A control method and control device of a nasal irrigator and the nasal irrigator

Abstract

The application discloses a control method and device of a nasal washing device and the nasal washing device, and relates to the technical field of the nasal washing device. The control method of the nasal washing device comprises the following steps: in response to a start-up trigger signal, entering a start-up state and acquiring an interval duration of the nasal washing device from the last time when the nasal washing device is in a working state; based on the matching relationship between the interval duration and a preset interval duration interval, determining a target working mode, and controlling the nasal washing device to work according to the target working mode. The application aims to improve the cleaning degree of the nasal washing device on the nasal cavity.

Description

Technical Field

[0001] This invention relates to the field of nasal irrigator technology, and particularly to a control method, control device, and nasal irrigator for a nasal irrigator. Background Technology

[0002] A nasal irrigator is a medical or healthcare device used to clean the nasal cavity. It primarily uses saline solution to rinse the nasal passages, helping to remove mucus, allergens, dust, and bacteria, and relieving symptoms such as nasal congestion, rhinitis, and sinusitis. Existing electric nasal irrigators typically offer multiple operating modes to meet the needs of different users or in different scenarios. However, these modes are often manually selected by the user, requiring them to confirm the desired mode for effective nasal cleaning. If the user cannot effectively select the appropriate mode and duration, effective nasal cleaning may not be achieved. Summary of the Invention

[0003] The main objective of this invention is to provide a control method, control device, and nasal irrigator for improving the nasal cavity cleaning effect of the nasal irrigator.

[0004] To achieve the above objectives, the present invention proposes a control method for a nasal irrigator, the control method comprising:

[0005] In response to the power-on trigger signal, the device enters the power-on state and obtains the time interval between the last time the nasal irrigator was in the working state; Based on the matching relationship between the interval duration and the preset interval duration range, the target working mode is determined, and the nasal irrigator is controlled to work according to the target working module.

[0006] In one embodiment, before the step of entering the power-on state in response to the power-on trigger signal and obtaining the time interval between the last time the nasal irrigator was in the working state, the method further includes: In response to the power-on trigger signal of the nasal irrigator in the previous working state, the working time accumulation action is performed; In response to the shutdown trigger signal of the nasal irrigator when it was last in working state, the working time accumulation action ends and the accumulated working time is confirmed; If the cumulative working time is not less than the preset time, confirm that the nasal irrigator's cleaning action is effective. If the nasal irrigator's cleaning action is confirmed to be effective, determine and store the trigger time for the shutdown signal.

[0007] In one embodiment, the nasal irrigator includes a flow sensor for detecting the water output and a water outlet, wherein the detection end of the flow sensor is disposed at the water outlet; before the step of responding to a power-on trigger signal, entering the power-on state, and obtaining the time interval between the last time the nasal irrigator was in the working state, the method further includes: Acquire the flow detection signal, and if the water output corresponding to the flow detection signal is not less than the preset water output, confirm that the nasal irrigator's cleaning action is effective. If the nasal irrigator's cleaning action is confirmed to be effective, determine and store the trigger time for the shutdown signal.

[0008] In one embodiment, the step of determining the target working mode based on the matching relationship between the interval duration and the preset interval duration range specifically includes: When the interval duration is within the first preset interval duration range, the target operating mode corresponding to the current power-on trigger signal is determined to be the powerful pulse mode; When the interval duration is within the second preset interval duration range, the target operating mode corresponding to the current power-on trigger signal is determined to be the standard pulse mode; When the interval duration is within the third preset interval duration range, the target operating mode corresponding to the current power-on trigger signal is determined to be the low-voltage pulse mode.

[0009] In one embodiment, the nasal irrigator includes a battery, a motor, and a motor drive circuit connected to the battery and the motor respectively; after the step of determining the target working mode based on the matching relationship between the interval duration and the preset interval duration range, the method further includes: Based on the target operating mode corresponding to the current power-on trigger signal, confirm the preset power range and target drive mode corresponding to the target operating mode; The output voltage of the battery is obtained, and the drive signal output to the motor drive circuit is adjusted according to the output voltage of the battery and the target drive mode of the motor, so that the working power of the motor is within the preset power range corresponding to the target drive mode.

[0010] In one embodiment, the driving signal is a PWM signal, and the step of adjusting the driving signal output to the motor driving circuit according to the battery output voltage and the target driving mode of the motor so that the operating power of the motor is within a preset power range corresponding to the target driving mode specifically includes: The target duty cycle of the drive signal is determined based on the battery's output voltage and the motor's target drive mode. Adjust the duty cycle of the drive signal to the target duty cycle so that the motor's operating power is within the preset power range corresponding to the target drive mode.

[0011] In one embodiment, the step of acquiring the battery's output voltage and adjusting the drive signal output to the motor drive circuit based on the battery's output voltage and the motor's target drive mode further includes: When the motor starts working, the current duty cycle of the drive signal will be adjusted to the preset duty cycle at preset intervals until the duty cycle of the drive signal reaches the target duty cycle.

[0012] In one embodiment, the nasal irrigator further includes a prompting circuit, and the method further includes: The prompting circuit is controlled to operate according to the operating mode.

[0013] The present invention also proposes a control device, the control device comprising: a memory, a processor, and a control method for a nasal irrigator stored in the memory and executable on the processor, wherein the control program of the nasal irrigator is configured to implement the control method for the nasal irrigator as described in any of the preceding claims.

[0014] The present invention also proposes a nasal irrigator, which includes the control device as described above.

[0015] This invention provides a control method for a nasal irrigator, which effectively improves the cleaning effect on the nasal cavity. The control method includes: responding to a power-on trigger signal, entering a power-on state and acquiring the interval since the nasal irrigator last operated; determining a target operating mode based on the matching relationship between the interval and a preset interval range, and controlling the nasal irrigator to operate according to the target operating mode. It is understood that the frequency of a user's use of the nasal irrigator will cause different changes in the user's nasal cavity environment, or the user may adjust the frequency of use based on their own needs. This necessitates selecting a corresponding operating mode for the nasal irrigator to achieve nasal cavity cleaning while avoiding nasal injury. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a flowchart illustrating the control method of the nasal irrigator of the present invention; Figure 2 This is a flowchart illustrating an embodiment of the control method for the nasal irrigator of the present invention; Figure 3This is a flowchart illustrating another embodiment of the control method for the nasal irrigator of the present invention; Figure 4 This is a flowchart illustrating another embodiment of the control method for the nasal irrigator of the present invention; Figure 5 This is a flowchart illustrating another embodiment of the control method for the nasal irrigator of the present invention; Figure 6 This is a flowchart illustrating another embodiment of the control method for the nasal irrigator of the present invention.

[0018] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0021] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0022] A nasal irrigator is a medical or healthcare device used to clean the nasal cavity. It primarily uses saline solution to rinse the nasal passages, helping to remove mucus, allergens, dust, and bacteria, and relieving symptoms such as nasal congestion, rhinitis, and sinusitis. Existing electric nasal irrigators typically offer multiple operating modes to meet the needs of different users or in different scenarios. However, these modes are often manually selected by the user, requiring them to confirm the desired mode for effective nasal cleaning. If the user cannot effectively select the appropriate mode and duration, effective nasal cleaning may not be achieved.

[0023] To solve the above problems, refer to Figure 1 This invention proposes a control method for a nasal irrigator, characterized in that the control method includes: Step S100: In response to the power-on trigger signal, enter the power-on state and obtain the time interval between the last time the nasal irrigator was in the working state; Step S200: Based on the matching relationship between the interval duration and the preset interval duration range, determine the target working mode and control the nasal irrigator to work according to the target working module.

[0024] It is understandable that the surface of the nasal irrigator has at least two types of trigger buttons: a power on / off trigger button and a mode switch button, corresponding to the power on / off trigger circuit and the mode switch circuit, respectively. The two types of trigger buttons on the surface of the nasal irrigator correspond to the power on / off function and the mode switch function, respectively. The power on trigger button can output power on and power off trigger signals through repeated single-button presses. Therefore, by triggering the power on / off trigger button, the controller in the nasal irrigator receives the power on trigger signal, and then outputs the corresponding control signal to the motor, causing the motor to drive the liquid in the water tank to be sprayed into the user's nasal cavity through the outlet.

[0025] In this embodiment, the control device enters the power-on state upon receiving a power-on trigger signal and confirms the end time of the nasal irrigator's last working state, thereby determining the interval since the nasal irrigator last operated. It can be understood that the control device can receive the switch trigger signal output by the switch trigger button, and then determine whether the current switch trigger signal is a power-on or power-off trigger signal based on the number of times the switch trigger signal is triggered. The number of times the switch trigger signal is triggered can be understood as an odd number indicating a power-on trigger signal and an even number indicating a power-off trigger signal. The control device receives the switch trigger signal and confirms whether it is a power-on or power-off trigger signal, and uses a clock circuit built into the control device to time the interval since the nasal irrigator last operated. Furthermore, a corresponding Bluetooth module or 4G module can be installed in the nasal irrigator to enable it to obtain accurate time. For example, if the nasal irrigator was last in working condition at 7:00 AM and responded to the power-on trigger signal at 7:00 PM, then the interval between the last time the nasal irrigator was in working condition is 12 hours; if the nasal irrigator was last in working condition at 7:00 AM and responded to the power-on trigger signal at 7:00 AM the next day, then the interval between the last time the nasal irrigator was in working condition is 24 hours.

[0026] In this embodiment, the control device is equipped with multiple preset interval duration ranges, each corresponding to a working mode of the nasal irrigator. Therefore, the control device can determine the target working mode based on the matching relationship between the interval duration and the preset interval duration ranges, and control the nasal irrigator to operate according to the target working mode. It is understood that the nasal irrigator can be equipped with modes such as a strong constant flow mode, a high-frequency pulse mode, a standard pulse mode, a gentle spray mode, or a low-pressure pulse mode to meet different user needs. For example, when a user is in an acute phase (such as a cold, an allergic rhinitis flare-up, or an acute sinusitis phase), nasal secretions are abundant and viscous. At this time, the user may use the nasal irrigator more frequently to rinse the nasal cavity. This results in the user's nasal cavity needing a strong water flow to flush away the secretions, while avoiding damage to the nasal mucosa caused by frequent nasal rinsing.

[0027] refer to Figure 2 Optionally, the step of determining the target working mode based on the matching relationship between the interval duration and the preset interval duration range specifically includes: Step S210: When the interval duration is within the first preset interval duration range, determine that the target working mode corresponding to the current power-on trigger signal is the powerful pulse mode; Step S220: When the interval duration is within the second preset interval duration range, determine that the target working mode corresponding to the current power-on trigger signal is the standard pulse mode; Step S230: When the interval duration is within the third preset interval duration range, determine that the target working mode corresponding to the current power-on trigger signal is the low-voltage pulse mode.

[0028] In this embodiment, three preset interval duration ranges are set: a first preset interval duration range, a second preset interval duration range, and a third preset interval duration range. The target operating mode corresponding to the first preset interval duration range is a high-pressure pulse mode, the target operating mode corresponding to the second preset interval duration range is a standard pulse mode, and the target operating mode corresponding to the third preset interval duration range is a low-pressure pulse mode. It should be noted that the maximum value of the first preset interval duration range is less than the minimum value of the second preset interval duration range, and the maximum value of the second preset interval duration range is less than the minimum value of the third preset interval duration range. In other words, the first, second, and third preset interval duration ranges correspond to short, medium, and long time intervals for the user to use the nasal irrigator, respectively. For example, if the interval duration falls within the first preset interval duration range, it can be confirmed that the user uses the nasal irrigator frequently, possibly during an acute attack (such as a cold, an allergic rhinitis flare-up, or an acute sinusitis episode), with abundant and viscous nasal secretions. The control device automatically selects a high-pressure pulse mode, which increases the water volume per flush (e.g., from 200ml to 300ml) to ensure thorough removal of large amounts of purulent nasal discharge. If the interval is within the third preset interval range, it indicates that the user is using the nasal irrigator infrequently, and that the nasal cavity may have accumulated a significant amount of dried crusts, or the mucous membrane may be relatively dry / sensitive. In this case, the control device will automatically select a low-pressure pulse mode to avoid direct impact of high-pressure water flow on potentially dry and fragile mucous membranes, which could cause pain or bleeding.

[0029] By employing a control method for a nasal irrigator, the cleaning effect on the nasal cavity can be effectively improved. The control method includes: responding to a power-on trigger signal, entering a power-on state, and acquiring the interval since the nasal irrigator last operated; determining a target operating mode based on the matching relationship between the interval and a preset interval range, and controlling the nasal irrigator to operate according to the target operating mode. It is understood that the frequency of a user's use of the nasal irrigator will cause different changes in the user's nasal cavity environment, or the user may adjust the frequency of use based on their own needs. This necessitates that the nasal irrigator select an appropriate operating mode to achieve nasal cavity cleaning while avoiding nasal injury.

[0030] refer to Figure 3In one embodiment of the present invention, before the step of responding to the power-on trigger signal, entering the power-on state, and obtaining the time interval between the last time the nasal irrigator was in the working state, the method further includes: Step S300: In response to the power-on trigger signal of the nasal irrigator in the previous working state, perform the working time accumulation action; Step S400: In response to the shutdown trigger signal of the nasal irrigator when it was in working state last time, end the working time accumulation action and confirm the accumulated working time; Step S500: If the cumulative working time is not less than the preset time, confirm that the nasal irrigator's cleaning action is effective. Step S600: If the cleaning action of the nasal irrigator is confirmed to be effective, determine and store the trigger time of the shutdown trigger signal.

[0031] It's understandable that the user might have input a power-on signal via the power button, but then shortly after, input a power-off signal via the same button, resulting in the nasal irrigator not functioning effectively. Therefore, the control device needs to avoid rejecting ineffective operation states to prevent interference with the interval recording.

[0032] In this embodiment, when the control device receives a power-on trigger signal from the switch trigger button, it performs a cumulative working time operation via a clock circuit. Upon receiving a power-off trigger signal from the switch trigger button, it ends the cumulative working time operation and confirms the cumulative working time. This method confirms the working time of the nasal irrigator between the power-on and power-off trigger signals, i.e., the cumulative working time. It should be noted that the preset time can be set according to the minimum working time of the corresponding working mode to confirm whether the current working state is a valid working state, i.e., effective cleaning. If the cumulative working time is not less than the preset time, the nasal irrigator's cleaning action is confirmed as effective cleaning; if the cumulative working time is less than the preset time, the nasal irrigator's cleaning action is confirmed as invalid cleaning. If the nasal irrigator's cleaning action is confirmed as effective cleaning, the trigger time of the power-off trigger signal is determined and stored. In other words, if the nasal irrigator's cleaning action is confirmed to be effective, the control device will determine and store the end time of this working state based on the trigger time of the power-off trigger signal. For example, the end time of this working state may be a certain year, month, day, and hour. This allows the control device to automatically select the corresponding target working mode based on the interval between the last time the nasal irrigator was in a working state when it receives the power-on trigger signal next time.

[0033] refer to Figure 4In one embodiment of the present invention, the nasal irrigator includes a flow sensor for detecting the water output and a water outlet, wherein the detection end of the flow sensor is disposed at the water outlet; before the step of responding to a power-on trigger signal, entering the power-on state, and obtaining the time interval between the last time the nasal irrigator was in the working state, the method further includes: Step S700: Obtain the flow detection signal, and if the water output corresponding to the flow detection signal is not less than the preset water output, confirm that the nasal irrigator's cleaning action is effective. Step S800: If the cleaning action of the nasal irrigator is confirmed to be effective, determine and store the trigger time of the shutdown trigger signal.

[0034] It is understandable that the user may have input a power-on trigger signal via the power button, but the user did not control the nasal irrigator to output the corresponding liquid within the standby device, resulting in the nasal irrigator not working effectively. Therefore, the control device needs to avoid rejecting ineffective working states to prevent the nasal irrigator's ineffective operation from interfering with the interval duration.

[0035] In this embodiment, a flow sensor is installed at the outlet of the nasal irrigator to detect the water output. It is understood that the nasal irrigator rinses the nasal cavity by spraying a liquid. Therefore, if the amount of liquid sprayed by the nasal irrigator is less than a certain volume, the cleaning operation can be considered ineffective. The preset water output can be set based on various operating modes of the nasal irrigator. By electrically connecting the flow sensor and the control device, the flow detection signal output by the flow sensor is received and processed. The control device needs to confirm that the flow rate corresponding to the flow detection signal is the total flow rate of the nasal irrigator at the beginning and end of a working state based on the input of the power-on and power-off trigger signals, thus avoiding erroneous judgments caused by intermediate stops in the flow detection signal output during a working state.

[0036] refer to Figure 5 In one embodiment of the present invention, the nasal irrigator includes a battery, a motor, and a motor drive circuit connected to the battery and the motor respectively; after the step of determining the target working mode based on the matching relationship between the interval duration and the preset interval duration range, the method further includes: Step S110: Based on the target operating mode corresponding to the current power-on trigger signal, confirm the preset power range and target drive mode corresponding to the target operating mode; Step S120: Obtain the output voltage of the battery, and adjust the drive signal output to the motor drive circuit according to the output voltage of the battery and the target drive mode of the motor, so that the working power of the motor is within the preset power range corresponding to the target drive mode.

[0037] In this embodiment, the surface of the nasal irrigator body is provided with at least one trigger button, which the user can trigger to turn on the nasal irrigator and switch modes. Depending on actual needs, the nasal irrigator can be set to multiple driving modes, which can be switched one-to-one through multiple trigger buttons, or through continuous triggering of a single button to achieve continuous switching of driving modes. For example, the nasal irrigator can have three working modes: a strong pulse mode, a standard pulse mode, and a low-pressure pulse mode. These three working modes correspond to three different driving modes, designed to meet the diverse nasal cleaning needs and sensitivities of users. The standard pulse mode typically provides medium to high water pressure, suitable for most daily cleaning scenarios. The low-pressure pulse mode is suitable for first-time users or people with sensitive nasal passages. It provides lower water pressure than the standard mode to reduce irritation to the nasal soft tissues, ensuring gentle cleaning and helping users gradually adapt to using the nasal irrigator. The strong pulse mode achieves cleaning through strong water pulses, which can produce a powerful cleaning effect in a short time. Compared to continuous water flow, pulsed water flow can more effectively remove foreign objects from the nasal cavity without increasing the overall water pressure. As described above, the control device can automatically select the target operating mode based on the time interval. Therefore, the control device will determine the target drive mode corresponding to the motor based on the target operating mode, so that the motor operates according to the drive signal corresponding to the mode trigger signal.

[0038] Understandably, when the motor is powered by a battery, the battery's internal voltage gradually decreases due to continuous power supply, leading to a decrease in the motor's supply voltage. This decrease in motor supply voltage results in a reduction in motor speed, causing the pump to be unable to stably output water from the nasal irrigator's tank, thus negatively impacting the user experience. Therefore, to ensure a relatively stable motor speed, the motor's operating power must also be kept relatively stable, limited to a preset range. It's important to understand that nasal irrigators typically use DC motors to drive the pump, and these motors are usually driven by PWM signals that adjust the average voltage of the power supply to the motor, thereby controlling its speed. By changing the pulse width—the ratio of the high-level duration to the total cycle (duty cycle)—fine-tuning of the motor speed can be achieved without altering the supply voltage. Since the battery's internal voltage continuously decreases due to the nasal irrigator's operation, not changing the pulse width of the PWM signal driving the DC voltage will cause the motor speed to decrease. The battery's output voltage is essentially the motor's supply voltage. Therefore, to ensure the motor speed remains relatively stable, the ratio of high-level duration to the total cycle needs to be increased. This is achieved by adjusting the drive signal output to the drive circuit through the battery's output voltage, ensuring the motor's operating power remains within the preset power range corresponding to the target drive mode. The battery output voltage is determined by a voltage detection circuit. Furthermore, the motor speed is also related to the drive mode. Different drive modes result in different motor speeds. For example, when the nasal irrigator is in low-voltage pulse mode, the motor speed is relatively slow; while in high-voltage pulse mode, the motor speed is relatively fast. Therefore, the motor drive signal also needs to be adjusted according to the drive mode.

[0039] In this embodiment, the drive signal controls the motor's operating power, thereby controlling the motor speed and switching. It is understood that the drive signal directly acts on the drive circuit, controlling the battery's power supply to the motor. Furthermore, the drive circuit can be implemented using multiple switching circuits, which can be implemented using, for example, MOSFETs, IGBTs, thyristors, transistors, power transistors, etc. The nasal irrigator outputs a corresponding PWM signal through the control device to control the switching circuits to turn on or off, thereby changing the motor's operating power and thus changing the motor's speed, starting, or stopping.

[0040] In this embodiment, the required driving mode for the motor is determined by acquiring the mode trigger signal, and the output voltage of the battery in the nasal irrigator is acquired. The required driving mode is then used as the target to be achieved by the motor. By establishing the relationship between the battery output voltage and the driving signal for the motor, the driving signal for the motor is adjusted when the battery output voltage changes, ensuring that the motor's operating power remains relatively stable. This, in turn, guarantees that the water pressure output by the nasal irrigator remains relatively stable under a given driving mode.

[0041] refer to Figure 6 Optionally, the driving signal is a PWM signal, and the step of adjusting the driving signal output to the motor driving circuit according to the battery output voltage and the target driving mode of the motor so that the operating power of the motor is within the preset power range corresponding to the target driving mode is specifically as follows: Step S121: Determine the target duty cycle of the drive signal based on the battery output voltage and the target drive mode of the motor; Step S122: Adjust the duty cycle of the drive signal to the target duty cycle so that the operating power of the motor is within the preset power range corresponding to the target drive mode.

[0042] In this embodiment, the battery output voltage can be obtained using a voltage detection circuit, which can be implemented using a resistor voltage divider sampling circuit, a linear operational amplifier voltage sampling circuit, a voltage sampling transformer, etc. The nasal irrigator obtains the battery output voltage, i.e., the motor's power supply voltage, through the voltage detection signal output by the voltage detection circuit. The control device converts the input voltage detection signal into a corresponding voltage value using a built-in analog-to-digital converter module, thereby confirming the battery output voltage. It is understood that the battery output voltage directly affects the motor's operating power in the nasal irrigator. Therefore, a preset correspondence is built into the control device, meaning there is a correspondence between the battery output voltage and the drive signal that drives the motor. Furthermore, the drive mode to be executed by the motor needs to be considered. Further, it is understood that the motor drive can be implemented using PWM signal control, direct voltage change control, resistor control, current chopping control, etc. Taking the motor drive signal as a PWM signal as an example, the motor drive mode can be switched and controlled by changing the duty cycle and output frequency of the PWM signal. It's easy to understand that as the nasal irrigator continues to operate, the battery's output voltage gradually decreases, meaning the motor's supply voltage also gradually decreases. Increasing the PWM signal's duty cycle means increasing the proportion of high-level signals within a PWM cycle. Although the voltage of a single pulse remains the reduced battery output voltage, the longer high-level duration increases the effective average voltage across the motor. This increases the motor's average input power without significantly increasing instantaneous current, thus maintaining the motor's speed. Specifically, for different drive modes, the corresponding PWM duty cycle differs for the same supply voltage. The voltage value corresponding to the voltage detection signal is inversely proportional to the duty cycle of the PWM signal driving the motor; that is, the larger the voltage value of the voltage detection signal, the smaller the duty cycle of the PWM signal driving the motor; conversely, the smaller the voltage value of the voltage detection signal, the larger the duty cycle of the PWM signal driving the motor.

[0043] Optionally, the step of acquiring the battery's output voltage and adjusting the drive signal output to the motor drive circuit according to the battery's output voltage and the motor's target drive mode further includes: When the motor starts working, the current duty cycle of the drive signal will be adjusted to the preset duty cycle at preset intervals until the duty cycle of the drive signal reaches the target duty cycle.

[0044] In this embodiment, to ensure the responsiveness of the nasal irrigator's drive mode activation and mode switching, the control device sets the current drive mode before the nasal irrigator receives a mode trigger signal for power-on. However, as the nasal irrigator's usage time increases, its internal circuit impedance also increases, and the battery's activity is affected. This leads to a greater difference between the battery voltage during actual motor operation and the voltage in the static state. Consequently, when the user turns on the nasal irrigator, the water pressure will suddenly increase from low to high. Although the increased water pressure meets the actual requirements of the target drive mode, the sudden change in water pressure output can mislead the user into believing that the product has stability issues. Therefore, when the motor starts working, the control device adjusts the drive signal output to the drive circuit based on the voltage of the nasal irrigator in the static state and the drive mode retained from the last operation. It is easy to understand that the output voltage obtained in the static state is greater than the output voltage in the operating state. Therefore, the working power obtained by the motor at this time is lower than the corresponding preset power range. By setting a preset interval, the drive circuit is gradually adjusted. For example, in normal operating mode, the voltage detection circuit detects an output voltage of 4.0V when the battery is at rest, with a target duty cycle of 79.2% for the corresponding drive signal. When the battery is in operation, the voltage detection circuit detects an output voltage of 3.9V, with a target duty cycle of 80.8% for the corresponding drive signal. Therefore, in response to the mode trigger signal, when the motor starts working, the duty cycle of the drive signal input to the drive circuit will abruptly change from 79.2% to 80.8%, causing a sudden increase in the motor's output power and consequently, a greater increase in water pressure driven by the pump. Furthermore, with a preset interval of 0.3 seconds and a preset duty cycle of 0.4%, the duty cycle of the drive signal input to the drive circuit will change from 79.2% to 80.8% in 1.2 seconds. This setting method ensures that the water pressure output by the nasal irrigator changes slowly over a certain period, effectively avoiding the technical problem of sudden water pressure changes.

[0045] In one embodiment of the present invention, the nasal irrigator further includes a prompting circuit, and the method further includes: The prompting circuit is controlled to operate according to the operating mode.

[0046] In this embodiment, to facilitate users' intuitive understanding of the nasal irrigator's current status (e.g., whether the nasal irrigator is turned on, its operating mode, and its battery level), the nasal irrigator is equipped with multiple indicator circuits. These indicator circuits can be configured as LED indicator circuits, with their inputs electrically connected to the control device. When the control device receives a power-on trigger signal and / or a mode switching signal, it outputs an indicator control signal to the indicator circuit, causing the indicator circuit to output an indicator signal. For example, when the control device receives a power-on signal from the power-on trigger circuit, it outputs an indicator control signal to the corresponding indicator circuit indicating whether the nasal irrigator is turned on. Furthermore, to help users clearly understand the current status of the nasal irrigator corresponding to different indicator circuits, corresponding text indicators are etched or printed on the surface of the nasal irrigator body. When the control device receives a mode switching signal from the mode switching circuit, it outputs an indicator control signal to the indicator circuit corresponding to the nasal irrigator's current driving mode. It is understood that the number of nasal irrigator driving modes corresponds to the number of corresponding indicator circuits, ensuring that each indicator circuit corresponds to each driving mode. The indicator circuit can also use LEDs of different colors to represent different operating modes.

[0047] The present invention also proposes a control device, comprising: a memory, a processor, and a control method for a nasal irrigator stored in the memory and executable on the processor, wherein the control program for the nasal irrigator is configured to implement the control method for the nasal irrigator as described in any of the preceding claims. It is worth noting that, since the control device of the present invention is based on the aforementioned control method for a nasal irrigator, the embodiments of the control device of the present invention include all the technical solutions of all embodiments of the aforementioned control method for a nasal irrigator, and the achieved technical effects are also completely identical, and will not be repeated here.

[0048] The present invention also proposes a nasal irrigator, which includes the control device as described above. It is worth noting that, since the nasal irrigator of the present invention is based on the aforementioned control device, the embodiments of the battery module of the present invention include all the technical solutions of all embodiments of the aforementioned control device, and the achieved technical effects are exactly the same, and will not be repeated here.

[0049] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for controlling a nasal irrigator, characterized in that, The control method for the nasal irrigator includes: In response to the power-on trigger signal, the device enters the power-on state and obtains the time interval between the last time the nasal irrigator was in the working state; Based on the matching relationship between the interval duration and the preset interval duration range, the target working mode is determined, and the nasal irrigator is controlled to work according to the target working module.

2. The control method for the nasal irrigator as described in claim 1, characterized in that, Before the step of responding to the power-on trigger signal, entering the power-on state, and obtaining the time interval between the last time the nasal irrigator was in working state, the method further includes: In response to the power-on trigger signal of the nasal irrigator in the previous working state, the working time accumulation action is performed; In response to the shutdown trigger signal of the nasal irrigator when it was last in working state, the working time accumulation action ends and the accumulated working time is confirmed; If the cumulative working time is not less than the preset time, confirm that the nasal irrigator's cleaning action is effective. If the nasal irrigator's cleaning action is confirmed to be effective, determine and store the trigger time for the shutdown signal.

3. The control method for the nasal irrigator as described in claim 1, characterized in that, The nasal irrigator includes a flow sensor for detecting the water output and a water outlet, wherein the detection end of the flow sensor is disposed at the water outlet; prior to the step of responding to a power-on trigger signal, entering the power-on state, and obtaining the time interval between the last time the nasal irrigator was in the working state, the method further includes: Acquire the flow detection signal, and if the water output corresponding to the flow detection signal is not less than the preset water output, confirm that the nasal irrigator's cleaning action is effective. If the nasal irrigator's cleaning action is confirmed to be effective, determine and store the trigger time for the shutdown signal.

4. The control method for the nasal irrigator as described in claim 1, characterized in that, The step of determining the target working mode based on the matching relationship between the interval duration and the preset interval duration range specifically includes: When the interval duration is within the first preset interval duration range, the target operating mode corresponding to the current power-on trigger signal is determined to be the powerful pulse mode; When the interval duration is within the second preset interval duration range, the target operating mode corresponding to the current power-on trigger signal is determined to be the standard pulse mode; When the interval duration is within the third preset interval duration range, the target operating mode corresponding to the current power-on trigger signal is determined to be the low-voltage pulse mode.

5. The control method for the nasal irrigator as described in claim 1, characterized in that, The nasal irrigator includes a battery, a motor, and a motor drive circuit connected to the battery and the motor respectively; after the step of determining the target working mode based on the matching relationship between the interval duration and the preset interval duration range, the method further includes: Based on the target operating mode corresponding to the current power-on trigger signal, confirm the preset power range and target drive mode corresponding to the target operating mode; The output voltage of the battery is obtained, and the drive signal output to the motor drive circuit is adjusted according to the output voltage of the battery and the target drive mode of the motor, so that the working power of the motor is within the preset power range corresponding to the target drive mode.

6. The control method for the nasal irrigator as described in claim 5, characterized in that, The driving signal is a PWM signal. The step of adjusting the driving signal output to the motor driving circuit according to the battery output voltage and the target driving mode of the motor, so that the operating power of the motor is within the preset power range corresponding to the target driving mode, specifically includes: The target duty cycle of the drive signal is determined based on the battery's output voltage and the motor's target drive mode. Adjust the duty cycle of the drive signal to the target duty cycle so that the motor's operating power is within the preset power range corresponding to the target drive mode.

7. The control method for the nasal irrigator as described in claim 5, characterized in that, The step of acquiring the battery's output voltage and adjusting the drive signal output to the motor drive circuit based on the battery's output voltage and the motor's target drive mode further includes: When the motor starts working, the current duty cycle of the drive signal will be adjusted to the preset duty cycle at preset intervals until the duty cycle of the drive signal reaches the target duty cycle.

8. The control method for the nasal irrigator as described in claim 1, characterized in that, The nasal irrigator also includes a prompting circuit, and the method further includes: The prompting circuit is controlled to operate according to the operating mode.

9. A control device, characterized in that, The control device includes: a memory, a processor, and a control method for a nasal irrigator stored in the memory and executable on the processor, wherein the control program for the nasal irrigator is configured to implement the control method for the nasal irrigator as described in any one of claims 1-8.

10. A nasal irrigator, characterized in that, The nasal irrigator includes the control device as described in claim 9.

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