A mesh atomizer

Abstract

The present invention provides a mesh nebulizer, comprising: a spray port, a piezoelectric mesh atomizer, an atomizer cup, a pressure sensor, and a main control board located inside a protective shell; the pressure sensor is used to collect the air pressure value at the spray port and send the air pressure value to the main control board; the main control board controls the working state of the piezoelectric mesh atomizer according to the air pressure value to determine the atomization state of the liquid medicine in the atomizer cup flowing toward the spray port. The mesh nebulizer provided by the present invention uses a pressure sensor to collect the air pressure value at the spray port, thereby determining the real-time breathing state of the patient, and there is no influence of unreliable factors caused by indirect monitoring of other non-respiratory parameters, so as to realize the function of atomizing and maintaining during inhalation and stopping atomization during exhalation, which can improve the comfort of the patient during atomization, reduce the waste of liquid medicine, and reduce the pollution of the medicine to the environment, and has reliable performance and low cost.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a mesh atomizer. Background Art

[0002] Nebulization is an effective way to treat respiratory diseases such as acute upper respiratory tract inflammation, acute and chronic tracheitis, bronchitis, sore throat, etc.

[0003] At present, most of the nebulizers sold on the market are continuous sprayers. During the nebulizer treatment, the atomized drug particles fly out through the mask air holes when the patient exhales, which not only wastes the drug and reduces the efficacy, but also causes certain pollution to the environment.

[0004] Some nebulizers claim to have a surge function, but it is just that the nebulizer itself has a fluctuating atomization rate process and will not actively identify the user's breathing status. Therefore, it has no practical significance during the nebulization inhalation treatment. Instead, it will reduce the user's comfort during the nebulization inhalation treatment.

[0005] There are also nebulizers that achieve atomization adjustment by mechanical means, such as adding a movable membrane flap of elastic material at the spray nozzle, in combination with a position sensor to enable the patient to adjust the atomization amount during the exhalation and inhalation process. The nebulizer cup of this method has a complex structure, but the nebulizer cup needs to be cleaned and disinfected before and after each use, so the actual operation is relatively cumbersome. The device is highly conceptual and not easy to promote.

[0006] The atomization rate change function of some atomizer devices relies on the patient to adjust his or her own breathing state to passively adapt to the atomizer. This method reduces the patient's comfort during atomization inhalation, especially for young children, and cannot guarantee full cooperation. There are also a few atomizers that can identify the user's breathing state, but they use differential pressure sensors inside, which are expensive and difficult to popularize. Summary of the invention

[0007] In view of the deficiencies in the prior art, an embodiment of the present invention provides a mesh atomizer.

[0008] The present invention provides a mesh atomizer, comprising: a spray port, a piezoelectric mesh atomizer sheet, an atomizer cup, a pressure sensor, and a main control board located inside a protective shell; the pressure sensor is used to collect the air pressure value at the spray port and send the air pressure value to the main control board; the main control board controls the working state of the piezoelectric mesh atomizer sheet according to the air pressure value to determine the atomization state of a medicine liquid located in the atomizer cup flowing toward the spray port.

[0009] According to a mesh nebulizer provided by the present invention, the main control board includes: a pressure value acquisition module, a pressure value storage module, a standard air pressure value determination module, a real-time air pressure value comparison module and an atomization drive control module; when the mesh nebulizer is in working mode, the pressure value acquisition module is used to drive the pressure sensor to collect the air pressure value at the spray port at a preset time interval; the pressure value storage module is used to receive and store the air pressure value uploaded by the pressure sensor; the standard air pressure value determination module is used to determine the standard reference air pressure value according to the air pressure value stored in the pressure value storage module; the standard reference air pressure value is the air pressure value when the user is in a non-breathing state; the real-time air pressure value comparison module is used to generate a start-stop control instruction according to the comparison relationship between the current real-time air pressure value collected by the pressure sensor and the standard reference air pressure value; the atomization drive control module is used to execute the start-stop control instruction to control the working state of the piezoelectric mesh atomizer.

[0010] According to a mesh atomizer provided by the present invention, after power-on initialization and before the mesh atomizer is put into use, a standard air pressure value determination module is used to determine a standard reference air pressure value according to the air pressure value stored in the pressure value storage module, specifically comprising: step 1: collecting N consecutive air pressure values ​​uploaded by the pressure sensor at a preset time interval, and determining the maximum air pressure and the minimum air pressure among the N air pressure values; step 2: when the difference between the maximum air pressure and the minimum air pressure among the N air pressure values ​​is less than a first threshold value, storing the N air pressure values ​​in the pressure value storage module; step 3: determining the standard reference air pressure value according to the N air pressure values.

[0011] According to a mesh atomizer provided by the present invention, after the standard reference air pressure value has been determined, the standard air pressure value determination module iteratively executes steps 1 to 2 before the mesh atomizer is put into use each time, until the number of air pressure values ​​stored in the pressure value storage module is M, M>N; the M air pressure values ​​are sorted from small to large, and the maximum air pressure and the minimum air pressure among the M air pressure values ​​are calculated; when the difference between the maximum air pressure and the minimum air pressure among the M air pressure values ​​is less than a second threshold value, the standard reference air pressure value is re-determined based on the M air pressure values.

[0012] According to a mesh atomizer provided by the present invention, the real-time air pressure value comparison module is used to generate a start-stop control instruction based on the comparison relationship between the current real-time air pressure value collected by the pressure sensor and the standard reference air pressure value, specifically including: when it is confirmed that the current real-time air pressure value is less than the difference between the standard reference air pressure value and the second threshold value, the start-stop control instruction is a start atomization instruction; when it is confirmed that the current real-time air pressure value is greater than the sum of the standard reference air pressure value and the second threshold value, the start-stop control instruction is a stop atomization instruction; when it is confirmed that the current real-time air pressure value is not less than the difference between the standard reference air pressure value and the second threshold value or the current real-time air pressure value is not greater than the sum of the standard reference air pressure value and the second threshold value, the start-stop control instruction is empty.

[0013] According to a mesh nebulizer provided by the present invention, the first threshold value and the second threshold value are determined based on the respiratory pressure curve under different respiratory states; the first threshold value and the second threshold value are both less than half of the difference between the maximum air pressure and the minimum air pressure determined by the respiratory pressure curve under the weak respiratory state.

[0014] According to a mesh atomizer provided by the present invention, in the process of determining the first threshold and the second threshold, the method further includes: determining the height difference of the measured people to determine the air pressure change value according to the height difference; and determining the first threshold and the second threshold in combination with the air pressure change value.

[0015] A mesh nebulizer provided according to the present invention also includes: an operating state switching switch; the operating state switching switch is used to switch the working mode of the mesh nebulizer; the working modes include a continuous atomization state and a breathing synchronized atomization mode; in the continuous atomization state mode, the main control board controls the piezoelectric mesh atomization piece to be continuously turned on; in the breathing synchronized atomization mode, the main control board controls the working state of the piezoelectric mesh atomization piece according to the air pressure value.

[0016] A mesh atomizer provided according to the present invention also includes: a DC power supply module, which is used to supply power to the mesh atomizer; the DC power supply supports external AC power or battery power supply.

[0017] According to the mesh atomizer provided by the present invention, the sampling probe of the pressure sensor is connected to the spray port through a hose.

[0018] The present invention also provides a mesh nebulizer control method, comprising: driving a pressure sensor to collect air pressure values ​​at a spray port at preset time intervals; receiving and storing air pressure values ​​uploaded by the pressure sensor; determining a standard reference air pressure value based on the air pressure values ​​stored in a pressure value storage module; the standard reference air pressure value is the air pressure value when the user is in a non-breathing state; generating a start-stop control instruction based on a comparison relationship between a current real-time air pressure value collected by the pressure sensor and the standard reference air pressure value; and executing the start-stop control instruction to control the working state of the piezoelectric mesh nebulizer.

[0019] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of any of the above-mentioned mesh atomizer control methods are implemented.

[0020] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the mesh atomizer control method as described in any one of the above are implemented.

[0021] The mesh nebulizer provided by the present invention utilizes a pressure sensor to collect the air pressure value at the spray port, thereby determining the real-time breathing state of the patient, without the influence of unreliable factors caused by indirect monitoring of other non-respiratory parameters, so as to realize the functions of atomization and maintenance during inhalation and stopping atomization during exhalation, thereby improving the patient's comfort during atomization, reducing the waste of liquid medicine, and reducing the pollution of the medicine to the environment, and has reliable performance and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are 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 It is a structural schematic diagram of the mesh atomizer provided by the present invention;

[0024] Figure 2 It is a schematic diagram of the working principle of the mesh atomizer provided by the present invention;

[0025] Figure 3 It is a schematic flow chart of the mesh atomizer control method provided by the present invention;

[0026] Figure 4 It is a respiratory pressure curve graph under weak breathing state;

[0027] Figure 5 It is a respiratory pressure curve under normal breathing state;

[0028] Figure 6 It is a respiratory pressure curve graph under deep breathing state;

[0029] Figure 7 is a schematic diagram of the structure of an electronic device provided by the present invention;

[0030] Wherein, the accompanying drawings are marked as follows:

[0031] 1: Spray port; 2: Piezoelectric mesh atomizer; 3: Atomizer cup;

[0032] 4: Pressure sensor; 5: Front shell 6: Back shell

[0033] 7: Main control board 8: Operation status switch 9: Power module

[0034] 10: Hose 11: Reserved air path DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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.

[0036] It should be noted that in the description of the embodiments of the present invention, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, article or device. In the absence of further restrictions, the elements defined by the sentence "include one..." do not exclude the existence of other identical elements in the process, article or device including the elements. The orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Combine the following Figure 1-Figure 7 The mesh atomizer and the control method thereof provided by the embodiments of the present invention are described.

[0038] Figure 1 Schematic diagram of the structure of the mesh atomizer provided by the present invention, such as Figure 1As shown, it includes but is not limited to: a spray port 1, a piezoelectric mesh atomizer 2, an atomizer cup 3, a pressure sensor 4, and a main control board 7 located inside the protective shell; the pressure sensor 4 is used to collect the air pressure value at the spray port 1 and send the air pressure value to the main control board 7; the main control board 7 controls the working state of the piezoelectric mesh atomizer 2 according to the air pressure value to determine the atomization state of the liquid medicine located in the atomizer cup 3 flowing to the spray port.

[0039] The present invention provides a mesh atomizer, which realizes the identification of the current breathing state of a user by using the air pressure value at the spray port collected by a pressure sensor, so as to realize the functions of atomizing and maintaining when the user inhales, and stopping atomizing when the user exhales.

[0040] When a user uses the mesh nebulizer provided by the present invention for nebulization treatment, the working principle of the entire nebulizer and its execution actions may include the following:

[0041] First, when the user decides to perform atomization, the power is turned on, and the mesh atomizer automatically performs power-on initialization. After the power-on initialization is completed and before the mesh atomizer is put into use, the pressure sensor 4 is used to detect the air pressure value at the spray port 1 as the standard reference air pressure value. The standard reference air pressure value at this time is also the atmospheric pressure value of the mesh atomizer in the current use environment. The standard reference air pressure value will be used as the basis for judging the user's breathing state in the future.

[0042] Then, during actual use by the user, the pressure sensor 4 is controlled to collect the air pressure value at the spray port 1 in real time according to the preset time interval to obtain the current real-time air pressure value of the user. It should be pointed out that in order to improve the measurement accuracy of the mesh atomizer provided in this application, the above-mentioned preset time interval needs to be much smaller than the user's breathing time interval. For example, if the user breathes 60 times per minute, the time interval between two adjacent breaths is 1s, so the setting of the above-mentioned preset time interval needs to be much smaller than 1s, such as 100ms.

[0043] Furthermore, the current real-time air pressure value collected at any moment is compared with the previously predetermined standard reference air pressure value, so as to determine the current breathing state of the user according to the air pressure value comparison result.

[0044] When the user inhales normally, the air pressure value detected by the pressure sensor will be lower than the standard reference air pressure value; and when the user exhales normally, the air pressure value detected by the pressure sensor will be higher than the standard reference air pressure value. Therefore, it is possible to determine whether the user is in the exhalation state or the inhalation state based on the difference between the current real-time air pressure value and the standard reference air pressure value.

[0045] With its small size, it is easy to carry, convenient to use and completely silent when in use.

[0046] Furthermore, when it is determined that the user's breathing state is in the inhalation state, the piezoelectric mesh atomizer 2 can be controlled to be energized, so that the high-frequency vibration of the piezoelectric ceramic sheet therein directly drives the microporous plate to deform, so that the liquid medicine in contact with the microporous plate is atomized from the microporous plate to form a spray effect.

[0047] When it is determined that the user's breathing state is in the exhalation state, the piezoelectric mesh atomizing sheet 2 can be controlled to lose power to stop spraying.

[0048] The mesh nebulizer provided by the present invention utilizes a pressure sensor to collect the air pressure value at the spray port, thereby determining the real-time breathing state of the patient, without the influence of unreliable factors caused by indirect monitoring of other non-respiratory parameters, so as to realize the functions of atomization and maintenance during inhalation and stopping atomization during exhalation, thereby improving the patient's comfort during atomization, reducing the waste of liquid medicine, and reducing the pollution of the medicine to the environment, and has reliable performance and low cost.

[0049] Based on the content of the above embodiment, as an optional embodiment, the main control board includes: a pressure value acquisition module, a pressure value storage module, a standard air pressure value determination module, a real-time air pressure value comparison module and an atomization drive control module.

[0050] When the mesh nebulizer is in working mode, the pressure value acquisition module is used to drive the pressure sensor to collect the air pressure value at the spray port at a preset time interval; the pressure value storage module is used to receive and store the air pressure value uploaded by the pressure sensor; the standard air pressure value determination module is used to determine the standard reference air pressure value according to the air pressure value stored in the pressure value storage module; the standard reference air pressure value is the air pressure value when the user is in a non-breathing state; the real-time air pressure value comparison module is used to generate a start-stop control instruction according to the comparison relationship between the current real-time air pressure value collected by the pressure sensor and the standard reference air pressure value; the atomization drive control module is used to execute the start-stop control instruction to control the working state of the piezoelectric mesh atomizer.

[0051] In the mesh atomizer provided by the present invention, the main control board 7 is placed inside the protective shell, wherein the protective shell is composed of a front shell 5 and a rear shell 6. The main control board 7 serves as the control center of the entire mesh atomizer, and is mainly responsible for controlling the pressure sensor to collect the air pressure value at the spray port; receiving, storing, and calculating the collected air pressure value, so as to control the working state of the piezoelectric mesh atomizer in real time according to the calculation result, so as to achieve the purpose of controlling the start and stop of the mesh atomizer.

[0052] Figure 2 Schematic diagram of the working principle of the mesh atomizer provided by the present invention. Figure 2 As shown, first, before the mesh atomizer is put into use, the pressure value acquisition module acquires the initial pressure (atmospheric pressure) to determine the standard reference air pressure value.

[0053] After the mesh atomizer is put into use, the real-time pressure at the spray port is collected in real time and the collected pressure data is stored. Then, the stored real-time pressure is used to determine whether to update the standard reference air pressure value; on the basis of determining that the standard reference air pressure value does not need to be updated, the user's breathing state is determined according to the current real-time air pressure value to realize atomization drive control.

[0054] Specifically, the pressure value acquisition module is mainly responsible for sending a data acquisition instruction to the pressure sensor 4 once in each preset interval, and obtaining the air pressure at the spray outlet fed back by the pressure sensor 4. The pressure sensor 4 is connected to the pressure value acquisition module via SPI communication to upload the collected air pressure value to the pressure value acquisition module.

[0055] The pressure value storage module is mainly responsible for receiving all air pressure values ​​transmitted from the pressure value acquisition module and storing them for calling by the standard air pressure value determination module or the real-time air pressure value comparison module.

[0056] The standard air pressure value determination module is mainly responsible for confirming whether the data currently stored in the pressure value storage module meets the standard atmospheric pressure (i.e., standard reference air pressure value) judgment standard. If it does, the standard reference air pressure value is updated; if it does not, the pressure value acquisition module continues to collect new air pressure values.

[0057] The real-time air pressure comparison module is mainly responsible for judging whether the current real-time air pressure value collected by the pressure sensor meets the conditions for controlling the start and stop of the nebulizer. It mainly compares the current real-time air pressure value with the standard reference air pressure value to judge the user's current breathing state.

[0058] The atomization drive control module mainly performs atomization start and stop control based on the judgment result of the real-time pressure judgment module (i.e. the user's current breathing state).

[0059] The mesh nebulizer provided by the present invention adopts a relatively low-priced pressure sensor to realize the function of actively identifying the patient's breathing state, and can accurately realize the function of the mesh nebulizer automatically starting and stopping atomization according to the patient's breathing, thereby improving the detection accuracy.

[0060] Based on the content of the above embodiment, as an optional embodiment, after the power-on initialization and before the mesh atomizer is put into use, the standard air pressure value determination module is used to determine the standard reference air pressure value according to the air pressure value stored in the pressure value storage module, specifically including:

[0061] Step 1: collecting N consecutive air pressure values ​​uploaded by the pressure sensor at the preset time interval, and determining the maximum air pressure value and the minimum air pressure value among the N air pressure values;

[0062] Step 2: When the difference between the maximum air pressure value and the minimum air pressure value among the N air pressure values ​​is less than a first threshold value, storing the N air pressure values ​​in the pressure value storage module;

[0063] Step 3: Determine the standard reference air pressure value according to the N air pressure values.

[0064] Figure 3 Schematic diagram of the working principle of the mesh atomizer provided by the present invention. Figure 3 As shown, taking N as 5 and the preset time interval T as 200ms as an example, the following description is given:

[0065] After the mesh atomizer has completed the power-on initialization, in step 1, the pressure sensor 4 is first used to collect 5 air pressure values ​​at a sampling frequency of once every 200 ms, and the above 5 air pressure values ​​are sent to the main control board 7 in the form of SPI communication.

[0066] Then, it is determined whether the above five air pressure values ​​meet the preset standard reference air pressure value determination condition. The standard reference air pressure value determination condition means that the difference between the maximum and minimum values ​​of the above five consecutive air pressure values ​​must be lower than a first threshold value, which can be determined based on actual tests to ensure that the standard reference air pressure value determined by the five consecutive air pressure values ​​can represent the atmospheric pressure value of the mesh atomizer in the current state.

[0067] When it is determined that the five air pressure values ​​meet the preset standard reference air pressure value judgment condition, the standard reference air pressure value can be determined based on the five air pressure values.

[0068] Optionally, the average of the five air pressure values ​​may be used as the standard reference air pressure value; or the five air pressure values ​​may be sorted from small to large, and then the air pressure value in the middle may be used as the standard reference air pressure.

[0069] The mesh nebulizer provided by the present invention first determines a standard reference air pressure before the mesh nebulizer is put into use. After the mesh nebulizer is put into use, the standard reference air pressure can be used as a reference. The user's breathing state can be accurately judged based on the current real-time air pressure value collected by the pressure sensor and the law of air pressure changes when the user breathes.

[0070] The mesh atomizer provided by the present invention uses a relatively cheap pressure sensor instead of an expensive differential pressure sensor to accurately obtain the magnitude relationship between the air pressure at the spray port and the standard reference air pressure value used as a reference, and can ultimately formulate a start-stop control instruction based on the calculated magnitude relationship. Ultimately, the opening state of the mesh atomizer can be controlled based on the start-stop control instruction.

[0071] Based on the content of the above embodiment, as an optional embodiment, the standard air pressure value determination module, when the standard reference air pressure value has been determined, iteratively executes step 1 to step 2 before the mesh atomizer is put into use each time, until the number of air pressure values ​​stored in the pressure value storage module is M, M>N;

[0072] Sort the M air pressure values ​​from small to large, and calculate the maximum air pressure and the minimum air pressure among the M air pressure values;

[0073] When the difference between the maximum air pressure value and the minimum air pressure value among the M air pressure values ​​is smaller than a second threshold, the standard reference air pressure value is re-determined according to the M air pressure values.

[0074] Based on the contents of the above embodiments, when it is determined that the five air pressure values ​​collected by the pressure sensor meet the preset standard reference air pressure value judgment conditions, on the one hand, the standard reference air pressure value can be determined; on the other hand, the above five air pressure values ​​are stored in the pressure value storage module, and the pressure sensor is controlled to continue to collect the air pressure value at the spray port 1, and the collected air pressure values ​​are gradually stored in the pressure value storage module.

[0075] Assume that M=10, that is, when it is determined that the number of air pressure values ​​stored in the pressure value storage module does not reach 10, the pressure sensor continues to obtain the real-time air pressure value and saves it in the pressure value storage module.

[0076] When it is determined that the number of air pressure values ​​stored in the pressure value storage module reaches 10, the 10 air pressure values ​​are sorted from small to large, and the difference between the maximum value and the minimum value therein is calculated.

[0077] Further, it is determined whether the difference between the maximum value and the minimum value is less than a second threshold.

[0078] When the difference between the maximum value and the minimum value is less than the second threshold, it means that the standard reference air pressure value needs to be re-determined, such as using the fifth air pressure value after sorting as a new standard reference air pressure value to replace the original standard reference air pressure value.

[0079] When the difference between the maximum value and the minimum value is greater than the second threshold, there is no need to update the standard reference air pressure value.

[0080] The mesh atomizer provided by the present invention can automatically calibrate the standard reference air pressure value in real time during the real-time use of the atomizer, such as when the mesh atomizer is used in different locations or when the standard reference air pressure value drifts during long-term use, thereby effectively ensuring its practicality, effectively improving its degree of automation, and providing convenience for user operation.

[0081] Based on the content of the above embodiment, as an optional embodiment, the real-time air pressure value comparison module is used to generate a start-stop control instruction according to the comparison relationship between the current real-time air pressure value collected by the pressure sensor and the standard reference air pressure value, specifically including:

[0082] When it is confirmed that the current real-time air pressure value is less than the difference between the standard reference air pressure value and the second threshold value, the start-stop control instruction is an atomization start instruction;

[0083] When it is confirmed that the current real-time air pressure value is greater than the sum of the standard reference air pressure value and the second threshold value, the start-stop control instruction is an atomization shut-down instruction;

[0084] When it is confirmed that the current real-time air pressure value is not less than the difference between the standard reference air pressure value and the second threshold value or the current real-time air pressure value is not greater than the sum of the standard reference air pressure value and the second threshold value, the start-stop control instruction is empty.

[0085] Specifically, Figure 3 As shown, when it is determined that the difference between the maximum and minimum values ​​of the most recent 10 air pressure values ​​in the pressure value storage module is greater than the second threshold value (that is, after the calibration of the standard reference air pressure value is completed), the pressure sensor collects new data and determines whether the difference between the latest collected current real-time air pressure value and the above-mentioned standard reference air pressure value is greater than the second threshold value, so as to determine the current breathing state of the user according to the current real-time air pressure value, including:

[0086] If the current real-time air pressure value is lower than the difference between the above standard reference air pressure value and the second threshold value, it means that the user is inhaling. At this time, the main control board 7 sends a start atomization instruction to the piezoelectric mesh atomizer 2 to control it to start working and maintain stable output.

[0087] If the current real-time air pressure value is higher than the sum of the above standard reference air pressure value and the second threshold value, the main control board 7 sends a shut-down atomization instruction to the piezoelectric mesh atomization sheet 2 to control it to stop the action.

[0088] If the current real-time air pressure value is between the above two calculation conditions, the start-stop control instruction is empty, that is, the piezoelectric mesh atomizer sheet 2 is kept in the current state.

[0089] It can be seen from the contents of the above embodiments that the mesh nebulizer provided by the invention collects data from a pressure sensor to monitor whether the user is currently in an exhalation or inhalation state, thereby realizing a function of automatically controlling the start and stop of nebulization according to the patient's breathing movements.

[0090] Based on the contents of the above embodiments, as an optional embodiment, the first threshold value and the second threshold value are determined based on the respiratory pressure curve under different respiratory states; the first threshold value and the second threshold value are both less than half of the difference between the maximum air pressure and the minimum air pressure determined by the respiratory pressure curve under a weak respiratory state.

[0091] Since the determination and update of the standard reference air pressure value involves the value of the first threshold, and the analysis of the collected current real-time air pressure value using the standard reference air pressure value to determine the user's breathing state involves the value of the second threshold, therefore, if the specific values ​​of the first threshold and the second threshold are too large or too small, the determination result of the breathing state may not match the actual breathing action of the user, and thus cause the atomizer to make an erroneous spray action.

[0092] The mesh nebulizer provided in the embodiment of the present invention collects respiratory pressure curves of different groups of people during the confirmation process of the above-mentioned first threshold value and the second threshold value, and confirms the first threshold value and the second threshold value through repeated tests using statistical methods.

[0093] Figure 4 This is a respiratory pressure curve under weak breathing state. Figure 5 This is the respiratory pressure curve under normal breathing conditions. Figure 6 It is a respiratory pressure curve under deep breathing state, such as Figure 4-Figure 6 As shown, three types of representative breathing pressure curves can be collected when an adult wears an adult mask.

[0094] It can be seen from the respiratory pressure curve under weak breathing state that the pressure change range of the user during breathing is the smallest, the minimum pressure during inhalation is 102918Pa, and the maximum pressure during exhalation is 102934Pa. The maximum pressure difference of the user during breathing is about 16Pa.

[0095] It can be learned from the respiratory pressure curve under normal breathing state that the minimum pressure when the user inhales is 102882Pa, and the maximum pressure when the user exhales is 102955Pa. Therefore, the maximum pressure difference of the user in this state is about 73Pa.

[0096] It can be seen from the breathing pressure curve in the deep breathing state that the minimum pressure when the user inhales is 102642Pa, and the maximum pressure during exhalation is 102810Pa. The maximum pressure difference in this state is 168Pa.

[0097] Therefore, the first threshold and the second threshold can be determined according to the pressure difference under the above different states and the working requirements of the mesh atomizer:

[0098] Since the maximum pressure difference in the weak breathing process is at least 16Pa, if it is possible to accurately distinguish whether the user is in the exhalation state or the inhalation state when the weak breathing state is detected, it is necessary to effectively distinguish whether the user's actual breathing state is in the initial exhalation state or the inhalation state when the user is in the normal breathing state or the deep breathing state. Therefore, the above first threshold and the second threshold must be less than 16 / 2=8Pa to distinguish the breathing process.

[0099] The mesh nebulizer provided by the present invention can effectively ensure that the mesh nebulizer accurately identifies the user's exhalation state or inhalation state by statistically analyzing the respiratory pressure curves of different people under different breathing states, so that the first threshold value and the second threshold value are scientifically determined, and the breathing state determination result is consistent with the user's actual breathing action, so that the nebulizer can perform an accurate spray action, thereby enhancing the user's usage experience.

[0100] Based on the contents of the above embodiments, as an optional embodiment, in the process of determining the first threshold and the second threshold, it also includes: determining the height difference of the measured group of people to determine the air pressure change value based on the height difference; and determining the first threshold and the second threshold in combination with the air pressure change value.

[0101] Due to the height difference between different users, and the same mesh atomizer may be used in different areas, such as when used on the first floor and on a higher floor, there will be a difference in altitude, which will lead to different atmospheric pressures, that is, the standard reference air pressure value will change. Generally speaking, a 0.5-meter height difference corresponds to a pressure change of about 6Pa.

[0102] In view of this, in order to make the mesh atomizer provided by the present invention have better sensitivity to adapt to height difference recognition, the adjustment can be achieved by appropriately adjusting the first threshold and the second threshold. Combined with the first threshold and the second threshold determined in the above embodiment to be less than 8Pa, it can be further determined that the first threshold and the second threshold should not be greater than 6Pa.

[0103] In summary, the values ​​of the first threshold and the second threshold may be between 6Pa and 8Pa, or may be set to other values ​​in combination with the performance of the atomizer and the acquisition accuracy of the pressure sensor.

[0104] Based on the contents of the above embodiments, Figure 1As shown, as an optional embodiment, the mesh nebulizer provided by the present invention further includes: an operating state switching switch 8; the operating state switching switch 8 is mainly used to switch the working mode of the mesh nebulizer; the working modes include a continuous atomization state and a breathing synchronized atomization mode; in the continuous atomization state mode, the main control board controls the piezoelectric mesh atomization sheet to be continuously turned on; in the breathing synchronized atomization mode, the main control board controls the working state of the piezoelectric mesh atomization sheet according to the air pressure value.

[0105] The mesh atomizer provided by the present invention can switch the operation mode through the operation state switching switch 8 according to the actual use needs of the user.

[0106] Specifically, when the operation state switching switch 8 is in the non-operation state, the mesh atomizer's operation mode is set to the continuous atomization state by default. At this time, after the mesh atomizer provided by the present invention is turned on by the start switch, its piezoelectric mesh atomization sheet 2 is always in the energized operation state, and is not associated with the user's breathing state, until the start switch is turned off, and the atomization can be stopped.

[0107] When the state switching switch 8 is in the action state, the working mode of the mesh nebulizer is set to the breathing synchronized nebulization mode by default. Then, according to the working method described in the above embodiment, the current real-time air pressure value at the spray port 1 is collected and compared with the predetermined standard reference air pressure value to determine the current breathing state of the user, so as to ensure that the nebulizer nebulizes when the user inhales and stops nebulizing when the user exhales.

[0108] The mesh atomizer provided by the present invention can meet the use requirements of different users and is more intelligent by providing a state switching switch to provide an interface for the user to independently select an atomization working mode.

[0109] Based on the contents of the above embodiments, Figure 1 As shown, as an optional embodiment, the mesh atomizer provided by the present invention further includes: a DC power supply module 9, which is used to power the mesh atomizer; the DC power supply module 9 supports external AC power or battery power supply.

[0110] The mesh atomizer provided by the present invention provides a variety of power supply modes, which can meet the needs of different usage scenarios.

[0111] Based on the contents of the above embodiments, Figure 1 As shown, as an optional embodiment, the sampling probe of the pressure sensor is connected to the spray port 1 through a hose 10 .

[0112] Specifically, the spray head of the mesh atomizer provided by the present invention is connected to its protective shell in a detachable manner. The spray head mainly includes a spray port 1, a piezoelectric mesh atomizer 2, an atomizer cup 3 and other parts, which are the execution part for realizing drug atomization; the protective shell is provided with a main control board 7 and a pressure sensor 4 and other monitoring data acquisition units and data storage, calculation and processing units, which are mainly used to control the atomization state.

[0113] Among them, a reserved air path 11 is set at the spray outlet. After the execution part is connected to the protective shell (such as by snap connection or guide rail connection), one end of the hose 10 is connected to the pressure sensor 4, and the other end of the conduit is connected to the reserved air path 11, so that the user can collect the air pressure out of the spray outlet 1 in real time.

[0114] The mesh atomizer provided by the present invention has a reserved air path 11 designed at the spray outlet, so that the entire spray execution part can be detachably connected to the protective shell, which is convenient for cleaning and equipment maintenance.

[0115] The present invention also provides a control method for a mesh nebulizer, comprising: driving a pressure sensor to collect an air pressure value at a spray port at a preset time interval; receiving and storing the air pressure value uploaded by the pressure sensor; determining a standard reference air pressure value based on the air pressure value stored in a pressure value storage module; the standard reference air pressure value is the air pressure value when the user is in a non-breathing state; generating a start-stop control instruction based on a comparison relationship between a current real-time air pressure value collected by the pressure sensor and the standard reference air pressure value; and executing the start-stop control instruction to control the working state of the piezoelectric mesh nebulizer.

[0116] The control method of the mesh nebulizer provided by the present invention utilizes a pressure sensor to collect the air pressure value at the spray port, thereby determining the real-time breathing state of the patient, without the influence of unreliable factors caused by indirect monitoring of other non-respiratory parameters, so as to realize the functions of atomizing and maintaining during inhalation and stopping atomizing during exhalation, thereby improving the patient's comfort during atomization, reducing the waste of liquid medicine, and reducing the pollution of the medicine to the environment, and has reliable performance and low cost.

[0117] It should be noted that the mesh atomizer control method provided in the embodiment of the present invention can be implemented based on the mesh atomizer described in any of the above embodiments during specific execution, which will not be elaborated in this embodiment.

[0118] Figure 7 is a schematic diagram of the structure of the electronic device provided by the present invention, such as Figure 7As shown, the electronic device may include: a processor 710, a communication interface 720, a memory 730 and a communication bus 740, wherein the processor 710, the communication interface 720 and the memory 730 communicate with each other through the communication bus 740. The processor 710 may call the logic instructions in the memory 730 to execute the mesh nebulizer, which includes: driving the pressure sensor to collect the air pressure value at the spray port at a preset time interval; receiving and storing the air pressure value uploaded by the pressure sensor; determining the standard reference air pressure value according to the air pressure value stored in the pressure value storage module; the standard reference air pressure value is the air pressure value when the user is in a non-breathing state; generating a start-stop control instruction according to the comparison relationship between the current real-time air pressure value collected by the pressure sensor and the standard reference air pressure value; executing the start-stop control instruction to control the working state of the piezoelectric mesh atomizer.

[0119] In addition, the logic instructions in the above-mentioned memory 730 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0120] On the other hand, the present invention also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the above-mentioned mesh nebulizers provided, which include: driving a pressure sensor at a preset time interval to collect the air pressure value at the spray outlet; receiving and storing the air pressure value uploaded by the pressure sensor; determining a standard reference air pressure value according to the air pressure value stored in the pressure value storage module; the standard reference air pressure value is the air pressure value when the user is in a non-breathing state; generating a start-stop control instruction based on the comparison relationship between the current real-time air pressure value collected by the pressure sensor and the standard reference air pressure value; executing the start-stop control instruction to control the working state of the piezoelectric mesh nebulizer.

[0121] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the mesh nebulizer provided by the above-mentioned embodiments, including: driving a pressure sensor to collect the air pressure value at the spray outlet at a preset time interval; receiving and storing the air pressure value uploaded by the pressure sensor; determining a standard reference air pressure value according to the air pressure value stored in a pressure value storage module; the standard reference air pressure value is the air pressure value when the user is in a non-breathing state; generating a start-stop control instruction according to the comparison relationship between the current real-time air pressure value collected by the pressure sensor and the standard reference air pressure value; executing the start-stop control instruction to control the working state of the piezoelectric mesh nebulizer.

[0122] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0123] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute each embodiment or some parts of the embodiments.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mesh atomizer, characterized in that: include: Spray nozzle, piezoelectric mesh atomizer, atomizer cup, pressure sensor, and main control board located inside the protective housing; The pressure sensor is used to collect the air pressure value at the spray nozzle and send the air pressure value to the main control board; The main control board is used to control the working state of the piezoelectric mesh atomizer according to the air pressure value, so as to determine the atomization state of the liquid medicine in the atomizer cup flowing toward the spray port; The main control board includes a standard air pressure value determination module and a real-time air pressure value comparison module; The standard air pressure value determination module is used to determine a standard reference air pressure value according to the air pressure value stored in the pressure value storage module; the standard reference air pressure value is the air pressure value when the user is in a non-breathing state; The real-time air pressure value comparison module is used to generate a start-stop control instruction according to a comparison relationship between the current real-time air pressure value collected by the pressure sensor and the standard reference air pressure value; After the power-on initialization and before the mesh atomizer is put into use, the standard air pressure value determination module is used to determine the standard reference air pressure value according to the air pressure value stored in the pressure value storage module, specifically including: Step 1: collecting N consecutive air pressure values ​​uploaded by the pressure sensor at preset time intervals, and determining the maximum air pressure value and the minimum air pressure value among the N air pressure values; Step 2: When the difference between the maximum air pressure value and the minimum air pressure value among the N air pressure values ​​is less than a first threshold value, storing the N air pressure values ​​in the pressure value storage module; Step 3: Determine the standard reference air pressure value according to the N air pressure values; The standard air pressure value determination module, when the standard reference air pressure value has been determined, iteratively executes step 1 to step 2 before the mesh atomizer is put into use each time, until the number of air pressure values ​​stored in the pressure value storage module is M, M>N; Sort the M air pressure values ​​from small to large, and calculate the maximum air pressure and the minimum air pressure among the M air pressure values; When the difference between the maximum air pressure value and the minimum air pressure value among the M air pressure values ​​is less than a second threshold, re-determining the standard reference air pressure value according to the M air pressure values; The real-time air pressure value comparison module is used to generate a start-stop control instruction according to the comparison relationship between the current real-time air pressure value collected by the pressure sensor and the standard reference air pressure value, specifically including: When it is confirmed that the current real-time air pressure value is less than the difference between the standard reference air pressure value and the second threshold value, the start-stop control instruction is an atomization start instruction; When it is confirmed that the current real-time air pressure value is greater than the sum of the standard reference air pressure value and the second threshold value, the start-stop control instruction is an atomization shut-down instruction; When it is confirmed that the current real-time air pressure value is not less than the difference between the standard reference air pressure value and the second threshold value or the current real-time air pressure value is not greater than the sum of the standard reference air pressure value and the second threshold value, the start-stop control instruction is empty; The first threshold and the second threshold are determined based on a respiratory pressure curve in a weak respiratory state.

2. The mesh atomizer according to claim 1, characterized in that: The main control board also includes: a pressure value acquisition module, a pressure value storage module and an atomization drive control module; When the mesh atomizer is in working mode, the pressure value acquisition module is used to drive the pressure sensor to acquire the air pressure value at the spray port at a preset time interval; The pressure value storage module is used to receive and store the air pressure value uploaded by the pressure sensor; The atomization drive control module is used to execute the start-stop control instruction to control the working state of the piezoelectric mesh atomization sheet.

3. The mesh atomizer according to claim 2, characterized in that: The first threshold and the second threshold are determined based on the respiratory pressure curve under different respiratory states; the first threshold and the second threshold are both less than half of the difference between the maximum air pressure and the minimum air pressure determined by the respiratory pressure curve under a weak respiratory state.

4. The mesh atomizer according to claim 3, characterized in that: The process of determining the first threshold and the second threshold further includes: Determine the height difference of the measured group of people, and determine the air pressure change value according to the height difference; The first threshold and the second threshold are determined in combination with the air pressure change value.

5. The mesh atomizer according to claim 1, characterized in that: Also includes: Operation status switch; The operating state switching switch is used to switch the working mode of the mesh atomizer; The working modes include a continuous atomization state and a breathing synchronized atomization mode; In the continuous atomization state mode, the main control board controls the piezoelectric mesh atomization sheet to be continuously turned on; In the breathing synchronized atomization mode, the main control board controls the working state of the piezoelectric mesh atomization sheet according to the air pressure value.

6. The mesh atomizer according to claim 1, characterized in that: Also includes: A direct current power supply module, used to supply power to the mesh atomizer; The DC power supply module supports external mains power or battery power supply.

7. The mesh atomizer according to claim 1, characterized in that: The sampling probe of the pressure sensor is connected to the spray port through a hose.

Images