CN116615140A - Vital capacity meter - Google Patents

Abstract

The invention is characterized in more detail as a spirometer, in that: comprises a main body part and a blowing part which selectively penetrates at least a part of the main body part and is inserted according to the requirement. The main body part comprises an ultrasonic sensor for measuring the flow rate of the flowing fluid through the mouthpiece part; a pressure sensor for measuring the pressure of the flowing fluid through the mouthpiece; and a switch for switching to one of a flow rate measurement mode in which the flow rate of the fluid is measured by the ultrasonic sensor and a pressure measurement mode in which the pressure of the fluid is measured by the pressure sensor.

Description

Spirometer

technical field

The present invention as a spirometer, more particularly relates to a spirometer comprising a flow measurement mode and a pressure measurement mode.

Background technique

The detection of spirometry and heart rate during respiratory examination provides useful information on whether the patient suffers from ventilation disorders and heart disease (myocardial infarction, atrial fibrillation, etc.). Spirometry testing methods can be roughly divided into two types, one of which is the method of directly measuring the change of the lung volume (lungvolume) during the breathing of the examinee, and the other is the method of sensing and detecting the air flow flowing inside and outside the lungs of the examinee during breathing Respiratory airflow measurement methods. In the past, electronic methods were mainly used to measure lung capacity, directly measuring the ability of lung volume change, but recently most of them mainly use the method of measuring respiratory airflow. Respiratory airflow measurement devices such as clinical spirometers in the past are expensive and bulky because they are used in clinics. In fact, it is difficult for patients with chronic respiratory diseases to carry them around and measure respiratory airflow conveniently. In the case of making an electronic spirometer small and portable, the greatest difficulty is miniaturization of sensor elements for respiratory airflow measurement that converts biological variables that cannot be directly measured into measurable physical variables. For conventional pneumotachography, it is necessary to insert a fluid resistance into the breathing path (breathing tube), but miniaturization cannot be achieved with a fluid resistance structure composed of a mesh, capillary, etc. . The turbine-type instrument (tubinometry) also needs to install a rotating turbine on the breathing path (breathing tube), and there are problems of difficulty in miniaturization and inaccuracy.

In order to solve the above problems, Republic of Korea Laid-Open Patent Publication No. 10-2006-0091186 (2006.08.18) discloses a breathing detection and diagnosis device using ultrasonic sensing.

However, in the conventional cases as described above, only the flow velocity or flow rate of the fluid can be measured from the user's breathing, and it is difficult to measure the pressure of the fluid from the user's breathing.

Contents of the invention

technical issues

The present invention is made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a spirometer capable of measuring the flow rate and pressure of a fluid according to a user's respiration in the same flow channel.

The problems to be solved by the present invention are not limited to those mentioned above. Other problems to be solved by the present invention not mentioned here can be clearly understood by those with common knowledge in the technical field to which the present invention belongs from the following description.

problem solving

A spirometer according to an embodiment of the present invention is characterized by comprising a main body, and a mouthpiece selectively inserted through at least a part of the main body as needed. The above-mentioned main body includes an ultrasonic sensor for measuring the flow rate of the fluid flowing through the mouthpiece; a pressure sensor for measuring the pressure of the fluid flowing through the mouthpiece; and a flow measurement mode for measuring the flow rate of the fluid through the ultrasonic sensor. In the pressure measurement mode in which the pressure sensor measures the pressure of the fluid, switch to one of them.

In addition, the above-mentioned ultrasonic sensor according to an embodiment of the present invention is characterized in that there are a plurality of them, and when the mouthpiece is inserted into the main body, the mouthpiece is provided on both sides based on the mouthpiece.

In addition, the plurality of ultrasonic sensors according to an embodiment of the present invention are characterized in that: they include an ultrasonic sensor disposed at the upper end of one side with the mouthpiece as a reference, and an ultrasonic sensor disposed at the lower end of the other side, and the mouthpiece with the mouthpiece Based on the longitudinal axis of , they are arranged along an imaginary line formed by inclination.

In addition, the above-mentioned main body part according to the embodiment of the present invention is characterized in that: it also includes an insertion hole for inserting the above-mentioned mouthpiece part; the above-mentioned switch is formed to be able to move linearly perpendicular to the length direction of the above-mentioned insertion hole. When one end of the mouthpiece is open, it is set to the above-mentioned flow measurement mode, and when it moves to the other side and one end of the above-mentioned mouthpiece is closed, it is set to the above-mentioned pressure measurement mode.

In addition, according to the embodiment of the present invention, it is characterized in that: it also includes sending and storing the measurement values of the above-mentioned ultrasonic sensor and pressure sensor in real time, analyzing the breathing of the user based on the above-mentioned measurement values, and providing the above-mentioned user with a suitable exercise schedule a control unit; and a display unit that outputs the analysis result of the control unit and the exercise schedule.

In addition, the above-mentioned mouthpiece part according to the embodiment of the present invention is characterized in that it includes a space formed inside, and an open and rectangular mouthpiece body is formed on the upper and lower sides, respectively formed on one side of the mouthpiece body and the other side of the mouthpiece body. The ultrasonic membrane at the lower end of the side; it is arranged on one side of the main body of the mouthpiece, so that the fluid flowing due to the user's breathing can flow to the pressure sensing hole of the pressure sensor; and it is formed in a shape corresponding to the pressure sensing hole, and can The filter part is removed from the pressure sensing hole.

In addition, the above-mentioned main body part according to an embodiment of the present invention is characterized in that: it is formed to have an elliptical cross-section; the above-mentioned mouthpiece part includes a cover part covering at least a part of the above-mentioned mouthpiece part, and the above-mentioned cover part is installed on the above-mentioned body when not in use. In order to prevent external foreign matter from flowing into the inside of the mouthpiece, the cover is separated from the main body during use, and the flow rate or pressure of the fluid flowing through the mouthpiece can be measured.

The effect of the invention

According to the solution to the above problems, the spirometer of the present invention has the advantage of measuring the flow and pressure of the fluid caused by the user's breathing on the same flow channel by switching the measurement mode without replacing the mouthpiece.

In addition, in the spirometer of the present invention, the ultrasonic sensor is disposed adjacent to the outer side of the ultrasonic membrane forming at least a part of the outer peripheral surface of the mouthpiece body to measure the flow rate without affecting the fluid flowing due to the user's breathing, thereby having a more accurate Advantages of accurately measuring the user's respiratory flow.

In addition, in the spirometer of the present invention, it is advantageous in that not only the flow rate is measured by accurate flow rate in a wide range of flow rate, but also since there is almost no breathing resistance due to the non-contact measurement method, the breathing volume detection of patients or young children There will be no problems; and the volume of the measurement part required to measure the breathing volume should be minimized, so that the dead space that causes the patient to inhale the exhausted air again is minimized, and the health of the person being measured will not be affected; according to the measurement of the flow rate, the When calculating the respiratory volume, using existing clinical data and other information, it can immediately and accurately measure various respiratory volume-related measurement values such as FVC (Forced Expiratory Vital Capacity), PEF (Peak Expiratory Flow), and FEV (Forced Expiratory Volume).

In addition, the spirometer of the present invention has the advantages of being easy to separate and clean, easy to carry, and can perform self-measurement centered on the user without being limited by time and place.

The effects of the present invention are not limited to the effects described above, and the effects of the present invention not mentioned here can be clearly understood from the following description by a person having ordinary knowledge in the technical field to which the present invention pertains.

Description of drawings

Fig. 1 is a perspective view showing the structure of a spirometer according to a first embodiment of the present invention.

2( a ) and ( b ) are perspective views showing the mouthpiece structure of the spirometer according to the first embodiment of the present invention, and FIG. 3( c ) is a plan view.

Fig. 3 is a sectional view showing the structure of a spirometer according to a first embodiment of the present invention.

Fig. 4 is an enlarged view showing the construction of an ultrasonic sensor and a pressure sensor of the spirometer according to the first embodiment of the present invention.

Fig. 5 is a drawing showing the inside of the mouthpiece body of the spirometer according to the first embodiment of the present invention.

Fig. 6 is a sectional view showing switch movement of the spirometer according to the first embodiment of the present invention.

Fig. 7 is a sectional view showing switch movement of the spirometer according to the first embodiment of the present invention.

Fig. 8 is a sequence diagram showing a control flow of the spirometer according to the first embodiment of the present invention.

Fig. 9 is a drawing showing the appearance of the display of the spirometer according to the first embodiment of the present invention.

Fig. 10 is a drawing showing the appearance of the display of the spirometer according to the first embodiment of the present invention.

Fig. 11 is a drawing showing the appearance of the display of the spirometer according to the first embodiment of the present invention.

Fig. 12 is a drawing showing the appearance of the display of the spirometer according to the first embodiment of the present invention.

(a) of FIG. 13 is a front view showing the detachable structure of the cover part of the spirometer according to the second embodiment of the present invention.

(b) of FIG. 13 is a front view showing the detachable structure of the filter part of the spirometer according to the second embodiment of the present invention.

Fig. 14 is a sectional view showing the structure of a spirometer according to a second embodiment of the present invention.

Fig. 15 is a front view showing the structure of a spirometer according to a third embodiment of the present invention.

Fig. 16 is a sectional view showing the structure of a spirometer according to a third embodiment of the present invention.

Detailed ways

The terms used in this specification are briefly explained, and the present invention is specifically described.

The terms used in the present invention consider the functions of the present invention and select general terms that are currently widely used, but this may vary depending on the intention or case of those skilled in the art, the emergence of new technologies, and the like. Therefore, the terms used in the present invention should not be pure term names, but should be defined according to the meanings of the terms and the entire content of the present invention.

Throughout the specification, when a certain part "includes" a certain constituent element, it means that other components are not excluded, but more other components may be included, unless there is a particularly objectionable statement.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that those who have common knowledge in the technical field to which the present invention pertains can easily implement. However, the present invention can be implemented in various forms, and is not limited to the embodiments described here.

Specific matters such as problems to be solved by the present invention, means for solving problems, effects of the invention, etc. are included in the following examples and drawings. The advantages and features of the present invention, as well as the method of realizing them, can be clarified with reference to the attached drawings and detailed embodiments.

The invention will be explained in more detail below with reference to the attached drawings.

Referring to FIG. 1 , a spirometer according to a preferred first embodiment of the present invention includes a main body 100 and a mouthpiece 200 selectively inserted through at least a part of the main body 100 as needed. The main body 100 includes an ultrasonic sensor 110 for measuring the flow rate of the flowing fluid through the mouthpiece 200 ; a pressure sensor 120 for measuring the pressure of the flowing fluid through the mouthpiece 200 ; and measuring the flow rate of the fluid through the ultrasonic sensor 110 Switch 130 to one of the flow measurement mode and the pressure measurement mode for measuring the pressure of the fluid through the pressure sensor 120 .

First, the above-mentioned main body portion 100 is provided. Referring to FIG. 1 , an example is that the main body 100 forms a space inside and has a rectangular shape, which serves as a housing for protecting the ultrasonic sensor 110 and the pressure sensor 120 disposed inside. That is, the main body part 100 separates the structure provided inside the main body part 100 from the outside, and has a function of preventing external foreign matter from penetrating into the inside. In this case, the outer peripheral surface of the main body portion 100 may be formed in a circular shape in order to facilitate the user to grasp it.

Next, the above-mentioned mouthpiece part 200 was provided. An example is, with reference to Fig. 2, the above-mentioned mouthpiece part 200 can form a space in the interior, above and below form a mouthpiece body 210 with an open shape and a rectangular shape; The ultrasonic membrane 220 at the lower end of one side; and the pressure sensing hole 210 arranged on one side of the mouthpiece main body 210 .

The mouthpiece main body 210 is inserted into the insertion hole 140 described later to measure the breathing of the user. One end of the mouthpiece main body 210 is formed with a step difference so that the user can breathe on the mouth. In this case, the mouthpiece main body 210 may be formed in a circular shape in order to facilitate the user to hold the mouthpiece body 210 .

In addition, the ultrasonic membrane 220 is formed so that the fluid flowing due to the breathing of the user cannot pass, but ultrasonic waves can pass therethrough. That is, the fluid flowing due to the breathing of the user flows along the longitudinal direction of the mouthpiece body 210 and cannot pass through the ultrasonic membrane 220 .

In addition, the pressure sensing hole 230 is formed to be separated from the ultrasonic membrane 220 , and the fluid flowing due to the breathing of the user can flow to the pressure sensor 120 through the pressure sensing hole 230 . At this time, the mouthpiece 200 is detachable on the pressure sensing hole 230, and the fluid flowing due to the user's breathing can also include a filter (not shown) in order to be filtered when passing through the pressure sensing hole 230. icon). In other words, the filter part is formed in a shape corresponding to the pressure sensing hole 230 , is combined to be inserted into the pressure sensing hole 230 , and filters foreign matter inside the fluid passing through the pressure sensing hole 230 . Reduce the risk of infection with regard to infectious diseases such as COVID-19.

Here, the main body 100 includes the ultrasonic sensor 110 . The ultrasonic sensor 110 measures the respiratory flow rate of the user based on the difference in arrival time of ultrasonic waves propagating from upstream to downstream and ultrasonic waves propagating from downstream to upstream with respect to air flow caused by the user's respiration.

More specifically, referring to FIG. 3 , the ultrasonic sensors 110 are plural, and when the mouthpiece 200 is inserted into the main body 100 , they are arranged on both sides based on the mouthpiece 200 . At this time, the plurality of ultrasonic sensors 110 include the ultrasonic sensor 110 disposed above the mouthpiece 200 and the ultrasonic sensor 110 disposed below the other side, and are formed along an inclination with the longitudinal axis of the mouthpiece as a reference. The imaginary line arrangement of . In addition, the ultrasonic sensor 110 is provided adjacent to the ultrasonic membrane 220 .

For example, referring to FIGS. 3 and 4 , when the user inhales or exhales through the mouthpiece 200 , the user's breath flows into the mouthpiece 200 . At this time, with reference to the mouthpiece 200, the first ultrasonic sensor 110-1 disposed at the upper end of one side transmits ultrasonic waves to the lower left, and the second ultrasonic sensor 110-2 disposed at the lower end of the other side transmits ultrasonic waves to the upper right. That is, the first ultrasonic sensor 110-1 and the second ultrasonic sensor 110-2 transmit ultrasonic waves in the direction of each other, and measure the arrival time of the transmitted ultrasonic waves. Thereafter, the control unit 300 , which will be described later, obtains the respiratory flow velocity of the user from the measurement values of the first ultrasonic sensor 110 - 1 and the second ultrasonic sensor 110 - 2 .

Referring to FIG. 5 , the principle of obtaining the above-mentioned breathing flow rate of the user will be described in detail. Here, V represents the velocity of the breathing flow of the user to be obtained, L represents the distance between the first ultrasonic sensor 110-1 and the second ultrasonic sensor 110-2, and θ represents the distance between the first ultrasonic sensor 110-1 and the second ultrasonic sensor 110-2. The angle between the second ultrasonic sensors 110-2.

math formula 1

math formula 2

Here, _T1 refers to the time required for the ultrasonic wave transmitted from the second ultrasonic sensor 110-2 to reach the first ultrasonic sensor 110-1, and _T2 means the time required for the ultrasonic wave transmitted from the first ultrasonic sensor 110-1 to reach the first ultrasonic sensor 110-1. In the time required for the above-mentioned second ultrasonic sensor 110-2, C refers to the speed of ultrasonic waves.

math formula 3

Only here, Mathematical Formula 3 is the combination of Mathematical Formulas 1 and 2.

math formula 4

Here, Mathematical Formula 4 is an arrangement of Mathematical Formula 3. That is, as shown in Mathematical Formula 4, by measuring the ultrasonic waves transmitted by the first ultrasonic sensor 110-1 and the second ultrasonic sensor 110-2 in the direction of each other, and by detecting the arrival time of the transmitted ultrasonic waves, the breathing flow of the user can be obtained. and the flow rate can be found by multiplying the resulting velocity by the internal cross-sectional area of the mouthpiece body 210.

At this time, the ultrasonic sensor 110 is provided outside the mouthpiece body 210 to minimize the turbulence of the fluid flowing inside the mouthpiece body 210 by the user's breath, thereby measuring the flow rate more accurately. In other words, conventionally, when measuring the flow rate of the breath, the measurement sensor is installed on the flow channel, thereby disturbing the flow of the breath, and thus there is a problem that accurate measurement cannot be performed. In contrast, the ultrasonic sensor 110 is disposed adjacent to the outer side of the ultrasonic membrane 220 forming at least a part of the outer peripheral surface of the mouthpiece body 210 to measure the flow rate without affecting the fluid flowing by the user's breath. Thereby, there is an advantage that the respiratory flow rate of the above-mentioned user can be measured more accurately.

In addition, the above-mentioned main body unit 100 includes a pressure sensor 120 . The pressure sensor 120 functions to measure the pressure of the fluid flowing through the pressure sensing hole 230 through the breathing of the user.

At this time, the spirometer of the present invention has the advantage of measuring the breathing flow and pressure of the user by using one flow channel of the mouthpiece 200 . That is, the mouthpiece main body 210 forms a single flow channel, and can measure the breathing flow and pressure of the user in the single flow channel.

More specifically, the main body 100 further includes an insertion hole 140 for inserting the mouthpiece 200 , the switch 130 is formed to move linearly perpendicular to the length direction of the insertion hole 140 , and when moved to one side, one end of the mouthpiece 200 is When it is opened, it is set to the above-mentioned flow measurement mode, and when it is moved to the other side and one end of the above-mentioned mouthpiece 200 is closed, it is set to the above-mentioned pressure measurement mode.

The switch 130 functions to close or open either the upper surface or the lower surface of the mouthpiece body 210 . For example, referring to Figures 6 and 7, when the switch 130 is moved to the left, the bottom of the mouthpiece body 210 is in an open state, and when it is moved to the right, the bottom of the mouthpiece body 210 is in a closed state. Here, when the bottom surface of the mouthpiece body 210 is opened, the flow rate measurement mode is set, and the fluid generated by the user's breathing flows from the user's respiratory organs to the mouthpiece body 210 through the inside of the mouthpiece body 210. external. In addition, when the bottom of the mouthpiece body 210 is closed, the pressure measurement mode is set, and the fluid generated by the user's breathing flows out from the user's respiratory organs and stays inside the mouthpiece body 210 . As a result, by switching the measurement mode of the switch 130 without replacing the mouthpiece 200, there is an advantage that the fluid flow rate and pressure caused by the user's breathing can be measured on the same channel.

Next, it also includes receiving and storing the measurement values of the ultrasonic sensor 110 and the pressure sensor 120 in real time, analyzing the user's breathing based on the measurement values and providing the user with a suitable exercise schedule for the control part 300, and outputting the analysis results of the control part 300 and the display unit 400 of an exercise schedule.

Referring to FIG. 8 , the control unit 300 analyzes the breathing of the user based on the measurement values of the ultrasonic sensor 110 and the pressure sensor 120 , and provides a suitable exercise schedule for the user. In addition, the control unit 300 may include a wireless communication module to control the display unit 400 on devices such as the user’s smart phone based on the user’s respiratory information, so as to output exercise schedules, feedback exercise status, and analyze exercise results. , Calorie consumption through breathing exercise and breathing exercise game.

In addition, the display unit 400 plays a role of outputting the analysis result and exercise schedule of the control unit 300 . That is, through the values calculated by the ultrasonic sensor 110 and the pressure sensor 120, the lung capacity of the user can be marked as a digital value, and exercise schedule management, exercise status feedback, exercise result analysis, and breathing exercise games can be output. In addition, the above-mentioned display unit 400 is provided in the form of a touch screen, so that the user can easily perform a respiration measurement or a respiration exercise game.

For example, referring to FIG. 9, when power is applied to the spirometer of the present invention, the above-mentioned display unit 400 can be set to Diagnosis for diagnosis, User for viewing stored user information, Record for viewing the last measurement record, and screen brightness. , volume and time etc. Settings tab.

In addition, referring to Figure 10, if you select the Diagnosis tab above, you can perform tests such as FVC (Forcedexpiratory vital capacity test), FVL (Flow volume loop test), MVV (Maximumvoluntary ventilation test), SVC (Slow vital capacity test) and MIP/ Various respiration measurements such as MEP (MEP). Here, FVC is obtained after maximally forced expiratory volume (Forced vitalcapacity) variables for diagnosis. In addition, Tidal FVC is diagnosed by obtaining the variable of forced vital capacity by breathing gently 2 to 3 times as usual, and exhaling with maximum force after maximal inhalation. In addition, FVL is to exhale as hard as possible after maximal inspiration, and inhale again to the greatest extent, and further obtain the forced inspiratory volume variables (FIVC and PIF) for diagnosis. In addition, Tidal FVL is to breathe gently 2 to 3 times as usual, exhale with maximum force after maximum inhalation, and inhale again to the maximum extent, and further obtain forced inspiratory volume variables (FIVC and PIF) for diagnosis. In addition, MIP/MEP is the measurement of maximum inspiratory pressure (MIP) and maximum expiratory pressure (MEP) during inhalation or exhalation. In addition, MVV is the maximum inhalation followed by the rapid repetition of the maximum exhalation within 12 seconds to calculate the maximum ventilation volume per minute. In addition, the SVC breathes gently 3 to 5 times as usual, and then slowly inhales to the maximum extent and exhales to the maximum extent to measure the lung volume and so on. For example, Figure 11 and Figure 12 show the results of the MIP/MEP assay. Here, the green dotted line on the graph represents the average value for a normal person, and the red dotted line represents the warning value. In addition, the lights installed on the right side of the MIP crossbar and MEP crossbar can turn red light into green light when the above-mentioned user's breathing deviation is within 10% for three consecutive times.

Hereinafter, a spirometer according to a second preferred embodiment of the present invention will be described in detail with reference to the drawings. In this embodiment, there is a difference in that the main body portion 102 is formed in an oval shape compared with the first embodiment. In this embodiment, the configuration overlapping with that of the first embodiment refers to the description of the first embodiment.

Referring to FIG. 13 and FIG. 14 , the main body 102 may be formed in an oval shape for easy grip. At this time, referring to FIG. 13( a ), the mouthpiece 200 includes a cover 211 covering at least a part of the mouthpiece 200 . That is, the cover part 211 is attached to the main body part 102 so as to wrap the end part of the mouthpiece main body 210 . In other words, the cover part 211 is detachably formed on the main body part 102, and the user can separate the cover part 211 from the main body part 102 and measure respiration. Therefore, when not in use, the above-mentioned cover part 211 is installed on the above-mentioned main body part 102 to prevent external foreign matter from flowing into the inside of the above-mentioned mouthpiece main body 210. The flow rate or pressure of the fluid flowing through the mouthpiece 200 . At this time, if the cover part 211 can be detachable from the main body part 102, then it can be formed in any form, for example, a spiral groove that can detach the above-mentioned cover part 211 is provided on the top of the above-mentioned main part 102, and a screw groove is provided in the inside of the above-mentioned cover part. A protrusion corresponding to the above-mentioned spiral groove is provided on the peripheral surface, and the above-mentioned cover part 211 can be installed by rotating after being placed at a position adjacent to the upper part of the main body part 102 .

In addition, the mouthpiece part 200 may further include a filter part 240 connected to one side of the mouthpiece body 210 , and a filter mouthpiece body 250 connected to an end of the filter part 240 . The filter unit 240 can perform more accurate respiration measurement by filtering foreign substances in the fluid flowing due to the user's respiration. For example, one end of the filter part 240 is configured to be connectable to the mouthpiece body 210 , and the other end is configured to be connectable to the filter mouthpiece body 250 , which can be selectively assembled as required.

Hereinafter, a spirometer according to a third preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In this embodiment, compared with the first embodiment, there is a difference in that the insertion hole 140 is formed to penetrate through the middle of the main body portion 103 . In this embodiment, the configuration overlapping with that of the first embodiment refers to the description of the first embodiment.

Referring to FIG. 15 and FIG. 16 , the above-mentioned insertion hole 140 is formed to pass through the middle of the main body portion 103 . That is, the mouthpiece main body 210 is inserted into the insertion hole 143 formed to pass through the middle of the main body part 100 . Therefore, there are advantages in that the main body part 103 can be easily grasped with a sense of balance, and the mouthpiece part 200 can be easily coupled to the main body part 103 .

In addition, the main body part 103 includes a placement part 260 protruding outward from the inner peripheral surface of the main body part 103 , and the placement part 260 includes the ultrasonic sensor 110 . That is, the placement portion 260 is formed at a position corresponding to the ultrasonic sensor 110 , and the ultrasonic sensor 110 does not interfere with the outer peripheral surface of the mouthpiece main body 210 . In other words, when the mouthpiece main body 210 is inserted into the insertion hole 140 , in order to prevent the outer peripheral surface of the mouthpiece main body 210 from interfering with the ultrasonic sensor 110 , the sinking length of the placement portion 260 is longer than the length of the ultrasonic sensor 110 in the longitudinal direction. longer. Therefore, there is an advantage that the flow and pressure of the user's breath can be measured more accurately.

As described above, it can be understood that practitioners in the technical field to which the present invention pertains can implement it in different forms without changing the technical idea or essential features of the present invention.

Therefore, the above-described embodiments are exemplary and not limiting in all aspects, and the scope of the present invention is embodied by the patent claims described later rather than the above detailed description. The meaning and scope of the patent claims and their equivalents All changes or modifications derived from the concept of valence are included within the scope of the present invention.

Claims (7)

1. A spirometer, characterized in that it includes a main body, and a mouthpiece selectively inserted through at least a part of the main body as required, and the main body includes an ultrasonic sensor for measuring the flow rate of fluid flowing through the mouthpiece; A pressure sensor for measuring the pressure of the flowing fluid through the mouthpiece; and switching to one of the flow measurement mode for measuring the flow rate of the fluid with the ultrasonic sensor and the pressure measurement mode for measuring the pressure of the fluid with the pressure sensor switch. 2. The spirometer according to claim 1, wherein a plurality of the ultrasonic sensors are provided on both sides of the mouthpiece when the mouthpiece is inserted into the main body. 3. The spirometer according to claim 2, wherein the plurality of ultrasonic sensors include an ultrasonic sensor arranged at the upper end of one side with reference to the mouthpiece, and an ultrasonic sensor arranged at the lower end of the other side, and Based on the longitudinal axis of the mouthpiece, they are arranged along a virtual line formed obliquely. 4. The spirometer according to claim 1, wherein the main body further includes an insertion hole for inserting into the mouthpiece; the switch is formed to move linearly perpendicular to the length direction of the insertion hole, When it is moved and one end of the mouthpiece is open, it is set to the flow measurement mode, and when it is moved to the other side and one end of the mouthpiece is closed, it is set to the pressure measurement mode. 5. The spirometer according to claim 1, further comprising: sending and storing the measured values of the above-mentioned ultrasonic sensors and pressure sensors in real time, analyzing the breathing of the user based on the above-mentioned measured values, and providing the user with a control unit for an appropriate exercise schedule; and a display unit for outputting the analysis result of the control unit and the exercise schedule. 6. The spirometer according to claim 1, characterized in that: it includes a space formed inside, and a mouthpiece body in an open shape and a rectangular shape is formed above and below; it is respectively formed at the upper end of one side of the mouthpiece body and the other side of the mouthpiece body. The ultrasonic membrane at the lower end of the side; it is arranged on one side of the main body of the mouthpiece, so that the fluid flowing due to the user's breathing can flow to the pressure sensing hole of the pressure sensor; and it is formed in a shape corresponding to the pressure sensing hole, and can The filter part is removed from the pressure sensing hole. 7. The spirometer according to claim 1, wherein: the main body is formed to have an elliptical cross section; the mouthpiece includes a cover that covers at least a part of the mouthpiece, and the cover when not in use The part is installed on the above-mentioned body to prevent external foreign matter from flowing into the inside of the above-mentioned mouthpiece, and the above-mentioned cover part is separated from the above-mentioned main body during use, and the flow rate or pressure of the fluid flowing through the above-mentioned mouthpiece can be measured.