Atomization control system and method for atomization device and atomization heating structure

Abstract

The invention provides an atomization control system and method for an atomization device and an atomization heating structure, and belongs to the technical field of medical instruments. The atomization control system comprises a temperature detection module, a power management circuit module, a driving circuit module, a main control module, an atomization sheet and a power supply module electrically connected with the power management circuit module. Wherein the temperature detection module is electrically connected with the main control module and is used for collecting the atomization working temperature of the atomization device and sending the atomization working temperature to the main control module; the main control module is used for judging whether the obtained atomization working temperature is within a preset atomization compensation temperature threshold value interval or not, and when the preset atomization compensation temperature threshold value interval is a low-temperature compensation temperature threshold value interval, the atomization working temperature is controlled to be the low-temperature compensation temperature threshold value interval; atomization compensation is carried out in one of the following control modes: driving a DCDC voltage configuration module electrically connected with a main control module to increase the driving voltage of an atomization sheet; and the atomization sheet heating module electrically connected with the main control module is driven to work.

Description

Technical Field

[0001] The present application relates to the field of medical device technology, and in particular to an atomization control system, method and atomization heating structure for an atomization device. Background Art

[0002] With the continuous leap forward in medical technology, the demand in the field of respiratory therapy and drug delivery is increasing, which directly promotes the innovation and development of nebulization technology. The mesh nebulizer, with its efficient atomization performance and precise particle size control ability, stands out among many nebulization devices and has become the focus of market attention. The great progress of ultrasonic technology has made it possible to design and manufacture miniaturized and high-performance nebulizers, especially in medical facilities and home environments, where mesh nebulizers have shown broad application prospects. Compared with traditional nebulizers, mesh nebulizers perform better in terms of ease of operation and noise control, and are perfectly adapted to a variety of usage scenarios such as homes and hospitals, significantly improving the overall user experience. In addition, the multi-liquid applicability of mesh nebulizers - including drugs, essential oils, etc., has further broadened its market demand and met the diverse needs of different users.

[0003] However, behind the widespread use of mesh atomizers, a key problem has gradually emerged: its core component, the atomizer, especially its piezoelectric ceramic part, is extremely sensitive to changes in ambient temperature. This sensitivity not only limits the use environment of the mesh atomizer, requiring users to strictly control the ambient temperature when using it to ensure the best atomization effect, thereby increasing the complexity and inconvenience of use; more importantly, piezoelectric ceramics cannot flexibly adjust the atomization rate according to changes in ambient temperature, resulting in large fluctuations in the atomization rate and difficulty in achieving precise control. This not only affects the consistency of the atomization effect, but also has a negative impact on the user experience.

[0004] Based on this, there is an urgent need for an atomization control technology solution that can overcome the influence of ambient temperature and ensure the atomization effect of the atomization sheet. Summary of the invention

[0005] The embodiments of the present application provide an atomization control system, method and atomization heating structure for an atomization device, which are used to solve the technical problem that the current atomization device has poor adaptability to changes in ambient temperature, cannot stably control the atomization rate, and brings a poor atomization experience to users.

[0006] On the one hand, an embodiment of the present application provides an atomization control system for an atomization device, the system comprising: a temperature detection module, a power management circuit module, a drive circuit module, a main control module, an atomization sheet, and a power supply module electrically connected to the power management circuit module;

[0007] The temperature detection module is electrically connected to the main control module, and is used to collect the atomization working temperature of the atomization device and send it to the main control module;

[0008] The power management circuit module is used to adjust the voltage of the power supply module to the required working voltage of the atomization device;

[0009] The driving circuit module is respectively connected to the power management circuit module, the main control module and the atomizing sheet, and is used to drive the atomizing sheet to vibrate based on the duty cycle of the high-frequency signal of the main control module;

[0010] The main control module is used to determine whether the obtained atomization working temperature is within a preset atomization compensation temperature threshold interval, and when the preset atomization compensation temperature threshold interval is a low temperature compensation temperature threshold interval, perform atomization compensation by one of the following control methods:

[0011] Driving the DCDC voltage configuration module electrically connected to the main control module to increase the atomizer sheet driving voltage;

[0012] The atomizing sheet heating module electrically connected to the main control module is driven to work.

[0013] In one implementation of the present application, the DCDC voltage configuration module includes a parallel resistor for increasing the atomizer sheet driving voltage, and is used to connect the parallel resistor to the DCDC voltage divider circuit of the power management circuit module according to the boost drive signal of the main control module to change the voltage divider ratio of the DCDC voltage divider circuit and increase the atomizer sheet driving voltage.

[0014] In one implementation of the present application, a first end of the parallel resistor is connected to the main control module, and a second end is connected to a DCDC voltage divider circuit of the power management circuit module and is connected in parallel with a pull-down resistor.

[0015] In one implementation of the present application, the atomizer sheet heating module at least includes a PI heating film applied to the ceramic surface of the atomizer sheet, which is used to conduct the connection between the power supply module and the PI heating film through the heating drive signal of the main control module when driving the atomizer sheet heating module electrically connected to the main control module to heat the ceramic surface of the atomizer sheet to increase the working temperature of the atomizer sheet.

[0016] In one implementation of the present application, the atomizer heating module includes a base resistor, an NPN transistor, a pull-up resistor, a PMOS tube and the PI heating film;

[0017] One end of the base resistor is electrically connected to the main control module, and the other end is electrically connected to the base of the NPN transistor;

[0018] The collector of the NPN transistor is electrically connected to one end of the pull-up resistor and the gate of the PMOS tube, and the emitter of the NPN transistor is electrically connected to the negative electrode of the PI heating film and is grounded;

[0019] The other end of the pull-up resistor is connected to the source of the NPN transistor and the power supply module respectively;

[0020] The drain of the PMOS tube is electrically connected to the positive electrode of the PI heating film.

[0021] In one implementation of the present application, the atomizer sheet heating module is electrically connected to two ends of the atomizer sheet stainless steel, and is used to conduct the connection between the power supply module and the two ends of the atomizer sheet stainless steel through the heating drive signal of the main control module when driving the atomizer sheet heating module electrically connected to the main control module to work, so that the atomizer sheet stainless steel generates heat to increase the working temperature of the atomizer sheet.

[0022] In one implementation of the present application, the atomizer heating module includes a base resistor, an NPN transistor, a pull-up resistor and a PMOS tube;

[0023] One end of the base resistor is electrically connected to the main control module, and the other end is electrically connected to the base of the NPN transistor;

[0024] The collector of the NPN transistor is electrically connected to one end of the pull-up resistor and the gate of the PMOS tube respectively, and the emitter of the NPN transistor is electrically connected to the first end of the stainless steel of the atomizer sheet and is grounded;

[0025] The other end of the pull-up resistor is connected to the source of the NPN transistor and the power supply module respectively;

[0026] The drain of the PMOS tube is electrically connected to the second end of the atomizing stainless steel sheet; wherein the first end and the second end are symmetrically arranged on both sides of the atomizing stainless steel sheet.

[0027] In one implementation of the present application, the heating drive signal is an AC drive signal obtained by the main control module based on a PID algorithm.

[0028] In one implementation of the present application, the main control module is further used to:

[0029] When it is determined that the atomization operating temperature is not within the preset atomization compensation temperature threshold range, no atomization compensation operation is performed;

[0030] When it is determined that the acquired atomization working temperature is in a preset high-temperature compensation temperature threshold interval, the duty cycle of the compensated high-frequency signal corresponding to the high-temperature compensation temperature threshold interval is determined, so that the driving circuit module generates a corresponding atomization sheet driving signal according to the compensated high-frequency signal duty cycle to drive the atomization sheet to vibrate.

[0031] On the other hand, an embodiment of the present application further provides an atomization control method for an atomization device, the method comprising:

[0032] Obtain the atomization working temperature of the atomization device in real time;

[0033] Determine whether the atomization working temperature is in a preset atomization compensation temperature threshold interval, and when the preset atomization compensation temperature threshold interval is a low temperature compensation temperature threshold interval, perform atomization compensation by one of the following control methods:

[0034] Drive the DCDC voltage configuration module to increase the atomizer drive voltage;

[0035] Drive the atomizer heating module to work.

[0036] In one implementation of the present application, the method further includes:

[0037] When it is determined that the atomization operating temperature is not within the preset atomization compensation temperature threshold range, no atomization compensation operation is performed;

[0038] When it is determined that the acquired atomization working temperature is in a preset high-temperature compensation temperature threshold interval, the duty cycle of the compensated high-frequency signal corresponding to the high-temperature compensation temperature threshold interval is determined, so that the driving circuit module generates a corresponding atomization sheet driving signal according to the compensated high-frequency signal duty cycle to drive the atomization sheet to vibrate.

[0039] On the other hand, the embodiment of the present application further provides an atomization heating structure, which performs heating based on the control of the atomization control method for an atomization device described above; the atomization heating structure includes a PI heating film and a fixing member attached to the ceramic surface of the atomization sheet;

[0040] The PI heating film is attached to the annular area of ​​the ceramic surface of the atomizer sheet through the fixing member, and the shape of the PI heating film matches the shape of the annular area formed by the ceramic surface of the atomizer sheet.

[0041] In one implementation of the present application, the fixing member is a silicone ring, and the shape of the silicone ring matches the shape of the annular area formed by the ceramic surface of the atomizer plate.

[0042] In one implementation of the present application, the atomization heating structure is heated based on the atomization working temperature collected by a temperature detection module; the temperature detection module includes one or more of the following: an NTC thermistor attached to the atomization sheet, and a temperature sensor arranged on a circuit board of the atomization device.

[0043] Compared with the prior art, the present invention has the following significant effects:

[0044] Through the above technical solution, the present application can detect the working temperature of the atomizer in real time, and can automatically trigger the compensation mechanism to ensure that the atomization process can be carried out within the optimal temperature range, thereby improving the atomization efficiency and stability. At the same time, the present application improves two compensation methods, one is to increase the atomizer plate driving voltage, and the other is to start the atomizer plate heating module. The two compensation methods complement each other and can select the optimal method for atomization compensation according to actual conditions. Furthermore, by integrating the temperature detection module, the intelligent judgment and compensation mechanism, and the flexible voltage regulation strategy, the adaptability of the atomizer device to changes in ambient temperature is significantly improved, the stable control of the atomization rate is achieved, and a more high-quality and stable atomization experience is brought to users. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0046] Figure 1 This is a schematic diagram of the structure of an atomization control system for an atomization device in an embodiment of the present application;

[0047] Figure 2 A circuit schematic diagram of an atomization device used in an atomization control system of an atomization device in an embodiment of the present application;

[0048] Figure 3 This is a circuit schematic diagram of an atomizer plate heating module of an atomizer control system used in an atomizer device in an embodiment of the present application;

[0049] Figure 4 A schematic flow chart of an atomization control method for an atomization device in an embodiment of the present application;

[0050] Figure 5 This is a schematic diagram of the structure of an atomization heating structure in an embodiment of the present application;

[0051] Figure 6 A schematic diagram of atomization rate test at different temperatures without temperature compensation in an embodiment of the present application;

[0052] Figure 7Another schematic diagram of the atomization rate test at different temperatures without temperature compensation in the embodiment of the present application;

[0053] Figure 8 This is another schematic diagram of the atomization rate test at different temperatures without temperature compensation in the embodiment of the present application;

[0054] Fig. 9 A schematic diagram of the test data of atomization rate at different temperatures after improvement in the embodiment of the present application;

[0055] Fig.10 Another schematic diagram of the test of atomization rate data at different temperatures after improvement in the embodiment of the present application;

[0056] Fig.11 This is another schematic diagram of the data test of atomization rate at different temperatures after improvement in the embodiment of the present application;

[0057] Fig.12 This is an exploded view of the cup head of the atomizer device in the embodiment of the present application;

[0058] Fig.13 This is a schematic diagram of the bottom contact of the atomizer cup of the atomizer device in the embodiment of the present application;

[0059] Fig.14 This is a schematic diagram of the PCBA electric shock at the bottom of the atomizer cup of the atomizer device in the embodiment of the present application. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0061] Under different temperature conditions, temperature change is a very important factor affecting the positioning accuracy of piezoelectric ceramics. The performance of piezoelectric ceramics will change significantly with the change of temperature. For example, the lower the temperature, the lower the performance of piezoelectric ceramics will be, and the conversion efficiency will be lower; when the temperature rises, although the ceramic performance will be improved, the drug solution will lose its efficacy due to the influence of high temperature.

[0062] Based on this, the embodiments of the present application provide an atomization control system, method and atomization heating structure for an atomization device, which are used to solve the technical problems that the current atomization device has poor adaptability to changes in ambient temperature, cannot stably control the atomization rate, and brings a poor atomization experience to users.

[0063] The following describes in detail various embodiments of the present application in conjunction with the accompanying drawings.

[0064] The present application embodiment provides an atomization control system for an atomization device, such as Figure 1 As shown, the atomization control system 100 for the atomization device includes: a temperature detection module 101, a power management circuit module 102, a drive circuit module 103, a main control module 104, an atomization sheet 105, and a power supply module 106 electrically connected to the power management circuit module 102.

[0065] The temperature detection module 101 is electrically connected to the main control module 104, and is used to collect the atomization operating temperature of the atomization device and send it to the main control module 104. The power management circuit module 102 is used to adjust the voltage of the power supply module 106 to the required operating voltage of the atomization device, such as Figure 2 As shown in the circuit schematic diagram, the left part of the inductor L2 corresponds to the power management circuit module. The present application uses a DC-to-DC converter (DCDC) chip, namely U6, to adjust the power supply voltage to the required working voltage. The model of DCDC is not specifically limited here. The driving circuit module 103 is respectively connected to the power management circuit module 102, the main control module 104 and the atomizer sheet 105, and is used to drive the atomizer sheet to vibrate based on the high-frequency signal duty cycle of the main control module 104, that is, the main control module generates a high-frequency signal through pulse width modulation (Pulse Width Modulation) output, and the driving circuit module can generate an atomizer sheet driving signal corresponding to the high-frequency signal duty cycle, and vibrate the atomizer sheet through the atomizer sheet driving signal. The main control module adjusts the PWM duty cycle to adjust the vibration power of the atomizer sheet, such as Figure 2 In the figure, the right part of the inductor L2 is the driving circuit module, PWM2 and AD4 are connected to the main control module respectively, PWM2 is the input end of the high-frequency signal, and AD4 is used to collect the atomizer plate driving signal for atomizer plate frequency scanning. It also includes a liquid detection circuit for detecting whether the atomizer cup head is short of liquid.

[0066] The above-mentioned main control module 104 is used to determine whether the obtained atomization working temperature is in the preset atomization compensation temperature threshold interval, and when the preset atomization compensation temperature threshold interval is the low temperature compensation temperature threshold interval, atomization compensation is performed by one of the following control methods: driving the DCDC voltage configuration module 107 electrically connected to the main control module 104 to increase the atomization sheet driving voltage. The atomization sheet heating module 108 electrically connected to the main control module is driven to work. The dotted line in the figure indicates that the module is a module that can be selected or set. The main control module can be a single-chip microcomputer inside the atomizer, or it can be other control chips, and this application does not make specific restrictions on this.

[0067] That is to say, in actual use of the present application, the atomization working temperature is first collected through the temperature detection module, and the main control module determines whether the atomization working temperature is within the preset atomization compensation temperature threshold range, thereby performing working compensation on the atomization sheet. The preset atomization compensation temperature threshold interval can be understood as a temperature interval that deviates from the optimal working temperature interval of the atomizer. For example, [15, 25] degrees Celsius is the optimal working temperature interval. When the atomization working temperature is less than 15 degrees Celsius or greater than 25 degrees Celsius, atomization compensation is required. For example, the low temperature compensation temperature threshold interval in the atomization compensation temperature threshold interval is (0, 15), (-∞, 15); the high temperature compensation temperature threshold interval is (25, 40], (25, +∞), and the numerical units of the interval are all degrees Celsius, where (0, 15) and (25, 40] can be understood as if the atomization working temperature is less than or equal to 0 degrees Celsius and greater than 40 degrees Celsius, the atomizer can be made not to work. The boundary value of the specific atomization compensation temperature threshold interval is not specifically limited here. The preset atomization compensation temperature threshold interval can also be adjusted and corrected during actual use, and this application does not make specific limitations on this.

[0068] Among them, if the atomization working temperature is lower than the minimum boundary threshold in the preset optimal working temperature range of the atomizer, such as 15 degrees Celsius mentioned above, the main control module determines that the atomization working temperature is in the low temperature compensation temperature threshold range, and the atomization rate can be maintained in two ways:

[0069] The first method is to increase the driving voltage of the atomizer and improve the vibration power of the atomizer. On the one hand, this method can directly improve the vibration intensity of the atomizer, thereby increasing the efficiency and output of atomization, ensuring the working efficiency of the atomizer at low temperatures and keeping the atomization rate unchanged. On the other hand, it can make the atomizer generate heat and reach the normal atomization working temperature faster.

[0070] The second method: directly heat the atomizer heating module connected to the system to increase the atomization working temperature. Preferably, after the atomization working temperature reaches the preset atomization compensation temperature threshold interval, the atomizer is controlled to perform atomization. The atomizer of the present application may also be operated according to user operation to perform atomization during the heating of the atomizer heating module, and the present application does not make specific restrictions on this. This method can directly heat and increase the temperature of the atomizer and its surrounding environment, which helps to improve the atomization performance in low temperature environments.

[0071] In another embodiment of the present application, when the atomization operating temperature is in the low temperature compensation temperature threshold interval, atomization compensation can also be performed simultaneously through the above two control methods, that is, simultaneously: driving the DCDC voltage configuration module electrically connected to the main control module to increase the atomization sheet driving voltage, and driving the atomization sheet heating module electrically connected to the main control module to work. That is, increasing the atomization sheet driving voltage and making the atomization sheet heating module work, so that the atomization sheet reaches the atomization operating temperature faster and maintains the atomization rate, improving the efficiency of atomization compensation.

[0072] In the embodiment of the present application, the DCDC voltage configuration module includes a parallel resistor for increasing the atomizer drive voltage, such as Figure 2 R13 is used to connect the parallel resistor to the DCDC voltage divider circuit of the power management circuit module according to the boost drive signal of the main control module, so as to change the voltage divider ratio of the DCDC voltage divider circuit and increase the atomizer drive voltage.

[0073] Specifically, the first end of the parallel resistor is connected to the main control module, and the second end is connected to the DCDC voltage divider circuit of the power management circuit module, and is connected in parallel with the pull-down resistor. R13 is connected to the FB pin of U6, connected to the DCDC voltage divider circuit composed of R27 and R30, and is connected in parallel with the pull-down resistor R30.

[0074] Furthermore, when the atomization operating temperature is in the low temperature compensation temperature threshold interval, and the present application selects the DCDC voltage configuration module for atomization compensation, the main control module can generate a boost drive signal, which is used to make the FB pin output a low level. At this time, the connection between R13 and the DCDC voltage divider circuit is turned on. By connecting two resistors in parallel, the voltage divider ratio of the DCDC voltage divider circuit changes, and the DCDC output voltage corresponding to the R27 resistor is increased, and the atomizer drive voltage is increased. Among them, the resistance values ​​of R27, R30, and R13 can increase the atomizer drive voltage and change the output voltage configuration of DCDC after R13 is connected to the DCDC voltage divider circuit, for example, from 15.5 volts (V) to 18V. The specific resistance value can be selected by the user according to actual use, and the present application does not make specific restrictions on this. When R13 is not turned on, that is, the Fb pin outputs a high level, the atomizer drive voltage is the above-mentioned 15.5V.

[0075] For example, the resistance ratio of the three resistors is 820:200:33. When R13 is turned on, R13 and R30 form a parallel resistor Rb. The parallel resistor Rb is:

[0076] Rb=(R13*R30) / (R13+R30)=(33*200) / (33+200)=28.3K, the resistance value is in kilo-ohms;

[0077] Vout=0.6+(R27*0.6) / Rb=0.6+(820*0.6) / 28.3=17.98V; 0.6 is the chip feedback voltage value.

[0078] In another embodiment of the present application, the above-mentioned atomizer sheet heating module at least includes a PI heating film applied to the ceramic surface of the atomizer sheet, which is used to, when the atomizer sheet heating module electrically connected to the driving main control module is working, turn on the connection between the power supply module and the PI heating film through the heating drive signal of the main control module, so that the PI heating film heats the ceramic surface of the atomizer sheet to increase the working temperature of the atomizer sheet.

[0079] Specifically, refer to Figure 3 The atomizer heating module includes a base resistor R36, an NPN transistor Q4, a pull-up resistor R23, a PMOS tube Q3 and a PI heating film. One end of the base resistor R36 is electrically connected to the main control module, and the other end is electrically connected to the base of the NPN transistor Q4. The collector of the NPN transistor Q4 is electrically connected to one end of the pull-up resistor R23 and the gate of the PMOS tube Q3, and the emitter of the NPN transistor Q4 is electrically connected to the negative electrode of the PI heating film and grounded. The other end of the pull-up resistor R23 is respectively connected to the source of the NPN transistor Q4 and the power supply module. The drain of the PMOS tube Q3 is electrically connected to the positive electrode of the PI heating film. Pi-Hot connects the PI heating film.

[0080] Furthermore, when the atomization operating temperature is within the low temperature compensation temperature threshold range, the main control module generates a heating drive signal. First, the main control module outputs HOT-PWM through the pin, so that the PMOS tube is turned on, and an AC drive signal is generated to drive the PI heating film to generate heat, thereby realizing the heating function. This method can prevent the heating circuit from directly contacting the liquid medicine, reduce the possibility of contaminating the liquid medicine, increase the atomization operating temperature, and ensure the atomization rate.

[0081] In another embodiment of the present application, the above-mentioned atomizer sheet heating module is electrically connected to two ends of the atomizer sheet stainless steel, and is used to connect the power supply module with the two ends of the atomizer sheet stainless steel through the heating drive signal of the main control module when the atomizer sheet heating module electrically connected to the driving main control module is working, so that the atomizer sheet stainless steel is heated to increase the working temperature of the atomizer sheet.

[0082] The atomizing heating module connected to the atomizing stainless steel can adopt the circuit design connected to the PI heating film mentioned above, and just connect the pi-Hot to the atomizing stainless steel. Figure 3The atomizer sheet heating module includes a base resistor R36, an NPN transistor Q4, a pull-up resistor R23 and a PMOS tube Q3. One end of the base resistor R36 is electrically connected to the main control module, and the other end is electrically connected to the base of the NPN transistor Q4. The collector of the NPN transistor Q4 is electrically connected to one end of the pull-up resistor R23 and the gate of the PMOS tube Q3, respectively, and the emitter of the NPN transistor Q4 is electrically connected to the first end of the atomizer sheet stainless steel and grounded. The other end of the pull-up resistor R23 is respectively connected to the source of the NPN transistor Q4 and the power supply module. The drain of the PMOS tube Q3 is electrically connected to the second end of the atomizer sheet stainless steel. Among them, the first end and the second end are symmetrically arranged on both sides of the atomizer sheet stainless steel.

[0083] Furthermore, when the atomization working temperature is in the low temperature compensation temperature threshold range, the main control module generates a heating drive signal. First, the main control module outputs HOT-PWM through the pin, so that the PMOS tube is turned on, and an AC drive signal is generated to drive the atomization sheet stainless steel to heat up, thereby realizing the heating function. There is no need to apply a PI heating film, which reduces the product production process. The characteristic of stainless steel itself that it will generate heat W = (U2 / R) * T is used. W is electrical energy, U is voltage, R is the fixed resistance of stainless steel itself, and T is time. Voltage is applied to stainless steel to convert electrical energy into thermal energy.

[0084] The signal frequency of the AC drive signal should be much lower than the working frequency of the atomizer to prevent the heating drive signal from affecting the atomizer drive. The use of AC drive signals through stainless steel can prevent the atomizer from being electrolyzed when water accumulates on the atomizer ceramic after the atomizer is powered by direct current, which can damage the atomizer ceramic.

[0085] In the embodiment of the present application, the heating drive signal is an AC drive signal obtained by the main control module based on the PID algorithm. Among them, the present application can pre-set a set temperature, which is at least in the preset optimal working temperature range of the atomizer.

[0086] For example, set temperature: target temperature (Setpoint, SP), such as 20 ° C. Actual temperature: current temperature (Process Variable, PV), obtained through the temperature detection module. Error: The error is the difference between the target temperature and the current temperature e(t) = SP-PV. Select PID control parameters: proportional gain K p : Affects the response strength of the controller to the error; integral gain K i : Eliminate long-term deviation (error accumulation); differential gain K d : Predict the error change trend and suppress rapid fluctuations. PID control formula:

[0087]

[0088] Control variable u(t): controls the output of the heating device (PWM duty cycle). Calculation process: calculate the current error e(t); calculate the integral part of the error; calculate the differential part of the error; and add the weighted sum of the three parts to get the control output. Find the appropriate K through experiments or automated parameter adjustment. p , K i , K d , so that the system: no overshoot or only very small overshoot; quickly stabilize at the set temperature; suppress temperature fluctuations.

[0089] In the embodiment of the present application, the main control module is also used for:

[0090] When it is determined that the obtained atomization operating temperature is not within the preset atomization compensation temperature threshold interval, the atomization compensation operation is not performed. When it is determined that the obtained atomization operating temperature is within the preset high-temperature compensation temperature threshold interval, the compensation high-frequency signal duty cycle corresponding to the high-temperature compensation temperature threshold interval is determined, so that the driving circuit module generates a corresponding atomization sheet driving signal according to the compensation high-frequency signal duty cycle, and drives the atomization sheet to vibrate.

[0091] In other words, if the atomization operating temperature is not within the preset atomization compensation temperature threshold range, atomization compensation is not required and the atomization compensation operation is not called.

[0092] When the temperature rises, although the ceramic performance will be improved, the drug solution will lose its efficacy due to the influence of high temperature. When the atomization working temperature is too high and reaches the above-mentioned high temperature compensation temperature threshold range, the atomization compensation cannot be completed through the above-mentioned DCDC voltage configuration module and atomization heating module.

[0093] In order to ensure the atomization rate and drug efficacy at high temperature, the main control module changes the duty cycle of the high-frequency signal output to the driving circuit module according to the pre-stored compensation high-frequency signal duty cycle corresponding to the high-temperature compensation temperature threshold interval, thereby generating a driving signal with a corresponding duty cycle change, causing the atomizer to vibrate, and the atomization vibration power of the atomizer is reduced. That is, the proportion of the atomization drive PWM is changed, the peak value of the atomizer drive voltage is reduced, and thus the atomizer drive efficiency is reduced, so as to keep the atomization effect the same as the normal temperature effect.

[0094] Among them, the high-temperature compensation temperature threshold interval can set multiple high-temperature compensation temperature threshold sub-intervals, and each interval can correspond to a different compensation high-frequency signal duty cycle. For example, in the optimal operating temperature interval and the low-temperature compensation temperature threshold interval, the high-frequency signal duty cycle is 50%; in a high-temperature compensation temperature threshold sub-interval, the compensation high-frequency signal duty cycle is 45%, and in another high-temperature compensation temperature threshold sub-interval, the compensation high-frequency signal duty cycle is 40%. The relationship between temperature and the compensation high-frequency signal duty cycle is a negative correlation, that is, the higher the temperature of the high-temperature compensation temperature threshold sub-interval where the atomization working temperature is located, the smaller the compensation high-frequency signal duty cycle. The correspondence between the high-temperature compensation temperature threshold interval and the compensation high-frequency signal duty cycle can be adjusted during actual use, and the compensation high-frequency signal duty cycle can be set according to the actual use scenario, and this application does not make specific restrictions on this.

[0095] Through the above technical solution, the present application can detect the working temperature of the atomizer in real time, and can automatically trigger the compensation mechanism to ensure that the atomization process can be carried out within the optimal temperature range, thereby improving the atomization efficiency and stability. At the same time, the present application improves two compensation methods, one is to increase the atomizer plate driving voltage, and the other is to start the atomizer plate heating module. The two compensation methods complement each other and can select the optimal method for atomization compensation according to actual conditions. Furthermore, by integrating the temperature detection module, the intelligent judgment and compensation mechanism, and the flexible voltage regulation strategy, the adaptability of the atomizer device to changes in ambient temperature is significantly improved, the stable control of the atomization rate is achieved, and a more high-quality and stable atomization experience is brought to users.

[0096] Figure 4 A schematic flow chart of an atomization control method for an atomization device provided in an embodiment of the present application is shown in FIG. Figure 4 As shown, the method includes steps S401-S404:

[0097] S401, obtaining the atomization working temperature of the atomization device in real time.

[0098] S402, determining whether the atomization working temperature is in a preset atomization compensation temperature threshold interval, and when the preset atomization compensation temperature threshold interval is a low temperature compensation temperature threshold interval, performing atomization compensation by one of the following control methods.

[0099] S403, driving the DCDC voltage configuration module to increase the atomizer sheet driving voltage and / or driving the atomizer sheet heating module to operate.

[0100] Among them, the present application can use a control method to drive the DCDC voltage configuration module to increase the atomizer driving voltage and drive the atomizer heating module to work to compensate for low-temperature atomization, or it can drive the DCDC voltage configuration module and the atomizer heating module to work at the same time. The present application does not make specific restrictions on this. The execution subject of the above method can be a microcontroller of the atomizer device, but is not limited to the microcontroller of the atomizer device, and can also be a control unit connected to the atomizer device and capable of communicating with the atomizer device, such as a mobile phone, a computer, etc. The present application does not make specific restrictions on this.

[0101] The atomizing heating module can achieve heating by using a PI heating film or by applying an AC driving signal to both ends of the stainless steel of the atomizing sheet.

[0102] In one embodiment of the present application, the method further includes:

[0103] When it is determined that the obtained atomization operating temperature is not within the preset atomization compensation temperature threshold interval, the atomization compensation operation is not performed. When it is determined that the obtained atomization operating temperature is within the preset high-temperature compensation temperature threshold interval, the compensation high-frequency signal duty cycle corresponding to the high-temperature compensation temperature threshold interval is determined, so that the driving circuit module generates a corresponding atomization sheet driving signal according to the compensation high-frequency signal duty cycle, and drives the atomization sheet to vibrate.

[0104] Figure 5 This is a schematic diagram of the structure of an atomizing heating structure provided in an embodiment of the present application. The atomizing heating structure can be heated under the control of the atomizing control method for an atomizing device described above. The atomizing heating structure includes a PI heating film and a fixing member attached to the ceramic surface of the atomizing sheet. The heating element of the PI heating film is located in the annular area formed by the ceramic sheet. Figure 5 Only one type of heating element circuit of a PI heating film is shown, and the present application does not make any specific limitation on the heating element circuit. Meanwhile, the heating element can be a metal wire or an etched wire, which is not specifically limited here.

[0105] The PI heating film is attached to the annular area of ​​the ceramic surface of the atomizer sheet through a fixing member, and the shape of the PI heating film matches the shape of the annular area formed by the ceramic surface of the atomizer sheet.

[0106] In one embodiment of the present application, the fixing member is a silicone ring, and the shape of the silicone ring matches the shape of the annular area formed by the ceramic surface of the atomizer.

[0107] In another embodiment of the present application, during the heating process controlled by an atomization control method for an atomization device, the atomization heating structure is heated based on the atomization working temperature collected by the temperature detection module. The temperature detection module includes one or more of the following: an NTC thermistor attached to the atomization sheet, and a temperature sensor disposed on a circuit board of the atomization device.

[0108] In other words, the temperature detection module of the atomizer of the present application can be an NTC thermistor attached to the atomizer sheet, or a temperature sensor set on the circuit board of the atomizer device, wherein the NTC thermistor can directly collect the surface temperature of the atomizer sheet, and the temperature sensor collects the ambient temperature as the atomization working temperature. The present application can select the above one as the temperature detection module, and can also set the NTC thermistor and the temperature sensor at the same time according to the needs, and the present application does not make specific restrictions on this.

[0109] Figure 6-Figure 8 They are the atomization rate curves of the atomizer without temperature compensation at different temperatures when there is no atomization control scheme with temperature compensation. The horizontal axis of the curve is temperature, and the vertical axis is atomization rate. The unit is mL / min. The corresponding temperatures of the curve include: 5 degrees Celsius, 10 degrees Celsius, 15 degrees Celsius, 20 degrees Celsius, 25 degrees Celsius, 30 degrees Celsius, and 40 degrees Celsius. The atomization rate ratio of the atomizer at different temperatures is shown in the following table:

[0110]

[0111] Figure 9-11 The following are the curves of the atomization rate of the improved atomizer at different temperatures after testing through the above atomization control scheme. The corresponding atomization rate ratios are shown in the following table:

[0112]

[0113]

[0114] Fig.12 This is a photo of the cup head of the atomizer. Fig.13 This is a schematic diagram of the bottom contact of the atomizer cup of the atomizer device. Fig.14 This is a schematic diagram of the PCBA electric contact at the bottom of the atomizer cup of the atomizer device, where A represents the liquid detection probe; B represents the positive atomizer sheet drive probe; C represents the negative atomizer sheet drive probe; D represents the temperature detection sensor; E represents the heating probe; G represents the rear shell of the atomizer sheet assembly; H represents the rear silicone of the atomizer sheet; I represents the atomizer sheet; J represents the front silicone of the atomizer sheet; K represents the front shell of the atomizer sheet assembly; and M represents the front cover of the atomizer cup.

[0115] Each embodiment in this application is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the method and atomization heating structure embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the system embodiment.

[0116] The method and atomization heating structure provided in the embodiments of the present application correspond one-to-one to the system content. Therefore, the method and atomization heating structure also have similar beneficial technical effects as the corresponding systems. Since the beneficial technical effects of the system have been described in detail above, the beneficial technical effects of the method and atomization heating structure will not be repeated here.

[0117] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0118] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An atomization control system for an atomization device, characterized in that: The system comprises: a temperature detection module, a power management circuit module, a driving circuit module, a main control module, an atomizing sheet, and a power supply module electrically connected to the power management circuit module; The temperature detection module is electrically connected to the main control module, and is used to collect the atomization working temperature of the atomization device and send it to the main control module; The power management circuit module is used to adjust the voltage of the power supply module to the required working voltage of the atomization device; The driving circuit module is respectively connected to the power management circuit module, the main control module and the atomizing sheet, and is used to drive the atomizing sheet to vibrate based on the duty cycle of the high-frequency signal of the main control module; The main control module is used to determine whether the obtained atomization working temperature is within a preset atomization compensation temperature threshold interval, and when the preset atomization compensation temperature threshold interval is a low temperature compensation temperature threshold interval, perform atomization compensation by one of the following control methods: Driving the DCDC voltage configuration module electrically connected to the main control module to increase the atomizer sheet driving voltage; The atomizing sheet heating module electrically connected to the main control module is driven to work.

2. The atomization control system for an atomization device according to claim 1, characterized in that: The DCDC voltage configuration module includes a parallel resistor for increasing the atomizer sheet driving voltage, and is used to connect the parallel resistor to the DCDC voltage divider circuit of the power management circuit module according to the boost driving signal of the main control module to change the voltage divider ratio of the DCDC voltage divider circuit and increase the atomizer sheet driving voltage.

3. The atomization control system for an atomization device according to claim 2, characterized in that: The first end of the parallel resistor is connected to the main control module, and the second end is connected to the DCDC voltage divider circuit of the power management circuit module and is connected in parallel with the pull-down resistor.

4. The atomization control system for an atomization device according to claim 1, characterized in that: The atomizer sheet heating module at least includes a PI heating film attached to the ceramic surface of the atomizer sheet, which is used to conduct the connection between the power supply module and the PI heating film through the heating drive signal of the main control module when driving the atomizer sheet heating module electrically connected to the main control module to heat the ceramic surface of the atomizer sheet by the PI heating film to increase the working temperature of the atomizer sheet.

5. The atomization control system for an atomization device according to claim 4, characterized in that: The atomizer heating module includes a base resistor, an NPN transistor, a pull-up resistor, a PMOS tube and the PI heating film; One end of the base resistor is electrically connected to the main control module, and the other end is electrically connected to the base of the NPN transistor; The collector of the NPN transistor is electrically connected to one end of the pull-up resistor and the gate of the PMOS tube, and the emitter of the NPN transistor is electrically connected to the negative electrode of the PI heating film and is grounded; The other end of the pull-up resistor is connected to the source of the NPN transistor and the power supply module respectively; The drain of the PMOS tube is electrically connected to the positive electrode of the PI heating film.

6. The atomization control system for an atomization device according to claim 1, characterized in that: The atomizer sheet heating module is electrically connected to two ends of the atomizer sheet stainless steel, and is used to conduct the connection between the power supply module and the two ends of the atomizer sheet stainless steel through the heating drive signal of the main control module when driving the atomizer sheet heating module electrically connected to the main control module to work, so that the atomizer sheet stainless steel is heated to increase the working temperature of the atomizer sheet.

7. The atomization control system for an atomization device according to claim 6, characterized in that: The atomizer heating module includes a base resistor, an NPN transistor, a pull-up resistor and a PMOS tube; One end of the base resistor is electrically connected to the main control module, and the other end is electrically connected to the base of the NPN transistor; The collector of the NPN transistor is electrically connected to one end of the pull-up resistor and the gate of the PMOS tube respectively, and the emitter of the NPN transistor is electrically connected to the first end of the stainless steel of the atomizer sheet and is grounded; The other end of the pull-up resistor is connected to the source of the NPN transistor and the power supply module respectively; The drain of the PMOS tube is electrically connected to the second end of the atomizing stainless steel sheet; wherein the first end and the second end are symmetrically arranged on both sides of the atomizing stainless steel sheet.

8. An atomization control system for an atomization device according to any one of claims 4 or 6, characterized in that: The heating driving signal is an AC driving signal obtained by the main control module based on a PID algorithm.

9. The atomization control system for an atomization device according to claim 1, characterized in that: The main control module is also used for: When it is determined that the atomization operating temperature is not within the preset atomization compensation temperature threshold range, no atomization compensation operation is performed; When it is determined that the acquired atomization working temperature is in a preset high-temperature compensation temperature threshold interval, the compensation high-frequency signal duty cycle corresponding to the high-temperature compensation temperature threshold interval is determined, so that the driving circuit module generates a corresponding atomization sheet driving signal according to the compensation high-frequency signal duty cycle to drive the atomization sheet to vibrate.

10. An atomization control method for an atomization device, characterized in that: The method comprises: Obtain the atomization working temperature of the atomization device in real time; Determine whether the atomization working temperature is in a preset atomization compensation temperature threshold interval, and when the preset atomization compensation temperature threshold interval is a low temperature compensation temperature threshold interval, perform atomization compensation by one of the following control methods: Drive the DCDC voltage configuration module to increase the atomizer drive voltage; Drive the atomizer heating module to work.

11. The atomization control method for an atomization device according to claim 10, characterized in that: The method further comprises: When it is determined that the atomization operating temperature is not within the preset atomization compensation temperature threshold range, no atomization compensation operation is performed; When it is determined that the acquired atomization working temperature is in a preset high-temperature compensation temperature threshold interval, the compensation high-frequency signal duty cycle corresponding to the high-temperature compensation temperature threshold interval is determined, so that the driving circuit module generates a corresponding atomization sheet driving signal according to the compensation high-frequency signal duty cycle to drive the atomization sheet to vibrate.

12. An atomizing heating structure, characterized in that: The atomization heating structure is heated based on the control of an atomization control method for an atomization device according to any one of claims 10 to 11; the atomization heating structure comprises a PI heating film and a fixing part attached to the ceramic surface of the atomization sheet; The PI heating film is attached to the annular area of ​​the ceramic surface of the atomizer sheet through the fixing member, and the shape of the PI heating film matches the shape of the annular area formed by the ceramic surface of the atomizer sheet.

13. The atomizing heating structure according to claim 12, characterized in that: The fixing member is a silicone ring, and the shape of the silicone ring matches the shape of the annular area formed by the ceramic surface of the atomizing sheet.

14. The atomizing heating structure according to claim 12, characterized in that: The atomization heating structure performs heating based on the atomization working temperature collected by the temperature detection module; the temperature detection module includes one or more of the following: an NTC thermistor attached to the atomization sheet, and a temperature sensor arranged on the circuit board of the atomization device.

Images