Method and system for measuring respiratory airflow by measuring change in air

Abstract

Disclosed are a method and a system for measuring respiratory airflow by using an air change measurement sensor. According to an embodiment of the present invention, the respiratory airflow measurement system comprises: an air change measurement sensor disposed around a user's body organ, in which inhalation and exhalation occur according to respiration of the user, to measure a change in air according to the inhalation and the exhalation; and a circuit unit attached to the user's body and connected to the air change measurement sensor to receive information on the change in air measured by the air change measurement sensor, the air change measurement sensor being disposed around the body organ. At this time, the respiratory airflow of the user can be measured on the basis of the information on the change in air.

Description

Method and system for measuring respiratory flow by measuring changes in air

[0001] The following description relates to a method and system for measuring respiratory flow by measuring changes in air.

[0002] Measuring respiratory flow, along with oxygen saturation, is essential for diagnosing sleep apnea. Conventional methods for measuring respiratory flow involve inserting a tube into the nose or wearing a mask to measure airflow pressure. However, the tube or mask can be uncomfortable to wear, and in severe cases, breathing can become difficult and measurement impossible.

[0003] A method and system for measuring respiratory flow by measuring changes in air are provided.

[0004] An air change measuring sensor is provided, which is disposed around a user's body organ where inhalation and exhalation occur according to the user's breathing, and measures changes in air according to the inhalation and exhalation; and a circuit unit is attached to the user's body and connected to the air change measuring sensor so that the air change measuring sensor is disposed around the body organ, and receives information about changes in air measured by the air change measuring sensor, and a respiratory air measuring system is provided, characterized in that the user's respiratory air is measured based on the information about changes in air.

[0005] According to one side, the change in air according to the inhalation and exhalation may include at least one of a temperature change and a humidity change of the air according to the inhalation and exhalation, and the air change measurement sensor may be characterized by including at least one of a temperature sensor and a humidity sensor.

[0006] According to another aspect, the circuit may be characterized in that the user's respiratory flow is measured based on information about changes in the air.

[0007] According to another aspect, the circuit may be characterized in that it transmits information about changes in the air to an external device for measuring the user's respiratory flow.

[0008] According to another aspect, it may be characterized in that at least one of the user's respiratory rate and whether or not the user is in apnea is determined based on the respiratory flow in the circuit unit or an external device communicating with the circuit unit.

[0009] According to another aspect, the air change measuring sensor may include a flexible printed circuit board (PCB), and may be characterized in that the air change measuring sensor is adjusted to be placed around the user's body organ through the flexible PCB.

[0010] According to another aspect, the circuit part may be attached to an external representation of the user's nose, and the air change measuring sensor may be connected to the circuit part according to the curvature of the user's nose and placed in front of the user's nose.

[0011] According to another aspect, the circuit unit may be configured to transmit at least one of information on changes in the air, the respiratory system, the user's respiratory rate determined based on the respiratory system, and whether the user is apnea determined based on the respiratory system to an external device, and the external device may display at least one of information on changes in the air, the respiratory system, the user's respiratory rate determined based on the respiratory system, and whether the user is apnea determined based on the respiratory system through a display.

[0012] According to another aspect, the respiratory flow measurement system may further include at least one sensor among an oxygen saturation sensor for measuring the oxygen saturation of the user and a motion sensor for measuring the motion of the user.

[0013] A method for measuring respiratory airflow in a respiratory airflow measurement system is provided, comprising: a step of operating an air change measurement sensor further included in a circuit unit of the respiratory airflow measurement system to measure changes in air according to inhalation and exhalation of a user due to respiration; a step of transmitting information about changes in air measured by the air change measurement sensor in the circuit unit to an external device or measuring the respiratory airflow of the user based on information about changes in the air; and a step of transmitting information about the measured respiratory airflow to the external device when the respiratory airflow is measured in the circuit unit.

[0014] A method and system for measuring respiratory flow by measuring changes in air can be provided.

[0015] FIG. 1 is a drawing showing an example of a general appearance of a respiratory air measurement system according to one embodiment of the present invention.

[0016] FIG. 2 is a diagram showing examples of temperature change data and respiratory airflow data in one embodiment of the present invention.

[0017] FIG. 3 is a drawing showing an example of the internal configuration of a respiratory air measurement system according to one embodiment of the present invention.

[0018] Figure 4 is a flowchart illustrating an example of a respiratory flow measurement method according to one embodiment of the present invention.

[0019] FIG. 5 is a block diagram illustrating an example of a computer device according to one embodiment of the present invention.

[0020] Hereinafter, embodiments are described in detail with reference to the attached drawings. However, the embodiments may be modified in various ways, and the scope of the claims of the patent application is not limited or restricted by these embodiments. It should be understood that all modifications, equivalents, or alternatives to the embodiments are encompassed by the claims.

[0021] The terms used in the examples are for illustrative purposes only and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "have" are intended to indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but should be understood to not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0022] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the embodiments pertain. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0023] In addition, when describing with reference to the attached drawings, identical components will be assigned the same reference numerals regardless of the drawing numbers, and redundant descriptions thereof will be omitted. When describing embodiments, if a detailed description of a related known technology is judged to unnecessarily obscure the gist of the embodiment, the detailed description will be omitted.

[0024] Additionally, terms such as first, second, A, B, (a), (b), etc. may be used to describe components of the embodiments. These terms are only intended to distinguish the components from other components, and the nature, order, or sequence of the components are not limited by the terms. When a component is described as being "connected," "coupled," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but another component may also be "connected," "coupled," or "connected" between each component.

[0025] Components included in one embodiment and components with common functions will be described using the same names in other embodiments. Unless otherwise stated, the descriptions given in one embodiment apply to other embodiments, and detailed descriptions will be omitted to the extent of overlap.

[0026] FIG. 1 is a schematic diagram illustrating an example of a respiratory air measurement system according to an embodiment of the present invention. The respiratory air measurement system according to the present embodiment may include a circuit unit (110) and an air change measurement sensor (120).

[0027] The circuit unit (110) may be attached to the user's body, and the air change measuring sensor (120) may be placed around the user's body organ where inhalation and exhalation occur according to the user's breathing. In the embodiment of Fig. 1, the circuit unit (110) is attached to the outer surface of the user's nose (130), and the air change measuring sensor (120) connected to the circuit unit (110) according to the curvature of the user's nose is placed in front of the user's nose (130) (for example, in front of the external nostril (nostril) of the nose (130). Depending on the embodiment, the circuit unit (110) may be attached to another body part, such as the user's cheek, instead of the outer surface of the nose (130). In addition, the air change measuring sensor (120) may also be placed in front of the user's mouth instead of in front of the user's nose (130).

[0028] At this time, the air change measurement sensor (120) can measure changes in the air (temperature change and / or humidity change) that occur according to the user's breathing, such as inhalation and exhalation. To this end, the air change measurement sensor (120) may include a temperature sensor and / or a humidity sensor. For example, the air change measurement sensor (120) may continuously measure changes in the air over time. In this case, the circuit unit (110) may receive and accumulate information on changes in the air measured by the air change measurement sensor (120) from the air change measurement sensor (120). Hereinafter, the accumulated information on changes in the air (temperature change and / or humidity change) is referred to as air change data. The air change data may include temperature change data and / or humidity change data.

[0029] The user's respiratory flow can be obtained through such air change data. For example, the user's respiratory flow can be measured as the user's inhalation and exhalation pattern through the temperature change pattern obtained through the temperature change data, or the user's respiratory flow can be measured as the user's inhalation and exhalation pattern through the humidity change pattern obtained through the humidity change data. Depending on the embodiment, the user's respiratory flow can be measured as the user's inhalation and exhalation pattern by using both the temperature change pattern and the humidity change pattern. Hereinafter, information about the accumulated respiratory flow is referred to as respiratory flow data. In this way, using the respiratory flow measurement system according to the present embodiment, the user's respiratory flow can be measured by measuring the temperature / humidity change by positioning a precision temperature / humidity sensor capable of detecting minute temperature / humidity changes in front of the user's nose (130). Therefore, since the user does not have to insert a tube or wear a mask, the user's respiratory flow can be accurately measured while eliminating user inconvenience compared to existing respiratory flow measurement methods.

[0030] The circuit unit (110) can communicate with an external device (140) and transmit measurement data to the external device (140). At this time, the external device (140) can display, based on the received measurement data, at least one of a waveform graph of air change data (a waveform graph of temperature change data and / or a waveform graph of humidity change data), a waveform graph of respiratory data, the user's respiratory rate, and whether the user is experiencing apnea on the display, and can provide the user with an alarm based on the user's respiratory rate and / or whether the user is experiencing apnea.

[0031] In the first embodiment, the circuit unit (110) can generate respiratory flow data using air change data. In this case, the circuit unit (110) can transmit the air change data and respiratory flow data to an external device (140). At this time, the external device (140) can use the received respiratory flow data to determine the user's respiratory rate and / or whether or not the user is experiencing apnea.

[0032] In the second embodiment, the circuit unit (110) can directly transmit air change data to an external device (140). In this case, the external device (140) can use the air change data to generate respiratory data, and can use the respiratory data to determine the user's respiratory rate and / or whether or not the user is experiencing apnea.

[0033] In a third embodiment, the circuit unit (110) can generate respiratory flow data using air change data, and then use the respiratory flow data to determine the user's respiratory rate and / or whether or not the user is experiencing apnea. In this case, the circuit unit (110) can transmit the air change data, the respiratory flow data, and information regarding the user's respiratory rate and / or whether or not the user is experiencing apnea to an external device (140).

[0034] In each embodiment, the external device (140) can display at least one of a waveform graph of air change data, a waveform graph of respiratory data, the user's respiratory rate, and whether the user is experiencing apnea on a display included in the external device (140), and can provide an alarm to the user according to the user's respiratory rate and / or whether the user is experiencing apnea.

[0035] In the embodiment of FIG. 1, the external device (140) is expressed in the form of a smartphone, but the external device (140) may be implemented in the form of various electronic devices such as a smartwatch or a tablet PC. In addition, the external device (140) may be connected to the circuit unit (110) using various wired and / or wireless communication means.

[0036] In addition, the air change measurement sensor (120) may include at least one of various temperature sensors, such as a capacitive temperature sensor, a digital temperature sensor, a thermistor, etc. In addition, the air change measurement sensor (120) may include at least one of various humidity sensors, such as a capacitive humidity sensor, a resistive humidity sensor, and a thermal type humidity sensor.

[0037] In addition, the air change measurement sensor (120) may include a flexible printed circuit board (PCB), and the air change measurement sensor (120) may be adjusted to be placed around the user's body organ through the flexible PCB. For example, in the case where the circuit unit (110) is attached to the outer surface of the user's nose (130) as in the embodiment of FIG. 1, the air change measurement sensor (120) may be placed in front of the user's nose (130) by being connected according to the curvature of the circuit unit (110) and the user's nose (130).

[0038] Meanwhile, the circuit unit (110) and / or the connection unit (for example, a connection line based on a flexible PCB) connecting the circuit unit (110) and the air change measurement sensor (120) may be attached to the user's body using an attachment means such as tape to prevent a change in the position of the air change measurement sensor (120).

[0039] FIG. 2 is a diagram showing examples of temperature change data and respiratory airflow data according to an embodiment of the present invention. FIG. 2 shows temperature change data obtained by measuring and accumulating temperature changes in air according to inhalation and exhalation of a user's body organs using a temperature sensor, and respiratory airflow data measured using a conventional respiratory airflow measurement method, respectively. FIG. 2 shows that the pattern of the temperature change data and the pattern of the respiratory airflow data are almost identical, and thus the user's respiratory airflow can be measured using the temperature change data. Humidity change data obtained by measuring and accumulating humidity changes in the air using a humidity sensor also shows a pattern similar to the respiratory airflow data.

[0040] FIG. 3 is a diagram illustrating an example of the internal configuration of a respiratory air measurement system according to an embodiment of the present invention, and FIG. 4 is a flowchart illustrating an example of a respiratory air measurement method according to an embodiment of the present invention. The respiratory air measurement system (300) according to the present embodiment may include a circuit unit (110) and an air change measurement sensor (120) as described above. At this time, the circuit unit (110) may include a control unit (310), a communication unit (320), a power unit (330), and a sensor driver (340) as illustrated in FIG. 3. The power unit (330) may provide power required for the control unit (310), the communication unit (320), and the sensor driver (340), and the control unit (310) may control the operations of the communication unit (320), the power unit (330), and the sensor driver (340). In addition, an application linked to a respiratory flow measurement system (300) may be installed and operated in the external device (140). In this case, the external device (140) may receive measurement data by communicating with the communication unit (320) of the circuit unit (110) under the control of the application, and based on the received measurement data, may display at least one of a waveform graph of air change data (temperature change data and / or humidity change data), a waveform graph of respiratory flow data, the user's respiratory rate, and whether the user is experiencing apnea on the display, and may provide the user with an alarm according to the user's respiratory rate and / or whether the user is experiencing apnea.

[0041] In step (410), the circuit unit (110) can operate the air change measurement sensor (120) to measure changes in the air (temperature change and / or humidity change) caused by the user's inhalation and exhalation. To this end, the air change measurement sensor (120) can include a temperature sensor and / or a humidity sensor. For example, the circuit unit (110) can be attached to the user's body as described above, and the air change measurement sensor (120) can be placed around the user's body organ (e.g., the user's nose or mouth) where inhalation and exhalation occur while being connected to the circuit unit (110). In a more detailed example, the control unit (310) included in the circuit unit (110) can continuously measure changes in the air by controlling the air change measurement sensor (120) through the sensor driving unit (340), and at this time, changes in the air caused by inhalation and exhalation can be measured through the air change measurement sensor (120). Information on changes in air measured by the air change measurement sensor (120) can be transmitted to the control unit (310) through the sensor driving unit (340).

[0042] In step (420), the circuit unit (110) can transmit information about changes in the air measured by the air change measurement sensor (120) to an external device (140) or measure the user's respiratory flow based on the information about changes in the air. For example, a first algorithm for measuring respiratory flow can be included in the circuit unit (110) or the external device (140). If the first algorithm is included in the external device (140), the circuit unit (110) can transmit information about changes in the air measured by the air change measurement sensor (120) to the external device (140) through the communication unit (320). In this case, the external device (140) can measure the user's respiratory flow using the transmitted information about changes in temperature and the first algorithm. If the first algorithm is included in the circuit unit (110), the circuit unit (110) can measure the user's respiratory flow using the first algorithm and the information about changes in the air measured by the air change measurement sensor (120). The first algorithm may include an algorithm for generating respiratory airflow data based on accumulated air change data measured by the air change measurement sensor (120). As previously described, the air change data may include temperature change data and / or humidity change data.

[0043] In step (430), if the circuit unit (110) measures the respiratory flow in the circuit unit (110), information about the measured respiratory flow can be transmitted to an external device (140). At this time, the external device (140) may include a second algorithm for determining the user's respiratory rate and / or apnea based on the user's respiratory flow data. In this case, the external device (140) may determine the user's respiratory rate and / or apnea using the user's respiratory flow and the second algorithm.

[0044] In addition, if the first algorithm is included in the circuit unit (110) according to an embodiment, the second algorithm may also be included in the circuit unit (110). In this case, the circuit unit (110) may determine the user's respiratory rate and / or whether or not the user is experiencing apnea using the respiratory flow data obtained through the first algorithm and the second algorithm. At this time, the circuit unit (110) may transmit air change data, respiratory flow data, information on the user's respiratory rate and / or whether or not the user is experiencing apnea to the external device (140).

[0045] As previously described, in each embodiment, the external device (140) may display at least one of a waveform graph of air change data, a waveform graph of respiratory data, a user's respiratory rate, and whether the user is experiencing apnea on a display included in the external device (140), and may provide the user with an alarm based on the user's respiratory rate and / or whether the user is experiencing apnea. For example, the external device (140) may output an alarm in various ways, such as by light, sound, and / or vibration.

[0046] Additionally, depending on the embodiment, the respiratory flow measurement system (300) may further include additional sensors (350), such as an oxygen saturation sensor for measuring the user's oxygen saturation and / or a motion sensor for measuring the user's motion. The oxygen saturation and / or the user's motion measured through these additional sensors (350) may be further utilized to determine the user's respiratory flow, respiration rate, and / or apnea. For example, the motion sensor may include a gyroscope and / or an accelerometer.

[0047] Communication between the communication unit (320) and the external device (140) can be achieved using at least one of various communication protocols that are already well known, such as BLE (Bluetooth Low Energy), NFC (Near Field Communication), WiFi, etc.

[0048] Meanwhile, the external device (140) may be implemented by, for example, a computer device.

[0049] FIG. 5 is a block diagram illustrating an example of a computer device according to an embodiment of the present invention. As illustrated in FIG. 5, the computer device (Computer device) 500 may include a memory (Memory) 510, a processor (Processor) 520, a communication interface (Communication interface) 530, and an input / output interface (I / O interface) 540. The memory (510) is a computer-readable recording medium and may include a random access memory (RAM), a read only memory (ROM), and a permanent mass storage device such as a disk drive. Here, the permanent mass storage device such as the ROM and the disk drive may be included in the computer device (500) as a separate permanent storage device distinct from the memory (510). In addition, the memory (510) may store an operating system and at least one program code. These software components may be loaded into the memory (510) from a computer-readable recording medium separate from the memory (510). This separate computer-readable recording medium may include a computer-readable recording medium such as a floppy drive, a disk, a tape, a DVD / CD-ROM drive, a memory card, etc. In another embodiment, the software components may be loaded into the memory (510) via a communication interface (530) other than a computer-readable recording medium. For example, the software components may be loaded into the memory (510) of the computer device (500) based on a computer program installed by files received via a network (Network, 560).

[0050] The processor (520) may be configured to process instructions of a computer program by performing basic arithmetic, logic, and input / output operations. Instructions may be provided to the processor (520) via the memory (510) or the communication interface (530). For example, the processor (520) may be configured to execute instructions received according to program code stored in a storage device such as the memory (510).

[0051] The communication interface (530) may provide a function for the computer device (500) to communicate with other devices via a network (560). For example, requests, commands, data, files, etc. generated by the processor (520) of the computer device (500) according to program codes stored in a recording device such as a memory (510) may be transmitted to other devices via the network (560) under the control of the communication interface (530). Conversely, signals, commands, data, files, etc. from other devices may be received by the computer device (500) via the communication interface (530) of the computer device (500) via the network (560). Signals, commands, data, etc. received via the communication interface (530) may be transmitted to the processor (520) or the memory (510), and files, etc. may be stored in a storage medium (the aforementioned permanent storage device) that the computer device (500) may further include.

[0052] The input / output interface (540) may be a means for interfacing with an input / output device (I / O device, 550). For example, the input device may include a device such as a microphone, a keyboard, or a mouse, and the output device may include a device such as a display or a speaker. As another example, the input / output interface (540) may be a means for interfacing with a device that integrates input and output functions, such as a touchscreen. The input / output device (550) may also be configured as a single device with the computer device (500).

[0053] Additionally, in other embodiments, the computer device (500) may include fewer or more components than those illustrated in FIG. 5 . However, it is not necessary to explicitly illustrate most conventional components. For example, the computer device (500) may be implemented to include at least some of the input / output devices (550) described above, or may further include other components such as a transceiver, a database, and the like.

[0054] In this way, according to embodiments of the present invention, a method and system for measuring respiratory airflow by measuring changes in air can be provided. The method and system for measuring respiratory airflow according to embodiments of the present invention can measure a user's respiratory airflow based on changes in air (temperature changes in air and / or humidity changes in air) caused by the user's inhalation and exhalation using an air change measurement sensor and / or a humidity sensor, thereby eliminating user discomfort by not requiring a tube to be inserted or a mask to be worn.

[0055] The systems or devices described above may be implemented as hardware components, or a combination of hardware components and software components. For example, the devices and components described in the embodiments may be implemented using one or more general-purpose computers or special-purpose computers, such as, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate array (FPGA), a programmable logic unit (PLU), a microprocessor, or any other device capable of executing instructions and responding to them. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to the execution of the software. For ease of understanding, the processing device is sometimes described as being used alone; however, one of ordinary skill in the art will recognize that the processing device may include multiple processing elements and / or multiple types of processing elements. For example, a processing unit may include multiple processors, or a processor and a controller. Other processing configurations, such as parallel processors, are also possible.

[0056] Software may include a computer program, code, instructions, or a combination of one or more of these, which may configure a processing device to perform a desired operation or may independently or collectively command the processing device. The software and / or data may be embodied in any type of machine, component, physical device, virtual equipment, computer storage medium, or device for interpretation by the processing device or for providing instructions or data to the processing device. The software may also be distributed over networked computer systems and stored or executed in a distributed manner. The software and data may be stored on one or more computer-readable recording media.

[0057] The method according to the embodiment may be implemented in the form of program commands that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program commands, data files, data structures, etc., singly or in combination. The medium may continuously store a computer-executable program, or may temporarily store it for execution or download. In addition, the medium may be various recording means or storage means in the form of a single or multiple hardware combinations, and is not limited to a medium directly connected to a computer system, but may also be distributed over a network. Examples of the medium may include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical recording media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, and those configured to store program commands, including ROM, RAM, and flash memory. In addition, examples of other media may include recording media or storage media managed by app stores that distribute applications, sites that supply or distribute various software, servers, etc. Examples of program instructions include machine language code, such as that produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc.

[0058] Although the embodiments described above have been described by way of limited examples and drawings, those skilled in the art will appreciate that various modifications and variations can be made based on the above teachings. For example, appropriate results can still be achieved even if the described techniques are performed in a different order than described, and / or components of the described systems, structures, devices, circuits, etc. are combined or combined in a different manner than described, or are replaced or substituted with other components or equivalents.

[0059] Therefore, other implementations, other embodiments, and equivalents to the claims also fall within the scope of the claims set forth below.

Claims

1. An air change measurement sensor that is placed around the user's body organs where inhalation and exhalation occur according to the user's breathing, and measures the change in air according to the inhalation and exhalation; and A circuit part attached to the user's body and connected to the air change measuring sensor so that the air change measuring sensor is placed around the body organ and receives information about changes in the air measured by the air change measuring sensor. Including, The user's respiratory flow is measured based on information about the changes in the air above. A respiratory flow measurement system characterized by:

2. In paragraph 1, The change in air according to the above inhalation and exhalation includes at least one of a change in temperature and a change in humidity of the air according to the above inhalation and exhalation, The above air change measurement sensor includes at least one of an air change measurement sensor and a humidity sensor. A respiratory flow measurement system characterized by:

3. In paragraph 1, A respiratory flow measurement system characterized in that the circuit unit measures the user's respiratory flow based on information about changes in the air.

4. In paragraph 1, A respiratory flow measurement system characterized in that the circuit unit transmits information about changes in the air to an external device for measuring the user's respiratory flow.

5. In paragraph 1, A respiratory flow measurement system characterized in that at least one of the user's respiratory rate and apnea is determined based on the respiratory flow in the circuit unit or an external device communicating with the circuit unit.

6. In paragraph 1, The above air change measurement sensor includes a flexible printed circuit board (PCB), The air change measurement sensor is adjusted to be placed around the user's body organ through the flexible PCB. A respiratory flow measurement system characterized by:

7. In paragraph 1, The circuit part is attached to the outer surface of the user's nose, The above air change measurement sensor is connected to the circuit unit and placed in front of the user's nose according to the curvature of the user's nose. A respiratory flow measurement system characterized by:

8. In paragraph 1, The circuit unit transmits at least one of information about changes in the air, the respiratory system, the user's respiratory rate determined based on the respiratory system, and whether the user is experiencing apnea determined based on the respiratory system to an external device. The external device displays at least one of information about changes in the air, the respiratory system, the user's respiratory rate determined based on the respiratory system, and whether the user is experiencing apnea determined based on the respiratory system through a display. A respiratory flow measurement system characterized by:

9. In paragraph 1, At least one sensor among an oxygen saturation sensor for measuring the oxygen saturation of the user and a motion sensor for measuring the motion of the user A respiratory flow measurement system further comprising:

10. In the respiratory flow measurement method of the respiratory flow measurement system, A step of operating an air change measurement sensor further included in the respiratory flow measurement system in a circuit section included in the respiratory flow measurement system to measure changes in air according to inhalation and exhalation of the user according to breathing; A step of transmitting information on changes in air measured by the air change measuring sensor in the circuit unit to an external device or measuring the user's respiratory air based on the information on changes in air; and When the respiratory flow is measured in the above circuit unit, a step of transmitting information about the measured respiratory flow to the external device A method for measuring respiratory flow, including:

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