Underwater self-rescue teaching and training device system and teaching and training method

Abstract

The invention discloses an underwater self-rescue teaching and training device system and a teaching and training method. The underwater self-rescue teaching and training device system comprises a device structure, an AR glasses system and a training and teaching control system, the device structurally comprises a closed training cabin, a high-level water tank, a low-level water tank, a water supply and drainage system and the like. The training teaching control system comprises a teaching training controller and a sensor signal control box, wherein the training teaching control system comprises a teaching mode and a practical operation mode. The device system has the advantages that the device system has a teaching mode and an underwater practice mode, the teaching mode and the underwater practice mode can be switched at will, operation programs of the device system are basically the same under the two modes, in the teaching mode, water is not injected into the device system, and a trainee wears a simulation diving outfit, wears AR glasses and enters a training cabin; teaching and related action feedback are carried out through an AR system, an infrared sensor and a vibration sensor, so that early-stage training teaching of underwater emergency rescue training is safer and more intuitive, the teaching effect is improved, and the passing rate and the superior rate of later-stage underwater practical training of trainees are increased; and in the actual operation mode, water is injected into the device system, the underwater environment can be simulated more truly, and the success rate of underwater self-rescue is increased.

Description

Technical Field

[0001] The invention relates to the technical field of underwater escape and lifesaving, in particular to an underwater self-rescue teaching and training device system and a teaching and training method. Background Art

[0002] With the rapid development of maritime transportation, offshore mining, and offshore fishing industries, more and more accidents have occurred in the ocean. Every year, ships, even submarines, and warships are overturned and sunk in the ocean due to explosions, fires, and stranding. Due to the unfathomable depth, huge pressure, no light, and difficulty in obtaining information under the vast ocean, the environmental conditions are extremely harsh, and the underwater diving depth and duration are difficult to support dangerous and complex underwater rescue. In the prior art, most of the external rescue equipment is used to participate in underwater rescue. First, it is difficult for the outside world to obtain detailed information such as the specific location and internal state of the wrecked ship. Secondly, it is very difficult for external rescue equipment to participate in underwater rescue. The speed of external rescue forces arriving at the scene is relatively slow, and it cannot be guaranteed to arrive within the golden rescue time, thereby failing to guarantee the timeliness, safety, and accuracy of the rescue. Therefore, the underwater self-rescue device system is more practical for underwater workers, which can improve the efficiency of rescue and reduce the mortality rate of personnel after an accident. The underwater self-rescue teaching and training device system is a device for practicing the use of self-rescue skills. More practice in normal times is conducive to improving the emergency response capabilities in emergency situations. Summary of the invention

[0003] The purpose of the present invention is to provide an underwater self-rescue teaching and training device system and a teaching and training method, so that trainees do not need to rely on external rescue equipment, saving time waiting for rescue; the device system is equipped with two modes: teaching and underwater practice, which can be selected according to needs, thus improving functionality. In the teaching mode, trainees wear simulated diving equipment and AR glasses to enter the training cabin under dry conditions, and feedback on teaching-related actions is performed through the AR system and infrared and vibration sensors, which improves the safety and training effect of previous underwater training.

[0004] The technical solution of the present invention is implemented as follows: an underwater self-rescue teaching and training device system, including a device structure, an AR glasses system and a training and teaching control system; The device structure includes a closed training cabin, a high-level water pool, a low-level water tank and a water injection and drainage pipeline system; the training cabin is supported and fixed by a supporting frame, an upper hatch cover and a lower hatch cover are respectively provided on the training cabin, a hook ladder is connected between the upper and lower hatches of the training cabin, the upper part of the training cabin is placed in the high-level water pool to simulate an underwater environment of a certain depth, a vent valve is provided on the training cabin, the internal pressure of the training cabin is controlled by an inflation pipeline and an air valve group, and a water injection and drainage pipeline system is provided between the training cabin, the high-level water pool and the low-level water tank to realize circulating water supply through a circulating water pump; an inflation valve flow sensor is provided on the inflation pipeline, a pressure sensor is provided on the hook ladder, and a vibration sensor is provided on the wall of the training cabin; The training teaching control system includes a teaching training controller and a sensor signal control box. The training teaching control system includes two modes: teaching and practice. In the teaching mode, the training cabin is not filled with water, and in the practice mode, the training cabin is filled with water. The AR glasses system is synchronized with parameters of the training teaching control system. In the teaching mode, the AR glasses system simultaneously superimposes a virtual water injection process image into the field of vision of the trainees.

[0005] Furthermore, the water supply and drainage system includes an injection pipe, a drainage pipe, a water supply pipe, and an electrically controlled valve. The injection pipe is connected between the high-level water tank and the training cabin, the drainage pipe is connected between the training cabin and the low-level water tank, and the water supply pipe is connected between the high-level water tank and the low-level water tank.

[0006] Furthermore, the system also includes a water pump controller and a rectifier control box.

[0007] Furthermore, the ventilation valve flow sensor is a piezoelectric pressure sensor; and the pressure sensor is a strain gauge pressure sensor.

[0008] Furthermore, a display screen is provided on the training cabin to display the water level and pressure value in the training cabin.

[0009] Furthermore, a ladder is provided on the supporting frame outside the training cabin; and a guardrail is provided on the edge of the high-level water pool to ensure the safety of the trainees and support personnel.

[0010] The teaching and training methods of this system include two modes: teaching and practice; Teaching mode: Set the teaching training controller to "teaching", initial state, initial state, after setting the "depth" value, the trainee wears simulated diving equipment and AR glasses to enter the training cabin from the lower hatch, and then closes the lower hatch cover. At this time, the "water filling", "pressurization" and "balance" lights are all off. When the program starts running, the cabin is not actually filled with water, but the AR glasses display an image of the training cabin being filled with water. At the same time, the "water filling" light on the controller is on. After reaching a certain water level, the "water level" light is on, the ventilation valve is closed, and pressurization is performed. When the air pressure in the device is consistent with that of the high-level water pool, balance is reached, the timing is stopped, the upper hatch cover is opened, and the trainee successfully exits the cabin from the upper hatch through the hook ladder, and the simulated underwater self-rescue teaching is completed; Practice mode: turn the teaching and training controller to "practice" to enter the initial state, and then set the "depth". The depth value simulates the pressure corresponding to the natural underwater depth, which is achieved by adjusting the water pressure generated by the water volume in the high-level water tank. After the depth is set according to the training purpose, the trainees wear special underwater rescue training equipment and enter the training cabin from the lower hatch of the training cabin, and then close the lower hatch. At the beginning of the training, the timing is started, the water injection pipe valve is opened, and water is started to be injected. After reaching a certain water level, the ventilation valve is closed and pressurized. When the air pressure in the device is consistent with that of the high-level water tank, equilibrium is reached. At this time, the timing is stopped, the upper hatch is opened, and the trainees use the positive buoyancy of the equipment they wear to rescue themselves and escape from trouble. The trainees float to the surface and complete an underwater practice training.

[0011] Furthermore, in the teaching mode, relevant skill movements are assessed in combination with sensors in the training cabin; before the assessment, it is necessary to ensure that the inflation valve flow sensor, the pressure sensor on the ladder and the cabin wall vibration sensor are in normal working condition; during the assessment, the AR glasses synchronously display the parameters of the control boxes inside and outside the cabin, and the trainees need to be familiar with the strength of the inflation valve engagement and practice repeatedly. The engagement state of the inflation valve should be "completely engaged" with the green light on to qualify; the trainees need to be familiar with the action and strength of the foot hooking the ladder and practice repeatedly. The action of hooking the ladder before floating should also be "completely hooked" to qualify; the trainees need to be familiar with the action, frequency and strength of knocking and practice repeatedly. The action of knocking signal should also be "completed knocking" to qualify; the above-mentioned skill movements can only be carried out after passing the practical stage.

[0012] Furthermore, there is an "emergency" button in the training cabin. When the trainee presses the button due to physical discomfort or other emergency situations, the "emergency" light on the teaching and training controller will light up and a buzzer will sound. At this time, the support personnel should immediately stop the operation of the teaching and training control system, open the lower hatch cover, and allow the trainee to leave the training cabin safely.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the device system has two modes, teaching and underwater practice, which can be switched arbitrarily. The operating procedures of the device system are basically the same in the two modes. In the teaching mode, the trainees wear simulated diving equipment and AR glasses to enter the training cabin, and conduct teaching and related action feedback through the AR system and infrared and vibration sensors, so that the early training teaching of underwater emergency self-rescue training is safer and more intuitive, improving the teaching effect and the pass rate and excellent rate of the trainees in the later underwater practice training; while in the practice mode, the device system is filled with water, which can simulate the underwater environment more realistically and improve the success rate of underwater self-rescue. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is the structural diagram of the entire device.

[0016] Figure 2 This is a cutaway view of the training cabin.

[0017] Figure 3 It is the initial state diagram of the training and teaching system controller.

[0018] Figure 4 It is the status diagram displayed by the sensor signal control box. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figure 1 and 2 As shown, an underwater self-rescue teaching and training device system includes a device structure, an AR glasses system and a training and teaching control system; The device structure includes a closed training cabin 2, a high-level water tank 1, a low-level water tank 13 and a water supply and drainage system 6; the training cabin is supported and fixed by a supporting frame 12, and an upper hatch cover and a lower hatch cover are respectively provided on the training cabin, and a hook ladder 3 is connected between the upper and lower hatches of the training cabin. The upper part of the training cabin is placed in the high-level water tank 1 to simulate an underwater environment of a certain depth, and a vent valve is provided on the training cabin. The training cabin controls the internal pressure through an inflation pipeline and an air valve group 19. A water supply and drainage system is provided between the training cabin, the high-level water tank and the low-level water tank to realize circulating water supply through a circulating water pump 14; a vent valve flow sensor 8 is provided on the inflation pipeline, a pressure sensor 11 is provided on the hook ladder, and a vibration sensor 5 is provided on the wall of the training cabin; The training teaching control system includes a teaching training controller 18 and a sensor signal control box 17. The training teaching control system includes two modes: teaching and practice. In the teaching mode, the training cabin is not filled with water, and in the practice mode, the training cabin is filled with water. The AR glasses system is synchronized with parameters of the training teaching control system. In the teaching mode, the AR glasses system simultaneously superimposes a virtual water injection process image into the field of vision of the trainees.

[0021] The water supply and drainage system includes a water injection pipe, a drainage pipe, a water supply pipe, and an electrically controlled valve. The water injection pipe is connected between the high-level water tank and the training cabin, the drainage pipe is connected between the training cabin and the low-level water tank, and the water supply pipe is connected between the high-level water tank and the low-level water tank.

[0022] The system further includes a water pump controller 15 and a rectifier control box 16 .

[0023] The training cabin is provided with a display screen 9 for displaying the water level and pressure value in the training cabin.

[0024] A ladder 20 is provided on the support frame outside the training cabin; a guardrail 21 is provided at the edge of the high-level water pool to ensure the safety of the trainees and the support personnel involved.

[0025] The present invention also discloses the teaching and training methods of the system. The operating procedures of the device system are basically the same in the two modes. The difference is that the teaching mode adopts the AR+ device and the whole process is waterless, while the underwater practice mode adopts water operation and the trainees practice underwater.

[0026] Teaching mode: Set the teaching training controller to "teaching", initial state, initial state, after setting the "depth" value, the trainee wears simulation diving equipment and AR glasses to enter the training cabin from the lower hatch, and then closes the lower hatch cover. At this time, the "water filling", "pressurization" and "balance" lights are all off. When the program starts running, the cabin is not actually filled with water, but the AR glasses display an image of the training cabin being filled with water. At the same time, the "water filling" light on the controller is on. After reaching a certain water level, the "water level" light is on, the ventilation valve is closed, and pressurization is performed. When the air pressure in the device is consistent with that of the high-level water pool, balance is reached, and the timing is stopped at this time. The upper hatch cover is opened, and the trainee successfully exits the cabin from the upper hatch through the hook ladder, and the simulated underwater teaching ends; Practice mode: turn the teaching and training controller to "practice" to enter the initial state, and then set the "depth". The depth value simulates the pressure corresponding to the natural underwater depth, and the pressure is achieved by adjusting the water pressure generated by the water volume in the high-level water pool. After the depth is set according to the training purpose, the trainees wear special underwater rescue training equipment and enter the training cabin from the lower hatch of the training cabin, and then close the lower hatch. At the beginning of the training, the timing is started, the water injection pipe valve is opened, and water is started to be injected. After reaching a certain water level, the ventilation valve is closed and pressurized. When the air pressure in the device is consistent with that in the high-level water pool, equilibrium is reached. At this time, the timing is stopped, the upper hatch is opened, and the trainees use the positive buoyancy of the equipment they wear to escape from emergency. The trainees float to the surface and complete a training.

[0027] In addition, in the teaching mode, the sensors in the training cabin can be used to assess relevant skill movements. Before the assessment, it is necessary to ensure that the inflation valve flow sensor, the pressure sensor on the ladder and the bulkhead vibration sensor are in normal working condition. During the assessment, the AR glasses will display the parameters of the control boxes inside and outside the cabin synchronously. The trainees need to be familiar with the strength of the inflation valve engagement and practice repeatedly. The engagement state of the inflation valve should be "fully engaged" and the green light should be on to qualify. The trainees need to be familiar with the action and strength of the ladder engagement and practice repeatedly. The action of the ladder engagement before floating should also be "fully engaged" to qualify. The trainees need to be familiar with the action, frequency and strength of the knocking and practice repeatedly. The action of the knocking signal should also be "completed knocking" to qualify. Only after the above skill actions are qualified can the practical stage be carried out.

[0028] There is also an "emergency" button in the training cabin. When the trainee presses the button due to physical discomfort or other emergency situations, the "emergency" light on the teaching and training controller will light up and a buzzer will sound. At this time, the support personnel will immediately stop the operation of the teaching and training control system, open the lower hatch cover, and allow the trainee to leave the training cabin safely.

[0029] The system teaches and trains specific operation processes, such as Figure 3 and Figure 4 As shown: Normal procedure teaching, turn the "power" to "on", the power voltage displays the specific voltage value, the pressure in the cylinder displays "0" for normal pressure, turn the mode switch to "teaching", "pressure in the cylinder MPa" displays "0" for normal pressure, turn the lighting to the "on" position, the lights in the cabin are on, turn the upper cover to the "closed" position, turn the lower cover to the "open" position, turn the vent valve to the "open" position, set the depth to the **m depth value, and the trainees wear simulated diving equipment and AR glasses to enter the training cabin from the lower hatch, turn the lower cover to the "closed" position, and the "water filling", "pressurization" and "balance" lights are all off. Turn the start button to the "on" position and the program will start running. There is actually no water filling the cabin, but the AR glasses show that water is filling into the cabin from outside, and the "water filling" light on the controller is on. After about 1 minute, the "water level" light is on, and the vent valve is turned to the "off" position. The "pressurization" light is on. After about 1 minute, the "balance" light is on, and the upper cover is turned to the "open" position. The trainees successfully exit the cabin from the upper hatch, and the simulated underwater self-rescue teaching is successfully completed.

[0030] In the teaching mode, the trainees also have to teach the emergency response in case of emergencies. If an emergency such as sudden illness or device failure occurs, the trainees press the "emergency" button in the training cabin and use the spring hook to hit the emergency signal. The controller emits a "beep" sound and the "emergency" light flashes continuously, and the support personnel outside the cabin start the emergency response deployment. The support personnel outside the cabin release water and cooperate with the trainees to open the lower cover. The trainees leave the cabin and the simulated **m water depth teaching ends.

[0031] The process of assessing relevant skill actions by combining the assessment system sensors in the training cabin is as follows: Figure 3 , Figure 4 As shown, the assessment is conducted for the three key actions involving life safety in the assessment. Before the assessment, check the working status of the inflation valve flow sensor, the pressure sensor on the ladder, and the bulkhead vibration sensor. The three sensor status indicators 7 of the inflation valve combination status indicator, the hook ladder action signal indicator 10, and the knocking action signal indicator 4 are all "normal" and "fault" lights are off, and relevant assessments can be conducted. The combination status of the inflation valve should be "completely combined" with a green light on to pass. If the red light of "incomplete combination" or "uncombined" is on, it is unqualified. No matter which red or green light is on, the AR glasses, the control box inside the cabin, and the control box outside the cabin can display it synchronously. The trainees should be familiar with the strength of the inflation valve combination, practice repeatedly, and master the coordination between people and valves before participating in underwater operations. The action of hooking the ladder before floating should also be "completely hooked" and the light is on to pass. If the light of "not hooking the ladder in place" or "not hooking the ladder" is on, it is unqualified. No matter which red or green light is on, the AR glasses, the control box inside the cabin, and the control box outside the cabin can display it synchronously. Trainees should be familiar with the action and strength of hooking the ladder, practice repeatedly, and master the coordination between people and ladders before they can participate in underwater operations. The action of knocking the signal should also be that the "complete knocking" light is on to pass. If the "insufficient knocking times" or "no knocking" light is on, it will fail. No matter which red or green light is on, the AR glasses, the control boxes inside and outside the cabin can display synchronously. Trainees should be familiar with the action, frequency and strength of knocking, practice repeatedly, and master the coordination between people, spring hooks and training cabins before they can participate in underwater operations. These actions are all related to the training safety of trainees when they are training in the training cabin with water. They must be done to ensure the personal safety of underwater training. If they are done, it means that the teaching is completed and they can move on to the practical stage.

[0032] After the teaching mode is qualified, it will be transferred to the underwater practical training stage. In the underwater practical training stage, turn the controller mode switch to "practical". The difference between this and the teaching mode is that the training cabin will be flooded, and the trainees will train in the water and underwater. Turn the controller "power" to "on", "power supply voltage V" displays the specific voltage value, turn the mode switch to "practical", "cylinder pressure MPa" displays "0" for normal pressure, turn the mode switch to "teaching", turn the lighting to the "on" position, the cabin lights are on, turn the upper cover to the "off" position, turn the lower cover to the "on" position, turn the vent valve to the "on" position, set the depth to the **m depth value, and the trainees wear diving equipment to enter the training cabin from the lower hatch, turn the lower cover to the "off" position, and the "water filling", "pressurization" and "balance" lights are all off. Ready, start. Turn the start button to the "on" position, the program begins to run, the "water filling" light comes on, and after about 1 minute, the "water level" light comes on. Turn the vent valve to the "off" position, the "pressurization" light comes on, and after about 1 minute, the "balance" light comes on. Turn the upper cover to the "open" position, and the trainees successfully exit the cabin from the upper hatch. The **m depth underwater practical training is successfully completed, and the personnel have mastered the relevant skills of underwater self-rescue.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An underwater self-rescue teaching and training device system, characterized in that: Including device structure, AR glasses system and training teaching control system; The device structure includes a closed training cabin, a high-level water pool, a low-level water tank and a water injection and drainage pipeline system; The training cabin is supported and fixed by a supporting frame, and an upper hatch cover and a lower hatch cover are respectively provided on the training cabin. A hook ladder is connected between the upper and lower hatches of the training cabin. The upper part of the training cabin is placed in a high-level water tank to simulate an underwater environment of a certain depth. A vent valve is provided on the training cabin. The training cabin controls the internal pressure through an inflation pipeline and an air valve group. An injection and drainage pipeline system is provided between the training cabin, the high-level water tank and the low-level water tank to realize circulating water supply through a circulating water pump; an inflation valve flow sensor is provided on the inflation pipeline, a pressure sensor is provided on the hook ladder, and a vibration sensor is provided on the wall of the training cabin; The training teaching control system includes a teaching training controller and a sensor signal control box. The training teaching control system includes two modes: teaching and practice. In the teaching mode, the training cabin is not filled with water; in the practice mode, the training cabin is filled with water. The AR glasses system is synchronized with the parameters of the training teaching control system. In the teaching mode, the AR glasses system simultaneously superimposes the image of the virtual water filling process of the training cabin into the field of vision of the trainees.

2. A self-rescue teaching and training device system according to claim 1, characterized in that: The water supply and drainage system includes a water injection pipe, a drainage pipe, a water supply pipe, and an electrically controlled valve. The water injection pipe is connected between the high-level water tank and the training cabin, the drainage pipe is connected between the training cabin and the low-level water tank, and the water supply pipe is connected between the high-level water tank and the low-level water tank.

3. A self-rescue teaching and training device system according to claim 2, characterized in that: The system also includes a water pump controller and a rectifier control box.

4. A self-rescue teaching and training device system according to claim 1, characterized in that: The inflation valve flow sensor is a piezoelectric pressure sensor; the pressure sensor is a strain gauge pressure sensor.

5. A self-rescue teaching and training device system according to claim 1, characterized in that: The training cabin is provided with a display screen for displaying the water level and pressure value in the training cabin.

6. A self-rescue teaching and training device system according to claim 1, characterized in that: A ladder is provided on the supporting frame outside the training cabin; a guardrail is provided at the edge of the high-level water pool to ensure the safety of the trainees and support personnel.

7. A teaching and training method for a system as claimed in any one of claims 1 to 6, characterized in that: Includes two modes: teaching and practice; Teaching mode: Set the teaching training controller to "teaching" and set the "depth" value in the initial state. The trainee wears simulated diving equipment and AR glasses to enter the training cabin from the lower hatch, and then closes the lower hatch cover. At this time, the "water filling", "pressurization" and "balance" lights are all off. When the program starts running, the cabin is not actually filled with water, but the AR glasses display an image of the training cabin being filled with water. At the same time, the "water filling" light on the controller is on. When the water level reaches a certain level, the "water level" light is on, the ventilation valve is closed, and pressurization is performed. When the air pressure in the device is consistent with that of the high-level water pool, balance is achieved. At this time, the timing is stopped, the upper hatch cover is opened, and the trainee successfully exits the cabin from the upper hatch through the hook ladder, and the simulated underwater self-rescue teaching ends; Practice mode: turn the teaching and training controller to "practice" to enter the initial state, and then set the "depth". The depth value simulates the pressure corresponding to the natural underwater depth. The pressure is achieved by adjusting the water pressure generated by the water volume in the high-level water pool. After the depth is set according to the training purpose, the trainees wear special underwater rescue training equipment and enter the training cabin from the lower hatch of the training cabin, and then close the lower hatch. At the beginning of the training, the timing is started, the water injection pipe valve is opened, and water is injected. After reaching a certain water level, the ventilation valve is closed and pressurized. When the air pressure in the device is consistent with that in the high-level water pool, it reaches equilibrium. At this time, the timing is stopped, the upper hatch is opened, and the trainees use the positive buoyancy of the equipment they wear to rescue themselves and escape from trouble. The trainees float to the surface and complete an underwater practice training.

8. The teaching and training method according to claim 7, characterized in that: In the teaching mode, the relevant skill movements are assessed in combination with the sensors in the training cabin; before the assessment, it is necessary to ensure that the inflation valve flow sensor, the pressure sensor on the ladder and the cabin wall vibration sensor are in normal working condition; during the assessment, the AR glasses and the parameters of the control boxes inside and outside the cabin are displayed synchronously, and the trainees need to be familiar with the strength of the inflation valve engagement and practice repeatedly. The engagement state of the inflation valve should be "completely engaged" with the green light on to qualify; the trainees need to be familiar with the action and strength of the foot hooking the ladder and practice repeatedly. The action of hooking the ladder before floating should also be "completely hooked" to qualify; the trainees need to be familiar with the action, frequency and strength of knocking and practice repeatedly. The action of knocking the signal should also be "completed knocking" to qualify; the above-mentioned skill movements can only be carried out in the practical stage after passing.

9. The teaching and training method according to claim 1, characterized in that: There is an "emergency" button in the training cabin. When the trainee presses the button due to physical discomfort or other emergency situations, the "emergency" light on the teaching and training controller will light up and a buzzer will sound. At this time, the support personnel will immediately stop the operation of the teaching and training control system, open the lower hatch cover, and allow the trainee to leave the training cabin safely.

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