CN115554553A - Pulse type oxygen generation control method, device, controller and storage medium - Google Patents
Pulse type oxygen generation control method, device, controller and storage medium Download PDFInfo
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 375
- 239000001301 oxygen Substances 0.000 title claims abstract description 375
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 375
- 238000003860 storage Methods 0.000 title claims abstract description 76
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- 230000036391 respiratory frequency Effects 0.000 claims abstract description 37
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- 230000000241 respiratory effect Effects 0.000 claims description 7
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 6
- 229910001882 dioxygen Inorganic materials 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 230000002035 prolonged effect Effects 0.000 claims description 3
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- 230000006641 stabilisation Effects 0.000 abstract 1
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
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- 238000005265 energy consumption Methods 0.000 description 1
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- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
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- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
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Abstract
The invention discloses a pulse type oxygen generation control method, a pulse type oxygen generation control device, a pulse type oxygen generation controller and a storage medium, wherein the method comprises the following steps: presetting a control time sequence model of the pulse type oxygen generating device, wherein the model comprises a preset corresponding relation of oxygen output flow, system standard pressure and standard time sequence, calculating the current respiratory frequency of a user, and obtaining an anchoring reference time sequence corresponding to the current respiratory frequency; acquiring a current time sequence and a current oxygen storage pressure to obtain a corresponding compensation coefficient; calibrating a new oxygen outlet time sequence under the current oxygen storage pressure to control the single oxygen outlet flow in real time; the device comprises an oxygen production end, an oxygen output end and a control end; the control end repeatedly executes the steps to complete the stable real-time control of the oxygen output flow when the user breathes each time. According to the scheme, an oxygen outlet flow stabilization algorithm is called to control flow, a preset control time sequence model is called to calculate in real time, and then the oxygen outlet time is adjusted in real time, so that the respiratory frequency and the oxygen outlet flow under the gear are very stable.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a pulse type oxygen generation control method, a pulse type oxygen generation control device, a pulse type oxygen generation controller and a storage medium.
Background
Pulsed oxygenerator is on traditional oxygenerator's basis, detect user's breathing through increasing breathing detection module, calculate respiratory frequency of this time breathing, again according to different respiratory frequency and different gear, the open time of control oxygen valve, reach the control of single output flow, thereby reach and save oxygen, improve the purpose of oxygen utilization ratio and improvement oxygen uptake comfort level, and have the oxygen suppliment effect the same with lasting oxygen suppliment, the oxygen consumption of intermittent type oxygen suppliment is only for lasting 1/6 of oxygen suppliment, this volume that has also greatly reduced the oxygenerator, weight and energy consumption, improve the portability, it generally comprises compressor part, the adsorption tower part, the switching-over part, circuit control part, breathe partial constitutions such as detection part.
In the process of implementing the invention, the applicant researches and discovers that when a user actually uses the pulse type oxygen generating device, the breathing time is not controlled by the system, so that when the breathing occurs at the low pressure of the oxygen storage part, the flow is slightly low. When respiration occurs at high pressure in the oxygen storage part, the flow rate is higher. When the breathing frequency and the gear are not changed, the single air outlet flow is also unstable, and the root cause of the problem is that the breathing time of the user is random, the deep inhalation, the shallow inhalation or the continuous inhalation of the user is also random, and the differences of the pressure of the oxygen storage component and the operation time sequence of the system can cause the unstable oxygen outlet flow under the conditions of the same breathing frequency and the same gear.
The oxygen output and the oxygen concentration of the portable oxygen generator are the inverse relationship, and the larger the oxygen output is, the better the oxygen output is. After the fixed gear is set to operate, the oxygen output amount is within a set flow range. Taking a conventional portable pulse type oxygen generating device on the market as an example, when the portable pulse type oxygen generating device is set to operate at 6 grades, the oxygen output amount is 1.2L/min. Under the oxygen flow of 1.2L/min, the product can ensure that the oxygen concentration is in the range of 90-96%. When the oxygen flow rate exceeds the range of 1.2L/min, the oxygen concentration is also lower than 90 percent. The treatment effect of the portable oxygen generator is deteriorated. When the oxygen flow rate is less than the set range of 1.2L/min, the treatment effect is also deteriorated because the flow rate is too small. The stability of the oxygen concentration is determined by the stability of the oxygen output flow, so the stability of controlling the oxygen output flow of the portable oxygen generator is very important.
Therefore, how to develop a control method and related technology capable of stably controlling the oxygen output stability of a user during each breath is a subject to be studied and solved by the present invention.
Disclosure of Invention
The invention aims to provide a pulse type oxygen generation control method, a pulse type oxygen generation control device, a pulse type oxygen generation controller and a storage medium for stably controlling the oxygen generation stability of a user during each breathing.
In order to achieve the above object, a first aspect of the present invention provides a pulse type oxygen generation control method for controlling an oxygen output flow of a pulse type oxygen generation device, the method including:
presetting a control time sequence model of the pulse type oxygen generating device, wherein the control time sequence model comprises a preset corresponding relation of oxygen outlet flow L, system standard pressure Ps and standard time sequence Ts;
starting the pulse type oxygen generating device to run, judging whether breathing is detected or not, and if so, performing the following steps;
calculating the current respiratory frequency F1 of the user, and obtaining an anchoring reference time sequence T8 corresponding to the current respiratory frequency F1 from a preset corresponding relation;
acquiring a current time sequence T0 and a current oxygen storage pressure P0, and calculating a compensation coefficient K corresponding to the current time sequence T0 and the current oxygen storage pressure P0 from a preset corresponding relation;
and obtaining a new oxygen outlet time sequence T8n under the current oxygen storage pressure P0 according to the compensation coefficient K and the anchoring reference time sequence T8, and controlling the single oxygen outlet flow Ln in real time according to the new oxygen outlet time sequence T8n.
The invention provides a pulse oxygen generator for pulse oxygen generation control in the method of the first aspect, and the innovation point is that the pulse oxygen generator comprises: an oxygen generation end, an oxygen output end and a control end; wherein
The system comprises an oxygen generation end, a pressure sensor and a controller, wherein the oxygen generation end is used for compressing and separating oxygen from air and storing the oxygen, and comprises a storage pressure sensing unit for detecting the current oxygen storage pressure P0 of an oxygen storage unit in real time;
the oxygen outlet end is used for outputting the oxygen separated by the oxygen making end to a user and comprises a respiration detection unit, an oxygen concentration sensing unit and an oxygen outlet control unit;
the control end judges whether breathing is detected or not after the pulse type oxygen generating device is started to operate, calculates the current breathing frequency F1 and obtains an anchoring reference time sequence T8 corresponding to the current breathing frequency F1, calculates a compensation coefficient K corresponding to the current time sequence T0 and the current oxygen storage pressure P0 according to the current time sequence T0 and the current oxygen storage pressure P0, obtains a new oxygen outlet time sequence T8n under the current oxygen storage pressure P0 according to the compensation coefficient K and the anchoring reference time sequence T8, and then controls the single oxygen outlet flow Ln in real time according to the new oxygen outlet time sequence T8n.
A third aspect of the invention proposes a controller comprising a memory, a processor and a control program stored on the memory and executable on the processor, the processor implementing the steps of the method according to the first aspect when executing the control program.
A fourth aspect of the invention proposes a control-readable storage medium having stored thereon a control program which, when executed by a processor, causes the processor to carry out the steps of the method according to the first aspect.
The invention is explained below:
1. through the implementation of the technical scheme, the whole portable oxygen generator control time sequence is modeled, a control time sequence model comprising the preset corresponding relation of the oxygen output flow L, the system standard pressure Ps and the standard time sequence Ts is established, the numerical value can be monitored in real time when the system runs, once the user is judged to inhale, an oxygen output flow stabilizing algorithm is called to control the flow, the preset control time sequence model is called to carry out real-time calculation, and the oxygen output time is adjusted in real time, at the moment, the respiratory frequency and the oxygen output flow under the gear are very stable, a large number of experiments show that the single error and the design value under the algorithm are not more than 10%, the algorithm is processed and calculated based on the preset control time sequence model, and the complexity of system design is reduced.
2. In a first aspect of the above technical solution, a control timing model of a preset pulse type oxygen generation device includes: establishing a first corresponding relation between a system reference pressure Ps and a cycle time sequence Tc of an oxygen generation cycle; establishing a second corresponding relation between various respiratory frequencies F and an anchoring reference time sequence T8; and establishing a third corresponding relation between the oxygen outlet flow L and the system reference pressure Ps under each gear.
3. In the first aspect of the above technical solution, comparing the current oxygen storage pressure P0 with the system reference pressure Ps, when the current oxygen storage pressure P0 is greater than the system reference pressure Ps, reducing the oxygen output time T8 by the compensation coefficient K; when the pressure P0 of the current oxygen storage unit is smaller than the system reference pressure Ps, the oxygen outlet time T8 is increased by the compensation coefficient K.
4. In the first aspect of the above technical solution, after the current respiratory frequency F1 of the user is calculated, the corresponding anchoring reference time sequence T8 is obtained by querying the second corresponding relationship between various respiratory frequencies F and the anchoring reference time sequence T8;
in the third corresponding relation between the oxygen outlet flow L and the system reference pressure Ps at each gear, the following formula is satisfied: y = C 1 *X 2 +C 2 *X+C 3 Acquiring current oxygen storage unit pressure P0 by reading the value of the storage pressure sensing unit, and substituting the current oxygen storage unit pressure P0 into the formula X to obtain the per-second oxygen output flow L1 under the current oxygen storage unit pressure P0, wherein Y is the oxygen output flow L, X is the system reference pressure Ps, and C1, C2 and C3 are constants;
calculating a reference oxygen output flow rate L2 at the anchoring reference timing T8, wherein L2= T8/1000 × L1, based on the anchoring reference timing T8 and the oxygen output flow rate L1 per second;
in a third corresponding relation between the oxygen outlet flow L at each gear and the system reference pressure Ps, each gear has a corresponding total oxygen outlet flow Lz, and the stable oxygen outlet flow L3 of each breath is calculated according to the third corresponding relation, wherein L3= Lz/F1;
calculating a compensation coefficient K, wherein K = L2/L3;
the time of the anchoring reference time sequence T8 is compensated by a compensation coefficient K, and a new oxygen evolution time sequence T8n is calibrated, wherein T8n satisfies the following relation,
5. in the first aspect of the above technical solution, the step after the pulse type oxygen generator is started is repeated to complete the stable real-time control of the oxygen output flow rate of the user during each breathing.
6. In a second aspect of the above technical solution, the respiration detection unit is a differential pressure sensor, and is configured to detect respiration data and transmit the respiration data to the controller, and is used for the controller to determine whether respiration is detected and calculate a current respiration frequency F1;
the oxygen concentration sensing unit is used for detecting the oxygen concentration MOL of the oxygen generation end and feeding back the oxygen concentration MOL to the controller, and the pressurization time of the oxygen generation end is prolonged when the controller judges that the oxygen concentration MOL is low.
7. In the above technical solution, the control terminal is configured to execute the following method steps:
the control end is preset with a control time sequence model of the pulse type oxygen generation device, and the preset control time sequence model comprises: establishing a first corresponding relation between a system reference pressure Ps and a cycle time sequence Tc of an oxygen generation cycle; establishing a second corresponding relation between various respiratory frequencies F and an anchoring reference time sequence T8; establishing a third corresponding relation between the oxygen outlet flow L and the system reference pressure Ps under each gear;
acquiring respiration data detected by a respiration detection unit to judge whether respiration is detected or not, and if so, performing the following steps;
acquiring respiratory data detected by a respiratory detection unit to calculate the current respiratory frequency F1 of the user, and obtaining a corresponding anchoring reference time sequence T8 by inquiring a second corresponding relation between various respiratory frequencies F and the anchoring reference time sequence T8;
acquiring the current oxygen storage unit pressure P0 detected by the storage pressure sensing unit, recording the corresponding current time sequence T0, and acquiring the per-second oxygen output flow L1 under the current oxygen storage unit pressure P0 in the third corresponding relation between the oxygen output flow L under each gear and the system reference pressure Ps;
calculating a reference oxygen outflow rate L2 at the anchoring reference timing T8, wherein L2= T8/1000 × L1, from the anchoring reference timing T8 and the oxygen outflow rate L1 per second;
in a third corresponding relation between the oxygen outlet flow L at each gear and the system reference pressure Ps, each gear has a corresponding total oxygen outlet flow Lz, and the stable oxygen outlet flow L3 of each breath is calculated according to the third corresponding relation, wherein L3= Lz/F1;
calculating a compensation coefficient K, wherein K = L2/L3;
the time of the anchoring reference timing T8 is compensated by a compensation coefficient K to obtain a new oxygen evolution timing T8n, wherein T8n satisfies the following relationship,
and the control end repeats the steps after the pulse type oxygen generating device is started to operate so as to complete the stable real-time control of the oxygen output flow when the user breathes each time.
8. In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, coupled between two elements, or coupled in any other manner that does not materially affect the operation of the device, unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
9. In the present invention, the terms "center", "upper", "lower", "axial", "bottom", "inner", "outer", etc. indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
10. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Due to the application of the scheme, compared with the prior art, the invention has the following advantages and effects:
the invention builds a control time sequence model of a preset corresponding relation comprising an oxygen flow L, a system standard pressure Ps and a standard time sequence Ts by modeling the whole portable oxygen generator control time sequence, monitors a numerical value in real time when the system operates, calls an oxygen flow stabilizing algorithm to control the flow once a user inhales the air, and adjusts the oxygen generation time in real time according to the calling of the preset control time sequence model and real-time calculation, wherein the breathing frequency and the oxygen generation flow under the gear are stable, a large amount of experiments show that the single error and the design value under the algorithm are not more than 10 percent, and the algorithm is processed and calculated based on the preset control time sequence model, so that the complexity of system design is reduced.
Drawings
FIG. 1 is a first table of the system reference pressure Ps and cycle timing Tc for an oxygen generation cycle in accordance with an embodiment of the present invention;
FIG. 2 is a table showing a second correspondence between various breathing frequencies F and an anchoring reference timing T8 according to an embodiment of the present invention;
FIG. 3 is a third table showing the relationship between the oxygen discharge flow L and the system reference pressure Ps at each shift;
FIG. 4 is a schematic flow chart illustrating the operation of the embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
Example one
In one embodiment of the present invention, a pulse oxygen generation control method is provided for controlling an oxygen output flow of a pulse oxygen generation device, and the method includes:
presetting a control time sequence model of a pulse type oxygen generating device, wherein the control time sequence model comprises a preset corresponding relation of oxygen output flow L, system standard pressure Ps and standard time sequence Ts;
starting the pulse type oxygen generating device to run, judging whether breathing is detected or not, and if so, performing the following steps;
calculating the current respiratory frequency F1 of the user, and obtaining an anchoring reference time sequence T8 corresponding to the current respiratory frequency F1 from a preset corresponding relation;
acquiring a current time sequence T0 and a current oxygen storage pressure P0, and calculating a compensation coefficient K corresponding to the current time sequence T0 and the current oxygen storage pressure P0 from a preset corresponding relation;
and obtaining a new oxygen outlet time sequence T8n under the current oxygen storage pressure P0 according to the compensation coefficient K and the anchoring reference time sequence T8, and controlling the single oxygen outlet flow Ln in real time according to the new oxygen outlet time sequence T8n.
In the first embodiment, the control timing model of the preset pulse type oxygen generating device includes: establishing a first corresponding relation between a system reference pressure Ps and a cycle time sequence Tc of an oxygen generation cycle; establishing a second corresponding relation between various respiratory frequencies F and an anchoring reference time sequence T8; and establishing a third corresponding relation between the oxygen outlet flow L and the system reference pressure Ps under each gear.
Taking one of the portable pulse type oxygenerators as an example, the pulse type oxygenerator system comprises 5 electromagnetic valves and 1 compressor. Wherein 2 distribution solenoid valves are named as main valve SV1 and main valve SV2, the nitrogen blowback solenoid valve (large aperture) is a pressure equalizing valve SV4, the nitrogen blowback solenoid valve (small aperture) is a blowback valve SV5, the oxygen outlet valve is an oxygen outlet valve SV3 (namely an oxygen outlet control unit), and the whole oxygen generation period circulates from the beginning to the end to the next oxygen generator period, so that the control model of the portable oxygen generator can be established according to the time sequence. One oxygen generation cycle consists of time slices T1, T2, T3, T4. Wherein SV1, SV2, SV4 and SV5 are adjusted and changed according to the change of time sequence, and a control model of time sequences T1-T4 and solenoid valves SV1/SV2/SV4/SV5 is established, as shown in the following.
A great deal of experiments in the development process of portable pulse type oxygen generator products find that the pressure of an oxygen tank and the time sequence from T1 to T4 have a corresponding relation. During the time sequence T1, the pressure of the oxygen tank gradually rises from low to high, the pressure of the oxygen tank rapidly falls to the lowest during the time sequence T2, the pressure of the oxygen tank gradually rises from low to high during the time sequence T3, and the pressure of the oxygen tank rapidly falls to the lowest during the time sequence T4.
The oxygen flux is equal to the flow rate x the pipe internal diameter x pi ÷ 4, while the pressure is almost proportional to the flow rate, so it can be concluded that: after the size of the gas path outlet is fixed, the pressure of the oxygen tank is in direct proportion to the oxygen outlet flow, and the larger the pressure is, the larger the flow is. The oxygen output and the oxygen concentration of the portable oxygen generator are the inverse relationship, and the larger the oxygen output is, the better the oxygen output is. After the operation of setting a fixed gear, the oxygen output amount is within a set flow range. Taking the portable oxygen generator as an example herein, when the operation is set to 6 steps, the oxygen output should be 1.2L/min. Under the oxygen flow of 1.2L/min, the product can ensure that the oxygen concentration is in the range of 90-96%. When the oxygen flow rate exceeds the range of 1.2L/min, the oxygen concentration is also lower than 90 percent. The treatment effect of the portable oxygen generator is deteriorated. When the oxygen flow rate is less than the set range of 1.2L/min, the treatment effect is also deteriorated because the flow rate is slightly small. Therefore, the stability of controlling the oxygen output flow of the portable oxygen generator is very important. A first correspondence between system reference pressure Ps and cycle time Tc for an oxygen production cycle is experimentally obtained as shown in FIG. 1. The pressure change and the time sequence of the oxygen tank can obviously show periodic change. Therefore, the oxygen output stability of each time can be controlled in real time according to the pressure of the oxygen tank and the change of the time sequence.
In the first correspondence table of the system reference pressure Ps and the cycle timing Tc of the oxygen generation cycle shown in fig. 1, the abscissa is the cycle timing Tc in seconds; the ordinate is the system reference pressure Ps in KPa.
When the user actually uses the device, the breathing time is not controlled by the system, so when the breathing occurs at the low pressure of the oxygen tank, the flow is slightly low without a control algorithm. When breathing occurs at high pressure in the oxygen tank, a situation of high flow rate may occur without a control algorithm. A second correspondence of the various breathing frequencies F to the anchoring reference timing T8 is established here, this model being stored in the internal FLASH of the system, as shown in fig. 2.
In the second table of correspondence between the various breathing frequencies F and the anchoring reference timing T8 shown in fig. 2, T7 is the time at which the oxygen evolution control unit is turned off, and is expressed in units of s. T8 is the time of opening the oxygen outlet control unit and is in the unit of s. The frequency of spraying and discharging is the respiratory frequency, and is the number of breaths per minute, and the single period is the total time of one expiration and inspiration, and the unit is s.
Moreover, because of different oxygen inhalation situations of applicable people and users, the conventional pulse type oxygen generator can be set to have different oxygen output flow rates L and total oxygen output flow rates Lz, and a third corresponding relation between the oxygen output flow rate L and the system reference pressure Ps at each gear is also established in the invention, wherein one model is shown in figure 3.
In a third corresponding relation table of the oxygen outlet flow L and the system reference pressure Ps at each gear shown in fig. 3, the ordinate is the oxygen outlet flow L in ml/s; the abscissa is the system reference pressure Ps, and the unit is KPa; and satisfies the following formula: y = C 1 *X 2 +C 2 *X+C 3 Wherein Y is the oxygen flow L, X is the system reference pressure Ps, and C1, C2 and C3 are constants.
Therefore, in one preferred embodiment of the present invention, reference is made to the following:
s100: under a certain gear, the system obtains the current respiratory frequency F1 of the user through calculation, and according to the gear and the current respiratory frequency F1 of the user, a model table of a second corresponding relation between various respiratory frequencies F and an anchoring reference time sequence T8 is inquired, so that specific reference values of T7 and T8 can be obtained;
s200: acquiring the current pressure P0 of the oxygen gas storage unit by reading the value of the gas storage pressure sensing unit; a formula Y = C passing through a third corresponding relation between the oxygen flow L and the system reference pressure Ps at each gear 1 *X 2 +C 2 *X+C 3 The oxygen flow per second L1 under the pressure P0 of the current oxygen storage unit can be obtained;
s300: calculating a reference oxygen output flow rate L2 at the anchoring reference timing T8, wherein L2= T8/1000 × L1, based on the anchoring reference timing T8 and the oxygen output flow rate L1 per second;
s400: according to the breathing frequency and the gears, in a third corresponding relation between the oxygen outlet flow L and the system reference pressure Ps in each gear, each gear has a corresponding total oxygen outlet flow Lz, and the stable oxygen outlet flow L3 of each breathing is calculated according to the third corresponding relation, wherein L3= Lz/F1; (ii) a
S500: calculating a compensation coefficient K, wherein K = L2/L3; (ii) a
S600: the time of the anchoring reference time sequence T8 is compensated by a compensation coefficient K, and a new oxygen evolution time sequence T8n is calibrated, wherein T8n satisfies the following relation,
and repeating the steps from S100 to S600 to complete the stable real-time control of the oxygen outlet flow of the user during each breathing.
In step S300 of the above method steps, in the third correspondence relationship between the oxygen outflow rate L and the system reference pressure Ps at each gear, the following formula is satisfied: y = C 1 *X 2 +C 2 *X+C 3 Wherein Y is the oxygen flow L and X is the system reference pressure Ps, C 1 、C 2 、C 3 Is a constant.
The system can better realize the stable control of the single oxygen outlet flow according to the autonomously designed control algorithm, the pressure of the oxygen tank, the time sequence and the respiratory frequency. And comparing the current oxygen storage pressure P0 with the system reference pressure Ps, and when the current oxygen storage pressure P0 is greater than the system reference pressure Ps, reducing the oxygen output time T8 by the compensation coefficient K, so that the flow can be controlled within a set range. When the pressure P0 of the current oxygen storage unit is smaller than the system reference pressure Ps, the oxygen output time T8 is increased through the compensation coefficient K, so that the flow can be controlled within a set range.
Example two
The embodiment two of the invention discloses a pulse type oxygen generating device, which comprises: an oxygen generation end, an oxygen output end and a control end; wherein, the first and the second end of the pipe are connected with each other,
the oxygen generation end is used for compressing and separating oxygen from air and storing the oxygen, and comprises a gas storage pressure sensing unit for detecting the current oxygen storage pressure P0 of the oxygen storage unit in real time;
the oxygen outlet end is used for outputting the oxygen separated by the oxygen making end to a user and comprises a respiration detection unit, an oxygen concentration sensing unit and an oxygen outlet control unit;
the control end judges whether breathing is detected or not after the pulse type oxygen generating device is started to operate, calculates the current breathing frequency F1 and obtains an anchoring reference time sequence T8 corresponding to the current breathing frequency F1, calculates a compensation coefficient K corresponding to the current time sequence T0 and the current oxygen storage pressure P0 according to the current time sequence T0 and the current oxygen storage pressure P0, obtains a new oxygen outlet time sequence T8n under the current oxygen storage pressure P0 according to the compensation coefficient K and the anchoring reference time sequence T8, and then controls the single oxygen outlet flow Ln in real time according to the new oxygen outlet time sequence T8n.
In the second embodiment of the present invention, the respiration detection unit in the oxygen outlet is a differential pressure sensor, and is configured to detect respiration data and transmit the respiration data to the controller, and the controller is configured to determine whether respiration is detected or not and calculate the current respiration frequency F1; the oxygen concentration sensing unit in the oxygen outlet end is used for detecting the oxygen concentration MOL of the oxygen outlet end and feeding back the oxygen concentration MOL to the controller, and the pressurizing time of the oxygen generating end is prolonged when the controller judges that the oxygen concentration MOL is lower.
The control terminal of the pulse type oxygen generating device of the second embodiment of the invention is configured to execute the following method steps:
the control end is preset with a control time sequence model of the pulse type oxygen generating device, and the preset control time sequence model comprises: establishing a first corresponding relation between system reference pressure Ps and a cycle time sequence Tc of an oxygen generation cycle; establishing a second corresponding relation between various respiratory frequencies F and an anchoring reference time sequence T8; establishing a third corresponding relation between the oxygen outlet flow L and the system reference pressure Ps under each gear;
acquiring respiration data detected by a respiration detection unit to judge whether respiration is detected or not, and if so, performing the following steps;
acquiring respiratory data detected by a respiratory detection unit to calculate the current respiratory frequency F1 of the user, and obtaining a corresponding anchoring reference time sequence T8 by inquiring a second corresponding relation between various respiratory frequencies F and the anchoring reference time sequence T8;
acquiring the current pressure P0 of the oxygen gas storage unit detected by the gas storage pressure sensing unit, recording the corresponding current time sequence T0, and acquiring the per-second oxygen output flow L1 under the current pressure P0 of the oxygen gas storage unit in a third corresponding relation between the oxygen output flow L under each gear and the system reference pressure Ps;
calculating a reference oxygen outflow rate L2 at the anchoring reference timing T8, wherein L2= T8/1000 × L1, from the anchoring reference timing T8 and the oxygen outflow rate L1 per second;
in a third corresponding relation between the oxygen outlet flow L at each gear and the system reference pressure Ps, each gear has a corresponding total oxygen outlet flow Lz, and the stable oxygen outlet flow L3 of each breath is calculated according to the third corresponding relation, wherein L3= Lz/F1;
calculating a compensation coefficient K, wherein K = L2/L3;
the time of the anchoring reference timing T8 is compensated by a compensation coefficient K to obtain a new oxygen evolution timing T8n, wherein T8n satisfies the following relationship,
and the control end repeats the steps after the pulse type oxygen generating device is started to operate so as to complete the stable real-time control of the oxygen output flow when the user breathes each time.
EXAMPLE III
The third embodiment of the invention discloses a controller, which comprises a memory, a processor and a control program which is stored on the memory and can be operated on the processor, wherein the steps of the method of the first embodiment are realized when the processor executes the control program.
Example four
The fourth embodiment of the present invention further discloses a control readable storage medium, wherein a control program is stored on the control readable storage medium, and when the control program is executed by a processor, the processor is enabled to execute the steps of the method according to the first embodiment.
In the embodiments of the present invention, as shown in fig. 4, the pulse oxygen generation control method in the embodiments of the present invention can refer to the following flow:
1. starting a pulse type oxygen generating device;
2. reading a model of a first corresponding relation between the stored system reference pressure Ps of the oxygen generation period and the period time sequence Tc;
3. reading the stored models of the second corresponding relation between various respiratory frequencies F and the anchoring reference time sequence T8;
4. reading a model of a third corresponding relation between the oxygen outlet flow L and the system reference pressure Ps under each gear;
5. judging whether breathing is detected or not, and if so, carrying out the next step;
6. calculating the current respiratory frequency F1;
7. recording the current time sequence T0;
8. reading the current oxygen storage pressure P0;
9. inquiring a data table according to the current oxygen storage pressure P0 and the current time sequence T0 to obtain a compensation coefficient K of the current oxygen storage pressure P0 and the current time sequence T0;
10. inquiring a data table according to the current respiratory frequency F1 to obtain an anchoring reference time sequence T8;
11. and obtaining a new oxygen outlet time sequence T8n under the current pressure according to the compensation coefficient K and the anchoring reference time sequence T8.
In each embodiment of the invention, a control time sequence model comprising a preset corresponding relation of an oxygen outlet flow L, a system standard pressure Ps and a standard time sequence Ts is established by modeling the control time sequence of the whole portable oxygen generator, the numerical value can be monitored in real time when the system runs, once the user inhales the air, an oxygen outlet flow stabilizing algorithm is called to control the flow, the oxygen outlet time is adjusted in real time according to calling the preset control time sequence model, the breathing frequency and the oxygen outlet flow under the gear are stable, a large number of experiments show that the single error and the design value under the algorithm are not more than 10%, and the algorithm is processed and calculated based on the preset control time sequence model, so that the complexity of system design is reduced.
The practical application of the pulse oxygen generation method and the oxygen generation device of the embodiment of the invention is exemplified as follows:
taking the example that the user selects 6 gears when using the pulse type oxygen generator, the total flow of the 6 gears is 1200ml, and at this time, the formula Y = C of the third corresponding relation between the oxygen outlet flow L and the system reference pressure Ps at each gear 1 *X 2 +C 2 *X+C 3 Middle, constant C 1 、C 2 、C 3 Respectively selecting-0.004, 1.7056 and-41.23, and calculating the current respiratory frequency F1 of the user by the control end according to the data of the respiratory detection unit for 30 times;
the control end records that the current time sequence T0 is 50s according to the fact that the current oxygen gas storage pressure P0 measured by the gas storage pressure sensing unit is 150; i.e., X =150, the oxygen output flow per second L1 is found by table lookup:
L1＝Y＝-0.004X 2 +1.7056X-41.23＝-90+255.84-41.23＝124.61；
when the breathing frequency is 30 times, the anchor reference timing T8=0.16 is found by table lookup,
L2＝T8/1000*L1＝0.16/1000*124.61＝0.0199376；
total flow Lz at corresponding 6 th gear was 1200ml, l3= Lz/F1=1200/30=40;
calculating a compensation coefficient K, K = L2/L3=0.0199376/40=0.00049844;
compensating the time of the anchoring reference time sequence T8 by a compensation coefficient K, calibrating a new oxygen outlet time sequence T8n, recording the current time sequence as T0 as 50s, looking up a table 1, wherein the system reference pressure Ps is 165 and P0 is P0 under the current time sequence as T0<Ps in the following formula
The first bar is satisfied, therefore T8n = (1+K) T8= (1 + 0.00049844) × 0.16=0.1600797504s;
the control end controls the opening time of the oxygen output control unit at this time according to the T8 n;
and the control end repeats the steps after the pulse type oxygen generating device is started to operate so as to complete the stable real-time control of the oxygen output flow when the user breathes each time.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A pulse type oxygen generation control method is used for controlling the oxygen output flow of a pulse type oxygen generation device, and is characterized by comprising the following steps:
presetting a control time sequence model of the pulse type oxygen generating device, wherein the control time sequence model comprises a preset corresponding relation of oxygen outlet flow L, system standard pressure Ps and standard time sequence Ts;
starting the pulse type oxygen generating device to run, judging whether breathing is detected or not, and if so, performing the following steps;
calculating the current respiratory frequency F1 of the user, and obtaining an anchoring reference time sequence T8 corresponding to the current respiratory frequency F1 from a preset corresponding relation;
acquiring a current time sequence T0 and a current oxygen storage pressure P0, and calculating a compensation coefficient K corresponding to the current time sequence T0 and the current oxygen storage pressure P0 from a preset corresponding relation;
and calibrating a new oxygen outlet time sequence T8n under the current oxygen storage pressure P0 according to the compensation coefficient K and the anchoring reference time sequence T8, and controlling the single oxygen outlet flow Ln in real time according to the new oxygen outlet time sequence T8n.
2. The pulse oxygen generation control method according to claim 1, wherein presetting the control timing model of the pulse oxygen generation device includes: establishing a first corresponding relation between a system reference pressure Ps and a cycle time sequence Tc of an oxygen generation cycle; establishing a second corresponding relation between various respiratory frequencies F and an anchoring reference time sequence T8; and establishing a third corresponding relation between the oxygen outlet flow L and the system reference pressure Ps at each gear.
3. The pulse oxygen generation control method according to claim 2, characterized in that: comparing the current oxygen storage pressure P0 with the system reference pressure Ps, and reducing the oxygen output time T8 by the compensation coefficient K when the current oxygen storage pressure P0 is greater than the system reference pressure Ps; when the pressure P0 of the current oxygen storage unit is smaller than the system reference pressure Ps, the oxygen outlet time T8 is increased by the compensation coefficient K.
4. A pulsed oxygen generation control method according to claim 2, wherein in the method:
after the current respiratory frequency F1 of the user is calculated, acquiring a corresponding anchoring reference time sequence T8 by inquiring a second corresponding relation between various respiratory frequencies F and the anchoring reference time sequence T8;
in the third corresponding relation between the oxygen outlet flow L and the system reference pressure Ps at each gear, the following formula is satisfied: y = C 1 *X 2 +C 2 *X+C 3 Acquiring current oxygen storage unit pressure P0 by reading the value of the storage pressure sensing unit, and substituting the current oxygen storage unit pressure P0 into the formula X to obtain the per-second oxygen output flow L1 under the current oxygen storage unit pressure P0, wherein Y is the oxygen output flow L, X is the system reference pressure Ps, and C1, C2 and C3 are constants;
calculating a reference oxygen outflow rate L2 at the anchoring reference timing T8, wherein L2= T8/1000 × L1, from the anchoring reference timing T8 and the oxygen outflow rate L1 per second;
in a third corresponding relation between the oxygen outlet flow L at each gear and the system reference pressure Ps, each gear has a corresponding total oxygen outlet flow Lz, and the stable oxygen outlet flow L3 of each breath is calculated according to the third corresponding relation, wherein L3= Lz/F1;
calculating a compensation coefficient K, wherein K = L2/L3;
the time of the anchoring reference time sequence T8 is compensated by a compensation coefficient K, and a new oxygen evolution time sequence T8n is calibrated, wherein T8n satisfies the following relation,
5. the pulse oxygen generation control method according to claim 1, characterized in that: and repeating the steps after the pulse type oxygen generating device is started to complete the stable real-time control of the oxygen output flow when the user breathes each time.
6. A pulse oxygen generator for pulse oxygen generation control in the method of any one of claims 1 to 5, comprising: an oxygen generation end, an oxygen output end and a control end; wherein
The system comprises an oxygen generation end, a pressure sensor and a controller, wherein the oxygen generation end is used for compressing and separating oxygen from air and storing the oxygen, and comprises a storage pressure sensing unit for detecting the current oxygen storage pressure P0 of an oxygen storage unit in real time;
the oxygen outlet end is used for outputting the oxygen separated by the oxygen making end to a user and comprises a respiration detection unit, an oxygen concentration sensing unit and an oxygen outlet control unit;
the control end judges whether breathing is detected or not after the pulse type oxygen generating device is started to operate, calculates the current breathing frequency F1 and obtains an anchoring reference time sequence T8 corresponding to the current breathing frequency F1, calculates a compensation coefficient K corresponding to the current time sequence T0 and the current oxygen storage pressure P0 according to the current time sequence T0 and the current oxygen storage pressure P0, obtains a new oxygen outlet time sequence T8n under the current oxygen storage pressure P0 according to the compensation coefficient K and the anchoring reference time sequence T8, and then controls the single oxygen outlet flow Ln in real time according to the new oxygen outlet time sequence T8n.
7. A pulsed oxygen generator according to claim 6, characterized in that:
the respiration detection unit is a differential pressure sensor and is used for detecting respiration data, transmitting the respiration data to the controller, judging whether respiration is detected by the controller and calculating the current respiration frequency F1;
the oxygen concentration sensing unit is used for detecting the oxygen concentration MOL of the oxygen generation end and feeding back the oxygen concentration MOL to the controller, and the pressurization time of the oxygen generation end is prolonged when the controller judges that the oxygen concentration MOL is low.
8. The pulsed oxygen generator of claim 6, wherein the control terminal is configured to perform the following method steps:
the control end is preset with a control time sequence model of the pulse type oxygen generating device, and the preset control time sequence model comprises: establishing a first corresponding relation between a system reference pressure Ps and a cycle time sequence Tc of an oxygen generation cycle; establishing a second corresponding relation between various respiratory frequencies F and an anchoring reference time sequence T8; establishing a third corresponding relation between the oxygen outlet flow L and the system reference pressure Ps under each gear;
acquiring respiration data detected by a respiration detection unit to judge whether respiration is detected or not, and if so, performing the following steps;
acquiring respiratory data detected by a respiratory detection unit to calculate the current respiratory frequency F1 of the user, and obtaining a corresponding anchoring reference time sequence T8 by inquiring a second corresponding relation between various respiratory frequencies F and the anchoring reference time sequence T8;
acquiring the current pressure P0 of the oxygen gas storage unit detected by the gas storage pressure sensing unit, recording the corresponding current time sequence T0, and acquiring the per-second oxygen output flow L1 under the current pressure P0 of the oxygen gas storage unit in a third corresponding relation between the oxygen output flow L under each gear and the system reference pressure Ps;
calculating a reference oxygen output flow rate L2 at the anchoring reference timing T8, wherein L2= T8/1000 × L1, based on the anchoring reference timing T8 and the oxygen output flow rate L1 per second;
in a third corresponding relation between the oxygen outlet flow L at each gear and the system reference pressure Ps, each gear has a corresponding total oxygen outlet flow Lz, and the stable oxygen outlet flow L3 of each breath is calculated according to the third corresponding relation, wherein L3= Lz/F1;
calculating a compensation coefficient K, wherein K = L2/L3;
the time of the anchoring reference timing T8 is compensated by a compensation coefficient K to obtain a new oxygen evolution timing T8n, wherein T8n satisfies the following relationship,
and the control end repeats the steps after the pulse type oxygen generating device is started to operate so as to complete the stable real-time control of the oxygen output flow when the user breathes each time.
9. A controller, characterized by: the controller comprises a memory, a processor and a control program stored on the memory and executable on the processor, the processor implementing the steps of the method of any one of claims 1 to 5 when executing the control program.
10. A control readable storage medium, characterized by: the control readable storage medium has stored thereon a control program which, when executed by a processor, causes the processor to carry out the steps of the method according to any one of claims 1 to 5.
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