Oxygen bin equipment and control system

Abstract

The invention provides oxygen cabin equipment and a control system, and relates to the technical field of oxygen cabins, and the oxygen cabin equipment comprises a cabin body which is provided with an observation door; the oxygen cabin main machine device comprises an oxygen generator and a main machine, the oxygen generator is electrically connected with the main machine, and the oxygen generator supplies oxygen to the cabin body through an oxygen inlet valve; the manual safety valve is used for performing manual pressure relief on the cabin body; the automatic constant pressure safety valve is installed in the cabin body, the automatic constant pressure safety valve comprises an automatic pressure detection device and a full-automatic pressure reduction and deflation device, the automatic pressure detection device is used for monitoring the pressure in the cabin body in real time, the full-automatic pressure reduction and deflation device is used for deflating the interior of the cabin body, and the automatic constant pressure safety valve is electrically connected with the host machine. Double safety guarantee is achieved through the manual safety valve and the automatic constant-pressure safety valve. Potential safety hazards caused by the fact that an existing oxygen cabin is not provided with a safety device are effectively avoided, and the safety of the oxygen cabin in the using process is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of oxygen chamber technology, specifically to oxygen chamber equipment and control systems. Background Technology

[0002] Oxygen chambers have been applied in various fields, including medical care and wellness. They are medical devices that allow patients to inhale oxygen in an environment with pressure higher than normal to improve oxygenation and promote tissue repair. Their core principle is to increase the oxygen concentration in the blood and tissues, accelerating cell metabolism and damage repair, making them suitable for the treatment and rehabilitation of various diseases.

[0003] Existing hyperbaric oxygen chambers, such as CN120478081A, a remotely monitored hyperbaric oxygen chamber device, have the following problems: the chamber body is not equipped with safety devices (such as safety valves), which affects the safety of use. Summary of the Invention

[0004] The present invention provides an oxygen chamber device and a control system to solve the technical problems mentioned in the background.

[0005] To solve the above-mentioned technical problems, the present invention discloses an oxygen chamber device, comprising: The cabin is equipped with an observation door; The oxygen chamber main unit includes an oxygen generator and a main unit, which are electrically connected. The oxygen generator supplies oxygen to the chamber through an oxygen inlet valve. A manual safety valve, used for manually depressurizing the cabin; An automatic constant pressure safety valve is installed in the cabin. The automatic constant pressure safety valve includes an automatic pressure detection device and a fully automatic pressure reduction and venting device. The automatic pressure detection device is used to monitor the pressure inside the cabin in real time, and the fully automatic pressure reduction and venting device is used to release air from the cabin. The automatic constant pressure safety valve is electrically connected to the main unit.

[0006] Preferably, the internal pressure of the chamber is 1.1 to 1.3 atmospheres; the internal temperature of the chamber is 2 to 5°C higher than the room temperature.

[0007] Preferably, the oxygen generator is a PSA oxygen generator, and the main unit is also electrically connected to a display screen; the manual safety valve can be adjusted bidirectionally both inside and outside the cabin.

[0008] Preferably, it also includes a temperature regulating device for regulating the temperature inside the cabin.

[0009] The present invention also discloses an oxygen chamber equipment control system, which is applied to the host of the oxygen chamber equipment and includes: a control module: used to centrally control the PSA oxygen generator, temperature regulation device and automatic constant pressure safety valve according to the parameter settings of the setting module, the mode selection of the oxygen therapy mode selection module and the timing status of the oxygen therapy timing module, and at the same time transmit relevant operating data to the display screen for display in real time.

[0010] Preferably, the setting module is used to set the pressure range inside the chamber, the oxygen therapy time, and the oxygen concentration range; The oxygen therapy mode selection module is used to select the oxygen therapy mode. The oxygen therapy timer module is used to keep track of the set oxygen therapy time. When the oxygen therapy time is reached, it will automatically prompt that the oxygen therapy has ended. Preferably, the oxygen chamber is pressurized by inputting compressed air into the oxygen chamber to bring the chamber to a set pressure; the chamber is also equipped with an oxygen concentration detection device.

[0011] Preferably, it also includes a pressure and oxygen concentration synergistic analysis and adjustment module, including: Data acquisition and processing module: used to acquire the latest historical pressure data and historical oxygen concentration data within the target time window after the cabin is initially stabilized at the set pressure and set oxygen concentration, and after each time the oxygen concentration trigger condition and / or pressure trigger condition is met. Module construction: Arrange historical pressure data in chronological order according to timestamps to construct a pressure dataset; arrange historical oxygen concentration data in chronological order according to timestamps to construct an oxygen concentration dataset; The pressure dataset is divided into multiple subsets (subset 1) according to a set time window; the oxygen concentration dataset is divided into multiple subsets (subset 2) according to a set time window. Rate analysis module: Calculates the pressure change rate of subset one and the oxygen concentration change rate of subset two, and determines the fluctuation of the pressure change rate and the fluctuation of the oxygen concentration change rate. Storage module: Stores mapping relationship one and mapping relationship two; mapping relationship one is "internal pressure range - internal oxygen concentration range - ideal oxygen flow rate - reference pressure change rate mapping relationship"; mapping relationship two is "internal pressure range - internal oxygen concentration range - ideal compressed air flow rate - reference oxygen concentration change rate mapping relationship". Collaborative Analysis Module: When the triggering parameter is pressure or oxygen concentration, it combines the storage module, pressure change rate fluctuation, and oxygen concentration change rate fluctuation to determine whether the triggering parameter is pressure or oxygen concentration. Decision module: Used in conjunction with the collaborative analysis module to determine the final trigger parameters and formulate different adjustment strategies based on different final trigger parameters.

[0012] Preferably, the collaborative analysis module includes: Analysis Unit 1: Used when the trigger parameter is pressure, and the corresponding triggering condition is met. Based on the pressure detection data and oxygen concentration detection data at the trigger time and the mapping relationship 2, the ideal compressed air charging flow rate corresponding to the trigger time is determined, and the predicted oxygen concentration after pressure regulation is determined based on the corresponding reference oxygen concentration change rate and ideal pressure regulation time; when the predicted oxygen concentration after pressure regulation meets the corresponding trigger conditions, and the fluctuation of the oxygen concentration change rate meets the corresponding fluctuation range, the current trigger parameters also include oxygen concentration. Analysis Unit 2: Used when the trigger parameter is oxygen concentration, and the corresponding triggering conditions are met. Based on the pressure detection data and oxygen concentration detection data at the trigger time and the mapping relationship 1, the ideal oxygenation flow rate corresponding to the trigger time is determined. Based on the corresponding reference pressure change rate and ideal oxygenation time, the predicted pressure after oxygenation is determined. When the predicted pressure after oxygenation meets the pressure triggering conditions and the fluctuation of the pressure change rate meets the corresponding fluctuation range, the current triggering parameters also include pressure.

[0013] Preferably, it also includes a pressure reduction and venting analysis module, which includes: Data acquisition unit: used to acquire historical pressure data within the latest venting fluctuation analysis time window when the automatic pressure reducing and venting device needs to work, and to construct a time-historical pressure change curve; the latest venting fluctuation analysis time window does not include any of the following: oxygen filling, compressed air filling, or venting. Division unit: Used to divide the time-historical pressure change curve into multiple pressure segments, where the ratio of the maximum slope to the minimum slope of each pressure segment is less than the division ratio. Fluctuation Analysis Unit: Used to analyze parameters within a pressure range and determine characteristic parameters of pressure fluctuations; Pressure Reduction Rate Determination Unit: Used to determine the target pressure reduction rate based on pressure fluctuation characteristic parameters and the current demand pressure reduction rate; Storage unit: Stores the mapping relationship between the pressure reduction rate range and the standard venting flow rate; Data acquisition unit: used to collect the density and viscosity of the mixed gas in the chamber and determine the flow correction coefficient when the automatic depressurization and venting device needs to work; Flow determination unit 1: When the automatic pressure reducing and venting device needs to work, the initial flow rate is determined based on the flow correction coefficient, the target pressure reduction rate, and the pressure reduction rate range-standard venting flow rate mapping relationship; Flow disturbance analysis unit: used to determine the flow disturbance coefficient by combining the initial flow rate, the density of the mixed gas inside the chamber, the pressure inside the chamber, and the ambient pressure; Flow determination unit two: used to determine the target venting flow rate by combining the initial flow rate and the flow disturbance coefficient; when the automatic pressure reducing and venting device is working, the control module controls the actual venting flow rate of the automatic pressure reducing and venting device to be the target venting flow rate.

[0014] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The system features dual safety protection with both a manual safety valve and an automatic constant-pressure safety valve. The manual safety valve allows for manual depressurization of the chamber, while the automatic constant-pressure safety valve monitors the chamber pressure in real time via an automatic pressure detection device. A fully automatic pressure-reducing and venting device automatically releases air from the chamber, effectively avoiding the safety hazards present in existing oxygen chambers that lack safety devices, thus ensuring safety during the use of the oxygen chamber.

[0016] The pressure inside the chamber can be stabilized at 1.1~1.3 atmospheres, and the temperature is 2~5℃ higher than room temperature. The temperature inside the chamber can be regulated by a temperature control device. At the same time, the oxygen generator is a PSA oxygen generator, which can accurately control the oxygen concentration, creating a precise and comfortable oxygen therapy environment for patients, which is conducive to improving the oxygen therapy effect.

[0017] The main motor is connected to the display screen, which can display relevant operating data in real time. The oxygen chamber equipment control system's setting module, oxygen therapy mode selection module, oxygen therapy timing module, and control module enable convenient setting of oxygen therapy parameters, flexible selection of oxygen therapy modes, precise timing of oxygen therapy time, and centralized control of the oxygen generator, temperature regulation device, and automatic constant pressure safety valve. It is easy to operate and highly efficient in monitoring, improving the intelligence level and user experience of the oxygen chamber. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the components of the present invention; Figure 2 This is a physical illustration of the present invention. Detailed Implementation

[0019] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0020] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0021] The present invention provides the following embodiments: Example 1: This embodiment of the invention provides an oxygen chamber device, such as... Figures 1-2 As shown, it includes: The cabin is equipped with an observation door; The oxygen chamber main unit includes an oxygen generator and a main unit, which are electrically connected. The oxygen generator supplies oxygen to the chamber through an oxygen inlet valve. A manual safety valve, used for manually depressurizing the cabin; An automatic constant pressure safety valve is installed in the cabin. The automatic constant pressure safety valve includes an automatic pressure detection device and a fully automatic pressure reduction and venting device. The automatic pressure detection device is used to monitor the pressure inside the cabin in real time, and the fully automatic pressure reduction and venting device is used to release air from the cabin. The automatic constant pressure safety valve is electrically connected to the main unit.

[0022] Preferably, the internal pressure of the chamber is 1.1 to 1.3 atmospheres; the internal temperature of the chamber is 2 to 5°C higher than the room temperature.

[0023] Preferably, the oxygen generator is a PSA oxygen generator, and the main unit is also electrically connected to a display screen; the manual safety valve can be adjusted bidirectionally both inside and outside the cabin.

[0024] Preferably, it also includes a temperature regulating device for regulating the temperature inside the cabin.

[0025] This invention also discloses an oxygen chamber equipment control system, which is applied to the host of the oxygen chamber equipment, comprising: Settings module: Used to set the pressure range inside the chamber, oxygen therapy time, and oxygen concentration range; Oxygen therapy mode selection module: Used to select the oxygen therapy mode; Oxygen therapy timer module: This module is used to keep track of the set oxygen therapy time and automatically prompts that the oxygen therapy has ended when the set time is reached. Control module: It is used to centrally control the PSA oxygen generator, temperature regulation device and automatic constant pressure safety valve according to the parameter settings of the setting module, the mode selection of the oxygen therapy mode selection module and the timing status of the oxygen therapy timing module, and at the same time transmit relevant operating data to the display screen for display in real time.

[0026] Oxygen therapy should not exceed 150 minutes, and a single session is recommended to last 90-120 minutes.

[0027] This hyperbaric oxygen chamber maintains a pressure environment of 1.1-1.3 atmospheres. When a person breathes in this chamber, according to Henry's Law ("the solubility of a gas in a liquid increases with increasing pressure"), a large amount of oxygen dissolves in the blood. This significantly increases the amount of oxygen dissolved in the blood, raises the partial pressure of oxygen in the blood, enhances the blood's oxygen diffusion capacity, and increases the effective diffusion radius of oxygen. This increases the oxygen content and storage capacity within human cells and tissues, thus achieving health benefits.

[0028] This invention effectively filters the air entering the cabin, ensuring that the air inside the cabin is fresh and clean.

[0029] The machine defaults to rapid pressurization mode upon startup, automatically switching to normal mode once the set pressure is reached. Rapid pressurization mode uses air to quickly bring the chamber to the set pressure.

[0030] The conventional pressurization mode involves pressurization and oxygenation simultaneously, maintaining a certain pressure in the cabin while continuously supplying oxygen.

[0031] Pure oxygen mode is a state that only supplies oxygen and does not pressurize. Decompression is automatic (and also automatically decompresses as needed during use). When the oxygen chamber is not in use, pressing the power off button will automatically start decompression to release the chamber pressure, or the machine will automatically shut down and release pressure after a timer expires.

[0032] The observation door is large, allowing a clear view from inside the cabin to the outside, and making it easy for people outside to keep an eye on the users inside, thus reducing any anxiety for first-time users.

[0033] The beneficial effects of the above technical solution are as follows: The system features dual safety protection with both a manual safety valve and an automatic constant-pressure safety valve. The manual safety valve allows for manual depressurization of the chamber, while the automatic constant-pressure safety valve monitors the chamber pressure in real time via an automatic pressure detection device. A fully automatic pressure-reducing and venting device automatically releases air from the chamber, effectively avoiding the safety hazards present in existing oxygen chambers that lack safety devices, thus ensuring safety during the use of the oxygen chamber.

[0034] The pressure inside the chamber can be stabilized at 1.1~1.3 atmospheres, and the temperature is 2~5℃ higher than room temperature. The temperature inside the chamber can be regulated by a temperature control device. At the same time, the oxygen generator is a PSA oxygen generator, which can accurately control the oxygen concentration, creating a precise and comfortable oxygen therapy environment for patients, which is conducive to improving the oxygen therapy effect.

[0035] The main motor is connected to the display screen, which can display relevant operating data in real time. The oxygen chamber equipment control system's setting module, oxygen therapy mode selection module, oxygen therapy timing module, and control module enable convenient setting of oxygen therapy parameters, flexible selection of oxygen therapy modes, precise timing of oxygen therapy time, and centralized control of the oxygen generator, temperature regulation device, and automatic constant pressure safety valve. It is easy to operate and highly efficient in monitoring, improving the intelligence level and user experience of the oxygen chamber.

[0036] Example 2, based on Example 1, further includes a pressure and oxygen concentration synergistic analysis and adjustment module, comprising: Data acquisition and processing module: After the chamber is first stabilized at the set pressure and set oxygen concentration, it acquires the latest historical pressure data and historical oxygen concentration data within the target time window (a specific time range, such as 3 min to 10 min, pre-set for analyzing the change patterns of pressure and oxygen concentration) each time the oxygen concentration trigger condition and / or pressure trigger condition is met. The permissible pressure range within the chamber (due to pressure fluctuations, this range is the set pressure ± permissible pressure fluctuation value) is: The permissible oxygen concentration range (because oxygen concentration fluctuates, this range is the set oxygen concentration ± the permissible oxygen concentration fluctuation value) is: ; Current pressure is The current oxygen concentration is ; The oxygen concentration trigger condition is: ; The pressure trigger condition is: ; The oxygen concentration allowable boundary proximity coefficient (with a value of 0.25 to 0.5); The pressure allowable boundary proximity coefficient (with a value of 0.25 to 0.5); This is the current oxygen concentration boundary proximity coefficient; This is the proximity coefficient to the current pressure boundary; Module construction: Arrange historical pressure data in chronological order according to timestamps to construct a pressure dataset; arrange historical oxygen concentration data in chronological order according to timestamps to construct an oxygen concentration dataset; The pressure dataset is divided into multiple subsets 1 according to a set time window (3 to 5 times the time interval between two oxygen concentration samplings); the oxygen concentration dataset is divided into multiple subsets 2 according to a set time window (3 to 5 times the time interval between two oxygen concentration samplings). Rate Analysis Module: Calculates the pressure change rate of subset 1 and the oxygen concentration change rate of subset 2, and determines the pressure change rate fluctuation (standard deviation of the pressure change rate of all subset 1) and the oxygen concentration change rate fluctuation (standard deviation of the oxygen concentration change rate of all subset 2). The current rate of pressure change in subset 1 is the average of the multiple rates of pressure change calculated in the current subset 1. The rate of pressure change of a single component in subset 1 is calculated as: (pressure at the next moment in subset 1 - pressure at the previous moment in subset 1) ÷ the time interval between the two adjacent moments. The current oxygen concentration change rate in subset one is the average of the multiple oxygen concentration change rates calculated in the current subset two. The single oxygen concentration change rate in subset two is calculated as: (oxygen concentration in subset two at the next moment - oxygen concentration in subset two at the previous moment) ÷ the time interval between the corresponding two adjacent moments. Storage module: Stores mapping relationship one and mapping relationship two; mapping relationship one is "internal pressure range - internal oxygen concentration range - ideal oxygen flow rate - reference pressure change rate mapping relationship"; mapping relationship two is "internal pressure range - internal oxygen concentration range - ideal compressed air flow rate - reference oxygen concentration change rate mapping relationship". Collaborative Analysis Module: When the triggering parameter is pressure or oxygen concentration, it combines the storage module, pressure change rate fluctuation, and oxygen concentration change rate fluctuation to determine whether the triggering parameter is pressure or oxygen concentration. Decision module: Used in conjunction with the collaborative analysis module to determine the final trigger parameters and formulate different adjustment strategies based on different final trigger parameters.

[0037] Obtaining mapping relationship one: Under standard operating conditions, select different chamber pressure ranges (divided into multiple ranges between 1.1 and 1.3 atmospheres) and oxygen concentration ranges (such as 80%–90%, 90%–100%, etc.), and set the ideal oxygenation time (such as 10 seconds to 2 minutes).

[0038] Parameter recording: Within each chamber pressure range and chamber oxygen concentration range, adjust the oxygen supply flow rate to ensure that the chamber oxygen concentration rises from the initial value (the oxygen concentration corresponding to the minimum allowable oxygen concentration boundary when oxygen supply is required) to the target value within an ideal oxygen supply time, at a rate that approaches the minimum allowable oxygen concentration boundary. Record the ideal oxygen flow rate (with the oxygen concentration change rate fluctuation meeting the requirements) that can achieve this process, and calculate the pressure change rate corresponding to the ideal oxygen flow rate as the reference pressure change rate; and calculate the corresponding oxygen concentration change rate (determined based on the actual oxygen concentration change rate of the ideal oxygen flow rate of this process) and mark it in the first mapping relationship.

[0039] A mapping table is constructed based on the chamber pressure range, the chamber oxygen concentration range, the corresponding ideal oxygen flow rate, and the rate of change of the baseline pressure.

[0040] Mapping Relationship 2: Under the same standard operating conditions, different chamber pressure and oxygen concentration ranges were selected. Within each chamber pressure range and chamber oxygen concentration range, adjust the compressed air flow rate to ensure that the chamber pressure, within the minimum permissible pressure boundary (the minimum permissible pressure boundary closest to the required pressurization point), rises from the initial value to the target value within an ideal pressure regulation time. Record the ideal compressed air flow rate that enables this process (the fluctuation of the compressed air flow rate meets the requirements), and calculate the oxygen concentration change rate corresponding to the ideal compressed air flow rate as the baseline oxygen concentration change rate; and calculate the corresponding pressure change rate (determined based on the actual pressure change rate corresponding to the ideal compressed air flow rate of this process) and mark it in the second mapping relationship.

[0041] A mapping table is constructed based on the cabin pressure range, cabin oxygen concentration range, and the corresponding ideal compressed air flow rate and reference oxygen concentration change rate.

[0042] The beneficial effects of the above technical solution are as follows: The data acquisition and processing module accurately triggers and acquires valid historical data, the construction module forms a time series dataset and reasonably divides the analysis subsets, the rate analysis module quantifies the changing characteristics of pressure and oxygen concentration, and the collaborative analysis and decision-making provide solid data support to avoid control deviations caused by data distortion or one-sided analysis.

[0043] The mapping relationship of the storage module provides the collaborative analysis module with an operating benchmark under different pressure and oxygen concentration ranges. The collaborative analysis module combines rate fluctuation to achieve intelligent multi-parameter judgment, and the decision-making module formulates adjustment strategies accordingly, forming a closed loop with the data acquisition, construction, and rate analysis modules. This multi-module collaborative linkage control enables oxygenation and pressure regulation operations to meet both preset flow requirements and dynamically adapt to fluctuations in the actual rate of change, achieving coordinated and stable control of pressure and oxygen concentration.

[0044] The ability to set pressure, oxygen concentration ranges, and trigger conditions clearly defines safety boundaries and enables early warning control, building a strong defense for system safety from the data acquisition stage. The experimental-level mapping relationships in the storage module ensure standardized and efficient operation. The intelligent judgment of the collaborative analysis and decision-making modules maximizes control efficiency while maintaining safety. This design achieves a balance between safety and efficiency. For example, when the pressure approaches the permissible range boundary, the system can quickly initiate analysis, combining mapping relationships and rate fluctuations to adjust to the target value with the optimal strategy while ensuring the pressure does not exceed limits. This ensures both the safety of the cabin environment and improves the operational efficiency of the oxygen therapy process.

[0045] Example 3, based on Example 2, Analysis Unit 1: Used when the trigger parameter is pressure, and the corresponding triggering condition is met. Based on the pressure detection data and oxygen concentration detection data at the trigger time and the mapping relationship 2, when pressure needs to be increased, the ideal compressed air injection flow rate corresponding to the trigger time is determined, and the predicted oxygen concentration after pressure regulation (oxygen concentration at the trigger time + ideal pressure regulation time × reference oxygen concentration change rate) is determined based on the corresponding reference oxygen concentration change rate and ideal pressure regulation time. This is used to determine that the current trigger parameters also include oxygen concentration when the predicted oxygen concentration after pressure regulation meets the corresponding trigger conditions and the fluctuation of the oxygen concentration change rate meets the corresponding fluctuation range. Based on the pressure detection data and oxygen concentration detection data at the trigger time and the mapping relationship 2, when pressure reduction is required, pressure reduction is achieved through the pressure reduction and venting device. Analysis Unit 2: Used when the trigger parameter is oxygen concentration, and the corresponding triggering conditions are met. Based on the pressure detection data and oxygen concentration detection data at the trigger time and the mapping relationship 1, when oxygenation is required, the ideal oxygenation flow rate corresponding to the trigger time is determined. Based on the corresponding reference pressure change rate and ideal oxygenation time, the predicted pressure after oxygenation (trigger pressure + ideal oxygenation time × reference pressure change rate) is determined. When the predicted pressure after oxygenation meets the pressure triggering conditions and the fluctuation of the pressure change rate meets the corresponding fluctuation range, the current triggering parameters also include pressure.

[0046] Ideal oxygenation time and ideal pressure regulation time can be set to be the same; The decision-making module is used to formulate the following strategies: 1. When the corresponding triggering condition is met, the triggering parameter is oxygen concentration. Furthermore, if the final triggering parameter is also oxygen concentration, and the predicted pressure after oxygenation does not meet the pressure triggering condition, oxygenation is performed based on the ideal oxygenation flow rate at the time of triggering until the oxygen concentration reaches the target value. ; 2. When the final trigger parameters are oxygen concentration and pressure, or when the corresponding trigger conditions are met, the trigger parameters are pressure and oxygen concentration. Oxygen is supplied based on the ideal oxygen supply flow rate at the time of triggering until the oxygen concentration reaches [a certain value]. ; Simultaneously, based on the predicted pressure (determined by the corresponding rate of change of the reference pressure mentioned above), the predicted oxygen concentration (determined by the corresponding rate of change of the reference oxygen concentration mentioned above), and the mapping relationship between the "in-cabin pressure range - in-cabin oxygen concentration range - ideal compressed air injection flow rate - reference oxygen concentration rate of change", the ideal compressed air injection flow rate corresponding to the predicted pressure and predicted oxygen concentration is determined, and compressed air is injected at the corresponding ideal compressed air injection flow rate until the pressure reaches the target value. ; 3. When the triggering parameter is pressure when the corresponding triggering condition is met, and the final triggering parameter is also pressure, and the predicted oxygen concentration after pressure adjustment does not meet the corresponding triggering condition, compressed air is charged until the pressure reaches the required level based on the ideal compressed air charging flow rate at the time of triggering. ; 4. Used when the trigger parameter is pressure when the corresponding trigger condition is met in the current instance: When the predicted oxygen concentration meets the corresponding triggering condition after pressure adjustment, but the fluctuation rate of oxygen concentration change does not meet the corresponding fluctuation range, compressed air is charged until the pressure reaches the ideal compressed air charging flow rate at the triggering time. ; During the compressed air filling process, the oxygen concentration boundary proximity coefficient is 1.2 times the minimum allowable proximity coefficient of the oxygen concentration boundary (which can be taken as 0.15 to 0.25). Based on the oxygen concentration and pressure in the chamber at this time and the mapping relationship between the chamber pressure range, the chamber oxygen concentration range, the ideal oxygen filling flow rate, and the reference pressure change rate, the corresponding ideal oxygen filling flow rate is determined. Oxygen is then filled with the corresponding ideal oxygen filling flow rate until the oxygen concentration boundary proximity coefficient is 1.5 to 3 times (a specific value can be set) the minimum allowable proximity coefficient of the oxygen concentration boundary. 5. Used when the trigger parameter is oxygen concentration when the corresponding trigger condition is met in the current instance: When the predicted pressure after oxygenation meets the pressure triggering condition, and the fluctuation of the pressure change rate does not meet the corresponding fluctuation range, oxygenation is carried out until the oxygen concentration reaches the target value based on the ideal oxygenation flow rate at the triggering time. .

[0047] During the oxygenation process, the pressure boundary proximity coefficient is 1.2 times the minimum allowable proximity coefficient of the pressure boundary. Based on the oxygen concentration and pressure in the chamber at this time and the mapping relationship between the pressure range in the chamber, the oxygen concentration range in the chamber, the ideal oxygenation flow rate, and the reference pressure change rate, the corresponding ideal compressed air injection flow rate is determined. The compressed air is then injected with the ideal compressed air injection flow rate until the pressure boundary proximity coefficient is 1.5 to 3 (a specific value can be set) times the minimum allowable proximity coefficient of the pressure boundary. The beneficial effects of the above technical solution are as follows: The collaborative analysis module achieves linked analysis of pressure and oxygen concentration through "mapping relationship + parameter prediction + fluctuation verification". For example, when pressure is triggered, it not only calculates the ideal compressed air flow rate, but also predicts the oxygen concentration after pressure adjustment and verifies the fluctuation of the oxygen concentration change rate. If the fluctuation does not meet the requirements, further adjustments are made to ensure that the oxygen concentration remains stable while the pressure is adjusted, avoiding the loss of control of another parameter due to the adjustment of a single parameter, and achieving coordinated and precise control of the two.

[0048] The comprehensive coverage of trigger scenarios and the multi-strategy adaptability decision module cover all scenarios such as "oxygen concentration only trigger", "pressure only trigger", "both trigger simultaneously", and "fluctuation not met". Each strategy is based on "ideal flow + boundary control" to ensure that there are targeted optimization strategies for different trigger scenarios.

[0049] The solution introduces "pressure change rate fluctuation" and "oxygen concentration change rate fluctuation" as stability indicators, which must be verified to ensure they meet the required range during both analysis and decision-making stages. For example, if the oxygen concentration meets the triggering conditions after pressure adjustment but the fluctuation does not meet the standard when analysis unit 1 is triggered by pressure, the decision-making module will first adjust the pressure and then further optimize the oxygen concentration stability by adjusting the oxygen flow rate. This ensures the stability of pressure and oxygen concentration during and after adjustment from the perspective of "change rate," preventing drastic fluctuations in parameters from affecting the cabin environment.

[0050] Early warning adjustment is achieved by using "boundary proximity coefficients" (such as 1.2 times the minimum allowable proximity coefficient, 1.5 to 3 times the minimum allowable proximity coefficient), which initiates adjustment before parameters approach the safety boundary, rather than waiting for parameters to exceed the limit before taking remedial measures.

[0051] Example 4, based on any one of Examples 1-3, further includes a pressure reduction and venting analysis module. This pressure reduction and venting analysis module (which executes the following every time the automatic pressure reduction and venting device needs to operate) includes: Data acquisition unit: used to acquire historical pressure data within the latest venting fluctuation analysis time window when the automatic pressure reducing and venting device needs to work (when pressure reduction is required), and construct a time-historical pressure change curve (the horizontal axis is time, and the vertical axis is historical pressure); no oxygen filling, compressed air filling, or venting has occurred within the latest venting fluctuation analysis time window; Division unit: Used to divide the time-historical pressure change curve into multiple pressure segments. The ratio of the maximum slope to the minimum slope of each pressure segment is less than the division ratio (reflecting that the pressure change rate of the pressure segment is relatively stable, with a value of 1 to 1.2). Fluctuation Analysis Unit: Used to analyze parameters within a pressure range and determine characteristic parameters of pressure fluctuations; Pressure fluctuation characteristic parameters include: the average pressure change rate of each pressure range and pressure fluctuation parameters; ; This represents the maximum average rate of pressure change across all pressure ranges. This represents the minimum average rate of pressure change across all pressure ranges. For pressure fluctuation parameters; For: | Median time of the corresponding pressure segment - The median time of the corresponding pressure period; for example, the time period is 8:00 to 8:20, and the median time is 8:10. Pressure Reduction Rate Determination Unit: Used to determine the target pressure reduction rate based on pressure fluctuation characteristic parameters and the current demand pressure reduction rate; The current demand reduction rate is determined by combining the target reduction time and the demand reduction pressure. The target decompression time is 30 seconds to 5 minutes, and the end of the working phase is 3 to 5 minutes; the pressure adjustment (usually fine adjustment) during the working process is 30 seconds to 3 minutes. Current demand pressure reduction rate = Current demand pressure reduction ÷ Current target pressure reduction time; Target rate of pressure reduction = Current demand rate of pressure reduction × (1 - E × unit time × correction factor); The correction coefficient is obtained through experimental calibration, with the following steps: Multiple experimental tests: Under standard operating conditions, simulate different pressure fluctuation scenarios in the oxygen chamber (achieved by artificially introducing small pressure disturbances or changing the venting flow rate). Record the pressure fluctuation parameter E and the corresponding optimal target depressurization rate for each experiment (the optimal depressurization rate is the best rate of pressure reduction that ensures a smooth and controllable pressure drop within the chamber); Data fitting: Substitute the experimental data into the formula and solve for the correction coefficient using linear fitting or nonlinear optimization algorithms (such as the least squares method); Verification and optimization: Substitute the calibrated correction coefficient into the actual venting process to verify the control accuracy of the target depressurization rate. If the pressure fluctuation still exceeds the allowable range (e.g., fluctuation > ±5% during the stabilization phase), iteratively adjust the correction coefficient until the accuracy requirements are met. The empirical range for the correction coefficient is 0.05–0.3. Storage unit: Stores the mapping relationship between the pressure reduction rate range and the standard venting flow rate; The stored depressurization rate range-standard venting flow rate mapping relationship can be determined based on calculation or experiment, as shown in the following experiment: The "decompression rate range - standard venting flow mapping relationship" is obtained by simulating different decompression rate ranges through multiple sets of experiments under standard operating conditions, recording the corresponding stable venting flow rate that can make the chamber pressure drop smoothly, establishing a correlation model between the two through data fitting, verifying the accuracy, and storing the corresponding relationship (which can form a mapping table) in the storage unit; where stable venting flow rate refers to the constant flow rate value that the venting device continuously outputs within a specific decompression rate range, which can make the chamber pressure drop smoothly at the expected rate (the rate fluctuation meets the requirements).

[0052] Data acquisition unit: Used to collect the density of the mixed gas inside the chamber when the automatic depressurization and venting device needs to operate. viscosity of mixed gas Determine the flow correction factor ; ; The external air pressure of the cabin; These are the gas pressure, gas density, and gas viscosity of the mixed gas under standard operating conditions, respectively. The air pressure inside the cabin. This refers to the external environmental pressure outside the cabin.

[0053] The parameters for standard operating conditions are typically based on the conventional baseline environment of a medical oxygen chamber; Before the oxygen chamber is put into use, the "decompression rate range - standard venting flow mapping relationship" is determined based on standard operating condition experiments, and the above correction coefficients are determined.

[0054] Flow determination unit 1: When the automatic pressure reducing and venting device needs to work, the initial flow rate is determined based on the flow correction coefficient, the target pressure reduction rate, and the pressure reduction rate range-standard venting flow rate mapping relationship; First, determine the target standard flow rate by combining the target pressure reduction rate and the pressure reduction rate range with the standard venting flow rate. Then the initial flow rate is calculated as: target standard flow rate × flow rate correction factor; Flow disturbance analysis unit: used to combine initial flow rate Density of mixed gas inside the cabin cabin pressure And environmental pressure (external environmental pressure) Determine the flow perturbation coefficient; Flow disturbance coefficient = ; To automatically reduce the valve port area of ​​the venting device (valve port area is a device calibration parameter); Flow determination unit two: used to determine the target venting flow rate by combining the initial flow rate and the flow disturbance coefficient; when the automatic pressure reducing and venting device is working, the control module controls the actual venting flow rate of the automatic pressure reducing and venting device to be the target venting flow rate.

[0055] Determining the time window for fluctuation analysis requires considering the pressure fluctuation cycle, equipment response characteristics, data validity, and engineering experience. The typical setting is 1 to 10 minutes; however, if any of the following occurs within this setting: oxygenation, compressed air filling, or venting, then the pressure data prior to that occurrence should be selected. The beneficial effects of the above technical solution are as follows: The data acquisition unit acquires interference-free historical pressure data, the segmentation unit divides the pressure curve into reasonable segments based on the slope ratio (1~1.2), and the fluctuation analysis unit accurately quantifies the degree of fluctuation between pressure segments using the pressure fluctuation parameter E. The decompression rate determination unit combines the pressure fluctuation characteristics and the required decompression rate (calculated from the decompression pressure and the target decompression time), and dynamically corrects it using a correction coefficient (experimentally calibrated, with a value of 0.05~0.3) to ensure that the target decompression rate meets the needs of oxygen therapy time and pressure adjustment, while also adapting to actual pressure fluctuations. This achieves precise control of the decompression rate and avoids pressure oscillations or oxygen therapy overruns caused by unreasonable rates.

[0056] The pressure reduction rate range-standard venting flow mapping relationship of the storage unit is stored after being fitted and verified by multiple sets of experiments under standard operating conditions, providing a benchmark for flow control. The data acquisition unit collects the density and viscosity of the mixed gas in the chamber and calculates the flow correction coefficient U through a formula, enabling the flow control to adapt to the actual gas characteristics in the chamber. The flow disturbance analysis unit combines the initial flow rate, the chamber pressure B, and the ambient pressure, and quantifies the flow disturbance through the flow disturbance coefficient formula. The flow determination unit further corrects the initial flow rate, taking into account the influence of valve area and pressure difference on the fluid flow pattern. The final determined target venting flow rate can effectively suppress flow disturbance and ensure the stability of fluid flow during venting, achieving full-dimensional flow adaptation from gas characteristics to flow disturbance.

[0057] Precise depressurization rate control and scientific venting flow control ensure a smooth and linear decrease in chamber pressure during venting, with pressure fluctuations strictly controlled within a safe range (e.g., fluctuations ≤ ±5% during the stabilization phase). This reduces the risk of malfunctions caused by abnormal pressure in the oxygen chamber equipment and guarantees safety during its use. Simultaneously, the stable pressure environment provides patients with a more comfortable oxygen therapy experience, which is beneficial for improving the effectiveness of oxygen therapy.

[0058] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An oxygen chamber device, characterized in that: include: The cabin is equipped with an observation door; The oxygen chamber main unit includes an oxygen generator and a main unit, which are electrically connected. The oxygen generator supplies oxygen to the chamber through an oxygen inlet valve. A manual safety valve, used for manually depressurizing the cabin; An automatic constant pressure safety valve is installed in the cabin. The automatic constant pressure safety valve includes an automatic pressure detection device and a fully automatic pressure reduction and venting device. The automatic pressure detection device is used to monitor the pressure inside the cabin in real time, and the fully automatic pressure reduction and venting device is used to release air from the cabin. The automatic constant pressure safety valve is electrically connected to the main unit.

2. The oxygen chamber equipment according to claim 1, characterized in that: The internal pressure of the chamber is 1.1 to 1.3 atmospheres; the internal temperature of the chamber is 2 to 5°C higher than the room temperature.

3. The oxygen chamber equipment according to claim 1, characterized in that: The oxygen generator is a PSA oxygen generator, and the main unit is also electrically connected to a display screen; the manual safety valve can be adjusted bidirectionally both inside and outside the cabin.

4. The oxygen chamber equipment according to claim 1, characterized in that: It also includes a temperature control device for regulating the temperature inside the cabin.

5. An oxygen chamber equipment control system, applied to the main unit of the oxygen chamber equipment as described in any one of claims 1-4, characterized in that: Includes: Control module: used to centrally control the PSA oxygen generator, temperature control device and automatic constant pressure safety valve according to the parameter settings of the setting module, the mode selection of the oxygen therapy mode selection module and the timing status of the oxygen therapy timing module, and at the same time transmit relevant operating data to the display screen for display in real time.

6. The oxygen chamber equipment control system according to claim 5, characterized in that: The settings module is used to set the pressure range, oxygen therapy time, and oxygen concentration range inside the chamber. The oxygen therapy mode selection module is used to select the oxygen therapy mode. The oxygen therapy timer module is used to keep track of the set oxygen therapy time. When the oxygen therapy time is reached, it will automatically prompt that the oxygen therapy has ended.

7. The oxygen chamber equipment control system according to claim 5, characterized in that: The oxygen chamber is pressurized by inputting compressed air into it to reach a set pressure; an oxygen concentration detection device is also installed inside the chamber.

8. The oxygen chamber equipment control system according to claim 7, characterized in that: It also includes a pressure and oxygen concentration co-analysis and adjustment module: including: Data acquisition and processing module: used to acquire the latest historical pressure data and historical oxygen concentration data within the target time window after the cabin is initially stabilized at the set pressure and set oxygen concentration, and after each time the oxygen concentration trigger condition and / or pressure trigger condition is met. Module construction: Arrange historical pressure data in chronological order according to timestamps to construct a pressure dataset; arrange historical oxygen concentration data in chronological order according to timestamps to construct an oxygen concentration dataset; The pressure dataset is divided into multiple subsets (subset 1) according to a set time window; the oxygen concentration dataset is divided into multiple subsets (subset 2) according to a set time window. Rate analysis module: Calculates the pressure change rate of subset one and the oxygen concentration change rate of subset two, and determines the fluctuation of the pressure change rate and the fluctuation of the oxygen concentration change rate. Storage module: Stores mapping relationship one and mapping relationship two; mapping relationship one is "internal pressure range - internal oxygen concentration range - ideal oxygen flow rate - reference pressure change rate mapping relationship"; mapping relationship two is "internal pressure range - internal oxygen concentration range - ideal compressed air flow rate - reference oxygen concentration change rate mapping relationship". Collaborative Analysis Module: When the triggering parameter is pressure or oxygen concentration, it combines the storage module, pressure change rate fluctuation, and oxygen concentration change rate fluctuation to determine whether the triggering parameter is pressure or oxygen concentration. Decision module: Used in conjunction with the collaborative analysis module to determine the final trigger parameters and formulate different adjustment strategies based on different final trigger parameters.

9. The oxygen chamber equipment control system according to claim 8, characterized in that: The collaborative analysis module includes: Analysis Unit 1: Used when the trigger parameter is pressure, and the corresponding triggering condition is met. Based on the pressure detection data and oxygen concentration detection data at the trigger time and the mapping relationship 2, when pressure needs to be increased, the ideal compressed air injection flow rate corresponding to the trigger time is determined, and the predicted oxygen concentration after pressure regulation is determined based on the corresponding reference oxygen concentration change rate and ideal pressure regulation time; when the predicted oxygen concentration after pressure regulation meets the corresponding trigger conditions and the fluctuation of the oxygen concentration change rate meets the corresponding fluctuation range, the current trigger parameters also include oxygen concentration. Analysis Unit 2: Used when the trigger parameter is oxygen concentration, and the corresponding triggering conditions are met. Based on the pressure detection data and oxygen concentration detection data at the trigger time and the mapping relationship 1, when oxygenation is required, the ideal oxygenation flow rate corresponding to the trigger time is determined, and the predicted pressure after oxygenation is determined based on the corresponding baseline pressure change rate and ideal oxygenation time; when the predicted pressure after oxygenation meets the pressure triggering conditions and the pressure change rate fluctuation meets the corresponding fluctuation range, the current triggering parameters also include pressure.

10. The oxygen chamber equipment control system according to claim 5, characterized in that: It also includes a decompression and venting analysis module, which includes: Data acquisition unit: used to acquire historical pressure data within the latest venting fluctuation analysis time window when the automatic pressure reducing and venting device needs to work, and to construct a time-historical pressure change curve; the latest venting fluctuation analysis time window does not include any of the following: oxygen filling, compressed air filling, or venting. Division unit: Used to divide the time-historical pressure change curve into multiple pressure segments, where the ratio of the maximum slope to the minimum slope of each pressure segment is less than the division ratio. Fluctuation Analysis Unit: Used to analyze parameters within a pressure range and determine characteristic parameters of pressure fluctuations; Pressure Reduction Rate Determination Unit: Used to determine the target pressure reduction rate based on pressure fluctuation characteristic parameters and the current demand pressure reduction rate; Storage unit: Stores the mapping relationship between the pressure reduction rate range and the standard venting flow rate; Data acquisition unit: used to collect the density and viscosity of the mixed gas in the chamber and determine the flow correction coefficient when the automatic depressurization and venting device needs to work; Flow determination unit 1: When the automatic pressure reducing and venting device needs to work, the initial flow rate is determined based on the flow correction coefficient, the target pressure reduction rate, and the pressure reduction rate range-standard venting flow rate mapping relationship; Flow disturbance analysis unit: used to determine the flow disturbance coefficient by combining the initial flow rate, the density of the mixed gas inside the chamber, the pressure inside the chamber, and the ambient pressure; Flow determination unit two: used to determine the target venting flow rate by combining the initial flow rate and the flow disturbance coefficient; when the automatic pressure reducing and venting device is working, the control module controls the actual venting flow rate of the automatic pressure reducing and venting device to be the target venting flow rate.

Images