An oxygen generation system and method

Abstract

An oxygen system comprises: a gas storage tank for storing oxygen; a jet port for jetting oxygen to a user; a pressure sensor arranged at the jet port for detecting pressure at the jet port; an oxygen delivery pipeline arranged between the jet port and the gas storage tank; a breathing sensor connected to the oxygen delivery pipeline through a bypass pipeline; an oxygen supply valve arranged on the oxygen delivery pipeline for conducting and blocking the oxygen delivery pipeline; a main control module configured to: before formal oxygen jetting, control the oxygen supply valve to conduct to make the gas storage tank deliver a set amount of oxygen to the jet port; in response to the pressure sensor detecting that the pressure at the jet port exceeds a set pressure threshold, control the oxygen supply valve to block the oxygen delivery pipeline to stop oxygen jetting; in response to the pressure sensor detecting that the pressure at the jet port does not exceed the set pressure threshold, control the oxygen supply valve to continue to conduct to formally jet oxygen; in response to the breathing sensor detecting that the user's exhalation ends, control the jet port to jet a set amount of oxygen after the user's exhalation ends and before the next inhalation.

Description

[0001] Case Analysis

[0002] This application is a divisional application of Chinese application filed on December 29, 2018, with application number 201880100288.6 and entitled "An Oxygen Generation System and Method". Technical Field

[0003] This application relates to the field of medical devices, and more particularly to an oxygen generation system and method. Background Technology

[0004] With the improvement of people's living standards and the increasing awareness of health needs, oxygen inhalation is gradually becoming a fashionable form of home healthcare. Home oxygen concentrators are mainly classified according to their working principles into electronic oxygen concentrators, molecular sieve oxygen concentrators, chemical reagent oxygen concentrators, and oxygen-enriched membrane oxygen concentrators. Molecular sieve oxygen concentrators are currently the only mature type that meets both international and national standards. Currently available oxygen concentrators, especially portable ones, still have many areas for improvement. Therefore, it is necessary to provide an improved oxygen generation system and method to give users a better experience. Summary of the Invention

[0005] One aspect of this application provides an oxygen generation system, comprising: a gas storage tank for storing oxygen; a jet nozzle for dispensing oxygen to a user; a pressure sensor disposed at the jet nozzle for detecting the pressure at the jet nozzle; an oxygen delivery pipeline disposed between the jet nozzle and the gas storage tank; a breathing sensor connected to the oxygen delivery pipeline via a bypass pipeline for detecting the user's breathing status; an oxygen supply valve disposed on the oxygen delivery pipeline for opening and closing the oxygen delivery pipeline; and a main control module for: controlling the oxygen supply valve to open before formal oxygen dispensing to allow the gas storage tank to dispensing oxygen. The gas tank delivers a set amount of oxygen to the nozzle; after the gas tank delivers the set amount of oxygen to the nozzle, in response to the pressure sensor detecting that the pressure at the nozzle exceeds a set pressure threshold, the oxygen supply valve is controlled to block the oxygen delivery pipeline to stop oxygen injection; in response to the pressure sensor detecting that the pressure at the nozzle does not exceed the set pressure threshold, the oxygen supply valve is controlled to continue to open for regular oxygen injection; in response to the breathing sensor detecting that the user's exhalation has ended, the nozzle is controlled to inject a set amount of oxygen after the user's exhalation ends and before the next inhalation.

[0006] In some embodiments, the information of the molecular sieve includes the molecular sieve's design life information, cumulative operating time, temperature information, operating status information, altitude information, and / or location information.

[0007] In some embodiments, the main control module is further configured to update the cumulative running time, temperature information, running status information, altitude information and / or location information, and write the updated molecular sieve information into the molecular sieve information unit, wherein the main control module updates the cumulative running time according to the single running time of each run of the molecular sieve.

[0008] In some embodiments, when the molecular sieve module leaves the factory, the molecular sieve information unit stores the official information of the molecular sieve, which includes a unique official identifier and / or other official information. The main control module is used to read the molecular sieve's identifier information and / or other information from the molecular sieve information unit. In response to at least one of the following situations, the main control module controls the oxygen generation system to stop operating and / or performs an alert operation: the molecular sieve's identifier information is not read; the read molecular sieve's identifier information does not match the unique official identifier; the read molecular sieve's identifier information matches the unique official identifier, but other information of the molecular sieve does not match the other official information.

[0009] In some embodiments, the molecular sieve information unit includes at least one of the following memories: electrically erasable programmable read / write memory, radio frequency memory, wireless memory, optical disk, and magnetic disk.

[0010] In some embodiments, the information of the molecular sieve is encrypted and then stored in the molecular sieve information unit.

[0011] In some embodiments, a two-position three-way valve is provided at the connection between the oxygen delivery pipeline and the bypass pipeline. The two-position three-way valve connects the air jet outlet and the breathing sensor at the initial moment of the oxygen generation system startup. The main control module is also used to control the connection state of the two-position three-way valve, wherein: in response to the breathing sensor detecting user inhalation, the main control module controls the two-position three-way valve to connect the gas storage tank and the air jet outlet, and maintains this connection for a set time; after the set time, the main control module controls the two-position three-way valve to connect the air jet outlet and the breathing sensor.

[0012] In some embodiments, a one-way valve is provided on the bypass pipeline, and the main control module controls the one-way valve to connect the bypass pipeline to the atmosphere after a set time to discharge the gas in the bypass pipeline; or, in response to the pressure at the breathing sensor exceeding a set pressure threshold, the main control module controls the one-way valve to connect the bypass pipeline to the atmosphere to discharge the gas in the bypass pipeline.

[0013] In some embodiments, the breathing sensor and the pressure sensor are the same sensor.

[0014] In some embodiments, a bypass valve is provided on the bypass pipeline for opening and closing the bypass pipeline; during oxygen injection, the main control module controls the oxygen supply valve to open the oxygen supply pipeline, and the bypass valve to close the bypass pipeline; when oxygen supply ends, the main control module controls the oxygen supply valve to close the oxygen supply pipeline, and simultaneously, in response to the pressure sensor detecting that the pressure at the jet nozzle exceeds a set pressure threshold, controls the bypass valve to continue closing the bypass pipeline; in response to the pressure sensor detecting that the pressure at the jet nozzle does not exceed the set pressure threshold, controls the bypass valve to open so that the breathing sensor can detect the user's breathing.

[0015] In some embodiments, the molecular sieve is connected to at least one valve, the molecular sieve and the at least one valve are integrated in the molecular sieve module, and the molecular sieve and the at least one valve can be replaced as a single unit.

[0016] In some embodiments, the oxygen generation system further includes: a temperature sensor for detecting the temperature of the molecular sieve, the temperature sensor being integrated on the molecular sieve; a cooling fan for dissipating heat from the molecular sieve; the main control module is further configured to control the oxygen generation system according to the temperature of the molecular sieve, wherein: in response to the temperature of the molecular sieve exceeding a first preset threshold, the main control module controls the cooling fan to increase its rotation speed; in response to the temperature of the molecular sieve falling below a second preset threshold, the main control module controls the cooling fan to decrease its rotation speed.

[0017] In some embodiments, the main control module is further configured to: control the oxygen generation system to stop operating in response to the temperature of the molecular sieve exceeding a third preset threshold or falling below a fourth preset threshold.

[0018] In some embodiments, the oxygen generation system further includes a breathing sensor, an acceleration sensor, an altitude sensor, and / or a pressure sensor; the breathing sensor is used to detect the user's breathing rate and / or breathing state; the acceleration sensor is used to detect the user's movement state; the altitude sensor is used to detect the altitude of the oxygen generation system; the pressure sensor is used to detect the pressure in the gas storage tank of the oxygen generation system; the main control module is also used to adjust the oxygen flow rate and / or oxygen delivery time according to the user's breathing rate, breathing state, movement state, altitude, and / or pressure in the gas storage tank; wherein the oxygen flow rate and / or oxygen delivery time are determined by artificial intelligence, machine recognition, and / or cloud processing methods; wherein the artificial intelligence method is implemented through a neural network model, the model input is the user's breathing rate, breathing state, movement state, altitude of the oxygen generation system, and / or pressure in the gas storage tank, and the model output is the oxygen flow rate and / or oxygen delivery time.

[0019] In some embodiments, the oxygen generation system further includes a storage module for storing the user's breathing status information and / or usage records.

[0020] Another aspect of this application provides a face mask that includes the oxygen generation system as described above.

[0021] Another aspect of this application provides an oxygen generation method, the method comprising: before formal oxygen injection, controlling the oxygen supply valve to open so that the gas storage tank delivers a set amount of oxygen to the jet nozzle; after the gas storage tank delivers the set amount of oxygen to the jet nozzle, acquiring the pressure at the jet nozzle detected by the pressure sensor; in response to the pressure at the jet nozzle exceeding a set pressure threshold, controlling the oxygen supply valve to block the oxygen delivery pipeline to stop oxygen injection; in response to the pressure at the jet nozzle not exceeding the set pressure threshold, controlling the oxygen supply valve to continue to open for formal oxygen injection; acquiring the user's breathing state detected by the breathing sensor; in response to the breathing sensor detecting the end of the user's exhalation, controlling the jet nozzle to eject a set amount of oxygen after the user's exhalation ends and before the next inhalation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an oxygen generation system according to some embodiments of this application; Figure 2 This is a block diagram of a molecular sieve module according to some embodiments of this application; Figure 3 This is an exemplary flowchart of a method for controlling an oxygen generation system according to some embodiments of this application; Figures 4 to 8 as well as Figure 10 This is a schematic diagram of the structure of a portion of the oxygen generation system according to some embodiments of this application; Figure 9 and Figure 11 This is an exemplary flowchart of a method for controlling an oxygen generation system according to some embodiments of this application; Figure 12 This is a schematic diagram of the structure of a partial oxygen generation system according to some embodiments of this application; Figure 13 This is a block diagram of a sensor module in an oxygen generation system according to some embodiments of this application. Detailed Implementation

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this application. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0024] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0025] While this application makes various references to certain modules or units in the systems according to embodiments of this application, any number of different modules or units may be used and run on clients and / or servers. The modules described are merely illustrative, and different aspects of the systems and methods may use different modules.

[0026] Flowcharts are used in this application to illustrate the operations performed by the system according to embodiments of this application. It should be understood that the preceding or following operations are not necessarily performed in exact order. Instead, various steps can be processed in reverse order or simultaneously. Furthermore, other operations can be added to these processes, or one or more steps can be removed from them.

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this application. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0028] Figure 1 This is a schematic diagram of an oxygen generation system according to some embodiments of this application. The oxygen generation system 100 includes an energy module 110, a main control module 120, a compressor 130, a molecular sieve module 140, a gas storage tank 150, a jet nozzle 160, a sensor module 170, and an interaction module 180.

[0029] Energy module 110 is used to provide energy (such as electrical energy) to other modules in oxygen generation system 100. In some embodiments, energy module 110 can obtain electrical energy through an external power source. In some embodiments, energy module 110 can provide electrical energy through an energy storage device, a power generation device, or a hybrid of energy storage and power generation. In some embodiments, the energy storage device may include one or more batteries. In some embodiments, the energy storage device can be charged through an external power source or through a power generation device. In some embodiments, the power generation device may include one or more generators. In some embodiments, the generator may employ one or more of the following energy conversion devices: human power generation, solar power generation, thermal conduction power generation, wind power generation, nuclear power generation, etc. In some embodiments, energy module 110 may include an energy management unit for managing the energy output of energy module 110 and effectively distributing energy to the various modules and / or components in oxygen generation system 100. In some embodiments, when energy module 110 obtains electrical energy through an external AC power source, energy module 110 may also include a power adapter for converting the external AC power into DC power suitable for oxygen generation system 100.

[0030] The main control module 120 can be used to control other modules on the oxygen generation system 100 to realize the functions of the oxygen generation system 100. In some embodiments, the control method can be centralized or distributed, and can be wired or wireless. In some embodiments, the main control module 120 can execute program instructions in the form of one or more processors. In some embodiments, the main control module 120 can receive data and / or information sent by the energy module 110, compressor 130, molecular sieve module 140, sensor module 170, and interaction module 180, and determine and control the operation of the oxygen generation system 100 according to the information through predetermined logic. In some embodiments, the main control module 120 can send instructions to the energy module 110, compressor 130, molecular sieve module 140, sensor module 170, and interaction module 180. For example, the main control module 120 can obtain data and / or information (such as molecular sieve manufacturing information, operating information, etc.) sent by the molecular sieve module 140, process the data and / or information, and determine the molecular sieve status according to the processing result. Specifically, the main control module 120 can compare the data and / or information with a set threshold. If the data and / or information exceeds or falls below the set threshold, it indicates that the molecular sieve is in an abnormal state. Alternatively, the main control module 120 can process the data and / or information using a state judgment model. This state judgment model can be a neural network model, which can be trained using known molecular sieve data and / or information and the molecular sieve's state. The model's input is the molecular sieve data and / or information, and its output is the molecular sieve's state. The trained model can determine the molecular sieve's state based on new molecular sieve data and / or information. If the processing result indicates that the molecular sieve's state is normal, the oxygen generation system 100 is controlled to operate normally. If the processing result indicates that the molecular sieve's state is abnormal, the oxygen generation system 100 is controlled to operate in a safe mode or trigger an alarm. For another example, the main control module 120 can acquire data and / or information sent by the sensor module 160, process the data and / or information, and determine the current environment of the oxygen generation system 100 and / or the user's current physiological state based on the processing result, thereby adjusting the operating parameters of the oxygen generation system 100 (e.g., oxygen flow rate and / or oxygen delivery time). Specifically, operating parameter adjustment rules can be preset, with different operating parameters corresponding to different environments and / or user physiological states. The main control module 120 adjusts the operating parameters of the oxygen generation system 100 according to the preset parameter adjustment rules. Alternatively, the main control module 120 can also adjust the operating parameters of the oxygen generation system 100 through an operating parameter adjustment model. This model can be a neural network model, which can be trained using known environmental and / or user physiological state data and operating parameters. The input of the model is the environmental and / or user physiological state data, and the output of the model is the operating parameters.Furthermore, operating parameter adjustment rules can be customized according to different users' usage habits, or personalized operating parameter adjustment models can be trained based on users' historical usage records. The main control module 120 can control the interaction module 180 to display the operating parameters of the oxygen generation system 100, or display the user operation interface. The main control module 120 can also receive operation commands input by the user through the interaction module 180 and control the operation of the oxygen generation system 100 according to the operation commands. In some embodiments, the main control module 120 may include one or more sub-controllers (e.g., a single-core processing device or a multi-core multi-core processing device). As an example only, the drive controller may include an electronic control unit (ECU), an application-specific integrated circuit (ASIC), an application-specific instruction processor (ASIP), a graphics processing unit (GPU), a physical processor (PPU), a digital signal processor (DSP), a field-programmable gate array (FPGA), a programmable logic device (PLD), a microcontroller unit, a reduced instruction set computer (RISC), a microprocessor, or any combination thereof.

[0031] Compressor 130 can be used to compress air. In some embodiments, the air inlet of compressor 130 can be connected to an air filter, and the air enters compressor 130 after being filtered. Compressor 130 can be various types of air compressors, including but not limited to centrifugal air compressors, reciprocating air compressors, rolling reciprocating air compressors, vane air compressors, scroll air compressors, screw air compressors, etc. In some embodiments, compressor 130 can be a variable frequency air pump, and the user can adjust the output power of the variable frequency air pump according to needs. In some embodiments, an air detection sensor can also be connected before the air inlet of compressor 130 for detecting air quality. In some embodiments, when the air quality does not meet the set requirements, oxygen generation system 100 can issue an alert. For example, air quality can be reflected as the Air Quality Index (AQI), and when the AQI exceeds a set threshold (e.g., 300, 250, 200, 150, 100, etc.), oxygen generation system 100 issues an alert. In some embodiments, the main control module 120 can control the interaction module 180 to provide reminders, such as displaying alarm information, emitting alarm sounds, or illuminating alarm lights. For example, reminder information can be sent to user terminals (such as users' mobile phones or computers) via the communication module (not shown) in the oxygen generation system 100.

[0032] Molecular sieve module 140 can be used to separate oxygen from air. Molecular sieve module 140 includes at least one molecular sieve adsorption tower for adsorbing nitrogen from compressed air, leaving oxygen in the gas phase, thereby achieving nitrogen and oxygen separation to obtain the desired oxygen. In some embodiments, molecular sieve module 140 includes a dual molecular sieve tower. In some embodiments, a valve (e.g., a pressure equalization valve, a throttling valve) is connected between the dual molecular sieve towers. The molecular sieve tower is connected to compressor 130 and / or air storage tank 150 via the valve. In some embodiments, the valve can be integrated into molecular sieve module 140 and shipped as a whole with the molecular sieve tower, allowing for integrated replacement of the molecular sieve tower and valve. In some embodiments, molecular sieve module 140 also includes a molecular sieve information unit for storing relevant information about the molecular sieve, such as manufacturing information and operating information.

[0033] The gas storage tank 150 can store the oxygen produced by the molecular sieve module 140. The gas storage tank 150 can be connected to the outlet of the molecular sieve module 140 via a valve. The gas storage tank 150 can also be connected to the jet nozzle 160 via a valve. In some embodiments, the gas storage tank 150 can be a wet gas storage tank. In some embodiments, the gas storage tank 150 can be a dry gas storage tank, including but not limited to oil-sealed gas storage tanks, grease-sealed gas storage tanks, and flexible membrane-sealed gas storage tanks. The jet nozzle 160 is used to dispense oxygen to the user.

[0034] The sensor module 170 is used to detect the environmental conditions of the oxygen generation system 100 and / or the user's current physiological state. The sensor module 170 can convert the detected environmental conditions and / or the user's physiological state into electrical signals. In some embodiments, sensors used to detect the environmental conditions of the oxygen generation system 100 may include an altitude sensor, a temperature sensor, a pressure sensor, an oxygen concentration sensor, etc. In some embodiments, sensors used to detect the user's current physiological state may include a respiration sensor, a blood oxygen concentration sensor, a blood pressure sensor, a pulse sensor, a heart rate sensor, a speed sensor, an acceleration sensor, etc.

[0035] The interaction module 180 can be used to interact with a user. In some embodiments, the interaction module 180 has a display function, which can display the operating parameters of the oxygen generation system 100 and / or items that the user can operate. In some embodiments, the interaction module 180 has a voice broadcast function. For example, it can broadcast the operating status of the oxygen generation system 100, or, when the oxygen generation system 100 malfunctions, it can broadcast the malfunction. Specifically, the interaction module 180 may integrate a speaker, buzzer, etc. In some embodiments, the interaction module 180 has a light-emitting function. For example, when the oxygen generation system 100 malfunctions, it can emit light or flash. Specifically, the interaction module 180 may integrate a light-emitting diode, etc. The user can operate through the interaction module 180, and the user's operation methods include, but are not limited to, touch, button, click, handwriting, voice control, and body control. In some embodiments, the interaction module 180 has an identity recognition function, which can identify the identity of the operator. For example, only when the operator is authenticated can their operation be accepted by the oxygen generation system 100. Various technologies can be used for identity verification, such as key technology and biometric identification technology. Biometric identification technology includes, but is not limited to, fingerprint recognition, iris recognition, vein recognition, voice recognition, and face recognition.

[0036] It should be noted that the above description is for convenience only and should not be construed as limiting this application to the scope of the embodiments described. It is understood that those skilled in the art, after understanding the principles of this application, can make various modifications and changes in form and detail to the oxygen generation system 100 described above without departing from these principles. However, these changes and modifications do not depart from the scope of this application. In some embodiments, the oxygen generation system 100 may also include other components not shown in the figures, such as an air filter connected before the compressor inlet, and the components connected by valves and pipelines. A fine sieve tower, humidifier, flow meter, etc., may be connected after the molecular sieve module outlet.

[0037] Figure 2 This is a block diagram of a molecular sieve module according to some embodiments of this application. The molecular sieve module 140 includes a molecular sieve 141 and a molecular sieve information unit 142.

[0038] Molecular sieve 141 can be used to separate nitrogen and oxygen in compressed air. Molecular sieve 141 can consist of at least one molecular sieve column, each filled with zeolite as an adsorbent. Because oxygen has a larger quadrupole moment than nitrogen, the interaction between nitrogen and the cations in the zeolite is stronger; therefore, the zeolite preferentially adsorbs nitrogen, retaining oxygen in the gas phase. Zeolites that can be used in the molecular sieve column include, but are not limited to, aluminum silicate salts, LiX, LiAgX, and Li-LSX.

[0039] Molecular sieve 141 experiences a gradual decline in performance over time. Several factors can contribute to this decline. For example, compressed air entering the molecular sieve 141 may carry impurities such as dust and oil. Prolonged contamination of the zeolite adsorbent with these impurities can reduce its adsorption capacity. Therefore, timely maintenance or replacement of the molecular sieve 141 is necessary to ensure the oxygen production efficiency of the oxygen generation system 100. Traditional methods involve manual recording or inspection, such as manually recording the duration of molecular sieve use or periodically checking for obvious impurities or significant performance degradation (e.g., a significant decrease in maximum oxygen flow rate compared to the last or earlier inspection). This manual approach is time-consuming and labor-intensive, and human negligence can lead to delays in maintenance or replacement. This is particularly problematic for portable oxygen concentrators such as home oxygen concentrators, where users often lack the awareness and resources to regularly maintain or inspect the equipment. When the molecular sieve has been used for an extended period or malfunctions, it can severely impact the user experience. In this application, by adding a molecular sieve information unit 142 to automatically record the information of the molecular sieve 141, the cumulative operating time or abnormality of the molecular sieve 141 can be automatically detected, thereby reminding the user to maintain or replace the molecular sieve in a timely manner.

[0040] The molecular sieve information unit 142 can store information about the molecular sieve 141. In some embodiments, the molecular sieve information unit 142 can store manufacturing information and operational information of the molecular sieve 141. Manufacturing information includes, but is not limited to, the molecular sieve's model, identification, batch number, composition, design parameters, design life, manufacturer, and manufacturing date. The identification can indicate the identity of the molecular sieve 141. Specifically, each molecular sieve 141 can have its own unique official identification upon leaving the factory. The identification can be in various forms, including but not limited to strings, barcodes, and QR codes. In some embodiments, the identification can consist of a code and a factory serial number. The design life refers to the effective usage time that the manufacturer expects the molecular sieve to maintain a certain nitrogen-oxygen separation effect during its design. The design life can be determined experimentally. As an example only, the design life can be 1 year, 2 years, 3 years, 4 years, 5 years, etc. Operational information can include cumulative operating time (i.e., the total operating time of the molecular sieve since it was manufactured), temperature information, operating status information, altitude information, location information, etc.

[0041] In some embodiments, the molecular sieve information unit 142 can store information about the molecular sieve 141 in an electrically erasable programmable read-only memory (EEPROM). Data in the EEPROM is not lost after power failure and can be read again after power is restored. Manufacturers can store the molecular sieve's factory information in the EEPROM. In some embodiments, manufacturers can encrypt the factory information before storing it in the EEPROM. Encrypted data is not easily tampered with.

[0042] In some embodiments, the molecular sieve information unit 142 includes a processing chip connected to the EEPROM. This processing chip can read data from the EEPROM, write data to the EEPROM, and / or analyze the read data. Specifically, when the molecular sieve information unit 142 is powered on (i.e., the oxygen generation system 100 is running), the processing chip can read the data stored in the EEPROM and write data to the EEPROM during the operation of the oxygen generation system 100. In some embodiments, the EEPROM stores a cumulative running time. Each time the oxygen generation system 100 is started, the processing chip retrieves the cumulative running time from the EEPROM, records the single running time of this operation, adds the single running time of this operation to the retrieved cumulative running time to obtain an updated cumulative running time, and then writes the updated cumulative running time into the EEPROM. For example, during a startup of the oxygen generation system 100, the processing chip reads the cumulative running time stored in the EEPROM as 100 hours, then records the single running time of this operation as 2 hours. The processing chip then updates the cumulative running time to 102 hours and writes it into the EEPROM. In some embodiments, after retrieving the cumulative running time, the processing chip adds this interval to the cumulative running time at regular intervals (e.g., 10 seconds, 20 seconds, 30 seconds, 1 minute, 2 minutes, 3 minutes, 4 minutes, 5 minutes, etc.) after the oxygen generation system 100 starts, obtaining the updated cumulative running time, and writes it into the EEPROM. In some embodiments, the processing chip may encrypt the data and / or information before writing it into the EEPROM. Various encryption algorithms can be used for encryption, such as symmetric encryption algorithms, including but not limited to Data Encryption Standard (DES), Triple Data Encryption Standard (3DES), and Advanced Encryption Standard (AES); asymmetric algorithms, including but not limited to RSA (Rivet, Shamir, Adleman Algorithm), Digital Signature Algorithm (DSA), and Elliptic Curve Cryptography (ECC); and hash algorithms, including but not limited to Secure Hash Algorithm 1 (SHA-1) and Message-Digest Algorithm (MD5). Encrypted data is not easily tampered with, allowing the main control module 120 to read accurate molecular sieve data, ensuring the security and reliability of the oxygen generation system 100.In some embodiments, after the cumulative running time is updated, the main control module 120 can also control the communication module (not shown) in the oxygen generation system 100 to upload the updated cumulative running time to the cloud server. In some embodiments, the main control module 120 can also be used to update one or more of the following information: temperature information, operating status information, altitude information, location information, etc. of the molecular sieve.

[0043] It should be noted that although the above describes reading data from the EEPROM or writing data to it through the processing chip in the molecular sieve information unit 142, in some alternative embodiments, the main control module 120 may also directly read data from the EEPROM, analyze the read data, or write data to the EEPROM.

[0044] The main control module 120 can acquire information from the molecular sieve module 140 (such as the molecular sieve information unit 142) and control the operation of the oxygen generation system 100 based on the acquired information. In some embodiments, in response to at least some of the molecular sieve information exceeding a preset range, the main control module 120 controls the oxygen generation system 100 to perform corresponding operations. In some embodiments, the main control module 120 can acquire the molecular sieve information stored in the molecular sieve module 140 and display it to the user through the interaction module 180. In some embodiments, the main control module 120 can send the information acquired from the molecular sieve module 140 to a storage module (not shown) for storage, so that it can be retrieved when needed later. For example, the main control module 120 can acquire the molecular sieve's identification, design life, and cumulative operating time from the molecular sieve module 140 and send it to the storage module for storage. When the user needs it (e.g., when manually checking the oxygen generation system 100), this information can be retrieved for inspection to determine whether maintenance and / or replacement of the molecular sieve is required. In some embodiments, the storage module can also store the user's breathing status information and / or usage records. For example, it can store the user's breathing rate, exhalation time, inhalation time, and operating parameters set when operating the oxygen generation system. This recorded information can be used to analyze the user's health status and usage habits, and can also enable the oxygen generation system to perform automatic adjustments.

[0045] In some embodiments, when the oxygen generation system 100 is started, the main control module 120 can obtain the design life and cumulative operating time of the molecular sieve, determine whether the cumulative operating time exceeds the design life, and control the operation of the oxygen generation system 100 according to the determination result. For example, if the cumulative operating time does not exceed the design life, the main control module 120 controls the oxygen generation system 100 to start and operate normally; if the cumulative operating time exceeds the design life, the main control module 120 controls the oxygen generation system 100 to perform a reminder operation. In some embodiments, the main control module 120 can control the interaction module 180 to perform reminders, such as displaying alarm information, emitting alarm sounds, illuminating alarm lights, etc. For another example, reminder information can be sent to user terminals (such as users' mobile phones, computers, etc.) through the communication module (not shown) in the oxygen generation system 100. In some embodiments, if the information obtained by the main control module 120 from the molecular sieve module 140 is incorrect (e.g., an EEPROM malfunction leading to data loss or data rewriting), the main control module 120 controls the oxygen generation system 100 (e.g., the interaction module 180) to perform an error reporting operation and does not start the oxygen generation system 100. In some embodiments, for molecular sieve modules manufactured by a specific manufacturer, the molecular sieve information unit stores official information about the molecular sieve at the time of manufacture, including a unique official identifier and other official information (such as model, batch, composition, design parameters, design life, manufacturer, manufacturing date, cumulative usage time, etc.). The identity of the molecular sieve can be determined through the unique official identifier, and other official information about the molecular sieve can be obtained. In some embodiments, when a user starts the oxygen generation system 100, the main control module 120 can read the molecular sieve's identification information. If the molecular sieve's identification information is not read, or if the read molecular sieve's identification information does not match the unique official identifier, the molecular sieve is considered abnormal, and the oxygen generation system 100 can be controlled to stop operation and / or an error notification can be issued. If the molecular sieve's identification information is read and matches the unique official identifier, the corresponding molecular sieve is considered normal, and the oxygen generation system 100 can be controlled to operate normally. Alternatively, if the read molecular sieve's identification information matches the official unique identifier, other information about the molecular sieve can be further obtained, and it can be determined whether this other information matches other official information of the molecular sieve corresponding to the official unique identifier. If they match, the molecular sieve is considered normal; if they do not match, the molecular sieve is considered abnormal. By setting a unique official identifier, counterfeit or refurbished molecular sieves can be effectively identified, ensuring that the molecular sieve used in the oxygen generation system 100 is a compliant product. In some embodiments, when the oxygen generation system 100 is in operation, the main control module 120 can also determine whether the cumulative operating time of the molecular sieve exceeds its design life, and control the oxygen generation system 100 to perform corresponding operations based on the determination result. In some embodiments, when the oxygen generation system 100 is in operation, the main control module 120 continuously obtains information from the molecular sieve module 140, and if the information is incorrect, it controls the oxygen generation system 100 to stop operating.

[0046] It should be noted that the above description is for convenience only and should not be construed as limiting this application to the scope of the embodiments described. It is understood that those skilled in the art, after understanding the principles of this application, can make various modifications and changes in form and detail to the implementation of the molecular sieve module without departing from these principles. However, these changes and modifications do not depart from the scope of this application. For example, in addition to EEPROM, the molecular sieve information unit 142 can also employ other non-volatile memories, such as flash memory, ferromagnetic random access memory, etc.

[0047] Figure 3 This is an exemplary flowchart of a method for controlling an oxygen generation system according to some embodiments of the application. Specifically, the method 300 can be executed by the main control module 120.

[0048] Step 301: Read the molecular sieve information, including the molecular sieve's design life and cumulative operating time. Specifically, the main control module 120 can read the molecular sieve information when the user starts the oxygen generation system 100 (e.g., the user presses the start button). In some embodiments, the main control module 120 can read the molecular sieve information from the molecular sieve module 140 (e.g., molecular sieve information unit 142).

[0049] Step 303: Determine if the molecular sieve information is incorrect. In some embodiments, the molecular sieve information unit 142 stores information using non-volatile memory such as EEPROM. The data stored in the memory may be erroneous, such as data corruption, data overwriting, or data loss. For example, in the event of data loss, the main control module 120 cannot read the molecular sieve information, indicating that the molecular sieve information is incorrect. In some embodiments, the molecular sieve information may indicate that the molecular sieve is not suitable for its oxygen generation system, for example, due to parameter mismatch with other modules in the oxygen generation system; this also indicates that the molecular sieve information is incorrect. If the molecular sieve information is incorrect, proceed to step 305; otherwise, proceed to step 307.

[0050] Step 305: In response to an error in the read molecular sieve information, the oxygen generation system is controlled to perform an error reporting operation. In some embodiments, the main control module 120 can control the display module (such as the interactive module 180 with display function) in the oxygen generation system to report errors, for example, displaying error text, images, etc. In some embodiments, the main control module 120 can control the sound module (such as the interactive module with sound function, speaker, buzzer, etc.) in the oxygen generation system to report errors, for example, emitting a warning sound. In some embodiments, the main control module 120 can control the light-emitting module (such as light-emitting diode) in the oxygen generation system to report errors, for example, by keeping it constantly lit or flashing. In some embodiments, the main control module 120 can also control the communication module (not shown) in the oxygen generation system to send an error reminder to the user terminal (such as a mobile phone, computer, etc.). Specifically, the communication module can directly send an error reminder to the user terminal, or the communication module can first send error information to the server, and then the server sends an error reminder to the user terminal.

[0051] Step 307: In response to the fact that the read molecular sieve information is correct, determine whether the cumulative operating time exceeds the design life. If the cumulative operating time does not exceed the design life, proceed to step 309; otherwise, proceed to step 311.

[0052] Step 309: In response to the cumulative operating time not exceeding the design life, control the oxygen generation system to start normally.

[0053] Step 311: In response to the cumulative operating time exceeding the design life, the oxygen generation system is controlled to start in safety mode. In some embodiments, safety mode may be started after reminding the user. Similar to controlling the oxygen generation system to perform an error reporting operation in step 305, the main control module may control the display module, sound module, and light-emitting module in the oxygen generation system to provide reminders, and may also control the communication module in the oxygen generation system to send error reminders to the user terminal. In some embodiments, safety mode may allow the oxygen generation system to run for a set time, after which the oxygen generation system is forcibly stopped.

[0054] Figures 4 to 8 and Figure 10 This is a schematic diagram of a portion of an oxygen generation system according to some embodiments of this application. The portion includes a gas storage tank 150, a jet nozzle 160, and a breathing sensor 172. An oxygen delivery pipeline 192 is provided between the gas storage tank 150 and the jet nozzle 160, and the breathing sensor 172 is connected to the oxygen delivery pipeline 192 via a bypass pipeline 193.

[0055] The gas tank 150 can store oxygen. The nozzle 160 can be connected to the user (e.g., the user's nasal cavity) to provide oxygen to the user. The breathing sensor 172 can detect the user's breathing status, such as whether the user has started inhaling and / or breathing, the user's breathing rate, etc. Various forms of breathing sensors can be used in this application, including but not limited to thermal breathing sensors, differential pressure breathing sensors, humidity-sensitive breathing sensors, etc. In some embodiments, this application uses a breathing sensor that detects the user's breathing by detecting changes in micro-pressure during exhalation and inhalation or by detecting changes in inhalation flow rate.

[0056] In traditional oxygen concentrators, the gas tank and the exhaust nozzle are connected via a two-way valve and an oxygen delivery line. A breathing sensor is connected to the oxygen delivery line via a bypass line to detect the user's breathing. This connection method has the following drawbacks: if the exhaust nozzle is blocked, the pressure in the oxygen delivery line and the bypass line increases significantly. This immense pressure on the breathing sensor will damage it and shorten its lifespan. Figure 4 As shown, this application solves this problem by replacing the two-way valve with a three-way valve.

[0057] In some embodiments, the three-way valve 191 can be a two-position three-way valve with two states. The first state connects the gas storage tank 150 and the jet port 160, such as... Figure 5 As shown; the second state is when the jet nozzle 160 is connected to the breathing sensor 172, as shown. Figure 6 As shown.

[0058] In some embodiments, the breathing sensor 172, the three-way valve 191, and the main control module 120 are electrically connected. The main control module 120 can control the connection state of the three-way valve 191 based on the user's breathing status detected by the breathing sensor 172. Specifically, in the initial state when the oxygen generation system 100 starts up, the three-way valve 191 connects the air outlet 160 and the breathing sensor 172. At this time, the gas storage tank 150 is not connected to the air outlet 160 or the breathing sensor, and the air outlet 160 cannot supply oxygen to the user. Figure 6 (As shown). When the user begins to inhale, the resulting airflow change is transmitted from the nozzle 160 to the breathing sensor 172. The breathing sensor 172 detects the user's inhalation, at which point the main control module 120 controls the three-way valve 191 to switch states, connecting the gas tank 150 and the nozzle 160. At this time, the nozzle 160 can provide oxygen to the user. Figure 5As shown in the diagram, the breathing sensor 172 is not connected to the oxygen delivery line 192. In some embodiments, another line (not shown) can be provided between the air outlet 160 and the breathing sensor 172, or a line can be provided at the end of the breathing sensor 172 that directly contacts the user (e.g., the user's nasal cavity) to detect the user's breathing status when the breathing sensor 172 is not connected to the oxygen delivery line 192. In some embodiments, the main control module 120 can control the three-way valve 191 to connect the gas tank 150 and the air outlet 160 at a specific time after the breathing sensor 172 detects the user's inhalation, and maintain this connection for a set time. After the set time, the three-way valve 191 is controlled to switch back to the state of connecting the air outlet 160 and the breathing sensor 172, until the user's next inhalation is detected, at which point it switches back to the state of connecting the gas tank 150 and the air outlet 160. The set time can be a fixed value or determined according to the actual required oxygen supply and / or the user's breathing rate. For example, after each inhalation, the three-way valve 191 can be controlled to connect the gas tank 150 and the air outlet 160 for 0.05 seconds and held for 2 seconds. After 2 seconds, the three-way valve 191 switches back to connecting the air outlet 160 and the breathing sensor 172. This three-way valve design isolates the breathing sensor 172 from the gas tank 150 when the user is not inhaling, preventing excessive pressure on the breathing sensor 172 when the air outlet 160 is blocked, thus improving the lifespan of the breathing sensor. In some embodiments, a flow regulating valve is also connected after the gas tank 150 to regulate the oxygen flow rate. In some embodiments, an oxygen supply valve is also provided on the oxygen delivery line 192, and the oxygen delivery time of the oxygen generation system can be controlled by opening and closing the oxygen supply valve. More information on regulating the oxygen flow rate and / or oxygen delivery time can be found in [link to relevant documentation]. Figure 8 And its description.

[0059] In some embodiments, such as Figure 7 As shown, a one-way valve 194 may also be provided on the bypass line 193. When oxygen injection ends, or when the pressure at the breathing sensor 172 (i.e., the bypass line 193) exceeds a set pressure threshold, the main control module 120 can control the one-way valve 194 to connect the bypass line 193 to the atmosphere to discharge the gas in the bypass line 193, thus preventing the breathing sensor 172 from being subjected to excessive pressure. In some embodiments, the set pressure threshold may be less than or equal to the safe pressure threshold of the breathing sensor 172 to ensure the safety of the breathing sensor.

[0060] In some embodiments, the problem of excessive pressure on the breathing sensor due to nozzle blockage can be solved by first spraying a small amount of oxygen before the actual oxygen injection to detect whether the nozzle is blocked. For example... Figure 8As shown, an oxygen supply valve 195 is provided on the oxygen supply pipeline 192. The oxygen supply valve 195 can be used to open and close the oxygen supply pipeline 192. A pressure sensor 171 is provided at the air jet nozzle 160 to detect the pressure at the air jet nozzle. Figure 9 for Figure 8 The working process of the oxygen generation system is shown.

[0061] Step 901: A small amount of oxygen is sprayed. Before the formal oxygen spraying, the main control module 120 controls the oxygen supply valve 195 to open so that the gas storage tank 150 outputs a small amount of oxygen to the spray nozzle 160. The specific amount of the small amount of oxygen can be preset, such as 5ml, 3ml, 2ml, 1ml, etc.

[0062] Step 903: Determine if the pressure at the nozzle exceeds a set threshold. After the gas tank 150 outputs a small amount of oxygen to the nozzle 160, if the pressure sensor 171 detects that the pressure at the nozzle 160 exceeds a set pressure threshold (e.g., 120 kPa, 110 kPa, etc.), or the pressure at the nozzle 160 changes by more than a set amplitude threshold (e.g., 50%, 40%, 30%, etc.) compared to before the small amount of oxygen was output, it indicates that the nozzle 160 may be blocked. Then, proceed to step 907, where the main control module 120 controls the oxygen supply valve 195 to block the oxygen delivery pipeline 192 to stop oxygen injection. If the pressure sensor 171 detects that the pressure at the nozzle 160 does not exceed the set pressure threshold, or the pressure at the nozzle 160 changes by more than a set amplitude threshold compared to before the small amount of oxygen was output, it indicates that the nozzle 160 is not blocked. Then, proceed to step 905, where the main control module 120 controls the oxygen supply valve 195 to continue opening for regular oxygen injection.

[0063] In some embodiments, the problem of excessive pressure on the breathing sensor due to air jet blockage can also be solved by installing a bypass valve on the bypass line. For example... Figure 10 As shown, a bypass valve 196 is provided on the bypass line 193. The bypass valve 196 can be used to open and close the bypass line 193. A pressure sensor 171 is provided at the jet nozzle 160 to detect the pressure at the jet nozzle. Figure 11 for Figure 10 The working process of the oxygen generation system is shown.

[0064] Step 1101: Open the oxygen supply valve, disconnect the bypass valve, and start oxygen injection. During oxygen injection, the main control module 120 controls the oxygen supply valve 195 to open the oxygen delivery pipeline 192 so that the oxygen in the gas storage tank 150 reaches the jet nozzle 160, and the bypass valve 196 blocks the bypass pipeline 193 to prevent oxygen from reaching the breathing sensor 172.

[0065] Step 1103: Disconnect the oxygen supply valve and the bypass valve; oxygen injection ends. At the end of oxygen injection, the oxygen supply valve 195 blocks the oxygen delivery pipeline 192.

[0066] Step 1105: Determine if the pressure at the nozzle exceeds the set threshold. After oxygen injection ends, if pressure sensor 171 detects that the pressure at nozzle 160 exceeds the set pressure threshold, it indicates that nozzle 160 may be blocked. In this case, proceed to step 1111 to trigger an alarm. In this situation, bypass valve 196 remains closed, and the system stops injecting oxygen. If pressure sensor 171 detects that the pressure at nozzle 160 does not exceed the set pressure threshold, it indicates that nozzle 160 is not blocked. In this case, proceed to step 1107, where the main control module 120 controls bypass valve 196 to open, connecting breathing sensor 172 to nozzle 160, thereby enabling the detection of user breathing.

[0067] Step 1109: Determine if the breathing sensor detects the user inhaling. If inhalation is detected, return to step 1101 and resume oxygen delivery; otherwise, continue monitoring.

[0068] It should be noted that in some embodiments, Figure 8 and / or Figure 10 The pressure sensor 171 and the breathing sensor 172 shown can be the same sensor. For example, when the breathing sensor 172 is a differential pressure sensor, it can have both breathing detection and pressure detection functions.

[0069] Figure 12 This is a schematic diagram of the structure of a partial oxygen generation system according to some embodiments of this application.

[0070] In some embodiments, the molecular sieve employs a dual molecular sieve tower, including a first molecular sieve tower 1411 and a second molecular sieve tower 1412. In some embodiments, the two molecular sieve towers are connected by a pressure equalization valve 147. The pressure equalization valve 147 is used to balance the pressure within the two molecular sieve towers. In some embodiments, a throttling valve 148 is also connected between the two molecular sieve towers to control the gas flow rate between them. In some embodiments, the first inlet / outlet valve 1451 and the second inlet / outlet valve 1452 can be two-position three-way valves, each with two states: one state connects the inlet port 143 to the corresponding molecular sieve tower, and the other state connects the outlet port 144 to the corresponding molecular sieve tower. In some embodiments, the first inlet / outlet valve 1451 and the second inlet / outlet valve 1452 can be rotary solenoid valves. In some embodiments, the first molecular sieve tower 1411 and the second molecular sieve tower 1412 alternately produce oxygen; when one molecular sieve tower is producing oxygen, the other molecular sieve tower desorbs the nitrogen adsorbed on it. Specifically, when the first molecular sieve tower 1411 starts producing oxygen, the first inlet and outlet valve 1451 connects the inlet port 143 with the first molecular sieve tower 1411. Compressed air enters the first molecular sieve tower 1411 after reaching the first inlet and outlet valve 1451 from the inlet port 143. The first molecular sieve tower 1411 adsorbs nitrogen from the compressed air, and oxygen is retained in the gas phase and reaches the first one-way valve 1461, thereby entering the gas storage tank 150 for storage. At this time, the second inlet and outlet valve 1452 connects the second molecular sieve tower 1412 with the outlet port 144. The second molecular sieve tower 1412 performs nitrogen desorption, and the desorbed nitrogen reaches the second inlet and outlet valve 1452 and is discharged from the outlet port 144. When the second molecular sieve tower 1412 starts producing oxygen, the second inlet and outlet valve 1452 connects the inlet port 143 to the second molecular sieve tower 1412, and the first inlet and outlet valve 1451 connects the first molecular sieve tower 1411 to the outlet port 144. The first molecular sieve tower 1411 then undergoes nitrogen desorption.

[0071] Currently, manufacturers on the market typically combine molecular sieve towers and valves (such as...). Figure 7 The first intake / exhaust valve 1451, the second intake / exhaust valve 1452, the first check valve 1461, the second check valve 1462, the equalizing valve 147, and / or the throttling valve 148) are provided to users separately. For users, especially those using portable oxygen concentrators such as home oxygen generators, this requires purchasing and replacing the molecular sieve tower and each valve separately, which is costly and cumbersome. Improper assembly may also affect the overall performance and effectiveness of the oxygen generation system. This application solves this problem by integrating the molecular sieve tower and all valves into a single unit and providing it to the user. In this application, integration refers to assembling the different components and providing them to the user as a whole.

[0072] In some embodiments, the first inlet / outlet valve 1451 and the second inlet / outlet valve 1452 can be connected to and integrated with the first molecular sieve tower 1411 and the second molecular sieve tower 1412, respectively. In some embodiments, the first inlet / outlet valve 1451 and / or the second inlet / outlet valve 1452 are rotary solenoid valves. In some embodiments, the first one-way valve 1461 and the second one-way valve 1462 can be connected to and integrated with the first molecular sieve tower 1411 and the second molecular sieve tower 1412, respectively. In some embodiments, the equalizing valve 147 and / or the throttling valve 148 can be connected to and integrated with the two molecular sieve towers. By providing the valves and molecular sieve towers as a single unit, the valves and molecular sieve towers can be replaced as a single unit, and the structure of the molecular sieve module can be made more compact, reducing the space occupied, while also facilitating user purchase and installation.

[0073] It should be understood that Figure 12 The illustrated oxygen generation system is merely an example and should not be construed as limiting this application to the scope of the embodiments described. It is understood that those skilled in the art, after understanding the principles of this application, can make various modifications and changes in form and detail to the above-described oxygen generation system without departing from these principles. However, these changes and modifications do not depart from the scope of this application. In some embodiments, the first one-way valve 1461 and the second one-way valve 1462 can be replaced by a three-way valve. In some embodiments, the first intake / exhaust valve 1451 and the second intake / exhaust valve 1452 can be replaced by a two-position five-way valve, making the overall structure simpler and more convenient. Furthermore, it is understood that... Figure 10 The portion connected to the rear of the gas storage tank 150 is not shown in the diagram. In some embodiments, the portion connected to the rear of the gas storage tank 150 may be... Figures 4 to 8 And as shown in Figure 10.

[0074] Figure 13 This is a block diagram of a sensor module in an oxygen generation system according to some embodiments of this application. In some embodiments, the sensor module 170 includes a breathing sensor 172, an altitude sensor 174, a temperature sensor 178, and an acceleration sensor 176. It should be noted that the description of the sensor module 170 in this application is merely illustrative and should not limit the application to the scope of the illustrated embodiments. In some embodiments, the sensor module 170 may not include all the sensors listed above. In some embodiments, the sensor module 170 may include one or more of the breathing sensor 172, altitude sensor 174, acceleration sensor 176, temperature sensor 178, etc., in any combination.

[0075] The breathing sensor 172 can detect the user's breathing status, such as whether the user is breathing and / or inhaling, the user's breathing rate, etc. Various forms of breathing sensors can be used in this application. In some embodiments, a thermal breathing sensor can be used to obtain a breathing signal through temperature changes caused by breathing; or a differential pressure sensor can be used to obtain a breathing signal through pressure changes caused by breathing; or a humidity-sensitive breathing sensor can be used to obtain a breathing signal through humidity changes caused by breathing; or a wearable device attached to the periphery of the chest and abdomen can be used to obtain a breathing signal through the physical changes caused by the rise and fall of the chest cavity during breathing.

[0076] During normal breathing, the volume and flow rate of air during inhalation and exhalation vary with the respiratory rate. Respiratory rate refers to the number of breaths a user takes per unit of time. Generally, a higher respiratory rate results in a shorter respiratory cycle, a smaller volume of air inhaled or exhaled per breath, and a faster flow rate of air inhaled or exhaled per breath. In some embodiments, the respiratory sensor 172 can detect the user's respiratory rate. In some embodiments, the respiratory rate can be determined based on the number of breaths the user takes per minute. In some embodiments, the main control module 120 can control the oxygen flow rate based on the user's respiratory rate. Specifically, a flow regulating valve can be installed after the gas storage tank 150 to regulate the oxygen flow rate. In some embodiments, the higher the user's respiratory rate, the greater the oxygen flow rate controlled by the main control module 120. For example, at a respiratory rate of 15 breaths / minute, the oxygen flow rate is 400 ml / minute; at a respiratory rate of 30 breaths / minute, the oxygen flow rate is 720 ml / minute. In some embodiments, the main control module 120 can adjust the single oxygen delivery time based on the respiratory rate. For example, a faster respiratory rate results in a shorter single oxygen delivery time. Specifically, the main control module 120 can control the oxygen generation system to start discharging oxygen after the breathing sensor detects the user's inhalation and maintain this for a set time. In some embodiments, since the user's inhalation efficiency is highest at the very beginning of inhalation (e.g., the first 0.5 seconds, 1 second, 1.5 seconds, etc.) and then decreases, the main control module 120 can control oxygen to be dispensed only at the very beginning of the user's inhalation (e.g., the first 0.5 seconds, 1 second, 1.5 seconds, etc.), or control the system to have the maximum oxygen flow rate at the very beginning of the user's inhalation, followed by a gradual decrease in oxygen flow rate. In some embodiments, when the user starts using the oxygen generation system, they can manually set the initial oxygen flow rate and / or oxygen discharging time according to their own situation (e.g., through the interaction module 180). After this, the user's breathing rate will change, and the oxygen generation system can automatically adjust the oxygen flow rate and / or oxygen discharging time according to the changes in the user's breathing rate. In some embodiments, the main control module 120 can control the total oxygen output within a set time to be fixed while adjusting the oxygen flow rate and / or the single oxygen discharging time according to the breathing rate, regardless of the breathing rate. For example, the oxygen output per minute can be controlled to be fixed at 1 liter.

[0077] Currently, oxygen concentrators on the market either continuously spray oxygen or only spray oxygen when the user inhales. Continuous spraying results in a significant waste of oxygen and low efficiency; spraying only when the user inhales leaves a high concentration of oxygen remaining at the end of the inhalation. After diffusion, the oxygen concentration decreases, meaning the user only inhales a low concentration of oxygen at the beginning of their next inhalation. In addition, bacteria exhaled by the user remain at the end of the inhalation nozzle, and these bacteria will be carried into the nasal cavity during the user's next inhalation or the next oxygen delivery from the concentrator.

[0078] After an exhalation, people typically wait a certain period of time (e.g., 2 seconds, 1.5 seconds, 1 second) before inhaling again. This application addresses the aforementioned issues of reduced oxygen concentration and bacterial residue by releasing a small amount of oxygen (hereinafter referred to as "small-volume oxygen spray") after the user's exhalation ends and before the next inhalation begins. Specifically, when the breathing sensor 172 detects the end of the user's exhalation, the main control module 120 controls the oxygen generation system 100 to perform a small-volume oxygen spray. This can be done by releasing only a small amount of oxygen, such as 10ml, 5ml, or 3ml, or by spraying oxygen for a short duration, such as 1 second or 0.5 seconds, or by releasing only a set percentage of the normal oxygen output, such as 80%, 70%, 60%, 50%, or 30%, to ensure that this small-volume oxygen spray only occurs before the next inhalation. In some embodiments, during small-volume oxygen spray, the amount of oxygen sprayed from the nozzle each time or the duration of each spray can be determined based on the user's breathing rate. Specifically, the higher the user's breathing rate, the shorter the interval between the end of one exhalation and the start of the next inhalation, thus allowing for a smaller amount of oxygen to be sprayed or a shorter spraying time. After a small amount of oxygen is sprayed, if the breathing sensor 172 detects the user's inhalation, the main control module 120 controls the oxygen generation system to spray oxygen normally; if the breathing sensor 172 does not detect the user's inhalation, the oxygen generation system stops spraying oxygen. If, during the small amount of oxygen spraying, the breathing sensor 172 suddenly detects the user's inhalation, the main control module 120 controls the oxygen generation system to switch from the small amount of oxygen spraying to normal oxygen spraying. Through the aforementioned small amount of oxygen spraying, a higher concentration of oxygen can be left at the nozzle at the end of each exhalation for the next inhalation, while simultaneously expelling any bacteria remaining at the nozzle tip, preventing the user from inhaling these bacteria during the next inhalation or the oxygen generation system from spraying these bacteria into the user's nasal cavity during the next oxygen spraying.

[0079] Altitude sensor 174 can detect the altitude of the oxygen generation system. Various types of altitude sensors can be used in this application. In some embodiments, a barometric altimeter can be used. In some embodiments, a GPS-based altitude sensor can be used. Generally, higher altitudes are less oxygen-rich and require more oxygen. The main control module 120 can control the oxygen flow rate and / or oxygen delivery time based on the altitude. In some embodiments, the higher the altitude, the longer the oxygen delivery time. In other embodiments, the higher the altitude, the greater the total oxygen output over a period of time. For example, the higher the altitude, the greater the oxygen output per minute. In still other embodiments, the higher the altitude, the greater the oxygen flow rate. In some embodiments, when a user starts using the oxygen generation system, they can manually set the initial oxygen flow rate and / or oxygen delivery time according to actual conditions (e.g., through the interaction module 180). Afterward, the user's altitude will change, and the oxygen generation system can automatically adjust the oxygen flow rate and / or oxygen delivery time according to the altitude changes.

[0080] Accelerometer 176 can collect acceleration data to determine the user's current motion state. Various accelerometers can be used in this application, including but not limited to piezoelectric accelerometers, piezoresistive sensors, capacitive sensors, and servo sensors. In some embodiments, accelerometer 176 can be mounted on oxygen generation system 100, which moves with the user's movement; therefore, the acceleration data measured by accelerometer 176 can reflect the user's motion state. In other embodiments, accelerometer 176 can be mounted on the user's body, for example, on a wearable device (e.g., a wristband, watch, belt, glasses, helmet, etc.). In this case, accelerometer 176 can directly acquire the user's acceleration data. Generally, the acceleration of each movement during strenuous exercise is greater than the acceleration during non-strenuous exercise. For example, the acceleration of a step taken while running is greater than the acceleration of a step taken while walking. Therefore, the user's motion state can be determined through acceleration data. In some embodiments, the main control module 120 can qualitatively determine the user's motion state based on the user's acceleration data, such as whether the user is walking or running. In some embodiments, the main control module 120 can qualitatively determine the user's motion state by judging whether the acceleration value exceeds a set threshold, such as a vigorous exercise state, a moderate-intensity exercise state, or a calm state. In some embodiments, at least one acceleration threshold can be set, and the user's motion state can be determined by judging whether the user's acceleration value exceeds the corresponding acceleration threshold. In some embodiments, the main control module 120 can quantitatively determine the user's motion state based on the user's acceleration data, such as judging the intensity of the user's movement. Specifically, the larger the acceleration value, the more vigorous the user's movement. In some embodiments, the acceleration sensor 176 can be a triaxial acceleration sensor, capable of simultaneously detecting acceleration in three mutually perpendicular dimensions. The user's motion state can be determined by analyzing the acceleration in these three dimensions using at least one human motion state recognition algorithm, including but not limited to autoregressive model algorithms, pattern matching algorithms, clustering algorithms, etc. In some embodiments, a neural network model can be trained using known acceleration and human motion state data, and the trained model can determine the user's motion state based on the acceleration data.

[0081] Generally, the more intense the exercise, the higher the breathing rate, the shorter the single exhalation time, and the less oxygen inhaled per breath, but the greater the total oxygen inhalation within the same time period. Therefore, the oxygen output flow rate and / or oxygen output time of the oxygen-generating system can be adjusted according to the user's exercise state. In some embodiments, the main control module 120 can control the oxygen output flow rate and / or oxygen output time of the oxygen-generating system. Specifically, the more intense the exercise, the shorter the oxygen output time; or, the more intense the exercise, the greater the total oxygen output within a period of time; or, the more intense the exercise, the greater the oxygen output flow rate. In some embodiments, if the user's exercise state is qualitatively determined, different exercise states can correspond to different oxygen output volumes. For example, the single oxygen output volume in a resting state is 30ml, in a moderate-intensity exercise state it is 27ml, and in a vigorous exercise state it is 24ml; or, for example, the total oxygen output per minute in a resting state is 400ml, in a moderate-intensity exercise state it is 500ml, and in a vigorous exercise state it is 720ml. In some embodiments, if the intensity of the user's exercise is quantitatively determined, the oxygen output of the oxygen-generating system can be adjusted accordingly. For example, the oxygen output time is negatively correlated with the intensity of exercise, the total oxygen output over a period of time is positively correlated with the intensity of exercise, and the oxygen output flow rate is also positively correlated with the intensity of exercise.

[0082] In some embodiments, the oxygen storage tank 150 of the oxygen generating system may be equipped with a pressure sensor to detect the gas pressure in the storage tank 150. The main control module 120 can determine the oxygen flow rate and / or oxygen delivery time based on the gas pressure in the storage tank 150. In some embodiments, the higher the gas pressure in the storage tank 150, the higher the oxygen flow rate. In some embodiments, the higher the gas pressure in the storage tank 150, the longer the oxygen delivery time.

[0083] It should be noted that the above description of adjusting the oxygen output of the oxygen generating system based on data detected by the breathing sensor 172, altitude sensor 174, and acceleration sensor 176 is merely an example and should not limit this application to the scope of the embodiments described. Various other sensors can also be used in this application, and the oxygen output can be adjusted based on the data detected by these sensors. For example, a pulse sensor can be included; the higher the pulse rate, the greater the oxygen flow rate and the shorter the oxygen delivery time. A blood oxygen concentration sensor can also be included; the lower the blood oxygen concentration, the greater the oxygen flow rate. In some embodiments, the oxygen output of the oxygen generating system can be controlled by comprehensively analyzing the data collected by each sensor. In some embodiments, the oxygen flow rate and / or oxygen delivery time of the oxygen generating system can be determined using artificial intelligence methods. For example, a neural network model can be used for this purpose. Specifically, the input to the neural network model is the data collected by each sensor, and the output is the oxygen output data of the oxygen generating system. The neural network model can be trained using known sensor data and oxygen output data, and the trained model can then be used to obtain the oxygen output data based on the sensor data. For example, data such as the user's breathing rate, breathing state, exercise state, altitude, and air pressure in the storage tank, as well as the user-adjusted oxygen flow rate and / or oxygen delivery time, can be collected. This collected data can be used to train a neural network model. The model's input is the user's breathing rate, breathing state, exercise state, altitude, and / or air pressure in the storage tank, and its output is the oxygen output. The trained model can determine the appropriate oxygen flow rate and / or oxygen delivery time based on the user's breathing rate, breathing state, exercise state, altitude, and / or air pressure in the storage tank. Furthermore, personalized adjustment schemes can be customized according to specific users' usage habits. For example, a neural network model can be trained using a specific user's historical usage data to obtain a personalized oxygen output adjustment model for that user. In some embodiments, the oxygen flow rate and / or oxygen delivery time of the oxygen generating system can also be determined using machine recognition methods. For example, a mapping relationship between the detection values ​​of each sensor and the oxygen flow rate and / or oxygen delivery time can be preset. Based on the detection values ​​of each sensor during actual use and the mapping relationship, the appropriate oxygen flow rate and / or oxygen delivery time can be determined. In some embodiments, the oxygen flow rate and / or oxygen delivery time of the oxygen generation system can also be determined by cloud processing methods. For example, corresponding algorithms (such as the aforementioned neural network models, mapping relationships, etc.) can be preset on a cloud server. The oxygen generation system uploads the sensor detection values ​​to the cloud server, and the cloud server determines the appropriate oxygen flow rate and / or oxygen delivery time based on the sensor detection values.

[0084] Temperature sensor 178 can detect temperature. In some embodiments, temperature sensor 178 can be disposed on molecular sieve module 140 (e.g., molecular sieve 141) to detect the temperature of the molecular sieve. In some embodiments, temperature sensor 179 can be integrated into molecular sieve module 140. In some embodiments, molecular sieve module 140 includes a cooling fan (not shown) for dissipating heat from molecular sieve 141 to ensure the good performance of molecular sieve 141. In some embodiments, main control module 120 can adjust the speed of cooling fan according to the temperature of molecular sieve detected by temperature sensor 178. In some embodiments, when the temperature of molecular sieve exceeds a first set threshold, the cooling fan speed is increased; when the temperature of molecular sieve is lower than a second set threshold, the cooling fan speed is decreased or stopped. For example, when the temperature of molecular sieve exceeds 50 degrees Celsius, the cooling fan speed is increased; when the temperature of molecular sieve is lower than 25 degrees Celsius, the cooling fan speed is decreased. In some extreme cases, if the temperature of molecular sieve is too high or too low, continued operation of the oxygen generation system may cause serious damage to the molecular sieve; in this case, the oxygen generation system can be forcibly stopped. Specifically, when the temperature of the molecular sieve exceeds a third set threshold or falls below a fourth set threshold, the main control module 120 controls the oxygen generation system to stop operating. The third set threshold is greater than the first set threshold, and the fourth set threshold is less than the second set threshold. In some embodiments, the main control module 120 can also determine whether the duration for which the molecular sieve temperature exceeds the third set threshold or falls below the fourth set threshold exceeds a set time threshold; only when the set time threshold is exceeded will the oxygen generation system be forcibly stopped. For example, the oxygen generation system will be forcibly stopped only when the molecular sieve temperature exceeds 100 degrees Celsius or falls below 0 degrees Celsius and the duration exceeds 4 seconds. In some embodiments, after the main control module 120 controls the oxygen generation system to stop operating, it can prompt the user, for example, by displaying an interface indicating that the system has stopped operating, issuing a prompt sound (e.g., through the interaction module 180), illuminating or flashing an indicator light, or sending a reminder message to the user terminal.

[0085] In some embodiments, the cooling fan is connected to a Field Programmable Gate Array (FPGA), which can receive commands from a control module (such as the main control module 120) and adjust the fan speed accordingly. Specifically, the control module acquires the molecular sieve temperature detected by the temperature sensor 178, calculates the appropriate speed of the cooling fan at that temperature, and sends the appropriate speed data to the FPGA. The FPGA then sends a square wave with the corresponding clock frequency and duty cycle to the cooling fan based on the appropriate speed data, adjusting the pulse width modulation (PWM) of the cooling fan to thereby regulate the fan speed.

[0086] This application also provides a face mask that includes the oxygen generation system described above. Users can conveniently and portablely obtain oxygen by wearing this mask.

[0087] The beneficial effects that the embodiments of this application may bring include, but are not limited to: (1) storing the factory information and operation information of the molecular sieve through the molecular sieve information unit, the system determines the molecular sieve status based on this information, and promptly reminds the user to perform maintenance or replacement, so as to ensure the performance and effect of the oxygen generation system; (2) setting appropriate valves between the gas storage tank, the jet nozzle and the breathing sensor, and switching the valve status according to the user's inhalation or non-inhalation status and the pressure at the jet nozzle, so that a large amount of gas will not accumulate at the breathing sensor for a long time, and avoid the breathing sensor being damaged due to excessive pressure when the jet nozzle is blocked; (3) providing the user with a molecular sieve module that integrates the molecular sieve tower and the valve, so as to facilitate the user to replace the molecular sieve, ensure the performance and effect of the oxygen generation system after replacement, and the integrated molecular sieve module has a compact structure, reducing space occupation; (4) using various sensors to collect environmental data or user status data, adjusting the oxygen output of the oxygen generation system according to the data collected by the sensors, improving the efficiency of the oxygen generation system, and at the same time providing the user with a more humanized experience. It should be noted that the beneficial effects that may be produced by different embodiments are different. In different embodiments, the beneficial effects that may be produced can be any one or a combination of the above, or any other possible beneficial effects.

[0088] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0089] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic related to at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0090] Furthermore, those skilled in the art will understand that aspects of this application can be described and illustrated through several patentable types or situations, including any new and useful combination of processes, machines, products, or substances, or any new and useful improvements thereof. Accordingly, aspects of this application can be implemented entirely by hardware, entirely by software (including firmware, resident software, microcode, etc.), or by a combination of hardware and software. All of the above hardware or software may be referred to as a “data block,” “module,” “engine,” “unit,” “component,” or “system.” Furthermore, aspects of this application may manifest as a computer product located on one or more computer-readable media, the product including computer-readable program code.

[0091] Computer storage media may contain a propagated data signal containing computer program code, for example, on baseband or as part of a carrier wave. This propagated signal may take various forms, including electromagnetic, optical, and suitable combinations thereof. Computer storage media can be any computer-readable medium other than a computer-readable storage medium, which can be connected to an instruction execution system, apparatus, or device to enable communication, propagation, or transmission of a program for use. The program code located on the computer storage medium can be propagated through any suitable medium, including radio, cable, fiber optic cable, RF, or similar media, or any combination of the above media.

[0092] The computer program code required for the operation of each part of this application can be written in any one or more programming languages, including object-oriented programming languages ​​such as Java, Scala, Smalltalk, Eiffel, JADE, Emerald, C++, C#, VB.NET, Python, etc., conventional procedural programming languages ​​such as C, Visual Basic, Fortran 2003, Perl, COBOL 2002, PHP, ABAP, dynamic programming languages ​​such as Python, Ruby, and Groovy, or other programming languages. This program code can run entirely on the user's computer, or as a standalone software package on the user's computer, or partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the latter case, the remote computer can be connected to the user's computer through any network, such as a local area network (LAN) or wide area network (WAN), or connected to an external computer (e.g., via the Internet), or in a cloud computing environment, or used as a service such as Software as a Service (SaaS).

[0093] Furthermore, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this application are not intended to limit the order of the processes and methods of this application. Although some embodiments that are currently considered useful have been discussed through various examples in the foregoing disclosure, it should be understood that such details are for illustrative purposes only, and the appended claims are not limited to the disclosed embodiments; rather, the claims are intended to cover all modifications and equivalent combinations that conform to the substance and scope of the embodiments of this application. For example, while the system components described above can be implemented by hardware devices, they can also be implemented solely by software solutions, such as installing the described system on existing servers or mobile devices.

[0094] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

Claims

1. An oxygen generation system, characterized in that, include: Gas storage tanks are used to store oxygen; The nozzle is used to spray oxygen to the user; A pressure sensor is disposed at the jet nozzle to detect the pressure at the jet nozzle; An oxygen delivery pipeline is installed between the air outlet and the gas storage tank; A breathing sensor, connected to the oxygen delivery line via a bypass line, is used to detect the user's breathing status; An oxygen supply valve is installed on the oxygen delivery pipeline and is used to open and close the oxygen delivery pipeline. The main control module is used for: Before the formal oxygen injection, the oxygen supply valve is opened to allow the gas storage tank to deliver a set amount of oxygen to the jet nozzle. After the gas storage tank delivers a set amount of oxygen to the jet nozzle, in response to the pressure sensor detecting that the pressure at the jet nozzle exceeds a set pressure threshold, the oxygen supply valve is controlled to block the oxygen delivery pipeline to stop oxygen injection; in response to the pressure sensor detecting that the pressure at the jet nozzle does not exceed the set pressure threshold, the oxygen supply valve is controlled to continue to open for regular oxygen injection. In response to the breathing sensor detecting the end of the user's exhalation, the air jet is controlled to spray a set amount of oxygen after the user's exhalation ends and before the next inhalation.

2. The oxygen generation system as described in claim 1, characterized in that, The oxygen generation system also includes a molecular sieve module; the molecular sieve module includes a molecular sieve and a molecular sieve information unit, the molecular sieve information unit being used to store information about the molecular sieve.

3. The oxygen generation system as described in claim 2, characterized in that, The information of the molecular sieve includes its design life, cumulative operating time, temperature, operating status, altitude, and / or location.

4. The oxygen generation system as described in claim 2, characterized in that, When the molecular sieve module leaves the factory, the molecular sieve information unit stores the official information of the molecular sieve, which includes a unique official identifier and / or other official information; The main control module is used to read the identification information and / or other information of the molecular sieve from the molecular sieve information unit; In response to at least one of the following conditions, the main control module controls the oxygen generation system to stop operating and / or issues a reminder: The molecular sieve identification information was not read. The identification information of the molecular sieve read does not match the unique official identifier; The molecular sieve identification information read matches the unique official identifier, but other information about the molecular sieve does not match the other official information.

5. The oxygen generation system as described in claim 1, characterized in that, A two-position three-way valve is provided at the connection between the oxygen supply pipeline and the bypass pipeline. The two-position three-way valve connects the jet nozzle and the breathing sensor at the initial moment when the oxygen generation system is started. The main control module is also used to control the connection state of the two-position three-way valve, wherein: In response to the breathing sensor detecting that the user is inhaling, the main control module controls the two-position three-way valve to connect the air tank and the air jet nozzle, and maintains this connection for a set time; After the set time, the main control module controls the two-position three-way valve to connect the jet nozzle and the breathing sensor.

6. The oxygen generation system as described in claim 5, characterized in that, The bypass pipeline is equipped with a check valve; the main control module is also used for: After the set time, the one-way valve is controlled to connect the bypass line to the atmosphere to discharge the gas in the bypass line; Alternatively, in response to the pressure at the breathing sensor exceeding a set pressure threshold, the one-way valve is controlled to connect the bypass line to the atmosphere to discharge the gas in the bypass line.

7. The oxygen generation system as described in claim 1, characterized in that, The bypass pipeline is equipped with a bypass valve for opening and closing the bypass pipeline; During oxygen injection, the main control module controls the oxygen supply valve to open the oxygen delivery pipeline, and the bypass valve to block the bypass pipeline; When oxygen supply ends, the main control module controls the oxygen supply valve to block the oxygen delivery pipeline. Simultaneously, In response to the pressure sensor detecting that the pressure at the jet nozzle exceeds a set pressure threshold, the bypass valve is controlled to continue blocking the bypass line; In response to the pressure sensor detecting that the pressure at the jet nozzle does not exceed a set pressure threshold, the bypass valve is controlled to open so that the breathing sensor can detect the user's breathing.

8. The oxygen generation system as described in claim 2, characterized in that, The oxygen generation system also includes: A temperature sensor is used to detect the temperature of the molecular sieve, and the temperature sensor is integrated on the molecular sieve. A cooling fan is used to dissipate heat from the molecular sieve; The main control module is also used to control the oxygen generation system according to the temperature of the molecular sieve, wherein: In response to the temperature of the molecular sieve exceeding a first preset threshold, the main control module controls the cooling fan to increase its rotation speed. In response to the temperature of the molecular sieve falling below a second preset threshold, the main control module controls the cooling fan to reduce its speed.

9. The oxygen generation system as described in claim 1, characterized in that, The oxygen generation system also includes an acceleration sensor, an altitude sensor, and / or a pressure sensor located in the gas storage tank; the breathing sensor is also used to detect the user's breathing rate; the acceleration sensor is used to detect the user's movement state; the altitude sensor is used to detect the altitude of the oxygen generation system; and the pressure sensor is used to detect the pressure in the gas storage tank. The main control module is also used to adjust the oxygen flow rate and / or oxygen delivery time according to the user's breathing rate, breathing state, exercise state, altitude and / or pressure in the gas storage tank. Wherein, the oxygen flow rate and / or oxygen delivery time are determined by artificial intelligence, machine recognition and / or cloud processing methods; wherein, the artificial intelligence method is implemented through a neural network model, the input of the model is the user's breathing rate, breathing state, exercise state, altitude of the oxygen generation system and / or pressure in the gas storage tank, and the output of the model is the oxygen flow rate and / or oxygen delivery time.

10. A control method for a non-therapeutic oxygen generation system, characterized in that, The oxygen generation system includes a gas storage tank for storing oxygen; a jet nozzle for spraying oxygen to the user; and a pressure sensor located at the jet nozzle for detecting the pressure at the jet nozzle. An oxygen delivery pipeline is installed between the air outlet and the gas storage tank; A breathing sensor, connected to the oxygen delivery line via a bypass line, is used to detect the user's breathing status; An oxygen supply valve is installed on the oxygen delivery pipeline and is used to open and close the oxygen delivery pipeline. The method is executed by the main control module, and the method includes: Before the formal oxygen injection, the oxygen supply valve is opened to allow the gas storage tank to deliver a set amount of oxygen to the jet nozzle. After the gas storage tank delivers a set amount of oxygen to the jet nozzle, the pressure at the jet nozzle detected by the pressure sensor is obtained; In response to the pressure at the jet nozzle exceeding a set pressure threshold, the oxygen supply valve is controlled to block the oxygen delivery pipeline to stop oxygen injection; in response to the pressure at the jet nozzle not exceeding the set pressure threshold, the oxygen supply valve is controlled to continue to open for regular oxygen injection. Acquire the user's breathing status detected by the breathing sensor; In response to the breathing sensor detecting the end of the user's exhalation, the air jet is controlled to spray a set amount of oxygen after the user's exhalation ends and before the next inhalation.

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