Respiratory intensity indicating device and respiratory training device

Abstract

The invention relates to the technical field of medical auxiliary instruments, and discloses a respiration intensity indicating device and a respiration trainer, the respiration intensity indicating device comprises a main channel, a bypass channel, an air resistance structure and a sensor, the bypass channel and the main channel are arranged in parallel, and an inlet and an outlet of the bypass channel are respectively communicated with the main channel; the air resistance structure is arranged in the main channel and located in the range corresponding to the bypass channel, and the air resistance structure is used for enabling part of airflow of the main channel to enter the bypass channel; the sensor is arranged in the bypass channel and used for monitoring the flow and / or pressure of airflow. The sensor is arranged on the bypass channel, the flow and / or the pressure of the main channel are / is judged by monitoring the flow and / or the pressure of the bypass channel, the influence caused by dust and water vapor when the sensor is directly arranged in the main channel is reduced, and the breathing intensity of a patient in the breathing training process can be accurately monitored in real time; and detailed training data feedback is provided for trainees.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary instruments, and in particular to a breathing intensity indicator and a breathing trainer. Background Art

[0002] As the global population ages, the incidence of respiratory diseases is showing a significant upward trend, which poses a severe challenge to the medical and health field. As the body functions of the elderly gradually decline, they are more likely to suffer from respiratory diseases such as chronic obstructive pulmonary disease, bronchitis, and asthma. These diseases not only seriously affect the quality of life of patients, but also bring a heavy burden to medical resources. Therefore, early screening, diagnosis and effective rehabilitation treatment of respiratory diseases are particularly important.

[0003] In pulmonary rehabilitation, respiratory function training has been widely recognized and applied as a non-drug treatment method. As an important tool for respiratory function training, the respiratory trainer is based on the impedance principle and sets a specific resistance to exercise the patient's respiratory muscles, thereby enhancing the strength and endurance of the respiratory muscles and improving respiratory function. However, existing respiratory trainers have obvious deficiencies in monitoring respiratory intensity.

[0004] Specifically, most existing breathing trainers can only simply record the number of breaths or breathing time, but cannot accurately and in real time monitor the breathing intensity, that is, the strength and endurance required by the patient during breathing training. The lack of such monitoring means makes it impossible for the trainee to accurately understand his or her training status, and it is impossible to adjust the training intensity in time according to the training effect, thus affecting the effect and efficiency of breathing training.

[0005] In summary, how to solve the shortcomings of existing respiratory trainers in monitoring respiratory intensity and provide more accurate and efficient lung rehabilitation treatment methods for patients with respiratory diseases is a technical problem that needs to be solved urgently. Summary of the invention

[0006] The purpose of the present invention is to provide a breathing intensity indicating device and a breathing trainer to solve the problems existing in the above-mentioned prior art. A sensor is set on a side channel, and the flow and / or pressure of the main channel are judged by monitoring the flow and / or pressure of the side channel, thereby reducing the impact of dust and water vapor caused by directly setting the sensor in the main channel. The breathing intensity of the patient during the breathing training process can be monitored in real time and accurately, and detailed training data feedback can be provided to the trainee.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The present invention provides a breathing intensity indicating device, comprising a main channel, a side channel, an air resistance structure and a sensor, wherein the side channel is arranged in parallel with the main channel, and an inlet and an outlet of the side channel are respectively connected to the main channel; the air resistance structure is arranged in the main channel and is located within a range corresponding to the side channel, and the air resistance structure is used to allow part of the airflow of the main channel to enter the side channel; the sensor is arranged in the side channel and is used to monitor the flow rate and / or pressure of the airflow.

[0009] In one embodiment, the air-blocking structure includes an air-blocking column and a support member, wherein the air-blocking column is located in the middle of the main channel, and the support member is radially distributed around the air-blocking column, and the two ends of the support member are respectively connected to the outer wall of the air-blocking column and the inner wall of the main channel.

[0010] In one embodiment, the cross section of the air resistance column is circular, and the axis of the air resistance column coincides with the axis of the main channel.

[0011] In one embodiment, the support member is a fan-shaped plate or a wedge-shaped plate extending in the axial direction of the main channel, and the support member divides the main channel into at least two fan-shaped channels, and the inlet and outlet of the bypass channel are located in the same fan-shaped channel.

[0012] The present invention also provides a breathing trainer, comprising a breathing intensity indicator, an air filter and an air resistance adjusting device as described above, wherein the inlet of the main channel is connected to the air filter, and the outlet of the main channel is connected to the air resistance adjusting device, and the air resistance adjusting device comprises a resistance channel and a resistance adjusting member, wherein the resistance adjusting member is arranged in the resistance channel, and the resistance adjusting member is used to adjust the cross-sectional size of the resistance channel.

[0013] In one embodiment, the resistance adjustment member is an iris aperture, and the iris aperture is connected to a lever, and the lever is used to swing around the center of the iris aperture to adjust the opening size of the iris aperture.

[0014] In one embodiment, the air resistance adjustment device also includes a shell, the resistance channel runs through both sides of the shell, the lever is located in the shell, the lever is connected to a driving mechanism, the resistance channel includes a first resistance channel and a second resistance channel, and a resistance adjustment cavity for accommodating the iris aperture is formed between the first resistance channel and the second resistance channel.

[0015] In one embodiment, the driving mechanism adopts a linear driving mechanism, which is installed in the shell. The linear driving mechanism includes a linear motor and a connecting rod. The connecting rod is coaxially connected to the power end of the linear motor. The connecting rod is radially provided with a V-shaped groove. The lever passes through and is connected to the V-shaped groove. The small mouth end of the V-shaped groove is close to the iris aperture.

[0016] In one embodiment, the shell includes a first shell and a second shell that are snap-fitted to each other, the first resistance channel is arranged in the first shell, and the second resistance channel is arranged in the second shell, and after the first shell and the second shell are snap-fitted to each other, the first resistance channel and the second resistance channel are snap-fitted to each other.

[0017] In one embodiment, the shell includes a first closing shell and a second closing shell, the first closing shell or the second closing shell is provided with a through hole for the shift rod to pass through, the first closing shell and the second closing shell are buckled on the outer diameter side of the resistance channel, and the shell formed by the first closing shell and the second closing shell is rotatably connected to the resistance channel.

[0018] Compared with the prior art, the present invention has achieved the following technical effects:

[0019] The present invention sets the sensor on the side channel, and determines the flow and / or pressure of the main channel by monitoring the flow and / or pressure of the side channel, thereby reducing the impact of directly setting the sensor in the main channel due to dust and water vapor. It can monitor the patient's breathing intensity during breathing training in real time and accurately, and provide detailed training data feedback for the trainer. Through these data, the trainer can clearly understand his or her training status, and then adjust the training plan according to the actual situation to achieve the best rehabilitation effect.

[0020] Other technical solutions included in the present invention can also achieve the following technical effects:

[0021] The air resistance adjustment device in the breathing trainer of the present invention adopts an aperture structure or an iris aperture as the adjustment structure of the resistance channel, which can accurately adjust the cross-sectional size of the resistance channel, and then can accurately adjust the training parameters according to individual differences and training goals, and provide personalized training plans, which not only improves the pertinence and effectiveness of the training, but also greatly improves the training experience and comfort of patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic diagram of the overall structure of the breathing trainer in Example 1 of the present invention;

[0024] Figure 2 This is a schematic diagram of a breathing intensity indicator device in Example 1 of the present invention;

[0025] Figure 3 for Figure 2 Partial cutaway diagram;

[0026] Figure 4 for Figure 2 Axial view of

[0027] Figure 5 This is a schematic diagram of the resistance adjustment structure in Example 1 of the present invention;

[0028] Figure 6 Schematic diagram of the internal structure of the air resistance adjustment device in Example 1 of the present invention;

[0029] Figure 7 This is a schematic diagram of the first shell in Embodiment 1 of the present invention;

[0030] Figure 8 This is a schematic diagram of the second shell in Embodiment 1 of the present invention;

[0031] Fig. 9 This is a schematic diagram of the iris aperture and the lever in Embodiment 1 of the present invention;

[0032] Fig.10 This is a schematic diagram of a connecting rod in Example 1 of the present invention;

[0033] Fig.11 This is a block diagram of the breathing training device in Example 1 of the present invention;

[0034] Fig.12 This is a schematic diagram of the circuit design in Example 1 of the present invention;

[0035] Fig.13 This is a schematic diagram of the resistance adjustment structure in Example 2 of the present invention;

[0036] Fig.14 This is a schematic diagram of the resistance channel in Example 2 of the present invention;

[0037] Fig.15 It is an axial cross-sectional view of the resistance adjustment structure in Example 2 of the present invention;

[0038] Fig.16 It is a radial cross-sectional view of the resistance adjustment structure in Example 2 of the present invention;

[0039] Fig.17 This is a block diagram of the breathing training device in Example 2 of the present invention;

[0040] Fig.18 The figure is a diagram showing the relationship between the rotation angle of the adjustment lever and the change in air resistance in Embodiment 2 of the present invention;

[0041] Fig.19 is the minimum air resistance of the adjustable air resistance measured at different air flow rates in Example 2 of the present invention;

[0042] Fig. 20 is the maximum air resistance of the adjustable air resistance measured at different air flow rates in Example 2 of the present invention;

[0043] Fig.21 The air resistance is continuously adjusted at an air flow rate of 45 SLM in Example 2 of the present invention, and the air resistance changes with time;

[0044] Among them, 1. Blowing filter; 2. Breathing intensity indicator; 3. Flow channel conversion head; 4. Air resistance adjustment device;

[0045] 21. Main channel; 22. Bypass channel; 221. Bypass channel inlet; 222. Bypass channel outlet; 23. Sensor mounting slot; 24. Air resistance column; 241. Support member;

[0046] 41. First shell; 411. First resistance channel; 412. First motor mounting slot; 42. Second shell; 421. Second resistance channel; 422. Second motor mounting slot; 43. Iris aperture; 44. Push rod; 45. Connecting rod; 451. V-shaped groove; 46. Linear motor; 47. First closed shell; 471. Through hole; 48. Second closed shell; 49. Main support structure; 410. Gas channel; 420. Semicircular shell structure. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] The purpose of the present invention is to provide a breathing intensity indicating device and a breathing trainer to solve the problems existing in the prior art. A sensor is set on a side channel, and the flow and / or pressure of the main channel are judged by monitoring the flow and / or pressure of the side channel, thereby reducing the impact of dust and water vapor caused by directly setting the sensor in the main channel. The breathing intensity of the patient during breathing training can be monitored in real time and accurately, and detailed training data feedback can be provided to the trainee.

[0049] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0050] Embodiment 1:

[0051] like Figures 1 to 12 As shown, the present invention provides a breathing trainer, including a breathing intensity indicating device 2, the breathing intensity indicating device 2 includes a main channel 21, a side channel 22, an air resistance structure and a sensor, the side channel 22 is arranged in parallel with the main channel 21, the cross section of the side channel 22 is smaller than the cross section of the main channel 21, the breathing airflow mainly flows through the main channel 21, and part of the airflow enters the side channel 22. The inlet (side channel inlet 221) and the outlet (side channel outlet 222) of the side channel 22 are respectively connected to the main channel 21, a part of the airflow of the main channel 21 enters the side channel 22 through the side channel inlet 221, and flows through the side channel 22 and then flows out from the side channel outlet 222. The air resistance structure is arranged in the main channel 21 and is located in the range corresponding to the side channel 22, so that when the airflow entering the main channel 21 hits the air resistance structure, a diversion will occur, and a part of this diversion will enter the side channel 22. The sensor is disposed in the bypass channel 22 to monitor the flow rate and / or pressure of the airflow. During specific installation, the sensor may be disposed in the sensor mounting slot 23 , and the sensing area of ​​the sensor is located in the bypass channel 22 .

[0052] The present invention sets the sensor on the side channel 22, and determines the flow and / or pressure of the main channel 21 by monitoring the flow and / or pressure of the side channel 22, thereby reducing the impact of dust and water vapor caused by directly setting the sensor in the main channel 21. It can monitor the patient's breathing intensity during breathing training in real time and accurately, and provide detailed training data feedback for the trainer. Through these data, the trainer can clearly understand his or her training status, and then adjust the training plan according to the actual situation to achieve the best rehabilitation effect.

[0053] In one embodiment, the sensor uses a MEMS thermal high-performance airflow sensor chip to measure the bidirectional airflow of 0 to 1000 L / min. Design and process an insulating cover plate with grooves, seal the specially designed immersion gold PCB into it, seal the MEMS thermal airflow sensor chip into the reserved packaging groove of the PCB, and use a gold wire bonding machine to bond the Pad (connection point or pin) on the chip and the Pad on the PCB to make an electrical connection. After that, assemble the chip packaging board into the sensor mounting groove 23, electrically connect the reserved sensor chip interface to the external circuit PCB, align the prepared chip packaging board with the screw holes around the sensor mounting groove 23, put an airtight plastic pad in the sensor mounting groove 23, and lock the screws to complete the packaging. This packaging method is convenient and detachable, which is convenient for replacing chips and can facilitate experiments and subsequent applications.

[0054] In one embodiment, the circuit design principle is as follows Fig.12 As shown, the circuit includes a sensor readout bridge and a voltage amplifier circuit, a temperature compensation module, and a high-precision ADC sampling module based on the ADS1118 chip. Among them, the sensor readout bridge adopts a Wheatstone bridge, which forms a Wheatstone bridge with the two temperature detection resistors of the sensor. The bridge is used to adjust the voltage of the differential pressure output. The two output voltages are connected to the instrument amplifier chip for differential amplification and noise reduction. Finally, the single-ended amplified output is connected to the ADC as the output of the sensor for analog-to-digital conversion. The circuit adopts PCB for plate making, and mostly adopts chip-type miniaturized electronic components. The devices used include various resistors, capacitors, inductors, INA188, LM358p, etc. The circuit board welded by this method can ensure the miniaturization and lightweight of the overall system.

[0055] In one embodiment, if Figure 3 and Figure 4 As shown, the air-blocking structure includes an air-blocking column 24 and a support member 241. The air-blocking column 24 can be in a regular or irregular shape such as a sphere, a prism, or a cylinder, so as to realize the functions of airflow collision and diversion. The air-blocking column 24 is located in the middle of the main channel 21, and the support members 241 are radially distributed around the air-blocking column 24. The two ends of the support members 241 are respectively connected to the outer wall of the air-blocking column 24 and the inner wall of the main channel 21. The setting of the support member 241 is to avoid affecting the airflow through the main channel 21 as much as possible. The main function of the support member 241 is to support the air-blocking column 24, so that it can be stably maintained in a specific position and guide the airflow without being moved or changing position due to the influence of the airflow.

[0056] In one embodiment, if Figure 3 and Figure 4As shown, the air resistance column 24 is cylindrical, the cross section of the air resistance column 24 is circular, the axis of the air resistance column 24 coincides with the axis of the main channel 21, and the end face of the cylinder faces the direction of the airflow, which can block the airflow and thus change the path of the airflow. The bypass channel inlet 221 is located near the end face of the cylinder, so that the airflow with the changed path can enter the bypass channel 22.

[0057] In one embodiment, if Figure 3 and Figure 4 As shown, the support member 241 is a fan-shaped plate or a wedge-shaped plate extending in the axial direction of the main channel 21. The support members 241 are evenly distributed in the circumferential direction. The main channel 21 is divided into at least two fan-shaped channels by the support members 241. The side channel inlet 221 and the side channel outlet 222 are connected to the same fan-shaped channel. Therefore, the fan-shaped channel can be used as a guide channel for the airflow, so that the airflow can smoothly enter the bypass channel 22 and flow out of the bypass channel 22.

[0058] In one embodiment, the breathing trainer includes an air blowing filter 1, an air resistance adjusting device 4, and a breathing intensity indicating device 2 as described above. The air blowing filter 1 is used to connect to the mouth of the trainee. The air blowing filter 1 has a filter element that can filter part of the water vapor or impurities. The inlet of the main channel 21 is connected to the air blowing filter 1, and the outlet of the main channel 21 is connected to the air resistance adjusting device 4. A flow channel conversion head 3 can also be arranged between the outlet of the main channel 21 and the air resistance adjusting device 4. The flow channel conversion head 3 can be in a variable diameter form to adapt to the air flow channels of different diameters of the breathing intensity indicating device 2 and the air resistance adjusting device 4. The breathing trainer as a whole forms a structure in which the air blowing filter 1, the breathing intensity indicating device 2, the flow channel conversion head 3, and the air resistance adjusting device 4 are connected in sequence. When the trainee blows air into the air blowing filter 1, the parameters such as the flow rate and pressure of the air flow can be obtained after the air flow passes through the breathing intensity indicating device 2, and the resistance of the air flow is adjusted by the air resistance adjusting device 4 to obtain different training effects.

[0059] In one embodiment, if Figures 5 to 10 As shown, the air resistance regulating device 4 includes a resistance channel and a resistance regulating member. The resistance regulating member is arranged in the resistance channel. The resistance regulating member can be a valve core in the form of a butterfly valve, a gate valve, a ball valve, etc., or can be an aperture structure or an iris aperture 43, etc. The cross-sectional size of the resistance channel is adjusted by the resistance regulating member, thereby adjusting the resistance size of the air resistance regulating device 4 to the exhaled airflow of the trainee.

[0060] In one embodiment, if Figures 5 to 10As shown, the resistance adjustment member adopts an iris aperture 43, which is often used to adjust the aperture size. It can accurately adjust the size of the cross section, and in the present invention, a continuously adjustable air resistance mechanical structure can be formed. The iris aperture 43 is connected to a lever 44, and the lever 44 is used to swing around the center of the iris aperture 43 to adjust the opening size of the iris aperture 43. By using the iris aperture 43 as the adjustment structure of the resistance channel, the cross-sectional size of the resistance channel can be accurately adjusted, and then the training parameters can be accurately adjusted according to individual differences and training goals, providing a personalized quota training plan, which not only improves the pertinence and effectiveness of the training, but also greatly improves the training experience and comfort of the patient.

[0061] In one embodiment, if Figures 5 to 10 As shown, the air resistance adjustment device 4 also includes a housing, a resistance channel runs through both sides of the housing, a lever 44 is located in the housing, and the lever 44 is connected to a driving mechanism, which can be electrically driven or manually driven. The resistance channel includes a first resistance channel 411 and a second resistance channel 421, and a resistance adjustment cavity for accommodating the iris aperture 43 is formed between the first resistance channel 411 and the second resistance channel 421.

[0062] In one embodiment, if Figures 5 to 10 As shown, the driving mechanism adopts a linear driving mechanism, which is installed in the housing. The linear driving mechanism can adopt a linear motor 46, an electric telescopic cylinder, etc. The linear driving mechanism is connected to the lever 44, and the lever 44 can be driven to swing through the linear driving mechanism. The lever 44 can swing within a certain range, for example, the swing range is 91°, thereby adjusting the size of the iris aperture 43.

[0063] In one embodiment, the linear drive mechanism includes a linear motor 46 and a connecting rod 45. The connecting rod 45 is coaxially connected to the power end of the linear motor 46. When the power end of the linear motor 46 moves linearly, it can drive the connecting rod 45 to move linearly along the axial direction. The connecting rod 45 is radially provided with a V-shaped groove 451. The small end of the V-shaped groove 451 is close to the iris aperture 43. The lever 44 penetrates and is connected to the V-shaped groove 451. When the connecting rod 45 moves linearly along the axial direction, it can drive the lever 44 to swing in the circumferential direction. The V-shaped groove 451 can adapt to the swing amplitude of the lever 44, that is, the small end is used to drive the lever 44 to swing, and the large end is used to avoid interference with the swing of the lever 44, thereby controlling the increase and decrease of the cross-sectional area of ​​the adjustable air resistance, so as to achieve the purpose of adjusting the air resistance.

[0064] In one embodiment, the electronic control module of the air resistance adjustment device 4 includes an Inpengfei K20 model motor for adjusting the size of the resistance opening. By outputting PWM signals (Pulse Width Modulation) and high and low levels, the motor is driven to extend and shorten, and the motor drives the connecting rod 45 to perform corresponding movements.

[0065] In one embodiment, if Figures 5 to 8 As shown, the housing includes a first housing 41 and a second housing 42 that are buckled and connected to each other, a first resistance channel 411 is provided in the first housing 41, and a second resistance channel 421 is provided in the second housing 42. After the first housing 41 and the second housing 42 are buckled and connected, the first resistance channel 411 and the second resistance channel 421 are buckled and connected to form a resistance channel that passes through the front and back. At this time, the position where the first resistance channel 411 and the second resistance channel 421 are connected forms a resistance adjustment cavity for accommodating the iris aperture 43. By placing the iris aperture 43 in the resistance adjustment cavity and sealing it with a sealing ring, the cross-sectional size of the resistance channel can be adjusted. The first housing 41 is also provided with a first motor mounting groove 412, and the second housing 42 is also provided with a second motor mounting groove 422. The first motor mounting groove 412 and the second motor mounting groove 422 are combined to install and fix the linear motor 46.

[0066] In one embodiment, a training guidance module is also included. The training guidance module is a human-computer interaction during the training process, which is used to instruct and guide the user to train hard in the direction of improving their breathing ability / intensity. The core is the design of the guidance strategy algorithm and the user interaction mode, and the characteristics are described as follows:

[0067] 1) The peak airflow volume of each breath during training is used as a quantitative indicator and reference for the breathing intensity of the current session. After each training session, the highest peak airflow volume of the current training session is used as the optimal value of each breathing training session.

[0068] 2) Based on the best breathing intensity values ​​of each training session saved by the user, an algorithm is used to analyze and estimate the trend, and the user's training goals for the next training session are intelligently given.

[0069] 3) When the user reaches the training goal, the trend analysis algorithm will guide the user to achieve a higher goal in the next training.

[0070] 4) When the user fails to reach the goal, the trend analysis algorithm will appropriately lower the goal during the next training and guide the user to reach the goal.

[0071] 5) Each goal setting not only refers to the target value and actual value of the previous training, but also refers to all the target values ​​and actual values ​​of the user's training history, and analyzes the overall trend.

[0072] 6) After estimating that the user’s limit value has been reached, the limit value is used as the subsequent target.

[0073] 7) Allow users to set their own goals each time they train.

[0074] In one embodiment, a data management service module is also included. The data management service module is a part of the supporting software service with a smart phone App as the carrier. The data management service module can provide data storage function for each training, historical data access function, data visualization, and data cloud synchronization.

[0075] The visualization of breathing intensity, training guidance module and data management service can all be implemented in the smart phone application software developed in conjunction with the present invention. Each visualization of breathing intensity will be displayed in the mobile phone application software interface in the form of a curve graph and numerical text. The algorithm of the training guidance module is embedded in the mobile phone application software, and the intelligently set goals and guidance texts will be displayed on the corresponding interface for users to see during each training, and guidance texts or effects will be provided during the training process to encourage users to achieve their goals. The data management service is also embedded in the smart phone software, and provides the function of saving each training data, the function of accessing historical data, and the cloud synchronization function and has a corresponding user interface.

[0076] In one embodiment, the actual circuit design of the sensor is as shown in the circuit schematic diagram ( Fig.12 ) is designed, a PCB circuit board is used to make the circuit line, and the electronic components are soldered to the circuit board. The analog output interface on the circuit is connected to the ADS1118 analog-to-digital converter (ADC) through electrical connection. Fig.12 The wiring method shown in the figure electrically connects the ADS1118 chip with the ESP32 Bluetooth microcontroller to enable the ESP32 microcontroller to drive the ADS1118 and read data. In addition, the ESP32 microcontroller is also responsible for driving the Bluetooth module to provide Bluetooth connection services and data transmission functions to the smartphone application software.

[0077] Embodiment 2:

[0078] The main difference between Example 2 and Example 1 is that the design of the aperture-type air resistance or iris aperture-type air resistance packaging shell is different, and the design of a differential pressure sensor is added to facilitate the test of the air resistance. The same structure can be used in other parts.

[0079] In one embodiment, in combination Figure 13 to Figure 17As shown, it includes a breathing intensity indicating device 2 and an air resistance adjusting device 4, wherein the air resistance adjusting device 4 includes: a power supply, a control module, a communication module and an adjustable air resistance mechanical structure. The control module can adopt a single chip microcomputer, which is mainly used to drive and control a pressure differential air pressure sensor (for example, XGZP6897A pressure differential pressure sensor) to read the air pressure value in real time. The communication module is used to transmit data with the host computer software (mobile phone app, computer). The adjustable air resistance mechanical structure includes an iris aperture 43 and an adjustable air resistance mechanical package. The adjustable air resistance mechanical package is used to seal the iris aperture 43, and provide a mechanical structure for manually adjusting the air resistance and ensure a certain air tightness. At the same time, two gas channels 410 are left near the front and rear ends of the air resistance for mechanical connection with the pressure differential air pressure sensor. The breathing intensity indicating device 2 includes: a power supply, a large-range air flow meter module (hardware and circuit module), a control module and a Bluetooth communication module. The large-range air flow meter module is used to realize the air flow sensing function. The control module is used to realize the real-time reading of the sensor data. The Bluetooth communication module is used to realize data transmission with the host computer.

[0080] The air resistance regulating device 4 in the second embodiment can be combined with a differential pressure sensor to realize air resistance calibration and real-time air resistance calculation. The housing includes a first closed housing 47 and a second closed housing 48. The first closed housing 47 or the second closed housing 48 is provided with a through hole 471 for the lever 44 to penetrate. That is to say, when the first closed housing 47 or the second closed housing 48 rotates, the lever 44 can be driven to rotate, thereby realizing the control of the iris aperture 43. The first closed housing 47 and the second closed housing 48 are buckled on the outer diameter side of the resistance channel. The housing formed by the first closed housing 47 and the second closed housing 48 is rotatably connected to the resistance channel, thereby enclosing the iris aperture 43 inside, and realizing effective control of the iris aperture 43 through the relative rotation of the housing and the resistance channel to change the air resistance.

[0081] In one embodiment, as in Example 2, a main body support structure 49 is further included. The main body support structure 49 is U-shaped. The two arms of the U-shaped structure are respectively connected to the first resistance channel 411 and the second resistance channel 421. The middle of the two arms is provided with a space for accommodating the shell and for the shell to rotate. In addition, to ensure the integrity and stability of the structure, the outer shell of the resistance adjustment chamber between the first resistance channel 411 and the second resistance channel 421 is a semi-circular shell structure 420. The semi-circular shell structure 420 can serve as a rotation support and guide for the shell (the first closing shell 47 and the second closing shell 48). At the same time, the arrangement of the semi-circular shell structure 420 can reserve space for the rotation of the lever 44.

[0082] In one embodiment, as in Example 2, a gas channel 410 is also included, and the gas channel 410 includes a first gas channel and a second gas channel. The first gas channel is connected to the first resistance channel 411, and the second gas channel is connected to the second resistance channel 421. By connecting a differential pressure sensor to the first gas channel and the second gas channel, the differential pressure sensor can be used to read the air pressure value in real time.

[0083] After assembling the mechanical structure of the air resistance regulating device 4, connect one end of it to the mechanical valve and the air flow sensor (upstream of the air flow) and ventilate. The connection relationship from upstream to downstream of the air flow is: mechanical valve, air flow sensor and air resistance regulating device 4. Move the first closed shell 47 / second closed shell 48 or the lever 44 to change the area of ​​the iris diaphragm 43 to increase or decrease the air resistance. Under the same air flow, read the pressure difference at both ends of the air resistance, and use the instantaneous pressure difference and air flow to calculate the real-time air resistance change by dividing the pressure difference by the air flow.

[0084] Figure 19-20 The test results show that the maximum air resistance is about 375Pa / SLM, and the minimum is about 0Pa / SLM, which has a relatively wide range of air resistance adjustability.

[0085] Fig.21 The test data shows that the adjustable air resistance is repeatable and stable.

[0086] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A breathing intensity indicating device, characterized in that: include: Main channel; A side channel, the side channel is arranged in parallel with the main channel, and the inlet and outlet of the side channel are respectively connected to the main channel; an air-blocking structure, the air-blocking structure being arranged in the main channel and located within a range corresponding to the bypass channel, the air-blocking structure being used to direct part of the airflow of the main channel into the bypass channel; and a sensor, wherein the sensor is arranged in the bypass channel and is used for monitoring the flow rate and / or pressure of the air flow.

2. The breathing intensity indicating device according to claim 1, characterized in that: The air-blocking structure comprises an air-blocking column and a support member, wherein the air-blocking column is located in the middle of the main channel, the support member is radially distributed around the air-blocking column, and two ends of the support member are respectively connected to the outer wall of the air-blocking column and the inner wall of the main channel.

3. The breathing intensity indicating device according to claim 2, characterized in that: The cross section of the air resistance column is circular, and the axis of the air resistance column coincides with the axis of the main channel.

4. The breathing intensity indicating device according to claim 2, characterized in that: The support member is a fan-shaped plate or a wedge-shaped plate extending in the axial direction of the main channel. The support member divides the main channel into at least two fan-shaped channels. The inlet and outlet of the bypass channel are located in the same fan-shaped channel.

5. A breathing training device, characterized in that: It comprises a breathing intensity indicating device, an air blowing filter and an air resistance adjusting device as described in any one of claims 1 to 4, wherein the inlet of the main channel is connected to the air blowing filter, the outlet of the main channel is connected to the air resistance adjusting device, the air resistance adjusting device comprises a resistance channel and a resistance adjusting member, the resistance adjusting member is arranged in the resistance channel, and the resistance adjusting member is used to adjust the cross-sectional size of the resistance channel.

6. The breathing training device according to claim 5, characterized in that: The resistance adjustment member adopts an iris aperture, and the iris aperture is connected with a lever, and the lever is used to swing around the center of the iris aperture to adjust the opening size of the iris aperture.

7. The breathing training device according to claim 6, characterized in that: The air resistance adjustment device also includes a shell, the resistance channel runs through both sides of the shell, the lever is located in the shell, the lever is connected to a driving mechanism, the resistance channel includes a first resistance channel and a second resistance channel, and a resistance adjustment cavity for accommodating the iris aperture is formed between the first resistance channel and the second resistance channel.

8. The breathing training device according to claim 7, characterized in that: The driving mechanism adopts a linear driving mechanism, which is installed in the shell. The linear driving mechanism includes a linear motor and a connecting rod. The connecting rod is coaxially connected to the power end of the linear motor. The connecting rod is radially provided with a V-shaped groove. The shift rod passes through and is connected to the V-shaped groove. The small mouth end of the V-shaped groove is close to the iris aperture.

9. The breathing training device according to claim 7, characterized in that: The shell includes a first shell and a second shell that are snap-fitted to each other, the first resistance channel is arranged in the first shell, and the second resistance channel is arranged in the second shell. After the first shell and the second shell are snap-fitted to each other, the first resistance channel and the second resistance channel are snap-fitted to each other.

10. The breathing training device according to claim 7, characterized in that: The shell includes a first closing shell and a second closing shell, the first closing shell or the second closing shell is provided with a through hole for the shift rod to pass through, the first closing shell and the second closing shell are buckled on the outer diameter side of the resistance channel, and the shell formed by the first closing shell and the second closing shell is rotatably connected to the resistance channel.

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