Adaptive atomization method and device based on air pump regulation

Abstract

The present application relates to atomization equipment technical field, provide a kind of based on self-adapting atomization method and device of gas pump regulation, method includes: S1, obtain the respiratory airflow sampling value of analog breathing cycle instant;S2, filter abnormal data in respiratory airflow sampling value;S3, according to respiratory airflow sampling value determination breathing state;S4, establish the PID control model of gas pump speed and the spray airflow;S5, determine atomizer operating mode: S6, respiratory airflow follow-up control mode;S7, adaptive tidal volume control mode.Device includes: atomization host computer, atomization component and bidirectional gas flow sensor;Atomization component includes atomization connecting pipe, atomization cup and atomization face guard;Atomization host computer includes control core, gas pump, LCD display and atomization mode switch button.The present application realizes two kinds of atomization control mode using a PID control model, realizes according to respiratory airflow accurate control atomizer, can improve drug utilization rate.

Description

Technical Field

[0001] This invention relates to the field of atomization equipment, and more specifically to an adaptive atomization method and apparatus based on air pump regulation. Background Technology

[0002] Nebulization is a technology that uses ultrasound, pneumatics, or other methods to transform liquid medication into fine droplets. Nebulized inhalation drug delivery technology, with its unique advantages, allows drugs to directly reach the lungs. However, existing nebulizers, once turned on, continuously atomize a fixed amount of medication, making precise control of the delivered dose impossible. For targeted drugs, it's crucial to ensure the drug reaches the lungs as much as possible and minimizes waste. Therefore, the required spray volume varies at different times, necessitating precise airflow control, an effect that current nebulizers often cannot achieve.

[0003] With the development of technology, by combining multiphase flow numerical simulation and backlight high-speed imaging experiments, we can now deeply analyze the intrinsic correlation between spray characteristics and the structural and operational parameters of nebulizers, providing a theoretical basis and technical support for precise control of drug delivery. At the same time, through simulation, we can explore the deposition characteristics of aerosols in the lesion area and within the nebulizer conduit, and establish a complete quantitative relationship model of the delivery chain covering "nebulizer output dose - tubing loss - lesion deposition", providing a standardized reference system for achieving precise control of delivery dose. Summary of the Invention

[0004] To address the shortcomings of the prior art, this invention provides an adaptive atomization method based on air pump regulation, comprising the following steps: S1, acquire the sampled value of respiratory airflow at the instant of the simulated respiratory cycle; S2, Filtering out abnormal data in the respiratory airflow sampling values ​​to obtain the effective respiratory airflow value. ; S3, determine the respiratory status based on the effective value of respiratory airflow. If an effective value of respiratory airflow is detected... If it is, then it is determined to be an inhalation state; otherwise, it is determined to be an exhalation state. S4, Establish a PID control model for the air pump speed and the spray airflow; S5, Determine the atomizer operating mode: When the nebulizer is in the breathing airflow follow control mode, execute step S6; when the nebulizer is in the adaptive tidal volume control mode, execute step S7. S6, Breathing airflow follow-up control mode; S61: Execute S1 to obtain the respiratory airflow sampling value; execute S2 to obtain the effective respiratory airflow value. Execute S3 to determine if it is in an inhalation state; if so, execute S62; otherwise, execute S63. S62, execute S4, will As the instantaneous flow rate of the air pump The signal is sent to the PID control model, which then outputs the air pump speed V. OUT Control the air pump to operate, then return to S61; S63, stop the air pump, return to S61; S7, Adaptive tidal volume control mode; S71, execute S1 to obtain the respiratory airflow sampling value, execute S2 to obtain the filtered respiratory airflow sampling value. Execute S3 to determine if it is in an inhalation state. S72, calculates the corresponding average inspiratory flow rate based on the respiratory airflow sampling values ​​during the inspiratory phase in multiple respiratory cycles. ; S73, As the instantaneous flow rate of the air pump The data is sent to the PID control model, which then outputs the air pump speed V. OUT Control the air pump to work; S74: If the average inspiratory flow rate is 0 for several consecutive breathing cycles, it is determined that the person is removed from the nebulizer mask and nebulization is stopped; otherwise, return to S71.

[0005] Preferably, S1, the sampling value of respiratory airflow at the instant of the simulated respiratory cycle is obtained, specifically as follows: Breathing is simulated by blowing or inhaling air into a nebulized mask using a breathing simulator. Instantaneous respiratory airflow samples are obtained using a bidirectional gas flow sensor, with forward airflow simulating inhalation and reverse airflow simulating exhalation. The i-th respiratory airflow sample is obtained from the bidirectional gas flow sensor sampling. During the simulated inhalation period All are greater than or equal to 0 during the simulated exhalation period. All are less than 0.

[0006] Preferably, S2 filters out abnormal data in the respiratory airflow sampling values, specifically: An amplitude-limiting filtering algorithm is used to filter out abnormal data in the airflow sampling values: ; in, Indicates the effective value of respiratory airflow. , Indicates the first , The value of the next respiratory airflow sample. This indicates the maximum allowable error between two samples.

[0007] Preferably, S4, establishing a PID control model for the air pump speed and the spray airflow, specifically: (1) Construct a calibration model for the air pump speed and the spray airflow of the atomizing component, specifically calibrated as follows: ; in, Indicates the target speed of the air pump. This indicates the instantaneous flow rate of the air pump. The first calibration coefficient, This is the second calibration coefficient. and Determined through fitting, It is a time variable; (2) Establish a PID control model for the air pump speed and the spray airflow of the atomizing component, specifically as follows: ; in, This indicates the output air pump speed. , , These represent the target speed and the actual speed of the air pump, respectively. , , Error value , , These are the first, second, and third coefficients of the PID control model.

[0008] (3) The target of PID closed-loop control is the air pump speed. Equal to the target speed of the air pump .

[0009] Preferably, S62 is as follows: S62, execute S4, will As the instantaneous flow rate of the air pump The target air pump speed is obtained through equation (3). , will the current As the first The target speed of the secondary pump is sent to the PID control model, and the PID control model obtains the output pump speed V according to equation (4). OUT The PID control model controls the air pump of the atomizing device at V OUT Working at a speed of [speed], completing the [number]th [stage]. The air pump control of the secondary atomizing device returns to S61.

[0010] Preferably, S72 and S73 are as follows: S72, the total tidal volume of the entire inspiratory phase is obtained by integrating the airflow during the inspiratory phase across multiple respiratory cycles, and then divided by the total duration of the corresponding inspiratory phase to obtain the corresponding average inspiratory flow rate, specifically: ; in, This represents the average inspiratory flow rate over multiple respiratory cycles. It represents the total tidal volume during the inspiratory phase across multiple respiratory cycles. This represents the effective value of respiratory airflow in a single sampling. Indicates the sampling period. This represents the total duration of inspiratory breathing over multiple respiratory cycles, where n represents the number of times the inspiratory state was sampled over multiple respiratory cycles. S73, As the instantaneous flow rate of the air pump The target air pump speed is obtained through equation (3). , will the current As the first The target speed of the secondary pump is sent to the PID control model, and the PID control model obtains the output pump speed V according to equation (4). OUT The PID control model controls the air pump of the atomizing device at V OUT Working at a speed of [speed], completing the [number]th [stage]. Air pump control for the secondary atomizing device.

[0011] The present invention also discloses an adaptive atomizing device based on air pump regulation, comprising: The system comprises an atomizing main unit, an atomizing assembly, and a bidirectional gas flow sensor; the bidirectional gas flow sensor is installed in the atomizing assembly, and the atomizing main unit is connected to both the atomizing assembly and the bidirectional gas flow sensor, specifically as follows: The bidirectional gas flow sensor is a sensor that can simultaneously detect both forward and reverse gas flow. The bidirectional gas flow sensor is installed at the connection between the atomizing cup and the atomizing mask of the atomizing assembly and is connected to the control core in the atomizing host. The atomizing assembly includes an atomizing connecting tube, an atomizing cup, and an atomizing mask; wherein, the outlet of the atomizing cup is connected to the atomizing mask, the first end of the atomizing connecting tube is connected to the inlet of the atomizing cup, and the second end of the atomizing connecting tube is connected to the air pump of the atomizing host.

[0012] The atomizer includes a control core, an air pump, an LCD display, and an atomization mode switching button. The control core is connected to the air pump, the LCD display, and the atomization mode switching button. The air pump receives air pump speed signals from the control core. The LCD display displays the data received from the control core. The atomization mode switching button sends the atomization mode to the control core.

[0013] Preferably, the control core includes: a mode control module, a respiratory airflow sampling value filtering module, a respiratory state recognition module, an inspiratory average airflow module, and a PID control module.

[0014] The mode control module is connected to the breathing airflow sampling value filtering module, the breathing state recognition module, the inspiratory average airflow module and the PID control module. Based on the nebulization mode received from the nebulization mode switching button, it controls the airflow acquisition module, the breathing airflow sampling value filtering module, the inspiratory average airflow module and the PID control module to realize different nebulization modes. The respiratory airflow sampling value filtering module obtains respiratory airflow sampling values ​​from a bidirectional gas flow sensor and uses an amplitude limiting filtering algorithm to filter out abnormal data in the gas flow sampling values ​​to obtain the effective respiratory airflow value. The breathing state recognition module identifies the corresponding sampling time as either inhalation or exhalation state based on the effective value of the respiratory airflow. The average inspiratory flow rate module calculates the average inspiratory flow rate over multiple respiratory cycles; The PID control module outputs the air pump speed based on the received instantaneous air pump flow rate; Preferably, the mode control module includes two modes: a breathing airflow following control mode and an adaptive tidal volume control mode. When the nebulization mode received by the mode control module is the breathing airflow following control mode, the output of the breathing airflow sampling value filtering module is sent to the breathing state recognition module. Based on the recognition result of the breathing state recognition module, the PID control module is directly controlled to output the stop air pump, or the breathing airflow sampling value is used as the instantaneous flow rate of the air pump and input to the PID control module, and the PID control module outputs the air pump speed. When the atomization mode received by the mode control module is the adaptive tidal volume control mode, the output of the breathing airflow sampling value filtering module is sent to the breathing state recognition module. Based on the recognition result of the breathing state recognition module, the average inspiratory airflow module calculates the average inspiratory airflow and uses the average inspiratory airflow as the instantaneous flow rate of the air pump to the PID control module. The PID control module outputs the air pump speed.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Based on experimental calibration data and PID control algorithms, this invention proposes two adaptive nebulization mode control strategies: tidal volume adaptive and respiratory air flow following, as well as a mask dislodgement detection method. These strategies achieve matching between the nebulizer spray volume and respiratory air flow during nebulization, effectively reducing drug waste and providing new ideas for developing personalized clinical nebulization protocols.

[0016] 2. This invention integrates two nebulization modes, tidal volume adaptive and breathing air flow following, into the same device, and both are controlled using the same PID control model. During operation, the appropriate mode can be selected as needed without changing the device, which greatly improves the ease of use of the device. Attached Figure Description

[0017] Figure 1 This is a flowchart illustrating the steps of the adaptive atomization method based on air pump control according to the present invention. Figure 2 This is a flowchart of step four of the adaptive atomization method based on air pump control of the present invention; Figure 3 This is a flowchart of step seven of the adaptive atomization method based on air pump control of the present invention; Figure 4 This invention illustrates the matching of nebulizer spray volume and respiratory airflow volume in the breathing airflow following control mode of the adaptive nebulization method based on air pump regulation. Figure 5 This invention illustrates the matching between the nebulizer spray volume and the respiratory airflow volume in the adaptive tidal volume control mode of the adaptive nebulization method based on air pump regulation. Figure 6 This invention demonstrates the PID control effect of the air pump speed in the adaptive atomization method based on air pump regulation. Figure 7 This is a schematic diagram of the overall structure of the adaptive atomization device based on air pump control according to the present invention; Figure 8 This is a schematic diagram of the internal structure of the atomizing host of the adaptive atomizing device based on air pump control according to the present invention. Figure 9 This is a schematic diagram of the atomizing component structure of the adaptive atomizing device based on air pump control according to the present invention; Figure 10 This is a physical image of the adaptive atomizing device based on air pump control according to the present invention.

[0018] Key reference numerals: 1. Atomizing main unit; 2. Atomizing components; 3. Two-way gas flow sensor; 11. Control core; 12. Air pump; 13. Atomization mode switch button; 14. LCD display screen; 21. Atomizing connecting tube; 22. Atomizing cup; 23. Atomizing mask. Detailed Implementation

[0019] To fully explain the technical content, objectives, and effects of this invention, the embodiments of this invention will be described in detail below with reference to the accompanying drawings.

[0020] This invention discloses an adaptive atomization method based on air pump regulation, such as... Figures 1-6 As shown, it includes the following steps: S1, collects respiratory airflow sampling values ​​during an instantaneous simulated respiratory cycle; In this embodiment, a breathing simulator is used to simulate breathing by blowing or inhaling air into a nebulized mask. A bidirectional gas flow sensor is used to sample the breathing airflow. When the sampled breathing airflow value is positive, it indicates that the current state is inhalation; when the sampled instantaneous breathing airflow value is negative, it indicates that the current state is exhalation. Based on the breathing airflow sampled values, the simulated breathing is divided into respiratory cycles, with each respiratory cycle consisting of one inhalation and one exhalation.

[0021] The i-th bidirectional gas flow sensor sample obtains the i-th respiratory airflow sampling value. During the simulated inhalation period All are greater than 0, during the simulated exhalation period. All are less than 0.

[0022] S2, filtering out abnormal data in the respiratory airflow sampling values ​​to obtain the effective respiratory airflow value; An amplitude-limiting filtering algorithm is used to filter out abnormal data in the airflow sampling values, specifically: (2); in, Indicates the effective value of respiratory airflow. , Indicates the first , The value of the next respiratory airflow sample. This indicates the maximum allowable error between two samplings; S3, determine the respiratory status based on the effective value of respiratory airflow. If an effective value of respiratory airflow is detected... If a respiratory airflow sampling value is detected, then it is determined that the state is inhalation; If so, then it is determined that this is an exhalation state; S4, Establish a PID control model for the air pump speed and the spray airflow. (1) Construct a calibration model of the air pump speed and the spray airflow of the atomizing component. The control core collects the spray airflow output by the air pump to the atomizing component from the minimum to the maximum value through a gas flow sensor, and simultaneously records the air pump speed at the corresponding flow rate. The specific calibration is as follows: (3); in, Indicates the target speed of the air pump. This indicates the instantaneous flow rate of the air pump. The first calibration coefficient, This is the second calibration coefficient. and Determined through fitting, It is a time variable.

[0023] (2) Establish a PID control model for the air pump speed and the spray airflow of the atomizing component. The PID control model uses a digital discrete incremental PID algorithm, specifically: (4); in, This indicates the output air pump speed. , , These represent the target speed and the actual speed of the air pump, respectively. , , Error value , , These are the first, second, and third coefficients of the PID control model.

[0024] The nebulization effect is optimal when the real-time respiratory airflow collected by the gas flow sensor equals the atomizing airflow from the nebulizer. Therefore, the goal of PID closed-loop control is to achieve PID closed-loop control between the respiratory airflow and the pump speed, i.e., the instantaneous flow rate of the pump. This refers to the target value of the atomizing component's spray airflow and the air pump speed. It must equal the target speed of the air pump. . : S5, Get Atomizer Working Mode The nebulizer's operating modes include either a breath airflow following control mode or an adaptive tidal volume control mode. When the nebulizer's operating mode is the breath airflow following control mode, step S6 is executed; when the nebulizer's operating mode is the adaptive tidal volume control mode, step S7 is executed. S6, Breathing airflow follow-up control mode S61: Execute S1 to obtain the respiratory airflow sampling value; execute S2 to obtain the filtered respiratory airflow sampling value. Execute S3 to determine if it is in an inhalation state; if so, execute S62; otherwise, execute S63. S62, execute S4, will As the instantaneous flow rate of the air pump The target air pump speed is obtained through equation (3). , will the current As the first The target speed of the secondary pump is sent to the PID control model, and the PID control model obtains the output pump speed V according to equation (4). OUT The PID control model controls the air pump of the atomizing device at V OUT Working at a speed of [speed], completing the [number]th [stage]. The air pump control of the secondary atomizing device returns to S61; S63, stop the air pump, return to S61.

[0025] As described in steps S61-S63, the breathing airflow following control mode continuously adjusts the pump speed of the nebulizer multiple times during each inhalation using a PID control model, ensuring that the spray volume of the nebulizer matches the inhalation airflow in real time. The pump stops working during each exhalation and resumes operation during the next inhalation.

[0026] S7, Adaptive Tidal Volume Control Mode S71: Execute S1 to obtain the respiratory airflow sampling value; execute S2 to obtain the filtered respiratory airflow sampling value. Execute S3 to determine if it is in an inhalation state. S72, integrate the respiratory airflow sampling values ​​during the inspiratory phase across multiple respiratory cycles to obtain the total tidal volume for the entire inspiratory phase, and then divide by the total duration of the corresponding inspiratory phase to obtain the corresponding average inspiratory flow rate, specifically: (6); in, This represents the average inspiratory flow rate over multiple respiratory cycles. It represents the total tidal volume during the inspiratory phase across multiple respiratory cycles. This represents the effective value of respiratory airflow in a single sampling. Indicates the sampling period. This represents the total duration of inspiratory breathing over multiple respiratory cycles, where n represents the number of times the inspiratory state was sampled over multiple respiratory cycles. S73, As the instantaneous flow rate of the air pump The target air pump speed is obtained through equation (3). , will the current As the first The target speed of the secondary pump is sent to the PID control model, and the PID control model obtains the output pump speed V according to equation (4). OUT The PID control model controls the air pump of the atomizing device at V OUT Working at a speed of [speed], completing the [number]th [stage]. Air pump control for the secondary atomizing device; S74. If the average inspiratory flow rate is 0 for several consecutive breathing cycles, it is determined that the person is removed from the nebulizer mask and nebulization stops.

[0027] As can be seen from the steps described in S71-S73, the adaptive tidal volume control mode uses a PID control model to regulate the air pump speed of the nebulizer within each breathing cycle, thereby achieving the matching of the average spray airflow and the average inspiratory airflow within the breathing cycle.

[0028] This invention also discloses an adaptive atomizing device based on air pump regulation, such as... Figures 7-10 As shown, it includes an atomizing main unit 1, an atomizing component 2, and a bidirectional gas flow sensor 3; wherein the bidirectional gas flow sensor is installed in the atomizing component, and the atomizing main unit is connected to both the atomizing component and the bidirectional gas flow sensor, specifically: The bidirectional gas flow sensor 3 is a sensor capable of simultaneously detecting both forward and reverse gas flow. It is installed at the connection point between the atomizing cup and the atomizing mask in the nebulizer assembly and is connected to the control core in the nebulizer unit. When the bidirectional gas flow sensor senses reverse gas flow, the polarity of its output electrical signal also reverses, thus determining the flow direction. Breathing airflow sampling values ​​are obtained through the bidirectional gas flow sensor.

[0029] The atomizing component 2 includes an atomizing connecting tube 21, an atomizing cup 22, and an atomizing mask 23; wherein, the outlet of the atomizing cup is connected to the atomizing mask, the first end of the atomizing connecting tube is connected to the inlet of the atomizing cup, and the second end of the atomizing connecting tube is connected to the air pump of the atomizing host.

[0030] The atomizing host 1 includes a control core 11, an air pump 12, an atomization mode switching button 13, and an LCD display screen 14; wherein the control core is connected to the air pump, the LCD display screen, and the atomization mode switching button respectively; the air pump receives the air pump speed from the control core; the LCD display screen displays the data received from the control core; and the atomization mode switching button sends the atomization mode to the control core.

[0031] The control core 11 includes at least a mode control module, a respiratory airflow sampling value filtering module, a respiratory state recognition module, an inspiratory average airflow module, and a PID control module.

[0032] The mode control module is connected to the breathing airflow sampling value filtering module, the breathing state recognition module, the inspiratory average airflow module, and the PID control module. Based on the nebulization mode received from the nebulization mode switching button, the mode control module controls the airflow acquisition module, the breathing airflow sampling value filtering module, the inspiratory average airflow module, and the PID control module to realize different nebulization modes. In this embodiment, the nebulization modes include breathing airflow following control mode and adaptive tidal volume control mode.

[0033] The breathing airflow sampling value filtering module obtains breathing airflow sampling values ​​from a bidirectional gas flow sensor and uses an amplitude limiting filtering algorithm to filter out abnormal data in the gas flow sampling values ​​to obtain the effective breathing airflow value.

[0034] The breathing state recognition module identifies the corresponding sampling time as either inhalation or exhalation state based on the effective value of the breathing airflow.

[0035] The average inspiratory flow rate module calculates the average inspiratory flow rate over multiple respiratory cycles.

[0036] The PID control module outputs the air pump speed based on the received instantaneous air pump flow rate.

[0037] When the nebulization mode received by the mode control module is the breathing airflow following control mode, the output of the breathing airflow sampling value filtering module is sent to the breathing state recognition module. Based on the recognition result of the breathing state recognition module, the PID control module is directly controlled to stop the air pump or the breathing airflow sampling value is used as the instantaneous flow rate of the air pump and input to the PID control module. The PID control module outputs the air pump speed.

[0038] When the atomization mode received by the mode control module is the adaptive tidal volume control mode, the output of the breathing airflow sampling value filtering module is sent to the breathing state recognition module. Based on the recognition result of the breathing state recognition module, the average inspiratory airflow module calculates the average inspiratory airflow and uses the average inspiratory airflow as the instantaneous flow rate of the air pump to the PID control module. The PID control module outputs the air pump speed.

[0039] Furthermore, the atomizing host may also include a voice broadcast module 15, which is connected to the control core and used to broadcast alarm information.

[0040] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. An adaptive atomization method based on air pump regulation, characterized in that the steps include... include: S1. Obtain the sampled value of respiratory airflow at the instant of the simulated respiratory cycle; S2. Filtering out abnormal data in the respiratory airflow sampling values ​​to obtain the effective respiratory airflow value. ; S3. Determine the respiratory status based on the effective value of respiratory airflow. If an effective value of respiratory airflow is detected... If it is, then it is determined to be an inhalation state; otherwise, it is determined to be an exhalation state. S4. Establish a PID control model for the air pump speed and the spray airflow; S5. Determine the atomizer operating mode: When the nebulizer is in the breathing airflow following control mode, execute step S6; when the nebulizer is in the adaptive tidal volume control mode, execute step S7. S6, Breathing airflow follow-up control mode; S61. Execute S1 to obtain the respiratory airflow sampling value, and execute S2 to obtain the effective respiratory airflow value. Execute S3 to determine if it is in an inhalation state; if so, execute S62; otherwise, execute S63. S62, Execute S4, As the instantaneous flow rate of the air pump The signal is sent to the PID control model, which then outputs the air pump speed V. OUT Control the air pump to operate, then return to S61; S63, Stop the air pump and return to S61; S7, Adaptive tidal volume control mode; S71. Execute S1 to obtain the respiratory airflow sampling value, and execute S2 to obtain the filtered respiratory airflow sampling value. Execute S3 to determine if it is in an inhalation state. S72. Integrate the respiratory airflow sampling values ​​during the inspiratory phase across multiple respiratory cycles to obtain the total tidal volume for the entire inspiratory phase, and then divide by the total duration of the corresponding inspiratory phase to obtain the corresponding average inspiratory flow rate. ; S73, will As the instantaneous flow rate of the air pump The corresponding target air pump speed is obtained. , will the current As the first The target speed of the secondary pump is sent to the PID control model to obtain the output pump speed V. OUT The PID control model controls the air pump at V OUT Working at a speed of [speed], completing the [number]th [stage]. Air pump control for the secondary atomizing device; S74. If the average inspiratory flow rate is 0 for several consecutive breathing cycles, it is determined that the person is removed from the nebulizer mask and nebulization is stopped; otherwise, return to S71.

2. The adaptive atomization method based on air pump control according to claim 1, characterized in that, S1 involves acquiring the sampled respiratory airflow value at the instant of the simulated respiratory cycle, specifically as follows: Breathing is simulated by blowing or inhaling air into a nebulized mask using a breathing simulator. Instantaneous respiratory airflow samples are obtained using a bidirectional gas flow sensor, with forward airflow simulating inhalation and reverse airflow simulating exhalation. The i-th respiratory airflow sample is obtained from the bidirectional gas flow sensor sampling. During the simulated inhalation period All are greater than or equal to 0 during the simulated exhalation period. All are less than 0.

3. The adaptive atomization method based on air pump control according to claim 1, characterized in that, S2 filters out abnormal data in the respiratory airflow sampling values, specifically as follows: An amplitude-limiting filtering algorithm is used to filter out abnormal data in the airflow sampling values: ； in, Indicates the effective value of respiratory airflow. and They represent the first and The value of the next respiratory airflow sample. This indicates the maximum allowable error between two samples.

4. The adaptive atomization method based on air pump control according to claim 1, characterized in that, In step S4, a PID control model is established for the air pump speed and the spray airflow, specifically as follows: S41. Construct a calibration model for the air pump speed and the spray airflow of the atomizing component, specifically calibrating as follows: ； in, Indicates the target speed of the air pump. This indicates the instantaneous flow rate of the air pump. The first calibration coefficient, This is the second calibration coefficient. and Determined through fitting, It is a time variable; S42. Establish a PID control model for the air pump speed and the spray airflow of the atomizing component, specifically as follows: ； in, This indicates the output air pump speed. , and These represent the target speed and the actual speed of the air pump, respectively. , and Error value , and These are the first, second, and third coefficients of the PID control model; S43, The target of PID closed-loop control is the air pump speed. Equal to the target speed of the air pump .

5. The adaptive atomization method based on air pump control according to claim 4, characterized in that, Specifically, S62 involves executing S4, and... As the instantaneous flow rate of the air pump The corresponding target air pump speed is obtained. , will the current As the first The target speed of the secondary pump is sent to the PID control model, and the output pump speed V is obtained through the PID control model. OUT The PID control model controls the air pump of the atomizing device at V OUT Working at a speed of [speed], completing the [number]th [stage]. The air pump control of the secondary atomizing device returns to S61.

6. The adaptive atomization method based on air pump regulation according to claim 4, characterized in that, The average inhalation airflow rate in S72 is specifically as follows: ； in, This represents the average inspiratory flow rate over multiple respiratory cycles. It represents the total tidal volume during the inspiratory phase across multiple respiratory cycles. This represents the effective value of respiratory airflow in a single sampling. Indicates the sampling period. This represents the total duration of inspiratory breathing over multiple respiratory cycles, and n represents the number of times the inspiratory state was sampled over multiple respiratory cycles.

7. An adaptive drug nebulizer for air pump regulation, characterized in that, include: The system comprises an atomizing main unit, an atomizing assembly, and a bidirectional gas flow sensor; the bidirectional gas flow sensor is installed in the atomizing assembly, and the atomizing main unit is connected to both the atomizing assembly and the bidirectional gas flow sensor, specifically as follows: The bidirectional gas flow sensor is a sensor that can simultaneously detect both forward and reverse gas flow. The bidirectional gas flow sensor is installed at the connection between the atomizing cup and the atomizing mask of the atomizing assembly and is connected to the control core in the atomizing host. The atomizing assembly includes an atomizing connecting tube, an atomizing cup, and an atomizing mask; wherein, the outlet of the atomizing cup is connected to the atomizing mask, the first end of the atomizing connecting tube is connected to the inlet of the atomizing cup, and the second end of the atomizing connecting tube is connected to the air pump of the atomizing host. The atomizer includes a control unit, an air pump, an LCD display, and an atomization mode switching button; The control core is connected to the air pump, LCD display, and atomization mode switching button. The air pump receives the air pump speed signal from the control core. The LCD display shows the data received from the control core. The atomization mode switching button sends the atomization mode to the control core.

8. The adaptive drug nebulizer for air pump regulation according to claim 7, characterized in that, The control core includes: The module includes a mode control module, a respiratory airflow sampling value filtering module, a respiratory state recognition module, an average inspiratory airflow module, and a PID control module. The mode control module is connected to the breathing airflow sampling value filtering module, the breathing state recognition module, the inspiratory average airflow module and the PID control module. Based on the nebulization mode received from the nebulization mode switching button, it controls the airflow acquisition module, the breathing airflow sampling value filtering module, the inspiratory average airflow module and the PID control module to realize different nebulization modes. The respiratory airflow sampling value filtering module obtains respiratory airflow sampling values ​​from a bidirectional gas flow sensor and uses an amplitude limiting filtering algorithm to filter out abnormal data in the gas flow sampling values ​​to obtain the effective respiratory airflow value. The breathing state recognition module identifies the corresponding sampling time as either inhalation or exhalation state based on the effective value of the respiratory airflow. The average inspiratory flow rate module calculates the average inspiratory flow rate over multiple respiratory cycles; The PID control module outputs the air pump speed based on the received instantaneous air pump flow rate.

9. The adaptive drug nebulizer for air pump regulation according to claim 8, characterized in that, The mode control module includes two modes: a breathing airflow following control mode and an adaptive tidal volume control mode. When the nebulization mode received by the mode control module is the breathing airflow following control mode, the output of the breathing airflow sampling value filtering module is sent to the breathing state recognition module. Based on the recognition result of the breathing state recognition module, the PID control module is directly controlled to output the stop air pump, or the breathing airflow sampling value is used as the instantaneous flow rate of the air pump and input to the PID control module, and the PID control module outputs the air pump speed. When the atomization mode received by the mode control module is the adaptive tidal volume control mode, the output of the breathing airflow sampling value filtering module is sent to the breathing state recognition module. Based on the recognition result of the breathing state recognition module, the average inspiratory airflow module calculates the average inspiratory airflow and uses the average inspiratory airflow as the instantaneous flow rate of the air pump to the PID control module. The PID control module outputs the air pump speed.

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