, and the loss of training equipment or consumables is also avoided.
5. The training process of the invention considers the influence of fire scene smoke on fire fighters, the smoke generator arranged in the training provides smoke, the smoke spreads through compartment doors of various compartments, and the flow characteristic of the smoke in the compartments can be demonstrated by combining the mixed display device, so that the situation of the fire is closer to the situation of a real fire, and the teaching and training effects are better.
6. The training process of the invention is clear, the man-machine interaction can be realized through the mixed reality equipment, and the device is easy to be understood and accepted by the personnel involved in the training, thereby being more suitable for developing the fire fighting skill training of the crew.
7. The invention can evaluate and analyze the training effect, which is beneficial to guiding the training of the training personnel; by adopting a modular design idea, each cabin and the fire-fighting pipeline system can be detached or combined; each cabin and fire control pipeline system adopt the transparentization design, and the bandwagon effect is directly perceived, and the personnel of participating in the training can refer to the drawing, and the family can make the better composition and the structure of understanding boats and ships fire control system of personnel of participating in the training.
8. The invention can be used for training and verifying various emergency treatment plans of the fire-fighting system under various damage conditions such as cabin damage, fire and the like.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a block diagram of the present invention.
FIG. 2 is a schematic cross-sectional view of a model of the chamber of the present invention.
Fig. 3 is a schematic view of the structure inside the cabin of the present invention.
FIG. 4 is a schematic diagram of a complete simulation scenario in the cabin model of the present invention.
Fig. 5 is a schematic diagram of the present invention in practice.
Fig. 6 is a schematic structural diagram of a hybrid display device according to the present invention.
Fig. 7 is a schematic structural view of a hand motion collection device according to the present invention.
Fig. 8 is a schematic view of the arrangement of flexible optical fibers according to the present invention.
In the figure: bilge floor 1, cabin 2, secondary deck 3, side board 4, main deck 5, accommodation 6, fire-fighting pipe 7, warning light 8, cabin door 9, control center 10, exhaust fan 11, air intake grille 12, power distribution cabinet 13, center monitoring console 14, pump room 15, water pump 16, fire-fighting gas cylinder 17, fire-fighting gas pipe 18, gas room 19, gas storage device 20, simulation training room 21, explosion-proof smoke exhaust fan 22, fire door 23, combustion device 24, ceiling collapse simulation device 25, trap simulation device 26, container collapse simulation device 27, wall collapse simulation device 28, training preparation room 29, fire hydrant 30, smoke generator 31, fire-fighting equipment cabinet 32, mixed display device 33, mixed display gyroscope 331, mixed display camera 332, mixed display transparent display 333, mixed display accelerometer 334, virtual fire-fighting gas 34, virtual smoke 35, virtual flame 36, the hand motion acquisition device 37, the hand support structure 371, flexible optic fibre 372, hand accelerometer 373, hand gyroscope 374, hand pressure sensing structure 375, light signal acquisition device 376, wireless connection device 377, battery 378, light signal emission device 379, optic fibre solidification structure 370.
Detailed Description
As shown in fig. 1-4, a ship fire-fighting training mixed reality teaching system comprises a fire simulation system, a virtual superposition interactive system and a central control system;
the fire simulation system comprises a cabin model, a fire simulation module, a smoke generator and a model control system; the structure of the cabin model is as shown in figures 2-4, the cabin model bottom is provided with a cabin 2, two layers of cabins 2 are separated by two decks 3, a bottom board 1 is placed on the ground, and a side board 4 adopts a transparent structure, so that a trainee can observe a hull structure and internal pipelines conveniently. The ship body comprises a plate and a framework, and further preferably, the plate and the framework are transparent or semitransparent. The term "transparent" and "semi-transparent" are only limited to different degrees of transparency, and "transparent" requires the object on the back to be seen through, while "semi-transparent" allows part of the light to pass through but does not allow the object on the back to be seen through. The ship scaling model of this embodiment has rationally utilized transparentization and/or translucence design for the ship can not shelter from boats and ships fire-fighting piping system, also can not shelter from the all the other parts of ship, is convenient for observe the installation of boats and ships fire-fighting piping system on the ship. Above the main deck 5, a cabin 6 is arranged. Fig. 3 shows a schematic structural view of the accommodation 6 in order to facilitate a plurality of simulation exercises to be carried out simultaneously. In fig. 4, a complete simulation scenario of the housing 6 is shown, comprising a control centre 10, a pump unit chamber 15, a gas chamber 19, a simulated training chamber 21 and a training preparation chamber 29, respectively, connected to each other. An intake grill 12 and a discharge fan 11 are provided in each scene to facilitate rapid discharge of the smoke produced, wherein an explosion-proof smoke discharge fan 22 is provided in the simulation training room 21 to improve safety. A power distribution cabinet 13 is arranged in the control center 10 for supplying power. A central monitoring station 14 is also provided for controlling the individual physical simulation devices and for monitoring and evaluating the performance of the personnel involved. A water pump 16 is provided in the pump chamber 15 for supplying the fire hose 7 with water. A fire extinguishing gas bottle 17 and a fire extinguishing gas pipe 18 are also arranged, and the fire extinguishing gas pipe 18 is introduced into the simulated training room 21. The gas storage device 20 is disposed in the gas chamber 19 for supplying gas to the combustion device 24. The simulation training room 21 of the cabin model is further provided with a ceiling collapse simulation device 25, a trap simulation device 26, a container collapse simulation device 27 and a wall collapse simulation device 28, and the ceiling collapse simulation device 25, the trap simulation device 26, the container collapse simulation device 27 and the wall collapse simulation device 28 are connected with the model control system. The ceiling collapse simulation device 25, the trap simulation device 26, the container collapse simulation device 27 and the wall collapse simulation device 28 all adopt mechanical structures to realize simulation actions so as to improve the authenticity of training. For example, the ceiling collapse simulator 25 and the trap simulator 26 are implemented by hoisting or lowering a hoist. The container collapse simulator 27 and the wall collapse simulator 28 are driven by cylinders attached to the wall, while the moving containers and walls are made of lightweight fire retardant materials, such as perlite filled fire retardant plastics. A combustion device 24 is also arranged in the cabin model; the combustion device 24 generates heat by combustion, but does not generate an open flame, and the virtual flame 36 is provided by a hybrid display device 33 worn by the trainee to avoid safety risks. The smoke generator 31 is arranged in the training preparation room 29 of the cabin model, and the generated smoke is transmitted to each cabin 2 and the accommodation 6 through the cabin door 9; preferably, not all of the smoke is real, but part of the virtual smoke 35 is provided by the hybrid display device 33, so that the central monitoring station 14 of the control center 10 can conveniently observe the trainees in each simulated training room 21 through the cameras in the cabin while ensuring the real experience of the scene.
The virtual superposition interactive system comprises an image acquisition device, an image processing device, a posture recognition system, a display system and an image server; the image capturing device includes two cameras disposed on the hybrid display device 33, and preferably, the two cameras are used for capturing a real scene in a stereoscopic manner. The image processing device is used for generating virtual images, such as broken structures, personnel needing search and rescue, virtual smoke 35 and virtual flame 36, and virtual fire extinguishing gas 34 sprayed out of the fire extinguishing gas bottle 17, so that the safety can be improved, the consumption of consumables is reduced, the time for rearranging scenes is saved, and the training experience is not reduced too much. Virtual smoke 35, virtual flames 36, and virtual fire suppressing gas 34 are implemented using three-dimensional translucent smoke textures. The background portion of the three-dimensional translucent smoke texture is fully transparent pixels, while the smoke portion is a translucent texture, preferably in the 16bitEXR format. The three-dimensional semitransparent smog texture has vector parameters, namely, when a plurality of smog textures are overlapped or staggered, the transparency degree of the smog textures is reduced or increased, so that the real experience is improved.
The central control system comprises a main control computer, a data acquisition system, a data processing system and a platform control system. The central control system mainly processes other data except the graphic data.
In the preferred scheme, a fire fighting pipe 7 and a warning lamp 8 are also arranged in the cabin model; the fire fighting pipe 7 is provided with a plurality of nozzles for extinguishing fire, and the warning lamp 8 has various colors, such as red, yellow and green.
The smoke generator 31, the valve of the fire fighting pipe 7 and the combustion device 24 are electrically connected with the model control system. The smoke generator 31, the valves of the fire hose 7 and the combustion device 24 can be controlled in a remote or automatic manner. To simulate different fire scenarios.
In a preferred embodiment, as shown in fig. 5 and 6, the display system includes a hybrid display device 33 worn on the head of the user, the hybrid display device 33 is provided with a hybrid display gyroscope 331 and a hybrid display accelerometer 334, wherein the hybrid display gyroscope 331 is used for acquiring head rotation angle data, the hybrid display accelerometer 334 is used for acquiring head displacement data, and the head posture of the participant is obtained by the joint calculation of the data, and the posture interacts with the three-dimensional scene generated by the image processing device, i.e. the visual angle change of the participant is synchronized with the head posture change. In some more economical configurations, only one of the hybrid display gyroscope 331 and the hybrid display accelerometer 334, typically the hybrid display accelerometer 334, may be selected, with the remainder captured in software or other sensors to reduce cost. A mixed display camera 332 and a mixed display transparent display 333 corresponding to the two eyes are also arranged;
the hybrid display device 33 is electrically connected to the image processing device and the posture recognition system.
In a preferred embodiment, the hybrid display camera 332 is used to capture real-world objects for use in modifying the virtual model created by the image processing device. In an image processing apparatus, such as a graphic workstation, the hybrid display cameras 332 preferably use two, and coordinates of an object in the real world are detected by binocular vision, i.e., binocular range finding. And comparing the detected coordinates of the object with corresponding objects in the three-dimensional scene generated by the image processing device, and if the detected coordinates of the object and the corresponding objects in the three-dimensional scene have errors, correcting the corresponding objects in the three-dimensional scene by the image processing device so as to accurately coincide with the objects in the real world detected by binocular vision. With this configuration, the cumulative error of the hybrid display gyroscope 331 and the hybrid display accelerometer 334 can be compensated. The virtual image generated by the image processing device is accurately fused with the real world object, so that the effect of falseness and falseness is achieved, and the training effect is greatly improved. For example, a dummy flame 36 burned by a bear on the combustion device 24, a large amount of smoke rushing into the hatch 9, a damaged position of a pipeline, a blood stain on a dummy, a knob of a fire hydrant, a button of a fire switch, and a dummy fire extinguishing gas 34 emitted from the fire extinguishing gas cylinder 17.
In a preferred embodiment, as shown in fig. 6, the hybrid display transparent display 333 is used to display a virtual scene including virtual smoke, virtual flames, and fire extinguishing medium of fire fighting equipment, and to overlay the virtual scene with objects showing the world. By adopting the structure of the mixed display transparent display 333, the virtual scene is accurately superimposed with the real world, and the training experience is improved. The hybrid display transparent display 333 is a commercially available component, for example, the structure described in CN 105976768A.
In a preferred embodiment, the gesture recognition system includes a hand motion acquisition device 37, and the hand motion acquisition device 37 is provided with a hand accelerometer 373 and/or a hand gyroscope 374 for detecting hand gestures;
still be equipped with flexible optic fibre 372, flexible optic fibre 372 sets firmly on hand bearing structure 371, hand bearing structure 371 is used for the cover on hand, single flexible optic fibre 372 passes through the side of each finger in proper order, the side of finger is the position that the finger is crooked to flexible optic fibre 372 length change influence is minimum, and single flexible optic fibre 372 can pass through two sides of a finger, from this structure, two deformation data that the bending of finger produced can the proofreading each other to improve the precision that the crooked volume of finger detected. One end of the flexible optical fiber 372 is connected with the optical signal emitting device 379, and the other end is connected with the optical signal collecting device 376; the servo system of the flexible optical fiber 372 is the system described in the prior art, such as CN1612174A, CN109655008A, and the present invention achieves better and more economic effects through the optimized improvement of the structure. In the prior art, a multi-fiber structure is usually adopted, and the bending position and the bending angle are calculated by adopting one flexible optical fiber 372 in a Bragg grating mode, so that the state of each finger can be accurately calculated, and the accurate acquisition of hand actions is realized at lower cost. In this example, a joint solution of hand accelerometer 373 and hand gyroscope 374 is preferred. With such a structure, the hand motion capture device 37 of the present application is able to complete very precise interactive motions in a virtual scene. Such as actuating a switch, pressing a button, unscrewing a knob, and depressing a handle.
The hand motion capture device 37 is further provided with a wireless connection device 377 for transmitting data and a battery 378 for supplying power. With the structure, real-time transmission of hand motion data is realized.
The preferred solution is that the flexible optical fiber 372 is wound at least one turn at each finger position as shown in fig. 7. With the structure, the coiled flexible optical fiber 372 can conveniently transmit a deformation signal, the deformation signal can be combined with the position to give a pressing instruction, and the pressing strength can be obtained through the deformation. That is, the specific position of the wound flexible fiber 372 on the fiber is calibrated, the bending signal generated by the flexible fiber 372 at the position is interpreted as the pressure change value, and the bending signal generated by the flexible fiber 372 at the side of the finger is interpreted as the bending action of the finger.
In a preferred embodiment, as shown in fig. 8, an optical fiber curing structure 370 is disposed at a position where the flexible optical fiber 372 corresponds to the finger, and the optical fiber curing structure 370 is made of hardened plastic, such as PC plastic. The fiber curing structure 370 is fixedly attached to the flexible optical fiber 372 so that the flexible optical fiber 372 is not deformed at a location corresponding to the finger's non-joint. With the structure, more deformation is concentrated at the position of the finger joint, so that a simple fiber grating node is formed, a plurality of Bragg peak graphs are fed back at the bending position, and the specific bending position is obtained by combining time domain judgment. And during calibration, calibrating a feedback result of a preset bending point, and filtering as noise before judgment. Therefore, the acquired bending motion of the finger joints is more sensitive and accurate. The interaction effect in the virtual scene is greatly improved.
Further preferably, a fiber grating is provided at a position corresponding to the finger joint. With this configuration, the detection accuracy is further improved.
Further preferably, the bending amplitude of the finger is limited to the physiological limit position of the human finger bending, and the bending direction of the finger can be obtained by combining the hand gestures fed back by the hybrid display gyroscope 331 and the hybrid display accelerometer 334. Therefore, the finger bending direction guide structure is not required to be additionally arranged.
The preferred scheme is as shown in fig. 1, and the system is further provided with a training and evaluating system, wherein the training and evaluating system comprises a fire fighting skill training module, a fire fighting skill evaluating module and a fire fighting scheme expert database;
the fire fighting skill training module is used for setting various fire situations through a mixed display device 33 in the display system, enabling the participating personnel to participate in the simulated fire fighting scene in person, and mastering fire fighting skills through the use of various fire fighting equipment and the disposal of various fire fighting measures;
the fire fighting skill evaluation module is used for evaluating the performance of the personnel participating in the training;
the fire-fighting scheme expert database is used for storing fire-fighting plans and optimizing and iterating the corresponding fire-fighting plans.
Example 1:
a) the training personnel wear the interactive mixed reality equipment, the system is started, the self-checking completion is displayed on a user interface after the system completes the self-checking, and the user can choose to learn or check;
b) after the participators choose to learn, the system randomly picks out a plan from a training plan library preset in a fire-fighting plan expert library and starts training;
c) the system demonstrates various preset fire scenes through the hybrid display device 33, and in each key node of fire evolution, in order to effectively extinguish fire, the personnel involved in training need to make a plurality of selections according to actual conditions, when the selection of the personnel involved in training is correct, the system prompts that the selection is correct, and whether the step is explained in detail through an audio and video mode is determined according to the personnel involved in training. When the error of the personnel is selected, the system prompts the selection error, and whether the step is explained in detail in an audio and video mode is determined according to the personnel. After the description in the step is finished, the participator decides whether to start the demonstration process of the next stage until the next key node, the system gives the option again, and the participator makes a selection;
d) repeating the step c until all the preset fire scenes are demonstrated, and all the option training personnel have made a selection;
e) the system prompts the training personnel whether to restart the training, or skip the training to start new training, or quit training;
f) when the participant makes a selection, the system restarts the current training or starts a new training according to the requirements of the participant;
g) repeating the c-f process until the training personnel select to quit the training;
h) and (5) closing the system and finishing training.
Example 2:
a1) the trainees wear the interactive mixed reality equipment well, start the system, display the completion of self-checking on a user interface after the system completes the self-checking, and can choose to study or check;
b1) after the user selects the examination, the system randomly selects a plan from an examination plan library preset in a fire-fighting scheme expert library, and starts the examination process;
c1) the system demonstrates various preset fire scenes through the hybrid display device 33, and in each key node of fire evolution, in order to effectively extinguish fire, the personnel involved in training need to make a plurality of selections according to actual conditions, when the selection of the personnel involved in training is correct, the system prompts that the selection is correct, and whether the step is explained in detail through an audio and video mode is determined according to the personnel involved in training. When the error of the personnel is selected, the system prompts the selection error, and whether the step is explained in detail in an audio and video mode is determined according to the personnel. After the description in the step is finished, the participator decides whether to start the demonstration process of the next stage until the next key node, the system gives the option again, and the participator makes a selection;
d1) repeating the step c1 until the preset fire scene is completely demonstrated, and all the option participants have made selections;
e1) when all the choices made by the participants are correct, the system demonstrates that the fire is successfully extinguished, and the system prompts the participants that the examination is qualified, and the next examination can be started;
f1) when more than one selection made by the participants is incorrect, the system demonstrates that the fire is not successfully extinguished, and the system prompts the participants that the examination is not qualified and the next examination is started;
g1) repeating the processes of c 1-e 1 until all preset assessment items are assessed, giving assessment scores by the system for the participants, and judging whether the assessment is qualified;
h1) the system inquires the trainees to select to quit or continue to start the next round of examination;
i1) the participator selects to continue the next round of examination, and the processes from b1 to g1 are repeated until the participator selects to quit;
j1) and after the trainee selects to quit, the system is closed, and the examination is finished.
Example 3:
the specific process of fire fighting skill assessment is illustrated by a specific embodiment:
a2) the trainees wear the interactive mixed reality equipment well, start the system, display the completion of self-checking on a user interface after the system completes the self-checking, and can choose to study or check;
b2) after the user selects the examination, the system randomly selects a plan from a preset examination plan library, and starts the examination process by taking the fire plan of the main engine room as an example;
c2) assuming that the main cabin is on fire, the red light-emitting LED bulb emits red light and continuously flickers, the smoke generator 31 is started, smoke is transmitted to the smoke valve of the cabin 2 through the smoke pipeline, the smoke valve is opened, and the smoke enters the cabin 2. The smoke alarm in the cabin 2 sends out an alarm when detecting that the smoke concentration in the cabin reaches a threshold value so as to prompt the trainee that the cabin where the trainee is located catches fire, and at the moment, the user interface displays the following information: a lubricating oil pipe of the main engine bursts, lubricating oil is sprayed to the outer wall of the smoke exhaust pipe, the lubricating oil is burnt due to the fact that the outer wall of the smoke exhaust pipe is high in temperature, the main engine cabin is filled with dense smoke, and a correct disposal measure is selected; the virtual image showing the burst of the lubricating oil pipe of the host computer in real time in the mixed display device 33 is superposed to the real pipeline, and the virtual image showing the lubricating oil injection, the virtual flame 36 and the virtual smoke 35 are displayed in real time.
d2) After the trainees take correct treatment measures, corresponding treatment actions are carried out by the hand action acquisition device 37, for example, the fire extinguishing gas cylinder 17 is taken, the handle is pressed, the action data are sent to the image processing device, the virtual fire extinguishing gas 34 superposed at the nozzle position of the fire extinguishing gas cylinder 17 is displayed by the mixed display device 33 in real time, the virtual flame 36 is correspondingly reduced or even reduced, and the risk is eliminated if the power supply is disconnected by the operation switch. The red luminous LED bulb of the warning lamp 8 is turned off, the green luminous LED bulb is normally on, the smoke alarm stops giving an alarm, the smoke valve of the main cabin is closed, the smoke exhaust valve is opened to exhaust smoke, the smoke alarm stops giving an alarm, the situation of fire of the main cabin is extinguished is shown above, and the examination process enters step i 2;
e2) when the trainee does not take correct treatment measures, the red and orange light-emitting LED bulbs are simultaneously lightened and continuously flash, the smoke alarm continuously gives out alarm sound to indicate that the fire condition of the cabin where the smoke alarm is positioned is not extinguished, and the fire condition enters step f 2;
f2) the cabin and adjacent cabin compartment doors are not closed and smoke within the cabin is vented through the compartment doors to the adjacent cabin, the smoke detector inside the adjacent cabin detects the smoke and issues an alarm, while the red LED bulb of the cabin interior warning light 8 emits a red light and continues to flash to indicate that the cabin is on fire. The user interface now displays the following information: if the cabin is on fire and the fire has spread to the adjacent cabin, please choose the right treatment;
g2) after the trainees take correct treatment measures, the red light-emitting LED bulb of the warning lamp 8 is turned off, the green light-emitting LED bulb is normally on, the smoke exhaust valve close to the cabin compartment door is opened to exhaust smoke, the smoke alarm stops giving an alarm, the situation that the fire of the adjacent cabin is extinguished is shown above, and the examination process enters the next step;
h2) repeating the steps d 2-g 2 for a plurality of times until the preset fire scene is completely demonstrated, and allowing the trainees to go through all treatment measures;
i2) when all the treatment measures of the reference personnel are correct, the system prompts that the fire is successfully extinguished, and the reference personnel can start the next examination if the examination is qualified; when more than one selection made by the participants is incorrect, the system demonstrates that the fire is not successfully extinguished, and the system prompts the participants that the examination is not qualified and the next examination is started;
j2) repeating the processes of d 2-i 2 until all preset assessment items are assessed, giving user assessment scores by the system, and performing comment on the assessment scores of the user;
k2) the system asks the user to choose to exit or continue to start the next round of assessment; for example, measures related to handling the occurrence of obstacles, such as simulated obstacles by the ceiling collapse simulator 25, the trap simulator 26, the container collapse simulator 27, and the wall collapse simulator 28.
l2) the user selects to continue the next round of examination, the processes from b2 to j2 are repeated until the user selects to quit;
m2) after the user selects to quit, the system is closed and the examination is finished.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (10)
1. The utility model provides a boats and ships fire control training mixed reality teaching system, characterized by: the system comprises a fire simulation system, a virtual superposition interactive system and a central control system;
the fire simulation system comprises a cabin model, a fire simulation module, a smoke generator and a model control system;
the virtual superposition interactive system comprises an image acquisition device, an image processing device, a posture recognition system, a display system and an image server;
the central control system comprises a main control computer, a data acquisition system, a data processing system and a platform control system.
2. The ship fire-fighting training mixed reality teaching system of claim 1, wherein: the cabin model is provided with a plurality of cabins (2) positioned below the main deck (5), a plurality of cabins (6) positioned above the main deck (5), and a fire fighting pipe (7) and a warning lamp (8) inside;
the smoke generator (31) is arranged in the cabin model, and the generated smoke is transmitted to each cabin (2) and the accommodation (6) through the cabin door (9);
a combustion device (24) is also arranged in the cabin model;
the smoke generator (31), the valve of the fire fighting pipe (7) and the combustion device (24) are electrically connected with the model control system.
3. The ship fire-fighting training mixed reality teaching system of claim 1, wherein: a fire extinguishing gas cylinder (17) and a fire extinguishing gas pipe (18) are also arranged in the cabin model;
the cabin model is also provided with a ceiling collapse simulation device (25), a trap simulation device (26), a container collapse simulation device (27) and a wall collapse simulation device (28), and the ceiling collapse simulation device (25), the trap simulation device (26), the container collapse simulation device (27) and the wall collapse simulation device (28) are connected with the model control system.
4. The ship fire-fighting training mixed reality teaching system of claim 1, wherein: the display system comprises a mixed display device (33) worn on the head of a user, wherein the mixed display device (33) is provided with a mixed display gyroscope (331) and/or a mixed display accelerometer (334), a mixed display camera (332) and a mixed display transparent display (333) corresponding to two eyes;
the hybrid display device (33) is electrically connected to the image processing device and the gesture recognition system.
5. The ship fire-fighting training mixed reality teaching system of claim 4, wherein: a hybrid display camera (332) is used to capture real-world objects for use in modifying the virtual model created by the image processing apparatus.
6. The ship fire-fighting training mixed reality teaching system of claim 4, wherein: a hybrid display transparent display (333) is used to display a virtual scene of fire extinguishing medium including virtual smoke, virtual flames, and fire equipment, and to overlay the virtual scene with objects showing the world.
7. The ship fire-fighting training mixed reality teaching system of claim 1, wherein: the gesture recognition system comprises a hand motion acquisition device (37), wherein the hand motion acquisition device (37) is provided with a hand accelerometer (373) and/or a hand gyroscope (374) and is used for detecting hand gestures;
the optical fiber type optical fiber hand protector is further provided with a flexible optical fiber (372), the flexible optical fiber (372) is fixedly arranged on a hand supporting structure (371), the hand supporting structure (371) is used for being sleeved on a hand, the single flexible optical fiber (372) sequentially passes through the side face of each finger, one end of the flexible optical fiber (372) is connected with an optical signal emitting device (379), and the other end of the flexible optical fiber (372) is connected with an optical signal collecting device (376);
the hand motion acquisition device (37) is further provided with a wireless connection device (377) and a battery (378), wherein the wireless connection device (377) is used for sending data, and the battery (378) is used for supplying power.
8. The ship fire-fighting training mixed reality teaching system of claim 7, wherein: at the location of each finger's abdomen, the flexible optical fiber (372) is wound at least one turn.
9. The ship fire-fighting training mixed reality teaching system of any one of claims 7 or 8, wherein: an optical fiber curing structure (370) is arranged at the position of the flexible optical fiber (372) corresponding to the finger non-joint, and the optical fiber curing structure (370) is fixedly connected with the flexible optical fiber (372) so that the flexible optical fiber (372) at the position corresponding to the finger non-joint is not deformed.
10. The ship fire-fighting training mixed reality teaching system of claim 1, wherein: the system is also provided with a training and evaluating system which comprises a fire fighting skill training module, a fire fighting skill evaluating module and a fire fighting scheme expert database;
the fire fighting skill training module is used for setting various fire situations through a mixed display device (33) in the display system, enabling the participators to participate in simulated fire fighting scenes in person, and mastering fire fighting skills through the use of various fire fighting equipment and the disposal of various fire fighting measures;
the fire fighting skill evaluation module is used for evaluating the performance of the personnel participating in the training;
the fire-fighting scheme expert database is used for storing fire-fighting plans and optimizing and iterating the corresponding fire-fighting plans.
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