CN117019501A - Software adjusting system for power of net type atomizer - Google Patents

Abstract

The invention belongs to the technical field of software regulation, in particular to a software regulation system for power of a net type atomizer, which comprises an atomization driving module, a frequency feedback module, a power control module and a power detection module; the invention designs a software regulating system for the power of a net type atomizer, which can solve the problem of poor power consistency among atomizers in the prior art, and can increase the multi-gear function by the way on the premise that the atomizing power of the atomizers can be controlled and the atomizing rate is determined by the atomizing power, so that compared with the conventional atomizer which uses a hardware circuit switching way to distinguish the atomizing rate gears, the method for regulating the atomizing power by software not only reduces the cost on hardware, but also improves the precision and the number of gears for regulating the gears.

Description

Software adjusting system for power of net type atomizer

Technical Field

The invention belongs to the technical field of software regulation, and particularly relates to a software regulation system for power of a net type atomizer.

Background

The power of the existing net type atomizer (hereinafter referred to as atomizer) is determined before leaving the factory, the power of the atomizer is determined by a driving circuit and an atomizing sheet process, but due to errors of components such as inductance, capacitance and resistance in the driving circuit and natural differences of internal resistances of the atomizing sheets caused by process reasons, the power of each machine is different when the atomizer is in batch, the conventional atomizer does not compensate the power difference, the power of the atomizer influences the atomizing rate and the battery service time, so that the actual performance and the nominal of the product are inconsistent, and the use experience is reduced; for factory production, the atomizer of mass production also can be because of the difference of power for the uniformity of product worsens, and when the power deviation is too big, the defective rate of product also can increase.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the invention designs a software regulating system for the power of the net type atomizer, which can overcome the problem of poor power consistency among atomizers in the prior art, and can increase the multi-gear function by the atomizer on the premise that the atomizing power of the atomizer can be controlled and the atomizing rate is determined, compared with the conventional atomizer which uses a hardware circuit switching mode to distinguish the atomizing rate gears, the method for regulating the atomizing power by software not only reduces the cost on hardware, but also improves the precision of gear regulation and the number of gears.

The aim of the invention can be achieved by the following technical scheme:

a software regulation system for power of a mesh nebulizer, comprising:

atomization driving module: the module is responsible for generating waveforms for driving the atomizing sheet, and consists of two groups of MOS (metal oxide semiconductor) tubes, a resistor-capacitor and a booster circuit, wherein the MCU firstly generates two complementary square waves with specific frequency, and the square waves pass through the MOS tubes and are amplified by the booster circuit and finally converted into driving waveforms which accord with the driving standard of the atomizing sheet;

and a frequency feedback module: the module is responsible for determining the mechanical resonance frequency of the atomizer in a feedback mode, and generating resonance waveforms to drive an atomization sheet through the atomization driving module after finding the resonance frequency, and mainly comprises a sampling resistor and a filtering resistor-capacitor;

and a power control module: the module is responsible for adjusting and controlling the atomization power by changing the driving waveform of the atomization sheet, is mainly controlled by the software of the MCU, and can shorten or prolong the on-off time of the MOS tube by adjusting the shape of the driving waveform through the software and changing the duty ratio and dead zone of the waveform under the condition of not changing the driving frequency, thereby achieving the aim of improving or reducing the atomization power on the premise of not influencing the resonance of the atomizer;

and a power detection module: the module is responsible for determining the current atomization power in a feedback mode, the power detection depends on a current sampling circuit in the frequency detection module, and the current sampling circuit is matched with corresponding software for calculation, so that no additional components are formed.

As a further scheme of the invention: the atomizing driving module is responsible for generating waveforms for driving the atomizing sheets, the module consists of two groups of MOS (metal oxide semiconductor) tubes, a resistor-capacitor and a booster circuit, the MCU firstly generates two complementary square waves with specific frequency, the square waves are amplified by the MOS tubes and the booster circuit, and the specific process of finally converting the square waves into driving waveforms meeting the driving standard of the atomizing sheets is as follows: generating basic square waves, generating two square waves with specific frequency and complementation by the MCU, generating a series of high-low level signals by using a PWM algorithm, and controlling the frequency and the duty ratio by the MCU;

square wave driving, wherein the generated square wave is driven by an MOS tube, the MOS tube is used as a switch, when the square wave is at a high level, the MOS tube is turned on, otherwise, the MOS tube is turned off;

square wave boosting, namely square wave driven by an MOS tube is amplified by a boosting circuit, the boosting circuit can be realized by a Boost Converter, and the algorithm uses an energy storage element and a switching device to Boost voltage;

the waveform is converted into square waves amplified by the booster circuit and finally converted into driving waveforms conforming to the driving standard of the atomizer, and the conversion process can be realized by a filter to filter out high-frequency components, so that the square waves are smoother and more conform to the driving standard of the atomizer;

and outputting a driving waveform, and sending the generated driving waveform to the atomizer to drive the atomizer to work.

As a further scheme of the invention: the frequency feedback module determines the mechanical resonance frequency of the atomizer, and after the resonance frequency is found, the specific process of driving the atomizing sheet by generating a resonance waveform through the atomizing driving module is as follows:

the current signal is sampled, a sampling resistor is connected in parallel in the driving circuit to obtain the current signal, voltage drop is generated when the current passes through the sampling resistor, the current can be obtained by measuring the voltage drop, the process can be carried out by using an ADC (analog to digital converter), and the ADC can convert the analog signal into a digital signal for processing by the MCU;

the signal filtering is carried out, and the sampled current signal contains noise, so that the filtering processing is needed, and the filtering is carried out through a digital filtering algorithm;

frequency analysis, wherein the filtered current signal needs to be subjected to frequency analysis, the step can be realized by Automatic Frequency Tuning (AFT), and the AFT finds the frequency with the maximum current by changing the driving frequency and monitoring the driving current;

after AFT is carried out, the frequency with the maximum current is found out, and then the resonant frequency of the atomizer can be determined;

and generating a resonance waveform, inputting the determined resonance frequency to the atomization driving module, and generating a driving waveform with a corresponding frequency to drive the atomization sheet to work.

As a further scheme of the invention: the power control module is responsible for adjusting and controlling the specific process of atomizing power by changing the driving waveform of the atomizing sheet as follows:

setting target power, and setting a target power according to the requirement of a system;

detecting the current power, and calculating the current power through measurement of current and voltage (p=ui);

comparing the current power with the target power, and judging whether the power needs to be regulated or not; adjusting the driving waveform, if the current power is smaller than the target power, increasing the duty ratio of the driving waveform or reducing the dead zone to increase the on-off time of the MOS tube, and if the current power is larger than the target power, reducing the duty ratio of the driving waveform or increasing the dead zone to reduce the on-off time of the MOS tube, wherein the step can be realized through a PWM algorithm and the adjustment of the duty ratio of the PWM waveform;

and feedback regulation, in order to enable the system to quickly and accurately reach the target power, PID control is used, and the PID controller dynamically regulates the duty ratio of PWM according to the magnitude, accumulation and change rate of deviation by calculating the difference value between the target power and the current power, so that the power of the system can be quickly stabilized at the target power.

The power detection module determines the current atomization power in a feedback mode, the power detection depends on a current sampling circuit in the frequency detection module, and the specific process of matching with corresponding software is as follows:

the current signal sampling, which is also needed to collect the current signal, can be realized by connecting a sampling resistor in parallel in a circuit and measuring the voltage drop across the resistor, and the process can be completed by using an ADC (analog to digital) to convert the analog current signal into a digital signal for MCU (micro control unit) analysis;

the voltage signal is sampled, and meanwhile, the voltage of the atomizing sheet needs to be sampled, which can be realized by measuring the voltage at two ends of the atomizing sheet, and the process also needs to use an ADC for analog-to-digital conversion;

the signal filtering, the sampling signal of the current and the voltage may contain some noise, so the filtering process is needed, and the filtering process can be completed by using a digital filter;

calculating power, namely calculating the current power by using the sampled current and voltage signals according to a power formula P=UI, wherein the process can be realized in an MCU through a software algorithm;

and feeding back the calculated current power value to a power control module for power adjustment.

As a further scheme of the invention: a software regulation system for power of a mesh nebulizer, comprising the steps of:

step A1: the atomization driving module is responsible for generating waveforms for driving the atomizer;

step A2: the MCU firstly generates two complementary square waves with specific frequency, and the square waves are amplified and shape-adjusted by the MOS tube and the booster circuit and converted into waveforms suitable for driving the atomizing sheet;

step A3: the frequency feedback module is responsible for determining the mechanical resonance frequency of the atomizer in a feedback mode;

step A4: generating a driving waveform with initial frequency through an atomization driving module, and driving the atomizer to atomize;

step A5: collecting current atomization current signals through a sampling resistor, filtering the current atomization current signals, entering an MCU (micro control unit) for analysis, testing driving waveforms with different frequencies by the MCU, collecting and analyzing feedback current signals of each driving waveform, screening out current signals conforming to a resonance state, and determining the corresponding driving frequency as the resonance frequency;

step A6: the power control module is responsible for adjusting the atomization power by changing the driving waveform of the atomization sheet;

step A7: the module can change the duty ratio and dead time of the driving waveform under the condition of not changing the driving frequency, so as to change the on-off time of the MOS tube, and achieve the purpose of improving or reducing the atomization power under the premise of not influencing the resonance of the atomizer; step A8: the power detection module is responsible for determining the current atomization power in a feedback mode, the power detection depends on a current sampling circuit in the frequency detection module, and when the frequency tracking of the atomizer is finished, current signals of the current atomization are collected and enter the MCU after resistance-capacitance filtering;

step A9: then, according to a P=UI formula, knowing the current and the voltage, the current power can be calculated;

step A10: comparing the obtained current atomization power with a set value, and if the current atomization power is lower than a set value threshold value, increasing the driving power through a power control module;

step A11: if the driving power is higher than the set value threshold, the driving power is reduced through the power control module;

step A12: different power setting values can be defined for the atomizer, and different speed gears are corresponding; when the user switches gear, the current power set value is changed, and the process returns to step 3, and the detection and control of the power are restarted.

The beneficial effects obtained by the invention by adopting the structure are as follows: the invention provides a software regulating system for power of a net type atomizer, which realizes the following beneficial effects:

compared with a conventional atomizer, the invention has the advantages that the power detection and adjustment link is added, the link depends on software algorithm and program calculation control, and the additional cost is not added; for mass production atomizers, the method can ensure the consistency of power among machines, thereby ensuring the consistency of the atomization rate among the machines and the durability of batteries and improving the stability and quality of products. For a single atomizer, the method realizes the multi-gear adjusting function of the atomizing rate, and the adjusting precision, the number of adjusting gears, the speed step length and the cost of the method are all superior to those of the conventional atomizer product which achieves the aim of multi-gear adjustment by switching a hardware circuit because of the dependence on software.

Drawings

The invention will be further described with reference to the accompanying drawings

Fig. 1 is a schematic block diagram of a software regulation system for power of a mesh atomizer according to the present invention.

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.

Detailed Description

The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1:

referring to fig. 1, the present embodiment is a software adjusting system for power of a mesh atomizer, including an atomization driving module, a frequency feedback module, a power control module, and a power detection module;

the atomizing driving module is responsible for generating waveforms for driving the atomizing sheet, the module consists of two groups of MOS (metal oxide semiconductor) tubes, a resistor-capacitor and a booster circuit, the MCU firstly generates two complementary square waves with specific frequency, and the square waves pass through the MOS tubes and are amplified by the booster circuit and finally converted into driving waveforms which accord with the driving standard of the atomizing sheet;

the frequency feedback module is responsible for determining the mechanical resonance frequency of the atomizer in a feedback mode, and after the resonance frequency is found, the atomizing driving module generates resonance waveforms to drive the atomizing sheet, and the atomizing sheet mainly comprises a sampling resistor and a filter resistor-capacitor;

the power control module is responsible for adjusting and controlling atomization power by changing the driving waveform of the atomization sheet, the module is mainly controlled by software of the MCU, the shape of the driving waveform is adjusted by the software, and the duty ratio and dead zone of the waveform are changed under the condition of not changing the driving frequency, so that the on-off time of the MOS tube is shortened or prolonged, and the purpose of improving or reducing the atomization power on the premise of not influencing the resonance of the atomizer can be achieved;

wherein, the power detection module: the module is responsible for determining the current atomization power in a feedback mode, the power detection depends on a current sampling circuit in the frequency detection module, and the current sampling circuit is matched with corresponding software for calculation, so that no additional components are formed.

Example 2:

referring to fig. 1, the present embodiment is a software adjusting system for power of a mesh atomizer, comprising the following steps:

step A1: the atomization driving module is responsible for generating waveforms for driving the atomizer;

step A2: the MCU firstly generates two complementary square waves with specific frequency, and the square waves are amplified and shape-adjusted by the MOS tube and the booster circuit and converted into waveforms suitable for driving the atomizing sheet;

step A3: the frequency feedback module is responsible for determining the mechanical resonance frequency of the atomizer in a feedback mode;

step A4: generating a driving waveform with initial frequency through an atomization driving module, and driving the atomizer to atomize;

step A5: collecting current atomization current signals through a sampling resistor, filtering the current atomization current signals, entering an MCU (micro control unit) for analysis, testing driving waveforms with different frequencies by the MCU, collecting and analyzing feedback current signals of each driving waveform, screening out current signals conforming to a resonance state, and determining the corresponding driving frequency as the resonance frequency;

step A6: the power control module is responsible for adjusting the atomization power by changing the driving waveform of the atomization sheet;

step A7: the module can change the duty ratio and dead time of the driving waveform under the condition of not changing the driving frequency, so as to change the on-off time of the MOS tube, and achieve the purpose of improving or reducing the atomization power under the premise of not influencing the resonance of the atomizer; step A8: the power detection module is responsible for determining the current atomization power in a feedback mode, the power detection depends on a current sampling circuit in the frequency detection module, and when the frequency tracking of the atomizer is finished, current signals of the current atomization are collected and enter the MCU after resistance-capacitance filtering;

step A9: then, according to a P=UI formula, knowing the current and the voltage, the current power can be calculated;

step A10: comparing the obtained current atomization power with a set value, and if the current atomization power is lower than a set value threshold value, increasing the driving power through a power control module;

step A11: if the driving power is higher than the set value threshold, the driving power is reduced through the power control module;

step A12: different power setting values can be defined for the atomizer, and different speed gears are corresponding; when the user switches gear, the current power set value is changed, and the process returns to step 3, and the detection and control of the power are restarted.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely illustrative and explanatory of the invention, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.

Claims (6)

1. A software regulation system for power of a mesh nebulizer, comprising:

atomization driving module: the module is responsible for generating waveforms for driving the atomizing sheet, and consists of two groups of MOS (metal oxide semiconductor) tubes, a resistor-capacitor and a booster circuit, wherein the MCU firstly generates two complementary square waves with specific frequency, and the square waves pass through the MOS tubes and are amplified by the booster circuit and finally converted into driving waveforms which accord with the driving standard of the atomizing sheet;

and a frequency feedback module: the module is responsible for determining the mechanical resonance frequency of the atomizer in a feedback mode, and generating resonance waveforms to drive an atomization sheet through the atomization driving module after finding the resonance frequency, and mainly comprises a sampling resistor and a filtering resistor-capacitor;

and a power control module: the module is responsible for adjusting and controlling the atomization power by changing the driving waveform of the atomization sheet, is mainly controlled by the software of the MCU, and can shorten or prolong the on-off time of the MOS tube by adjusting the shape of the driving waveform through the software and changing the duty ratio and dead zone of the waveform under the condition of not changing the driving frequency, thereby achieving the aim of improving or reducing the atomization power on the premise of not influencing the resonance of the atomizer;

and a power detection module: the module is responsible for determining the current atomization power in a feedback mode, the power detection depends on a current sampling circuit in the frequency detection module, and the current sampling circuit is matched with corresponding software for calculation, so that no additional components are formed.

2. The software adjusting system of the power of the mesh atomizer according to claim 1, wherein the atomizing driving module is responsible for generating waveforms for driving the atomizing sheet, the module is composed of two groups of MOS tubes, a resistor-capacitor and a booster circuit, the MCU firstly generates two complementary square waves with specific frequency, the square waves pass through the MOS tubes and are amplified by the booster circuit, and the specific process of finally converting the square waves into driving waveforms meeting the driving standard of the atomizing sheet is as follows: generating basic square waves, generating two square waves with specific frequency and complementation by the MCU, generating a series of high-low level signals by using a PWM algorithm, and controlling the frequency and the duty ratio by the MCU;

square wave driving, wherein the generated square wave is driven by an MOS tube, the MOS tube is used as a switch, when the square wave is at a high level, the MOS tube is turned on, otherwise, the MOS tube is turned off;

square wave boosting, namely square wave driven by an MOS tube is amplified by a boosting circuit, the boosting circuit can be realized by a Boost Converter, and the algorithm uses an energy storage element and a switching device to Boost voltage; the waveform is converted into square waves amplified by the booster circuit and finally converted into driving waveforms conforming to the driving standard of the atomizer, and the conversion process can be realized by a filter to filter out high-frequency components, so that the square waves are smoother and more conform to the driving standard of the atomizer;

and outputting a driving waveform, and sending the generated driving waveform to the atomizer to drive the atomizer to work.

3. The software adjusting system of power of a mesh atomizer according to claim 2, wherein the frequency feedback module determines a mechanical resonance frequency of the atomizer, and the specific process of generating a resonance waveform to drive the atomizing sheet by the atomizing driving module after finding the resonance frequency is as follows:

the current signal is sampled, a sampling resistor is connected in parallel in the driving circuit to obtain the current signal, voltage drop is generated when the current passes through the sampling resistor, the current can be obtained by measuring the voltage drop, the process can be carried out by using an ADC (analog to digital converter), and the ADC can convert the analog signal into a digital signal for processing by the MCU;

the signal filtering is carried out, and the sampled current signal contains noise, so that the filtering processing is needed, and the filtering is carried out through a digital filtering algorithm;

frequency analysis, wherein the filtered current signal needs to be subjected to frequency analysis, the step can be realized by Automatic Frequency Tuning (AFT), and the AFT finds the frequency with the maximum current by changing the driving frequency and monitoring the driving current;

after AFT is carried out, the frequency with the maximum current is found out, and then the resonant frequency of the atomizer can be determined;

and generating a resonance waveform, inputting the determined resonance frequency to the atomization driving module, and generating a driving waveform with a corresponding frequency to drive the atomization sheet to work.

4. A software regulation system for power of a mesh atomizer according to claim 2, wherein the power control module is responsible for regulating and controlling the atomizing power by changing the driving waveform of the atomizing sheet as follows:

setting target power, and setting a target power according to the requirement of a system;

detecting the current power, and calculating the current power through measurement of current and voltage (p=ui);

comparing the current power with the target power, and judging whether the power needs to be regulated or not;

adjusting the driving waveform, if the current power is smaller than the target power, increasing the duty ratio of the driving waveform or reducing the dead zone to increase the on-off time of the MOS tube, and if the current power is larger than the target power, reducing the duty ratio of the driving waveform or increasing the dead zone to reduce the on-off time of the MOS tube, wherein the step can be realized through a PWM algorithm and the adjustment of the duty ratio of the PWM waveform;

and feedback regulation, in order to enable the system to quickly and accurately reach the target power, PID control is used, and the PID controller dynamically regulates the duty ratio of PWM according to the magnitude, accumulation and change rate of deviation by calculating the difference value between the target power and the current power, so that the power of the system can be quickly stabilized at the target power.

5. The software adjusting system of the power of the network atomizer according to claim 2, wherein the power detection module determines the current atomizing power by means of feedback, the power detection depends on a current sampling circuit in the frequency detection module, and the specific process of calculating with corresponding software is as follows:

the current signal sampling, which is also needed to collect the current signal, can be realized by connecting a sampling resistor in parallel in a circuit and measuring the voltage drop across the resistor, and the process can be completed by using an ADC (analog to digital) to convert the analog current signal into a digital signal for MCU (micro control unit) analysis;

the voltage signal is sampled, and meanwhile, the voltage of the atomizing sheet needs to be sampled, which can be realized by measuring the voltage at two ends of the atomizing sheet, and the process also needs to use an ADC for analog-to-digital conversion; the signal filtering, the sampling signal of the current and the voltage may contain some noise, so the filtering process is needed, and the filtering process can be completed by using a digital filter;

calculating power, namely calculating the current power by using the sampled current and voltage signals according to a power formula P=UI, wherein the process can be realized in an MCU through a software algorithm;

and feeding back the calculated current power value to a power control module for power adjustment.

6. A software regulation system for power of a mesh nebulizer as claimed in claim 3, comprising the steps of:

step A1: the atomization driving module is responsible for generating waveforms for driving the atomizer;

step A2: the MCU firstly generates two complementary square waves with specific frequency, and the square waves are amplified and shape-adjusted by the MOS tube and the booster circuit and converted into waveforms suitable for driving the atomizing sheet;

step A3: the frequency feedback module is responsible for determining the mechanical resonance frequency of the atomizer in a feedback mode;

step A4: generating a driving waveform with initial frequency through an atomization driving module, and driving the atomizer to atomize;

step A5: collecting current atomization current signals through a sampling resistor, filtering the current atomization current signals, entering an MCU (micro control unit) for analysis, testing driving waveforms with different frequencies by the MCU, collecting and analyzing feedback current signals of each driving waveform, screening out current signals conforming to a resonance state, and determining the corresponding driving frequency as the resonance frequency;

step A6: the power control module is responsible for adjusting the atomization power by changing the driving waveform of the atomization sheet;

step A7: the module can change the duty ratio and dead time of the driving waveform under the condition of not changing the driving frequency, so as to change the on-off time of the MOS tube, and achieve the purpose of improving or reducing the atomization power under the premise of not influencing the resonance of the atomizer;

step A8: the power detection module is responsible for determining the current atomization power in a feedback mode, the power detection depends on a current sampling circuit in the frequency detection module, and when the frequency tracking of the atomizer is finished, current signals of the current atomization are collected and enter the MCU after resistance-capacitance filtering;

step A9: then, according to a P=UI formula, knowing the current and the voltage, the current power can be calculated;

step A10: comparing the obtained current atomization power with a set value, and if the current atomization power is lower than a set value threshold value, increasing the driving power through a power control module;

step A11: if the driving power is higher than the set value threshold, the driving power is reduced through the power control module;

step A12: different power setting values can be defined for the atomizer, and different speed gears are corresponding; when the user switches gear, the current power set value is changed, and the process returns to step 3, and the detection and control of the power are restarted.