Method for controlling oxygen concentration of plateau oxygen generator based on equivalent altitude

Abstract

The invention discloses a plateau oxygen generator oxygen concentration control method based on an equivalent altitude. The method comprises the following steps: acquiring a current oxygen concentration and an actual altitude value; an equivalent altitude value corresponding to the current breathing environment is calculated based on an equivalent altitude calculation model, the model is equivalent altitude = k * log (P / O2 value) + AAsvalue, k is an atmospheric elevation constant, and P is a standard sea level oxygen concentration; and displaying the equivalent altitude value and providing visual altitude scale display. The plateau oxygen supply control system supports selection of various plateau adaptation modes including the rapid plateau entering mode, the short plateau living mode and the long plateau living mode, precise, personalized and safe control over plateau oxygen supply is achieved, and the adaptation effect and safety of plateau oxygen generation are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of high-altitude oxygen generation equipment technology, specifically to a method for controlling oxygen concentration in a high-altitude oxygen generator based on equivalent altitude. Background Technology

[0002] With the economic and social development of plateau regions, vehicles, as the primary means of transportation, are used increasingly frequently. However, as altitude increases, atmospheric pressure and the partial pressure of oxygen in the air decrease significantly, easily leading to acute altitude sickness among drivers and passengers entering plateau areas. In severe cases, this can even cause life-threatening conditions such as pulmonary edema and cerebral edema, seriously affecting driving safety and personnel health. People who rush to plateaus are prone to altitude sickness. Statistics show that the incidence of altitude sickness is 25%–43% among travelers at altitudes of 2000–4300m, and 56% among railway construction workers at altitudes of 3500–5000m. Furthermore, atmospheric pressure and oxygen partial pressure decrease with increasing altitude in plateau regions, leading to oxygen deficiency challenges for those entering the area. According to international standard atmospheric models, for every 1000 meters increase in altitude, atmospheric pressure decreases by approximately 11.5%, and the partial pressure of oxygen in the air decreases accordingly. This environmental change triggers a series of physiological responses in the human body, including decreased blood oxygen saturation, increased heart rate, and increased respiratory rate. In severe cases, it can lead to acute mountain sickness (AMS), high-altitude pulmonary edema (HAPE), and high-altitude cerebral edema (HACE). As an important life support device, high-altitude oxygen concentrators provide an oxygen-rich environment for people in high-altitude areas, alleviating hypoxia symptoms and promoting altitude acclimatization. Currently, high-altitude oxygen concentrators primarily improve the user's respiratory environment by increasing the concentration of output oxygen.

[0003] The existing high-altitude oxygen generation and control technologies have the following problems: Traditional oxygen concentrator control methods neglect the significant impact of actual altitude on oxygen demand. The physiological effects of requiring a 28% oxygen concentration at 3000 meters altitude differ significantly from those requiring the same concentration at 5000 meters altitude, but current technology has failed to establish a precise quantitative relationship between altitude and oxygen demand. Users often rely on subjective feelings when selecting oxygen concentrations, lacking scientific basis.

[0004] Individual tolerance to high-altitude hypoxia varies significantly, influenced by factors such as age, health status, duration of stay at high altitude, and blood oxygen saturation. Current technologies fail to consider individual differences among users and cannot provide suitable personalized oxygen supply solutions for special populations such as the elderly, children, and those with underlying medical conditions.

[0005] In existing technologies, oxygen concentrators generally lack upper limits on the output oxygen concentration and gradual adjustment mechanisms, which may pose safety risks to users due to improper operation. Especially in high-altitude environments, users may blindly increase the oxygen concentration because the symptoms of hypoxia are not significantly relieved, without effective safety protection.

[0006] my country's "Technical Specifications for Oxygen Generators for High-Altitude Environments" clearly requires that high-altitude oxygen generation equipment should be adaptable to different altitude environments and provide safe and effective oxygen supply services. There is an urgent need within the industry for high-altitude oxygen generation technologies that can achieve precise control, personalized adaptation, and safety and reliability. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention proposes a method for controlling oxygen concentration in high-altitude oxygen generators based on equivalent altitude, aiming to provide a precise, personalized, safe, and reliable high-altitude oxygen generation technology.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: This application provides a method for controlling oxygen concentration in a high-altitude oxygen generator based on equivalent altitude, comprising the following steps: Step S1: Obtain the current atmospheric oxygen concentration detection value O2_value and the user's current actual altitude value Asl_value; Step S2: Based on a preset equivalent altitude calculation model, calculate the equivalent altitude value corresponding to the current breathing environment. The calculation model is as follows: Equivalent elevation Asl_target = k log(P0 / O2_value)+Asl_value, where k is the atmospheric elevation constant and P0 is the standard sea level oxygen concentration; Step S3: Receive and display the calculated equivalent altitude, and at the same time provide the actual altitude display, mapping different equivalent altitude ranges and actual altitude ranges to different display positions on the user interface; Step S4: Match the target oxygen concentration value O2_target with the current actual altitude value Asl_value and a pre-set database; Step S5: Control the oxygen generator actuator to adjust the oxygen concentration output until the target oxygen concentration value O2_target is reached.

[0009] Preferably, in step S3, mapping different equivalent altitude ranges and actual altitude ranges to different display positions on the user interface is specifically implemented as follows: dividing the actual altitude value into multiple altitude intervals: >5000 meters, 3000-5000 meters, 1500-3000 meters, 800-1500 meters, 500-800 meters, and ≤500 meters; Each actual altitude range corresponds to a different preset display position in the user interface. At the same time, each equivalent altitude range corresponding to each actual altitude range corresponds to a different preset display position in the user interface, thus achieving a visual display.

[0010] Preferably, the database pre-set in step S4 includes the correspondence between the current actual altitude, the equivalent altitude, and the target oxygen concentration.

[0011] Preferably, before step S4, a high-altitude acclimatization mode selection step S0 is included: receiving the high-altitude acclimatization mode selected by the user, wherein the mode includes rapid high-altitude ascent mode, short-term high-altitude stay mode, and long-term high-altitude stay mode.

[0012] Preferably, in step S2, the target equivalent altitude is further adjusted by an age correction factor based on the user's age: Asl_adj = Asl_target [1 + α [(A-A0)], where α is the age correction coefficient, A is the user's age, and A0 is the reference age; the target equivalent altitude is dynamically adjusted according to the blood oxygen saturation SpO2: when SpO2<85%, the target equivalent altitude is temporarily reduced by 10%-20%; when SpO2>95%, the target equivalent altitude can be gradually increased by 5%-10%.

[0013] Preferably, a safety limit verification step S4' is further included between step S4 and step S5: the calculated target oxygen concentration value O2_target is verified for safety limits, including: (1) absolute safety limit verification: ensuring that the target oxygen concentration does not exceed 40%; (2) relative safety limit verification: ensuring that the single adjustment range does not exceed 30% of the current oxygen concentration; (3) time safety limit verification: ensuring that the oxygen concentration does not exceed 28.7% within 24 hours; when the target value exceeds any safety limit, it is automatically adjusted to the closest safe value within the safe range and a warning message is issued.

[0014] Preferably, the data displayed in step S3 includes: (1) Main display interface: Real-time display of current equivalent altitude value and actual altitude value; (2) Visualized altitude scale display: The equivalent altitude is mapped to a dynamic position indicator on the screen; (3) Historical trend curve display: Display the equivalent altitude change trend on a time axis, and support viewing at different time scales such as hour, day, and week; (4) Mode status indicator display: Clearly displays the current high altitude adaptation mode and the remaining time for mode adjustment.

[0015] Preferably, it also includes an intelligent mode switching step S6: automatically recommending or switching the high altitude adaptation mode based on the user's physiological response data, including: automatically switching to a more conservative control mode when the user is detected to have acute altitude sickness symptoms; If the user's blood oxygen saturation remains stable within the ideal range for more than 12 hours, it is recommended to switch to the next stage mode; the mode control parameters will be automatically adjusted based on the user's cumulative stay time in high-altitude environments.

[0016] Preferably, the formula for calculating the target oxygen concentration in step S5 is an enhanced two-parameter model: O2_target = P0 / exp[(Asl_target - Asl_value) / (k β)], where β is the mode adjustment coefficient, and the specific value is determined according to the selected plateau adaptation mode: rapid plateau adaptation mode: β value is 0.8-0.9; short plateau stay mode: β value is 1.0; long plateau stay mode: β value is 1.1-1.2.

[0017] This application provides a method for controlling oxygen concentration in a high-altitude oxygen generator based on equivalent altitude. The method includes: acquiring the current oxygen concentration and actual altitude; calculating the equivalent altitude corresponding to the current breathing environment based on an equivalent altitude calculation model, where the model is: Equivalent Altitude = k × log(P0 / O2_value) + Asl_value, where k is the atmospheric elevation constant and P0 is the standard sea-level oxygen concentration; displaying the equivalent altitude value and providing the actual altitude value. This invention supports multiple high-altitude adaptation modes, including rapid high-altitude ascent mode, short-term high-altitude stay mode, and long-term high-altitude stay mode, and personalizes these modes by incorporating physiological parameters such as user age and blood oxygen saturation. The method also includes safety limit verification, ensuring that the target oxygen concentration does not exceed 40%, the single adjustment does not exceed 30% of the current oxygen concentration, and the cumulative decrease in equivalent altitude within 24 hours does not exceed 1500 meters. Precise control is achieved through an enhanced dual-parameter model, where the mode adjustment coefficient β is dynamically adjusted according to the selected mode. This invention achieves precise, personalized, and safe control of high-altitude oxygen supply, significantly improving the adaptation effect and safety of high-altitude oxygen generation. Attached Figure Description

[0018] Figure 1 The present invention provides a flowchart of a method for controlling oxygen concentration in a plateau oxygen generator based on equivalent altitude.

[0019] Figure 2 This invention provides a schematic diagram of an oxygen concentration system for a plateau oxygen generator based on equivalent altitude. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1 Figure 1 A flowchart of an oxygen concentration control method for a plateau oxygen generator based on equivalent altitude is provided for this invention, as shown below. Figure 1 As shown, the oxygen concentration control method for high-altitude oxygen generators based on equivalent altitude includes the following steps: Step S1: Obtain the current atmospheric oxygen concentration detection value O2_value and the user's current actual altitude value Asl_value; Step S2: Based on a preset equivalent altitude calculation model, calculate the equivalent altitude value corresponding to the current breathing environment. The calculation model is as follows: Equivalent elevation Asl_target = k log(P0 / O2_value)+Asl_value, where k is the atmospheric elevation constant and P0 is the standard sea level oxygen concentration; Step S3: Receive and display the calculated equivalent altitude, and at the same time provide the actual altitude display, mapping different equivalent altitude ranges and actual altitude ranges to different display positions on the user interface; Step S4: Match the target oxygen concentration value O2_target with the current actual altitude value Asl_value and a pre-set database; Step S5: Control the oxygen generator actuator to adjust the oxygen concentration output until the target oxygen concentration value O2_target is reached.

[0022] In this embodiment, step S3, which maps different equivalent altitude ranges and actual altitude ranges to different display positions in the user interface, is specifically implemented as follows: the actual altitude value is divided into multiple altitude ranges: >5000 meters, 3000-5000 meters, 1500-3000 meters, 800-1500 meters, 500-800 meters, and ≤500 meters; each actual altitude range corresponds to a different preset display position in the user interface, and at the same time, each equivalent altitude range corresponding to each actual altitude range corresponds to a different preset display position in the user interface, thereby achieving visual display.

[0023] Before step S4, there is a step S0 for selecting an altitude acclimatization mode: receiving the user's selected altitude acclimatization mode, which includes rapid altitude ascent mode, short-term altitude stay mode, and long-term altitude stay mode. In this embodiment, the database preset in step S4 includes the correspondence between the current actual altitude, equivalent altitude, and target oxygen concentration.

[0024] The database preset in step S4 is shown in the table below: In this embodiment, step S2 further includes adjusting the target equivalent altitude using an age correction factor based on the user's age: Asl_adj = Asl_target [1 + α [(A-A0)], where α is the age correction coefficient, A is the user's age, and A0 is the reference age; the target equivalent altitude is dynamically adjusted according to the blood oxygen saturation SpO2: when SpO2<85%, the target equivalent altitude is temporarily reduced by 10%-20%; when SpO2>95%, the target equivalent altitude can be gradually increased by 5%-10%.

[0025] In step S3, the following can also be displayed: (1) Main display interface display: real-time display of the current equivalent altitude value and the actual altitude value; (2) Visual altitude scale display: mapping the equivalent altitude to a dynamic position indicator on the screen; (3) Historical trend curve display: displaying the equivalent altitude change trend on a time axis, supporting viewing at different time scales such as hour, day, and week; (4) Mode status indicator display: clearly displaying the currently running plateau adaptation mode and the remaining time for mode adjustment.

[0026] Between steps S4 and S5, there is also a safety limit verification step S4': This involves verifying the calculated target oxygen concentration value O2_target against safety limits, including: (1) Absolute safety limit verification: Ensure that the target oxygen concentration does not exceed 40%; (2) Relative safety limit verification: Ensure that the adjustment range in a single instance does not exceed 30% of the current oxygen concentration; (3) Time safety limit verification: Ensure that the oxygen concentration does not exceed 28.7% within 24 hours; When the target value exceeds any safety limit, it will automatically adjust to the closest safe value within the safe range and issue a warning message.

[0027] It also includes intelligent mode switching step S6: automatically recommending or switching the high-altitude adaptation mode based on the user's physiological response data, including: automatically switching to a more conservative control mode when the user is detected to have acute altitude sickness symptoms; recommending to switch to the next stage mode when the user's blood oxygen saturation has been stable within the ideal range for more than 12 hours; and automatically adjusting the mode control parameters according to the user's cumulative stay time in the high-altitude environment.

[0028] The formula for calculating the target oxygen concentration in step S5 is an enhanced two-parameter model: O2_target = P0 / exp[(Asl_target-Asl_value) / (k β)], where β is the mode adjustment coefficient, and the specific value is determined according to the selected plateau adaptation mode: rapid plateau adaptation mode: β value is 0.8-0.9; short plateau stay mode: β value is 1.0; long plateau stay mode: β value is 1.1-1.2.

[0029] Example 2 Figure 2 A schematic diagram of an oxygen concentration system for a plateau oxygen generator based on equivalent altitude is provided for this invention, as shown below. Figure 2 As shown, the system consists of four main modules: an environmental sensing unit 200, a control unit 100, an oxygen generator 300, and a display and control terminal 400. These modules work together to achieve environmental monitoring, oxygen supply, and human-machine interaction.

[0030] The environmental sensing unit 200 is used to collect environmental data in real time. This unit accurately captures external environmental information through three types of sensors. Among them, the oxygen concentration sensor 201 is used to monitor the oxygen content of the surrounding air, providing a key reference for the oxygen generator's "oxygen supply strategy". The atmospheric pressure sensor 202 is used to sense changes in environmental air pressure (such as in high-altitude or high-altitude scenarios) to help determine the dynamic adjustment of oxygen demand. The Beidou satellite navigation system sensor 203 is used to locate the device's position and further optimize the oxygen supply logic by combining geographic information (such as altitude and regional environment).

[0031] The control unit 100 is used to execute the oxygen concentration control method of the oxygen generator provided in one embodiment. The control unit needs to receive multi-dimensional data from the environmental sensing unit, analyze it, and send instructions to the oxygen generator to realize closed-loop control from environmental data to intelligent decision-making and then to precise oxygen supply, so as to ensure the timeliness and safety of oxygen supply.

[0032] The oxygen concentrator 300, as the core oxygen supply execution module, is responsible for converting air into oxygen to meet the breathing needs in different scenarios. It includes two types of oxygen outlets: the nasal oxygen outlet 301 provides users with direct oxygen supply for breathing, which is suitable for scenarios such as medical treatment and high altitude where "active oxygen inhalation" is required; and the diffuse oxygen outlet 302 releases oxygen into the surrounding environment to achieve "passive oxygen inhalation" (such as in enclosed spaces and home oxygen therapy scenarios), thereby increasing the oxygen concentration in the environment.

[0033] The display and control terminal 400 is responsible for human-computer interaction and status feedback. It achieves "information display + user operation" through two types of devices: the display 401 presents real-time environmental data (such as oxygen concentration, air pressure, and location) and equipment status (such as oxygen generator operating mode and oxygen concentration), allowing users to intuitively understand the system's operation. The control terminal 402 supports users manually adjusting oxygen generator parameters (such as oxygen output and mode switching) or triggering specific functions (such as emergency oxygen supply mode), enhancing the system's user-friendliness and controllability.

[0034] This application provides a method for controlling oxygen concentration in a high-altitude oxygen concentrator based on equivalent altitude. The method includes: acquiring the current oxygen concentration and actual altitude; calculating the equivalent altitude corresponding to the current breathing environment based on an equivalent altitude calculation model, where the model is: Equivalent Altitude = k × log(P0 / O2_value) + Asl_value, where k is the atmospheric elevation constant and P0 is the standard sea-level oxygen concentration; displaying the equivalent altitude value and providing a visual altitude scale display; receiving the user-set target oxygen concentration value; calculating the target oxygen concentration value based on the target value and the actual altitude value; and controlling the oxygen concentrator to adjust the oxygen concentration output. This invention supports multiple high-altitude adaptation modes, including rapid high-altitude ascent mode, short-term high-altitude stay mode, and long-term high-altitude stay mode, and allows for personalized adjustments based on user age, blood oxygen saturation, and other physiological parameters. The method also includes safety limit verification to ensure that the target oxygen concentration does not exceed 40%, and the single adjustment range does not exceed 30% of the current oxygen concentration. Precise control is achieved through an enhanced two-parameter model, where the mode adjustment coefficient β is dynamically adjusted according to the selected mode. This invention enables precise, personalized, and safe control of oxygen supply at high altitudes, significantly improving the adaptability and safety of oxygen production at high altitudes.

[0035] It should be noted that the technical features in the above embodiments can be combined arbitrarily, and the resulting technical solutions all fall within the protection scope of this application. Furthermore, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for controlling oxygen concentration in a high-altitude oxygen generator based on equivalent altitude, characterized in that, Includes the following steps: Step S1: Obtain the current atmospheric oxygen concentration detection value O2_value and the user's current actual altitude value Asl_value; Step S2: Based on a preset equivalent altitude calculation model, calculate the equivalent altitude value corresponding to the current breathing environment. The calculation model is as follows: Equivalent elevation Asl_target = k log(P0 / O2_value)+Asl_value, where k is the atmospheric elevation constant and P0 is the standard sea level oxygen concentration; Step S3: Receive and display the calculated equivalent altitude, and at the same time provide the actual altitude display, mapping different equivalent altitude ranges and actual altitude ranges to different display positions on the user interface; Step S4: Match the target oxygen concentration value O2_target with the current actual altitude value Asl_value and a pre-set database; Step S5: Control the oxygen generator actuator to adjust the oxygen concentration output until the target oxygen concentration value O2_target is reached.

2. The method according to claim 1, characterized in that, The specific implementation of mapping different equivalent altitude ranges and actual altitude ranges to different display positions on the user interface in step S3 is as follows: The actual altitude values ​​are divided into several altitude ranges: >5000 meters, 3000-5000 meters, 1500-3000 meters, 800-1500 meters, 500-800 meters, and ≤500 meters. Each actual altitude range corresponds to a different preset display position in the user interface. At the same time, each equivalent altitude range corresponding to each actual altitude range corresponds to a different preset display position in the user interface, thus achieving a visual display.

3. The method according to claim 1, characterized in that, The database pre-set in step S4 includes the correspondence between the current actual altitude, the equivalent altitude, and the target oxygen concentration.

4. The method according to claim 3, characterized in that, Before step S4, there is also a high-altitude adaptation mode selection step S0: The system receives the user's selected high-altitude acclimatization mode, which includes rapid high-altitude ascent mode, short-term high-altitude stay mode, and long-term high-altitude stay mode.

5. The method according to claim 1, characterized in that, In step S2, the target equivalent altitude is further adjusted by an age correction factor based on the user's age. Asl_adj = Asl_target [1 + α [(A-A0)], where α is the age correction factor, A is the user's age, and A0 is the reference age; the target equivalent altitude is dynamically adjusted according to the blood oxygen saturation SpO2: when SpO2 < 85%, the target equivalent altitude is temporarily reduced by 10%-20%; when SpO2 > 95%, the target equivalent altitude can be gradually increased by 5%-10%.

6. The method according to claim 1, characterized in that, Between step S4 and step S5, there is also a security restriction verification step S4': Perform safety limit verification on the calculated target oxygen concentration value O2_target, including: (1) Absolute safety limit verification: Ensure that the target oxygen concentration does not exceed 40%; (2) Relative safety limit verification: Ensure that the adjustment range in a single instance does not exceed 30% of the current oxygen concentration; (3) Time safety limit verification: Ensure that the oxygen concentration does not exceed 28.7% within 24 hours; When the target value exceeds any safety limit, it will automatically adjust to the closest safe value within the safe range and issue a warning message.

7. The method according to claim 1, characterized in that, The data displayed in step S3 includes: (1) Main display interface: Real-time display of current equivalent altitude value and actual altitude value; (2) Visualized altitude scale display: The equivalent altitude is mapped to a dynamic position indicator on the screen; (3) Historical trend curve display: Display the equivalent altitude change trend on a time axis, and support viewing at different time scales such as hour, day, and week; (4) Mode status indicator display: Clearly displays the current high altitude adaptation mode and the remaining time for mode adjustment.

8. The method according to claim 4, characterized in that, It also includes the intelligent mode switching step S6: Automatically recommend or switch altitude acclimatization modes based on the user's physiological response data, including: When the system detects that a user is experiencing symptoms of acute altitude sickness, it automatically switches to a more conservative control mode. If a user's blood oxygen saturation remains stable within the ideal range for more than 12 hours, it is recommended to switch to the next stage mode. The system automatically adjusts the mode control parameters based on the user's cumulative time spent in high-altitude environments.

9. The method according to claim 4, characterized in that, The formula for calculating the target oxygen concentration in step S5 is an enhanced two-parameter model: O2_target = P0 / exp[(Asl_target-Asl_value) / (k β)], where β is the mode adjustment coefficient, and its specific value is determined according to the selected high-altitude adaptation mode: Rapid ascent to high altitude mode: β values ​​range from 0.8 to 0.9; Short-stay plateau model: β value is 1.0; Long-term high-altitude residence model: β values ​​range from 1.1 to 1.2.

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