CN116088380A

CN116088380A - Atomization control circuit for synchronizing breathing rhythm

Info

Publication number: CN116088380A
Application number: CN202310070534.0A
Authority: CN
Inventors: 柴可; 杜垚; 齐瑛
Original assignee: Guangxi Bulu Medical Equipment Co ltd
Current assignee: Guangxi Bulu Medical Equipment Co ltd
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-05-09

Abstract

The application provides an atomization control circuit for synchronizing breathing rhythm, which relates to the field of signal control, wherein the circuit comprises a sampling module, a main control module, an atomization module and a power supply; the sampling module is connected with the main control module, the main control module is connected with the atomizing module, the power supply is connected with the sampling module, the main control module and the atomizing module respectively and is used for supplying power to the sampling module, the main control module and the atomizing module respectively, and the atomizing module is further connected with an atomizing sheet. The sampling module generates sampling signals and outputs the sampling signals to the main control module when detecting the inhalation action of a patient, the main control module generates control signals after receiving the sampling signals, the atomizing module is controlled to convert the power supply voltage into high-frequency driving voltage to drive the atomizing sheet to work, the mist feeding strategy is adjusted according to the real-time breathing rhythm of the patient, mist is fed to the patient when the patient inhales, the mist feeding is stopped to the patient when the patient does not inhale, the patient can be effectively prevented from choking the throat, and accordingly patient experience is improved.

Description

Atomization control circuit for synchronizing breathing rhythm

Technical Field

The application relates to the field of medical equipment, in particular to an atomization control circuit for synchronizing breathing rhythm.

Background

The medical atomizer is a medical instrument for treating upper respiratory tract diseases, and the principle is that the voltage provided by a power supply is boosted and then subjected to resonance treatment, so that a driving voltage with higher frequency is generated to drive an atomizing sheet to work, and a patient enters respiratory tract and lung deposition in a respiratory inhalation mode through atomizing liquid medicine into tiny particles, so that the treatment purpose is achieved.

The existing atomizer has the advantages that the atomizing mode is active mist feeding, namely, the liquid medicine is continuously atomized for patients to inhale, and in actual application, the problem that the patients choke the throat can occur due to the fact that the atomizing sheet continuously works to mist, so that the experience of the patients is poor.

Disclosure of Invention

The utility model provides a synchronous breathing rhythm's atomization control circuit send fog for the patient according to the action of breathing in of patient, stops sending fog for the patient when not detecting the action of breathing in of patient, can solve the atomizing piece and last work and make the patient appear choking the problem of throat, improves patient experience.

The application provides an atomization control circuit for synchronizing breathing rhythm, which comprises a sampling module, a main control module, an atomization module and a power supply; the sampling module is connected with the main control module, the main control module is connected with the atomization module, the power supply is respectively connected with the sampling module, the main control module and the atomization module and is used for respectively supplying power to the sampling module, the main control module and the atomization module, and the atomization module is also connected with an atomization sheet;

the sampling module is used for generating a sampling signal and outputting the sampling signal to the main control module, wherein the sampling signal is generated when the sampling module detects the inhalation action of a patient;

the main control module is used for generating a control signal after receiving the sampling signal and outputting the control signal to the atomization module;

the atomization module is used for boosting the power supply voltage based on the control signal, carrying out resonance treatment on the boosted voltage, and outputting driving voltage which is used for driving the atomization sheet to work.

Through adopting above-mentioned technical scheme, sampling module generates sampling signal and exports sampling signal to main control module when detecting patient's action of breathing in, and main control module generates control signal after receiving sampling signal, and control atomizing module converts power supply voltage into high-frequency driving voltage to drive atomizing piece work, send fog strategy according to patient's real-time breathing rhythm adjustment, send fog for the patient when patient inhales, send fog to the patient when patient does not inhale, can effectively prevent that the patient from appearing choking the throat problem to promote patient experience.

Optionally, the atomization module comprises an atomization power supply control unit, a boosting unit and a resonance driving unit; the atomization power supply control unit is respectively connected with the main control module, the boosting unit and the power supply, and the resonance driving unit is respectively connected with the boosting unit and the main control module; the control signals comprise first control signals and second control signals;

the atomization power supply control unit is used for conducting the power supply voltage to the boosting unit after receiving the first control signal;

the boosting unit is used for boosting the power supply voltage to obtain an output voltage;

the resonance driving unit is used for carrying out resonance processing on the output voltage based on the second control signal and outputting the driving voltage.

Through adopting above-mentioned technical scheme, main control module's first control signal is direct current enable signal, can control whole atomizing module's direct current voltage input, and the second control signal is PWM control signal for control resonance frequency of resonance unit, thereby control output voltage's frequency, consequently holistic atomizing module can boost power supply voltage according to main control module's first control signal and second control signal, and carry out resonance to the output voltage after the boost, obtain driving voltage in order to drive atomizing piece work.

Optionally, the atomizing power supply control unit includes a first MOS tube and a first resistor;

the grid electrode of the first MOS tube is connected with the main control module, the source electrode of the first MOS tube is connected with the power supply, and the drain electrode of the first MOS tube is connected with the boosting unit;

the first end of the first resistor is connected with the grid electrode of the first MOS tube, and the second end of the first resistor is connected with the source electrode of the first MOS tube.

By adopting the technical scheme, after the grid electrode of the first MOS tube receives the first control signal of the main control mode, the source electrode and the drain electrode are conducted, and then the power supply voltage can be connected to the boosting unit.

Optionally, the boost unit includes a first capacitor, a second capacitor, a first inductor, a first diode, a third capacitor, a fourth capacitor, a dc boost chip, a second resistor, and a third resistor;

the first end of the first capacitor is connected with the atomization power supply control unit, and the second end of the first capacitor is grounded;

the first end of the second capacitor is connected with the atomization power supply control unit, and the second end of the second capacitor is grounded;

the first end of the first inductor is connected with the atomizing power supply control unit, and the second end of the second inductor is connected with the switch pin of the direct-current boost chip;

the positive electrode of the first diode is connected with the second end of the first inductor, and the negative electrode of the first diode is connected with the resonance driving unit;

the first end of the third capacitor is connected with the negative electrode of the first diode, and the second end of the third capacitor is grounded;

the first end of the fourth capacitor is connected with the negative electrode of the first diode, and the second end of the fourth capacitor is grounded;

the first end of the third resistor is connected with the negative electrode of the first diode, and the second end of the third resistor is connected with the feedback pin of the direct current boost chip;

the first end of the fourth resistor is connected with the second end of the third resistor, and the second end of the fourth resistor is grounded;

the enabling pin of the direct current booster chip is connected with the cathode of the first diode, the power supply pin of the direct current booster chip is connected with the cathode of the first diode, and the grounding pin of the direct current booster chip is grounded.

By adopting the technical scheme, the power supply voltage of the input boosting unit is filtered by the first capacitor and the second capacitor. The BOOST circuit is formed by the direct-current BOOST chip, the first inductor, the first diode, the third capacitor and the fourth capacitor, and the BOOST of the power supply voltage is realized through the control of the direct-current BOOST chip.

Optionally, the resonant driving unit includes a three-pin inductor, a fifth capacitor, a second MOS transistor, a fifth resistor, a sixth resistor, and a seventh resistor;

the first end of the three-pin inductor is connected with the boosting unit, the second end of the three-pin inductor is connected with the first end of the fifth capacitor, and the third end of the three-pin inductor is connected with the second end of the fifth capacitor;

the drain electrode of the second MOS tube is connected with the second end of the three-pin inductor, the grid electrode of the second MOS tube is connected with the first end of the fifth resistor, the second end of the fifth resistor is connected with the main control module, the source electrode of the second MOS tube is connected with the first end of the sixth resistor, and the second end of the sixth resistor is grounded;

the first end of the seventh resistor is connected with the source electrode of the second MOS tube, and the second end of the seventh resistor is connected with the main control module.

Through adopting above-mentioned technical scheme, the second control signal control second MOS pipe of main control module switches on and cuts off, and second inductance and fifth electric capacity form the LC resonant circuit simultaneously under the control of second MOS pipe to output the higher driving voltage of frequency in order to drive atomizing piece work.

Optionally, the atomization module further includes a dc isolation unit, where the dc isolation unit includes a sixth capacitor and a seventh capacitor;

the first end of the sixth capacitor is connected with the first end of the fifth capacitor, and the second end of the sixth capacitor is connected with the first interface of the atomizing sheet;

the first end of the seventh capacitor is connected with the second end of the fifth capacitor, and the second end of the sixth capacitor is connected with the second interface of the atomizing sheet.

By adopting the technical scheme, the DC component in the driving voltage is filtered by using the isolation unit, so that the stability of the driving voltage is ensured.

Optionally, the circuit further comprises a voltage stabilizing module, and the voltage stabilizing module is respectively connected with the power supply and the sampling module;

the voltage stabilizing module is used for providing stable direct-current voltage for the sampling module.

By adopting the technical scheme, the power supply voltage is stabilized, so that the sampling module has stable power supply voltage, and the interference of unstable power supply voltage to the sampling module is avoided.

Optionally, the voltage stabilizing module includes a linear low dropout voltage regulator, an eighth capacitor, a ninth capacitor and a tenth capacitor;

the input port of the linear low-dropout voltage regulator is connected with the power supply, the output port of the linear low-dropout voltage regulator is connected with the sampling module, and the grounding port of the linear low-dropout voltage regulator is grounded;

the first end of the eighth capacitor is connected with the power supply, and the second end of the eighth capacitor is grounded;

a first end of the ninth capacitor is connected with the power supply, and a second end of the ninth capacitor is grounded;

the first end of the tenth capacitor is connected with the power supply, and the second end of the tenth capacitor is grounded.

Optionally, the circuit further comprises a key switching module; the key switching module is connected with the main control module;

by adopting the technical scheme, the linear low dropout voltage regulator is used for stabilizing the power supply voltage, and meanwhile, the voltage input into the linear low dropout voltage regulator and the voltage output from the linear low dropout voltage regulator are filtered, so that the voltage stabilizing function is realized.

The key switching module is used for controlling the main control module to switch between a first mode and a second mode, wherein the first mode is a mode that the main control module continuously outputs the control signal to the atomization module, and the second mode is a mode that the main control module outputs the control signal to the atomization module when receiving the sampling signal.

Through sampling above-mentioned technical scheme, can be according to patient's hobby through button switching module switching send fog mode, improve patient's use experience.

Optionally, the key switching module is a key switch;

the first end of the key switch is connected with the main control module, and the second end of the key switch is grounded.

Through adopting above-mentioned technical scheme, use key switch can realize sending the switching of fog mode, can reduce the patient and operate the degree of difficulty.

In summary, the beneficial effects brought by the technical scheme of the application include:

the sampling module generates sampling signals and outputs the sampling signals to the main control module when detecting the inhalation action of a patient, the main control module generates control signals after receiving the sampling signals, the atomizing module is controlled to convert the power supply voltage into high-frequency driving voltage to drive the atomizing sheet to work, the mist feeding strategy is adjusted according to the real-time breathing rhythm of the patient, mist is fed to the patient when the patient inhales, the mist feeding is stopped to the patient when the patient does not inhale, the patient can be effectively prevented from choking the throat, and accordingly patient experience is improved.

Drawings

Fig. 1 is a schematic structural diagram of an atomization control circuit for synchronizing breathing rhythm according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of another atomization control circuit for synchronizing breathing rhythm according to an embodiment of the present application;

fig. 3 is a topology circuit diagram of an atomization control circuit for synchronizing breathing rhythm according to an embodiment of the present application;

fig. 4 is a topology circuit diagram of an atomizing power supply control unit 301 according to an embodiment of the present application;

fig. 5 is a topology circuit diagram of a boost unit 302 according to an embodiment of the present application;

fig. 6 is a topology circuit diagram of a resonant drive unit 303 provided in an embodiment of the present application;

fig. 7 is a topology circuit diagram of a voltage stabilizing module 40 according to an embodiment of the present application.

Reference numerals illustrate: 10. a sampling module; 20. a main control module; 30. an atomization module; 301. an atomization power supply control unit; 302. a boosting unit; 303. a resonance driving unit; 304. a DC isolation unit; 40. a voltage stabilizing module; 50. and the key switching module.

Detailed Description

In order to make the technical solutions in the present specification better understood by those skilled in the art, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments.

In the description of embodiments of the present application, words such as "exemplary," "such as" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "illustrative," "such as" or "for example" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "illustratively," "such as" or "for example," etc., is intended to present related concepts in a concrete fashion.

In the description of the embodiments of the present application, the term "plurality" means two or more. For example, a plurality of systems means two or more systems, and a plurality of screen terminals means two or more screen terminals. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating an indicated technical feature. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an atomization control circuit for synchronous breathing rhythm according to an embodiment of the present application, where the atomization control circuit for synchronous breathing rhythm includes a sampling module 10, a main control module 20, an atomization module 30, and a power supply; the sampling module 10 is connected with the main control module 20, the main control module 20 is connected with the atomizing module 30, and the power is respectively connected with the sampling module 10, the main control module 20 and the atomizing module 30 for respectively supplying power to the sampling module 10, the main control module 20 and the atomizing module 30, and the atomizing module 30 is also connected with an atomizing sheet.

The sampling module 10 is configured to generate a sampling signal, and output the sampling signal to the main control module 20, where the sampling signal is generated by the sampling module 10 when detecting the inhalation of the patient;

the main control module 20 is configured to generate a control signal after receiving the sampling signal, and output the control signal to the atomization module 30;

the atomizing module 30 is configured to boost the power supply voltage based on the control signal, resonate the boosted voltage, and output a driving voltage for driving the atomizing sheet to work.

The sampling module 10 may be an airflow sensor, a pressure sensor or a motion sensor, for example, a valve-like structure is disposed in the nebulized airway, and the valve is actuated upon inhalation such that the pressure sensor or motion sensor detects the patient's inhalation. Wherein the sampling signal generated by the sampling module 10 may be a high level signal.

The main control module 20 may be an MCU, and is loaded with logic or a program for implementing the embodiments of the present application, where the control signal may be an enable signal or a PWM control signal.

The atomizing module 30 may be a plurality of units integrated on the same device or the same PCB board, or may be a plurality of units arranged on different devices or different PCB boards, so as to convert the power supply voltage into the driving voltage based on the control signal. Wherein the driving voltage may be a high frequency oscillating voltage.

The sampling module 10 generates a sampling signal when detecting the inhalation of a patient, the duration of the sampling signal is that the sampling signal stops when not detecting the inhalation of the patient, the sampling signal is output to the main control module 20, the main control module 20 outputs a control signal to control the atomization module 30 to work after receiving the sampling signal, the working time of the atomization module 30 is the duration of the sampling signal, the atomization module 30 works to boost the power voltage, the boosted voltage is subjected to resonance treatment, and the driving voltage capable of driving the atomization sheet to work is output. That is, the purpose of delivering the mist when the patient inhales and stopping delivering the mist when the patient does not inhale is achieved.

Fig. 2 is a schematic structural diagram of another atomization control circuit for synchronizing breathing rhythm according to an embodiment of the present application. Wherein the atomizing module 30 in the atomizing control circuit comprises an atomizing power supply control unit 301, a boosting unit 302 and a resonance driving unit 303; the atomization power supply control unit 301 is respectively connected with the main control module 20, the boosting unit 302 and the power supply, and the resonance driving unit 303 is respectively connected with the boosting unit 302 and the main control module 20; the control signals comprise first control signals and second control signals; an atomization power supply control unit 301, configured to receive a first control signal and then conduct a power supply voltage to a boost unit 302; the boosting unit 32 is used for boosting the power supply voltage to obtain an output voltage; the resonance driving unit 303 is configured to perform resonance processing on the output voltage based on the second control signal, and output a driving voltage.

In the embodiment of the present application, please refer to fig. 3, which is a topology circuit diagram of an atomization control circuit for synchronizing breathing rhythm provided in the embodiment of the present application. The sampling module 10, the main control module 20 and the atomizing module 30 are respectively powered by the same power supply voltage, the power supply voltage is a direct current voltage with a lower voltage class, and the power supply voltage is required to be converted into a driving voltage capable of driving the atomizing sheet to work under the condition that other voltage inputs are not introduced, and the driving voltage is a voltage with a higher oscillation frequency.

In this embodiment, when the voltage input to the atomizing module 30 is the voltage of other voltage classes, the atomizing module 30 should be adjusted accordingly to output the driving voltage according to the operation of the atomizing sheet after receiving the control signal.

The atomizing power supply control unit 301 may be a MOS transistor, or a relay controlled by a first control signal or hardware having a relay switch structure, and the atomizing control unit 31 is disposed between the power supply and the boost unit 302, and is configured to conduct the power supply voltage to the boost unit 302 after receiving the first control signal, where the first control signal may be a signal pulse, or an enable signal capable of controlling the relay or hardware having a relay switch structure.

Referring to fig. 4, a topology circuit diagram of an atomizing power control unit 301 according to an embodiment of the present application is provided.

In one embodiment, the atomizing power control unit 301 includes a first MOS transistor Q1 and a first resistor R1; the grid electrode of the first MOS tube Q1 is connected with the main control module 20, the source electrode of the first MOS tube Q1 is connected with a power supply, and the drain electrode of the first MOS tube Q1 is connected with the boosting unit 302; the first end of the first resistor R1 is connected with the grid electrode of the first MOS tube Q1, and the second end of the first resistor R1 is connected with the source electrode of the first MOS tube Q1.

The first MOS transistor Q1 is an N-channel enhancement type MOS transistor, for example, after the gate receives a first control signal output by the main control module 20, the first MOS transistor Q1 is turned on, the power supply voltage goes from the source to the drain of the first MOS transistor Q1, then goes to the boost unit 302, and after being boosted, goes through resonance processing to obtain a driving voltage, so that the atomizing sheet works, and mist is sent to the patient when the patient inhaling action is detected. When the grid electrode of the first MOS tube Q1 does not receive the direct current enabling signal output by the main control module 20, the first MOS tube Q1 is cut off, the whole atomization module has no power supply voltage input, and therefore driving voltages are not arranged at two ends of the atomization sheet, and mist feeding for a patient is stopped when the inhalation action of the patient is not detected. It will be appreciated that the undetected patient's inspiratory activity comprises the patient's expiratory activity or the use of the nebulizer is stopped and no respiratory activity is performed.

The first resistor R1 is connected between the gate and the source of the first MOS transistor Q1, and the first resistor R1 can be used for preventing the power voltage output to the boost unit 302 from oscillating due to parasitic capacitance between the gate and the source of the first MOS transistor Q1.

Referring to fig. 5, a topology circuit diagram of a boost unit 302 according to an embodiment of the present application is provided.

In one embodiment, the boost unit 302 includes a first capacitor C1, a second capacitor C2, a first inductor L1, a first diode D1, a third capacitor C3, a fourth capacitor C4, a dc boost chip, a second resistor R2, and a third resistor R3; a first end of the first capacitor C1 is connected with the atomization power supply control unit 301, and a second end of the first capacitor C1 is grounded; the first end of the second capacitor C2 is connected with the atomization power supply control unit 301, and the second end of the second capacitor C2 is grounded; the first end of the first inductor L1 is connected with the atomizing power supply control unit 301, and the second end of the second inductor is connected with a switch pin of the direct-current boost chip; the positive electrode of the first diode D1 is connected with the second end of the first inductor L1, and the negative electrode of the first diode D1 is connected with the resonance driving unit 303; the first end of the third capacitor C3 is connected with the cathode of the first diode D1, and the second end of the third capacitor C3 is grounded; the first end of the fourth capacitor C4 is connected with the cathode of the first diode D1, and the second end of the fourth capacitor C4 is grounded; the first end of the third resistor R3 is connected with the cathode of the first diode D1, and the second end of the third resistor R3 is connected with the feedback pin of the direct current boost chip; the first end of the fourth resistor R4 is connected with the second end of the third resistor R3, and the second end of the fourth resistor R4 is grounded; the enabling pin of the direct current boosting chip is connected with the negative electrode of the first diode D1, the power supply pin of the direct current boosting chip is connected with the negative electrode of the first diode D1, and the grounding pin of the direct current boosting chip is grounded.

The boosting unit 302 may be divided into three parts according to the difference of the actions, and the three parts are as follows:

the first part is: the first capacitor C1 and the second capacitor C2 play a role in filtering in a circuit, and filter the power supply voltage input by the atomizing power supply control unit 301, and the on-off of the first MOS transistor Q1 also generates a high frequency component, and filter the power supply voltage to obtain a stable dc voltage.

The second part is: the structure similar to a BOOST circuit is formed by the first inductor L1, the first diode D1, the third capacitor C3, the fourth capacitor C4 and the direct current BOOST chip, wherein a driving circuit is arranged in the direct current BOOST chip, the first inductor L1 is an energy storage element, and the boosting principle is as follows: when the second end of the first inductor L1 is grounded through the switch pin of the direct current boost chip, the power supply voltage charges the first inductor L1, and when the second end of the first inductor L1 is not grounded through the switch pin of the direct current boost chip, the energy stored by the first inductor L1 discharges to the rear end through the first diode D1, and the voltage stored by the inductor is superposed with the power supply voltage to realize boost. The drive circuit arranged in the direct current BOOST chip can enable the first inductor L1 to be grounded when the negative electrode of the first diode D1 outputs voltage, the power supply pin and the enabling pin of the direct current BOOST chip are grounded when power is supplied, the first inductor L1 is grounded, the enabling pin is powered off after the first inductor L1 is grounded, and the switching pin is not grounded, so that a BOOST effect is achieved by using the BOOST circuit.

In one implementation, the first diode D1 may be a schottky diode with low forward turn-on voltage and short reaction time.

The third part is: the second resistor R2, the third resistor R3 and the direct current boost chip form a feedback circuit, the final output voltage is divided by the second resistor R2 and the third resistor R3 to obtain the feedback voltage input to the feedback pin of the direct current boost chip, and the control frequency of the direct current boost chip is regulated according to the feedback voltage, so that the output voltage meets the requirement and is kept stable.

Referring to fig. 6, a topology circuit diagram of a resonant driving unit 303 according to an embodiment of the present application is provided.

In one embodiment, the resonant driving unit 303 includes a three-pin inductor, a fifth capacitor C5, a second MOS transistor Q2, a fifth resistor R5, a sixth resistor R6, and a seventh resistor R7; the first end of the three-pin inductor is connected with the boosting unit 302, the second end of the three-pin inductor is connected with the first end of the fifth capacitor C5, and the third end of the three-pin inductor is connected with the second end of the fifth capacitor C5; the drain electrode of the second MOS tube Q2 is connected with the second end of the three-pin inductor, the grid electrode of the second MOS tube Q2 is connected with the first end of the fifth resistor R5, the second end of the fifth resistor R5 is connected with the main control module 20, the source electrode of the second MOS tube Q2 is connected with the first end of the sixth resistor R6, and the second end of the sixth resistor R6 is grounded; the first end of the seventh resistor R7 is connected with the source electrode of the second MOS tube Q2, and the second end of the seventh resistor R7 is connected with the main control module 20.

The second control signal of the main control module 20 reaches the gate of the second MOS transistor Q2 through the fourth resistor R4, where the second control signal is a PWM control signal, the PWM control signal controls on and off of the second MOS transistor Q2, and the output voltage forms an LC oscillating circuit with the fifth capacitor C5 through the three-pin inductor, so as to implement resonance under the control of the PWM control signal. Meanwhile, the three-leg inductor converts primary electric energy into magnetic energy, when the magnetic energy is induced to the secondary side, the secondary side converts the magnetic energy into electric energy again, the primary inductance and the secondary inductance of the second inductor are adjusted, and the effect of increasing the driving voltage can be achieved. The source voltage of the second MOS tube Q2 is output to the main control module 20 after being divided by the fifth resistor R5, and the resonance frequency is fed back to the main control module 20, so that the main control module 20 can accurately adjust the resonance frequency by adjusting the second control signal.

Referring to fig. 3, in one embodiment, the atomizing module further includes a dc isolation unit 304, and the dc isolation unit 304 includes a sixth capacitor C6 and a seventh capacitor C7; the first end of the sixth capacitor C6 is connected with the first end of the fifth capacitor C5, and the second end of the sixth capacitor C6 is connected with the first interface of the atomizing sheet; the first end of the seventh capacitor C7 is connected with the second end of the fifth capacitor C5, and the second end of the sixth capacitor C6 is connected with the second interface of the atomizing sheet.

Before the driving voltage is output to the atomizing sheet, a fifth capacitor C5 and a sixth capacitor C6 are connected, the fifth capacitor C5 and the sixth capacitor C6 are isolation capacitors, direct current components in the driving voltage are isolated, and meanwhile protection of the atomizing sheet can be achieved in the opening and closing process of the atomizing module.

Referring to fig. 7, a topology circuit diagram of a voltage stabilizing module 40 according to an embodiment of the present application is provided.

In one embodiment, the circuit further comprises a voltage stabilizing module 40, and the voltage stabilizing module 40 is respectively connected with the power supply and the sampling module 10; the voltage stabilizing module 40 is used for providing a stabilized dc voltage to the sampling module 10. The voltage stabilizing module 40 comprises a linear low dropout voltage regulator, an eighth capacitor C8, a ninth capacitor C9 and a tenth capacitor C10; the input port of the linear low-dropout voltage regulator is connected with a power supply, the output port of the linear low-dropout voltage regulator is connected with the sampling module 10, and the grounding port of the linear low-dropout voltage regulator is grounded; the first end of the eighth capacitor C8 is connected with a power supply, and the second end of the eighth capacitor C8 is grounded; a first end of the ninth capacitor C9 is connected with a power supply, and a second end of the ninth capacitor C9 is grounded; the first end of the tenth capacitor C10 is connected to a power source, and the second end of the tenth capacitor C10 is grounded.

The linear low dropout voltage regulator (Low Dropout regulator) is a dc linear voltage regulator, the voltage after voltage regulation is smaller than the voltage before voltage regulation, for example, the power supply voltage is 4.2V dc voltage, the power supply voltage enters the linear low dropout voltage regulator after being filtered by an eighth capacitor C8 to output 3.3V dc voltage, and the power supply voltage supplies power to the sampling module 10 after being filtered by a ninth capacitor C9 and a tenth capacitor C10, wherein the ninth capacitor C9 is arranged near the linear low dropout voltage regulator, and the tenth capacitor C10 is arranged near the sampling module 10.

In one possible implementation, the circuit further includes a key switch module 50; the key switching module 50 is connected with the main control module 20; the key switching module 50 is configured to control the main control module 20 to switch between a first mode and a second mode, wherein the first mode is a mode in which the main control module 20 continuously outputs a control signal to the atomizing module, and the second mode is a mode in which the main control module 20 outputs the control signal to the atomizing module when receiving the sampling signal. The key switching module 50 is a key switch; the first end of the key switch is connected with the main control module 20, and the second end of the key switch is grounded.

The key switch is controlled to enable the main control module 20 to continuously output a control signal, so that the atomizing module continuously outputs a driving voltage to drive the atomizing sheet to work, and the mist feeding mode of continuously feeding mist and inhaling mist can be switched according to a patient. For example, the current mist delivery mode is an inhalation mist delivery mode of a patient, and the connection between the sampling module 10 and the main control module 20 can be cut off by controlling the key switch S1, so that the control mode of the main control module 20 is not affected by the sampling signal, and meanwhile, the main control module 20 continuously outputs a control signal to enable the atomizing module to drive the atomizing sheet to work, so that the mist delivery mode is switched to the continuous mist delivery mode.

Through the above technical scheme, sampling module 10 generates sampling signal and exports sampling signal to main control module 20 when detecting patient's action of breathing in, and main control module 20 generates control signal after receiving sampling signal, and control atomizing module converts power supply voltage into high-frequency driving voltage to drive atomizing piece work, send fog strategy according to patient's real-time breathing rhythm adjustment, send fog for the patient when patient inhales, send fog to the patient when patient does not inhale, can effectively prevent that the patient from appearing choking the throat problem to promote patient experience.

The above are merely exemplary embodiments of the present disclosure and are not intended to limit the scope of the present disclosure. That is, equivalent changes and modifications are contemplated by the teachings of this disclosure, which fall within the scope of the present disclosure. Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains.

Claims

1. An atomization control circuit for synchronizing breathing rhythm is characterized by comprising a sampling module, a main control module, an atomization module and a power supply; the sampling module is connected with the main control module, the main control module is connected with the atomization module, the power supply is respectively connected with the sampling module, the main control module and the atomization module and is used for respectively supplying power to the sampling module, the main control module and the atomization module, and the atomization module is also connected with an atomization sheet;

2. The circuit of claim 1, wherein the atomizing module comprises an atomizing power control unit, a boost unit, and a resonant drive unit; the atomization power supply control unit is respectively connected with the main control module, the boosting unit and the power supply, and the resonance driving unit is respectively connected with the boosting unit and the main control module; the control signals comprise first control signals and second control signals;

3. The circuit of claim 2, wherein the atomizing power control unit comprises a first MOS transistor and a first resistor;

4. The circuit of claim 2, wherein the boost unit comprises a first capacitor, a second capacitor, a first inductor, a first diode, a third capacitor, a fourth capacitor, a dc boost chip, a second resistor, and a third resistor;

5. The circuit of claim 2, wherein the resonant drive unit comprises a three-pin inductor, a fifth capacitor, a second MOS transistor, a fifth resistor, a sixth resistor, and a seventh resistor;

6. The circuit of claim 5, wherein the atomizing module further comprises a dc isolation unit comprising a sixth capacitance and a seventh capacitance;

7. The circuit of claim 1, further comprising a voltage regulator module connected to the power supply and the sampling module, respectively;

8. The circuit of claim 7, wherein the voltage regulator module comprises a linear low dropout voltage regulator, an eighth capacitor, a ninth capacitor, and a tenth capacitor;

9. The circuit of claim 1, further comprising a key switch module; the key switching module is connected with the main control module;

10. The circuit of claim 9, wherein the key switch module is a key switch;