CN111686352B

CN111686352B - Fluid supply method and fluid supply device

Info

Publication number: CN111686352B
Application number: CN201910198463.6A
Authority: CN
Inventors: 刘涛; 王美平
Original assignee: Omron Healthcare Co Ltd
Current assignee: Omron Healthcare Co Ltd
Priority date: 2019-03-15
Filing date: 2019-03-15
Publication date: 2023-07-14
Anticipated expiration: 2039-03-15
Also published as: CN111686352A; WO2020189152A1

Abstract

The embodiment of the invention provides a fluid providing method and a fluid providing device. The method comprises the following steps: measuring a current atmospheric pressure outside the fluid providing apparatus in real time a plurality of times by a pressure sensor in the fluid providing apparatus, and measuring a passage pressure in a fluid delivery passage of the fluid providing apparatus by the pressure sensor; judging whether a user is in an air suction state according to a passage pressure value and an atmospheric pressure standard value in the fluid conveying passage; correcting the atmospheric pressure standard value according to the atmospheric pressure value obtained by multiple measurements; and controlling opening and closing of the fluid delivery passage based on the passage pressure value and the corrected atmospheric pressure standard value. By the embodiment of the invention, misjudgment on the respiratory state caused by atmospheric pressure change can be reduced or avoided, and the accuracy of respiratory detection is improved.

Description

Fluid supply method and fluid supply device

Technical Field

The present disclosure relates to the field of fluid supply, and in particular, to a fluid supply method and a fluid supply device.

Background

In the past, particularly in the medical field, fluid supply devices (or so-called fluid supply apparatuses) are used in large numbers, which are used to generate a prescribed type of fluid and supply the fluid to a user for inhalation by the user. Such fluid supply devices include, for example, oxygenerators, atomizers, and the like.

In the existing fluid supply apparatus, it is necessary to measure the atmospheric pressure outside the fluid supply apparatus, and use the measured atmospheric pressure value as a standard air pressure in a breath detection (or referred to as breath detection) algorithm for detecting the breathing state of the user, so as to realize the breath detection function.

It should be noted that the foregoing description of the background art is only for the purpose of providing a clear and complete description of the technical solution of the present invention and is presented for the convenience of understanding by those skilled in the art. The above-described solutions are not considered to be known to the person skilled in the art simply because they are set forth in the background of the invention section.

Disclosure of Invention

The inventor found that, in the conventional fluid supply apparatus, the atmospheric pressure is measured at one time when the apparatus is started, and the atmospheric pressure value is used as a standard air pressure value of a breath detection algorithm; however, the atmospheric pressure outside the fluid supply device always varies, and when the atmospheric pressure varies greatly, the breath detection algorithm is affected, and thus misjudgment of the breathing state may occur.

In order to solve the above problems, embodiments of the present invention provide a fluid providing method and a fluid providing apparatus, which can correct an atmospheric pressure standard value for breath detection according to an atmospheric pressure outside the fluid providing apparatus measured in real time, so as to reduce or avoid erroneous judgment of a breath state due to atmospheric pressure change, and improve accuracy of breath detection.

According to a first aspect of an embodiment of the present invention, there is provided a fluid supply method, the method comprising: measuring a current atmospheric pressure outside the fluid providing apparatus in real time a plurality of times by a pressure sensor in the fluid providing apparatus, and measuring a passage pressure in a fluid delivery passage of the fluid providing apparatus by the pressure sensor; judging whether a user is in an air suction state according to a passage pressure value and an atmospheric pressure standard value in the fluid conveying passage; correcting the atmospheric pressure standard value according to the atmospheric pressure value obtained by multiple measurements; and controlling opening and closing (ON/OFF) of the fluid delivery passage based ON the passage pressure value and the corrected atmospheric pressure standard value.

According to a second aspect of embodiments of the present invention, there is provided a fluid supply apparatus, the apparatus comprising: a pressure sensor for measuring a current atmospheric pressure outside the fluid supply device in real time a plurality of times, and for measuring a passage pressure within a fluid delivery passage of the fluid supply device; a determination unit for determining whether or not the user is in an inhalation state based on the passage pressure value and the atmospheric pressure standard value in the fluid transport passage; a correction unit for correcting the atmospheric pressure standard value on the basis of the atmospheric pressure values obtained by the plurality of measurements; and a control unit for controlling the opening and closing of the fluid delivery passage based on the passage pressure value inside the fluid supply device and the corrected atmospheric pressure standard value.

The embodiment of the invention has the beneficial effects that the atmospheric pressure standard value for breath detection is corrected by measuring the atmospheric pressure outside the fluid supply device in real time, so that misjudgment on the breath state caused by atmospheric pressure change can be reduced or avoided, and the accuracy rate of breath detection is improved.

Specific embodiments of the invention are disclosed in detail below 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 limited in scope thereby. 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 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 evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. In the drawings:

FIG. 1 is a schematic illustration of a fluid supply method according to an embodiment of the present invention;

FIG. 2 is a schematic illustration of the measurement of current barometric pressure and passage pressure using the same pressure sensor in accordance with an embodiment of the invention;

FIG. 3 is another schematic illustration of the measurement of current barometric pressure and passage pressure using the same pressure sensor in an embodiment of the invention;

FIG. 4 is a timing diagram of the measurement of current barometric pressure and channel pressure using the same pressure sensor in an embodiment of the invention;

FIG. 5 is a flow chart of a fluid providing method of an embodiment of the present invention;

FIG. 6 is another flow chart of a fluid providing method of an embodiment of the present invention;

fig. 7 is a schematic view of a fluid providing apparatus according to an embodiment of the present 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 specification and drawings, there have been specifically disclosed specific embodiments of the invention that are indicative of some of the ways in which the principles of the invention may be employed, it being understood that the invention is not limited to the specific embodiments described, but, on the contrary, the invention includes 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 to distinguish between different elements from each other by name, but do not indicate spatial arrangement or time sequence 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 present invention, the singular forms "a," an, "and" the "include plural referents and should be construed broadly to mean" one "or" one type "and not limited to" one "or" another; furthermore, the term "comprising" is to be interpreted as including both the singular and the plural, unless the context clearly dictates otherwise. Furthermore, the term "in accordance with" should be understood to be "at least partially in accordance with," and the term "based on" should be understood to be "at least partially in accordance with," unless the context clearly indicates otherwise.

Various implementations of embodiments of the present invention are described below with reference to the accompanying drawings. These implementations are merely illustrative and not limiting of the embodiments of the present invention. In the following embodiments, ON (ON) may also be referred to as ON, start, ON, etc., and OFF (OFF) may also be referred to as OFF, etc.; the following is no longer distinguished without causing confusion.

Example 1

The present embodiment 1 provides a fluid supply method. The method may be used to generate a specified type of fluid and provide the fluid to a user's fluid providing device, which may be, for example, an oxygenerator, an atomizer, or the like. The fluid supplied from the fluid supply device may be various gases such as oxygen, or may be a gas and/or a liquid for atomization. The present embodiment is not limited thereto, and the specific type of the fluid supply apparatus to be used may be selected according to actual needs.

Fig. 1 is a schematic diagram of a fluid supply method of the present embodiment. As shown in fig. 1, the method includes:

step 101, measuring the current atmospheric pressure outside the fluid providing device in real time by a pressure sensor in the fluid providing device for a plurality of times, and measuring the channel pressure in a fluid conveying channel of the fluid providing device by the pressure sensor;

102, judging whether a user is in an air suction state according to the measured passage pressure value and the atmospheric pressure standard value in the fluid conveying passage;

step 103, correcting the atmospheric pressure standard value according to the atmospheric pressure value obtained by multiple times of measurement; and

and 104, controlling the opening and closing of the fluid conveying passage according to the passage pressure value and the corrected atmospheric pressure standard value.

In the above-described method of the present embodiment, by measuring the atmospheric pressure a plurality of times in real time and correcting the atmospheric pressure standard value for breath detection, the current atmospheric pressure value outside the fluid supply device can be used as a basis for detecting (detecting) the breathing state of the user, whereby erroneous judgment of the breathing state due to the atmospheric pressure change can be reduced or avoided, and the accuracy of breath detection can be improved.

In step 102, the breathing state of the user is determined from the measured values of the passage pressure and the standard atmospheric pressure. For example, when the gradient of the passage pressure value in the fluid supply device is set as the pressure change degree, and the pressure change degree is smaller than a first threshold value set in advance and the passage pressure value is smaller than the standard atmospheric pressure, it is determined that the user is in the inhalation state; the first threshold value may be set based on a statistical value of the degree of change in the air pressure when the user inhales with the inhalation intensity being equal to or greater than a predetermined level. The above-described determination method is merely an example, and the present embodiment is not limited to this determination method, and may refer to the prior art.

In the present embodiment, the atmospheric pressure standard value used for judging the breathing state of the user may be, for example, a basic standard value stored in the fluid supply device in advance, or may be an atmospheric pressure value obtained by the previous measurement, or an average value of the atmospheric pressure values obtained by the previous measurements.

In the present embodiment, the atmospheric pressure value measured from step 101 may be used to correct the atmospheric pressure standard value for breath detection in step 103, the passage pressure value in the fluid delivery passage measured from step 101 may be used to determine the breathing state of the user, and the measurement of the atmospheric pressure and the measurement of the passage pressure in step 101 are performed in different time periods, and the order of measurement is not limited in the present embodiment.

In the present embodiment, the fluid supply device has the fluid delivery passage and the atmospheric pressure measurement passage inside, and when the fluid delivery passage is opened, the fluid can be supplied to the user, and in addition, the passage pressure inside the fluid delivery passage can be measured by the pressure detection means such as the pressure sensor in the fluid supply device; the same pressure sensor in the fluid supply device may be used to measure the current atmospheric pressure outside the fluid supply device when the atmospheric pressure measurement passageway is open.

However, the present embodiment is not limited thereto, and for example, two pressure sensors may be provided in the fluid supply device, one for measuring the passage pressure and the other for measuring the current atmospheric pressure.

Compared with the two pressure sensors, the same pressure sensor has the advantages of no need of changing hardware design, no need of increasing cost, no measurement error among different sensors, and the like.

In the present embodiment, for example, the fluid supply device has a breather valve and a correction valve therein, and when the breather valve is closed and the correction valve is open, the atmospheric pressure measurement passage is opened and the fluid delivery passage is closed; when the breather valve is open and the correction valve is closed, the atmospheric pressure measurement passage is closed and the fluid delivery passage is opened. The present embodiment is not limited as to the specific structures of the respiratory valve and the correction valve; for example, the calibration valve may be a 2-position 3-way valve.

Thus, by means of the pressure sensor in the fluid supply device, the current atmospheric pressure and the passage pressure can be measured respectively in different time periods. The same pressure sensor is used for respectively measuring the pressure of the passage and the current atmospheric pressure in different time periods, so that the cost can be further reduced, and the measurement accuracy can be improved.

Fig. 2 and 3 are schematic diagrams of measuring the current atmospheric pressure and the channel pressure by using the same pressure sensor according to an embodiment of the present invention, and illustrate the case of the pressure sensor 201, the breather valve 202, the correction valve 203, and the like. The breather valve 202 may be an on-off solenoid valve, the correction valve 203 may be a 2-position 3-way solenoid valve, the controller 205 may be implemented by a printed circuit board (PCB, printed Circuit Board), for example, and the fluid generator 204 may refer to the related art.

It should be noted that the calibration valves "close" and "open" in this embodiment are specific to the atmospheric pressure measurement channel, and the specific valve action is not particularly limited. Further, "passage pressure" in the present embodiment means the pressure in the fluid delivery passage when the atmospheric pressure measurement passage is closed; while the atmospheric pressure measurement passage is open, the pressure sensor 201 still measures the pressure in the fluid delivery passage, but at this time "the pressure in the fluid delivery passage" is equivalent to the atmospheric pressure, and this embodiment is referred to as measuring the atmospheric pressure for convenience of explanation.

Fig. 2 shows a case where the atmospheric pressure measurement passage is opened, as shown in fig. 2, and when the breather valve 202 is closed and the correction valve 203 is opened, as shown by a broken line in fig. 2, the pressure sensor 201 can communicate with the atmosphere, thereby measuring the atmospheric pressure in real time; at this time, the fluid delivery passage is closed.

Fig. 3 shows a case where the fluid delivery passage is opened, as shown in fig. 3, when the breather valve 202 is opened and the correction valve 203 is closed, as shown by a broken line in fig. 3, the fluid generated by the fluid generator 204 may be supplied to the user, and the pressure sensor 201 may measure the pressure in the passage; the atmospheric pressure measurement passage is closed at this time.

It is noted that fig. 2 and 3 above are only illustrative of embodiments of the invention, wherein only parts directly related to the present application are schematically shown, but the invention is not limited thereto. For example, the connection relation of the respective components may be appropriately adjusted, and other components may be added or some of the components may be reduced. Those skilled in the art can make appropriate modifications in light of the above, and are not limited to the descriptions of fig. 2 and 3 described above.

In this embodiment, the passage pressure within the fluid delivery passage may be measured for breath detection by the user. For example, the user's breath may be detected (i.e., a determination of whether a user's breathing waveform is present) based on the measured path pressure value. In this embodiment, a breathing waveform indicates, for example, the channel pressure distribution corresponding to the user completing a complete inhalation and exhalation process.

For example, when the passage pressure value changes regularly, it can be determined that there is a breathing waveform of the user, and in addition, a waveform diagram of the breathing of the user can be obtained according to the measured passage pressure value; and the user can be judged to be in an inhalation state or an exhalation state according to the measured passage pressure value and/or the atmospheric pressure standard value. For details of breath detection, reference may also be made to the related art.

In this embodiment, by breath detection, the respective operations of the fluid transfer, the measurement passage pressure, and the measurement of the atmospheric pressure can be controlled more accurately. Thus, fluid can be supplied according to the breathing condition of the user, and the efficiency of fluid transportation can be improved.

The following describes respective operations of delivering a fluid, measuring a passage pressure, and measuring an atmospheric pressure in conjunction with a respiration detection method. It is noted that fig. 4 illustrates only one implementation of the embodiment of the present invention, specifically, an implementation of measuring the atmospheric pressure in real time and correcting the original atmospheric pressure value at a prescribed period, but the present invention is not limited thereto.

FIG. 4 is a timing diagram of the measurement of the current barometric pressure and the via pressure using the same pressure sensor in an embodiment of the invention. As shown in fig. 4, assuming that the breather valve and the correction valve are both closed, the pressure in the passage does not change, and is a straight line shown in the upper left of fig. 4. When the user starts inhaling, as shown at a in fig. 4, the pressure in the fluid delivery path will decrease, and the corresponding air pressure waveform will be in a decreasing state; after the pressure drops to a certain threshold (time T1), the controller can determine that the user is in an inhalation state by a breath detection algorithm, and can open the breather valve. The fluid is then supplied to the fluid delivery path by the opening of the breather valve, the fluid concentration rapidly increases, and the pressure in the path increases.

As shown in fig. 4, after the breather valve is opened for a predetermined time t3 (a second predetermined time), the breather valve may be closed; the fluid is then not supplied to the fluid delivery path due to the shut-off of the breather valve, the fluid concentration drops rapidly, and the pressure in the path drops. After the pressure drops to a certain threshold or a predetermined time t4 (third predetermined time) elapses, the air pressure waveform tends to be substantially stationary, opening the correction valve.

In this embodiment, the second predetermined time t3 may be adjusted according to the respiration of the user. For example, it may be determined based on the sampling frequency of the user's breath measured the previous times and/or the internal pressure within the passageway, among other factors; if the user's inspiration time is longer (greater lung capacity), t3 may be increased, and if the user's inspiration time is shorter (less lung capacity), t3 may be decreased. Thus, the breath detection and the pressure measurement can be more accurately performed according to the breathing states of different users. In the present embodiment, the third predetermined time t4 may be set in advance according to an empirical value, or may be set according to a time when the air pressure waveform tends to be stationary.

Then, as shown in fig. 4, after a predetermined time t1 (first predetermined time) in which the breathing valve is closed and the correction valve is opened, the air pressure waveform is in a steady state, and the current atmospheric pressure can be measured by the pressure sensor for a predetermined first time period t 2. That is, after closing the breather valve (i.e., without supplying fluid to the user), the correction valve is in an open state and the atmospheric pressure measurement passage is opened for a first predetermined time t1 and a first time period t 2. The first predetermined time t1 may be, for example, 0.2 seconds; the first time period t2 is the current atmospheric pressure acquisition time, and may be, for example, 0.1 seconds.

In the present embodiment, the first predetermined time t1 may be a fixed value set in advance in the fluid supply apparatus, or may be set according to the breathing frequency of each user. For example, as shown in fig. 4, the first predetermined time t1 may be set according to a period of time during which the breathing waveform of the user tends to be smooth during inhalation.

As shown in fig. 4, after the atmospheric pressure measurement is completed, the correction valve is closed; the measured current barometric pressure value is then used in a breath detection algorithm that detects the breathing state of the user. Further, at time T2, which is determined that the user is in an inhalation state, the breather valve is opened again to supply the fluid to the user, and so on.

In the present embodiment, as shown in fig. 4, with the respiratory valve closed and the correction valve open, the current atmospheric pressure can be measured during the first period t2 by the pressure sensor. With the correction valve closed, the passage pressure can be measured by the pressure sensor for a second period of time different from the first period of time t2, whether or not the breather valve is closed. The first time period (t 2) is a part of the opening time (t1+t2) of the correction valve, so that the atmospheric pressure measurement can be completed in real time in a short time, the breath detection can be more accurate, other actions can not be influenced, and the efficiency of fluid conveying can be further improved; in addition, the user can use the fluid supply apparatus immediately without waiting after turning on the apparatus.

In the above-described method of the present embodiment, by measuring the passage pressure and the current atmospheric pressure respectively in different time periods, it is possible to prevent the measurement of the passage pressure and the current atmospheric pressure from interfering with each other, and thus the correction of the standard atmospheric pressure value is more accurate. It is noted that the above timing is only an example of the present invention, but the present invention is not limited thereto.

In this embodiment, since the atmospheric pressure value does not generally change greatly in a short time, it is not necessary to measure the current atmospheric pressure every time the breathing valve is closed, that is, it is possible to measure the current atmospheric pressure once for a plurality of breaths of the user. Thus, frequent opening and closing of the correction valve can be avoided.

Specifically, as shown in fig. 4, a measurement of the current atmospheric pressure may be made, for example, for two respiratory waveforms. Of course, the present embodiment is not limited thereto, and the measurement of the current atmospheric pressure is performed once for several respiratory waveforms, and may be set according to factors such as the environment in which the fluid supply device is located.

As shown in fig. 4, after the correction valve is closed and a predetermined time t7 has elapsed, the next atmospheric pressure measurement and correction is prepared again. In the present embodiment, for example, the time (t3+t4+t1+t2+t7+t8) may be taken as one cycle of atmospheric pressure measurement and correction. The predetermined time t7 may be a preset time, for example, may be 30 seconds or 1 minute, or, for example, a time corresponding to about several respiration waveforms as in fig. 4; t8 is a value greater than or equal to zero, which can be determined from the time of detection of the respiratory waveform. In addition, regarding the specific content of detecting respiration, reference may be made to the related art.

As can be seen from the above detailed description of fig. 4, in this embodiment, step 104 may include: in the case where the user is in an inhalation state, a breather valve on the fluid delivery path is opened to supply the fluid to the user. Also, in this embodiment, step 104 may further include: after the breather valve is opened, the breather valve is closed after a predetermined time t3 (a second predetermined time) elapses; after closing the breather valve, opening the correction valve after a predetermined time t4 (third predetermined time) elapses; and closing the correction valve after a predetermined time t1+t2 (fourth predetermined time) elapses.

In this embodiment, the correction of the atmospheric pressure standard value for breath detection according to the atmospheric pressure values obtained by measuring a plurality of times in step 103 may include various correction methods. For example, the current atmospheric pressure value obtained by the latest measurement is directly used as an atmospheric pressure standard value; or comparing the current atmospheric pressure value obtained by the current measurement with the atmospheric pressure value obtained by the previous measurement, and taking the current atmospheric pressure value obtained by the current measurement as an atmospheric pressure standard value when the difference value is larger than a preset threshold value; or the atmospheric pressure value obtained by multiple measurements is averaged or weighted to be used as the atmospheric pressure standard value. The embodiments of the present invention are not limited thereto.

In this embodiment, an atmospheric pressure value obtained by a plurality of measurements is averaged or weighted and then used as an atmospheric pressure standard value. For example, in a first period t2 as shown in fig. 4, the atmospheric pressure is measured, for example, by five samplings, that is, five atmospheric pressure values can be obtained; then, the five atmospheric pressure values may be averaged or weighted, the averaged or weighted value is used as the current atmospheric pressure, the current atmospheric pressure value is directly used as a new atmospheric pressure standard value, and the new atmospheric pressure standard value is used to detect the breathing state of the user.

The timing of the individual actions is schematically described above. Hereinafter, the fluid supply method of the present embodiment will be further described.

Fig. 5 is a flowchart of the fluid supply method of the present embodiment. As shown in fig. 5, the method includes:

step 501, measuring an initial atmospheric pressure;

when the switch button of the fluid supply device is opened, for example, the correction valve 203 is opened and the breather valve 202 is closed, so that the atmospheric pressure measurement path of the fluid supply device is opened, and the initial atmospheric pressure is measured once by the pressure sensor 201, thereby obtaining the initial atmospheric pressure value.

Step 502, closing the correction valve 203, and measuring the passage pressure in the fluid supply device by the pressure sensor 201 to obtain one or more passage pressure values;

step 503, determining whether the user is in an inhalation state;

step 504 is performed when the user is in an inhalation state, and step 502 is reverted back when the user is in an exhalation state or there is no breathing waveform; wherein the respiration state of the user is detected from the measured initial atmospheric pressure value and the measured passage pressure value.

At step 504, the breather valve 202 is opened to provide fluid to the user.

Step 505, closing the breather valve 202 after a second predetermined time t3 has elapsed; wherein the setting of the second predetermined time t3 may be as described above.

Step 506, after a third predetermined time t4, opening the correction valve 203; wherein the setting of the third predetermined time t4 may be as described above.

Step 507, after a first predetermined time t1, measuring the current atmospheric pressure by the pressure sensor 201 during a first time period t 2; wherein the first predetermined time t1 may be set to about 0.2 seconds and the first period t2 may be set to about 0.1 seconds.

Step 508, closing the calibration valve 203;

step 509, correcting the atmospheric pressure standard value according to the measured current atmospheric pressure value, and detecting the breathing state of the user according to the corrected atmospheric pressure value and the measured passage pressure value.

In this embodiment, the fluid supply method may further include: detecting a breath of the user after a fifth predetermined time has elapsed with the correction valve closed; in the case where the respiration of the user is not detected (i.e., there is no respiration waveform of the user), the respiration of the user is detected again within a predetermined time t6 (sixth predetermined time); and measuring the current atmospheric pressure in the event that the user's breath has not been detected within a predetermined time t 6.

In the above-described method of the present embodiment, when it is determined again that the respiration of the user is not detected (there is no respiration waveform of the user), that is, it is determined that the user is not using the fluid supply apparatus, the current atmospheric pressure value of the fluid supply apparatus is forcedly measured so that the user can better determine the respiration state of the user when starting to use the fluid supply apparatus at any time.

In this embodiment, the fluid supply method may further include: in the event that respiration of the user is detected (i.e., the presence of a respiration waveform of the user), determining whether the breather valve is opened; and closing the breather valve and opening the correction valve to measure the current atmospheric pressure with the breather valve opened; in the event that the breather valve is not opened, the user's breath continues to be detected.

Fig. 6 is another flowchart of the fluid supply method of the present embodiment. As shown in fig. 6, the method includes:

step 601, detecting whether a respiration waveform of a user exists, if yes, executing step 602, otherwise executing step 603;

this step 601 may be performed after step 502 in fig. 5, wherein the respiration of the user is detected after a fifth predetermined time t5, for example, in the case of a closed correction valve on the fluid delivery path. Through this step 601, it may be determined whether the user is still using the fluid providing apparatus, the fifth predetermined time t5 may be preset and stored in the fluid providing apparatus, and t5 may be equal to t7, but t5 may not be equal to t7 in some cases; the method of detecting respiration may be specifically referred to the related art.

Step 602, determining whether a breather valve is open; if yes, go to step 604; otherwise, return to step 601.

Thus, by using whether or not the breathing valve is ON as a condition for performing atmospheric pressure measurement in real time, it is possible to correlate the atmospheric pressure measurement with the user's breathing, and thus it is possible to accurately perform the atmospheric pressure measurement according to the breathing state of the user, and it is possible to improve not only the accuracy of breathing detection but also the efficiency of fluid transport.

Step 603, determining again whether there is a breathing waveform of the user within a sixth predetermined time t6, if yes, executing step 602, otherwise executing step 604. Wherein the sixth predetermined time t6 may be preset and stored in the fluid supply apparatus.

This can forcibly measure the atmospheric pressure, and improve the accuracy of breath detection.

Step 604, closing the breather valve 202 and opening the correction valve 203 to measure the atmospheric pressure and correct.

In this embodiment, step 604 may correspond to steps 505 through 509 in fig. 5, that is, fig. 6 and 5 may be implemented in combination. Further, the breather valve 202 is closed, for example, after the period of time t3 is opened, and the timing of closing the breather valve 202 and opening the correction valve 203 can be referred to the previous description.

It should be noted that fig. 5 and 6 above are only illustrative of embodiments of the present invention, but the present invention is not limited thereto. For example, the order of execution among the steps may be appropriately adjusted, and other steps may be added or some of the steps may be reduced. Those skilled in the art can make appropriate modifications in light of the above, and are not limited to the descriptions of fig. 5 and 6 described above. Further, fig. 5 and 6 may be implemented in combination.

The existing fluid supply equipment is used for supplying fluid according to the detected inhalation state of a user after one atmospheric pressure measurement is needed before supplying the fluid to the user; the fluid supply device of the embodiment of the application has the working flow, can be directly used by a user after being opened, and then corrects the atmospheric pressure value in real time in the subsequent use process.

By the fluid supply method of the present embodiment, the atmospheric pressure standard value for breath detection can be corrected, so that the current atmospheric pressure value outside the fluid supply device can be used as a basis for detecting (detecting) the breathing state of the user, thereby reducing or avoiding erroneous judgment of the breathing state due to atmospheric pressure change and improving the accuracy of breath detection.

Example 2

This embodiment 2 provides a fluid supply apparatus for performing the fluid supply method described in embodiment 1. The fluid supply device may be, for example, an oxygenerator, an atomizer, or the like. The fluid provided by the fluid providing means may be oxygen, a gas and/or a liquid for atomizing, etc. The present embodiment is not limited thereto, and the specific type of the fluid supply apparatus to be used may be selected according to actual needs. The same contents of this embodiment as those of embodiment 1 will not be described again.

Fig. 7 is a schematic view of the fluid supply apparatus of the present embodiment. As shown in fig. 7, the fluid supply device 700 includes a pressure sensor 701, a determination unit 706, a correction unit 702, and a control unit 703.

Wherein the pressure sensor 701 is for measuring the current atmospheric pressure outside the fluid providing apparatus 700 in real time a plurality of times and for measuring the passage pressure within the fluid delivery passage of the fluid providing apparatus 700; the determination unit 706 is configured to determine whether or not the user is in an inhalation state based on the measured passage pressure value and the atmospheric pressure standard value in the fluid passage; the correction unit 702 corrects an atmospheric pressure standard value for breath detection based on the atmospheric pressure values obtained by the plurality of measurements; the control unit 703 is configured to control the opening and closing of the fluid delivery passage of the fluid supply device 700 based on the passage pressure value inside the fluid supply device 700 and the corrected atmospheric pressure standard value.

In the present embodiment, the pressure sensor 701 measures the current atmospheric pressure and the passage pressure, respectively, in different periods of time. The specific time and manner for measuring the current atmospheric pressure and the passage pressure by the pressure sensor 701 are described in the above-described embodiment 1, and will not be repeated here.

In this embodiment, as shown in fig. 7, the fluid supply apparatus 700 may further include: a breather valve 704 and a correction valve 705, the breather valve 704 and the correction valve 705 being disposed in the fluid delivery path; when the breather valve 704 is opened and the correction valve 705 is closed, the fluid supply device 700 supplies fluid to the user; with the breather valve 704 closed and the calibration valve 705 open, the pressure sensor 701 communicates with the external atmosphere to make a measurement of the current atmospheric pressure. The calibration valve 705 may be, for example, a 2-position 3-way valve, one of which may be open to the fluid delivery path and the other of which may be open to the barometric path.

In the present embodiment, the determination section 706, the correction section 702, and/or the control section 703 may be implemented by any software, hardware, firmware, or a combination thereof. In one embodiment, the functions of the determining portion 706, the correcting portion 702, and/or the controlling portion 703 may be integrated into a processor that may be configured to read a program from a memory and execute the program to implement the functions of the determining portion 706, the correcting portion 702, and/or the controlling portion 703.

It should be noted that the above only describes the respective components or modules related to the present invention, but the present invention is not limited thereto. The fluid supply apparatus of this embodiment may further include other components in the prior art, which are not described herein. For the specific contents of these components or modules, reference may be made to the related art.

Further, for simplicity, the connection relationship or signal trend between the respective components or modules is only exemplarily shown in fig. 7, but it should be apparent to those skilled in the art that various related technologies such as bus connection may be employed. The above-described respective components or modules may be implemented by hardware means such as a processor, a memory, or the like; the practice of the invention is not so limited.

By the fluid supply device of the embodiment, the standard atmospheric pressure value for breath detection can be corrected, so that the current atmospheric pressure value outside the fluid supply device can be used as a basis for detecting (detecting) the breathing state of the user, erroneous judgment on the breathing state caused by atmospheric pressure change can be reduced or avoided, and the accuracy of breath detection is improved.

The embodiment of the invention also provides a processor readable program, which causes a processor to execute the following steps: the fluid delivery path of the fluid supply device is controlled based on the path pressure value inside the fluid supply device and the real-time corrected barometric pressure standard value.

The embodiment of the present invention also provides a storage medium storing a processor-readable program that causes a processor to execute the steps of: the fluid delivery path of the fluid supply device is controlled based on the path pressure value inside the fluid supply device and the real-time corrected barometric pressure standard value.

The above method/system of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software. The present invention relates to a computer readable program which, when executed by a logic means, enables the logic means to carry out the apparatus or constituent means described above, or enables the logic means to carry out the various methods or steps described above. Logic such as field programmable logic, 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 embodiments of the present 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 blocks shown in the figures and/or one or more combinations of the functional blocks may correspond to individual software modules or individual hardware modules of the computer program flow. These software modules may correspond to the individual steps shown in the figures, respectively. These hardware modules may be implemented, for example, by solidifying the 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 modules 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 MEGA-SIM card of a large capacity or a flash memory device of a large capacity, the software module may be stored in the MEGA-SIM card or the flash memory device of a large capacity.

One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may 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 for use in performing the functions described herein. One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks 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 connection with specific embodiments, but it should be apparent to those skilled in the art that these descriptions are intended to be illustrative and not limiting. Various modifications and adaptations of the disclosure may occur to those skilled in the art and are within the scope of the disclosure.

Claims

1. A method of providing a fluid, the method comprising:

measuring a current atmospheric pressure outside the fluid providing apparatus in real time a plurality of times by a pressure sensor in the fluid providing apparatus, and measuring a passage pressure in a fluid delivery passage of the fluid providing apparatus by the pressure sensor;

judging whether a user is in an air suction state according to a passage pressure value and an atmospheric pressure standard value in the fluid conveying passage;

correcting the atmospheric pressure standard value according to the atmospheric pressure value obtained by multiple measurements; and

controlling the opening and closing of the fluid delivery passage based on the passage pressure value and the corrected atmospheric pressure standard value,

wherein one measurement of the current atmospheric pressure is taken for a plurality of breaths of the user,

the pressure sensor measures the current atmospheric pressure and the passage pressure respectively in different time periods,

the current atmospheric pressure is measured by the pressure sensor for a predetermined first period of time after a first predetermined time of closing the breather valve on the fluid delivery path and opening the corrector valve on the fluid delivery path.

2. The method of providing a fluid according to claim 1, wherein,

the passage pressure is measured by the pressure sensor for a second period of time different from the first period of time with the correction valve closed.

3. The fluid supply method according to claim 1, wherein the controlling of the opening and closing of the fluid delivery passage according to the passage pressure value and the corrected atmospheric pressure standard value includes:

and opening a breather valve on the fluid delivery path to provide fluid to the user with the user in the inspiratory state.

4. The fluid supply method according to claim 3, wherein the controlling the opening and closing of the fluid delivery passage according to the passage pressure value and the corrected atmospheric pressure standard value further comprises:

opening the breather valve and closing the breather valve after a second preset time;

opening a correction valve on the fluid delivery path after closing the breather valve and a third predetermined time has elapsed; and

and closing the correction valve after a fourth preset time.

5. The fluid providing method of claim 4, further comprising:

and adjusting the second preset time according to the respiration of the user.

6. The fluid supply method according to any one of claims 1 to 5, further comprising:

detecting the respiration of the user after a fifth predetermined time has elapsed with the correction valve on the fluid delivery path closed;

re-detecting the respiration of the user within a sixth predetermined time without detecting the respiration of the user; and

the current atmospheric pressure is measured if the user's breath has not been detected for the sixth predetermined time.

7. The fluid providing method of claim 6, further comprising:

determining if a breather valve on the fluid delivery path is opened in the event that respiration of the user is detected; and

closing the breather valve and opening the correction valve to measure the current atmospheric pressure with the breather valve opened; in the event that the respiratory valve is not opened, continuing to detect the user's breath.

8. The fluid supply method according to any one of claims 1 to 5, wherein the correcting the atmospheric pressure standard value based on the atmospheric pressure values obtained by a plurality of measurements includes:

taking the current atmospheric pressure value obtained by the latest measurement as the atmospheric pressure standard value; or alternatively

Comparing the current atmospheric pressure value obtained by the current measurement with the atmospheric pressure value obtained by the previous measurement, and taking the current atmospheric pressure value obtained by the current measurement as the atmospheric pressure standard value when the difference value is larger than a preset threshold value; or alternatively

And averaging or weighting the atmospheric pressure values obtained by the plurality of measurements to obtain the atmospheric pressure standard value.

9. A fluid supply apparatus, the apparatus comprising:

a pressure sensor for measuring a current atmospheric pressure outside the fluid supply device in real time a plurality of times, and for measuring a passage pressure within a fluid delivery passage of the fluid supply device;

a determination unit configured to determine whether or not a user is in an inhalation state based on a passage pressure value and an atmospheric pressure standard value in the fluid transport passage;

a correction unit for correcting the atmospheric pressure standard value based on the atmospheric pressure values obtained by the plurality of measurements;

a control unit for controlling the opening and closing of the fluid delivery passage based on the passage pressure value inside the fluid supply device and the corrected atmospheric pressure standard value; and

a breather valve and a correction valve provided in the fluid delivery path,

wherein the pressure sensor takes one measurement of the current atmospheric pressure for a plurality of breaths of the user,

after a first predetermined time when the breather valve is closed and the correction valve is open, the pressure sensor measures the current atmospheric pressure for a predetermined first period of time.

10. The fluid supply apparatus as claimed in claim 9, wherein,

the fluid supply means supplies fluid to a user when the breather valve is opened and the correction valve is closed.