Method and system for measuring content of atomizing agent in heat-not-burn slice and medium

Abstract

The invention discloses a method and system for measuring the content of an atomizing agent in a heat-not-burn slice and a medium, and relates to the technical field of microwave measurement. Comprising the following steps: inputting current microwave characterization parameters of a to-be-measured material in a microwave sensor into a model for measuring the content of the atomizing agent, and outputting the content of the atomizing agent in the to-be-measured material through the model for measuring the content of the atomizing agent. Wherein when the model is established, a microwave characterization parameter is determined according to a first microwave parameter of the microwave sensor when a sample material exists and a second microwave parameter of the microwave sensor in a vacant state; and establishing a model for measuring the content of the atomizing agent by applying a stoichiometric method according to the microwave characterization parameters and the content of the standard atomizing agent measured by adopting a laboratory standard method. By means of the model for measuring the content of the atomizing agent, online, real-time and rapid detection of the content of the atomizing agent is achieved, powerful data support is provided for real-time parameter adjustment of a production line, and it is ensured that the process quality standard of a product is effectively guaranteed.

Description

Technical Field

[0001] The invention relates to the field of microwave measurement technology, and in particular to a method, system and medium for measuring the content of an atomizer in a heat-not-burn slice. Background Art

[0002] As heat-not-burn cigarettes are gaining more and more popularity in the market, their demand is showing a significant and rapid growth trend. In order to cater to this rising consumer demand, the production scale and categories of heat-not-burn sheets are also expanding. This undoubtedly puts more stringent requirements on the production process and quality control of the sheets.

[0003] In current cigarette industry practices, offline measurement is usually used to determine the atomizer content in heat-not-burn sheets. Although this method has high measurement accuracy, the measurement cycle of a single sample is long, resulting in the inability to immediately feed back the measurement results to the production process, and it can only be used as a supplementary means of cigarette product quality management.

[0004] In view of this, in order to achieve real-time adjustment of relevant process parameters in the production process and more effectively ensure the stability and consistency of the quality of the heat-not-burn slices, it is particularly necessary to develop a real-time online measurement method. Summary of the invention

[0005] The object of the present invention is to provide a method, system and medium for measuring the atomizer content in a heat-not-burn sheet, so as to solve the technical problem of low efficiency in measuring the atomizer content in the heat-not-burn sheet.

[0006] In order to solve the above technical problems, the present invention provides a method for measuring the content of atomizer in a heat-not-burn sheet, comprising:

[0007] Obtain the current microwave characterization parameters of the material to be tested when it is in the microwave sensor;

[0008] Input the current microwave characterization parameters into a pre-established model for measuring the aerosol content; wherein establishing the model for measuring the aerosol content includes: obtaining a first microwave parameter of the microwave sensor when there is a sample material and a second microwave parameter of the microwave sensor when it is in an empty state; determining the microwave characterization parameters according to the first microwave parameter and the second microwave parameter; obtaining a standard aerosol content measured by a laboratory standard method; establishing the model for measuring the aerosol content according to the microwave characterization parameters and the standard aerosol content and applying a chemometric method; the microwave sensor is a group, and the microwave sensor includes a microwave resonant cavity; the microwave parameters include a resonant frequency and a resonant bandwidth, and the microwave characterization parameters are determined by a relative resonant frequency change and a relative bandwidth change;

[0009] The content of the atomizer in the material to be tested is outputted through the model for measuring the content of the atomizer.

[0010] Preferably, the microwave sensor comprises at least two microwave resonant cavities, and the resonance characteristics of different microwave resonant cavities are different.

[0011] Preferably, the microwave sensor comprises a first microwave resonant cavity and a second microwave resonant cavity, the resonant frequency of the first microwave resonant cavity is within the range of 0.5 Hz to 1.5 GHz; the resonant frequency of the second microwave resonant cavity is within the range of 2 Hz to 4 Hz.

[0012] Preferably, a frequency interval between the resonant frequency of the first microwave resonant cavity and the resonant frequency of the second microwave resonant cavity is at least greater than 3 octaves.

[0013] Preferably, there are two microwave sensors; the first microwave parameter of the microwave sensor when there is a sample material and the second microwave parameter of the microwave sensor when it is empty include:

[0014] Collecting a voltage signal when the sample material passes through the two microwave sensors, and determining a first microwave parameter of each microwave sensor according to the voltage signal; wherein the first microwave parameter includes a set of first resonant frequencies and a set of first resonant bandwidths;

[0015] Collecting voltage signals of the two microwave sensors when they are idle, and acquiring second microwave parameters of each microwave sensor according to the voltage signals; wherein the second microwave parameters include a second resonant frequency and a second resonant bandwidth;

[0016] Determining the microwave characterization parameter according to the first microwave parameter and the second microwave parameter comprises:

[0017] determining a first relative resonant frequency change based on the second resonant frequency and one of the first resonant frequencies, and determining a second relative resonant frequency change based on the second resonant frequency and another of the first resonant frequencies;

[0018] Determine a first relative resonant bandwidth change based on the second resonant bandwidth and one of the first resonant bandwidths, and determine a second relative resonant bandwidth change based on the second resonant bandwidth and another of the first resonant bandwidths;

[0019] The ratio of the first relative resonant bandwidth change to the first relative resonant frequency change, the ratio of the second relative resonant bandwidth change to the second relative resonant frequency change, the first relative resonant frequency change, and the second relative resonant frequency change are used as the microwave characterization parameters.

[0020] Preferably, the step of establishing the model for measuring the atomizer content by applying a chemometric method based on the microwave characterization parameters and the standard atomizer content comprises:

[0021] The microwave characterization parameters and the standard atomizer content are subjected to the least square method, and the chemometric method is applied to establish the model for measuring the atomizer content.

[0022] Preferably, establishing the model for measuring the aerosol content also includes:

[0023] Obtaining the real-time temperature of the sample material;

[0024] Correspondingly, the step of establishing the model for measuring the atomizer content by applying the chemometric method according to the microwave characterization parameters and the standard atomizer content includes:

[0025] The model for measuring the atomizer content is established according to the microwave characterization parameters and the standard atomizer content, combined with the real-time temperature of the sample material and using a chemometric method.

[0026] Preferably, the model for measuring the aerosol content is:

[0027] ;

[0028] in, , , , and are the coefficients in the model for measuring the aerosol content, To measure temperature in real time; Indicates the aerosol content.

[0029] In order to solve the above technical problems, the present invention also provides a system for measuring the content of atomizer in a heat-not-burn sheet, comprising:

[0030] Memory for storing computer programs;

[0031] A processor is used to implement the steps of the above-mentioned method for measuring the atomizer content in the heat-not-burn sheet when executing the computer program.

[0032] In order to solve the above technical problems, the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method for measuring the atomizer content in the heat-not-burn sheet are implemented.

[0033] The method for measuring the atomizer content in the heating non-combustion sheet provided by the present invention includes: obtaining the current microwave characterization parameters of the material to be tested when it is in the microwave sensor; inputting the current microwave characterization parameters into a pre-established model for measuring the atomizer content, and outputting the atomizer content in the material to be tested through the model for measuring the atomizer content. Among them, establishing a model for measuring the atomizer content includes: obtaining the first microwave parameter of the microwave sensor when there is a sample material and the second microwave parameter of the microwave sensor in an empty state; determining the microwave characterization parameter according to the first microwave parameter and the second microwave parameter; obtaining the standard atomizer content measured by the laboratory standard method; according to the microwave characterization parameter and the standard atomizer content, and applying the chemometric method to establish a model for measuring the atomizer content; the microwave sensor is a group, and the microwave sensor includes a microwave resonant cavity; the microwave parameters include a resonant frequency and a resonant bandwidth, and the microwave characterization parameters are determined by the relative resonant frequency change and the relative bandwidth change. It can be seen that the model for measuring the atomizer content realizes the online, real-time and rapid detection of the atomizer content in the material to be tested, which provides strong data support for the real-time parameter adjustment of the production line and ensures that the process quality standards of the product are effectively guaranteed.

[0034] In addition, the present invention also provides a system for measuring the atomizer content in a heat-not-burn sheet and a computer-readable storage medium, which have the same or corresponding technical features as the above-mentioned method for measuring the atomizer content in a heat-not-burn sheet, and have the same effects as above. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] FIG1 is a flow chart of a method for measuring the content of an atomizer in a heat-not-burn sheet provided by an embodiment of the present invention;

[0037] FIG2 is a flow chart of a method based on microwave technology combined with chemometrics provided by an embodiment of the present invention;

[0038] FIG3 is an output curve of a microwave resonant cavity provided in an embodiment of the present invention;

[0039] FIG4 is a schematic diagram of result data of online measurement after establishing a model according to an embodiment of the present invention;

[0040] FIG5 is a structural diagram of a system for measuring the atomizer content in a heat-not-burn sheet according to another embodiment of the present invention. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] The core of the present invention is to provide a method, system and medium for measuring the atomizer content in a heat-not-burn sheet, so as to solve the technical problem of low efficiency in measuring the atomizer content in the heat-not-burn sheet.

[0043] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. FIG1 is a flow chart of a method for measuring the content of an atomizer in a heat-not-burn sheet provided by an embodiment of the present invention. As shown in FIG1 , the method comprises:

[0044] S10: obtaining the current microwave characterization parameters of the material to be tested when it is in the microwave sensor;

[0045] S11: inputting the current microwave characterization parameters into a pre-established model for measuring aerosol content;

[0046] The model for measuring the aerosol content is established by: obtaining a first microwave parameter of a microwave sensor when there is a sample material and a second microwave parameter of the microwave sensor when the microwave sensor is in an empty state; determining a microwave characterization parameter according to the first microwave parameter and the second microwave parameter; obtaining a standard aerosol content measured by a laboratory standard method; establishing a model for measuring the aerosol content according to the microwave characterization parameter and the standard aerosol content and applying a chemometric method; the microwave sensor is a group, and the microwave sensor includes a microwave resonant cavity; the microwave parameters include a resonant frequency and a resonant bandwidth, and the microwave characterization parameter is determined by a relative resonant frequency change and a relative bandwidth change;

[0047] S12: Outputting the content of the atomizer in the material to be tested through a model for measuring the content of the atomizer.

[0048] There is no limit on the number of microwave sensors used, but in order to improve the accuracy of the measurement of the aerosol content, a group of microwave sensors is used. The microwave sensor includes at least two microwave resonant cavities, and the resonance characteristics of different microwave resonant cavities are different. The microwave resonant cavity works in the lowest resonance mode, which is convenient for forming a uniform and stable electric field in the measurement space. A preferred resonance mode is TM 010. For example, it includes two microwave resonant cavities, namely the first microwave resonant cavity and the second microwave resonant cavity. The frequency interval between the resonant frequency of the first microwave resonant cavity and the resonant frequency of the second microwave resonant cavity is at least greater than 3 octaves. For example, the resonant frequency of the first microwave resonant cavity is in the range of 0.5Hz to 1.5GHz; the resonant frequency of the second microwave resonant cavity is in the range of 2Hz to 4Hz. A preferred frequency combination is that one resonant cavity operates at about 1GHz and the other operates at about 4GHz. Such a configuration is conducive to distinguishing the relaxation frequency of the atomizer in the microwave electric field.

[0049] When there are two microwave sensors, the first microwave parameter of the microwave sensor when there is a sample material and the second microwave parameter of the microwave sensor when it is empty include:

[0050] Collecting voltage signals when the sample material passes through two microwave sensors, and determining first microwave parameters of each microwave sensor according to the voltage signals; wherein the first microwave parameters include a set of first resonant frequencies and a set of first resonant bandwidths;

[0051] Collecting voltage signals of the two microwave sensors when they are idle, and obtaining second microwave parameters of each microwave sensor according to the voltage signals; wherein the second microwave parameters include a second resonant frequency and a second resonant bandwidth;

[0052] Determining the microwave characterization parameter according to the first microwave parameter and the second microwave parameter includes:

[0053] Determine a first relative resonant frequency change based on the second resonant frequency and one of the first resonant frequencies, and determine a second relative resonant frequency change based on the second resonant frequency and another of the first resonant frequencies;

[0054] Determine a first relative resonant bandwidth change based on the second resonant bandwidth and one first resonant bandwidth, and determine a second relative resonant bandwidth change based on the second resonant bandwidth and another first resonant bandwidth;

[0055] The ratio of the first relative resonant bandwidth change to the first relative resonant frequency change, the ratio of the second relative resonant bandwidth change to the second relative resonant frequency change, the first relative resonant frequency change and the second relative resonant frequency change are used as microwave characterization parameters.

[0056] Based on microwave characterization parameters and standard aerosol content, the model for measuring aerosol content by applying chemometric method includes:

[0057] The least square method was used for microwave characterization parameters and standard aerosol content, and the chemometric method was applied to establish a model for measuring aerosol content.

[0058] The method for determining the actual content of the atomizer required by the chemometric method adopts the laboratory standard method or the measurement method required by the national standard. A preferred method adopts gas chromatography.

[0059] In addition, in order to achieve compensation for the microwave measurement results, the measurement method includes a temperature sensor for real-time measurement of the temperature during the production process of the heat-not-burn sheet for compensation of the microwave measurement results. A preferred sensor type is an infrared temperature measurement sensor. Therefore, the model established for measuring the atomizer content also includes:

[0060] Get the real-time temperature of sample materials;

[0061] Correspondingly, based on the microwave characterization parameters and the standard atomizer content, the model for measuring the atomizer content by applying the chemometric method includes:

[0062] According to the microwave characterization parameters and the standard atomizer content, a model for measuring the atomizer content is established by combining the real-time temperature of the sample material and applying the chemometric method.

[0063] The model used to measure the aerosol content is:

[0064] ;

[0065] in, , , , and are the coefficients in the model used to measure the aerosol content, To measure temperature in real time; Indicates the aerosol content.

[0066] After the model for measuring the atomizer content is established, the current microwave characterization parameters of the material to be tested are obtained when it is in the microwave sensor, and the current microwave characterization parameters are input into the model for measuring the atomizer content. The measurement result of the atomizer content of the material to be tested can be achieved through the model for measuring the atomizer content.

[0067] The present invention establishes a model for measuring the content of atomizers based on microwave technology combined with chemometrics, thereby improving the efficiency of measuring the content of atomizers and realizing online detection of the content of atomizers.

[0068] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below by taking two microwave resonant cavities as an example. FIG2 is a flow chart of a method based on microwave technology combined with stoichiometry provided by an embodiment of the present invention. As shown in FIG2 , the method based on microwave technology combined with stoichiometry as a whole specifically includes the following steps:

[0069] S13: Calculate cavity microwave parameters;

[0070] S14: Calculate the microwave parameters of the strip;

[0071] S15: establishing microwave characterization parameters;

[0072] S16: Measure the standard value of atomizer;

[0073] S17: Modeling using chemometric methods;

[0074] S18: Obtain microwave characterization parameters of the material to be tested and measure the atomizer content in combination with the model.

[0075] In practice, the method based on microwave technology combined with chemometric method to measure the atomizer content in the heat-not-burn sheet specifically includes the following process:

[0076] (1) Collect the output response of the sensor when it is idle, and calculate the resonant frequency and bandwidth of the sensor when it is idle.

[0077] Specifically, the output voltages of the two microwave resonant cavities when they are empty are collected respectively, and the resonant frequency and resonant bandwidth of the resonant cavities are calculated based on the voltage data, and these parameters are used as the reference parameters of the sensor;

[0078] (2) During the production process, the output responses of the heated non-combustible sheet after it passes through the microwave sensor continuously are collected, and the resonant frequency and bandwidth of the sensor when there is material are calculated.

[0079] Specifically, in the process of producing the heat-not-burn slice, the voltage output when the material passes through the sensor measurement range is collected respectively, and the resonant frequency and resonant bandwidth of the resonant cavity when the material is carried are calculated according to the voltage data;

[0080] (3) Based on the resonant frequencies and resonant bandwidths of the two measurements, the relative frequency offset and bandwidth offset are calculated, and the microwave characterization parameters are formed based on the offset data combination; that is, the relative resonant frequency change relative to the sensor in the idle state and and relative bandwidth changes and ;

[0081] (4) Sampling the heated non-combustion sheet used in microwave measurement and determining the atomizer content using laboratory methods to obtain accurate data on the atomizer content;

[0082] (5) Based on the principle of chemometrics, the microwave characterization parameters and the calibrated values ​​of the aerosol content were regressed using the least squares method, thus establishing a mathematical model for aerosol content detection;

[0083] (6) The mathematical model parameters are input into the measurement system, and the microwave characteristic parameters are collected and calculated during operation. The real-time content of the atomizer in the heat-not-burn sheet can be obtained by combining the model.

[0084] Figure 3 is an output curve of the microwave resonant cavity provided in an embodiment of the present invention. The output voltage of the microwave resonant cavity when it is empty is measured to obtain the output curve of the cavity (such as curve 201 and curve 203 in Figure 3); the output voltage of the microwave resonant cavity when it is loaded is measured during the production process to obtain the output voltage curve of the loaded material (such as curve 202 and curve 204 in Figure 3). The microwave sensor is composed of two microwave resonant cavities. The main microwave parameters of the resonant cavity include the resonant frequency and the resonant bandwidth. According to the microwave resonance perturbation principle, the resonant frequency and the resonant bandwidth are the main microwave parameters that characterize the dielectric constant of the material, and the dielectric constant of the material characterizes the type of the material. Therefore, the resonant frequency and the resonant bandwidth can effectively characterize the dielectric constant of the material, thereby realizing the accurate determination of the atomizer content. In the process of solving the microwave characteristic parameters of the microwave sensor, the output voltage of the microwave resonant cavity when it is empty is first measured to obtain the output curve of the cavity, and the microwave characteristic parameters of the resonant cavity when it is empty are calculated based on this voltage curve. , , and Then, during the production process, the output voltage of the microwave resonant cavity is measured when the material is brought in, and the output voltage curve of the material is obtained, which is used to calculate the microwave characteristic parameters of the resonant cavity. , , and The relative frequency offset and the relative bandwidth offset are calculated based on the two measurement results, and the combination thereof forms the microwave characterization parameters that characterize the atomizer content.

[0085] According to the principle of microwave resonance perturbation method to determine the dielectric constant of materials, the measured frequency offset and bandwidth offset are combined to form microwave characteristic characterization parameters. , , and Table 1 shows the relative frequency offset and relative bandwidth offset of two microwave sensors with materials measured according to the method of the present invention.

[0086] Table 1 Relative frequency offset and relative bandwidth offset

[0087]

[0088] FIG4 is a schematic diagram of the result data of online measurement after establishing a model provided by an embodiment of the present invention. In FIG4, the red line indicates that the microwave method detection result is equal to the standard method (such as gas chromatography (GC), and deviation from this line indicates an error. The horizontal axis is the atomizer content measured by the laboratory standard method, and the vertical axis is the result of the same material sample measured by the microwave method.

[0089] The microwave technology-based measurement method provided by the present invention is used to measure the atomizer content in the heat-not-burn sheet in real time. The method is specially designed for the production process of the heat-not-burn sheet, and solves the problem of the lack of effective online detection means of atomizers in the relevant production links of the tobacco industry.

[0090] In the above embodiments, the method for measuring the atomizer content in the heat-not-burn sheet is described in detail, and the present invention also provides an embodiment corresponding to the system for measuring the atomizer content in the heat-not-burn sheet. It should be noted that the present invention describes the embodiment of the device part from the perspective of hardware.

[0091] FIG5 is a structural diagram of a system for measuring the atomizer content in a heat-not-burn sheet provided by another embodiment of the present invention. Based on the hardware perspective, as shown in FIG5 , the system for measuring the atomizer content in a heat-not-burn sheet includes:

[0092] A memory 20, for storing computer programs;

[0093] The processor 21 is used to implement the steps of the method for measuring the atomizer content in the heat-not-burn sheet as mentioned in the above embodiment when executing the computer program.

[0094] Among them, the processor 21 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 21 can be implemented in at least one hardware form of a digital signal processor (DSP), a field-programmable gate array (FPGA), and a programmable logic array (PLA). The processor 21 may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a central processing unit (CPU); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor 21 may be integrated with a graphics processing unit (GPU), which is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor 21 may also include an artificial intelligence (AI) processor, which is used to process computing operations related to machine learning.

[0095] The memory 20 may include one or more computer-readable storage media, which may be non-transitory. The memory 20 may also include a high-speed random access memory, and a non-volatile memory, such as one or more disk storage devices, flash memory storage devices. In this embodiment, the memory 20 is at least used to store the following computer program 201, wherein, after the computer program is loaded and executed by the processor 21, the relevant steps of the method for measuring the atomizer content in the heating non-burning sheet disclosed in any of the aforementioned embodiments can be implemented. In addition, the resources stored in the memory 20 may also include an operating system 202 and data 203, etc., and the storage method may be temporary storage or permanent storage. Among them, the operating system 202 may include Windows, Unix, Linux, etc. The data 203 may include, but is not limited to, the data involved in the above-mentioned method for measuring the atomizer content in the heating non-burning sheet.

[0096] In some embodiments, the system for measuring the atomizer content in the heat-not-burn sheet may further include a display screen 22 , an input / output interface 23 , a communication interface 24 , a power supply 25 , and a communication bus 26 .

[0097] Those skilled in the art will appreciate that the structure shown in FIG. 5 does not limit the system for measuring the atomizer content in the heat-not-burn sheet and may include more or fewer components than those shown in the figure.

[0098] The system for measuring the atomizer content in the heat-not-burn sheet provided in the embodiment of the present invention includes a memory and a processor. When the processor executes the program stored in the memory, it can implement the following method: the method for measuring the atomizer content in the heat-not-burn sheet has the same effect as above.

[0099] Finally, the present invention also provides an embodiment corresponding to a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps recorded in the above method embodiment are implemented.

[0100] It is understandable that if the method in the above embodiment is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc. Various media that can store program codes.

[0101] The computer-readable storage medium provided by the present invention includes the above-mentioned method for measuring the content of atomizer in the heat-not-burn sheet, and the effect is the same as above.

[0102] The above is a detailed introduction to the method, system and medium for measuring the atomizer content in the heat-not-burn sheet provided by the present invention. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referenced to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the present invention.

[0103] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article 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, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

Claims

1. A method for measuring the atomizer content in a heat-not-burn sheet, characterized in that: include: Obtain the current microwave characterization parameters of the material to be tested when it is in the microwave sensor; Input the current microwave characterization parameters into a pre-established model for measuring the aerosol content; wherein establishing the model for measuring the aerosol content includes: obtaining a first microwave parameter of the microwave sensor when there is a sample material and a second microwave parameter of the microwave sensor when it is in an empty state; determining the microwave characterization parameters according to the first microwave parameter and the second microwave parameter; obtaining a standard aerosol content measured by a laboratory standard method; establishing the model for measuring the aerosol content according to the microwave characterization parameters and the standard aerosol content and applying a chemometric method; the microwave sensor is a group, and the microwave sensor includes a microwave resonant cavity; the microwave parameters include a resonant frequency and a resonant bandwidth, and the microwave characterization parameters are determined by a relative resonant frequency change and a relative bandwidth change; The content of the atomizer in the material to be tested is outputted through the model for measuring the content of the atomizer.

2. The method for measuring the atomizer content in the heat-not-burn sheet according to claim 1, characterized in that: The microwave sensor includes at least two microwave resonant cavities, and the resonance characteristics of different microwave resonant cavities are different.

3. The method for measuring the atomizer content in the heat-not-burn sheet according to claim 2, characterized in that: The microwave sensor comprises a first microwave resonant cavity and a second microwave resonant cavity. The resonant frequency of the first microwave resonant cavity is within the range of 0.5 Hz to 1.5 GHz; the resonant frequency of the second microwave resonant cavity is within the range of 2 Hz to 4 Hz.

4. The method for measuring the atomizer content in the heat-not-burn sheet according to claim 3, characterized in that: The frequency interval between the resonant frequency of the first microwave resonant cavity and the resonant frequency of the second microwave resonant cavity is at least greater than 3 octaves.

5. The method for measuring the atomizer content in the heat-not-burn sheet according to claim 2, characterized in that: There are two microwave sensors; the first microwave parameter of the microwave sensor when there is a sample material and the second microwave parameter of the microwave sensor when it is empty include: Collecting a voltage signal when the sample material passes through the two microwave sensors, and determining a first microwave parameter of each microwave sensor according to the voltage signal; wherein the first microwave parameter includes a set of first resonant frequencies and a set of first resonant bandwidths; Collecting voltage signals of the two microwave sensors when they are idle, and acquiring second microwave parameters of each microwave sensor according to the voltage signals; wherein the second microwave parameters include a second resonant frequency and a second resonant bandwidth; Determining the microwave characterization parameter according to the first microwave parameter and the second microwave parameter comprises: determining a first relative resonant frequency change based on the second resonant frequency and one of the first resonant frequencies, and determining a second relative resonant frequency change based on the second resonant frequency and another of the first resonant frequencies; Determine a first relative resonant bandwidth change based on the second resonant bandwidth and one of the first resonant bandwidths, and determine a second relative resonant bandwidth change based on the second resonant bandwidth and another of the first resonant bandwidths; The ratio of the first relative resonant bandwidth change to the first relative resonant frequency change, the ratio of the second relative resonant bandwidth change to the second relative resonant frequency change, the first relative resonant frequency change, and the second relative resonant frequency change are used as the microwave characterization parameters.

6. The method for measuring the atomizer content in the heat-not-burn sheet according to any one of claims 1 to 5, characterized in that: The method of establishing the model for measuring the atomizer content by applying the chemometric method according to the microwave characterization parameters and the standard atomizer content comprises: The microwave characterization parameters and the standard atomizer content are subjected to the least square method, and the chemometric method is applied to establish the model for measuring the atomizer content.

7. The method for measuring the atomizer content in the heat-not-burn sheet according to claim 6, characterized in that: The model for measuring the aerosol content also includes: Obtaining the real-time temperature of the sample material; Correspondingly, the step of establishing the model for measuring the atomizer content by applying the chemometric method according to the microwave characterization parameters and the standard atomizer content includes: The model for measuring the atomizer content is established according to the microwave characterization parameters and the standard atomizer content, combined with the real-time temperature of the sample material and using a chemometric method.

8. The method for measuring the atomizer content in the heat-not-burn sheet according to claim 7, characterized in that: The model used to measure the aerosol content is: ； in, , , , and are the coefficients in the model for measuring the aerosol content, To measure temperature in real time; Indicates the aerosol content.

9. A system for measuring the atomizer content in a heat-not-burn sheet, characterized in that: include: Memory for storing computer programs; A processor, configured to implement the steps of the method for measuring the atomizer content in the heat-not-burn sheet as claimed in any one of claims 1 to 8 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for measuring the atomizer content in the heat-not-burn sheet according to any one of claims 1 to 8 are implemented.

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