阅读说明：本技术 一种加压增氧装置的空气和/或氧气通气控制系统及方法 (Air and/or oxygen ventilation control system and method of pressurization oxygenation device ) 是由 刘健民 秦昊 王长龙 于 2021-10-20 设计创作，主要内容包括：本发明公开了一种加压增氧装置的空气和/或氧气通气控制系统及方法,其包括空气增压单元、供氧单元、供电单元、控制单元和呼吸单元；空气增压单元包括新鲜空气入口、空气过滤器、增压泵和增压空气出口；供氧单元包括氧源、减压阀、比例阀和供氧出口；控制单元包括主控器、增压泵驱动电路、比例阀驱动电路、流量传感器、流量传感器信号采集电路、空气或氧气管路压力传感器和压力信号采集电路；呼吸单元包括主动加温湿化呼吸管路、鼻枕或鼻罩、吸氧管。上述单元不同组合可以实现增压增氧供气方式、增压空气供气方式,增氧供气方式。(The invention discloses an air and/or oxygen ventilation control system and method of a pressurization oxygenation device, which comprises an air pressurization unit, an oxygen supply unit, a power supply unit, a control unit and a breathing unit, wherein the air pressurization unit is used for providing air for a user; the air supercharging unit comprises a fresh air inlet, an air filter, a booster pump and a supercharged air outlet; the oxygen supply unit comprises an oxygen source, a pressure reducing valve, a proportional valve and an oxygen supply outlet; the control unit comprises a main controller, a booster pump driving circuit, a proportional valve driving circuit, a flow sensor signal acquisition circuit, an air or oxygen pipeline pressure sensor and a pressure signal acquisition circuit; the breathing unit comprises an active heating and humidifying breathing pipeline, a nasal pillow or a nasal mask and an oxygen inhalation tube. Different combinations of the units can realize a pressurization oxygenation air supply mode, a pressurization air supply mode and an oxygenation air supply mode.)

1. An air and/or oxygen ventilation control system for a pressurized oxygen aeration device, comprising: the oxygen supply device comprises an air pressurization unit (300), an oxygen supply unit (400) and a control unit (200);

the control unit (200) comprises a main controller (201), a flow sensor (205), an air pipeline pressure sensor (204) and an oxygen pipeline pressure sensor (203), wherein the main controller (201) is respectively connected with the flow sensor (205), the air pipeline pressure sensor (204) and the oxygen pipeline pressure sensor (203);

the main controller (201) is connected with a booster pump (304) in the air pressurization unit (300), and the flow sensor (205) and the air pipeline pressure sensor (204) are both connected with an air pipeline of the air pressurization unit (300);

the main controller (201) is connected with a proportional valve (405) in the oxygen supply unit (400), and the oxygen pipeline pressure sensor (203) is connected with an oxygen pipeline in the oxygen supply unit (400).

2. The air and/or oxygen ventilation control system of a pressurized oxygen increasing device according to claim 1, wherein the control unit (200) further comprises an input module, the main controller (201) obtains different operation mode commands input by the input module, and controls the pressurized oxygen increasing device to operate in any one of the following three operation modes according to the operation mode commands:

the first method comprises the following steps: the control unit (200) is used in combination with the air pressurizing unit (300) and the oxygen supply unit (400), the main controller (201) controls the operation state of the pressurizing pump (304) to pressurize gas, oxygen is supplied by controlling the opening and closing of the proportional valve (405), and finally mixed gas with the pressure higher than the ambient pressure and the ambient oxygen concentration is provided for a user through the breathing unit (60);

and the second method comprises the following steps: the control unit (200) is used in combination with the air pressurization unit (300), the main controller (201) controls the operation state of the pressurization pump (304) to pressurize the air, and the air gas higher than the ambient pressure is provided for the user through the breathing unit (60);

and the third is that: the control unit (200) is used in combination with the oxygen supply unit (400), the main controller (201) supplies oxygen by controlling the opening and closing of the proportional valve (405), and gas with the concentration higher than that of oxygen in air is supplied to a user through the breathing unit (60).

3. The air and/or oxygen ventilation control system of a pressurized oxygen increasing device according to claim 1, wherein the air pressurizing unit (300) further comprises an air filter (302), the air filter (302) being connected to an air inlet of the pressurizing pump (304).

4. The air and/or oxygen ventilation control system of a pressurized oxygen increasing device according to claim 1, wherein the oxygen supply unit (400) further comprises a pressure reducing valve (403), the pressure reducing valve (403) being mounted between the oxygen source (401) and the proportional valve (405).

5. An air and/or oxygen ventilation control system for a pressurized oxygen aeration device according to claim 3 or 4, characterized in that the air pressurizing unit (300) and the oxygen supply unit (400) are both connected with a breathing unit (60), the breathing unit (60) comprises an active heating and humidifying breathing pipeline (61), a nasal pillow (63), a nasal mask (62) and an oxygen uptake pipe (65), the active warming and humidifying breathing pipeline (61) is connected with a pressurized air outlet (306) of the air pressurizing unit (300), the nose pillow (63) or the nose mask (62) is connected with the active warming and humidifying breathing pipeline (61), one end of the oxygen absorption pipe (65) is connected with an oxygen supply outlet (406) of the oxygen supply unit (400), the other end of the oxygen inhalation tube (65) is connected with the side surface of the nasal pillow (63) or the nasal mask (62).

6. An air and/or oxygen ventilation control system of a pressurized oxygen increasing device according to claim 1, further comprising a power supply unit (50), said power supply unit (50) comprising a rechargeable pack and a charge and discharge management circuit.

7. The air and/or oxygen ventilation control system of a pressurized oxygen increasing device according to claim 2, wherein the control unit (200) controls the air pressurizing unit (300), the main controller (201) judges the breathing phase of the user by receiving the information of the flow rate of the gas in the airway collected by the flow sensor (205), the gas at a first set pressure higher than the ambient pressure is provided at the inhalation phase of the user, the gas at a second set pressure higher than the ambient pressure is provided at the exhalation phase of the user, and the first set pressure is greater than or equal to the second set pressure.

8. The air and/or oxygen ventilation control system of a pressurized oxygen increasing device according to claim 2, wherein the control unit (200) controls the oxygen supply unit (300) to connect to the user interface (60) through the oxygen supply outlet (406) during a certain period of time during the initial period of the user's inhalation phase.

9. A method of controlling the aeration of air and/or oxygen based on a pressurized aeration device according to claim 1, comprising:

s1, the flow sensor collects the gas flow rate information of each breath of a user in the air pipeline in real time and sends the gas flow rate information to the main controller;

s2, the main controller fits the gas flow velocity waveform according to the acquired gas flow velocity information and the least square method, and the breathing phase of the user is judged;

s3, the main controller receives three different combined working mode instructions:

when a first working mode is received, the main controller controls the running speed of the booster pump and controls the opening and closing of the proportional valve;

when a second working mode is received, the main controller controls the running speed of the booster pump;

and when the third working mode is received, the main controller controls the opening and closing of the proportional valve.

10. The method for controlling air and/or oxygen ventilation of a pressurized oxygen increasing device according to claim 9, wherein S3 further comprises:

firstly, when a first working mode is operated, the specific steps are as follows:

when a user is in an air suction phase, the main controller controls the booster pump to increase the pressure of the air passage to a set first pressure higher than the ambient air pressure; the main controller controls the proportional valve to open a certain opening degree, and high-pressure air-oxygen mixed gas is provided for a user;

after a certain time of the inhalation phase, the main controller controls the proportional valve to stop supplying oxygen to the user, and then supplies air with increased pressure to the first pressure for the user;

at the beginning of an expiratory phase, the main controller controls the booster pump to increase the air airway pressure to a set second pressure higher than the ambient air pressure, wherein the second pressure is less than or equal to the first pressure;

secondly, when the second working mode is operated, the specific steps are as follows:

when a user is in an air suction phase, the main controller controls the booster pump to increase the pressure of the air passage to a set first pressure higher than the ambient air pressure;

after a certain time of the air suction phase, the main controller controls the booster pump to provide air with increased pressure to a first pressure for a user;

at the beginning of an expiratory phase, the main controller controls the booster pump to increase the air airway pressure to a set second pressure higher than the ambient air pressure, wherein the second pressure is less than or equal to the first pressure;

when the third working mode is operated, the specific steps are as follows:

when a user is in an inspiratory phase, the main controller controls the proportional valve to open by a certain opening degree;

after the inspiratory phase starts for a certain time, the main controller controls the proportional valve to stop supplying oxygen to the user;

and at the beginning of the expiratory phase, the main controller controls the proportional valve to stop supplying oxygen to the user.

Technical Field

The invention relates to the field of air/oxygen ventilation control, in particular to an air and/or oxygen ventilation control system and method of a pressurization oxygen increasing device.

Background

China is a country with a vast plateau area, plateaus with an altitude of more than 2500 m occupy more than 1/4 of the territorial area of China, and the living is 6000-8000 ten thousand of people. As the altitude increases, the atmospheric pressure decreases gradually, the air becomes thinner and thinner, and the partial pressure of oxygen (PiO2) inhaled by the human body decreases, resulting in hypoxia. Altitude hypoxia affects various tissue systems of the body, causing physical strength, thinking, orientation and memory function to decline and even producing hallucinations. The long-term life in the low-pressure and oxygen-poor environment of the plateau can cause the function change of tissues and organs, and lead to chronic altitude diseases (CMS-serum Mountain Sickness) characterized by erythrocytosis and hypoxemia to cause clinical symptoms such as blood pressure increase, heart hypofunction, pulmonary hypertension and the like, once the CMS appears, the CMS is often irreversible and seriously threatens the health of people, and researches show that the incidence rate of the CMS reaches 17.8 percent. Meanwhile, people in the altitude area can quickly enter a plateau with the altitude of more than 3000 meters or enter a higher altitude area from the plateau, Acute altitude reaction, plateau pulmonary edema, cerebral edema and the like can be induced, and Acute altitude diseases (AMS-Acute Mountain Sickness) are caused, and researches show that the AMS incidence rate is 60.19% the next day after healthy young men in the life-span plain quickly enter the plateau with the altitude of 3700 meters; the AMS incidence reaches 34.65% the day after one month of 3600 m plateau and rapidly progresses to 4400 m plateau.

The prevention and treatment of the altitude anoxia for a long time are developed around two aspects of pressurization and oxygenation, the existing pressurized air respirator adopts a fan as an air source, the pressure is low, the existing pressurized air respirator works under one pressure all the time, the control and regulation are lacked, the effect is poor, the oxygen cylinder oxygen inhalation used at present is continuous flow oxygen inhalation, the waste is serious, and a pressurization or oxygen supply machine with only a single function obviously cannot meet the requirement in the severe and variable environment of the altitude.

Disclosure of Invention

The invention provides an air and/or oxygen ventilation control system and method of a pressurization oxygen increasing device, and aims to solve the problems that the conventional plateau pressurization oxygen increasing device is single in function, cannot be suitable for a plateau complex environment and is inconvenient to apply.

In order to achieve the purpose, the technical scheme of the invention is as follows:

an air and/or oxygen ventilation control system for a pressurized oxygen aeration device comprising: the device comprises an air pressurization unit, an oxygen supply unit and a control unit;

the control unit comprises a main controller, a flow sensor, an air pipeline pressure sensor and an oxygen pipeline pressure sensor, wherein the main controller is respectively connected with the flow sensor, the air pipeline pressure sensor and the oxygen pipeline pressure sensor;

the main controller is connected with a booster pump in the air pressurization unit, and the flow sensor and the air pipeline pressure sensor are both connected with an air pipeline of the air pressurization unit;

the main controller is connected with a proportional valve in the oxygen supply unit, and the oxygen pipeline pressure sensor is connected with an oxygen pipeline in the oxygen supply unit.

Further, the control unit further comprises an input module, the main controller obtains different working mode instructions input by the input module, and controls the pressurizing and pressurizing device to work in any one of the following three working modes according to the working mode instructions:

the first method comprises the following steps: the control unit is used in combination with the air pressurization unit and the oxygen supply unit, the main controller controls the operation state of the pressurization pump to pressurize gas, oxygen is supplied by controlling the opening and closing of the proportional valve, and finally mixed gas with the pressure higher than the ambient pressure and the ambient oxygen concentration is supplied to a user through the breathing unit;

and the second method comprises the following steps: the control unit is used in combination with the air pressurization unit, the main controller controls the operation state of the pressurization pump to pressurize air, and air gas higher than ambient air pressure is provided for a user through the breathing unit;

and the third is that: the control unit is used with the oxygen suppliment unit combination, the main controller carries out the oxygen suppliment through opening and shutting of control proportional valve, provides the gas that is higher than air oxygen concentration for the user through respiratory unit.

Further, the air pressurizing unit further comprises an air filter, and the air filter is connected with an air inlet of the pressurizing pump.

Further, the oxygen supply unit further comprises a pressure reducing valve, and the pressure reducing valve is installed between the oxygen source and the proportional valve.

Further, the air pressure boost unit with the oxygen suppliment unit all is connected with the respiratory unit, the respiratory unit is including initiatively heating humidifying breathing line, nose pillow, nose cup and oxygen tube, initiatively heat humidifying breathing line with the pressurized air exit linkage of air pressure boost unit, nose pillow or nose cup with initiatively heat humidifying breathing line and connect, the one end of oxygen tube with the oxygen suppliment exit linkage of oxygen suppliment unit, the other end of oxygen tube with the side of nose pillow or nose cup is connected.

Further, the charging and discharging management system further comprises a power supply unit, wherein the power supply unit comprises a rechargeable group and a charging and discharging management circuit.

Further, the control unit controls the air pressurization unit, the main controller judges the breathing phase of the user through the collected information of the gas flow rate in the air passage collected by the flow sensor, the gas with the first set pressure higher than the ambient pressure is provided in the inhalation phase of the user, the gas with the second set pressure higher than the ambient pressure is provided in the exhalation phase of the user, and the first set pressure is larger than or equal to the second set pressure.

Furthermore, the control unit controls the oxygen supply unit to be connected with the user interface through an oxygen supply outlet within a certain time period at the initial stage of the inhalation phase of the user.

A method of air and/or oxygen ventilation control for a pressurized oxygen aeration apparatus comprising:

s1, the flow sensor collects the gas flow rate information of each breath of a user in the air pipeline in real time and sends the gas flow rate information to the main controller;

s2, the main controller fits the gas flow velocity waveform according to the gas flow velocity information and the least square method, and the breathing phase of the user is judged;

s3, the main controller receives three different combined working mode instructions:

when a first working mode is received, the main controller controls the running speed of the booster pump and controls the opening and closing of the proportional valve;

when a second working mode is received, the main controller controls the running speed of the booster pump;

and when the third working mode is received, the main controller controls the opening and closing of the proportional valve.

Further, S3 further includes:

firstly, when a first working mode is operated, the specific steps are as follows:

when a user is in an air suction phase, the main controller controls the booster pump to increase the pressure of the air passage to a set first pressure higher than the ambient air pressure; the main controller controls the proportional valve to open a certain opening degree, and high-pressure air-oxygen mixed gas is provided for a user;

after a certain time of the inhalation phase, the main controller controls the proportional valve to stop supplying oxygen to the user, and then supplies air with increased pressure to the first pressure for the user;

at the beginning of an expiratory phase, the main controller controls the booster pump to increase the air airway pressure to a set second pressure higher than the ambient air pressure, wherein the second pressure is less than or equal to the first pressure;

secondly, when the second working mode is operated, the specific steps are as follows:

when a user is in an air suction phase, the main controller controls the booster pump to increase the pressure of the air passage to a set first pressure higher than the ambient air pressure;

after a certain time of the air suction phase, the main controller controls the booster pump to provide air with increased pressure to a first pressure for a user;

at the beginning of an expiratory phase, the main controller controls the booster pump to increase the air airway pressure to a set second pressure higher than the ambient air pressure, wherein the second pressure is less than or equal to the first pressure;

when the third working mode is operated, the specific steps are as follows:

when a user is in an inspiratory phase, the main controller controls the proportional valve to open by a certain opening degree;

after the inspiratory phase starts for a certain time, the main controller controls the proportional valve to stop supplying oxygen to the user;

and at the beginning of the expiratory phase, the main controller controls the proportional valve to stop supplying oxygen to the user.

Has the advantages that: the invention mainly provides a respiratory system capable of combining pressurization and oxygenation, which solves the problems of thin air and low oxygen concentration in the plateau environment through different combination modes of pressurization and oxygenation, and solves the problems that the conventional plateau pressurization and oxygenation device is single in function, cannot be suitable for the plateau complex environment and is inconvenient to apply.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an air and/or oxygen ventilation control system and method for a pressurized oxygen aeration apparatus according to the present invention;

FIG. 2 is a schematic diagram of a control unit of the air and/or oxygen aeration control system and method of the pressurized oxygen aeration apparatus according to the present invention;

FIG. 3 is a schematic view of the air and/or oxygen aeration control system and method of a pressurized oxygen aeration apparatus according to the present invention, showing the combined use of the control unit and the air pressurizing unit;

FIG. 4 is a schematic view of the air and/or oxygen aeration control system and method of a pressurized oxygen aeration apparatus according to the present invention, showing the combined use of the control unit and the oxygen supply unit;

FIG. 5 is a flow chart of an air and/or oxygen ventilation control system and method for a pressurized oxygen aeration apparatus according to the present disclosure;

in the figure: 50. a power supply unit, 200, a control unit, 201, a master controller, 203, an oxygen pipeline pressure sensor, 700, an oxygen pipeline pressure acquisition channel, 204, an air pipeline pressure sensor, 600, an air pipeline pressure acquisition channel, 205, a flow sensor, 500, a flow sensor gas channel, 300, an air pressurizing unit, 301, an air inlet, 302, an air filter, 303, a clean air airway, 304, a pressurizing pump, 305, an air airway higher than ambient pressure, 306, a pressurized air outlet, 400, an oxygen supply unit, 401, an oxygen source, 402, a high-pressure oxygen airway, 403, a pressure reducing valve, 404, a low-pressure oxygen airway, 405, a proportional valve, 407, an oxygen airway, 406, an outlet, 60, a breathing unit, 61, an active heating and humidifying breathing pipeline, 62, a nasal mask, 63, a nasal pillow, 65, an oxygen inhalation tube, 800, a first communication cable, 900, a second communication cable, 206. a flow signal acquisition circuit 207, a pressure signal acquisition circuit 208, a proportional valve driving circuit 209 and a booster pump driving circuit.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present embodiment provides an air and/or oxygen ventilation control system of a pressurized oxygen increasing device, as shown in fig. 1, comprising: an air pressurizing unit 300, an oxygen supply unit 400, a control unit 200, a power supply unit 50, and a breathing unit 60;

as shown in fig. 2, the control unit 200 includes a master controller 201, a flow sensor 205, an air line pressure sensor 204 and an oxygen line pressure sensor 203, the flow sensor 205 is connected to the master controller 201 through a flow signal acquisition circuit 206, the air line pressure sensor 204 and the oxygen line pressure sensor 203 are both connected to the master controller 201 through a pressure signal acquisition circuit 207, the booster pump 304 is connected to a booster pump driving circuit 209 through a first signal cable 800, the booster pump driving circuit 209 performs data transmission with the master controller 201, the proportional valve 405 is connected to a proportional valve driving circuit 208 through a second signal cable 900, and the proportional valve driving circuit 208 performs data transmission with the master controller 201;

the main controller 201 is connected with a booster pump 304 in the air pressurizing unit 300, the flow sensor 205 and the air line pressure sensor 204 are both connected with an air pipeline of the air pressurizing unit 300, the booster pump 304 is connected with a pressurized air outlet 306 through an air channel 305 with a pressure higher than the ambient pressure, and a flow sensor gas channel 500 and an air line pressure acquisition channel 600 connected with the flow sensor 205 and the air line pressure sensor 204 are respectively connected with the air channel 305 with the pressure higher than the ambient pressure;

the main controller 201 is connected with a proportional valve 405 in the oxygen supply unit 400, the oxygen line pressure sensor 203 is connected with an air line in the oxygen supply unit 400, and the proportional valve 405 is connected with an oxygen supply outlet 406 through an oxygen passage 407.

In a specific embodiment, there are three different combined operating modes according to different external operating conditions, when the control unit 200 receives start commands of different instructions, the main controller 201 boosts air by controlling the operating state of the booster pump 304, the main controller 201 determines a respiratory phase by using the airflow information provided by the flow sensor 205, and supplies oxygen by controlling the opening of the proportional valve 405, where the three different combined operating modes are as follows:

the first method comprises the following steps: the control unit 200 is used in combination with the air pressurizing unit 300 and the oxygen supply unit 400, the main controller 201 controls the pressurizing pump 304 to pressurize the air, controls the opening and closing of the proportional valve 405 to increase oxygen, and finally provides the mixed gas with the ambient pressure and the ambient oxygen concentration for the user through the breathing unit 60;

and the second method comprises the following steps: the control unit 200 is used in combination with the air pressurizing unit 300, the main controller 201 pressurizes air by controlling the pressurizing pump 304, and provides air gas higher than ambient pressure for a user through the breathing unit 60;

and the third is that: the control unit 200 is used in combination with the oxygen supply unit 400, and the main controller 201 supplies oxygen by controlling the proportional valve 405, and provides oxygen higher than oxygen for the user through the breathing unit 60.

In a specific embodiment, the air supercharging unit 300 further includes an air filter 302, the air filter 302 is connected to the air inlet of the supercharging pump 304 through a clean air duct 303, and by adding the air filter 302, the pressurized air provided by the oxygenation pump 304 can be cleaner and cleaner, the influence of impurities in the air on the respiratory tract can be reduced, and meanwhile, the air filter is installed at the air inlet of the supercharging pump through the clean air duct, so that dust can be prevented from entering the supercharging pump, and the service life of the supercharging pump can be prolonged.

In a specific embodiment, the oxygen supply unit 400 further includes a pressure reducing valve 403, the pressure reducing valve 403 is installed between and connected to the oxygen source 401 and the proportional valve 405, the oxygen source 401 is connected to the pressure reducing valve 403 through the high-pressure oxygen gas channel 402, the pressure reducing valve 403 is connected to the proportional valve 405 through the low-pressure oxygen gas channel 404, the oxygen in the oxygen source 401 is high-pressure oxygen gas, and by providing the pressure reducing valve 403, the oxygen pressure in the oxygen source can be reduced, and meanwhile, the waste of the oxygen gas can also be reduced.

In the specific embodiment, the air charge unit 300 with the oxygen suppliment unit 400 all is connected with the respiratory unit 60, the respiratory unit 60 is including initiatively warming humidifying breathing pipe 61, nose pillow 63, nose cup 62 and oxygen uptake pipe 65, initiatively warming humidifying breathing pipe 61 with the forced air export 306 of air charge unit 300 is connected, nose pillow 63 or nose cup 62 with initiatively warming humidifying breathing pipe 61 is connected, the one end of oxygen uptake pipe 65 with the oxygen suppliment export 406 of oxygen suppliment unit 400 is connected, the other end of oxygen uptake pipe 65 with the side of nose pillow 63 or nose cup 62 is connected, initiatively warming humidifying breathing pipe 61 has initiatively warming humidifying function, can withdraw the heat and the vapor of user's exhalation.

In a specific embodiment, the oxygen aeration control system further includes a power supply unit 50, the power supply unit 50 includes a rechargeable battery pack and a charging and discharging management circuit, the power supply unit 50 supplies power to the control unit 200, the rechargeable battery pack can be conveniently carried, the charging and discharging management circuit can be more fully suitable for the battery capacity, and the standby time of the air and/or oxygen aeration control system of the pressurized oxygen aeration device of the present application can be longer.

In a specific embodiment, the control unit 200 controls the air pressurizing unit 300 to provide air at a first set pressure higher than the ambient air pressure during the user inhalation phase and at a second set pressure higher than the ambient air pressure during the user exhalation phase, wherein the first set pressure is greater than or equal to the second set pressure.

In a specific embodiment, the control unit 200 controls the oxygen supply unit 300 to connect to the user interface 60 through the oxygen supply outlet 406 in a certain time period at the initial stage of the user inhalation phase, so as to provide oxygen for the user; at the end of the user's inspiratory phase and expiratory phase, the supply of oxygen to the user is stopped.

The present embodiment provides a method for controlling air and/or oxygen ventilation of a pressurized oxygen increasing device, as shown in fig. 5, including:

s1, the flow sensor collects the gas flow rate information of each breath of a user in the air pipeline in real time and sends the gas flow rate information to the main controller;

s2, the main controller fits the gas flow velocity waveform according to the gas flow velocity information and the least square method, and the breathing phase of the user is judged;

s3, the main controller receives three different combined working mode instructions:

when a first working mode is received, the main controller controls the running speed of the booster pump and controls the opening and closing of the proportional valve;

when a second working mode is received, the main controller controls the running speed of the booster pump;

and when the third working mode is received, the main controller controls the opening and closing of the proportional valve.

Wherein, in step S3, the method further includes:

firstly, when a first working mode is operated, the specific steps are as follows:

when a user is in an air suction phase, the main controller controls the booster pump to increase the pressure of the air passage to a set first pressure higher than the ambient air pressure; the main controller controls the proportional valve to open a certain opening degree, and high-pressure air-oxygen mixed gas is provided for a user;

after a certain time of the inhalation phase, the main controller controls the proportional valve to stop supplying oxygen to the user, and then supplies air with increased pressure to the first pressure for the user;

at the beginning of an expiratory phase, the main controller controls the booster pump to increase the air airway pressure to a set second pressure higher than the ambient air pressure, wherein the second pressure is less than or equal to the first pressure;

secondly, when the second working mode is operated, the specific steps are as follows:

when a user is in an air suction phase, the main controller controls the booster pump to increase the pressure of the air passage to a set first pressure higher than the ambient air pressure;

after a certain time of the air suction phase, the main controller controls the booster pump to provide air with increased pressure to a first pressure for a user;

at the beginning of an expiratory phase, the main controller controls the booster pump to increase the air airway pressure to a set second pressure higher than the ambient air pressure, wherein the second pressure is less than or equal to the first pressure;

when the third working mode is operated, the specific steps are as follows:

when a user is in an inspiratory phase, the main controller controls the proportional valve to open by a certain opening degree;

after the inspiratory phase starts for a certain time, the main controller controls the proportional valve to stop supplying oxygen to the user;

and at the beginning of the expiratory phase, the main controller controls the proportional valve to stop supplying oxygen to the user.

Specifically, the working mode and the three working states which can be completed by the invention are as follows:

the flow sensor 205 is connected to the air passage 305 of the air pressurizing unit 300 through the air passage 500, which is higher than the ambient pressure, and detects a gas flow rate signal in the air passage in real time, and the main controller 201 collects the flow rate signal output by the flow sensor 205 through the flow signal acquisition circuit 206 at regular time intervals, such as 5 milliseconds, so as to discriminate a breathing phase, an inspiratory phase or an expiratory phase of a user;

the air pipeline pressure sensor 204 is connected to the air pipeline 305 of the air supercharging unit 300 through the air pipeline 600, which is higher than the ambient pressure, and detects a gas pressure signal in the air pipeline in real time, and the master controller 201 collects a pressure signal output by the air pipeline pressure sensor 204 through the pressure signal acquisition circuit 207 at regular time intervals, such as 5 milliseconds, so as to monitor the gas pressure of the air pipeline 305;

the oxygen pipeline pressure sensor 203 is connected to the oxygen gas channel 407 of the oxygen supply unit 400 through the gas channel 700 to detect a gas pressure signal in the gas channel in real time, and the main controller 201 collects the pressure signal output by the oxygen pipeline pressure sensor 203 through the pressure signal acquisition circuit 207 at regular time intervals, such as 5 milliseconds, so as to monitor the gas pressure of the oxygen gas channel 407;

the main controller 201 controls the operation state of the booster pump 304 and the opening degree of the proportional valve 405 according to the information collected by the flow sensor 205, the air line pressure sensor 204 and the oxygen line pressure sensor 203;

the air 301 enters a clean air airway 303 through an air filter 302, high-pressure clean air enters an air airway 305 through a booster pump 304, enters an active heating and humidifying breathing pipeline 61, a nasal pillow 63 or a nasal mask 62 through a pressurized air outlet 306, enters the respiratory tract of a user, and provides high-pressure clean air for the user;

high-pressure oxygen 402 of oxygen source 401 passes through relief pressure valve 403, outputs low-pressure oxygen 404, and this low-pressure oxygen 404 passes through the proportional valve and gets into oxygen air flue 407, and oxygen air flue 407 connects in oxygen suppliment export 406, connects in the mixed oxygen interface of nasal pillow or nose cup through the oxygen uptake pipe, or through the nasal suction pipe for low-pressure oxygen 404 gets into user's respiratory track, provides high concentration oxygen for the user.

The air supercharging unit 300 and the oxygen supply unit 400 are independent from each other, so that the intervention of the air supercharging unit 300 and the oxygen supply unit 400 can be respectively controlled by the main controller 201, and the combination of three modes can be realized:

first, as shown in fig. 3, in a relatively low altitude plateau area or when the oxygen deficiency condition of the user is not serious, the control unit 200 and the air pressurizing unit 300 can be used in combination, which is an economical and effective way for preventing and treating altitude diseases, without a high-concentration oxygen source, and provides air gas higher than the ambient pressure for the user through a user interface, thereby increasing the tidal volume of the user, preventing the collapse of alveoli, and improving the gas exchange in the alveoli, so as to improve oxygenation;

secondly, as shown in fig. 1, when the user arrives at a high altitude plateau or the oxygen deficiency condition of the user is serious, the main control unit 200, the air pressurizing unit 300 and the oxygen supply unit 400 can be used in combination, on the basis of the first ventilation mode, oxygen is supplied at the initial stage of the inhalation phase of the user, and oxygen is not supplied to the user at the later stage of the inhalation phase and the exhalation phase of the user, so that waste of ineffective oxygen supply at the later stage of the inhalation phase and the exhalation phase of the user is avoided, on the basis of ensuring clinical effectiveness, because an oxygen gas source is saved, the portable oxygen supply time of the user is prolonged when the user goes out, and oxygenation is improved compared with the first ventilation mode.

Thirdly, as shown in fig. 4, when the remaining battery capacity is low, the main control unit 200 and the oxygen supply unit 400 can be used in combination, so as to save electric energy, and provide high-concentration oxygen for the user to improve oxygenation.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.