CN111694382A - Air supply concentration adjusting method, air supply concentration adjusting system and oxygen generator - Google Patents
Air supply concentration adjusting method, air supply concentration adjusting system and oxygen generator Download PDFInfo
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- CN111694382A CN111694382A CN201910197343.4A CN201910197343A CN111694382A CN 111694382 A CN111694382 A CN 111694382A CN 201910197343 A CN201910197343 A CN 201910197343A CN 111694382 A CN111694382 A CN 111694382A
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- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D11/00—Control of flow ratio
- G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
- G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
- G05D11/131—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components
- G05D11/132—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components by controlling the flow of the individual components
Abstract
The invention provides a method and a system for adjusting gas supply concentration and an oxygen generator, wherein the method for adjusting the gas supply concentration comprises the following steps: obtaining a respiratory rate of a user; setting the opening time of the air supply solenoid valve in each air supply period according to the breathing frequency of the user; measuring the concentration of the gas at each gas supply cycle; adjusting the opening time according to the concentration of the gas so that the concentration of the gas is within a first range. The gas supply system controls the opening time of the gas supply electromagnetic valve based on the gas concentration, and can ensure that the gas concentration can meet the use requirement of a user.
Description
Technical Field
The embodiment of the invention relates to the technical field of gas supply, in particular to a gas supply concentration adjusting method, a gas supply concentration adjusting system and an oxygen generator.
Background
In the prior art, particularly in the medical field, gas supply apparatuses for generating a prescribed type of gas and supplying the gas to a user for the user to inhale the gas are used in large quantities. Such gas supply equipment is, for example, an oxygen generator, an atomizer, or the like.
It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the invention.
Disclosure of Invention
The inventor finds that portable oxygen generators available on the market all provide oxygen when inhaling, and the oxygen can be provided in an intermittent or pulse mode. However, due to the limited capability of the product itself, the amount of oxygen and the concentration of oxygen generated by the pulse cannot meet the use requirements of the user.
In order to solve at least one of the above problems, embodiments of the present invention provide a gas supply concentration adjusting method, a gas supply concentration adjusting system, and an oxygen generator, which adjust the opening time of a gas supply electromagnetic valve based on the gas concentration or the gas concentration and the gas pressure in a gas storage tank, so as to ensure that the gas concentration or the gas concentration and the gas flow can meet the use requirements of users.
According to a first aspect of embodiments of the present invention, there is provided a supply gas concentration adjustment method, wherein the method includes:
obtaining a respiratory rate of a user;
setting the opening time of the air supply solenoid valve in each air supply period according to the breathing frequency of the user;
measuring the concentration of the gas at each gas supply cycle;
adjusting the opening time according to the concentration of the gas so that the concentration of the gas is within a first range.
According to a second aspect of the embodiments of the present invention, there is provided a supplied gas concentration adjustment system, wherein the supplied gas concentration adjustment system includes:
a first sensor that measures a respiratory rate of a user;
a second sensor that measures the concentration of the gas at each gas supply cycle;
and the controller is used for setting the opening time of the gas supply electromagnetic valve in each gas supply period according to the breathing frequency and adjusting the opening time according to the concentration of the gas, so that the concentration of the gas is in a first range.
According to a third aspect of embodiments of the present invention, there is provided an oxygen generator comprising the supply air concentration adjustment system of the foregoing second aspect.
According to a fourth aspect of embodiments of the present invention, there is provided a computer-readable program, wherein when the program is executed in an air supply apparatus, the program causes a computer to execute the method of the foregoing first aspect in the air supply apparatus.
According to a fifth aspect of embodiments of the present invention, there is provided a storage medium storing a computer-readable program, wherein the computer-readable program causes a computer to execute the method of the foregoing first aspect in an air supply apparatus.
One beneficial effect of the embodiment of the invention is that the opening time of the gas supply electromagnetic valve is controlled based on the gas concentration or the gas concentration and the gas pressure in the gas storage tank, so that the gas concentration or the gas concentration and the gas flow can meet the use requirements of users.
Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In the drawings:
FIG. 1 is a schematic external view of an oxygen generator according to an embodiment of the present invention;
FIG. 2 is a schematic view of the internal structure of an oxygen generator according to an embodiment of the present invention;
FIG. 3 is a schematic view of a supplied gas concentration adjusting method according to embodiment 1 of the present invention;
FIG. 4 is a schematic of breathing frequency;
FIG. 5 is a schematic diagram of one embodiment of the feed gas concentration adjustment method shown in FIG. 3;
FIG. 6 is another schematic view of the supplied gas concentration adjusting method according to embodiment 1 of the present invention;
FIG. 7 is a schematic diagram of one embodiment of the feed gas concentration adjustment method shown in FIG. 6;
FIG. 8 is a schematic diagram of another embodiment of the supply air concentration adjustment method shown in FIG. 6;
FIG. 9 is a schematic view of a supplied gas concentration adjusting system according to embodiment 2 of the present invention;
fig. 10 is another internal structure diagram of the oxygen generator of the embodiment of the invention.
Detailed Description
The foregoing and other features of the invention will become apparent from the following description taken in conjunction with the accompanying drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the embodiments in which the principles of the invention may be employed, it being understood that the invention is not limited to the embodiments described, but, on the contrary, is intended to cover all modifications, variations, and equivalents falling within the scope of the appended claims.
In the embodiments of the present invention, the terms "first", "second", and the like are used for distinguishing different elements by name, but do not denote a spatial arrangement, a temporal order, or the like of the elements, and the elements should not be limited by the terms. The term "and/or" includes any and all combinations of one or more of the associated listed terms.
In embodiments of the invention, the singular forms "a", "an", and the like include the plural forms and are to be construed broadly as "a" or "an" and not limited to the meaning of "a" or "an"; furthermore, the term "comprising" should be understood to include both the singular and the plural, unless the context clearly dictates otherwise. Furthermore, the term "based on" should be understood as "based at least in part on" and the term "based on" should be understood as "based at least in part on" unless the context clearly dictates otherwise.
For convenience of explanation, the embodiment of the present invention is described by taking an example in which the gas supply device is an oxygen generator, but the embodiment of the present invention is not limited thereto, and the gas supply device may be another gas supply device such as an atomizer, for example.
Fig. 1 is a schematic external view of an oxygen generator according to an embodiment of the present invention, and fig. 2 is a schematic internal configuration view of the oxygen generator shown in fig. 1. As shown in fig. 1, the oxygen generator comprises: a cabinet housing 100 and an oxygen outlet 200. As shown in fig. 2, the oxygen generator further comprises: a pressure regulating valve 300, a heat sink 400, an integrated adsorption tower 500, a bacterial filter 600, and an oxygen supply system 700. The supply gas concentration adjustment method of the present embodiment may be applied to the oxygen supply system 700, that is, the oxygen supply system 700 may include the supply gas concentration adjustment system of the present embodiment.
Various embodiments of the present invention will be described below with reference to the drawings.
Example 1
The embodiment provides a supply air concentration adjusting method. The method may be used to generate a specified type of gas and provide the gas to a user's gas supply, which may be, for example, an oxygen generator, an atomizer, or the like.
Fig. 3 is a schematic diagram of the supplied gas concentration adjustment method of the present embodiment. As shown in fig. 3, the method includes:
step 301: obtaining a respiratory rate of a user;
step 302: setting the opening time of the air supply solenoid valve in each air supply period according to the breathing frequency of the user;
step 303: measuring the concentration of the gas at each gas supply cycle;
step 304: adjusting the opening time according to the concentration of the gas so that the concentration of the gas is within a first range.
In this embodiment, the opening time of the gas supply solenoid valve is short due to the capacity limit of the compressor, and the gas is supplied to the user by the pulse at the moment of inhalation of the user. This gas reaches user's lung and spreads to alveolus through user's trachea, makes gas concentration reach saturation, and the opening time of this embodiment according to gas concentration control gas supply solenoid valve can guarantee that gas concentration can satisfy user's user demand.
In this embodiment, the breathing rate (step 301) and the concentration of the gas (step 303) of the user can be obtained by measuring with a sensor, and the embodiment does not limit the type and the measuring manner of the sensor. In addition, the breathing frequency of the user (step 301) may also be obtained by calculation, and the embodiment does not limit the obtaining manner.
In this embodiment, the opening time of the air supply solenoid valve in each air supply period may be set according to the breathing frequency of the user (step 302), and the specific setting method is not limited in this embodiment, and reference may be made to the prior art. This opening time is an initial value of the opening time of gas supply solenoid valve, and this embodiment adjusts this initial value according to gas concentration, and in next gas supply cycle, according to the opening time after the adjustment control the solenoid valve for gas concentration satisfies user's demand.
Fig. 4 is a schematic diagram of the measured breathing frequency of the user, and as shown in fig. 4, according to the method of the embodiment, the opening time T of the gas supply solenoid valve in each gas supply period T is set according to the measured breathing frequency of the user, and then the opening time T is adjusted according to the concentration of the gas, so that the concentration of the gas is within the first range, thereby ensuring the concentration of the gas in the next gas supply period. In this embodiment, as shown in fig. 4, the adjusted opening time is denoted as T', and since the opening time of the air supply solenoid valve is adjusted in real time in each air supply period, the use requirement of the user on the oxygen concentration is met.
In this embodiment, a threshold value (referred to as a first threshold value) that ensures the gas concentration required by the user may be set, and when the concentration of the gas is less than the first threshold value, the concentration of the gas may be increased by shortening the opening time of the gas supply solenoid valve.
Fig. 5 is a schematic diagram of an embodiment of the supplied air concentration adjustment method of the present embodiment, and as shown in fig. 5, the method includes:
step 501: obtaining a respiratory rate of a user;
step 502: setting initial opening time T of the air supply electromagnetic valve;
step 503: measuring the concentration of the gas at each gas supply cycle;
step 504: judging whether the concentration of the gas is less than a first threshold value; if yes, executing step 505, otherwise executing step 506;
step 505: subtracting the first preset time from the initial opening time to be used as the adjusted opening time, and returning to the step 503;
step 506: the initial turn-on time plus the second predetermined time is taken as the adjusted turn-on time and returns to step 503.
In the present embodiment, when the gas concentration is less than the preset first threshold, the opening time of the gas supply solenoid valve is reduced, the gas concentration of the next gas supply cycle is increased, and the demand of the user on the gas concentration is met; and under the condition that the gas concentration is not less than the preset first threshold value, the opening time of the gas supply electromagnetic valve is increased, and the maximization of the gas quantity is ensured under the condition that the gas concentration is met. By implementing the above processing in each gas supply period, the opening time of the gas supply electromagnetic valve can be adjusted in real time, and the use requirements of users on gas concentration and gas quantity are ensured.
In this embodiment, the opening time of the gas supply solenoid valve is adjusted greatly according to the breathing frequency of the user, and then the opening time of the gas supply solenoid valve is adjusted slightly according to the concentration of the gas by using the first predetermined time or the second predetermined time, so that the requirements of the user on the concentration of the gas and the quantity of the gas are met.
In this embodiment, the implementation manner of steps 501-503 is the same as that of steps 301-303 in fig. 3, and the description is omitted here.
In the present embodiment, the first threshold may be set to be slightly higher than the minimum gas concentration required by the user, for example, the minimum gas concentration required by the user is 82%, and the first threshold may be set to 90%, so that the gas concentration can be adjusted up or down to 90% to satisfy both the user demand for the gas concentration and the user demand for the gas amount. The above is merely an example, but the present embodiment is not limited thereto, and the first threshold value may be set to another value depending on experimental data, clinical data, or the type of supplied air. In addition, in this embodiment, the values of the first predetermined time and the second predetermined time are not limited, and the values may be determined according to the opening time set in the step 502 and by combining other relevant factors, such as experimental data, clinical data, or the type of supplied air.
In this embodiment, the implementation of step 501 may be based on a user's operation on the gas supply apparatus, for example, the user presses a start button or a restart button, and opens the gas supply apparatus to start using the gas supply apparatus; or may be based on the needs of the system, such as the system activating step 501 according to system settings. This embodiment is not limited thereto. In addition, in this embodiment, a user or a system may end the flow of fig. 5 at any time point, and this embodiment does not limit a specific embodiment of ending the flow.
Fig. 6 is another schematic diagram of the supplied gas concentration adjustment method of the present embodiment. As shown in fig. 6, the method includes:
step 601: obtaining a respiratory rate of a user;
step 602: setting the opening time of the air supply solenoid valve in each air supply period according to the breathing frequency of the user;
step 603: measuring the concentration of the gas and the pressure in the gas storage tank at each gas supply period;
step 604: adjusting the opening time according to the concentration of the gas and the gas pressure in the gas tank so that the concentration of the gas is within a first range and the flow rate of the gas is within a second range.
In this embodiment, the opening time of the gas supply solenoid valve is controlled by comprehensively considering the gas concentration and the gas pressure in the gas storage tank, so that the flow of the gas can meet the requirements of the user on the premise that the gas concentration meets the requirements of the user.
In the present embodiment, the implementation manners of step 601 and step 602 and the measurement manner of the concentration of the gas in step 603 are the same as those of step 301-303 of the embodiment shown in fig. 3, and the description thereof is omitted here.
In this embodiment, the air pressure in the air tank (step 603) may also be obtained by measuring with a sensor, and the type and the measuring manner of the sensor are not limited in this embodiment. When the opening time of the gas supply electromagnetic valve is changed, the atmospheric pressure in the gas storage tank is also changed, the gas pressure in the gas storage tank directly influences the flow of the supplied gas, and when the gas pressure is higher, the flow of the supplied gas is increased, but the gas concentration is reduced; when the gas pressure is small, the flow rate of the supplied gas decreases, but the gas concentration increases. The embodiment adjusts the opening time of the gas supply electromagnetic valve by comprehensively considering the gas concentration and the gas pressure of the gas storage tank, so that the requirement of a user on the gas concentration is met, and the requirement of the user on the gas flow is also met.
Fig. 7 is a schematic diagram of an embodiment of the supplied air concentration adjustment method of the present embodiment, which, as shown in fig. 7, includes:
step 701: obtaining a respiratory rate of a user;
step 702: setting initial opening time T of the air supply electromagnetic valve;
step 703: measuring the concentration of the gas and the pressure in the gas storage tank at each gas supply period;
step 704: determining correction time delta T according to the air pressure in the air storage tank;
step 705: judging whether the concentration of the gas is less than a first threshold value; if yes, executing step 706, otherwise executing step 707;
step 706: subtracting the correction time from the initial opening time, subtracting a first preset time from the initial opening time to obtain an adjusted time, and returning to the step 703;
step 707: the adjusted time is obtained by subtracting the corrected time from the initial on time plus a second predetermined time and returning to step 703.
In this embodiment, the initial opening time of the gas supply solenoid valve is corrected according to the gas pressure in the gas tank, and when the gas concentration is less than the preset first threshold, the opening time of the gas supply solenoid valve after correction is reduced, the gas concentration in the next gas supply cycle is increased, and the demand of the user on the gas concentration is met; and under the condition that the gas concentration is not less than the preset first threshold value, increasing the opening time of the corrected gas supply electromagnetic valve, and ensuring the maximization of the gas quantity under the condition of meeting the gas concentration. By implementing the above processing in each gas supply period, the opening time of the gas supply electromagnetic valve can be adjusted in real time, and the use requirements of users on gas concentration and gas flow are ensured.
In this embodiment, the opening time of the gas supply solenoid valve is adjusted largely according to the breathing frequency of the user, and is corrected according to the gas pressure in the gas tank, and then the corrected opening time is adjusted finely according to the gas concentration by using the first predetermined time or the second predetermined time, so that the demand of the user on the gas concentration and the demand of the user on the gas amount are met.
In this embodiment, the implementation manner of step 701-703 is the same as that of step 601-603 in fig. 6, and the description thereof is omitted here.
In this embodiment, in step 704, the calibration time corresponding to the current air pressure in the air tank may be determined by a table lookup. For example, in step 704, the air pressure in the air tank may be compared with a preset "comparison table of air pressure and calibration time", and the calibration time corresponding to the air pressure in the air tank may be determined by looking up the table.
Table 1 is an example of a table comparing air pressure to correction time.
TABLE 1
As shown in table 1, different air pressure values correspond to different calibration times, and when the air pressure in the air tank is obtained through measurement, the corresponding calibration time can be determined by looking up such a table. Table 1 is merely an example, and different tables similar to table 1 may be preset to determine the calibration time corresponding to different tank pressures, according to different air supply types, different breathing frequencies of users, and the like.
In table 1, each gas pressure value corresponds to one or more correction times, whereby the correction time can be determined not only based on the gas pressure in the gas tank, but also based on the level of decrease in the gas concentration, as will be described later. In table 1, the corresponding relationship between the air pressure value and the calibration time is shown, and in other embodiments, a table of the corresponding relationship between the air pressure range and the calibration time may be preset, and the calibration time corresponding to the air pressure in the air storage tank is found by looking up the table, which is not described herein again.
In this embodiment, in step 704, the correction time required for the current air pressure in the air tank may be calculated by a functional calculation. For example, in step 704, a predetermined "calibration time calculation formula" that is a relational expression between the gas pressure inside the gas tank and the calibration time may be used to calculate the calibration time based on the measured gas pressure inside the gas tank, and the corresponding calibration time may be obtained by substituting the measured gas pressure inside the gas tank into the relational expression.
The implementation of the relational expression is not limited in this embodiment, and for example, the relational expression may be:
ΔT＝aX+b
where Δ T is the calibration time, X is the measured gas pressure in the tank, a and b are constants, and b is an initial value of Δ T.
In the present embodiment, "first threshold value" of step 705, "first predetermined time" of step 706, "second predetermined time" of step 707, and the start and end of the method of fig. 7 are the same as those of the embodiment of fig. 5, and the description thereof is omitted here.
Fig. 8 is a schematic diagram of another embodiment of the supplied air concentration adjustment method of the present embodiment, which, as shown in fig. 8, includes:
step 801: obtaining a respiratory rate of a user;
step 802: setting initial opening time T of the air supply electromagnetic valve;
step 803: measuring the concentration of the gas and the pressure in the gas storage tank at each gas supply period;
step 804: determining correction time delta T according to the air pressure in the air storage tank;
step 805: judging whether the concentration of the gas is less than a first threshold value; if yes, go to step 806, otherwise go to step 807;
step 806: judging whether the absolute value of the difference between the concentration of the gas and the first threshold is larger than a second threshold, if so, executing step 808, otherwise, executing step 809;
step 807: the adjusted time is obtained by subtracting the corrected time from the initial on time plus a second predetermined time, and the process returns to step 803;
step 808: subtracting the correction time from the initial opening time, subtracting a first preset time from the initial opening time to obtain an adjusted time, and returning to the step 803;
step 809: and reducing the adjustment amplitude of the correction time, and subtracting the adjusted correction time from the opening time to obtain the adjusted opening time.
In the present embodiment, the initial opening time of the gas supply solenoid valve is corrected based on the gas pressure in the gas tank, and when the gas concentration is less than the first threshold value set in advance, the adjustment method of the opening time of the solenoid valve is continuously determined based on the level of decrease in the gas concentration, and when the level of decrease in the gas concentration is not large (no in step 806), the opening time of the solenoid valve is adjusted by decreasing the adjustment range of the correction time; when the level of the gas concentration reduction is relatively large (yes in step 806), quickly adjusting the opening time of the electromagnetic valve through first preset time to meet the requirement of a user on the gas concentration; in addition, when the gas concentration is not less than the preset first threshold value, the opening time of the gas supply electromagnetic valve after correction is increased, and the maximization of the gas quantity is ensured under the condition that the gas concentration is satisfied. By implementing the above processing in each gas supply period, the opening time of the gas supply electromagnetic valve can be adjusted in real time, and the use requirements of users on gas concentration and gas flow are ensured.
In this embodiment, similar to the embodiment of fig. 7, the opening time of the gas supply solenoid valve is adjusted greatly according to the breathing frequency of the user, and is corrected according to the gas pressure in the gas storage tank, and then the opening time of the solenoid valve is adjusted slightly according to the concentration of the gas by using the first predetermined time or the second predetermined time or the amplitude of the correction time, so as to meet both the demand of the user for the gas concentration and the demand of the user for the gas amount.
In the present embodiment, the implementation manner of steps 801-.
In this embodiment, the implementation manners of steps 804-805 and 808 are the same as those of steps 704-706 in fig. 7, and the description thereof is omitted here.
In the present embodiment, in step 806, when the gas concentration is less than the first threshold value set in advance, it is continuously determined whether the gas concentration is too low, that is, the absolute value of the difference between the gas concentration and the first threshold value is greater than the second threshold value, and if it is determined that the determination is yes, it means that the gas concentration needs to be rapidly increased, the opening time of the gas supply solenoid valve is decreased by subtracting "first predetermined time" from the corrected opening time (T + Δ T) to increase the gas concentration (step 807), and at this time, the first predetermined time may be set to a large value so that the gas concentration is rapidly increased in the next gas supply period; if the determination is negative, that is, the current gas concentration is lower than the first threshold but is tolerable, the adjustment range of the correction time Δ T is decreased (step 809), that is, the opening time of the gas supply solenoid valve is increased by a smaller step size with respect to the corrected opening time (T + Δ T) to increase the gas concentration of the next gas supply period.
In step 809, the adjustment range of the correction time Δ T is decreased in a different manner according to the determination manner of the correction time Δ T. If the correction time delta T is determined in a table look-up mode, the correction time smaller than the delta T can be used as the adjusted correction time; taking table 1 as an example, if the current air pressure in the air tank is 110Kpa, the correction time Δ T is determined to be 0.06 seconds in step 804, and 0.02 seconds may be used as the adjusted correction time in step 809. If the correction time Δ T is determined functionally, the adjustment magnitude of the correction time Δ T can be reduced by reducing the above constant.
In the present embodiment, the second threshold value is, for example, 8%, but the present embodiment is not limited to this, and the second threshold value may be another value depending on experimental data, clinical data, or the type of supplied air.
This embodiment can guarantee that gas concentration and gas flow can satisfy user's user demand based on gas concentration or the opening time of the atmospheric pressure control air feed solenoid valve in gas concentration and the gas holder.
Example 2
The present embodiment provides a supplied air concentration adjusting system. The system can be used in gas supply equipment, such as the oxygen generator, the atomizer and the like. The same contents of this embodiment as embodiment 1 will not be described again.
Fig. 9 is a schematic diagram of the supplied air concentration adjusting system 900 of the present embodiment. As shown in fig. 9, the system includes: a first sensor 901, a second sensor 902, and a controller 903.
The first sensor 901 is used to measure the breathing frequency of the user ( steps 301, 401, 501, 601, 701, 801 described above); the second sensor 902 is used to measure the concentration of the gas (measurement of the gas concentration in the aforementioned steps 303, 503, and steps 603, 703, and 803) at each gas supply cycle; the controller 903 is configured to set an opening time of the gas supply solenoid valve in each gas supply cycle according to the breathing rate ( steps 302, 502, 602, 702, 802), and adjust the opening time according to the concentration of the gas (steps 304, 505), so that the concentration of the gas is within a first range.
In this embodiment, based on the opening time of gas concentration control gas supply solenoid valve, can guarantee that gas concentration and gas flow can satisfy user's user demand.
In one embodiment, when the concentration of the gas is less than a first threshold, the controller 903 sets the opening time minus a first predetermined time as an adjusted opening time (step 505); when the concentration of the gas is not less than the first threshold value, the adjusted on time is determined by adding a second predetermined time to the on time (step 506).
In one embodiment, as shown in fig. 9, the feed gas concentration adjustment system 900 further comprises:
a third sensor 904 that measures the air pressure inside the air tank at each air supply cycle;
the controller 903 adjusts the opening time according to the concentration of the gas and the pressure in the gas storage tank (steps 604, 706-.
In one example, the controller 903 determines a correction time according to the gas pressure in the gas tank (step 704), and when the concentration of the gas is less than a first threshold, subtracts the correction time from the opening time and subtracts a first predetermined time to obtain an adjusted opening time (step 706), and when the concentration of the gas is not less than the first threshold, adds a second predetermined time to the opening time to obtain an adjusted opening time (step 707).
In another example, the controller 903 determines a correction time based on the gas pressure in the gas tank (step 804), and if the concentration of the gas is not less than a first threshold, subtracts the correction time and adds a second predetermined time to the opening time as an adjusted opening time (step 807), and if the concentration of the gas is less than the first threshold and the absolute value of the difference between the concentration of the gas and the first threshold is greater than the second threshold (yes in step 806), subtracts the correction time and subtracts the first predetermined time from the opening time to obtain an adjusted opening time (step 808); when the concentration of the gas is smaller than a first threshold value and the absolute value of the difference between the concentration of the gas and the first threshold value is not larger than a second threshold value (no in step 806), the adjustment width of the correction time is reduced and the adjusted correction time is subtracted from the on time to obtain an adjusted on time (step 809).
In this embodiment, the controller 903 may compare the air pressure in the air tank with a preset air pressure and calibration time comparison table; and determining the corresponding correction time according to the air pressure in the air storage tank. The correction time may also be calculated based on the air pressure in the air reservoir and a preset calculation formula for correction time. The specific implementation is as described in example 1, and the description is omitted here.
This embodiment is based on the opening time of the atmospheric pressure control gas supply solenoid valve in gas concentration or gas concentration and the gas holder, can guarantee that gas concentration or gas concentration and gas flow can satisfy user's user demand.
Example 3
This embodiment provides a gas supply apparatus including the gas supply concentration adjustment system described in embodiment 2, and since the gas supply concentration adjustment system has been described in detail in embodiment 2, the contents thereof are incorporated herein and will not be described again.
In this embodiment, the gas supply device may be an oxygen generator or an atomizer, but the embodiment is not limited thereto, and any gas supply device that provides gas to a user to meet the user's needs is included in the scope of the present application.
Fig. 1 is a schematic external view of an oxygen generator of the present embodiment, fig. 2 is a schematic internal configuration diagram of the oxygen generator of the present embodiment, and fig. 10 is a schematic internal configuration diagram of the oxygen generator of the present embodiment.
In this embodiment, as shown in fig. 1 and 2, the oxygen generator includes: the oxygen supplying apparatus includes a cabinet case 100, an oxygen outlet 200, a pressure regulating valve 300, a heat sink 400, an integrated adsorption tower 500, a bacteria filter 600, and an oxygen supplying system 700. In addition, as shown in fig. 10, the oxygen generator further includes: an oxygen storage tank pressure sensor 1001, a respiratory pressure variation detection micro-pressure sensor 1002, an atmospheric pressure detection pressure sensor 1003, a tee joint 1004, an oxygen output control electromagnetic valve 1005, an air inlet 1006, an air inlet silencer 1007, a compressor 1008, an oxygen concentration flow sensor 1009, a control processing system 1010 and an exhaust silencer 1011.
In this embodiment, the pressure regulating valve 300, the heat sink 400, the integrated adsorption tower 500 and the bacteria filter 600 may be included as a component of the oxygen supply system 700, and the oxygen supply system 700 may further include, in addition to the above components, an air inlet 1006, a compressor 1008, an air inlet muffler 1007, an oxygen concentration flow rate sensor 1009, an exhaust muffler 1011 and an oxygen tank pressure sensor 1001 shown in fig. 10, and the oxygen supply system 700 may further include not shown: an air inlet filter, a four-position two-way electromagnetic valve, an exhaust one-way valve and the like. Regarding the functions of the above-described components, reference is made to the prior art, and the description thereof is omitted here. The oxygen concentration flow rate sensor 1009 can function as the second sensor 902 of embodiment 2, and the oxygen tank pressure sensor 1001 can function as the third sensor 904 of embodiment 2.
In this embodiment, the control processing system 1010 is used to control the operation of the components of the oxygen generator. For example, it can function as the controller 903 of embodiment 2.
In this embodiment, the oxygen generator may further include a respiration detection system, not shown, which may include a tee junction 1004 connecting the oxygen supply system 700 and the oxygen outlet 200, a respiratory pressure variation detection micro-pressure sensor 1002, an atmospheric pressure detection pressure sensor 1003, and an oxygen output control electronic valve 1005. The respiratory pressure fluctuation detection micro-pressure sensor 1002 can function as the first sensor 901 of embodiment 2, and the oxygen output control electronic valve 1005 can function as the supply solenoid valve of embodiments 1 and 2.
In this embodiment, the supplied air concentration adjusting method according to embodiment 1 of the present invention may be applied to the oxygen generator, that is, the oxygen generator may include the supplied air concentration adjusting system according to embodiment 2 of the present invention.
Through the gas supply equipment of this embodiment, based on the opening time of gas concentration or gas concentration and the atmospheric pressure control gas supply solenoid valve in the gas holder, can guarantee that gas concentration or gas concentration and gas flow can satisfy user's user demand.
Embodiments of the present invention also provide a computer-readable program, where when the program is executed in a gas supply apparatus, the program causes a computer to execute the method of embodiment 1 in the gas supply apparatus.
The embodiment of the present invention also provides a storage medium storing a computer-readable program, wherein the computer-readable program enables a computer to execute the method described in embodiment 1 in an air supply apparatus.
The above method/system of the present invention can be implemented by hardware, and can also be implemented by hardware and software. The present invention relates to a computer-readable program which, when executed by a logic section, enables the logic section to realize the above-described apparatus or constituent section, or to realize the above-described various methods or steps. Logic components such as field programmable logic components, microprocessors, processors used in computers, and the like. The present invention also relates to a storage medium such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like, for storing the above program.
The methods/systems described in connection with the embodiments of the invention may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. For example, one or more of the functional block diagrams and/or one or more combinations of the functional block diagrams illustrated in fig. 9 may correspond to individual software modules of a computer program flow or may correspond to individual hardware modules. These software modules may correspond to the various steps shown in fig. 3, 5-8, respectively. These hardware modules may be implemented, for example, by solidifying these software modules using a Field Programmable Gate Array (FPGA).
A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. A storage medium may be coupled to the processor such that the processor can read information from, and write information to, the storage medium; or the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The software module may be stored in the memory of the device or in a memory card that is insertable into the device. For example, if the apparatus employs a relatively large capacity MEGA-SIM card or a large capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large capacity flash memory device.
One or more of the functional blocks and/or one or more combinations of the functional blocks described in the figures can be implemented as a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any suitable combination thereof designed to perform the functions described herein. One or more of the functional blocks and/or one or more combinations of the functional blocks described in connection with the figures may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP communication, or any other such configuration.
The present application has been described in conjunction with specific embodiments, but it should be understood by those skilled in the art that these descriptions are intended to be illustrative, and not limiting. Various modifications and adaptations of the present application may occur to those skilled in the art based on the teachings herein and are within the scope of the present application.
Claims (15)
1. A method for adjusting a concentration of supplied gas, the method comprising:
obtaining a respiratory rate of a user;
setting the opening time of the air supply solenoid valve in each air supply period according to the breathing frequency of the user;
measuring the concentration of the gas at each gas supply cycle;
adjusting the opening time according to the concentration of the gas so that the concentration of the gas is within a first range.
2. The method of claim 1, wherein adjusting the on-time as a function of the concentration of the gas comprises:
judging whether the concentration of the gas is less than a first threshold value;
if so, subtracting first preset time from the opening time to serve as the adjusted opening time;
and if not, adding a second preset time to the opening time to serve as the adjusted opening time.
3. The method of claim 1, wherein the method further comprises:
measuring the air pressure in the air storage tank in each air supply period;
adjusting the opening time according to the concentration of the gas and the gas pressure in the gas tank so that the concentration of the gas is within a first range and the flow rate of the gas is within a second range.
4. The method of claim 3, wherein adjusting the on-time based on the concentration of the gas and the pressure of the gas within the gas tank comprises:
determining correction time according to the air pressure in the air storage tank;
judging whether the concentration of the gas is less than a first threshold value;
if the judgment result is yes, subtracting the correction time from the opening time, and subtracting a first preset time from the opening time to be used as the adjusted time;
if not, subtracting the correction time from the opening time and adding a second preset time to be used as the adjusted time.
5. The method of claim 3, wherein adjusting the on-time based on the concentration of the gas and the pressure of the gas within the gas tank comprises:
determining correction time according to the air pressure in the air storage tank;
judging whether the concentration of the gas is less than a first threshold value;
if not, subtracting the correction time from the opening time and adding a second preset time to be used as the adjusted time;
if the judgment is yes, judging whether the absolute value of the difference between the concentration of the gas and the first threshold is larger than a second threshold;
if so, subtracting the correction time from the opening time and then subtracting a first preset time to be used as the adjusted opening time;
if not, reducing the adjustment amplitude of the correction time, and subtracting the adjusted correction time from the opening time to serve as the adjusted opening time.
6. The method of claim 4 or 5, wherein determining a correction time based on the air pressure within the air reservoir comprises:
comparing the air pressure in the air storage tank with a preset air pressure and correction time comparison table;
and determining the corresponding correction time according to the air pressure in the air storage tank.
7. The method of claim 4 or 5, wherein determining a correction time based on the air pressure within the air reservoir comprises:
and calculating the correction time according to the air pressure in the air storage tank and a preset correction time calculation formula.
8. A supplied air concentration adjustment system, comprising:
a first sensor that measures a respiratory rate of a user;
a second sensor that measures the concentration of the gas at each gas supply cycle;
and the controller is used for setting the opening time of the gas supply electromagnetic valve in each gas supply period according to the breathing frequency and adjusting the opening time according to the concentration of the gas, so that the concentration of the gas is in a first range.
9. The gas supply concentration adjustment system according to claim 8, wherein the controller subtracts a first predetermined time from the on time as an adjusted on time when the concentration of the gas is less than a first threshold value, and adds a second predetermined time to the on time as an adjusted on time when the concentration of the gas is not less than the first threshold value.
10. The supplied gas concentration adjustment system according to claim 8, further comprising:
a third sensor that measures the air pressure in the air tank at each air supply cycle;
the controller adjusts the opening time according to the concentration of the gas and the gas pressure in the gas tank so that the concentration of the gas is within a first range and the flow rate of the gas is within a second range.
11. The gas supply concentration adjustment system according to claim 10, wherein the controller determines a correction time based on the gas pressure in the gas tank, subtracts the correction time from the opening time by a first predetermined time as an adjusted opening time when the concentration of the gas is less than a first threshold, and adds a second predetermined time to the opening time by the correction time as the adjusted opening time when the concentration of the gas is not less than the first threshold.
12. The gas supply concentration adjustment system according to claim 10, wherein the controller determines a correction time based on the gas pressure in the gas tank, and when the concentration of the gas is not less than the first threshold, subtracts the correction time from the opening time plus a second predetermined time as an adjusted opening time, and when the concentration of the gas is less than the first threshold and the absolute value of the difference between the concentration of the gas and the first threshold is greater than the second threshold, subtracts the correction time from the opening time plus the first predetermined time as the adjusted opening time; and when the concentration of the gas is smaller than a first threshold value and the absolute value of the difference between the concentration of the gas and the first threshold value is not larger than a second threshold value, reducing the adjustment amplitude of the correction time, and subtracting the adjusted correction time from the opening time to obtain the adjusted opening time.
13. The supplied gas concentration adjusting system according to claim 11 or 12, wherein the controller compares the gas pressure in the gas tank with a preset gas pressure versus correction time table; and determining the corresponding correction time according to the air pressure in the air storage tank.
14. The supplied air concentration adjusting system according to claim 11 or 12, wherein the controller calculates the correction time based on the air pressure in the air tank and a preset correction time calculation formula.
15. An oxygen generator, wherein the oxygen generator comprises the feed gas concentration regulation system of any one of claims 8-14.
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| CN201910197343.4A CN111694382A (en) | 2019-03-15 | 2019-03-15 | Air supply concentration adjusting method, air supply concentration adjusting system and oxygen generator |
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| CN201910197343.4A CN111694382A (en) | 2019-03-15 | 2019-03-15 | Air supply concentration adjusting method, air supply concentration adjusting system and oxygen generator |
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