A method, apparatus and system for atomization control

Abstract

This invention discloses an atomization control method, device, and system, relating to the field of electronic atomization technology. It aims to solve the technical problems of battery overload in ultrasonic atomization devices due to chasing the highest resonance point, and the mismatch between actual output power and atomization demand. This invention determines the target power based on the power range defined by the safe power threshold of the power supply system and the atomization demand. It determines the adjustment step of the driving frequency based on the difference between the current power and the target power, and combines the current power and the target power, as well as the relationship between the current power and the driving frequency from the previous moment, to determine the frequency adjustment direction. This allows for the adjustment of the driving frequency of the vibration control circuit of the ultrasonic atomizing plate to bring the power of the ultrasonic atomizing plate closer to the target power. This invention reduces battery load and extends its lifespan, achieves matching of system power output with the atomization demand, and significantly improves the stability of the ultrasonic atomization system.

Description

Technical Field

[0001] This invention relates to the field of electronic atomization technology, and in particular to an atomization control method, device and system. Background Technology

[0002] Ultrasonic atomization systems are widely used in various atomizing electronic devices such as electronic cigarettes, humidifiers, and medical atomization equipment. They primarily use ultrasonic atomizing plates to atomize target liquids into tiny liquid particles, which are then expelled to form an aerosol. In practical use, the resonant frequency of the ultrasonic atomizing plate changes with increasing operating temperature, causing a drift in the overall power-resonant frequency curve. Existing frequency tracking methods typically continuously follow the highest resonant frequency of the atomizing plate to achieve maximum atomization effect. However, requiring the ultrasonic atomizing plate to operate at its resonant frequency places extremely high demands on the power supply system (including the battery and the boost module connected to the battery). Furthermore, prolonged high-intensity full-load operation not only severely impacts battery performance and lifespan but also causes the actual power output of the power supply system to fail to match the target power required for the amount of vapor generated by the ultrasonic atomizing plate, thus significantly reducing the stability of the entire ultrasonic atomization system. Summary of the Invention

[0003] The purpose of this invention is to provide an atomization control method, device, and system to solve the technical problems in the prior art of ultrasonic atomization equipment, such as battery overload damage caused by continuous frequency tuning to follow the highest resonant point, and the mismatch between actual output and target power.

[0004] To address the aforementioned technical problems, this invention provides an atomization control method applied to a processor, comprising: Obtain the current power of the ultrasonic atomizing plate and the driving frequency of the vibration control circuit of the ultrasonic atomizing plate. Determine the difference between the current power and the target power, and determine the adjustment step of the drive frequency based on the difference; the target power is set within a power range that matches the safe power threshold of the power supply system of the ultrasonic atomizing plate vibration control circuit with the mist output requirement of the ultrasonic atomizing plate. Based on the relationship between the current power and the target power, the relationship between the current power and the power of the previous moment, and the relationship between the current driving frequency and the driving frequency of the previous moment, determine the adjustment direction of the driving frequency adjustment step. The driving frequency of the vibration control circuit is adjusted according to the adjustment step and adjustment direction of the driving frequency until the difference between the current power of the ultrasonic atomizing plate and the target power is within the preset range.

[0005] Optionally, obtain the current power of the ultrasonic nebulizer, including: Obtain the current voltage and current of the ultrasonic atomizing plate; The power of the ultrasonic atomizing plate at the current moment is determined based on the voltage and current at the current moment.

[0006] Optionally, the adjustment step size of the drive frequency is determined based on the difference, including: Determine whether the difference value is within a preset range; If so, then the adjustment step of the drive frequency is set to zero; If not, the adjustment step of the driving frequency is determined based on the magnitude of the difference; wherein, the adjustment step of the driving frequency is positively correlated with the magnitude of the difference, and the adjustment step of the driving frequency and the difference are in a step-like manner.

[0007] Optionally, the adjustment step size of the drive frequency is positively linearly related to the magnitude of the difference.

[0008] Optionally, the processor's clock source may include a dedicated clock source for generating PWM signals.

[0009] Optionally, the driving frequency of the vibration control circuit can be adjusted according to the adjustment step size and adjustment direction of the driving frequency, including: The frequency of a single PWM drive signal is determined by the adjustment step and direction of the drive frequency, so that the signal processing module can generate two complementary PWM drive signals based on the single PWM drive signal and output them to the vibration control circuit.

[0010] Optionally, based on the relationship between the current power and the target power, the relationship between the current power and the power at the previous moment, and the relationship between the current driving frequency and the driving frequency at the previous moment, the adjustment direction of the driving frequency adjustment step is determined, including: Based on the relationship between the power at the current moment and the power at the previous moment, and the relationship between the driving frequency at the current moment and the driving frequency at the previous moment, determine the correlation between power and driving frequency under the current working state. When the power and drive frequency are positively correlated in the current working state, if the power at the current moment is less than the target power, then the adjustment direction of the drive frequency adjustment step is determined to be the direction of increasing the drive frequency. If the current power is greater than the target power, then the adjustment direction of the driving frequency adjustment step is determined to be the direction of decreasing the driving frequency. When the power and drive frequency are negatively correlated in the current working state, if the power at the current moment is less than the target power, then the adjustment direction of the drive frequency adjustment step is determined to be the direction of decreasing the drive frequency. If the current power is greater than the target power, then the adjustment direction of the drive frequency adjustment step is determined to be the direction of increasing the drive frequency.

[0011] To address the above problems, the present invention also provides an atomization control device, comprising: Memory, used to store computer programs; A processor is used to execute computer programs to implement the steps of the atomization control method described above.

[0012] To address the above problems, the present invention also provides an atomization control system, comprising: Ultrasonic atomizing sheet; The data acquisition unit is used to acquire the voltage and current of the ultrasonic atomizing plate; The suction switch has its output connected to the controlled end of the processor. As described above, the processor's input is connected to the output of the acquisition unit, and its output is connected to the input of the signal processing module. The signal processing module's output is connected to the vibration control circuit. Vibration control circuit, which is connected to the ultrasonic atomizing plate.

[0013] Optional, also includes: The battery's output terminals are connected to the power supply terminals of the acquisition unit, suction switch, processor, signal processing module, and boost module, respectively. The boost module's output is connected to the power supply terminal of the vibration control circuit.

[0014] This invention provides an atomization control method. First, it acquires the current power of the ultrasonic atomizing plate and the driving frequency of its vibration control circuit. Based on the power range determined by the power system's safe power threshold and the required mist output, a target power is determined, avoiding the pursuit of the highest resonance point and thus preventing prolonged full-load operation of the ultrasonic atomizing plate. Further, the difference between the current power and the target power is calculated to determine the adjustment step of the driving frequency. Combining the relationship between the current power and the target power, as well as the relationship between the current power and the driving frequency from the previous moment, the direction of driving frequency adjustment is determined. This allows for adjustment of the driving frequency of the ultrasonic atomizing plate's vibration control circuit to bring the ultrasonic atomizing plate's power closer to the target power. Through this method, the invention reduces the requirements on the power supply system, extends battery life, and ensures that the actual power output of the power supply system matches the target power required for the ultrasonic atomizing plate to generate the desired amount of mist, significantly improving the long-term stability of the ultrasonic atomization system.

[0015] The present invention also provides an atomization control system and apparatus, both of which have the same beneficial effects as the atomization control method described above. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the prior art and embodiments 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 these drawings without creative effort.

[0017] Figure 1 A flowchart of an atomization control method provided by the present invention; Figure 2 A power-drive frequency curve of an ultrasonic atomizing plate provided by the present invention; Figure 3 A flowchart of another atomization control method provided by the present invention; Figure 4 A structural diagram of an atomization control system provided by the present invention; Figure 5 A structural diagram of another atomization control system provided by the present invention; Figure 6 This is a structural diagram of another atomization control system provided by the present invention. Detailed Implementation

[0018] The core of this invention is to provide an atomization control method, device, and system that can reduce the requirements for the power supply system, extend battery life, and ensure that the actual power output of the power supply system matches the target power required for the amount of smoke generated by the ultrasonic atomizing plate, thereby significantly improving the long-term stability of the ultrasonic atomization system.

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Ultrasonic atomization systems are widely used in devices such as electronic cigarettes, humidifiers, medical atomization, and beauty atomization. They primarily use ultrasonic atomizing plates to atomize the target liquid into tiny liquid particles, which are then expelled to form an aerosol. In actual operation, the power-drive frequency curve of the ultrasonic atomizing plate often drifts due to increased operating temperature. Current technologies typically employ a control strategy that continuously tracks the highest resonant frequency to maximize atomization. However, this control method requires the system to continuously operate at full load, which can easily lead to battery overload and damage, shortening its lifespan. Furthermore, it results in a mismatch between the actual output power and the target power required to generate the desired amount of vapor, significantly reducing the overall stability of the system.

[0021] To address the aforementioned technical problems, this invention provides an atomization control method applied to a processor. Please refer to [link to relevant documentation]. Figure 1 As shown, Figure 1 A flowchart of an atomization control method provided by the present invention.

[0022] The atomization control method includes: S11. Obtain the current power of the ultrasonic atomizing plate and the driving frequency of the vibration control circuit of the ultrasonic atomizing plate. In practical applications, this method is used in ultrasonic atomization systems. Because the ultrasonic atomizing plate generates heat during continuous vibration, its internal impedance characteristics and the corresponding power-drive frequency curve drift with temperature changes. Therefore, before adjusting the drive frequency, the ultrasonic atomization system must first capture the current operating state of the ultrasonic atomizing plate, i.e., obtain the current power and corresponding drive frequency. Specifically, before each adjustment, the processor in the atomization control system needs to sample the electrical signal of the ultrasonic atomizing plate using a data acquisition unit and calculate the current power. Furthermore, the processor can obtain the frequency of the currently output drive signal by reading the register parameters at the current moment. Since the mechanical vibration of the ultrasonic atomizing plate is controlled by the drive signal, the frequency of this drive signal essentially determines the vibration frequency of the ultrasonic atomizing plate.

[0023] As can be seen, step S11 obtains the current working state of the atomization control system in real time by acquiring the power of the ultrasonic atomizing plate and the driving frequency of the vibration control circuit of the ultrasonic atomizing plate, providing a data basis for further adjustment of the driving frequency.

[0024] S12. Determine the difference between the current power and the target power, and determine the adjustment step of the driving frequency based on the difference; the target power is set based on the power range that matches the safe power threshold of the power supply system of the vibration control circuit of the ultrasonic atomizing plate with the mist output requirement of the ultrasonic atomizing plate. like Figure 2 As shown, Figure 2The diagram illustrates the power-drive frequency curve of the ultrasonic atomizing plate provided by this invention. It should be noted that changes in the drive frequency output by the processor will cause corresponding physical changes in the mechanical vibration frequency and actual power of the ultrasonic atomizing plate. That is, the power of the ultrasonic atomizing plate will fluctuate with a specific curve as the drive frequency changes. In actual operation, continuously pursuing the highest resonance point FC requires the system to continuously output at full load, which can easily lead to overload of the power supply system. Therefore, step S12 presets a target power based on the actual load capacity of the power supply system and the required mist output. Specifically, the system first calculates a safe power threshold by multiplying the maximum output power of the power supply system for the vibration control circuit of the ultrasonic atomizing plate by a preset safety factor. Subsequently, considering the mist output requirements that can meet the user's inhalation experience, a suitable operating power range for the ultrasonic atomizing plate is determined within the safe power threshold, such as... Figure 2 The power range from P1 to P2 shown can be used to determine the target power, and the midpoint of this power range, P0, can be established.

[0025] Furthermore, after calculating the difference between the current power and the target power P0, the system will determine the adjustment step of the driving frequency based on the absolute value of the difference: the larger the absolute value of the difference, the larger the adjustment step of the driving frequency, so as to quickly approach the target power P0; the smaller the difference, the smaller the adjustment step of the driving frequency, so as to achieve more precise fine-tuning and avoid the situation where the power of the ultrasonic atomizing plate fluctuates repeatedly around the target power P0.

[0026] As can be seen, step S12 introduces a target power P0 based on the power supply load capacity and atomization effect, which avoids the system being in a state of extreme full load for a long time, relieves the pressure on the battery, and uses the difference between the current power and the target power P0 to determine the adjustment step of the drive frequency, which speeds up the frequency tracking response and improves the final fine-tuning accuracy.

[0027] S13. Based on the relationship between the current power and the target power, the relationship between the current power and the power of the previous moment, and the relationship between the current driving frequency and the driving frequency of the previous moment, determine the adjustment direction of the driving frequency adjustment step. Furthermore, the power-drive frequency curve of the ultrasonic atomizing plate is as follows: Figure 2As shown, because the ultrasonic atomizing plate generates heat during continuous high-frequency operation, the curve is easily affected by temperature and drifts laterally to the right. If the system still searches for the resonant point according to a fixed mode, it is very easy to misjudge the frequency modulation direction due to the curve deviation. Therefore, step S13 introduces dynamic control logic based on slope detection. Specifically, by comparing the relationship between the current power and the target power P0, the relationship between the current power and the previous power, and the relationship between the current driving frequency and the previous driving frequency, the processor can deduce whether the frequency modulation should be increased or decreased in the current working state.

[0028] As can be seen, step S13 calculates the correct adjustment direction based on the real-time power-drive frequency change trend. Even if the curve shifts due to temperature changes, the current drive frequency can still be accurately adjusted, effectively improving the device's anti-interference capability and stability.

[0029] S14. Adjust the driving frequency of the vibration control circuit according to the adjustment step and adjustment direction of the driving frequency until the difference between the current power of the ultrasonic atomizing plate and the target power is within the preset range.

[0030] Specifically, after the processor obtains the precise adjustment step and direction of the drive frequency, it changes the drive frequency of the output drive signal in real time by modifying or reloading the register values, and determines the operating power range of the ultrasonic atomizing plate as a preset range. Further, after adjusting the drive frequency of the vibration control circuit, if the difference between the current power and the target power P0 has not yet entered the preset range, the system will repeatedly execute steps S11 to S14, thus forming a real-time feedback closed-loop control loop, continuously adjusting the power towards the target power P0. If the difference between the current power and the target power P0 falls within the preset range, the system will pause frequency adjustment to prevent the power of the ultrasonic atomizing plate from fluctuating around the target power P0 and becoming unstable.

[0031] As can be seen, step S14, through continuous feedback closed-loop control adjustment, enables the power of the ultrasonic atomizing plate to be quickly and accurately adjusted to near the target power. At the same time, it solves the problem of power mismatch between the power output of the power supply system and the target power caused by temperature drift in traditional equipment, and significantly improves the stability of the ultrasonic atomizing system.

[0032] Through the aforementioned iterative steps S11 to S14, this invention integrates state acquisition, step size calculation, direction determination, and drive execution into a dynamic feedback closed loop, realizing real-time frequency sweeping and tracking functions for the ultrasonic atomization system during operation. In practical applications, whether it's a cold start or prolonged operation causing temperature drift, the system can adaptively and quickly adjust to the optimal power matching state, preventing battery damage due to continuous overload discharge while ensuring stable mist output, thus balancing the hardware lifespan of the device and the user's suction experience.

[0033] Based on the above embodiments, as an optional embodiment, obtaining the power of the ultrasonic atomizing plate at the current moment includes: Obtain the current voltage and current of the ultrasonic atomizing plate; The power of the ultrasonic atomizing plate at the current moment is determined based on the voltage and current at the current moment.

[0034] In this embodiment, since the equivalent impedance of the ultrasonic atomizing plate changes nonlinearly with the operating temperature during operation, it is necessary to acquire the current power of the ultrasonic atomizing plate by collecting its electrical signal at the current moment. Specifically, when the processor acquires the current power of the ultrasonic atomizing plate, it samples the voltage and current signals controlling the ultrasonic atomizing plate through the acquisition component. Then, the processor's internal algorithm multiplies the voltage signal value and the current signal value and performs filtering processing to directly calculate the true operating power of the ultrasonic atomizing plate at that sampling moment and uses it as the current power of the ultrasonic atomizing plate.

[0035] As can be seen, this embodiment overcomes the power estimation error caused by impedance changes during the operation of the ultrasonic atomizing plate by directly collecting the working voltage and current of the ultrasonic atomizing plate and eliminates noise interference. It can quickly and accurately obtain the power of the ultrasonic atomizing plate at the current moment, providing a data basis for subsequent driving frequency adjustment.

[0036] As an optional embodiment, determining the adjustment step size of the drive frequency based on the difference includes: Determine whether the difference value is within a preset range; If so, then the adjustment step of the drive frequency is set to zero; If not, the adjustment step of the driving frequency is determined based on the magnitude of the difference; wherein, the adjustment step of the driving frequency is positively correlated with the magnitude of the difference, and the adjustment step of the driving frequency and the difference are in a step-like manner.

[0037] In closed-loop control theory, a fixed adjustment step size often fails to balance the needs of rapid adjustment and prevention of over-adjustment. Therefore, this embodiment introduces a piecewise step-like nonlinear control strategy and sets a preset range. In this embodiment, the ultrasonic atomization system first determines whether the absolute value of the difference between the current power and the target power P0 falls within the preset range. If yes, it means that the power of the ultrasonic atomizing plate at the current moment is close to the target power P0, and the system directly determines that the adjustment step size of the driving frequency is zero, maintaining the current driving frequency unchanged; if not, the processor uses step-like positive correlation logic to calculate the adjustment step size of the driving frequency.

[0038] Specifically, as an optional implementation, for example, when the absolute value of the difference between the current power and the target power P0 is greater than or equal to 3W, the adjustment step of the driving frequency is set to 3kHz for large-step fast frequency tracking; when the absolute value of the difference is greater than or equal to 2W and less than 3W, the adjustment step of the driving frequency is set to 2kHz; when the absolute value of the difference is greater than or equal to 1W and less than 2W, the adjustment step of the driving frequency is set to 1kHz for fine-tuning; and when the absolute value of the difference is less than 1W, the system determines that the current power is near the target power P0, and directly sets the adjustment step of the driving frequency to 0, at which point no frequency adjustment is needed. Overall, the adjustment step of the driving frequency increases in a stepwise manner as the absolute value of the difference increases.

[0039] It should be noted that the specific power threshold and the corresponding adjustment step of the driving frequency mentioned in the above embodiments are only preferred examples. In practical applications, those skilled in the art can freely divide the difference range and the corresponding adjustment step of the driving frequency according to the characteristics of the selected ultrasonic atomizing plate and the specific control accuracy requirements. Such conventional parameter replacements or proportional scaling should all fall within the protection scope of this invention.

[0040] As can be seen, this embodiment adopts a segmented step adjustment method, which can automatically switch the step size of the drive frequency adjustment according to the magnitude of the deviation between the current power and the target power P0. It takes into account both the frequency modulation response speed and the fine adjustment accuracy, and solves the problem that the power of the ultrasonic atomizing plate may fluctuate around the target power P0.

[0041] As an optional embodiment, the adjustment step size of the drive frequency is positively linearly correlated with the magnitude of the difference.

[0042] Furthermore, as another implementation method alongside the aforementioned stepped calculation of the drive frequency adjustment step size, the system can also use a mathematical formula to linearly determine the step size. That is, the processor incorporates a preset proportional coefficient into the algorithm, constructing a basic proportional control loop. Specifically, after obtaining the difference between the current power and the target power P0, multiplying this difference by the proportional coefficient yields the current drive frequency adjustment step size. The larger the difference, the larger the step size obtained through the multiplication formula; as the difference gradually decreases and approaches 0, the calculated step size also decreases linearly.

[0043] As can be seen, this embodiment uses a linear proportional algorithm, where the adjustment step of the driving frequency is always set proportionally to the power deviation. This ensures that the transition of the ultrasonic atomizing plate during power tracking is extremely smooth, while taking into account both the response speed of frequency modulation and the stability of fine-tuning.

[0044] As an optional embodiment, the processor's clock source includes a dedicated clock source for generating PWM signals.

[0045] Specifically, the frequency of a PWM signal is typically determined by dividing the input clock frequency of the timer by the count value of the period register. In traditional processor chips, the clock source used to generate the PWM signal usually shares the same lower-frequency main system clock as the system operating reference. This results in a very large frequency adjustment step when outputting a high-frequency PWM wave. In this embodiment, by using a dedicated clock source for generating the PWM signal, a high-frequency reference clock is provided for the generation of the PWM signal, which can effectively improve the frequency modulation accuracy. For example, the adjustment step can be reduced from the original minimum frequency of tens of kilohertz to hundreds of kilohertz or even lower.

[0046] As can be seen, this embodiment greatly improves the driving frequency resolution of the driving signal by configuring a dedicated high-speed clock source for the PWM signal, ensuring that the power of the ultrasonic atomizing plate can be smoothly adjusted to near the target power, and avoiding power sudden changes or fluctuations caused by low frequency modulation accuracy.

[0047] As an optional embodiment, adjusting the driving frequency of the vibration control circuit according to the adjustment step size and adjustment direction of the driving frequency includes: The frequency of a single PWM drive signal is determined by the adjustment step and direction of the drive frequency, so that the signal processing module can generate two complementary PWM drive signals based on the single PWM drive signal and output them to the vibration control circuit.

[0048] In this embodiment, after the processor calculates the new driving frequency based on the adjustment step and direction of the driving frequency, it needs to input this driving frequency information into the vibration control circuit, and then use the new driving frequency to drive the ultrasonic atomizing plate to work. Specifically, the processor first outputs a single-channel PWM driving signal through its internal high-frequency clock source; then, this initial signal is processed by an independent signal processing module to generate two complementary PWM signals with the same frequency but alternating high and low levels; finally, these two complementary signals are applied to the vibration control circuit respectively, thereby driving the ultrasonic atomizing plate to work according to the set driving frequency.

[0049] As can be seen, this embodiment outputs two complementary signals through the signal processing module to drive the two poles of the ultrasonic atomizing plate, so that it does work throughout the entire cycle. Compared with doing work in half a cycle, this significantly improves the atomization efficiency and ensures a stable output of smoke.

[0050] As an optional embodiment, the adjustment direction of the driving frequency adjustment step Fs is determined based on the relationship between the current power and the target power, the relationship between the current power and the power at the previous time, and the relationship between the current driving frequency and the driving frequency at the previous time, including: Based on the relationship between the power at the current moment and the power at the previous moment, and the relationship between the driving frequency at the current moment and the driving frequency at the previous moment, determine the correlation between power and driving frequency under the current working state. When the power and drive frequency are positively correlated in the current working state, if the power at the current moment is less than the target power P0, then the adjustment direction of the drive frequency adjustment step Fs is determined to be the direction of increasing the drive frequency. If the power at the current moment is greater than the target power P0, then the adjustment direction of the driving frequency adjustment step Fs is determined to be the direction of decreasing the driving frequency. When the power and drive frequency are negatively correlated in the current working state, if the power at the current moment is less than the target power P0, then the adjustment direction of the drive frequency adjustment step Fs is determined to be the direction of decreasing drive frequency. If the current power is greater than the target power P0, then the adjustment direction of the driving frequency adjustment step Fs is determined to be the direction of increasing the driving frequency.

[0051] Specifically, such as Figure 2 As shown, it can be seen that in the physical characteristics of the ultrasonic atomizing plate, the curve of its power changing with the driving frequency is usually peak-shaped, that is, the power reaches its peak at the resonant frequency FC. In this embodiment, as... Figure 3 As shown, Figure 3The flowchart of another atomization control method provided by the present invention shows that when the adjustment step Fs of the driving frequency is determined to be non-zero and the driving frequency of the vibration control circuit needs to be adjusted, the processor first calculates the power change trend and the driving frequency change trend between the current moment and the previous moment to determine the curve position of the current operating point of the system: compared with the previous moment, if the power increases while the driving frequency increases or decreases while the driving frequency decreases, it is determined that the power and the driving frequency are positively correlated, indicating that the current operating point is located on the left slope of the mountain-shaped curve in the image. Figure 2 The curve is segment A or segment B; conversely, if the power decreases while the driving frequency increases or the power increases while the driving frequency decreases, it is determined that the power and driving frequency are negatively correlated, indicating that the current operating point is located on the right slope of the mountain-shaped curve in the image, such as... Figure 2 The C or D segment of the curve.

[0052] After determining whether the current correlation is positive or negative, the next step is to judge based on the direction of the deviation between the current power and the target power P0. For example, when the system is located on the left slope of the mountain-shaped curve in the image, that is, when the power is positively correlated with the driving frequency, if the current power is still less than the target power P0, for example... Figure 2 In segment A of the curve, the system adjusts towards the direction closer to the resonant frequency point FC, i.e., the direction of increasing driving frequency; if the power at the current moment is already greater than the target power P0, for example... Figure 2 In segment B of the curve, the adjustment moves away from the resonant frequency point FC, i.e., the driving frequency decreases. Similarly, when the system is located on the right slope of the mountain-shaped curve in the image, i.e., when the power and driving frequency are negatively correlated, the completely opposite adjustment logic is executed.

[0053] As can be seen, the judgment logic of "comparing the two states before and after" adopted in this embodiment gives the system a strong sense of direction. Even if the physical curve is deviated due to temperature drift under harsh working conditions, the system can still accurately deduce the correct closed-loop frequency modulation direction, which effectively enhances the stability and adaptability of the system.

[0054] To address the above problems, the present invention also provides an atomization control device, comprising: Memory, used to store computer programs; A processor is used to execute computer programs to implement the steps of the atomization control method described above.

[0055] Specifically, this embodiment provides a hardware carrier for executing the above-described atomization control method. In practical applications, the memory is used to store pre-written control program code. The processor reads and runs these programs after the device is powered on or receives a control signal, thereby completing the control actions of steps S11 to S14 described above.

[0056] As can be seen, this embodiment writes the atomization control method onto a physical hardware chip, providing a stable and reliable physical operating platform for the atomization control method, and also facilitating its standardized mass production and assembly as a core module.

[0057] For a description of the atomization control device provided by the present invention, please refer to the embodiments of the atomization control method described above, which will not be repeated here.

[0058] To address the above problems, the present invention also provides an atomization control system, such as... Figure 4 As shown, Figure 4 A structural diagram of an atomization control system provided by the present invention includes: Ultrasonic atomizing sheet 600; The acquisition component 100 is used to acquire the voltage and current of the ultrasonic atomizing plate 600; Suction switch 300, the output terminal of suction switch 300 is connected to the controlled terminal of processor 200; As described above, the processor 200 has its input terminal connected to the output terminal of the acquisition unit 100, and its output terminal connected to the input terminal of the signal processing module 400. The signal processing module 400 has its output terminal connected to the vibration control circuit 500. Vibration control circuit 500 is connected to ultrasonic atomizing plate 600.

[0059] Specifically, when the user inhales, the suction switch 300 is triggered. The suction switch 300 further controls the processor 200 to begin atomization control, that is, to execute the atomization control algorithm in steps S11 to S14. Based on the calculated target driving frequency, a single-channel PWM driving signal is output to the signal processing module 400. The signal processing module 400 converts this signal into complementary two-channel PWM driving signals, which then drive the ultrasonic atomizing plate 600 to vibrate and produce smoke through the vibration control circuit 500. At the same time, the acquisition component 100 acquires the voltage and current of the atomizing plate in real time and feeds these physical quantities back to the input terminal of the processor 200, thus forming a complete feedback control loop.

[0060] As a preferred embodiment, such as Figure 5 As shown, Figure 5This is a structural diagram of another atomization control system provided by the present invention. A drive module 700 can also be provided after the signal processing module 400, or the signal processing module 400 and the drive module 700 can be integrated into a signal processing module 400 with enhanced drive capability, used to convert lower-level complementary PWM signals to higher levels to meet the direct drive requirements of the vibration control circuit 500. It should be noted that the suction switch 300 is not limited to a traditional mechanical switch, but can also be a microphone (airflow sensor), a voice-activated switch, etc. Such equivalent replacements based on the same triggering principle should fall within the protection scope of this invention, and will not be elaborated further here.

[0061] As can be seen, this embodiment integrates state acquisition, step size calculation, direction determination and drive execution into a dynamic feedback closed loop by setting up various hardware modules and relying on their coordinated cooperation. This provides a low-latency and highly reliable hardware carrier for the ultrasonic atomization method, ensuring that the atomization control method can be accurately implemented and greatly improving the practicality of the entire atomization control method and atomization control system.

[0062] As an optional embodiment, it also includes: Battery 800, the output terminal of which is connected to the power supply terminals of acquisition component 100, suction switch 300, processor 200, signal processing module 400 and boost module 900 respectively; The boost module 900 has its output terminal connected to the power supply terminal of the vibration control circuit 500.

[0063] Specifically, such as Figure 6 As shown, Figure 6 This is a structural diagram of another atomization control system provided by the present invention. The battery 800, as the main power supply component of the entire atomization control system, directly provides a safe operating voltage to modules such as the acquisition component 100 and the processor 200. However, the ultrasonic atomizing plate 600 typically requires a higher driving voltage to generate high-frequency mechanical vibration, which the voltage of the battery 800 (e.g., 3.3V) may not directly meet. Therefore, in this embodiment, a boost module 900 is also provided in the power supply system of the atomization control system. The boost module 900 can boost the voltage received from the battery 800 and then send it to the vibration control circuit 500 to drive the ultrasonic atomizing plate 600.

[0064] Furthermore, as a preferred embodiment, the vibration control circuit 500 may contain a transistor. The complementary two PWM drive signals output by the signal processing module 400 are respectively connected to the control terminals of the corresponding transistors. By alternately controlling the conduction and cutoff of the corresponding transistors at high frequency, the high voltage input from the boost module 900 to the vibration control circuit 500 is modulated, thereby further driving the ultrasonic atomizing plate 600 to generate high-frequency mechanical vibration and smoke.

[0065] As can be seen, this embodiment solves the problem that the low voltage of a conventional battery may not be able to directly drive the ultrasonic atomizing plate by introducing a boost module 900. This design also ensures that even during daily use when the battery power decreases and the voltage drops, the boost module 900 can still provide a stable input voltage to the vibration control circuit 500, thereby maintaining a long-term stable mist output of the atomization control system.

[0066] It should be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0067] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An atomization control method characterized by, Applied to processors, including: The power of the ultrasonic atomizing plate at the current moment and the driving frequency of the vibration control circuit of the ultrasonic atomizing plate are obtained. The difference between the current power and the target power is determined, and the adjustment step of the driving frequency is determined based on the difference; the target power is set based on a power range that matches the safe power threshold of the power supply system of the vibration control circuit and the mist output requirement of the ultrasonic atomizing plate. Based on the relationship between the current power and the target power, the relationship between the current power and the power at the previous moment, and the relationship between the current driving frequency and the driving frequency at the previous moment, the adjustment direction of the driving frequency adjustment step is determined. The driving frequency of the vibration control circuit is adjusted according to the adjustment step and the adjustment direction until the difference between the current power of the ultrasonic atomizing plate and the target power is within a preset range.

2. The atomization control method of claim 1, wherein, Obtain the current power of the ultrasonic nebulizer, including: Obtain the voltage and current of the ultrasonic atomizing plate at the current moment; The power of the ultrasonic atomizing plate at the current moment is determined based on the voltage and current at the current moment.

3. The atomization control method of claim 1, wherein, Determining the adjustment step of the drive frequency based on the difference includes: Determine whether the value of the difference is within a preset range; If so, then the adjustment step of the driving frequency is determined to be zero; If not, the adjustment step of the driving frequency is determined based on the magnitude of the difference; wherein the adjustment step of the driving frequency is positively correlated with the magnitude of the difference, and the adjustment step of the driving frequency is in a step-like manner with the magnitude of the difference.

4. The atomization control method of claim 1, wherein, The adjustment step of the driving frequency is positively linearly correlated with the magnitude of the difference.

5. The atomization control method of claim 1, wherein, The processor's clock source includes a dedicated clock source for generating PWM signals.

6. The atomization control method of claim 5, wherein, Adjusting the drive frequency of the vibration control circuit according to the adjustment step size of the drive frequency and the adjustment direction includes: The frequency of a single PWM drive signal is determined based on the adjustment step of the drive frequency and the adjustment direction, so that the signal processing module generates two complementary PWM drive signals based on the single PWM drive signal and outputs them to the vibration control circuit.

7. The atomization control method according to any one of claims 1 to 6, characterized in that, Based on the relationship between the current power and the target power, the relationship between the current power and the power at the previous moment, and the relationship between the current driving frequency and the driving frequency at the previous moment, the adjustment direction of the driving frequency adjustment step is determined, including: Based on the relationship between the power at the current moment and the power at the previous moment, and the relationship between the driving frequency at the current moment and the driving frequency at the previous moment, the correlation between power and driving frequency in the current working state is determined. When the power and drive frequency are positively correlated in the current working state, if the power at the current moment is less than the target power, then the adjustment direction of the adjustment step of the drive frequency is determined to be the direction of increasing the drive frequency. If the power at the current moment is greater than the target power, then the adjustment direction of the adjustment step of the driving frequency is determined to be the direction of decreasing the driving frequency; When the power and drive frequency are negatively correlated in the current working state, if the power at the current moment is less than the target power, then the adjustment direction of the adjustment step of the drive frequency is determined to be the direction of decreasing the drive frequency. If the power at the current moment is greater than the target power, then the adjustment direction of the adjustment step of the driving frequency is determined to be the direction of increasing the driving frequency.

8. An atomization control device, characterized in that, include: Memory, used to store computer programs; A processor, configured to implement the steps of the atomization control method as described in any one of claims 1 to 7 when executing the computer program.

9. An atomization control system, characterized in that, include: Ultrasonic atomizing sheet; A data acquisition component is used to acquire the voltage and current of the ultrasonic atomizing plate; A suction switch, the output of which is connected to the controlled terminal of the processor; The processor as described in claim 8, wherein the input terminal of the processor is connected to the output terminal of the acquisition component, and the output terminal is connected to the input terminal of the signal processing module; The signal processing module, the output terminal of which is connected to the vibration control circuit; The vibration control circuit is connected to the ultrasonic atomizing plate.

10. The atomization control system as described in claim 9, characterized in that, Also includes: The battery, the output of which is connected to the power supply terminals of the acquisition component, the suction switch, the processor, the signal processing module, and the boost module, respectively. The boost module's output terminal is connected to the power supply terminal of the vibration control circuit.

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