Nasal aspirator drive circuit, and nasal aspirator

Abstract

Disclosed in the present application are a nasal aspirator drive circuit, and a nasal aspirator. The nasal aspirator drive circuit comprises a current adjustment module, an energy storage battery, a current measurement module and a control module, wherein the current adjustment module is configured to connect to a drive electric motor of a nasal aspirator to form a power supply branch; the energy storage battery is connected to the power supply branch to supply power to the drive electric motor; the current measurement module is connected to the power supply branch to detect a current feedback signal, which is used for indicating the magnitude of a power supply current; and the control module is connected to the current measurement module and the current adjustment module, and the control module adjusts a control signal on the basis of the current feedback signal and outputs the control signal to the current adjustment module, so as to adjust the magnitude of the power supply current. By means of the present design, an operating current for a drive electric motor is stabilized, thus preventing an energy storage battery from being damaged, and improving the durability.

Description

Nasal aspirator driving circuit and nasal aspirator Technical Field

[0001] The present application relates to the technical field of nursing equipment, and in particular to a nasal aspirator driving circuit and a nasal aspirator. Background Art

[0002] There is a nasal aspirator currently available, which is equipped with a fan driven by a drive motor. The fan generates airflow when it runs, and the nasal aspirator penetrates deep into the nostrils to help the user suck out snot and other dirt. However, after the nasal aspirator sucks in the snot, it may cause the drive motor to stall, causing the operating current of the drive motor to increase instantaneously and exceed the rated discharge current of the energy storage battery, which may easily cause damage to the energy storage battery.

[0003] Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a nasal aspirator drive circuit and a nasal aspirator that stabilize the operating current of the drive motor, prevent damage to the energy storage battery, and improve durability.

[0005] According to the first aspect of the present application, a nasal aspirator drive circuit includes: a current regulation module, which is used to be connected to the drive motor of the nasal aspirator to form a power supply branch; an energy storage battery, which is connected to the power supply branch to power the drive motor; a current detection module, which is connected to the power supply branch to detect a current feedback signal, and the current feedback signal is used to characterize the magnitude of the supply current; a control module, which is respectively connected to the current detection module and the current regulation module, and the control module adjusts the magnitude of the supply current according to the current feedback signal and outputs a control signal to the current regulation module.

[0006] A nasal aspirator driving circuit according to an embodiment of the present application has at least the following beneficial effects:

[0007] In the nasal aspirator driving circuit of the present application, the current detection module detects the current feedback signal. During use, when the nasal aspirator sucks in mucus, the power supply current of the driving motor increases instantaneously. The control module controls the current regulation module to adjust the power supply current according to the current feedback signal, so that the power supply current will not be too high and the energy storage battery can supply power normally. This design stabilizes the working current of the driving motor, prevents damage to the energy storage battery, and improves durability.

[0008] According to some embodiments of the present application, the current regulation module includes a switch tube Q1, the energy storage battery is connected to the positive pole of the drive motor, the input end of the switch tube Q1 is connected to the negative pole of the drive motor, the output end of the switch tube Q1 is grounded, and the control module is connected to the controlled end of the switch tube Q1 to output a control signal to control the on and off of the switch tube Q1.

[0009] According to some embodiments of the present application, the current detection module includes a sampling resistor and a voltage divider resistor, the output end of the switch tube Q1 is connected to one end of the sampling resistor and one end of the voltage divider resistor, respectively, the other end of the sampling resistor is grounded, and the other end of the voltage divider resistor is connected to the control module.

[0010] According to some embodiments of the present application, the control module controls the current regulation module to regulate the supply current according to the current feedback signal so that the supply current is less than the rated discharge current of the energy storage battery.

[0011] According to some embodiments of the present application, the nasal aspirator drive circuit also includes a charging module, the input end of the charging module is used to connect to a charging power supply, the charging module is used to adjust the output of the charging power supply, and the output end of the charging module is connected to the energy storage battery.

[0012] According to some embodiments of the present application, the nasal aspirator drive circuit further includes a charging access detection module and a first prompt module, wherein the charging access detection module is connected to the input end of the charging module to detect a charging access feedback signal, and the charging access feedback signal is used to indicate whether the input end of the charging module is connected to a charging power supply, and the control module is respectively connected to the charging access detection module and the first prompt module, and the control module controls the first prompt module to output a first prompt message according to the charging access feedback signal.

[0013] According to some embodiments of the present application, the nasal aspirator drive circuit also includes a power detection module and a second prompt module. The power detection module is connected to the energy storage battery to detect a power feedback signal. The power feedback signal is used to characterize the storage capacity of the energy storage battery. The control module is respectively connected to the power detection module and the second prompt module. The control module controls the second prompt module to output a second prompt message according to the power feedback signal.

[0014] According to some embodiments of the present application, the control signal output by the control module is a PWM duty cycle signal.

[0015] According to some embodiments of the present application, the nasal aspirator driving circuit also includes at least two gear buttons, and applying force to the gear buttons can form a trigger signal. The control module is connected to the gear buttons respectively, and the control module forms a control signal according to different trigger signals to adjust different working currents.

[0016] The nasal aspirator according to the second embodiment of the present application includes the nasal aspirator driving circuit disclosed in any of the above embodiments.

[0017] The nasal aspirator according to the embodiment of the present application has at least the following beneficial effects:

[0018] The nasal aspirator of the present application causes the power supply current of the driving motor to increase instantaneously after the nasal aspirator sucks in mucus. The control module controls the current regulation module to adjust the magnitude of the power supply current according to the current feedback signal, so that the power supply current will not be too high and the energy storage battery can supply power normally. This design stabilizes the working current of the driving motor, prevents damage to the energy storage battery, and improves durability.

[0019] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] FIG1 is a block diagram of the principle structure of one embodiment of the nasal aspirator driving circuit of the present application;

[0022] FIG2 is a circuit diagram of a control module;

[0023] FIG3 is a circuit diagram of a charging module;

[0024] FIG4 is a circuit diagram of a current regulation module.

[0025] Reference numerals: current regulating module 100 ; energy storage battery 200 ; current detecting module 300 ; sampling resistor 310 ; voltage dividing resistor 320 ; control module 400 ; charging module 500 ; charging connection detecting module 610 ; first prompting module 620 ; power detecting module 710 ; second prompting module 720 ; gear button 800 . DETAILED DESCRIPTION

[0026] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0027] In the description of this application, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside", are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply 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 on this application.

[0028] In the description of this application, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0030] As shown in Figures 1-4, a nasal aspirator driving circuit according to the first aspect of the present application includes a current regulating module 100, an energy storage battery 200, a current detection module 300 and a control module 400. The current regulating module 100 is used to be connected to the driving motor of the nasal aspirator to form a power supply branch, the energy storage battery 200 is connected to the power supply branch to power the driving motor, the current detection module 300 is connected to the power supply branch to detect a current feedback signal, and the current feedback signal is used to characterize the magnitude of the supply current. The control module 400 is respectively connected to the current detection module 300 and the current regulating module 100, and the control module 400 adjusts and outputs a control signal to the current regulating module 100 according to the current feedback signal to adjust the magnitude of the supply current.

[0031] Among them, the energy storage battery 200 can be selected from conventional lithium batteries or other batteries. Each energy storage battery 200 has a rated discharge current corresponding to relevant parameters, for example, it can be 9000mAh or other. The control module 400 can be selected from processors such as CPU or MCU and auxiliary circuits.

[0032] In some embodiments of the present application, the control module 400 controls the current regulation module 100 to regulate the supply current according to the current feedback signal so that the supply current is less than the rated discharge current of the energy storage battery 200, thereby protecting the energy storage battery 200.

[0033] In the nasal aspirator driving circuit of the present application, the current detection module 300 detects the current feedback signal. During use, when the nasal aspirator sucks in mucus, the power supply current of the driving motor increases instantaneously. The control module 400 controls the current regulation module 100 to adjust the magnitude of the power supply current according to the current feedback signal, so that the power supply current is not too high and the energy storage battery 200 can supply power normally. This design stabilizes the working current of the driving motor, prevents damage to the energy storage battery 200, and improves durability.

[0034] In some embodiments of the present application, as shown in Figure 4, the current regulation module 100 includes a switch tube Q1, the energy storage battery 200 is connected to the positive pole of the drive motor, the input end of the switch tube Q1 is connected to the negative pole of the drive motor, the output end of the switch tube Q1 is grounded, and the control module 400 is connected to the controlled end of the switch tube Q1 to output a control signal to control the on and off of the switch tube Q1.

[0035] Specifically, the switch tube Q1 can be a transistor, a MOS tube, etc. In some embodiments of the present application, the control signal output by the control module 400 is a PWM duty cycle signal. The control module 400 can adjust the duty cycle of the PWM duty cycle signal and output it to the switch tube Q1 to control the on-off frequency of the switch tube Q1 to adjust different operating currents.

[0036] In some embodiments of the present application, as shown in FIG4 , the current detection module 300 includes a sampling resistor 310 and a voltage divider resistor 320 . The output end of the switch tube Q1 is connected to one end of the sampling resistor 310 and one end of the voltage divider resistor 320 , respectively. The other end of the sampling resistor 310 is grounded, and the other end of the voltage divider resistor 320 is connected to the control module 400 .

[0037] Specifically, the sampling resistor 310 can be a resistor R13, and the voltage divider resistor 320 can be a resistor R10. The working current enters the ground through the sampling resistor 310, and a terminal voltage is formed at one end of the sampling resistor 310. A current feedback signal is formed through the voltage divider resistor 320 and input into the control module 400.

[0038] In some embodiments of the present application, as shown in Figures 1 and 3, the nasal aspirator drive circuit also includes a charging module 500, the input end of the charging module 500 is used to connect to a charging power supply, the charging module 500 is used to adjust the output of the charging power supply, and the output end of the charging module 500 is connected to the energy storage battery 200.

[0039] When the storage capacity of the energy storage battery 200 is insufficient, the user can connect the charging power supply to the input end of the charging module 500 through the charging socket. The charging power supply can be the output port of a power adapter connected to the mains power, and the charging socket can be a conventional USB interface. The charging module 500 adjusts the voltage and current output by the charging power supply to form a voltage and current suitable for charging the energy storage battery 200.

[0040] In some embodiments of the present application, the nasal aspirator drive circuit further includes a charging access detection module 610 and a first prompt module 620. The charging access detection module 610 is connected to the input end of the charging module 500 to detect a charging access feedback signal. The charging access feedback signal is used to indicate whether the input end of the charging module 500 is connected to a charging power supply. The control module 400 is respectively connected to the charging access detection module 610 and the first prompt module 620. The control module 400 controls the first prompt module 620 to output a first prompt message according to the charging access feedback signal.

[0041] Specifically, as shown in Figure 3, the charging access detection module 610 may include a first voltage divider detection unit composed of a resistor R1 and a resistor R4. When the charging power supply is connected, the voltage of the charging access feedback signal fed back by the charging access detection module 610 increases, and the control module 400 can control the drive motor to stop running and switch to the charging state, thereby protecting the energy storage battery 200. The first prompt module 620 can be an LED lamp bead or a buzzer. The control module 400 can control the first prompt module 620 to prompt the charging state or working state of the nasal aspirator through sound, light, etc.

[0042] In some embodiments of the present application, the nasal aspirator drive circuit also includes a power detection module 710 and a second prompt module 720. The power detection module 710 is connected to the energy storage battery 200 to detect a power feedback signal. The power feedback signal is used to characterize the storage capacity of the energy storage battery 200. The control module 400 is respectively connected to the power detection module 710 and the second prompt module 720. The control module 400 controls the second prompt module 720 to output a second prompt message according to the power feedback signal.

[0043] Specifically, as shown in FIG3 , the power detection module 710 may also include a second voltage divider detection unit composed of a resistor R2 and a resistor R5, etc., where the power storage capacity of the energy storage battery 200 can be known through voltage division. The first prompt module 620 may be a plurality of LED lamp beads of different colors, thereby reflecting the amount of power storage capacity by lighting up the lamp beads of different colors.

[0044] In some embodiments of the present application, as shown in Figure 2, the nasal aspirator drive circuit also includes at least two gear buttons 800, and applying force to the gear buttons 800 can generate a trigger signal. The control module 400 is respectively connected to the gear buttons 800, and the control module 400 generates a control signal according to different trigger signals to adjust different working currents.

[0045] The user can selectively apply force to the appropriate gear button 800 by pressing or other actions to select the appropriate gear. The control module then obtains the trigger signal fed back by the corresponding gear button 800, forms a corresponding PWM duty cycle signal according to the gear corresponding to the trigger signal, and adjusts the working current to the corresponding size. The different working currents will generate different speeds of the driving motor, thereby adjusting the suction force of the nasal aspirator. Specifically, the working current adjusted here cannot exceed the rated discharge current of the energy storage battery 200.

[0046] The nasal aspirator according to the second embodiment of the present application includes the nasal aspirator driving circuit disclosed in any of the above embodiments.

[0047] The nasal aspirator of the present application causes the power supply current of the driving motor to increase instantaneously after the nasal aspirator sucks in mucus. The control module 400 controls the current regulating module 100 to adjust the magnitude of the power supply current according to the current feedback signal, so that the power supply current is not too high and the energy storage battery 200 can supply power normally. This design stabilizes the working current of the driving motor, prevents damage to the energy storage battery 200, and improves durability.

[0048] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A nasal aspirator driving circuit, characterized in that: include: A current regulating module, used for connecting with a driving motor of the nasal aspirator to form a power supply branch; An energy storage battery, connected to the power supply branch to supply power to the drive motor; A current detection module, connected to the power supply branch to detect a current feedback signal, wherein the current feedback signal is used to characterize the magnitude of the power supply current; The control module is connected to the current detection module and the current regulation module respectively. The control module adjusts and outputs a control signal to the current regulation module according to a current feedback signal to adjust the magnitude of the power supply current.

2. A nasal aspirator driving circuit according to claim 1, characterized in that: The current regulation module includes a switch tube Q1, the energy storage battery is connected to the positive electrode of the drive motor, the input end of the switch tube Q1 is connected to the negative electrode of the drive motor, the output end of the switch tube Q1 is grounded, and the control module is connected to the controlled end of the switch tube Q1 to output a control signal to control the on and off of the switch tube Q1.

3. A nasal aspirator driving circuit according to claim 2, characterized in that: The current detection module includes a sampling resistor and a voltage divider resistor. The output end of the switch tube Q1 is connected to one end of the sampling resistor and one end of the voltage divider resistor respectively. The other end of the sampling resistor is grounded. The other end of the voltage divider resistor is connected to the control module.

4. A nasal aspirator driving circuit according to claim 1, characterized in that: The control module controls the current regulating module to regulate the supply current according to the current feedback signal so that the supply current is less than the rated discharge current of the energy storage battery.

5. A nasal aspirator driving circuit according to claim 1, characterized in that: It also includes a charging module, the input end of the charging module is used to connect to a charging power source, the charging module is used to adjust the output of the charging power source, and the output end of the charging module is connected to the energy storage battery.

6. A nasal aspirator driving circuit according to claim 5, characterized in that: It also includes a charging access detection module and a first prompt module, the charging access detection module is connected to the input end of the charging module to detect a charging access feedback signal, the charging access feedback signal is used to indicate whether the input end of the charging module is connected to a charging power source, the control module is respectively connected to the charging access detection module and the first prompt module, and the control module controls the first prompt module to output a first prompt information according to the charging access feedback signal.

7. A nasal aspirator driving circuit according to claim 5, characterized in that: It also includes a power detection module and a second prompt module, the power detection module is connected to the energy storage battery to detect a power feedback signal, the power feedback signal is used to characterize the storage capacity of the energy storage battery, the control module is connected to the power detection module and the second prompt module respectively, and the control module controls the second prompt module to output a second prompt information according to the power feedback signal.

8. A nasal aspirator driving circuit according to claim 1, characterized in that: The control signal output by the control module is a PWM duty cycle signal.

9. A nasal aspirator driving circuit according to claim 1, characterized in that: It also includes at least two gear buttons, and applying force to the gear buttons can form a trigger signal. The control modules are respectively connected to the gear buttons, and the control modules form control signals according to different trigger signals to adjust different working currents.

10. A nasal aspirator, characterized in that: A nasal aspirator driving circuit comprising any one of claims 1-9.

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