Lumen volume sensing device and application thereof in breath training

Abstract

The invention discloses a lumen volume sensing device and application thereof in breath training, and belongs to the field of respiratory flow measuring devices, the lumen volume sensing device is characterized in that an annular moving plate capable of sliding in an attached mode is arranged in a tube body, and the annular moving plate is provided with a hollow conical barrel extending towards an inlet of the tube body; the annular moving plate slides on a guide sliding rod through a guide sleeve, the guide sliding rod is fixed to a bottom cover, and the bottom cover is connected to the tail end of the pipe body. A reset spring is arranged between the guide sliding rod and the end face of the annular moving plate. A plurality of arc-shaped pieces are arranged between the annular moving plate and the pipe body, arc-shaped piece contacts are arranged on the end faces, facing the inner wall of the pipe body, of the arc-shaped pieces in pairs, conductive sleeves are arranged at the positions, corresponding to the arc-shaped piece contacts, of the pipe body, the arc-shaped piece contacts arranged in pairs are connected with a controller through wires, and an indicator lamp is arranged on the controller. The change of the volume of gas in the pipe can be detected, and signal acquisition and mutual correction are ensured while stable movement of the structure is ensured.

Description

Technical Field

[0001] The present application belongs to the field of devices for measuring respiratory flow, and more specifically, to a lumen volume sensing device and its application in breath training. Background Art

[0002] The measurement of vital capacity in the prior art mainly includes the following methods: See the patent document with Chinese patent announcement number CN214965561U, which discloses an expiratory spirometer and specifically discloses the following technical content: It is composed of a cubic structure, which holds an inverted bottle through a support, and the outlet of the inverted bottle has a valve-controlled dripping device; an exhalation nozzle is arranged at the center of one side of the cubic structure, so that when the user exhales air through it, the speed of the exhaled air is transmitted to the fluid droplet. When this drop of colored liquid falls into the detachable and replaceable recording device, it determines the distance indicating the exhaled air speed. The side of the cubic structure is covered with a transparent material to avoid distortion in the measurement of the exhaled air speed and volume flow.

[0003] The above structure uses the transmission method of exhaled air and fluid drops, and drops of colored drops fall into a detachable and replaceable recording device to determine the distance indicating the exhaled air speed. The above structure is prone to large errors and is not easy to determine the accuracy of vital capacity.

[0004] At the same time, the prior art also provides a patent document such as Chinese Patent Publication No. CN116269299A, which discloses a method and device for measuring forced expiratory volume in one second based on millimeter wave radar, and specifically discloses the following technical content: the method includes: using millimeter wave radar to collect echo data of human body for lung function test; extracting breathing signal from the echo data, and intercepting signal segments of forced exhalation process from the breathing signal; finding key points in the signal segments of the forced exhalation process, and calculating the relative value of forced vital capacity and the relative value of one second volume based on the key points; based on the relative value of forced vital capacity, the relative value of one second volume, and body feature data, calculating the forced expiratory volume of human body in one second. In the embodiment of the present invention, combined with the low cost, small size, and non-privacy of millimeter wave radar, by receiving the echo signal reflected from the human body, it can sense the movement of the human body surface in a non-contact manner, thereby realizing low-cost, convenient, and non-contact measurement of the forced expiratory volume of human body in one second.

[0005] However, the applicant believes that the above structure is relatively complex and also adopts the form of indirect measurement (millimeter wave radar collects echo signals). Although it can improve accuracy to a certain extent, its signal capture and processing are relatively complex and are not suitable for use in daily detection. Summary of the invention

[0006] The purpose of the present application is to provide a tubular volume sensing device and its application in breath training, which can detect the change of the volume of gas in the tube, and ensure the acquisition and mutual correction of signals while ensuring the stable movement of the structure.

[0007] To achieve the above objectives, this application is implemented through the following technical solutions: A tubular cavity volume sensing device described in the present application includes a tubular body, wherein a sliding annular movable plate is arranged inside the tubular body, wherein the annular movable plate is an annular plate body, and a hollow conical cylinder is integrally arranged at the inner edge of the annular movable plate, wherein the hollow conical cylinder extends toward the entrance of the tubular body; a guide sleeve is arranged on the end face of the annular movable plate away from the hollow conical cylinder, wherein the guide sleeves are evenly distributed on the annular movable plate around the central axis of the annular movable plate; wherein the guide sleeves extend in a direction away from the annular movable plate, and wherein the guide sleeves are arranged on the guide sleeves; ... A guide slide bar is provided for internal sliding of the sleeve, and the guide slide bar is fixed on the bottom cover, and the bottom cover is connected to the tail end of the tube body; a return spring is provided between the end face of the guide slide bar away from the bottom cover and the end face of the annular movable plate; a plurality of arc-shaped sheets are provided between the annular movable plate and the tube body, and the arc-shaped sheets are provided with arc-shaped sheet contacts in pairs on the end faces facing the inner wall of the tube body, and the tube body is provided with a conductive sleeve at the position corresponding to the arc-shaped sheet contacts, and the paired arc-shaped sheet contacts are respectively connected to the controller through wires, and the controller has an indicator light.

[0008] As one of the preferred technical solutions, in the present application, the bottom end of the arc-shaped piece is connected to the bottom cover through an arc-shaped piece connecting seat, and the top end of the arc-shaped piece is connected to the inner wall of the annular movable plate through a conical cylinder base frame.

[0009] As one of the preferred technical solutions, in the present application, the guide slide rod is provided with a plurality of linear grooves distributed on the circumferential side wall, carbon film resistors are placed in the linear grooves, and the guide sleeve is provided with a conductive limit end corresponding to the carbon film resistor at the entrance end, and the conductive limit end and the carbon film resistor are respectively connected to the controller through wires.

[0010] As one of the preferred technical solutions, in the present application, the arc-shaped sheet is processed with an arc-shaped sheet groove on the end face away from the arc-shaped sheet contact point, and the length of the arc-shaped sheet groove is the same as the length of the arc-shaped sheet contact point.

[0011] As one of the preferred technical solutions, in the present application, the guide slide rod and the annular movable plate are provided with spring seats at corresponding positions, and the spring seats on the guide slide rod and the annular movable plate are respectively sleeved with the two ends of the return spring.

[0012] As one of the preferred technical solutions, in the present application, the annular moving plate is processed with annular plate grooves on the end surface facing the inlet end of the tube body, and the annular plate grooves are distributed in the circumferential direction of the annular moving plate.

[0013] As one of the preferred technical solutions, in the present application, the tube body has a tapered end of the tube body that cooperates with the hollow conical tube, the closing end of the tapered end of the tube body is integrally arranged with the tube mouth connecting end, the tube mouth connecting end is connected to a flat mouth connecting end, and a flat mouth is integrally arranged on the flat mouth connecting end; the tube body is connected to an exhaust hole on the side close to the bottom cover.

[0014] As one of the preferred technical solutions, in the present application, a gripping sleeve is provided on the circumferential outer wall of the tube body, and the gripping sleeve has an annular groove for the user to grip.

[0015] An application of a lumen volume sensing device in breath training.

[0016] Compared with the prior art, the beneficial effects of this application are: The present application can realize stable movement and stable resetting of the annular movable plate through relative movement between the annular movable plate and the tube body and through mutually cooperating structures. During the process of stable movement and resetting of the annular movable plate, the acquisition and capture of signals can also be realized through mutually cooperating structures without affecting the stable operation of the above-mentioned structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereogram of this application.

[0018] Figure 2 It is a three-dimensional image of the present application after removing the bottom cover.

[0019] Figure 3 yes Figure 2 A partial enlarged view of part I.

[0020] Figure 4 This is the main view of this application.

[0021] Figure 5 yes Figure 4 Cross-sectional view at the position and direction shown by AA.

[0022] Figure 6 yes Figure 5 A partial enlarged view of part II.

[0023] In the figure: 1. bottom cover; 2. exhaust hole; 3. tube body; 4. holding sleeve; 5. tapered end of tube body; 6. tube mouth connecting end; 7. flat mouth connecting end; 8. flat mouth; 9. guide slide rod; 10. carbon film resistor; 11. conductive limit end; 12. guide sleeve; 13. conductive sleeve; 14. spring seat body; 15. reset spring; 16. arc-shaped piece connecting seat; 17. arc-shaped piece; 18. arc-shaped piece contact; 19. annular moving plate; 20. ring plate groove; 21. hollow conical cylinder; 22. conical cylinder base; 23. arc-shaped piece groove. DETAILED DESCRIPTION

[0024] The technical solution described in this application is further described below in conjunction with the accompanying drawings and embodiments. Example 1

[0025] See also Figures 1 to 6 A tubular cavity volume sensing device includes a tubular body 3, which is a hollow cylindrical structure. The top and bottom ends of the tubular body 3 are both open. A bottom cover 1 is connected to the bottom opening of the tubular body 3, and the connection position between the bottom cover 1 and the tubular body 3 is sealed.

[0026] An annular moving plate 19 is slidably disposed inside the tube body 3, and the circumferential outer wall of the annular moving plate 19 is in contact with the inner wall of the tube body 3. A hollow conical cylinder 21 is integrally disposed at the inner edge of the annular moving plate 19, and the hollow conical cylinder 21 extends toward the inlet direction of the tube body 3; the end surface of the annular moving plate 19 away from the hollow conical cylinder 21 is connected to a guide sleeve 12, and the guide sleeve 12 is evenly distributed on the annular moving plate 19.

[0027] A guide slide rod 9 is slidably arranged in the guide sleeve 12, the bottom end of the guide slide rod 9 is fixed on the bottom cover 1, the top end of the guide slide rod 9 extends into the guide sleeve 12, and a return spring 15 is arranged between the top end of the guide slide rod 9 and the end surface of the annular movable plate 19, and the two ends of the return spring 15 are respectively connected to the annular movable plate 19 and the guide slide rod 9 at corresponding positions.

[0028] The annular movable plate 19 is provided with a cone base frame 22 at the middle position, and the annular movable plate 19 is connected to one end of a plurality of arc-shaped sheets 17 through the cone base frame 22, and the other end of the arc-shaped sheets 17 is gathered on the arc-shaped sheet connection seat 16, and is connected to the bottom cover 1 through the arc-shaped sheet connection seat 16. The arc-shaped sheets 17 are evenly distributed around the central axis of the annular movable plate 19, and the arc-shaped sheets 17 have end faces parallel to the inner wall section of the tube body 3, and pairs of arc-shaped sheet contacts 18 are provided at the end face positions, and the paired arc-shaped sheet contacts 18 are respectively connected to the controller through wires, and the inner wall of the tube body 3 is provided with a conductive sleeve 13 at a position corresponding to the arc-shaped sheet contacts 18, and the conductive sleeve 13 is embedded in the inner wall of the tube body 3, and the conductive sleeve 13 is a continuous or discontinuous metal cylinder structure, and the arc-shaped sheet contacts 18 cooperate with the conductive sleeve 13 to form a conductive path in the controller, and light up the indicator light on the controller.

[0029] The arc-shaped sheet 17 is an elastic plate, and an arc-shaped sheet groove 23 of a length adapted to the arc-shaped sheet 17 is processed. The tube body 3 is provided with an exhaust hole 2 at a position away from the entrance, that is, at a position close to the base 1, and the exhaust hole 2 is connected to the space inside the tube body 3. Example 2

[0030] See also Figures 1 to 6 A lumen volume sensing device, wherein the annular moving plate 19 is provided with a plurality of annular plate grooves 20 on the end surface facing the inlet of the tube body 3, and the cross section of the annular plate grooves 20 is arc-shaped. The annular plate grooves 20 are evenly distributed on the annular moving plate 19 and distributed in the circumference of the hollow conical cylinder 21.

[0031] The tube body 3 is integrally provided with a tube body tapered end 5 at the inlet, and the tube body tapered end 5 can cooperate with the hollow tapered cylinder 21 to achieve the function of guiding the airflow.

[0032] The conical end 5 of the tube body is integrally provided with a tube mouth connection end 6 at the inlet end, and the tube mouth connection end 6 has a threaded structure and can be connected to the flat mouth connection end 7 through the threaded structure, and the flat mouth connection end 7 is integrally provided with a flat mouth 8, and the cross section of the flat mouth 8 is a flat rectangular structure. A gripping sleeve 4 is also provided on the outer wall of the tube body 3, and the gripping sleeve 4 can be made of rubber material, and has grooves or patterns for gripping.

[0033] The structures and connection relationships of the remaining parts are the same as those described in Example 1, and will not be described here in detail to avoid cumbersome text. Those skilled in the art can understand the technical solution described in this embodiment based on Example 1. Example 3

[0034] Continue to see Figures 1 to 6 , a lumen volume sensing device, wherein the guide slide bar 9 has a plurality of linear grooves distributed in the circumferential direction, the bottom end of the linear groove passes through the bottom end of the guide slide bar 9, and a certain distance is left between the top end of the linear groove and the top end of the guide slide bar 9. A carbon film resistor 10 is laid at the bottom of the linear groove of the guide slide bar 9 and arranged along the length direction of the linear groove. The carbon film resistor 10 and the conductive limit end 11 are slidably arranged. The conductive limit end 11 is located at the opening position of the guide sleeve 12 and is connected to the guide sleeve 12 through a connector. The connector is connected to the controller through a wire. The carbon film resistor 10 is also electrically connected to the controller. The carbon film resistor 10 and the conductive limit end 11 can form an electrical circuit with resistance change in the controller, and the controller outputs voltages of 0 to 5V through the resistance change, and the relative position of the annular moving plate 19 and the tube body 3 is calibrated according to the different output voltages. The controller adopts a microcomputer controller, which can realize the measurement of loop conduction and the conversion of resistance to voltage, and has a data storage module to compare the obtained signal with the stored signal, and also has a signal output module to output the comparison result.

[0035] The structure and connection relationship of the remaining parts are the same as those described in Example 1 or Example 2, and will not be described here to avoid cumbersome text. Those skilled in the art can understand the technical solution described in this embodiment based on the above embodiments. Example 4

[0036] An application of a lumen volume sensing device as described in Embodiments 1 to 3 in breath training.

[0037] Based on the above embodiments, the following paragraphs will continue to describe in detail the technical features involved and the functions and roles played by the technical features in the present technical solution, so as to help technicians in this field to fully understand the technical solution and reproduce it.

[0038] In the present application, the tube body 3 is a hollow circular cylindrical structure, with both ends of the tube body 3 open and the inner wall of the tube body 3 being a smooth inner wall. The bottom end of the tube body 3 is connected to a bottom cover 1, and the connection position between the bottom cover 1 and the tube body 3 is sealed to ensure the air tightness of the tube body 3. The tube body 3 is connected to an exhaust hole 2 on the circumferential side wall near the bottom cover 1, and the tube body 3 is integrally provided with a tube body tapered end 5 at the inlet, and the tube body tapered end 5 is integrated with the pipe mouth connection end 6, and the pipe mouth connection end 6 is connected to the flat mouth connection end 7 through a threaded structure, and the flat mouth connection end 7 has an integrally provided flat mouth 8.

[0039] In the above structure, the flat mouth 8 of the flat structure can facilitate the operator to send the airflow into the tube body 3, and the threaded connection structure of the flat mouth connection end 7 and the pipe mouth connection end 6 can facilitate the replacement of the flat mouth 8. The conical end 5 of the tube body can cooperate with the hollow conical cylinder 21 arranged inside to guide the airflow to the direction where the annular moving plate 19 is located, and stably promote the movement of the annular moving plate 19 in the tube body 3.

[0040] In the present application, a gripping sleeve 4 may be provided on the outer wall of the tube body 3. The gripping sleeve 4 is made of elastic material, which is convenient for the user to grip and avoids sliding.

[0041] In the present application, the circumferential outer side wall of the annular moving plate 19 is in contact with the inner wall of the tube body 3 and can slide along the inner wall of the tube body 3. The annular moving plate 19 is integrally provided with a hollow conical cylinder 21 at the position of the inner edge, and the hollow conical cylinder 21 cooperates with the conical end 5 of the tube body to guide the airflow entering through the flat nozzle 8 to the position of the annular moving plate 19, and acts on the annular moving plate 19 in a nearly even manner.

[0042] In the present application, the annular moving plate 19 is processed with a plurality of annular plate grooves 20 on the end surface facing the conical end 5 of the tube body, that is, on the end surface in the same extension direction as the hollow conical cylinder 21, and the annular plate grooves 20 are evenly distributed on the annular moving plate 19 around the central axis of the annular moving plate 19. The longitudinal cross-section of the annular plate grooves 20 is an arc structure, and the function of the annular plate grooves 20 is to cooperate with the hollow conical cylinder 21 to realize the airflow acting on the annular moving plate 19, and to increase the contact area between the airflow and the annular moving plate 19, so as to better promote the annular moving plate 19 to move in the tube body 3.

[0043] In the present application, the annular movable plate 19 is connected to a plurality of guide sleeves 12 at the end surface away from the hollow conical cylinder 21, and the guide sleeves 12 are evenly distributed around the central axis of the annular movable plate 19. A guide slide bar 9 is slidably arranged inside the guide sleeve 12, and the guide slide bar 9 is mounted on the bottom cover 1. A return spring 15 is arranged between the top end of the guide slide bar 9 extending into the guide sleeve 12 and the corresponding end surface of the annular movable plate 19, and the two ends of the return spring 15 are respectively connected to the guide slide bar 9 and the annular movable plate 19.

[0044] A spring seat 14 is fixed to the top of the guide slide bar 9 and the end surface of the annular movable plate 19 located in the guide sleeve 12, and the spring seat 14 is sleeved with both ends of the reset spring 15. The above structure can provide a reset force for the guide sleeve 12 and the guide slide bar 9, and provide support for the stable movement of the annular movable plate 19 when the annular movable plate 19 moves relative to the tube body 3, and provide a force for the reset movement of the annular movable plate 19.

[0045] In the present application, the guide slide bar 9 can be processed with a plurality of linear grooves in the circumferential direction, and the bottom end of the linear groove passes through the bottom end of the guide slide bar 9 (that is, the connecting end face of the guide slide bar 9 and the bottom cover 1), and a sufficient distance is left between the top end of the linear groove and the top end of the guide slide bar 9 (that is, the end where the guide slide bar 9 and the guide sleeve 12 are plugged in). The above structure is convenient for realizing the carbon film resistor 10 and for forming a limiting structure at the top end of the guide slide bar 9 to ensure that the annular movable plate 19 is reset to the maximum position without the guide sleeve 12 being detached from the guide slide bar 9.

[0046] In the present application, the entrance end of the guide sleeve 12 that cooperates with the guide slide bar 9 is connected to a conductive limit end 11 through a fastener, such as a screw or a rivet. The conductive limit end 11 is arranged corresponding to the linear groove, and can achieve limit cooperation with the linear groove near the top position of the guide slide bar 9. The conductive limit end 11 is a metal block and can be connected to the controller through a wire. The conductive limit end 11 can slide with the carbon film resistor 10 in the linear groove. Through the sliding between the two, an electrical circuit with resistance change is formed in the controller. The controller outputs different voltage signals through the resistance change signal, and the voltage signal range is between 0V and 5V. The above voltage signal can be calibrated according to the moving distance of the annular movable plate 19 relative to the tube body 3, and then the moving distance of the annular movable plate 19 is determined by the calibrated voltage signal.

[0047] In the present application, the annular movable plate 19 is provided with a conical cylinder base frame 22 at the middle position, and the conical cylinder base frame 22 is evenly distributed in the circumferential direction and connected to one end of the arc-shaped sheet 17, and the arc-shaped sheet 17 is an elastic sheet body, and the arc-shaped sheet 17 is provided with an end face parallel to the inner wall section of the tube body 3 at the corresponding position at the end face close to the inner wall of the tube body 3, and a pair of arc-shaped sheet contacts 18 are provided at the end face position, and each arc-shaped sheet contact 18 is connected to the controller through a wire, and when the two arc-shaped sheet contacts 18 are turned on, the arc-shaped sheet contacts 18 can form a conductive circuit within the control, and when the circuit is turned on, the controller can determine the movement stroke of the annular movable plate 19 through the conductive signal.

[0048] In the present application, the tube body 3 is provided with a conductive sleeve 13 at a position corresponding to the arc-shaped sheet contact 18, and the conductive sleeve 13 is a metal cylinder. There are two ways to set the conductive sleeve 13. When the arc-shaped sheet 17 is provided with a pair of arc-shaped sheet contacts 18, the conductive sleeve 13 can be provided as a continuous whole cylinder structure. When the arc-shaped sheets 17 are all provided with a pair of arc-shaped sheet contacts 18, the conductive sleeve 13 is discontinuous, and only the plate body of the arc structure is provided at the position corresponding to the arc-shaped sheet contact 18, so as to respectively realize the cooperation with the corresponding arc-shaped sheet contact 18 to form an electrical circuit.

[0049] In the present application, in order to increase the strength of the arc-shaped piece 17 and ensure its elasticity, an arc-shaped piece groove 23 is processed on the end surface of the arc-shaped piece 17 away from the inner wall of the tube body 3 .

[0050] When the present application is in use, the operator holds the flat mouth 8 with his mouth, and delivers the airflow through the flat mouth 8 via the flat mouth connecting end 7 and the pipe mouth connecting end 6 into the space formed by the conical end 5 of the tube body, the tube body 3, and the bottom cover 1.

[0051] When the airflow enters between the conical end 5 of the tube body and the hollow conical cylinder 21 through the conical end 5 of the tube body, it will stably and evenly contact the end surface of the annular moving plate 19 under the guidance of the hollow conical cylinder 21, and due to the presence of the annular plate groove 20, the contact area between the airflow and the annular moving plate 19 is increased.

[0052] The airflow is guided by the structure and pushes the annular moving plate 19 to slide stably relative to the tube body 3. Since the annular moving plate 19 and the inner wall of the tube body 3 are slidingly fitted, although some gas will enter the other end space formed by the annular moving plate 19 and the tube body 3 through the tiny gap between them, it still does not affect the movement of the annular moving plate 19 driven by the airflow. Therefore, the tiny airflow passing through the connection position of the annular moving plate 19 and the tube body 3 can be ignored.

[0053] During the relative movement between the annular movable plate 19 and the tube body 3, the structures providing reaction force for the annular movable plate 19 include two: one is the deformation of the arc-shaped piece 17 itself. During the relative movement between the annular movable plate 19 and the bottom cover 1 (tube body 3), the arc-shaped piece 17 will be subjected to external force and undergo its own bending deformation, and during the bending deformation process, the arc-shaped piece contact 18 is driven to approach the conductive sleeve 13 corresponding to the tube body 3, and when the set deformation is reached, the arc-shaped piece contact 18 contacts the conductive sleeve 13 to realize the conduction of the circuit. At this time, the controller can receive the above-mentioned conduction signal and determine the relative movement distance between the annular movable plate 19 and the tube body 3, and calculate the volume of the space formed by the annular movable plate 19, the tube body 3, and the tapered end 5 of the tube body.

[0054] The other is the relative movement between the guide slide bar 9 and the guide sleeve 12 , which causes the return spring 15 to deform accordingly.

[0055] At the same time, during the relative movement of the guide slide rod 9 and the guide sleeve 12, the carbon film resistor 10 and the conductive limit end 11 arranged on the guide slide rod 9 and the guide sleeve 12 also undergo relative movement, and then realize different resistance signals. These resistance signals will be captured by the controller and corresponding voltage signals will be generated according to the corresponding resistance signals. Since the relationship between the voltage signal and the moving distance of the annular movable plate 19 will be calibrated in advance, the moving distance of the annular movable plate 19 can be monitored through the above-mentioned voltage signal.

[0056] In the above process, the structure represented by the arc-shaped piece 17 and the arc-shaped piece contact 18 is used to determine the limit position or fixed point position of the movement of the annular movable plate 19, so as to realize signal correction in coordination with the structure of the guide slide bar 9 and the guide sleeve 12. The multiple carbon film resistors 10 and the conductive limit end 11 provided on the guide slide bar 9 and the guide sleeve 12 can also realize self-signal correction through the multiple resistance change loops formed by themselves. The controller takes the average value of the signal on the same guide slide bar 9 and the guide sleeve 12, and takes the average value on different guide slide bars 9 and the guide sleeve 12 as a secondary average, generates a corresponding voltage signal, and matches the voltage signal with the moving distance of the annular movable plate 19.

[0057] Since in the present application, the movement of the annular movable plate 19 is affected by the external airflow, the above structure can be used to monitor the user's breathing or breath training.

[0058] Finally, although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A lumen volume sensing device, comprising a tube body (3), wherein a sliding annular movable plate (19) is arranged inside the tube body (3), characterized in that: The annular movable plate (19) is an annular plate body, and a hollow conical cylinder (21) is integrally arranged at the inner edge position of the annular movable plate (19), and the hollow conical cylinder (21) extends toward the entrance of the tube body (3); the annular movable plate (19) is provided with a guide sleeve (12) at the end face away from the hollow conical cylinder (21), and the guide sleeves (12) are evenly distributed on the annular movable plate (19) around the central axis of the annular movable plate (19); the guide sleeve (12) extends in a direction away from the annular movable plate (19), and a guide slide bar (9) is slidably arranged inside the guide sleeve (12), and the guide slide bar (9) is fixed The bottom cover (1) is fixed on the bottom cover (1), and the bottom cover (1) is connected to the rear end of the tube body (3); a return spring (15) is arranged between the end surface of the guide slide rod (9) away from the bottom cover (1) and the end surface of the annular movable plate (19); a plurality of arc-shaped sheets (17) are arranged between the annular movable plate (19) and the tube body (3); the arc-shaped sheets (17) are arranged in pairs with arc-shaped sheet contacts (18) at the end surface facing the inner wall of the tube body (3); the tube body (3) is provided with a conductive sleeve (13) at the position corresponding to the arc-shaped sheet contacts (18); the paired arc-shaped sheet contacts (18) are respectively connected to the controller through wires, and the controller has an indicator light.

2. A lumen volume sensing device according to claim 1, characterized in that: The bottom end of the arc-shaped piece (17) is connected to the bottom cover (1) via an arc-shaped piece connecting seat (16), and the top end of the arc-shaped piece (17) is connected to the inner wall of the annular movable plate (19) via a conical cylinder bottom frame (22).

3. A lumen volume sensing device according to claim 1, characterized in that: The guide slide bar (9) has a plurality of linear grooves distributed on the circumferential side wall, and a carbon film resistor (10) is placed in the linear groove. The guide sleeve (12) is provided with a conductive limit end (11) corresponding to the carbon film resistor (10) at the entrance end, and the conductive limit end (11) and the carbon film resistor (10) are respectively connected to the controller via wires.

4. A lumen volume sensing device according to claim 3, characterized in that: The arc-shaped sheet (17) is processed with an arc-shaped sheet groove (23) on the end surface away from the arc-shaped sheet contact (18), and the length of the arc-shaped sheet groove (23) is the same as the length of the arc-shaped sheet contact (18).

5. A lumen volume sensing device according to any one of claims 1 to 4, characterized in that: The guide slide bar (9) and the annular movable plate (19) are provided with spring seats (14) at corresponding positions, and the spring seats (14) on the guide slide bar (9) and the annular movable plate (19) are respectively sleeved with two ends of the return spring (15).

6. A lumen volume sensing device according to any one of claims 1 to 4, characterized in that: The annular moving plate (19) is machined with an annular plate groove (20) on the end surface facing the inlet end of the tube body (3), and the annular plate groove (20) is distributed in the circumferential direction of the annular moving plate (19).

7. A lumen volume sensing device according to claim 6, characterized in that: The tube body (3) has a tube body conical end (5) that cooperates with the hollow conical cylinder (21); the closing end of the tube body conical end (5) is integrally arranged with the tube mouth connecting end (6); the tube mouth connecting end (6) is connected to a flat mouth connecting end (7); and a flat mouth (8) is integrally arranged on the flat mouth connecting end (7); the tube body (3) is connected to an exhaust hole (2) on the side close to the bottom cover (1).

8. The lumen volume sensing device according to claim 1, characterized in that: The tube body (3) is provided with a gripping sleeve (4) on the circumferential outer wall thereof, and the gripping sleeve (4) has an annular groove for a user to grip.

9. Use of a lumen volume sensing device according to any one of claims 1 to 8 in breath training.

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