A hard hardware hyperbaric oxygen chamber cabin body life monitoring method and safety early warning device

Abstract

A kind of cabin body life monitoring method of hard high pressure oxygen cabin, comprising the following steps: step one, elastic resistance wire is arranged on the surface of the cabin body of hard high pressure oxygen cabin, and the normal pressure state of hard high pressure oxygen cabin is identified by pressure sensor, and initial resistance value under normal pressure state is monitored and recorded, and is recorded as data A;Step two, by pressure sensor identification pressurization state, monitor and record the deformation resistance value after pressurization, and is recorded as data B;Step three, reduce pressure to recover normal pressure state, and the normal pressure state is identified by pressure sensor, and resistance recovery data is monitored and recorded again, and is recorded as data C;Step four, the deviation amount of data A and C is compared by signal processing circuit, if exceed preset threshold, then determine that plastic deformation occurs to the service life of cabin body, and safety warning is triggered simultaneously;This life monitoring method can monitor the material fatigue of cabin body in real time, and can determine the plastic deformation of cabin body and trigger safety warning, timely guarantee the life safety of operator and patient in cabin.

Description

Technical Field

[0001] This invention relates to the field of rigid hyperbaric oxygen chamber technology, specifically to a method for monitoring the lifespan of a rigid hyperbaric oxygen chamber and a safety early warning device. Background Technology

[0002] Rigid hyperbaric oxygen chambers are primarily made of aluminum alloy and steel. Under pressure, the chamber expands to a certain extent and returns to its normal state after decompression; this process is elastic deformation. During use, the chamber undergoes hundreds or thousands of elastic deformations. This process leads to gradual fatigue of the metal. A major phenomenon of metal fatigue is plastic deformation, meaning that after the metal chamber is pressurized and then decompressed to normal pressure, the expansion does not return to its original state, and the chamber material loses its elasticity. The loss of elasticity weakens the material's pressure resistance. With subsequent pressurization, the deformation accumulates, which may cause the chamber to suddenly collapse, directly threatening the lives of the operators. Furthermore, plastic deformation is irreversible. Once it occurs, it indicates that the metal fatigue has reached a critical value. If there is no timely warning, at best, the chamber needs to be shut down and replaced, resulting in economic losses; at worst, the patient's treatment process is interrupted due to equipment failure, threatening the patient's life.

[0003] Currently, there is a lack of technical methods for real-time monitoring of material plastic deformation and early warning in the field of rigid hyperbaric oxygen chambers. Traditional detection techniques rely solely on pressure sensors or manual visual inspection to assess safety, and safety mechanisms are only passively triggered when the chamber breaks or is severely deformed. They cannot monitor the fatigue accumulation caused by repeated pressurization in real time. Therefore, there is an urgent need for a method for monitoring the lifespan of rigid hyperbaric oxygen chambers and a safety early warning device to solve the above problems. Summary of the Invention

[0004] In view of this, a method and safety early warning device for monitoring the life of a rigid hyperbaric oxygen chamber by real-time monitoring of whether the chamber material of the rigid hyperbaric oxygen chamber undergoes plastic deformation through resistance wire deformation are provided.

[0005] A method for monitoring the lifespan of a rigid hyperbaric oxygen chamber includes the following steps:

[0006] Step 1: Lay elastic resistance wires on the surface of the rigid hyperbaric oxygen chamber and use pressure sensors to identify the atmospheric pressure state of the rigid hyperbaric oxygen chamber. Monitor and record the initial resistance value of the rigid hyperbaric oxygen chamber under atmospheric pressure, and record it as data A.

[0007] Step 2: Identify the pressurization status of the rigid hyperbaric oxygen chamber using pressure sensors, monitor and record the deformation resistance value after pressurization, and denot it as data B;

[0008] Step 3: Reduce the pressure to normal pressure. Use a pressure sensor to identify the normal pressure state, monitor and record the resistance recovery data again, and denot it as data C.

[0009] Step 4: The deviation between data A and C is compared by the signal processing circuit. If it exceeds the preset threshold, it is determined that the cabin material has undergone plastic deformation and reached its service life, and a safety warning is triggered at the same time.

[0010] Furthermore, the elastic resistance wire is in the form of a tension spring structure, the overall outline of which is a flat, thin sheet-like tension spring. The lower surface of the entire tension spring along its length is in close contact with the surface of the rigid hyperbaric oxygen chamber, so that the deformation of the chamber surface can cause the deformation of the elastic resistance wire.

[0011] Furthermore, the elastic resistance wire extends in an S-shape or Z-shape along the principal stress direction of the deformation of the rigid hyperbaric oxygen chamber.

[0012] Furthermore, the elastic resistance wire is made of at least one of constantan alloy and nickel-chromium alloy.

[0013] Furthermore, the elastic resistance wire is disposed in the stress concentration area of ​​the cabin.

[0014] Furthermore, the data A, B, and C are detected and acquired in real time via a Wheatstone bridge, and the data A, B, and C are recorded and stored in a memory connected to the signal processing circuit.

[0015] Furthermore, the elastic resistance wire is arranged in a winding and tortuous manner around the stress concentration center of the cabin, and the overall extension direction of the elastic resistance wire is circular, with the center of the circle being the stress concentration center of the cabin.

[0016] Furthermore, the signal processing circuit is controlled by a microcontroller. The pressure sensor sends the signals of the pressurized state and the normal pressure state to the signal processing circuit. The process by which the signal processing circuit monitors the complete A, B, and C data corresponding to the normal pressure, pressurized, and normal pressure states sent by the pressure sensor is regarded as a complete working cycle. The signal processing circuit includes a counter and a signal comparator. The counter extracts the data A and data C within a complete working cycle. The preset threshold is used as the reference value of the signal comparator, and the deviation is converted into the reference value of the signal comparator. When the deviation exceeds the preset threshold, the signal comparator outputs an abnormal signal and triggers a safety warning.

[0017] Furthermore, an insulating layer is provided between the surface of the rigid hyperbaric oxygen chamber and the elastic resistance wire. The elastic resistance wire is made of metal foil. The metal foil and the insulating layer are first integrally formed, and then spring-shaped resistance wires are engraved or etched on the metal foil. The insulating layer is fixed to the surface of the chamber.

[0018] A safety warning device for a rigid hyperbaric oxygen chamber is disclosed, triggered when the chamber body undergoes plastic deformation. The device is configured to implement a method for monitoring the lifespan of a rigid hyperbaric oxygen chamber as described above. The device includes an elastic resistance wire, a pressure sensor, a resistance monitoring circuit, a signal processing circuit, a memory, and an emergency response device. The emergency response device is at least one of an audible and visual alarm, a chamber pressure locking module, and a remote signal transmitter. The elastic resistance wire is disposed on the surface of the rigid hyperbaric oxygen chamber body. The pressure sensor monitors the internal pressure in real time and feeds it back to the signal processing circuit. The resistance monitoring circuit monitors and collects resistance data during use at normal pressure, under pressure, and when returning to normal pressure, and feeds the resistance data back to the signal processing circuit. The emergency response device receives monitoring result signals or control signals from the signal processing circuit to perform corresponding warning operations. The memory stores the resistance data.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] First, this method for monitoring the lifespan of a rigid hyperbaric oxygen chamber uses an elastic resistance wire fixed to the surface of the chamber, allowing the wire to deform synchronously with the chamber. Based on the law of resistance, when the material and cross-sectional area of ​​the resistance wire remain constant, the length of the wire is proportional to its resistance value. Therefore, the degree of material deformation of the chamber can be converted into a quantifiable change in resistance value. By combining a Wheatstone bridge and signal processing circuit, the change in resistance value of the elastic resistance wire before and after pressurization is compared to detect plastic deformation. This solves the problem of real-time monitoring of chamber fatigue accumulation in this field, filling the gap in the field of rigid hyperbaric oxygen chambers where there is a lack of effective monitoring methods for internal material fatigue accumulation.

[0021] Secondly, when the deviation between data A and C exceeds the preset threshold, this safety warning device can immediately trigger an audible and visual alarm and lock the pressurization function of the chamber, thus ensuring the safety of operators and patients inside the chamber and improving the safety level of the hard hyperbaric oxygen chamber. Moreover, the material properties of the elastic resistance wire enable it to withstand the pressure changes of the chamber for a long time, so the safety warning device is a long-term monitoring device that can reach the life limit of the chamber. Attached Figure Description

[0022] Figure 1 This is a schematic diagram illustrating the steps of a method for monitoring the lifespan of a rigid hyperbaric oxygen chamber according to an embodiment of the present invention.

[0023] Figure 2 This is a structural schematic diagram of a method for monitoring the lifespan of a rigid hyperbaric oxygen chamber according to an embodiment of the present invention.

[0024] Figure 3This is a schematic diagram of the principle framework of a method for monitoring the lifespan of a rigid hyperbaric oxygen chamber according to an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the elastic resistance wire and insulation layer in a method for monitoring the lifespan of a rigid hyperbaric oxygen chamber according to an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the structure of a rigid hyperbaric oxygen chamber according to an embodiment of the present invention.

[0027] In the picture,

[0028] 1. Hard hyperbaric oxygen chamber; 2. Elastic resistance wire; 3. Pressure sensor; 4. Resistance monitoring circuit; 5. Signal processing circuit; 6. Memory; 7. Emergency response equipment; 8. Insulation layer; 9. First end of elastic resistance wire; 10. Second end of elastic resistance wire. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1 to 5 This illustration shows an embodiment of the present invention providing a method for monitoring the lifespan of a rigid hyperbaric oxygen chamber, comprising the following steps:

[0031] Step 1: Lay elastic resistance wires 2 on the surface of the rigid hyperbaric oxygen chamber 1, and use pressure sensor 3 to identify the normal pressure state of the rigid hyperbaric oxygen chamber 1. Monitor and record the initial resistance value of the rigid hyperbaric oxygen chamber 1 under normal pressure state, and record it as data A.

[0032] Step 2: Identify the pressurization status of the rigid hyperbaric oxygen chamber 1 using pressure sensor 3, monitor and record the deformation resistance value after pressurization, and record it as data B;

[0033] Step 3: Reduce pressure to normal pressure. Use pressure sensor 3 to identify the normal pressure state, monitor and record the resistance recovery data again, and record it as data C.

[0034] Step 4: The deviation between data A and C is compared by signal processing circuit 5. If it exceeds the preset threshold, it is determined that the cabin material has undergone plastic deformation and reached its service life, and a safety warning is triggered at the same time.

[0035] Specifically, the elastic resistance wire 2 is in the form of a tension spring structure. The overall outline of the tension spring structure is a flat, thin sheet-like tension spring. The lower surface of the entire tension spring along its length is in close contact with the surface of the rigid hyperbaric oxygen chamber 1, so that the deformation of the chamber surface can cause the deformation of the elastic resistance wire 2.

[0036] Specifically, the elastic resistance wire 2 extends in an S-shape or Z-shape along the principal stress direction of the deformation of the rigid hyperbaric oxygen chamber 1.

[0037] Specifically, the material of the elastic resistance wire 2 is selected from at least one of constantan alloy and nickel-chromium alloy.

[0038] In some specific embodiments, since constantan and nickel-chromium alloys are elastic metals, the length of their wires will increase when subjected to force, and return to their initial length after the force is removed. According to the law of resistance, Where R represents resistance, ρ represents resistivity determined by the material of the resistance wire, L represents the length of the resistance wire, and S represents the cross-sectional area of ​​the resistance wire. When the material and cross-sectional area of ​​the resistance wire remain constant, the length of the resistance wire is positively correlated with the resistance value. The degree of change in the length of the resistance wire, i.e., the degree of deformation, will cause the resistance value to change. Since the resistance wire is fixed to the cabin, the resistance wire and the cabin deform synchronously. Thus, the deformation of the cabin can cause the resistance value to change. More specifically, pressurizing the cabin will cause the cabin wall to expand, and the surface area will increase accordingly. The elastic resistance wire 2 laid on the surface of the cabin will be stretched, the physical size of the resistance wire will become longer, and the resistance value will become larger after the resistance wire becomes longer.

[0039] Specifically, the elastic resistance wire 2 is disposed in the stress concentration area of ​​the cabin. More specifically, the stress area may be the door joint, the edge of the observation window, or other weld areas.

[0040] In some specific embodiments, multiple sets of elastic resistance wires 2 can be set. These multiple sets of elastic resistance wires 2 can be evenly distributed in the high-stress area along the circumference of the rigid hyperbaric oxygen chamber 1. The electrical signals of each set of elastic resistance wires 2 are independent. As long as the data A and C of one set of elastic resistance wires 2 deviate from the preset threshold, the chamber will immediately trigger a safety warning device.

[0041] Specifically, the data A, B, and C are detected and acquired in real time through a Wheatstone bridge. More specifically, the two ends of the elastic resistance wire 2 are the first end 9 and the second end 10 of the elastic resistance wire, respectively. The first end 9 and the second end 10 of the elastic resistance wire are connected to the Wheatstone bridge. The data A, B, and C are recorded and stored through the memory 6. The memory 6 is connected to the signal processing circuit 5. More specifically, the memory can store the data A, B, and C for at least 1000 working cycles.

[0042] Specifically, the elastic resistance wire 2 is arranged in a tortuous manner around the stress concentration center of the cabin, and the overall extension direction of the elastic resistance wire 2 is circular, with the center of the circle being the stress concentration center of the cabin.

[0043] Specifically, the signal processing circuit 5 is controlled by a microcontroller. The pressure sensor 3 sends the signals of the pressurized state and the normal pressure state to the signal processing circuit 5. The process by which the signal processing circuit 5 monitors the complete A, B, and C data corresponding to the normal pressure, pressurized, and normal pressure states sent by the pressure sensor 3 is regarded as a complete working cycle. The signal processing circuit 5 includes a counter and a signal comparator. The counter extracts the data A and data C within a complete working cycle. The preset threshold is used as the reference value of the signal comparator, and the deviation is converted into the reference value of the signal comparator. When the deviation exceeds the preset threshold, the signal comparator outputs an abnormal signal and triggers a safety warning.

[0044] like Figure 3 As shown, in some specific embodiments, the rigid hyperbaric oxygen chamber 1 is typically a metal chamber made of iron, steel, or aluminum alloy. The elastic resistance wire 2 is a monitoring structure used to monitor and provide feedback on chamber deformation. The resistance change of the elastic resistance wire 2 during chamber deformation is detected using a Wheatstone bridge. After detection, the Wheatstone bridge converts the resistance change into an analog voltage value and outputs it to an AD converter. The AD converter converts the analog voltage value into a digital signal and sends it to a register. Simultaneously, the pressure sensor 3 transmits the corresponding pressurization / depressurization status signal to a counter. The register, based on the counter signal, transmits the digital signal from the AD converter—the data before and after pressurization—to the I / O control port. The I / O control port continues to transmit the data to a signal comparator. The signal comparator compares the data before and after pressurization. If the data match, a safety command is sent to actuator A (module 6, memory). If the data differ, an abnormal command is sent to actuator B (module 7, emergency response device). The electronic components shown in the figure are conventional functional devices directly applied to embodiments of the present invention.

[0045] Specifically, an insulating layer 8 is provided between the surface of the rigid hyperbaric oxygen chamber 1 and the elastic resistance wire 2. The elastic resistance wire 2 is made of metal foil. The metal foil and the insulating layer 8 are first integrally formed, and then spring-shaped resistance wires are engraved or etched on the metal foil. The insulating layer 8 is fixed to the surface of the chamber.

[0046] In some specific embodiments, the elastic resistance wire 2 is preferably a ring-shaped tension spring resistance wire. The specific structure of the ring-shaped tension spring resistance wire is that 8 sections of tension spring-style resistance wire extending in an S-shape or Z-shape are connected in a ring with the beginning and end connected to the ground to form a complete loop. The first end of the first section of tension spring-style resistance wire is the first end 9 of the elastic resistance wire, and the end of the last section of tension spring-style resistance wire is the second end 10 of the elastic resistance wire.

[0047] A safety warning device for a rigid hyperbaric oxygen chamber is disclosed, triggered when the chamber body of the rigid hyperbaric oxygen chamber 1 undergoes plastic deformation. The device is configured to implement the aforementioned method for monitoring the lifespan of the rigid hyperbaric oxygen chamber 1. The device includes an elastic resistance wire 2, a pressure sensor 3, a resistance monitoring circuit 4, a signal processing circuit 5, a memory 6, and an emergency response device 7. The emergency response device 7 is at least one of an audible and visual alarm, a chamber pressure locking module, and a remote signal transmitter. The elastic resistance wire 2 is disposed on the surface of the rigid hyperbaric oxygen chamber 1. The pressure sensor 3 monitors the internal pressure in real time and feeds it back to the signal processing circuit 5. The resistance monitoring circuit 4 monitors and collects resistance data during use at normal pressure, under pressure, and when restoring to normal pressure within the rigid hyperbaric oxygen chamber, and feeds the resistance data back to the signal processing circuit 5. The emergency response device 7 receives monitoring result signals or control signals from the signal processing circuit 5 to perform corresponding warning operations. The memory 6 stores the resistance data.

[0048] In some specific embodiments, when the signal processing circuit 5 detects plastic deformation triggering an early warning, the audible and visual alarm alerts the operator with a high-frequency buzzer (5Hz) and a red strobe light (3 times per second) to indicate equipment failure. The alarm is integrated into the top of the hatch and the control panel to ensure that the operator can detect it whether they are inside the cabin or in the monitoring room.

[0049] In some specific embodiments, when the signal processing circuit 5 detects a plastic deformation trigger warning, the cabin pressure locking module uses an electromagnetic valve linkage control system to automatically cut off the main electromagnetic valve of the pressurization pipeline (response time < 0.1 seconds) and force depressurization to atmospheric pressure.

[0050] In some specific embodiments, when the signal processing circuit 5 detects plastic deformation triggering an early warning, the remote signal transmitter pushes the alarm information (including cabin ID, anomaly type, anomaly time, and current pressure value) to the hospital's central control console and the mobile terminal (APP / SMS) of the management personnel in real time through 4G / Wi-Fi / satellite dual-mode communication. More specifically, the transmitter simultaneously sends location data and in-cabin camera footage to facilitate remote diagnosis. If no manual confirmation is received for 10 seconds, the preset emergency phone number is automatically called.

[0051] In a specific application example, the rigid hyperbaric oxygen chamber 1 has a planar chamber wall, and an elastic resistance wire 2 is mounted on this planar chamber wall. The overall outline of the elastic resistance wire 2 is preferably a ring around the perimeter. When the chamber is cylindrical or tank-shaped, the overall outline of the elastic resistance wire 2 is preferably a strip-like extension. Furthermore, in some preferred embodiments, for added safety, elastic resistance wires 2 are provided on the chamber walls of at least two chambers, preferably at locations with significant deformation or high pressure. Two or more elastic resistance wires 2 extend along the surface of the chamber wall and are respectively connected to a resistance monitoring circuit 4, and a signal processing circuit 5 monitors each elastic resistance wire 2 individually.

[0052] In summary, this method for monitoring the lifespan of a rigid hyperbaric oxygen chamber 1 employs an elastic resistance wire 2 fixed to the chamber surface, causing the wire to deform synchronously with the chamber. Based on the law of resistance, when the material and cross-sectional area of ​​the resistance wire remain constant, the length of the wire is proportional to its resistance value. Therefore, the degree of material deformation of the chamber can be converted into a quantifiable change in resistance value. By combining a Wheatstone bridge and signal processing circuit to compare the resistance changes of the elastic resistance wire 2 before and after pressurization, plastic deformation is detected. This solves the problem of real-time monitoring of chamber fatigue accumulation in the field, filling the gap in the lack of effective monitoring methods for internal fatigue accumulation in rigid hyperbaric oxygen chambers. Furthermore, when the deviation between data A and C exceeds a preset threshold, this safety warning device immediately triggers an audible and visual alarm and locks the chamber pressurization function, ensuring the safety of operators and patients within the chamber and improving the safety level of the rigid hyperbaric oxygen chamber 1. Moreover, the material properties of the elastic resistance wire 2 allow it to withstand long-term pressure changes within the chamber, making the safety warning device a long-term monitoring device that can monitor up to the chamber's lifespan limit.

[0053] It should be noted that the present invention is not limited to the above-described embodiments. Based on the inventive spirit of the present invention, those skilled in the art can make other changes, and these changes made in accordance with the inventive spirit of the present invention should be included within the scope of protection claimed by the present invention.

Claims

1. A method for monitoring the lifespan of a rigid hyperbaric oxygen chamber, characterized in that, Includes the following steps: Step 1: Elastic resistance wires are laid on the surface of the rigid hyperbaric oxygen chamber, and the atmospheric pressure state of the rigid hyperbaric oxygen chamber is identified by a pressure sensor. The initial resistance value of the rigid hyperbaric oxygen chamber under atmospheric pressure is monitored and recorded as data A. The elastic resistance wires are in the form of a tension spring structure. The overall outline of the tension spring structure is a flat and thin sheet-like tension spring. The lower surface of the entire tension spring along its length is in close contact with the surface of the rigid hyperbaric oxygen chamber, so that the deformation of the chamber surface can cause the deformation of the elastic resistance wires. Step 2: Identify the pressurization status of the rigid hyperbaric oxygen chamber using pressure sensors, monitor and record the deformation resistance value after pressurization, and denot it as data B; Step 3: Reduce the pressure to normal pressure. Use a pressure sensor to identify the normal pressure state, monitor and record the resistance recovery data again, and denot it as data C. Step 4: The deviation between data A and C is compared by the signal processing circuit. If it exceeds the preset threshold, it is determined that the cabin material has undergone plastic deformation and reached its service life, and a safety warning is triggered at the same time.

2. The method for monitoring the lifespan of a rigid hyperbaric oxygen chamber as described in claim 1, characterized in that, The elastic resistance wire extends in an S-shape or Z-shape along the direction of the principal stress of the rigid hyperbaric oxygen chamber.

3. The method for monitoring the lifespan of a rigid hyperbaric oxygen chamber as described in claim 1, characterized in that, The elastic resistance wire is made of at least one of constantan alloy and nickel-chromium alloy.

4. The method for monitoring the lifespan of a rigid hyperbaric oxygen chamber as described in claim 1, characterized in that, The elastic resistance wire is disposed in the stress concentration area of ​​the cabin.

5. The method for monitoring the lifespan of a rigid hyperbaric oxygen chamber as described in claim 1, characterized in that, The data A, B, and C are detected and acquired in real time through a Wheatstone bridge, and the data A, B, and C are recorded and saved through a memory connected to the signal processing circuit.

6. The method for monitoring the lifespan of a rigid hyperbaric oxygen chamber as described in claim 1, characterized in that, The elastic resistance wire is arranged in a winding and tortuous manner around the stress concentration center of the cabin body. The overall extension direction of the elastic resistance wire is circular, and the center of the circle is the stress concentration center of the cabin body.

7. The method for monitoring the lifespan of a rigid hyperbaric oxygen chamber as described in claim 1, characterized in that, The signal processing circuit is controlled by a microcontroller. The pressure sensor sends signals from the pressurized state and the normal pressure state to the signal processing circuit. The process by which the signal processing circuit monitors the complete A, B, and C data corresponding to the normal pressure, pressurized, and normal pressure states sent by the pressure sensor is considered as a complete working cycle. The signal processing circuit includes a counter and a signal comparator. The counter extracts data A and data C within a complete working cycle. The preset threshold is used as the reference value of the signal comparator, and the deviation is converted into a reference value of the signal comparator. When the deviation exceeds the preset threshold, the signal comparator outputs an abnormal signal and triggers a safety warning.

8. The method for monitoring the lifespan of a rigid hyperbaric oxygen chamber as described in claim 1, characterized in that, An insulating layer is provided between the surface of the rigid hyperbaric oxygen chamber and the elastic resistance wire. The elastic resistance wire is made of metal foil. The metal foil and the insulating layer are first integrally formed, and then spring-shaped resistance wires are engraved or etched on the metal foil. The insulating layer is fixed to the surface of the chamber.

9. A safety warning device for a rigid hyperbaric oxygen chamber, triggered when the chamber body undergoes plastic deformation, characterized in that, The safety warning device is configured to implement a method for monitoring the lifespan of a rigid hyperbaric oxygen chamber as described in any one of claims 1-8. The safety warning device includes an elastic resistance wire, a pressure sensor, a resistance monitoring circuit, a signal processing circuit, a memory, and an emergency response device. The emergency response device is at least one of an audible and visual alarm, a chamber pressure locking module, and a remote signal transmitter. The elastic resistance wire is laid on the surface of the rigid hyperbaric oxygen chamber. The pressure sensor is used to monitor the pressure inside the chamber in real time and feed it back to the signal processing circuit. The resistance monitoring circuit is used to monitor and collect resistance data during use at normal pressure, pressurized state, and when returning to normal pressure, and feeds the resistance data back to the signal processing circuit. The emergency response device is used to receive the monitoring result signal or control signal from the signal processing circuit to perform corresponding warning operations. The memory is used to store the resistance data.

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