Adaptive altitude pulse oxygen generator control method and pulse oxygen generator

Abstract

The present invention relates to the technical field of oxygen generators, and discloses an adaptive altitude pulse oxygen generator control method and a pulse oxygen generator, aiming to solve the problem of insufficient accuracy in existing control methods. The solution mainly includes: obtaining the current atmospheric pressure; determining the target oxygen output flow rate that the pulse oxygen generator needs to provide according to the current atmospheric pressure and a preset atmospheric pressure; controlling the oxygen output of the pulse oxygen generator according to the target oxygen output flow rate. The present invention realizes adaptation to the altitude, improves the accuracy of oxygen generator control, takes into account the oxygen inhalation needs of users and the battery life of the oxygen generator at the same time, enhances the safety and experience of users using the oxygen generator, and is particularly suitable for high-altitude areas.

Description

Technical Field

[0001] The present invention relates to the technical field of oxygen generators, and more specifically, to an adaptive altitude pulse oxygen generator control method and a pulse oxygen generator. Background Art

[0002] An oxygen generator is a type of machine for producing oxygen. Its principle is to separate oxygen and nitrogen through the different adsorption capacities of an adsorbent for oxygen and nitrogen under the action of pressure. Such a machine generally uses an oil-free compressor as the power source, molecular sieve as the adsorption medium, and cooperates with components such as a four-way valve to separate oxygen and nitrogen in the air, and finally obtain high-concentration oxygen.

[0003] Different from traditional oxygen generators, a pulse oxygen generator detects the user's inhalation and exhalation through a micro pressure sensor and realizes intermittent oxygen supply according to the user's breathing frequency. Oxygen is supplied when the user inhales and stopped when the user exhales, thus greatly saving the oxygen produced by the oxygen generator, improving the utilization rate of oxygen, and achieving the same oxygen supply effect. The oxygen consumption of intermittent oxygen supply is only 1 / 3 of that of continuous oxygen supply, thus reducing the volume, weight and energy consumption of the oxygen generator.

[0004] In a high-altitude environment, the higher the altitude, the lower the atmospheric pressure, and the less oxygen content in the air. More oxygen needs to be supplemented by the oxygen generator to achieve the effect of low altitude. In order to provide different oxygen flow rates for users at different altitudes, the existing pulse oxygen generators usually adopt the method of setting multiple working gears, with a fixed oxygen flow rate set for each gear, and the user manually selects the working gear according to their own state to select the corresponding oxygen flow rate.

[0005] The above method has at least the following deficiencies: The higher the working gear, the higher the corresponding oxygen output flow rate, but the higher the corresponding power consumption and the shorter the battery life. On the contrary, the lower the working gear, the lower the corresponding oxygen output flow rate, but the lower the corresponding power consumption and the longer the battery life. Due to the large individual differences among different users, each user cannot fully master their own oxygen inhalation needs, and is not very clear about the beneficial effects that each working gear can bring. At different altitudes, the different effects that each working gear can produce are also uncertain, and only personal feelings can be used to make a judgment. For example, some users may choose the maximum working gear at low altitude, resulting in a rapid depletion of the battery, a shortened oxygen inhalation time, and an impact on subsequent experiences. Some users at higher altitudes may already have symptoms of hypoxia and fail to adjust to a higher working gear in time. Or some users with strong adaptability can adapt to the current altitude in the middle gear, but choose the maximum working gear at the beginning, resulting in a power outage during the journey and affecting the subsequent journey. The method of manual control by feeling fails to balance the relationship between effect and battery life, and has poor accuracy, resulting in the oxygen generator not being able to output oxygen at the oxygen flow rate of the optimal gear, greatly reducing the use effect of the oxygen generator.

[0006] In addition, during the oxygen inhalation process, users can only judge whether they have selected the best gear based on their own feelings, lacking quantitative basis for the effects during use. Different users have different feelings. Some may be more sensitive while some are less sensitive. Especially for the middle-aged and elderly, they may have hypoxia symptoms but fail to realize in time to adjust the gear, resulting in hypoxia affecting the experience. Summary of the Invention

[0007] The present invention aims to solve the problem of insufficient accuracy in the existing control method of pulse oxygen generators, and proposes a control method for a pulse oxygen generator with adaptive altitude and a pulse oxygen generator.

[0008] The technical solution adopted by the present invention to solve the above technical problems is as follows:

[0009] In the first aspect, a control method for a pulse oxygen generator with adaptive altitude is provided, including the following steps:

[0010] Obtain the current atmospheric pressure;

[0011] Determine the target oxygen output flow rate that the pulse oxygen generator needs to provide according to the current atmospheric pressure and the preset atmospheric pressure;

[0012] Control the oxygen output of the pulse oxygen generator according to the target oxygen output flow rate.

[0013] Specifically, there is a correlation between the altitude and the atmospheric pressure, that is, the higher the altitude, the lower the atmospheric pressure, and vice versa. The current atmospheric pressure can reflect the current altitude. By determining the target oxygen output flow rate that the pulse oxygen generator needs to provide through the current atmospheric pressure and the preset atmospheric pressure, when the pulse oxygen generator provides this target oxygen output flow rate, the oxygen inhalation amount of the user at the current altitude is approximately the same as that at the altitude corresponding to the preset atmospheric pressure, thereby realizing accurate control of the pulse oxygen generator.

[0014] Further, the method for determining the target oxygen output flow rate specifically includes:

[0015] Determine the oxygen output concentration of the pulse oxygen generator and the breathing frequency of the user;

[0016] Calculate the target oxygen inhalation concentration required by the user according to the current atmospheric pressure and the preset atmospheric pressure;

[0017] Determine the target pure oxygen amount that the pulse oxygen generator needs to provide during a single breath of the user according to the target oxygen inhalation concentration;

[0018] Calculate the target oxygen output flow rate according to the target pure oxygen amount, the oxygen output concentration and the breathing frequency of the user.

[0019] Specifically, the target oxygen output flow rate can be simply and conveniently calculated by the above method. Moreover, the pulse oxygen generator does not supply pure oxygen during oxygen supply, but supplies oxygen at a fixed oxygen output concentration. By calculating the target pure oxygen amount required by the pulse oxygen generator during a single breath of the user, and then calculating the target oxygen output flow rate based on the target pure oxygen amount, the oxygen output concentration, and the user's breathing frequency, the influence of the oxygen output concentration of the pulse oxygen generator on the target oxygen output flow rate can be avoided, and the accuracy of the target oxygen output flow rate can be further improved.

[0020] Furthermore, the method for determining the target pure oxygen amount includes:

[0021] Calculating the pure oxygen concentration in the air under the current atmospheric pressure;

[0022] Calculating the target pure oxygen amount required by the pulse oxygen generator during a single breath of the user according to the target oxygen inhalation concentration and the pure oxygen concentration in the air.

[0023] Specifically, in a high-altitude environment, the nasal catheter method is usually used for oxygen inhalation. When the user breathes, in addition to the oxygen supplied by the oxygen generator, a large amount of air is also inhaled. And the pure oxygen concentration in the air varies at different altitudes. By calculating the pure oxygen concentration in the air under the current atmospheric pressure and calculating the target pure oxygen amount according to the pure oxygen concentration in the air, the influence of the pure oxygen concentration in the air on the target pure oxygen amount can be avoided, and the accuracy of the target pure oxygen amount can be further improved.

[0024] Furthermore, the calculation formula for the target oxygen inhalation concentration is as follows:

[0025] ;

[0026] In the formula, is the target oxygen inhalation concentration, is the current atmospheric pressure, is the preset atmospheric pressure.

[0027] Furthermore, the calculation formula for the pure oxygen concentration in the air under the current atmospheric pressure is as follows:

[0028] ;

[0029] In the formula, is the pure oxygen concentration in the air under the current atmospheric pressure, is the current atmospheric pressure.

[0030] Furthermore, the calculation formula for the target pure oxygen amount is as follows:

[0031] ;

[0032] In the formula, is the target pure oxygen amount, is the target oxygen inhalation concentration, is the pure oxygen concentration in the air under the current atmospheric pressure, is the tidal volume during a single breath of the user, is the dead space volume during the user's breathing.

[0033] Furthermore, the calculation formula for the target oxygen output flow rate is as follows:

[0034] ;

[0035] In the formula, is the target oxygen output flow rate, is the target pure oxygen amount, is the breathing frequency, is the oxygen output concentration of the pulse oxygen generator.

[0036] Furthermore, the preset atmospheric pressure is the safe atmospheric pressure corresponding to the safe altitude.

[0037] Specifically, when the user is below the safe altitude, there is no hypoxia reaction. For example, the safe altitude can be 1500 meters. Calculating the target oxygen output flow rate through the safe atmospheric pressure can make the oxygen inhalation amount of the user at the current altitude approximately the same as that at the safe altitude. In this way, not only can the oxygen inhalation amount of the user be guaranteed, but also the battery life of the oxygen generator can be maximally ensured, improving the user experience and safety.

[0038] Furthermore, when the pulse oxygen generator is turned on, the preset breathing frequency is used as the breathing frequency of the user to calculate the target oxygen output flow rate.

[0039] Specifically, when the user turns on the pulse oxygen generator, at this time, the oxygen generator is not used for oxygen supply, and the breathing frequency of the user cannot be detected. At this time, the target oxygen output flow rate is calculated through the preset breathing frequency. For example, the preset breathing frequency is 20 times / min. In this way, it can be ensured that when the pulse oxygen generator is turned on, the target oxygen output amount can be calculated according to the current altitude and accurate oxygen supply can be carried out, further improving the accuracy of the oxygen generator control and the user experience.

[0040] Furthermore, controlling the oxygen output of the pulse oxygen generator according to the oxygen output flow rate specifically includes:

[0041] Setting multiple working gears with different oxygen output flow rates in the pulse oxygen generator;

[0042] Calculating the difference between the target oxygen output flow rate and the oxygen output flow rate corresponding to each working gear respectively, and feeding back the working gear corresponding to the oxygen output flow rate with the smallest difference to the user.

[0043] Specifically, by using the working gear corresponding to the oxygen output flow rate with the smallest difference as the recommended gear, the accuracy of the oxygen generator control can be further improved, and the user can set the working gear according to the feedback prompt.

[0044] Furthermore, the method further includes:

[0045] When the user continuously uses the pulse oxygen generator, the breathing frequency of the user is collected in real time by the pulse oxygen generator;

[0046] Calculate the equivalent atmospheric pressure according to the breathing frequency collected in real time and the current oxygen output flow rate corresponding to the current working gear of the pulse oxygen generator, and calculate the corresponding equivalent altitude according to the equivalent atmospheric pressure;

[0047] Judge whether it is necessary to adjust the working gear according to the equivalent altitude, and when it is necessary to adjust the working gear, feedback to the user to perform the corresponding gear adjustment operation.

[0048] Specifically, the equivalent altitude is the altitude perceived by the user when the pulse oxygen generator generates oxygen at the current working gear. Verify whether the current working gear is the best gear through the equivalent altitude in the oxygen inhalation state, and guide the user to adjust the gear according to the verification result. In this way, the user can adjust the gear in time when the gear is not appropriate, avoiding the influence of different breathing frequencies of different users at the same altitude and different breathing frequencies of different users after oxygen inhalation on the control accuracy of the oxygen generator.

[0049] Furthermore, judging whether it is necessary to adjust the working gear according to the equivalent altitude specifically includes:

[0050] If the equivalent altitude is greater than the preset altitude range within the preset time, it is determined that an upshift operation needs to be performed. If the equivalent altitude is less than the preset altitude range within the preset time, it is determined that a downshift operation needs to be performed.

[0051] Specifically, when the equivalent altitude is higher than the preset altitude range, it means that the oxygen output flow rate provided by the current working gear of the pulse oxygen generator is not enough to meet the oxygen inhalation needs of the user. At this time, an upshift operation is performed to increase the oxygen output flow rate to meet the oxygen inhalation needs of the user. When the equivalent altitude is lower than the preset altitude range, it means that the oxygen flow rate provided by the current working gear of the pulse oxygen generator is too large. At this time, a downshift operation is performed to improve the battery life of the oxygen generator. When the equivalent altitude is within the preset altitude range, it means that the current working gear is the best gear, which can not only meet the oxygen inhalation needs but also save energy to the greatest extent. And by judging multiple times within the preset time, detection and calculation errors can be avoided, and the accuracy of the working gear adjustment judgment can be further improved.

[0052] Furthermore, the specific calculation method of the equivalent atmospheric pressure specifically includes:

[0053] Calculate the current pure oxygen amount provided by the pulse oxygen generator for the user during a single breath based on the real-time collected breathing frequency, the current oxygen output flow rate corresponding to the current working gear, and the oxygen output concentration.

[0054] Calculate the user's current oxygen inhalation concentration based on the current pure oxygen amount and the pure oxygen concentration in the air.

[0055] Calculate the equivalent atmospheric pressure based on the current oxygen inhalation concentration and the current atmospheric pressure.

[0056] Specifically, the equivalent atmospheric pressure can be simply and conveniently calculated through the above method. And the pulse oxygen generator cannot provide pure oxygen during oxygen supply, but supplies oxygen at a fixed oxygen output concentration. Calculating the current pure oxygen amount through the oxygen output concentration of the pulse oxygen generator and calculating the equivalent atmospheric pressure based on the pure oxygen amount can avoid the influence of the oxygen output concentration of the pulse oxygen generator on the equivalent atmospheric pressure, and further improve the accuracy of the equivalent atmospheric pressure.

[0057] Furthermore, the calculation formula for the current pure oxygen amount is as follows:

[0058] ;

[0059] In the formula, is the current pure oxygen amount, is the current oxygen output flow rate, is the breathing frequency, is the oxygen output concentration of the pulse oxygen generator.

[0060] Furthermore, the calculation formula for the current oxygen inhalation concentration is as follows:

[0061] ;

[0062] In the formula, is the current oxygen inhalation concentration, is the current pure oxygen amount, is the pure oxygen concentration in the air under the current atmospheric pressure, is the tidal volume during a single breath of the user, is the dead space volume during the user's breathing.

[0063] Furthermore, the calculation formula for the equivalent atmospheric pressure is as follows:

[0064] ;

[0065] In the formula, is the equivalent atmospheric pressure, is the current atmospheric pressure, is the current oxygen inhalation concentration.

[0066] Further, the calculation formula for the equivalent altitude is as follows:

[0067] ;

[0068] In the formula, is the equivalent altitude, is the equivalent atmospheric pressure.

[0069] Further, the method further includes:

[0070] Calculating the current altitude corresponding to the current atmospheric pressure;

[0071] Real-time feedback to the user of the current altitude and / or equivalent altitude.

[0072] Specifically, based on the feedback altitude, the user can intuitively understand the altitude and oxygen inhalation status where they are located, and can also compare the current altitude with the equivalent altitude, thereby intuitively understanding the oxygen inhalation effect of themselves at different altitudes and different working gears. At the same time, the user can also adjust the working gear of the pulse oxygen generator according to their own needs. This further improves the user experience.

[0073] The method further includes:

[0074] Determining the remaining battery life when the pulse oxygen generator continues to work at the current working gear, and real-time feedback to the user of the remaining battery life.

[0075] Specifically, based on the feedback of the remaining battery life, the user can intuitively understand the battery life of the oxygen generator, and then flexibly adjust the working gear of the pulse oxygen generator, which further improves the user experience.

[0076] Further, the method further includes:

[0077] When the user continuously uses the pulse oxygen generator, obtaining the physical state parameters of the user after oxygen inhalation, and judging whether the pulse oxygen generator can provide a safe oxygen supply concentration according to the magnitude relationship between the physical state parameters and the corresponding preset parameters. If not, feedback to the user to perform a gear-up operation. The physical state parameters include: heart rate and / or blood oxygen saturation.

[0078] Specifically, through the heart rate and / or blood oxygen saturation, the physical state of the user after oxygen inhalation can be accurately judged, and then it can be judged whether the oxygen output flow provided by the current working gear of the pulse oxygen generator can meet the oxygen inhalation needs of the user. And when the oxygen inhalation needs cannot be met, the user is prompted to shift up gears, avoiding the situation where the user is hypoxic but does not know it themselves, which further improves the user experience and safety.

[0079] Further, the method further includes:

[0080] When the user continuously uses the pulse oxygen generator, the breathing frequency of the user is collected in real time by the pulse oxygen generator;

[0081] According to the collected breathing frequency, the target oxygen output flow rate required by the pulse oxygen generator is calculated in real time, and the oxygen output of the pulse oxygen generator is controlled according to the target oxygen output flow rate calculated in real time.

[0082] Specifically, when the user continuously inhales oxygen, by collecting the breathing frequency of the user to calculate the target oxygen output flow rate in real time, it can avoid the influence of different breathing frequencies caused by individual differences of users on the target oxygen output flow rate, and further improve the accuracy of the target oxygen output flow rate.

[0083] In a second aspect, a pulse oxygen generator with adaptive altitude is provided, which at least includes: an oxygen generator main body, and the oxygen generator main body is used to execute the control method of the pulse oxygen generator with adaptive altitude as described in the first aspect.

[0084] The beneficial effects of the present invention are as follows: for the control method of the pulse oxygen generator with adaptive altitude and the pulse oxygen generator of the present invention, the target oxygen output flow rate of the pulse oxygen generator is determined by the current atmospheric pressure and the preset atmospheric pressure, so that the pulse oxygen generator can provide the corresponding target oxygen output at different altitudes, thereby realizing adaptive altitude, improving the accuracy of the oxygen generator control, taking into account the oxygen inhalation needs of users and the battery life of the oxygen generator, and enhancing the safety and experience of users using the oxygen generator. For a pulse oxygen generator with multiple working gears, when the user continuously inhales oxygen, the current working gear of the oxygen generator is verified by the equivalent altitude or the physical state parameters of the user, which further improves the accuracy of the oxygen generator control and also avoids the influence of individual differences on the oxygen generator control. By real-time feedback of the altitude and the remaining battery life, the user can intuitively understand the oxygen inhalation effect and the device state, thus enhancing the user experience. Description of the Drawings

[0085] Figure 1 It is a schematic flow chart of a control method of a pulse oxygen generator with adaptive altitude according to an embodiment of the present invention;

[0086] Figure 2 It is another schematic flow chart of a control method of a pulse oxygen generator with adaptive altitude according to an embodiment of the present invention;

[0087] Figure 3 It is a schematic flow chart of the calculation process of the target oxygen output flow rate according to an embodiment of the present invention;

[0088] Figure 4 It is a schematic flow chart of a working gear verification according to an embodiment of the present invention;

[0089] Figure 5Another schematic flowchart of the working gear verification according to the embodiment of the present invention;

[0090] Figure 6 Schematic flowchart of the calculation process of the equivalent atmospheric pressure according to the embodiment of the present invention;

[0091] Figure 7 Another schematic flowchart of the control method of the pulse oxygen generator with adaptive altitude according to the embodiment of the present invention. Detailed implementation manners

[0092] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0093] The present invention aims to provide a control method and a pulse oxygen generator with adaptive altitude to simultaneously take into account the oxygen inhalation needs of users and the battery life of the oxygen generator, and improve the accuracy of the oxygen generator control. Its main technical solutions include: obtaining the current atmospheric pressure; determining the target oxygen output flow rate that the pulse oxygen generator needs to provide according to the current atmospheric pressure and the preset atmospheric pressure; controlling the oxygen output of the pulse oxygen generator according to the target oxygen output flow rate.

[0094] It can be understood that when a user uses a pulse oxygen generator in a high-altitude environment, when the altitude exceeds the safe altitude, if it is necessary to maintain that the user does not suffer from hypoxia, a certain amount of oxygen needs to be supplemented. And as the altitude increases, the amount of oxygen in the air also decreases. At this time, if it is necessary to maintain that the user does not suffer from hypoxia, more oxygen needs to be supplemented. In the prior art, in the way of manually adjusting the working gear to adjust the oxygen output flow rate of the oxygen generator, it is difficult for the user to balance the oxygen inhalation effect and the power consumption of the oxygen generator by feeling, and there is a problem of low accuracy. To solve the above technical problems, the present invention collects the current atmospheric pressure in real time, reflects the current altitude through the current atmospheric pressure, and determines the target oxygen output flow rate that the pulse oxygen generator needs to provide through the current atmospheric pressure and the preset atmospheric pressure. When the pulse oxygen generator provides the target oxygen output flow rate, the pulse oxygen generator can provide the corresponding target oxygen output amount at different altitudes, that is, the oxygen inhalation amount of the user at the current altitude is approximately the same as the oxygen inhalation amount at the altitude corresponding to the preset atmospheric pressure, realizing adaptive altitude, and further improving the accuracy of the oxygen generator control.

[0095] Embodiment 1

[0096] Please refer to Figure 1 and Figure 2 , the control method of the pulse oxygen generator with adaptive altitude described in this embodiment includes the following steps:

[0097] Step 1, obtain the current atmospheric pressure;

[0098] In practical applications, a barometric pressure sensor can be set in a pulse oxygen generator to collect the current atmospheric pressure through the barometric pressure sensor and send it to the main unit of the oxygen generator. Since the atmospheric pressure is correlated with the altitude, in this embodiment, the current altitude where the user is located is reflected by the current atmospheric pressure, and the target oxygen output flow rate that the pulse oxygen generator needs to provide is determined based on the current altitude.

[0099] Step 2: Determine the target oxygen output flow rate that the pulse oxygen generator needs to provide according to the current atmospheric pressure and the preset atmospheric pressure;

[0100] According to the regulations in GJB114 "Physiological Requirements for Acute Hypoxia Protection", altitude hypoxia can be divided into the following zones:

[0101] Altitude (m) Partition Name Partition Characteristics 0-1500 Non-Response Area No Hypoxic Response 1500-3000 Efficacy Assurance Area Respiratory and Circulatory Functions Begin to Compensatorily Enhance, Symptoms are Slight 3000-4000 Efficacy Permissible Area Symptoms Slightly Worsen, but Not to a Significant Level 4000-5000 Safe Area Efficacy Decreases Rapidly, Symptoms Worsen, Respiratory and Circulatory Functions are Further Strengthened 5000-7000 Tolerance Limit Area Difficult to Tolerate, Endangering Safety Above 7000 m Limit Area Consciousness Disorder

[0102] It can be seen from the above table that when the altitude is less than 1500 meters, users basically do not have hypoxia reactions. Therefore, in this embodiment, the preset atmospheric pressure can be set as the safe atmospheric pressure corresponding to the safe altitude, that is, the safe atmospheric pressure corresponding to an altitude of 1500 meters. The safe atmospheric pressure can be calculated through the formula between atmospheric pressure and altitude and used as the preset atmospheric pressure, that is:

[0103] ;

[0104] In practical applications, if the current atmospheric pressure is less than the preset atmospheric pressure, it means that users may have hypoxia reactions. At this time, a pulse oxygen generator is needed to supply oxygen to users. When oxygen supplementation is required for users, in this embodiment, the target oxygen output flow rate that the pulse oxygen generator needs to provide is determined according to the current atmospheric pressure and the preset atmospheric pressure, so that the pulse oxygen generator can provide the corresponding target oxygen output at different altitudes, realizing adaptation to altitude, improving the accuracy of oxygen generator control, taking into account the oxygen inhalation needs of users and the battery life of the oxygen generator, and enhancing the safety and experience of users using the oxygen generator.

[0105] Please refer to Figure 3 , in this embodiment, the method for determining the target oxygen output flow rate specifically includes:

[0106] Step 21: Determine the oxygen output concentration of the pulse oxygen generator and the breathing frequency of the user;

[0107] It can be understood that the oxygen generated by the pulse oxygen generator is not pure oxygen, but oxygen is generated at a fixed and relatively high oxygen output concentration. Usually, the oxygen output concentration of the pulse oxygen generator is basically 93%. Considering the oxygen output concentration when calculating the target oxygen output can avoid the influence of the oxygen output concentration of the pulse oxygen generator on the target oxygen output flow rate, and further improve the accuracy of the target oxygen output flow rate.

[0108] When the oxygen generator is just turned on, the user does not use the oxygen generator for oxygen supply at this time, and it is impossible to detect the user's breathing frequency. At this time, the target oxygen output flow is calculated through a preset breathing frequency. Since the breathing frequency of normal people is 16-18 times / min, in this embodiment, the preset breathing frequency can be 20 times / min. In this way, it can be ensured that when the pulse oxygen generator is turned on, the target oxygen output can be calculated according to the current altitude and accurate oxygen supply can be carried out, further improving the accuracy of oxygen generator control and the user experience.

[0109] Step 22: Calculate the target oxygen inhalation concentration required by the user according to the current atmospheric pressure and the preset atmospheric pressure. The calculation formula is as follows:

[0110] ;

[0111] In the formula, is the target oxygen inhalation concentration, is the current atmospheric pressure, is the preset atmospheric pressure.

[0112] Assume that the detected current atmospheric pressure is 68 kPa, then the current altitude can be calculated to be 3000 meters through the formula between atmospheric pressure and altitude, that is:

[0113] meters.

[0114] Step 23: Calculate the pure oxygen concentration in the air under the current atmospheric pressure;

[0115] It can be understood that in the plateau environment, the nasal catheter method is usually used for oxygen inhalation. When the user breathes in this way, in addition to the oxygen provided by the oxygen generator, a large amount of air will also be inhaled. And at different altitudes, the pure oxygen concentration in the air is also different. Considering the pure oxygen concentration in the air when calculating the target pure oxygen amount in this embodiment can avoid the influence of the oxygen content in the air on the target pure oxygen amount. Among them, the calculation formula of the pure oxygen concentration in the air is as follows:

[0116] ;

[0117] In the formula, is the pure oxygen concentration in the air under the current atmospheric pressure, is the current atmospheric pressure.

[0118] Step 24: Calculate the target pure oxygen amount that the pulse oxygen generator needs to provide when the user breathes once according to the target oxygen inhalation concentration and the pure oxygen concentration in the air. The calculation formula is as follows:

[0119] ;

[0120] In the formula, is the target pure oxygen amount, is the target oxygen inhalation concentration, is the pure oxygen concentration in the air under the current atmospheric pressure, is the tidal volume during a single breath of the user, is the dead space volume during the user's breathing.

[0121] It can be understood that the tidal volume is the amount of gas inhaled or exhaled each time during quiet breathing, generally 500 mL for ordinary people, and the dead space volume is the gas storage volume in some structures of the human body such as the nasal cavity that do not participate in gas exchange, generally 50 mL for ordinary people.

[0122] Step 25: Calculate the target oxygen output flow rate according to the target pure oxygen amount, the oxygen output concentration, and the breathing frequency of the user. The calculation formula is as follows:

[0123] ;

[0124] In the formula, is the target oxygen output flow rate, is the target pure oxygen amount, is the breathing frequency, is the oxygen output concentration of the pulse oxygen generator.

[0125] Assume that the oxygen output concentration of the pulse oxygen generator is 93%, the breathing frequency is the preset breathing frequency of 20 times / min, the current atmospheric pressure is 68 kPa, the preset atmospheric pressure is the safe atmospheric pressure of 84.7 kPa, the tidal volume is 500 mL, the dead space volume is 50 mL. Then, through the above formula, the corresponding target oxygen inhalation concentration can be calculated to be 26.6%, the pure oxygen concentration in the air is 14.16%, the target pure oxygen amount is 22.8 mL / time, and the target oxygen output flow rate is 0.49 L / min.

[0126] Step 3: Control the oxygen output of the pulse oxygen generator according to the target oxygen output flow rate.

[0127] In this embodiment, multiple working gears with different oxygen output flows can be set in the pulse oxygen generator, and the differences between the target oxygen output flow and the oxygen output flows corresponding to each working gear are calculated respectively, and the working gear corresponding to the oxygen output flow with the smallest difference is fed back to the user. If the calculated target oxygen output flow is greater than the maximum oxygen output flow of the oxygen generator, the user is directly recommended to use the highest gear. For example, if the calculated target oxygen output flow is 0.49 L / min, and 0.49 L / min is between 0.4 L / min of the second gear and 0.6 L / min of the third gear, the user can be recommended to use the second gear.

[0128] In addition, in practical applications, if the current atmospheric pressure is greater than the preset atmospheric pressure, it means that the user's current altitude is lower than the safe altitude, and at this time the user will not have an anoxic reaction. Then it is recommended that the user turn off the oxygen generator. If the user insists on using the oxygen generator, it is recommended that the user use the lowest working gear corresponding to the minimum oxygen output flow to increase the endurance of the oxygen generator.

[0129] Please refer to Figure 4 and Figure 5 , based on the above control method for gear recommendation, in this embodiment, when the user is continuously inhaling oxygen, it is also possible to verify whether the current working gear is the best gear and feedback to the user when it is not the best gear, so that the user can adjust the gear, thereby further improving the accuracy of the oxygen generator control. Specifically, it includes the following steps:

[0130] Step 4: When the user continuously uses the pulse oxygen generator, the user's breathing frequency is collected in real time through the pulse oxygen generator;

[0131] Specifically, a pressure sensor is set in the pulse oxygen generator to detect the breathing pressure of the user. If the breathing pressure is positive, it means that the user is in the exhalation state, and at this time the oxygen supply is stopped; if the breathing pressure is negative, it means that the user is in the inhalation state, and at this time the oxygen supply is carried out. On this basis, the breathing frequency of the user can be calculated by recording the time taken for the user to complete a single breath, and the breathing frequency of the user can also be obtained by recording the number of breaths of the user per minute, so as to complete the real-time collection of the breathing frequency.

[0132] Step 5: Calculate the equivalent atmospheric pressure according to the breathing frequency collected in real time and the current oxygen output flow corresponding to the current working gear of the pulse oxygen generator, and calculate the corresponding equivalent altitude according to the equivalent atmospheric pressure;

[0133] Please refer to Figure 6 , the steps for calculating the equivalent atmospheric pressure in this embodiment specifically include:

[0134] Step 51. Calculate the current pure oxygen amount provided by the pulse oxygen generator during a single breath of the user according to the real-time collected breathing frequency, the current oxygen output flow rate corresponding to the current working gear, and the oxygen output concentration. The calculation formula is as follows:

[0135] ;

[0136] In the formula, is the current pure oxygen amount, is the current oxygen output flow rate, is the breathing frequency, is the oxygen output concentration of the pulse oxygen generator.

[0137] Step 52. Calculate the current oxygen inhalation concentration of the user according to the current pure oxygen amount and the pure oxygen concentration in the air. The calculation formula is as follows:

[0138] ;

[0139] In the formula, is the current oxygen inhalation concentration, is the current pure oxygen amount, is the pure oxygen concentration in the air under the current atmospheric pressure, is the tidal volume during a single breath of the user, is the dead space volume during the user's breathing.

[0140] Step 53. Calculate the equivalent atmospheric pressure according to the current oxygen inhalation concentration and the current atmospheric pressure. The calculation formula is as follows:

[0141] ;

[0142] In the formula, is the equivalent atmospheric pressure, is the current atmospheric pressure, is the current oxygen inhalation concentration.

[0143] The calculation formula for the equivalent altitude is as follows:

[0144] ;

[0145] In the formula, is the equivalent altitude, is the equivalent atmospheric pressure.

[0146] Assume that the oxygen output concentration of the pulse oxygen generator is 93%, the collected breathing frequency is 20 times / min, the current atmospheric pressure is 68 kPa, the tidal volume is 500 mL, the dead space volume is 50 mL, and the current oxygen output flow rate is 0.8 L / min, and the corresponding current pure oxygen amount can be calculated through the above formula. is 29.7 mL / time, and the current oxygen inhalation concentration is 27.84%, and the equivalent atmospheric pressure is 88.29 kPa, and the equivalent altitude is 1175.92 meters.

[0147] Step 6: Determine whether it is necessary to adjust the working gear according to the equivalent altitude, and when it is necessary to adjust the working gear, feedback to the user to perform the corresponding gear adjustment operation.

[0148] Specifically, if the equivalent altitude is greater than the preset altitude range within the preset time, it is determined that an upshift operation needs to be performed. If the equivalent altitude is less than the preset altitude range within the preset time, it is determined that a downshift operation needs to be performed.

[0149] Among them, the preset altitude range is set according to the safe altitude, and the specific size can be set according to the actual situation. For example, it can be 1400 - 1600 meters. Assuming that the calculated altitude is 1175.92 meters, which is lower than the preset altitude range, at this time, the user is prompted to increase the working gear to increase the battery life of the pulse oxygen generator.

[0150] Verify the current working gear of the oxygen generator through the equivalent altitude, so that when the user is continuously inhaling oxygen, the oxygen generator is always in the best gear, that is, on the basis of meeting the user's oxygen inhalation needs, the power consumption is saved to the greatest extent, further improving the accuracy of the oxygen generator control, and at the same time avoiding the influence of individual differences on the oxygen generator control.

[0151] In this embodiment, the corresponding current altitude can also be calculated according to the currently obtained atmospheric pressure in real time, and at the same time, the remaining battery life of the pulse oxygen generator when working continuously at the current working gear is determined, and the current altitude, equivalent altitude and / or remaining battery life are fed back to the user. In this way, the user can intuitively understand the current altitude, oxygen inhalation effect and the battery life status of the oxygen generator, further improving the user experience. In practical applications, of course, it is not limited to feedback the above parameters, and it can also include feedback parameters such as the current working gear of the oxygen generator, the current oxygen output flow rate, oxygen output flow rate, current pure oxygen amount, current oxygen inhalation concentration, current altitude, equivalent atmospheric pressure, etc. This embodiment does not limit this.

[0152] In addition, in this embodiment, when the user is continuously receiving oxygen, it is also possible to determine whether an anoxic reaction occurs based on other physical state parameters of the user. Specifically, when the user continuously uses a pulse oxygen generator, the physical state parameters of the user after receiving oxygen are obtained, and it is determined whether the pulse oxygen generator can provide a safe oxygen supply concentration according to the magnitude relationship between the physical state parameters and the corresponding preset parameters. If not, a gear-up operation is fed back to the user. The physical state parameters include: heart rate and / or blood oxygen saturation. For example, when the user's heart rate exceeds the preset heart rate and / or the blood oxygen saturation is lower than the preset blood oxygen saturation, it is determined that the user is in an anoxic state, and at this time, the user is prompted to shift up gears to ensure the user's oxygen demand and safety.

[0153] Based on the above technical solution, this embodiment also proposes a pulse oxygen generator with adaptive altitude. The pulse oxygen generator at least includes: an oxygen generator main unit, and the oxygen generator main unit is used to execute the control method of the pulse oxygen generator with adaptive altitude.

[0154] It can be understood that since the pulse oxygen generator with adaptive altitude in the embodiment of the present invention is a device for implementing the control method of the pulse oxygen generator with adaptive altitude in the embodiment, for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method.

[0155] In summary, the control method and the pulse oxygen generator with adaptive altitude provided in this embodiment determine the target oxygen output flow of the pulse oxygen generator through the current atmospheric pressure and the preset atmospheric pressure, so that the pulse oxygen generator can provide the corresponding target oxygen output at different altitudes, thereby realizing adaptation to the altitude, improving the accuracy of the oxygen generator control, and at the same time taking into account the user's oxygen demand and the battery life of the oxygen generator, and enhancing the safety and experience of the user using the oxygen generator. For a pulse oxygen generator with multiple working gears, when the user is continuously receiving oxygen, the current working gear of the oxygen generator is verified through the equivalent altitude or the physical state parameters of the user, further improving the accuracy of the oxygen generator control, and at the same time avoiding the influence of individual differences on the oxygen generator control. By real-time feedback of the altitude and the remaining battery life, the user can intuitively understand the oxygen absorption effect and the device status, enhancing the user experience.

[0156] Embodiment 2

[0157] The control method of the pulse oxygen generator with adaptive altitude provided in this embodiment does not require the pulse oxygen generator to set working gears, and the pulse oxygen generator can realize stepless adjustment of the oxygen output flow. Please refer to Figure 7 , and its control process is substantially the same as that of Embodiment 1, except that:

[0158] In this embodiment, when the pulse oxygen generator is turned on, the preset breathing frequency is used as the target oxygen output flow rate calculation target for the user's breathing frequency, and the pulse oxygen generator is controlled to output oxygen at the target oxygen output flow rate; when the user continuously uses the pulse oxygen generator, the breathing frequency of the user is collected in real time by the pulse oxygen generator, the target oxygen output flow rate is calculated in real time according to the breathing frequency collected in real time, and the pulse oxygen generator is controlled to output oxygen according to the target oxygen output flow rate calculated in real time.

[0159] Specifically, since when the oxygen generator is just turned on, the user does not use the oxygen generator for oxygen supply at this time, and the breathing frequency of the user cannot be detected. At this time, the target oxygen output flow rate is calculated through the preset breathing frequency. The method of calculating the target oxygen output flow rate is the same as that in Embodiment 1 and will not be elaborated here. After calculating the target oxygen output flow rate, the oxygen generator host directly controls the pulse oxygen generator to supply oxygen at the target oxygen output flow rate.

[0160] In this way, it can be ensured that when the pulse oxygen generator is turned on, the target oxygen output can be calculated according to the current altitude and accurate oxygen supply can be carried out, and there is no need for the user to manually adjust, which can reduce the operation of the user and further improve the user experience.

[0161] When the user continuously uses the pulse oxygen generator for oxygen inhalation, the breathing frequency of the user can be collected in real time, and the target oxygen output flow rate can be calculated in real time through the breathing frequency collected in real time. The method of calculating the target oxygen output flow rate is the same as that in Embodiment 1 and will not be elaborated here. After calculating the target oxygen output flow rate in real time, the oxygen generator host directly controls the pulse oxygen generator to supply oxygen at the target oxygen output flow rate.

[0162] By collecting the breathing frequency in real time, the accuracy of the breathing frequency can be improved, thus avoiding the problem of different breathing frequencies caused by individual differences of users. And as the user continuously inhales oxygen, the breathing frequency after the user inhales oxygen may change. By calculating the target oxygen output flow rate through the breathing frequency collected in real time, the accuracy of the oxygen generator control can be further improved. In addition, the above control method is automatically completed by the pulse oxygen generator, and the pulse oxygen generator can always automatically provide the corresponding target oxygen output. It can not only adapt to the altitude, but also realize the automatic adjustment of the oxygen output flow rate, without the need for the user to manually operate, further improving the user experience.

Claims

1. Pulse oxygen generator with adaptive altitude, characterized in that, At least include: The main body of the oxygen generator, which is used to execute the control method of the pulse oxygen generator with adaptive altitude; The control method of the pulse oxygen generator with adaptive altitude includes the following steps: Obtain the current atmospheric pressure; Determine the target oxygen output flow rate that the pulse oxygen generator needs to provide according to the current atmospheric pressure and the preset atmospheric pressure; Control the oxygen output of the pulse oxygen generator according to the target oxygen output flow rate; The specific method for determining the target oxygen output flow rate includes: Determine the oxygen output concentration of the pulse oxygen generator and the breathing frequency of the user; Calculate the target oxygen inhalation concentration required by the user according to the current atmospheric pressure and the preset atmospheric pressure; Determine the target pure oxygen amount that the pulse oxygen generator needs to provide during the user's single breath according to the target oxygen inhalation concentration; Calculate the target oxygen output flow rate according to the target pure oxygen amount, the oxygen output concentration and the breathing frequency of the user; The method for determining the target pure oxygen amount includes: Calculate the pure oxygen concentration in the air under the current atmospheric pressure; Calculate the target pure oxygen amount that the pulse oxygen generator needs to provide during the user's single breath according to the target oxygen inhalation concentration and the pure oxygen concentration in the air; The calculation formula for the target pure oxygen amount is as follows: ； In the formula, is the target pure oxygen amount, is the target oxygen inhalation concentration, is the pure oxygen concentration in the air under the current atmospheric pressure, is the tidal volume during a single breath of the user, is the dead space volume during the user's breathing.

2. The pulse oxygen generator with adaptive altitude according to claim 1, characterized in that, The calculation formula for the target oxygen inhalation concentration is as follows: ； Wherein, is the target oxygen inhalation concentration, is the current atmospheric pressure, is the preset atmospheric pressure.

3. The pulse oxygen generator with adaptive altitude according to claim 1, wherein The calculation formula for the pure oxygen concentration in the air under the current atmospheric pressure is as follows: ； In the formula, is the concentration of pure oxygen in air under the current atmospheric pressure, is the current atmospheric pressure.

4. The pulse oxygen generator with adaptive altitude according to claim 1, wherein The calculation formula for the target oxygen output flow rate is as follows: ； Wherein, is the target oxygen output flow rate, is the target pure oxygen amount, is the breathing frequency, is the oxygen output concentration of the pulse oxygen generator.

5. The pulse oxygen generator with adaptive altitude according to claim 1, characterized in that, The preset atmospheric pressure is the safe atmospheric pressure corresponding to the safe altitude.

6. The pulse oxygen generator with adaptive altitude according to any one of claims 1 to 5, characterized in that When the pulse oxygen generator is turned on, use the preset breathing frequency as the breathing frequency of the user to calculate the target oxygen output flow rate.

7. The pulse oxygen generator with adaptive altitude according to claim 6, characterized in that, Controlling the oxygen output of the pulse oxygen generator according to the oxygen output flow rate specifically includes: Set multiple working gears with different oxygen output flow rates in the pulse oxygen generator; Calculate the difference between the target oxygen output flow rate and the oxygen output flow rate corresponding to each working gear respectively, and feedback the working gear corresponding to the oxygen output flow rate with the smallest difference to the user.

8. The pulse oxygen generator with adaptive altitude according to claim 7, characterized in that, The method further includes: When the user continuously uses the pulse oxygen generator, the breathing frequency of the user is collected in real time through the pulse oxygen generator; Calculate the equivalent atmospheric pressure according to the breathing frequency collected in real time and the current oxygen output flow rate corresponding to the current working gear of the pulse oxygen generator, and calculate the corresponding equivalent altitude according to the equivalent atmospheric pressure; Judge whether it is necessary to adjust the working gear according to the equivalent altitude, and feedback the corresponding gear adjustment operation to the user when it is necessary to adjust the working gear.

9. The pulse oxygen generator with adaptive altitude according to claim 8, characterized in that, Judging whether it is necessary to adjust the working gear according to the equivalent altitude specifically includes: If the equivalent altitude is greater than the preset altitude range within the preset time, it is determined that an upshift operation needs to be performed. If the equivalent altitude is less than the preset altitude range within the preset time, it is determined that a downshift operation needs to be performed.

10. The pulse oxygen generator with adaptive altitude according to claim 8, characterized in that, The specific method for calculating the equivalent atmospheric pressure includes: Calculate the current pure oxygen amount provided by the pulse oxygen generator during the user's single breath according to the breathing frequency collected in real time, the current oxygen output flow rate corresponding to the current working gear and the oxygen output concentration; Calculate the current oxygen inhalation concentration of the user according to the current pure oxygen amount and the pure oxygen concentration in the air; Calculate the equivalent atmospheric pressure according to the current oxygen inhalation concentration and the current atmospheric pressure.

11. The pulse oxygen generator with adaptive altitude according to claim 10, characterized in that, The calculation formula for the current pure oxygen amount is as follows: ； In the formula, is the current pure oxygen amount, is the current oxygen output flow rate, is the breathing frequency, is the oxygen output concentration of the pulse oxygen generator.

12. The pulse oxygen generator with adaptive altitude according to claim 10, characterized in that, The calculation formula for the current oxygen inhalation concentration is as follows: ； In the formula, is the current oxygen inhalation concentration, is the current pure oxygen amount, is the pure oxygen concentration in the air under the current atmospheric pressure, is the tidal volume during a single breath of the user, is the dead space volume during the user's breathing.

13. The pulse oxygen generator with adaptive altitude according to claim 10, characterized in that, The calculation formula for the equivalent atmospheric pressure is as follows: ； In the formula, is the equivalent atmospheric pressure, is the current atmospheric pressure, is the current oxygen inhalation concentration.

14. The pulse oxygen generator with adaptive altitude according to claim 8, wherein, The calculation formula for the equivalent altitude is as follows: ； In the formula, is the equivalent altitude, is the equivalent atmospheric pressure.

15. The pulse oxygen generator with adaptive altitude according to claim 1, characterized in that, The method further includes: Calculating the current altitude corresponding to the current atmospheric pressure; Real-time feedback to the user of the current altitude and / or equivalent altitude.

16. The pulse oxygen generator with adaptive altitude according to claim 1, characterized in that, The method further includes: Determining the remaining battery life when the pulse oxygen generator operates continuously at the current working gear, and real-time feedback to the user of the remaining battery life.

17. The pulse oxygen generator with adaptive altitude according to claim 7, wherein The method further includes: When the user continuously uses the pulse oxygen generator, obtaining the physical state parameters of the user after oxygen inhalation, and judging whether the pulse oxygen generator can provide a safe oxygen supply concentration according to the magnitude relationship between the physical state parameters and the corresponding preset parameters. If not, feedback to the user to perform a gear-up operation. The physical state parameters include: heart rate and / or blood oxygen saturation.

18. The pulse oxygen generator with adaptive altitude according to claim 6, wherein, The method further includes: When the user continuously uses the pulse oxygen generator, the breathing frequency of the user is collected in real time by the pulse oxygen generator; Calculating in real time the target oxygen output flow rate required by the pulse oxygen generator according to the collected breathing frequency, and controlling the oxygen output of the pulse oxygen generator according to the target oxygen output flow rate calculated in real time.

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