Method for controlling heating state of atomizing core and related device

Abstract

The invention provides a method for controlling the heating state of an atomizing core and a related device. The method for controlling the heating state of the atomizing core comprises the steps that temperature data of the atomizing core are obtained for multiple times in each of multiple continuous heating periods, and multiple basic temperature data sets are obtained; wherein the basic temperature data set comprises a plurality of basic temperature data; selecting a basic temperature data set with the maximum temperature rise from the plurality of basic temperature data sets as a reference temperature data set; in a heating period after the reference temperature data set is obtained, temperature data of the atomization core are obtained for multiple times, and a to-be-evaluated temperature data set is obtained; wherein the to-be-evaluated temperature data set comprises a plurality of to-be-evaluated temperature data; and the atomization state of the atomization core is judged according to the to-be-evaluated temperature data set and the reference temperature data set. According to the method for controlling the heating state of the atomizing core, the measurement error is reduced, the matrix adaptability is high, and the problems of misinformation and missing report are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic atomization, and in particular to a method for controlling the heating state of an atomization core and a related device. Background Art

[0002] The aerosol generating device includes a power supply component and an atomizing core electrically connected to the power supply, the power supply component is used to supply power to the main unit, and the atomizing core includes a heating element, which is used to heat and atomize the aerosol generating matrix to form an aerosol when working. When the aerosol generating device is working, the aerosol generating matrix is ​​evaporated by heat, the heating element gradually heats up, and the temperature field in the atomizing core gradually tends to a thermal equilibrium state; however, as the amount of aerosol generating matrix in the aerosol generating device gradually decreases to the point where there is no aerosol generating matrix, the thermal equilibrium state is gradually broken, and the temperature of the heating element rises rapidly, that is, the heating element is dry-burned, which will produce a large amount of harmful substances, which will not only affect the taste of the puff, but also seriously endanger the health of the user. Therefore, it is necessary to prevent the occurrence of dry burning. Summary of the invention

[0003] The method and related device for controlling the heating state of the atomizer core provided in the present application mainly solve the problem of dry burning of the heating element during the heating atomization process.

[0004] In order to solve the above technical problems, a technical solution adopted by the present application is: to provide a method for controlling the heating state of an atomizer core, the method for controlling the heating state of an atomizer core comprising: acquiring the temperature data of the atomizer core multiple times in each heating cycle of multiple consecutive heating cycles to obtain multiple basic temperature data groups; wherein the basic temperature data group comprises multiple basic temperature data; selecting one of the multiple basic temperature data groups with the largest temperature increase as a reference temperature data group; within a heating cycle after obtaining the reference temperature data group, acquiring the temperature data of the atomizer core multiple times to obtain a temperature data group to be evaluated; wherein the temperature data group to be evaluated comprises multiple temperature data to be evaluated; and judging the atomization state of the atomizer core according to the temperature data group to be evaluated and the reference temperature data group.

[0005] In one embodiment, the temperature data of the atomizer core is obtained multiple times in each heating cycle, including:

[0006] In each heating cycle, starting from the heating of the atomizer core, the temperature data of the atomizer core is acquired once at a first preset time interval;

[0007] Among them, the first preset time is less than 100 milliseconds; the number of times the temperature data of the atomizer core is obtained in each heating cycle is greater than 20 times; and the number of heating cycles in the multiple consecutive heating cycles is less than or equal to 10.

[0008] In one embodiment, obtaining the temperature data of the atomizer core includes:

[0009] Directly obtain the temperature data of the atomizer core; or

[0010] By acquiring the resistance data of the heating element of the atomizer core, the resistance data of the heating element is used to represent the temperature data of the atomizer core.

[0011] In one embodiment, selecting a basic temperature data group with the largest temperature increase from the multiple basic temperature data groups as a reference temperature data group includes:

[0012] The basic temperature data obtained at the same time point of the two basic temperature data groups are compared, wherein the basic temperature data group with the largest temperature increase is compared with the next basic temperature data group, until the basic temperature data group with the largest temperature increase among the multiple basic temperature data groups is selected as the reference temperature data group.

[0013] In one embodiment, judging the atomization state of the atomizer core according to the temperature data group to be evaluated and the reference temperature data group includes:

[0014] Comparing the plurality of temperature data to be evaluated in the temperature data group to be evaluated with the reference temperature data in the reference temperature data group;

[0015] In response to the number of times that the temperature data to be evaluated is greater than the reference temperature data reaches a first preset number, determining that the heating state of the atomizer core is dry burning, and issuing a prompt signal and / or reducing the heating power of the atomizer core;

[0016] In response to the fact that the number of times that the temperature data to be evaluated is greater than the reference temperature data does not reach the first preset number of times, it is determined that the heating state of the atomizer core is not dry burning.

[0017] In one embodiment, after obtaining the reference temperature data group, the temperature data of the atomizer core is obtained multiple times in multiple consecutive heating cycles to obtain multiple temperature data groups to be evaluated; and judging the atomization state of the atomizer core according to the temperature data group to be evaluated and the reference temperature data group includes:

[0018] Comparing the plurality of temperature data to be evaluated in each of the temperature data groups to be evaluated with the reference temperature data in the reference temperature data group;

[0019] In response to the number of times that the plurality of the to-be-evaluated temperature data in the to-be-evaluated temperature data group are greater than the reference temperature data reaches a first preset number, determining that the atomizer core has a dry burning risk;

[0020] In response to the number of times that the atomizer core has a risk of dry burning reaching a second preset number, determining that the heating state of the atomizer core is dry burning, and issuing a prompt signal and / or reducing the heating power of the atomizer core;

[0021] In response to the number of times that the atomizer core has a risk of dry burning not reaching a second preset number, it is determined that the heating state of the atomizer core is not dry burning.

[0022] In one embodiment, in response to the heating state of the atomizer core being not dry-burning, obtaining the number of the temperature data groups to be evaluated obtained after obtaining the reference temperature data group;

[0023] In response to the number of the temperature data groups to be evaluated reaching a preset number, a temperature data group with the largest temperature increase is selected from the plurality of temperature data groups to be evaluated and / or the reference temperature data groups as an updated reference temperature data group.

[0024] In one embodiment, in response to receiving a signal for replacing the atomizer core or a signal for replacing the aerosol generating substrate of the atomizer core, the method for controlling the heating state of the atomizer core is initialized and repeatedly executed.

[0025] In order to solve the above technical problems, the second technical solution provided by the present application is: to provide a control circuit, including: a detection module and a processing module, wherein the detection module is used to obtain the temperature data of the atomizer core multiple times in each heating cycle of multiple consecutive heating cycles to obtain multiple basic temperature data groups; wherein the basic temperature data group includes multiple basic temperature data;

[0026] The processing module is used to select a basic temperature data group with the largest temperature increase from the multiple basic temperature data groups as a reference temperature data group;

[0027] The detection module is also used to obtain the temperature data of the atomizer core multiple times within a heating cycle after obtaining the reference temperature data group, so as to obtain a temperature data group to be evaluated; wherein the temperature data group to be evaluated includes a plurality of temperature data to be evaluated;

[0028] The processing module is further used to determine the atomization state of the atomization core according to the temperature data group to be evaluated and the reference temperature data group.

[0029] In order to solve the above technical problems, the third technical solution provided in the present application is: to provide an aerosol generating device, including a memory and a processor, the memory storing program instructions, and the processor calling the program instructions from the memory to execute the method for controlling the heating state of the atomization core as mentioned above.

[0030] In one embodiment, the aerosol generating device further includes an atomizing core; the atomizing core includes a heating element with TCR performance, and the processor is used to obtain resistance data of the heating element.

[0031] In order to solve the above technical problems, the fourth technical solution provided by the present application is: providing a computer-readable storage medium, wherein the computer-readable storage medium is used to store a control program, and when the control program is executed by a processor, it is used to implement the method of controlling the heating state of the atomizer core as involved above.

[0032] The beneficial effects of the embodiments of the present application are different from the prior art: a method for controlling the heating state of the atomizer core is provided, and the method for controlling the heating state of the atomizer core includes: obtaining the temperature data of the atomizer core multiple times in each heating cycle of multiple consecutive heating cycles to obtain multiple basic temperature data groups; wherein the basic temperature data group includes multiple basic temperature data; selecting a basic temperature data group with the largest temperature increase from the multiple basic temperature data groups as a reference temperature data group; in a heating cycle after obtaining the reference temperature data group, obtaining the temperature data of the atomizer core multiple times to obtain a temperature data group to be evaluated; wherein the temperature data group to be evaluated includes multiple temperature data to be evaluated; judging the atomization state of the atomizer core according to the temperature data group to be evaluated and the reference temperature data group. In this way, the method for controlling the heating state of the atomizer core can more accurately detect whether the heating state of the atomizer core is dry burning, reduce the probability of false alarms and missed alarms, and effectively prevent the atomizer core from dry burning; the method is suitable for various aerosol generation substrates, and the aerosol generation substrate has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a flow chart of a method for controlling the heating state of an atomizer core provided in one embodiment of the present application;

[0034] Figure 2 yes Figure 1 A schematic flow chart of step S4 in the method for controlling the heating state of the atomizer core provided;

[0035] Figure 3 yes Figure 1 A schematic flow chart of another embodiment of step S4 in the method for controlling the heating state of the atomizer core provided;

[0036] Figure 4 It is a temperature rise curve of a high TCR heating element during the heating process;

[0037] Figure 5 It is a summary diagram of the temperature rise curves formed by all heating during the process of aerosol generation matrix from oil to oil-free;

[0038] Figure 6 It is a flow chart of step S45 and step S46 in the method for controlling the heating state of the atomizer core provided in the present application;

[0039] Figure 7 It is a flow chart of step S47 in the method for controlling the heating state of the atomizer core provided in the present application;

[0040] Figure 8 It is a structural schematic diagram of a control circuit provided by the present application;

[0041] Fig. 9 It is a structural schematic diagram of an aerosol generating device provided by the present application;

[0042] Fig.10 It is a structural schematic diagram of a computer-readable storage medium provided by this application. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. 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 creative work are within the scope of protection of this application.

[0044] The terms "first", "second", "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of this application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0045] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0046] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0047] Aerosol generating devices usually use a liquid matrix, such as tobacco oil, as fuel, and generate aerosol by heating and evaporating the liquid matrix for users to inhale. Aerosol generating devices usually include: batteries, atomizer bombs, airflow sensors or buttons and control circuits. The atomizer bomb contains an atomizer core and an aerosol generating matrix. The atomizer core includes a porous matrix and a heating element. The porous matrix is ​​used to guide and temporarily store the aerosol generating matrix, and the heating element is used to generate heat when powered on to heat the atomized aerosol generating matrix. During operation, when the control circuit detects a start signal, for example, the airflow sensor detects negative pressure or the button detects a press signal, the battery power supply path is opened to power the heating element, and the heating element heats the aerosol generating matrix to a vapor state. Compared with traditional atomizers, the heating-not-burning aerosol generating device produces fewer harmful substances and is more environmentally friendly.

[0048] Among them, when the aerosol generating device is working normally, the aerosol generating matrix in the porous matrix is ​​heated and evaporated, and the heating body will rise to 200℃~250℃. At this time, the temperature field in the atomization core is in a thermal equilibrium state. As the aerosol generating matrix in the porous matrix is ​​reduced to nothing, the thermal equilibrium state is gradually broken, and the temperature of the heating body rises rapidly; that is, the heating body is dry-burned. Dry burning of the heating body will produce a large amount of harmful substances, which not only brings a bad smoking experience, but also seriously endangers the health of the user. Therefore, it is necessary to prevent the occurrence of dry burning.

[0049] In the related art, the mainstream method to prevent dry burning is mainly to use the high TCR (temperature coefficient of resistance, referred to as TCR) heating element. When heated, its temperature change corresponds to the resistance value. The temperature of the heating element is estimated by detecting the resistance value. When the temperature reaches a specific warning value, the battery output power is reduced to prevent the occurrence of dry burning. However, this method requires a large number of experiments in advance to determine the warning temperature, and generally has high costs and large measurement errors. In addition, the adaptability of the aerosol generation matrix is ​​not strong, and it is easy to have false alarms and missed reports. The present invention provides a method for controlling the heating state of an atomizer core, which can more accurately detect whether the heating state of the atomizer core is dry burning, thereby reducing the amount of harmful substances generated due to dry burning.

[0050] See also Figure 1 , Figure 1 This is a flow chart of a method for controlling the heating state of an atomizer core provided by an embodiment of the present application; in this embodiment, a method for controlling the heating state of an atomizer core is provided, and the method is used to judge the atomization state of the atomizer core, and according to the atomization state of the atomizer core, the system takes corresponding measures; the method specifically includes:

[0051] Step S1: acquiring the temperature data of the atomizer core multiple times in each of multiple consecutive heating cycles to obtain multiple basic temperature data groups; wherein the basic temperature data group includes multiple basic temperature data.

[0052] Among them, each heating cycle is the time for the user to take one puff or one puff, which can be 1 second, 2 seconds, 4 seconds, etc., and can be different according to the user's puffing habits. For example, each heating cycle is the time from the airflow sensor detecting the negative pressure to the disappearance of the negative pressure. The number of heating cycles in multiple consecutive heating cycles is less than or equal to 10. For example, the number of heating cycles can be 2 times, 3 times, 4 times, 5 times, 6 times, preferably, 4 times. If the number of heating cycles is too large, the total running time of the method for controlling the heating state of the atomizer core will be too long. In the case where the content of the aerosol generating matrix is ​​unknown, if the content of the aerosol generating matrix is ​​too small, or the user's puffing time is too long each time, the heating cycle number has not been completed, and the reference temperature data has not been obtained. The heating state of the atomizer core may have been dry-burned. Because the method for controlling the heating state of the atomizer core needs to be compared with the temperature data of the atomizer core obtained during the heating cycle to form a reference temperature data group, the number of heating cycles needs to be at least two.

[0053] In each heating cycle, the atomizer core starts to heat, and the temperature data of the atomizer core is obtained once every first preset time. The first preset time is less than 100 milliseconds, for example, it can be any time in the range of 10 milliseconds to 50 milliseconds. In this embodiment, the first preset time is 30 milliseconds. If the time is too short, the temperature data of the atomizer core obtained is too concentrated, not representative, and the amount of calculation is too large. If the time is too long, the temperature data of the atomizer core obtained in the heating cycle is too little, not representative, and the accuracy is reduced. The number of times the temperature data of the atomizer core is obtained in each heating cycle is greater than 20 times, and can be 20 times to 50 times, for example 30 times.

[0054] In order to facilitate storage and calculation, the temperature data of the atomizer core collected each time may be rounded.

[0055] In a specific embodiment, step S1 specifically includes: acquiring the basic temperature data of the atomizer core multiple times in each heating cycle to obtain a basic temperature data group. Wherein, each acquisition obtains a basic temperature data of the atomizer core; multiple acquisitions are performed in each heating cycle to obtain multiple basic temperature data, and the multiple basic temperature data are used as a basic temperature data group. Multiple heating cycles correspond to multiple basic temperature data groups one by one.

[0056] Among them, the temperature of the atomizer sheet can be detected by using a high temperature coefficient of resistance (TCR) heating wire (such as SS316L) or by setting a temperature characteristic device on the atomizer core. The temperature characteristic device can be a positive temperature coefficient thermistor, a negative temperature coefficient thermistor, etc., which can detect the temperature of the atomizer core. It can be understood that the atomizer core usually includes a piezoelectric ceramic sheet and a metal substrate. It can also be obtained by using a high TCR heating wire (such as SS316L) or setting the metal substrate to have TCR performance, and obtaining the resistance data of the heating element of the atomizer core. The temperature of the metal substrate is obtained to obtain the temperature of the atomizer core. The obtained atomizer core temperature is its real-time temperature.

[0057] Step S2: Selecting a basic temperature data set with the largest temperature increase from multiple basic temperature data sets as a reference temperature data set.

[0058] Specifically, multiple basic temperature data groups are compared in pairs, and the comparison method is: the data at the same time point of the two basic temperature data groups are compared. Specifically, the basic temperature data obtained at the same time point of the two basic temperature data groups are compared. The basic temperature data group with the largest temperature increase is then compared with the next basic temperature data group, until the basic temperature data group with the largest temperature increase among the multiple basic temperature data groups is selected as the reference temperature data group.

[0059] Suppose there are two basic temperature data groups, both of which include N temperature data. The first basic temperature data group includes T1, T2, T3, T4...Tn; the second basic temperature data group includes T'1, T'2, T'3, T'4...T'n; wherein n is a natural number greater than or equal to 2 for illustration. It can be understood that Tn and T'n are temperature data acquired at the same time point in two heating cycles; for example, T1 and T'1 are temperature data acquired at the same time point in two heating cycles; T3 and T'3 are temperature data acquired at the same time point in two heating cycles. The above-mentioned basic temperature data acquired at the same time point in the two basic temperature data groups are compared respectively, that is, Tn is compared with T'n. In the specific implementation process, the N temperature data in the two basic temperature data groups are compared respectively. For each comparison, if Tn in the first basic temperature data group is greater than T'n in the second basic temperature data group, 1 point is scored, otherwise 1 point is scored; if Tn in the first basic temperature data group is equal to T'n in the second basic temperature data group, 0 point is scored. Then, each score is accumulated. If the final score is positive, the first basic temperature data group is considered to be the basic temperature data group with the largest temperature increase.

[0060] Similarly, when the number of basic temperature data groups is greater than two, the temperature data of every two basic temperature data groups are compared, and the comparison method is similar to that described above. Finally, the basic temperature data group corresponding to the highest score is compared with the temperature data in the next basic temperature data group, and the comparison method is also similar to that described above, and so on, until finally a basic temperature data group with the largest temperature increase among multiple basic temperature data groups is selected, and the basic temperature data group with the largest temperature increase is used as the reference temperature data group.

[0061] For example, data group A is 7, 8, 9; data group B is 6, 9, 10. Then data group A 7 is compared with data group B 6, data group A 8 is compared with data group B 9, and data group A 9 is compared with data group B 10. After the comparison, it can be found that data group A has 1 large value and data group B has 2 large values, so the comparison result is that the temperature data of data group B is higher. After all basic temperature data groups are compared in this way, the basic temperature data group with the largest temperature increase is obtained.

[0062] Step S3: After obtaining the reference temperature data group, the temperature data of the atomizer core is obtained multiple times within a heating cycle to obtain a temperature data group to be evaluated; wherein the temperature data group to be evaluated includes multiple temperature data to be evaluated.

[0063] Among them, a heating cycle refers to a heating cycle from the start of heating to the stop of heating, such as the time from the airflow sensor detecting the negative pressure to the disappearance of the negative pressure. This application assumes that the length of each heating cycle of the same user meets the time requirements for obtaining the temperature data group. For example, the acquisition time period of the temperature data group is 0 to 0.6 seconds after the start of heating until the temperature data group is acquired. It is required that each heating cycle needs to be greater than 0.6 seconds. In a specific implementation, if the heating cycle time does not meet the acquisition time requirements of the temperature data group, no dry burning judgment can be made for this heating cycle, and the collected data will be discarded. It can be understood that the interval time of obtaining the temperature data of the atomizer core multiple times in step S3 is the same as the interval time of obtaining the temperature data of the atomizer core multiple times in step S1, that is, one temperature data to be evaluated is obtained each time it is acquired; the time interval corresponding to each adjacent two temperature data to be evaluated is obtained The same as the time interval corresponding to each adjacent two temperature data in the reference temperature data group; so that the reference temperature data group and the temperature data group to be evaluated can be compared with the temperature data obtained at the same time point.

[0064] Step S4: judging the atomization state of the atomizer core according to the temperature data group to be evaluated and the reference temperature data group.

[0065] See also Figure 2 , Figure 2 yes Figure 1 A schematic flow chart of step S4 in the method for controlling the heating state of the atomizer core is provided. In one specific embodiment, step S4 specifically includes:

[0066] Step S41: comparing the plurality of temperature data to be evaluated in the temperature data group to be evaluated with the reference temperature data in the reference temperature data group.

[0067] Specifically, the difference between the temperature data to be evaluated and the reference temperature data obtained at the same time is calculated. If the difference between the temperature data to be evaluated and the reference temperature data is positive, the temperature data to be evaluated is considered to be large. If the difference between the temperature data to be evaluated and the reference temperature data is negative, the reference temperature data is considered to be large. If the difference between the temperature data to be evaluated and the reference temperature data is 0, the temperature data to be evaluated and the reference temperature data are considered to be equal. The number of times the temperature data of the atomizer core is obtained multiple times is the number of times the difference between the temperature data to be evaluated and the reference temperature data obtained at the same time is calculated.

[0068] Step S42: In response to the temperature data to be evaluated being greater than the reference temperature data for a number of times reaching a first preset number, determining that the heating state of the atomizer core is dry burning, and issuing a prompt signal and / or reducing the heating power of the atomizer core.

[0069] Specifically, the first preset number of times may be a quantity, and the value of the first preset number of times may not be less than two-thirds of the total number of the temperature data to be evaluated in the temperature data group to be evaluated. For example, if the total number of the temperature data to be evaluated in the temperature data group to be evaluated is 30, the first preset number of times may be 20 times, 22 times or 25 times, etc. Take the first preset number of 20 times as an example; if multiple temperature data to be evaluated in the temperature data group to be evaluated are compared with the reference data of the reference temperature data group; the number of times that the temperature data to be evaluated is greater than the reference temperature data reaches 20 times, then it is determined that the heating state of the atomizer core is dry burning.

[0070] Of course, the first preset number of times can also be a ratio, for example, more than 70%. If the multiple temperature data to be evaluated in the temperature data group to be evaluated are compared with the reference data of the reference temperature data group, and the number of times the temperature data to be evaluated is greater than the reference temperature data accounts for more than 70% of the total number of comparisons in the current heating cycle, then the heating state of the atomizer core is determined to be dry burning.

[0071] The prompt signal may be a flashing warning light or a siren.

[0072] Step S43: In response to the fact that the number of times that the temperature data to be evaluated is greater than the reference temperature data does not reach a first preset number of times, it is determined that the heating state of the atomizer core is not dry burning.

[0073] See also Figure 3 , Figure 3 yes Figure 1 A flow chart of another embodiment of step S4 in the method for controlling the heating state of the atomizer core is provided. In another specific embodiment, after obtaining the reference temperature data set, the temperature data of the atomizer core is obtained multiple times in multiple consecutive heating cycles to obtain multiple temperature data sets to be evaluated; in this specific embodiment, step S4 specifically includes:

[0074] Step S41 ′: comparing the plurality of temperature data to be evaluated in the temperature data group to be evaluated with the reference temperature data in the reference temperature data group.

[0075] The difference between the temperature data to be evaluated and the reference temperature data obtained at the same time is calculated. If the difference between the temperature data to be evaluated and the reference temperature data is positive, the temperature data to be evaluated is considered to be larger. If the difference between the temperature data to be evaluated and the reference temperature data is negative, the reference temperature data is considered to be larger. If the difference between the temperature data to be evaluated and the reference temperature data is 0, the temperature data to be evaluated and the reference temperature data are considered to be equal.

[0076] Step S42 ′: in response to the number of times that the temperature data to be evaluated is greater than the reference temperature data reaching a first preset number, it is determined that the atomizer core has a dry burning risk.

[0077] Specifically, as mentioned above, the first preset number of times can be a number, for example, more than 20 times. If multiple temperature data to be evaluated in the temperature data group to be evaluated are compared with the reference data of the reference temperature data group. The number of times that the temperature data to be evaluated is greater than the reference temperature data reaches 20 times, then it is determined that the heating state of the atomizer core is dry burning. The first preset number of times can also be a ratio, for example, more than 70%. If multiple temperature data to be evaluated in the temperature data group to be evaluated are compared with the reference data of the reference temperature data group. The number of times that the temperature data to be evaluated is greater than the reference temperature data accounts for more than 70% of the total comparison times, then it is determined that the heating state of the atomizer core has a risk of dry burning.

[0078] Specifically, use experimental examples to illustrate: Figure 4 It is a temperature rise curve of a high TCR heating element during heating. The normal temperature resistance of the heating element is 0.9 ohms. Figure 4 The vertical axis represents the resistance value (for ease of calculation, the coordinate value is the actual resistance value multiplied by 100 and rounded to an integer), and the horizontal axis is the number of sampling points. The sampling is performed once every 30ms, and a total of 30 points are collected. Figure 4 It can be seen that the temperature rise curve flattens out after about 0.3s, which is a thermal equilibrium state.

[0079] like Figure 5 It is a summary diagram of all the temperature rise curves formed by heating the aerosol generation matrix from oil to oil-free. In the figure, Lines 1 represents a set of temperature rise curves with oil, Lines 2 represents a set of temperature rise curves close to oil-free, and Lines 3 represents a set of temperature rise curves when dry burning without oil.

[0080] from Figure 5 It can be seen that when there is oil (Lines 1), the temperature rise curve does not change much as a whole. Most of the time periods of the entire Lines 1 curve are stable within the range of 128-132, especially in the S adjacent heating processes before and after the curve basically overlaps or partially shows local changes; where local changes can refer to more than 15 points in the 30 sampling point data being the same, and less than 15 points showing changes of different sizes. When there is almost no oil (Lines 2), the temperature rise curve shows a significant jump relative to when there is oil. Wherein, by setting a suitable comparison threshold G, such as G = 20, that is, more than 20 points in the 30 points of temperature data have values ​​greater than the comparison curve value, the curve change at this time can be captured, and a dry burning alarm can be generated before the Lines 3 curve, i.e., dry burning, appears.

[0081] In this specific implementation, in response to the fact that the number of times that the temperature data to be evaluated is greater than the reference temperature data does not reach a first preset number, it is determined that the atomizer core does not have a dry burning risk.

[0082] Step S43': in response to the number of times that the atomizer core has a risk of dry burning reaching a second preset number, determining that the heating state of the atomizer core is dry burning, and issuing a prompt signal and / or reducing the heating power of the atomizer core.

[0083] The number of times the atomizer core has a risk of dry burning reaching the second preset number of times may be the number of times the risk of dry burning continuously reaches the second preset number of times, or the number of times the risk of dry burning cumulatively reaches the second preset number of times. Similar to the first preset number of times, the second preset number of times may be a number, such as 2 times or 3 times, etc. The second preset number of times may also be a ratio, such as 70% or 80%, etc.

[0084] Step S44': in response to the number of times that the atomizer core has the risk of dry burning not reaching a second preset number, determining that the heating state of the atomizer core is not dry burning.

[0085] In the above two specific embodiments, after the step of determining that the heating state of the atomizer core is not dry burning, the method further includes:

[0086] See also Figure 6 , Figure 6 It is a flow chart of steps S45 and S46 in the method for controlling the heating state of the atomizer core provided in the present application. Step S45: In response to the heating state of the atomizer core being not dry-burning, the number of the temperature data groups to be evaluated obtained after obtaining the reference temperature data group is obtained.

[0087] Step S46: In response to the number of the to-be-evaluated temperature data groups reaching a preset number, a temperature data group with the largest temperature increase is selected from the plurality of to-be-evaluated temperature data groups and / or the reference temperature data groups as an updated reference temperature data group.

[0088] Among them, the preset number can be equal to the number of heating cycles in the continuous multiple heating cycles in step S1. For example, the temperature data of the atomizer core is obtained multiple times in each heating cycle of the continuous 4 heating cycles in step S1 to obtain multiple basic temperature data groups. Then in step S46, the preset number is 4. The specific implementation method of selecting a temperature data group with the largest temperature increase from multiple temperature data groups to be evaluated and / or reference temperature data groups as the updated reference temperature data group is similar to the relevant description in the above step S2. After obtaining the updated reference temperature data group, steps S3 and S4 are executed cyclically until the dry burning judgment condition occurs.

[0089] Furthermore, the method further comprises:

[0090] See also Figure 7, is a flow chart of step S47 in the method for controlling the heating state of the atomizer core provided in the present application. Step S47: in response to receiving a signal for replacing the atomizer core or a signal for replacing the aerosol generating matrix of the atomizer cartridge, initialization is performed, and step S1 is repeated.

[0091] Specifically, the signal for replacing the atomizer core may be a signal for detecting that the electrical connection between the power supply assembly and the atomizer cartridge is disconnected and then connected, and upon receiving the signal, it is determined that the atomizer core is replaced. The signal for replacing the aerosol generating matrix of the atomizer cartridge may be a signal for detecting that the liquid injection port of the liquid storage chamber of the atomizer cartridge is opened and then closed, and upon receiving the signal, it is determined that the atomizer cartridge is replacing the aerosol generating matrix.

[0092] The present application provides a method for controlling the heating state of an atomizer core, and the method for controlling the heating state of an atomizer core comprises: acquiring the temperature data of the atomizer core multiple times in each heating cycle of multiple consecutive heating cycles to obtain multiple basic temperature data groups; wherein the basic temperature data group comprises multiple basic temperature data; selecting a basic temperature data group with the largest temperature rise from the multiple basic temperature data groups as a reference temperature data group; acquiring the temperature data of the atomizer core multiple times in a heating cycle after obtaining the reference temperature data group to obtain a temperature data group to be evaluated; wherein the temperature data group to be evaluated comprises multiple temperature data to be evaluated; judging the atomization state of the atomizer core according to the temperature data group to be evaluated and the reference temperature data group. The method for controlling the heating state of the atomizer core solves the problem of anti-dry burning only by a pure software method, and there is no problem of increasing costs; at the same time, it can more accurately detect whether the heating state of the atomizer core is dry burning, reduce the probability of false alarms and missed alarms, and effectively prevent the occurrence of dry burning in the atomizer core; and the method is applicable to various aerosol generating substrates, and the aerosol generating substrate has strong adaptability.

[0093] See also Figure 8 , Figure 8It is a structural schematic diagram of a control circuit provided by the present application. In one embodiment, a control circuit is provided, which can be used to execute the method for controlling the heating state of the atomizer core provided in the above embodiment. The control circuit includes: a detection module 51 and a processing module 52, the detection module 51 is used to obtain the temperature data of the atomizer core multiple times in each heating cycle of multiple consecutive heating cycles to obtain multiple basic temperature data groups; wherein the basic temperature data group includes multiple basic temperature data. The processing module 52 is used to select a basic temperature data group with the largest temperature increase from multiple basic temperature data groups as a reference temperature data group. The detection module 51 is also used to obtain the temperature data of the atomizer core multiple times in a heating cycle after obtaining the reference temperature data group, and obtain a temperature data group to be evaluated; wherein the temperature data group to be evaluated includes multiple temperature data to be evaluated. The processing module 52 is also used to judge the atomization state of the atomizer core according to the temperature data group to be evaluated and the reference temperature data group. For other specific functions of the detection module 51 and the processing module 52, please refer to the relevant description above.

[0094] See also Fig. 9 , Fig. 9 is a schematic diagram of the structure of an aerosol generating device provided by the present application. In one embodiment, an aerosol generating device is provided, comprising a memory 62 and a processor 63, wherein the memory 62 stores program instructions, and the processor 63 retrieves the program instructions from the memory 62 to execute the above-mentioned method of controlling the heating state of the atomizing core. The aerosol generating device also includes an atomizing core; the atomizing core includes a heating element with TCR performance, and the processor 63 is used to obtain the resistance data of the heating element.

[0095] The processor 63 may also be referred to as a CPU (Central Processing Unit). The processor 63 may be an integrated circuit chip having signal processing capabilities. The processor 63 may also be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. A general-purpose processor may be a microprocessor or the processor 63 may also be any conventional processor, etc.

[0096] The memory 62 can be a memory stick, a TF card, etc., which can store all the information in the electronic device of the device, including the input raw data, computer programs, intermediate operation results and final operation results are all stored in the memory 62. It stores and retrieves information according to the location specified by the controller. With the memory 62, the electronic device has a memory function and can ensure normal operation. The memory 62 of the electronic device can be divided into main memory (internal memory) and auxiliary memory (external memory) according to its purpose, and there is also a classification method of dividing it into external memory and internal memory. External memory is usually a magnetic medium or an optical disk, etc., which can store information for a long time. Memory refers to the storage component on the motherboard, which is used to store the data and programs currently being executed, but it is only used to temporarily store programs and data. If the power is turned off or the power is cut off, the data will be lost.

[0097] See also Fig.10 , Fig.10 Schematic diagram of a computer-readable storage medium provided by the present application. In one embodiment, a computer-readable storage medium is provided, and the computer-readable storage medium is used to store a control program 71, and when the control program is executed by the processor 63, it is used to implement the above-mentioned method of controlling the heating state of the atomizer core.

[0098] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0099] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0100] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for controlling the heating state of an atomizer core, characterized in that: include: Acquire the temperature data of the atomizer core multiple times in each heating cycle of multiple consecutive heating cycles to obtain multiple basic temperature data groups; wherein the basic temperature data group includes multiple basic temperature data; Selecting a basic temperature data group with the largest temperature increase from the multiple basic temperature data groups as a reference temperature data group; In a heating cycle after obtaining the reference temperature data group, the temperature data of the atomizer core is obtained multiple times to obtain a temperature data group to be evaluated; wherein the temperature data group to be evaluated includes a plurality of temperature data to be evaluated; The atomization state of the atomization core is determined according to the temperature data group to be evaluated and the reference temperature data group.

2. The method for controlling the heating state of the atomizer core according to claim 1, characterized in that: The temperature data of the atomizer core is obtained multiple times in each heating cycle, including: In each heating cycle, starting from the heating of the atomizer core, the temperature data of the atomizer core is acquired once at a first preset time interval; Among them, the first preset time is less than 100 milliseconds; the number of times the temperature data of the atomizer core is obtained in each heating cycle is greater than 20 times; and the number of heating cycles in the multiple consecutive heating cycles is less than or equal to 10.

3. The method for controlling the heating state of the atomizer core according to claim 1, characterized in that: Obtaining the temperature data of the atomizer core includes: Directly obtain the temperature data of the atomizer core; or By acquiring the resistance data of the heating element of the atomizer core, the resistance data of the heating element is used to represent the temperature data of the atomizer core.

4. The method for controlling the heating state of the atomizer core according to claim 1, characterized in that: The step of selecting a basic temperature data group with the largest temperature increase from the plurality of basic temperature data groups as a reference temperature data group comprises: The basic temperature data obtained at the same time point of the two basic temperature data groups are compared, wherein the basic temperature data group with the largest temperature increase is compared with the next basic temperature data group, until the basic temperature data group with the largest temperature increase among the multiple basic temperature data groups is selected as the reference temperature data group.

5. The method for controlling the heating state of the atomizer core according to claim 1, characterized in that: The step of judging the atomization state of the atomizer core according to the temperature data group to be evaluated and the reference temperature data group includes: Comparing the plurality of temperature data to be evaluated in the temperature data group to be evaluated with the reference temperature data in the reference temperature data group; In response to the number of times that the temperature data to be evaluated is greater than the reference temperature data reaches a first preset number, determining that the heating state of the atomizer core is dry burning, and issuing a prompt signal and / or reducing the heating power of the atomizer core; In response to the fact that the number of times that the temperature data to be evaluated is greater than the reference temperature data does not reach the first preset number of times, it is determined that the heating state of the atomizer core is not dry burning.

6. The method for controlling the heating state of the atomizer core according to claim 1, characterized in that: After obtaining the reference temperature data group, acquiring the temperature data of the atomizer core multiple times in multiple consecutive heating cycles to obtain multiple temperature data groups to be evaluated; The step of judging the atomization state of the atomizer core according to the temperature data group to be evaluated and the reference temperature data group includes: Comparing the plurality of temperature data to be evaluated in each of the temperature data groups to be evaluated with the reference temperature data in the reference temperature data group; In response to the number of times that the plurality of the to-be-evaluated temperature data in the to-be-evaluated temperature data group are greater than the reference temperature data reaches a first preset number, determining that the atomizer core has a dry burning risk; In response to the number of times that the atomizer core has a risk of dry burning reaching a second preset number, determining that the heating state of the atomizer core is dry burning, and issuing a prompt signal and / or reducing the heating power of the atomizer core; In response to the number of times that the atomizer core has a risk of dry burning not reaching a second preset number, it is determined that the heating state of the atomizer core is not dry burning.

7. The method for controlling the heating state of the atomizer core according to claim 5 or 6, characterized in that: The method further comprises: In response to the heating state of the atomizer core being not dry-burning, obtaining the number of the temperature data groups to be evaluated obtained after obtaining the reference temperature data group; In response to the number of the temperature data groups to be evaluated reaching a preset number, a temperature data group with the largest temperature increase is selected from the plurality of temperature data groups to be evaluated and / or the reference temperature data groups as an updated reference temperature data group.

8. The method for controlling the heating state of the atomizer core according to claim 1, characterized in that: In response to receiving a signal for replacing the atomizer core or a signal for replacing the aerosol generating substrate of the atomizer core, the steps of claim 1 are initialized and repeatedly executed.

9. A control circuit, characterized in that: include: A detection module and a processing module, wherein: The detection module is used to obtain the temperature data of the atomizer core multiple times in each heating cycle of multiple consecutive heating cycles to obtain multiple basic temperature data groups; wherein the basic temperature data group includes multiple basic temperature data; The processing module is used to select a basic temperature data group with the largest temperature increase from the multiple basic temperature data groups as a reference temperature data group; The detection module is also used to obtain the temperature data of the atomizer core multiple times within a heating cycle after obtaining the reference temperature data group, so as to obtain a temperature data group to be evaluated; wherein the temperature data group to be evaluated includes a plurality of temperature data to be evaluated; The processing module is further used to determine the atomization state of the atomization core according to the temperature data group to be evaluated and the reference temperature data group.

10. An aerosol generating device, characterized in that: The method comprises a memory and a processor, wherein the memory stores program instructions, and the processor retrieves the program instructions from the memory to execute the method for controlling the heating state of the atomizer core according to any one of claims 1 to 8.

11. The aerosol generating device according to claim 10, characterized in that: The aerosol generating device also includes an atomizing core; the atomizing core includes a heating element with TCR performance, and the processor is used to obtain resistance data of the heating element.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium is used to store a control program, and when the control program is executed by a processor, it is used to implement the method for controlling the heating state of the atomizer core according to any one of claims 1 to 8.

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