CN117338283A - End-tidal gas concentration detection method, end-tidal gas concentration detection device, end-tidal gas concentration detection apparatus, and storage medium - Google Patents
End-tidal gas concentration detection method, end-tidal gas concentration detection device, end-tidal gas concentration detection apparatus, and storage medium Download PDFInfo
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- 238000001514 detection method Methods 0.000 title claims abstract description 111
- 238000007664 blowing Methods 0.000 claims abstract description 113
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000007599 discharging Methods 0.000 claims abstract description 14
- 238000004590 computer program Methods 0.000 claims description 9
- 238000012790 confirmation Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 3
- 238000011897 real-time detection Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 163
- 239000003795 chemical substances by application Substances 0.000 description 12
- 238000007791 dehumidification Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 210000004072 lung Anatomy 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 206010006322 Breath holding Diseases 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- UQSQSQZYBQSBJZ-UHFFFAOYSA-N fluorosulfonic acid Chemical compound OS(F)(=O)=O UQSQSQZYBQSBJZ-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
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- A61B5/082—Evaluation by breath analysis, e.g. determination of the chemical composition of exhaled breath
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- A61B5/087—Measuring breath flow
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- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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Abstract
The invention relates to the technical field of gas detection, and discloses a method, a device, detection equipment and a storage medium for detecting end-tidal gas concentration, wherein the method comprises the following steps: guiding the subject to perform blowing operation; when an air blowing signal of the detected person is received, calculating the air volume of a cavity according to the body parameter of the detected person, discharging the air volume which is the same as the air volume of the cavity while receiving the air blowing, and then collecting the rest air blowing; detecting whether blowing is interrupted in real time, and if not, determining whether the pressure or flow of the blown gas exceeds a preset first threshold value; and if the pressure and the flow do not exceed the first threshold, inputting the rest of the blowing gas into a detection gas path until the air pressure or the air inlet volume in the detection gas path reaches a preset requirement, and then detecting the concentration of the end-tidal gas. Therefore, the user can perform expiration detection in a standardized manner, and the operation difficulty is reduced.
Description
Technical Field
The present invention relates to the field of gas detection, and in particular, to a method and apparatus for detecting end-tidal gas concentration, a detection device, and a storage medium.
Background
Currently, sensors for detecting the concentration of end-tidal CO mainly include electrochemical sensors and infrared sensors. The exhaled air of the human body is high-humidity air containing moisture, such as directly detecting the exhaled air which is not dried, and the moisture can influence the use effect of the sensor and accelerate the damage of the sensor. In order to solve the interference of moisture in the exhaled air, a commonly used method is to collect the exhaled air into an air bag with a dehumidifying agent and the like for temporary storage, pre-treat the exhaled air and then introduce the pre-treated air into a sensor for measurement, or directly connect a perfluorinated sulfonic acid pipe in front of the sensor for dehumidification. The former method requires separate collection and preservation of the exhaled breath sample, is cumbersome to operate, and increases the management cost of the sample gas. In another method, the optimal dehumidification effect of the perfluorosulfonic acid tube can only reduce the humidity of the exhaled air to the humidity of the environment due to the limitation of the dehumidification principle of the perfluorosulfonic acid tube; when the instrument is in a high humidity environment, the requirements of the sensor for dehumidification are not met, and the dehumidification is invalid.
Disclosure of Invention
In a first aspect, the present application provides a method for detecting end-tidal gas concentration, comprising:
when an air blowing signal of a detected person is received, acquiring body parameters of the detected person, calculating the air volume of a cavity, discharging the air volume which is the same as the air volume of the cavity while receiving the air blowing, and then collecting the rest air blowing;
detecting whether blowing is interrupted in real time, if not, determining whether the pressure or flow of the blown gas exceeds a preset first threshold value;
and if the pressure and the flow do not exceed the first threshold, inputting the rest of the blowing gas into a detection gas path until the gas pressure in the detection gas path reaches a preset pressure or the inlet volume reaches a preset volume, and then detecting the concentration of the end-expiratory gas.
Further, the method further comprises:
prompting the testee to perform deep inhalation operation, and waiting for a confirmation signal of the completion of deep inhalation of the testee;
after receiving the confirmation signal, prompting the testee to perform breath-hold operation, and displaying the recommended breath-hold duration and breath-hold timing;
and when the breath-hold time reaches the breath-hold time, prompting the testee to start blowing.
Furthermore, a dehumidifying agent is arranged in the detection gas circuit;
after the remaining blowing gas is input into the detection gas path, the method further comprises the following steps:
detecting the humidity of the blowing gas, and if the humidity of the blowing gas meets the preset requirement, detecting the gas concentration;
if the humidity of the blown gas does not meet the preset requirement, stopping detection and reminding that the dehumidifier needs to be replaced.
Further, after the reminding needs to replace the dehumidifier, the method further comprises:
after the replacement is finished, judging whether the dehumidifying agent is effective or not according to the air humidity and the air humidity in the detection air circuit, and if the dehumidifying agent is not effective, continuously prompting the replacement of the dehumidifying agent.
Further, the real-time detection of whether the blowing is interrupted includes:
judging whether the pressure or the flow of the blowing gas reaches a second threshold value, if not, determining that the blowing is interrupted, and if so, determining that the blowing is not interrupted.
Further, if the blowing interruption is detected, the method further comprises:
storing the currently received gas and re-executing the step when the blowing signal of the subject is received;
and continuously receiving the blowing gas of the testee, continuously judging whether the blowing is interrupted or not, and determining that the blowing of the testee is finished until the air pressure or the air inlet volume in the detection air path reaches the preset threshold value.
Further, the calculating the cavity gas amount and discharging the same gas amount as the cavity gas amount while receiving the blowing gas includes:
calculating the volume of the cavity channel gas according to the personal body information input by the testee;
when the blowing signal is received, measuring the flow rate of the expired air, controlling the air circuit to discharge the breathed air, and calculating the volume of the discharged air according to the flow rate of the expired air;
and when the volume of the discharged gas reaches the volume of the cavity channel gas, controlling the gas channel to stop the discharging operation, and storing the gas which is blown into the preset gas channel.
In a second aspect, the present application further provides an end-tidal gas concentration detection apparatus, comprising:
the guiding module is used for guiding the testee to perform blowing operation;
the filtering module is used for calculating the cavity gas amount according to the body parameters of the testee when receiving the blowing signal of the testee, discharging the gas amount which is the same as the cavity gas amount while receiving the blowing gas, and then collecting the rest blowing gas;
the judging module is used for detecting whether the blowing is interrupted in real time, and if the blowing is interrupted, determining whether the pressure or the flow of the blown gas exceeds a preset first threshold value;
and the detection module is used for inputting the rest blowing gas into the detection gas path until the gas pressure in the detection gas path reaches the preset pressure or the air inlet volume reaches the preset volume if the pressure and the flow do not exceed the first threshold value, and then detecting the concentration of the end-expiratory gas.
In a third aspect, the present application also provides an exhalation detection apparatus comprising: the device comprises an air inlet unit, a flow limiting unit, a detection unit, a processor and a memory, wherein the air inlet unit is used for receiving incoming gas, the flow limiting unit is used for controlling airflow flow, the detection unit is used for detecting gas concentration, the memory is stored with a computer program, and the computer program executes the end-expiratory gas concentration detection method when running on the processor.
In a fourth aspect, the present application also provides a readable storage medium storing a computer program that, when run on a processor, performs a method of end-tidal gas concentration detection.
The invention discloses a method, a device, a detection device and a storage medium for detecting end-tidal gas concentration, wherein the method comprises the following steps: guiding the subject to perform blowing operation; when an air blowing signal of the detected person is received, calculating the air volume of a cavity according to the body parameter of the detected person, discharging the air volume which is the same as the air volume of the cavity while receiving the air blowing, and then collecting the rest air blowing; detecting whether blowing is interrupted in real time, and if not, determining whether the pressure or flow of the blown gas exceeds a preset first threshold value; and if the pressure and the flow do not exceed the first threshold, inputting the rest of the blowing gas into a detection gas path until the air pressure or the air inlet volume in the detection gas path reaches a preset requirement, and then detecting the concentration of the end-tidal gas. The user can perform breath detection in a standardized way, the operation difficulty is reduced, the user can perform gas concentration detection in a personal and simple way, excessive expertise is not needed, and the use difficulty of the user is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are required for the embodiments will be briefly described, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope of the present invention. Like elements are numbered alike in the various figures.
FIG. 1 is a schematic flow chart of a method for detecting end-tidal gas concentration according to an embodiment of the present application;
FIG. 2 shows a schematic diagram of an exhalation detection apparatus according to an embodiment of the present application;
fig. 3 shows an end-tidal gas concentration detection apparatus according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
The terms "comprises," "comprising," "including," or any other variation thereof, are intended to cover a specific feature, number, step, operation, element, component, or combination of the foregoing, which may be used in various embodiments of the present invention, and are not intended to first exclude the presence of or increase the likelihood of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the invention belong. The terms (such as those defined in commonly used dictionaries) will be interpreted as having a meaning that is the same as the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in connection with the various embodiments of the invention.
The technical scheme is applied to detection operation of the gas at the end of expiration of a person, and is mainly used for detecting a series of operations of equipment when receiving expiration of a person to be detected, and the person to be detected is guided to perform blowing operation; detecting whether blowing is interrupted in real time when a blowing signal of the detected person is received, and if not, determining whether the pressure or flow of the blowing gas exceeds a preset first threshold value; if the pressure and the flow rate do not exceed the first threshold value, calculating a cavity gas amount according to the body parameter of the subject, discharging the same gas amount as the cavity gas amount while receiving the blowing gas, and then collecting the blowing gas; and inputting the rest blowing gas into a detection gas path to detect the concentration of the end-tidal gas. To enable detection of the end of exhalation.
The technical scheme of the application is described in the following specific embodiments.
Example 1
As shown in fig. 1, the end-tidal gas concentration detection method of the present embodiment includes:
step S100, when an air blowing signal of a subject is received, acquiring body parameters of the subject, calculating the air volume of a cavity, discharging the air volume identical to the air volume of the cavity while receiving the air blowing, and then collecting the rest air blowing;
as shown in fig. 2, there is a schematic structural view of an exhalation detection apparatus including an air intake unit 100, a flow limiting unit 200, and a detection unit 300.
The air intake unit 100 is used for collecting air breathed in by a subject, and is provided with a pressure detector, a temperature/humidity sensor, a flowmeter, a CO2 sensor and the like, and can detect data such as flow rate, pressure and the like of the air intake, and can also perform operations such as exhausting cavity air and the like.
The flow limiting unit 200 controls the opening degree of the flow limiting unit to enable the expired air to enter the subsequent detecting unit 300 according to the set flow rate or pressure, and the detecting unit 300 is a unit device for finally detecting the target gas concentration in the sample gas.
The air inlet unit 100, the flow limiting unit 200, and the detecting unit 300 are designed with corresponding air paths for delivering the incoming air, and how specific air paths relate to the air paths is not the focus of the present application, and will not be described herein.
In this embodiment, the end-tidal gas concentration detection method of this embodiment is explained taking the end-tidal gas concentration detection apparatus of fig. 2 as an example.
Before the detection starts, the above-mentioned expiration detection device can guide the testee how to perform the blowing operation correctly by means of voice or screen display, because the air in the lungs and alveoli of the testee realize the sufficient exchange when the detected air is needed, the testee needs to perform the operations of deep inhalation, breath-holding and then expiration, wherein the detection method of the embodiment can perform the corresponding guide when the breath-holding is performed at the deep inhalation time.
For example, when the subject starts to start to perform the expiration detection, the subject is prompted to perform the deep inhalation operation by means of voice or voice text image, and waits for a confirmation signal that the deep inhalation of the subject is completed. The confirmation signal of the deep suction completion can be completed by an interactive key, for example, the examinee is prompted to press a certain key on the screen to confirm after the deep suction is completed.
After the deep inhalation step is confirmed, the testee is guided to carry out a breath-hold step, at the moment, the time for which the testee needs to hold breath can be informed in a mode of displaying the recommended breath-hold time length and the breath-hold timing, the common breath-hold time is about 5 to 10 seconds, and the testee can be prompted to carry out blowing operation after the breath-hold timing reaches the breath-hold time length. Therefore, the guiding operation of the testee before expiration is completed, and the fact that the testee can be effectively prompted to perform expiration detection in a standard mode in the guiding process can be seen, and time and energy wasting operations such as repeated blowing and the like caused by irregular blowing can be avoided to a great extent.
The breath-hold duration and the breath-hold timing can be timed in a countdown mode or in a timing mode.
The body parameters of the subject can be obtained by means of pre-collection, in this embodiment, the body parameters of the subject are mainly used to determine the volume of the cavity gas, wherein the volume Vaw of the cavity gas is related to the height, the weight and the age, for example, about 150ml for an adult (3.3 ml/kg for an infant, and the adult falls to 2.2 ml/kg), so that a theoretical cavity gas volume of the subject can be calculated through the weight.
When the airway gas is expired, no exchange occurs between the lung and the alveoli, and only the gas exists in the oral cavity and the trachea, and the gas is not required for detection, is interference gas and needs to be removed.
In addition to the weight and the cavity gas, the height is also related to the cavity gas, for example, the volume Vaw of the cavity gas can be calculated by the following formula.
Vaw= 7.585 ·body Gao 2.363.363·10-4;
therefore, before the expiration detection, personal body information of the detected person, such as age, weight or height, can be collected, so that the volume of one cavity can be directly calculated. The specific manner of calculation and collection of the parameters can be set according to practical situations, and are not particularly limited herein.
After the volume of the cavity gas is calculated, the exhaust operation can be carried out according to the volume, and it can be understood that when a person blows, the cavity gas is required to be firstly detected by the detection equipment and then is the gas of the lung, so when a blowing signal is detected, the blowing gas of the Vaw volume is firstly exhausted, then the subsequent lung gas is collected, the cavity gas is exhausted, and only the gas at the tail end of the breath is collected, so that the detected gas is the gas type required by detection.
Wherein, the operation of exhausting the cavity gas is also completed in the air inlet unit 100, and when the blowing signal is received, the flow rate of the expired air is measured, the air path is controlled to exhaust the expired air, and the volume of the exhausted air is calculated according to the flow rate of the expired air; and when the volume of the discharged gas reaches the volume of the cavity channel gas, controlling the gas channel to stop the discharging operation, and storing the gas which is blown into the preset gas channel.
The finally stored lung gas is also temporarily stored in the air inlet unit 100, and corresponding air exhaust and air storage operations can be realized by arranging a plurality of air paths.
Step S200, detecting whether blowing is interrupted in real time, and if not, determining whether the pressure or flow of the blown gas exceeds a preset first threshold value;
when the detected person blows, the device can sense the blowing actions such as the blowing air pressure, the blowing air flow and the like through the sensor, so that blowing signals can be generated, the detected person is known to start blowing when the blowing signals are received, whether the blowing interruption phenomenon occurs after the blowing is started is detected in real time, and if the blowing interruption phenomenon does not occur, whether the pressure or the flow of the blowing air exceeds a preset first threshold value is determined.
Because operations such as dehumidification and the like are required after the air is blown into the air path, the air flow speed is too high or the pressure is too high, and the detection result is influenced, so that the flow and the pressure of the air blown during the air blowing are detected, the air blowing is ensured not to exceed a first threshold value, if the air blowing exceeds the first threshold value, the air blowing is required to be collected again, a subject is reminded to reduce the air blowing force, or the flow or the pressure of the air inlet can be changed by adjusting a flow limiting device in the flow limiting unit 200. For example by increasing the restriction to reduce the amount of gas and pressure.
In order to be able to understand that when the blowing interruption occurs, the collected gas is necessarily insufficient, but the blowing signal is not detected at this time, so that the detection of the blowing interruption can be judged based on the pressure and flow rate of the gas that has been collected. Therefore, the second threshold value can be set, when the flow or pressure of the collected gas does not reach the preset second threshold value, the current detected person is judged to be in a state of blowing interruption, and the detected person is required to continue blowing at the moment, so that the collected gas meets the detection requirement.
When the condition of air blowing interruption is found, the collected air is stored, then the step S100 and the step S200 are re-executed, the testee is allowed to blow the air next time, then the cavity air is continuously exhausted, the subsequent end expiration is received until the air pressure in the detection air path reaches the preset pressure or the air inlet volume reaches the preset volume, the collected air is confirmed to be enough, and the air blowing interruption is not judged any more even if the air blowing signal is not used.
It can be understood that, even if the blowing interruption occurs, for the exhalation detection method of the present embodiment, there is no step change, and the operation of replacing the cavity air bag and the like is required for the subject because of the exhalation collection performed multiple times, because the processing of the step S100 described above enables the exhalation detection device to directly collect the gas of the end of the exhalation of the subject, the collection operation of multiple mouthpieces of gas can be completed only by repeatedly executing the step S100 described above, and the whole process is simple and effective, and accords with the intuitiveness of the use of the subject, and can give the subject a better detection experience.
And step S300, if the pressure and the flow do not exceed the first threshold, inputting the rest of the blowing gas into a detection gas path until the air pressure in the detection gas path reaches a preset pressure or the air inlet volume reaches a preset volume, and then detecting the concentration of the end-expiratory gas.
When the collected gas flow or pressure does not exceed the first threshold, the gases are input into a final detection gas path, the detection gas path is located in a detection unit in fig. 1, wherein in order to detect the concentration of the gases in the detection gas path, the gases are required to meet a certain air pressure condition in the detection gas path to be detected normally, so that when the collected gas at the end of expiration is input into the detection gas path, the pressure or the air inlet volume in the detection gas path is detected in real time, and when the collected gas at the end of expiration reaches the set threshold, the input is stopped and the concentration of the specified gases in expiration is detected, wherein the specified gases can be gases such as carbon dioxide, carbon monoxide and the like, and the specific detection operation is not repeated here.
In one possible scheme, the gas blown by the subject can be directly blown into the detection gas path in the blowing process, and the storage gas path can also be arranged in front of the detection gas path. If the air is directly blown into the detection air path, when the pressure in the detection air path is detected to reach a preset value or the air inlet volume reaches a preset volume, the detected person can be prompted to stop blowing so as to avoid overlarge pressure. If the air pressure does not reach the preset value or the air intake volume does not reach the preset volume, and the subject stops blowing, the user may be prompted to blow a breath as in step S200.
In addition, because the gas is required to be dry gas during the detection of expiration, a desiccant or a dehumidifier can be arranged in the detection gas path to dehumidify, so that the humidity of the blown gas can be detected in the detection gas path, if the humidity of the blown gas meets the preset requirement, the concentration of the gas is detected, and if the humidity of the blown gas does not meet the preset requirement, the detection is stopped, and the dehumidifier is reminded to be replaced. The preset requirement is that the gas humidity is lower than the preset humidity, in theory, the gas humidity exhaled by a human body is approximately the same, so long as the dehumidifying agent does not fail in normal operation, the dehumidified gas humidity is within a predictable range, if the gas humidity passing through the dehumidifying agent is higher than the preset humidity, the dehumidifying agent fails, the detection cannot be performed at the moment, and the user is reminded of replacing the dehumidifying agent.
After the user finishes replacing, the dehumidifier is compared with the air humidity in the detection air circuit according to the outside air humidity, whether the dehumidifier is effective or not is judged, if the dehumidifier is not effective, the user is continuously prompted to replace the dehumidifier, and under the condition that the dehumidifier is not effective, a series of operations for collecting and exhaling are not executed, because the exhaling is also ineffective to be detected at the moment, the user is required to replace an effective dehumidifier to continue exhaling detection.
After the user changes the dehumidifying agent, the user can also carry out reset check, and whether the dehumidifying agent is connected to be installed at the correct position is determined by detecting the pressure condition of each air path in the equipment, if the installation position is detected to be incorrect, the user is reminded to reinstall the dehumidifying agent, and the correct installation is ensured.
According to the end-tidal gas detection method, before expiration, a user is guided to ensure that the user can perform expiration detection through standard expiration operation, meanwhile, the cavity gas quantity of the user is automatically calculated through collecting personal body information of the user, such as height, age, sex and the like, so that the cavity gas is removed in a mode of removing the same quantity of gas at the beginning of expiration, only the lung gas at the end of expiration is collected, and finally expiration concentration is detected. In the process of detecting expiration, the user receives guidance and only needs to blow air in the whole detection process, and redundant actions are not needed for removing the cavity channel air, so that the whole detection flow is simplified. And when the dehumidifier inside the equipment goes wrong, the user can be reminded to replace, and the dehumidifier is ensured to be replaced effectively in a self-checking mode, so that the follow-up expiration detection result is ensured to be correct.
Example 2
As shown in fig. 3, this embodiment further provides an end-tidal gas concentration detection apparatus, including:
a filtering module 10 for calculating a cavity gas amount according to a body parameter of a subject when a blowing signal of the subject is received, discharging the same gas amount as the cavity gas amount while receiving the blowing gas, and then collecting the remaining blowing gas;
the judging module 20 is configured to detect whether the blowing is interrupted in real time, and if no interruption occurs, determine whether the pressure or the flow of the blown gas exceeds a preset first threshold;
and the detection module 30 is configured to input the remaining blowing gas into the detection gas path if the pressure and the flow rate do not exceed the first threshold value, until the gas pressure in the detection gas path reaches a preset pressure or the intake volume reaches a preset volume, and then detect the concentration of the end-tidal gas.
The present application also provides an exhalation detection apparatus comprising: the device comprises an air inlet unit, a flow limiting unit, a detection unit, a processor and a memory, wherein the air inlet unit is used for receiving incoming gas, the flow limiting unit is used for controlling airflow flow, the detection unit is used for detecting gas concentration, the memory is stored with a computer program, and the computer program executes the end-expiratory gas concentration detection method when running on the processor.
The present application also provides a readable storage medium storing a computer program which, when run on a processor, performs an end-tidal gas concentration detection method.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other manners as well. The apparatus embodiments described above are merely illustrative, for example, of the flow diagrams and block diagrams in the figures, which illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules or units in various embodiments of the invention may be integrated together to form a single part, or the modules may exist alone, or two or more modules may be integrated to form a single part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a smart phone, a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention.
Claims (10)
1. A method for detecting end-tidal gas concentration, comprising:
when an air blowing signal of a detected person is received, acquiring body parameters of the detected person, calculating the air volume of a cavity, discharging the air volume which is the same as the air volume of the cavity while receiving the air blowing, and then collecting the rest air blowing;
detecting whether blowing is interrupted in real time, and if not, determining whether the pressure or flow of the blown gas exceeds a preset first threshold value;
and if the pressure and the flow do not exceed the first threshold, inputting the rest of the blowing gas into a detection gas path until the air pressure in the detection gas path reaches a preset pressure or the air inlet volume reaches a preset volume, and then detecting the concentration of the end-expiratory gas.
2. The end-tidal gas concentration detection method according to claim 1, further comprising:
prompting the testee to perform deep inhalation operation, and waiting for a confirmation signal of the completion of deep inhalation of the testee;
after receiving the confirmation signal, prompting the testee to perform breath-hold operation, and displaying the recommended breath-hold duration and breath-hold timing;
and when the breath-hold time reaches the breath-hold time, prompting the testee to start blowing.
3. The method according to claim 1, wherein a dehumidifier is provided in the detection gas path;
after the remaining blowing gas is input into the detection gas path, the method further comprises the following steps:
detecting the humidity of the blowing gas, and if the humidity of the blowing gas accords with the preset humidity, detecting the gas concentration;
if the humidity of the blown gas does not accord with the preset humidity, stopping detection and reminding that the dehumidifier needs to be replaced.
4. The method of claim 3, wherein after the reminding that the dehumidifier needs to be replaced, further comprising:
after the replacement is finished, judging whether the dehumidifier is effective or not according to the outside air humidity and the detected air humidity in the air path, and if the dehumidifier is not effective, continuously prompting the replacement of the dehumidifier.
5. The end-tidal gas concentration detection method according to claim 1, wherein the real-time detection of whether the insufflation is interrupted comprises:
judging whether the pressure or the flow of the blowing gas reaches a second threshold value, if not, determining that the blowing is interrupted, and if so, determining that the blowing is not interrupted.
6. The end-tidal gas concentration detection method according to claim 1, wherein if an interruption of insufflation is detected, further comprising:
storing the currently received gas and re-executing the step when the blowing signal of the subject is received;
and continuously receiving the blowing gas of the testee, continuously judging whether the blowing is interrupted or not, until the air pressure in the detection air path reaches the preset pressure or the air inlet volume reaches the preset volume, and determining that the blowing of the testee is finished.
7. The end-tidal gas concentration detection method according to claim 1, wherein the calculating the chamber gas volume and discharging the same gas volume as the chamber gas volume while receiving the insufflation gas, comprises:
calculating the volume of the cavity channel gas according to the personal body information input by the testee;
when the blowing signal is received, measuring the flow rate of the expired air, controlling the air circuit to discharge the breathed air, and calculating the volume of the discharged air according to the flow rate of the expired air;
and when the volume of the discharged gas reaches the volume of the cavity channel gas, controlling the gas channel to stop the discharging operation, and storing the gas which is blown into the preset gas channel.
8. An end-tidal gas concentration detection apparatus, comprising:
the filtering module is used for calculating the cavity gas volume according to the body parameters of the testee when receiving the blowing signals of the testee, discharging the gas volume identical to the cavity gas volume while receiving the blowing gas, and then collecting the rest blowing gas;
the judging module is used for detecting whether the blowing is interrupted in real time, and if the blowing is interrupted, determining whether the pressure or the flow of the blown gas exceeds a preset first threshold value;
and the detection module is used for inputting the rest blowing gas into the detection gas path if the pressure and the flow do not exceed the first threshold value until the air pressure or the air inlet volume in the detection gas path reaches the preset requirement, and then detecting the concentration of the end-expiratory gas.
9. An exhalation detection apparatus comprising a processor and a memory, the memory storing a computer program that, when run on the processor, performs the end-tidal gas concentration detection method of any one of claims 1 to 7.
10. A readable storage medium, characterized in that it stores a computer program which, when run on a processor, performs the end-tidal gas concentration detection method according to any one of claims 1 to 7.
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| CN202311647569.2A CN117338283A (en) | 2023-12-04 | 2023-12-04 | End-tidal gas concentration detection method, end-tidal gas concentration detection device, end-tidal gas concentration detection apparatus, and storage medium |
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| CN202311647569.2A CN117338283A (en) | 2023-12-04 | 2023-12-04 | End-tidal gas concentration detection method, end-tidal gas concentration detection device, end-tidal gas concentration detection apparatus, and storage medium |
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