Method for determining relationship between temperature and heating element characteristics in aerosol generating device

Abstract

The invention discloses a method for determining the relation between the temperature and the characteristics of a heating element in an aerosol generating device, and the aerosol generating device comprises the heating element which is used for heating a heating aerosol generating substrate to generate aerosol. The determining method comprises the steps that temperatures corresponding to N test points of a heating body and heating body characteristics corresponding to the temperatures are obtained, the N test points correspond to different temperature points in the temperature changing process of the heating body, and N is an integer larger than 2; respectively carrying out linear fitting on the temperature between two adjacent test points and the characteristics of the heating element to obtain a linear fitting relationship between the temperature of N-1 sections and the characteristics of the heating element; and determining the relationship between the temperature in the aerosol generating device and the characteristics of the heating body according to the linear fitting relationship between the N-1-section temperature and the characteristics of the heating body. And the relationship between the temperature and the heating body characteristic in the aerosol generating device can be accurately reflected. The invention further provides a method for determining the relation between the collected temperature and the highest temperature.

Description

Technical Field

[0001] The invention belongs to the field of aerosol generating devices, and relates to a method for determining the relationship between temperature and heating element characteristics in an aerosol generating device and a method for determining the relationship between a collected temperature and a maximum temperature in an aerosol generating device. Background Art

[0002] The aerosol generating device can be a heat-not-burn smoking device, through which the user obtains aerosol. The aerosol generating device can also be a smoking device simulation product in the R&D and testing stage. The R&D personnel adjust the relevant parameters of the smoking device simulation product to explore the amount of aerosol generated for laboratory experiments.

[0003] The aerosol generating device needs to obtain the correspondence between temperature and heating element characteristics, such as the correspondence between temperature and magnetic permeability, or the correspondence between temperature and resistance. It is also necessary to obtain the correspondence between the maximum temperature and the collection temperature. After determining the correspondence between temperature and heating element characteristics, only the temperature needs to be measured to obtain the corresponding value of the heating element characteristics. It is meaningful to accurately determine the correspondence between temperature and heating element characteristics in an aerosol generating device.

[0004] In existing aerosol generating devices, in order to simplify the determination process of temperature and magnetic permeability, the relationship between temperature and magnetic permeability is usually approximated as a straight line. The actual relationship between temperature and magnetic permeability is not linear, but a curve with a certain curvature. The curvature of this nonlinear relationship is different in different temperature ranges of the receptor. Since the relationship between magnetic permeability and temperature is not linear, simplifying the relationship between temperature and magnetic permeability into a linear relationship will reduce the accuracy of the corresponding relationship between temperature and magnetic permeability in different temperature ranges, and cannot more truly and accurately reflect the relationship between magnetic permeability and temperature.

[0005] The linear relationship used to determine the relationship between the temperature of the aerosol generating device and the characteristics of the heating element, the collection temperature and the maximum temperature is not accurate enough. Summary of the invention

[0006] The object of the present invention is to provide a method for determining the relationship between temperature and heating element characteristics in an aerosol generating device and a method for determining the relationship between collection temperature and maximum temperature in an aerosol generating device, so as to solve the above technical problems.

[0007] In a first aspect, the present invention provides a method for determining the relationship between temperature and heating element characteristics in an aerosol generating device. The aerosol generating device includes a heating element, which is used to heat an aerosol generating matrix to generate an aerosol. The determination method includes: obtaining the temperature corresponding to the heating element at N test points and the heating element characteristics corresponding to each of the temperatures, the N test points corresponding to different temperature points in the temperature change process of the heating element, wherein N is an integer greater than 2; linearly fitting the temperature and heating element characteristics between two adjacent test points, respectively, to obtain a linear fitting relationship between N-1 segments of temperature and heating element characteristics; and determining the relationship between temperature and heating element characteristics in the aerosol generating device based on the linear fitting relationship between N-1 segments of temperature and heating element characteristics.

[0008] By adopting the above technical scheme, by obtaining the temperature and heating element characteristics corresponding to N different test points, a linear fitting relationship is performed on the temperature and heating element characteristics of two adjacent test points respectively, and a linear fitting relationship of multiple temperature segments and heating element characteristics is obtained, thereby determining the relationship between the temperature and heating element characteristics in the aerosol generating device, improving the accuracy of the relationship between the temperature and heating element characteristics in the aerosol generating device, accurately understanding the heating characteristics of the heating element, and accurately controlling the amount of aerosol generated.

[0009] According to another specific embodiment of the present invention, the temperature and the heating element characteristics between two adjacent test points are linearly fitted respectively to obtain the linear fitting relationship between N-1 sections of temperature and heating element characteristics, including: obtaining the linear fitting relationship between N-1 sections of temperature and heating element characteristics by the orthogonal internal difference method according to the temperature and the heating element characteristics of the heating element at two adjacent test points.

[0010] According to another specific embodiment of the present invention, the temperature and the heating element characteristics between two adjacent test points are linearly fitted respectively to obtain the linear fitting relationship of N-1 sections of temperature and heating element characteristics, including: selecting multiple sampling points between two adjacent test points, obtaining the temperatures corresponding to the multiple sampling points of the heating element and the heating element characteristics corresponding to each temperature, the heating element characteristics corresponding to the multiple sampling points at different temperature points in the process of temperature change between the two adjacent test points, and obtaining the linear fitting relationship of N-1 sections of temperature and heating element characteristics by least squares fitting according to the temperatures and heating element characteristics corresponding to the multiple sampling points between the two adjacent test points and the two test points.

[0011] According to another specific embodiment of the present invention, the temperature is the highest temperature of the heating element at different test locations at the same time.

[0012] According to another specific embodiment of the present invention, the characteristic of the heating element is the magnetic permeability of the receptor, the magnetic permeability is determined according to the magnetic permeability acquisition circuit, and the magnetic permeability acquisition circuit includes: an induction coil, which is used to generate a changing magnetic field in a heating mode to heat the receptor; an oscillation module, which is used to provide a changing current to the induction coil in the heating mode; an inductance acquisition module, which is used to acquire the inductance of the induction coil in a test mode; a first switch element, wherein a first end of the first switch element is connected to a first end of the induction coil, a second end of the first switch element is connected to a first end of the oscillation module in the heating mode, and a second end of the first switch element is connected to a first end of the inductance acquisition module in the test mode; A second switch element, wherein the first end of the second switch element is connected to the second end of the induction coil, the second end of the second switch element is connected to the second end of the oscillation module in a heating mode, and the second end of the second switch element is connected to the second end of the inductance acquisition module in a test mode; a processing module, connected to the control end of the first switch element and the control end of the second switch element, configured to control the first switch element and the second switch element to be respectively conducted with the first end and the second end of the oscillation module in the heating mode, and the first switch element and the second switch element to be respectively conducted with the first end and the second end of the inductance acquisition module in the test mode, and determine the magnetic permeability according to the inductance of the induction coil.

[0013] According to another specific embodiment of the present invention, the characteristic of the heating element is the resistance of the heating element, and the resistance is determined by a heating element resistance acquisition circuit. The heating element resistance acquisition circuit includes: a heating element; a reference unit having a first preset resistance; and a processing module configured to obtain the voltage of the heating element and the voltage of the reference unit, and determine the resistance of the heating element based on the voltage of the heating element, the voltage of the reference unit and the first preset resistance.

[0014] According to another specific embodiment of the present invention, the heating element resistance acquisition circuit further includes: an operational amplifier, which is used to amplify the voltage of the reference unit to obtain a voltage amplification signal, and transmit the voltage amplification signal to the processing module.

[0015] According to another specific embodiment of the present invention, the heating element resistance acquisition circuit also includes: an electrical connection end; a third switch element, a first end of the third switch element is connected to the first end of the heating element, a second end of the third switch element is connected to the electrical connection end, and a control end of the third switch element is connected to the processing module; a fourth switch element, a first end of the fourth switch element is connected to the first end of the reference unit, a second end of the fourth switch element is connected to the electrical connection end, and a control end of the fourth switch element is connected to the processing module; the first end of the heating element is connected to the second end of the reference unit; the processing module is used to control the conduction and closing of the third switch element and the fourth switch element; the third switch element is used to be turned on in the heating mode, and in the heating mode, the current directly flows through the heating element and the third switch element, and the heating element is heated; the fourth switch element is used to be turned on in the test mode, and in the test mode, the current flows through the heating element, the reference unit and the fourth switch element, and the processing module determines the resistance of the heating element according to the voltage of the heating element, the voltage of the reference unit and the first preset resistance in the test mode.

[0016] In a second aspect, the present invention also provides a device for determining the relationship between temperature and heating element characteristics in an aerosol generating device, comprising: a temperature and heating element characteristics data acquisition module, used to obtain the temperatures corresponding to the heating element of the aerosol generating device at N test points and the heating element characteristics corresponding to each temperature, the N test points corresponding to different temperature points in the temperature change process of the heating element, wherein N is an integer greater than 2; a temperature and heating element characteristics linear fitting module, used to linearly fit the temperature and heating element characteristics between two adjacent test points, respectively, to obtain the linear fitting relationship between N-1 segments of temperature and heating element characteristics; a temperature and heating element characteristics corresponding relationship determination module, used to determine the relationship between temperature and heating element characteristics in the aerosol generating device based on the linear fitting relationship between N-1 segments of temperature and heating element characteristics.

[0017] In a third aspect, the present invention also provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for determining the relationship between the temperature and the characteristics of the heating element in the above-mentioned aerosol generating device is implemented.

[0018] In a fourth aspect, the present invention further provides a method for determining the relationship between a collection temperature and a maximum temperature in an aerosol generating device, wherein the aerosol generating device comprises a heating element and a temperature sensor, the heating element being used to heat a heated aerosol generating substrate to generate an aerosol, the heating element having a maximum temperature and a collection temperature, the collection temperature being the temperature of the heating element at a fixed position, the collection temperature being collected by the temperature sensor, the maximum temperature being the maximum temperature in different test parts of the heating element at the same time, the determination method comprising: obtaining the corresponding collection temperatures of the heating element at N test points and the maximum temperature of the heating element corresponding to each collection temperature, the collection temperatures of the heating element corresponding to the N test points Different temperature points in the temperature change process are collected, wherein N is an integer greater than 2; the corresponding collection temperature between two adjacent test points and the maximum temperature are linearly fitted respectively to obtain a linear fitting relationship between N-1 sections of collection temperature and the maximum temperature; according to the linear fitting relationship between the N-1 sections of collection temperature and the maximum temperature, the relationship between the collection temperature and the maximum temperature in the aerosol generating device is determined; the temperature sensor includes a temperature collection circuit, and the temperature collection circuit includes: a temperature measuring element; a processing module, which is configured to obtain a voltage of the temperature measuring element, obtain the temperature of the temperature measuring element according to the voltage of the temperature measuring element, and determine the collection temperature according to the temperature of the temperature measuring element.

[0019] By adopting the above technical scheme, the temperature of the temperature measuring element is determined by obtaining the voltage of the temperature measuring element, and then the sampling temperature of the fixed position of the heating element is determined. By obtaining the sampling temperature and the maximum temperature corresponding to N different test points, the sampling temperature and the maximum temperature of two adjacent test points are linearly fitted, and the linear fitting relationship between multiple sampling temperatures and the maximum temperature is obtained. Then, the relationship between the sampling temperature and the maximum temperature in the aerosol generating device is determined. The corresponding relationship between the sampling temperature and the maximum temperature of the heating element can be accurately obtained. The maximum temperature of the heating element can be accurately determined by the sampling temperature of the temperature sensor on the heating element.

[0020] According to another specific embodiment of the present invention, the temperature measuring element is a resistance temperature detector, and the temperature acquisition circuit also includes: a voltage divider unit having a second preset resistance; a processing module configured to obtain the voltage of the voltage divider unit, and determine the temperature of the resistance temperature detector based on the voltage of the resistance temperature detector, the voltage of the voltage divider unit and the second preset resistance.

[0021] According to another specific embodiment of the present invention, the temperature measuring element is a resistance temperature detector, and the temperature acquisition circuit also includes: a constant current output module, which is used to output a constant current to the resistance temperature detector; and a processing module, which is configured to determine the temperature of the resistance temperature detector based on the voltage and constant current of the resistance temperature detector.

[0022] According to another specific embodiment of the present invention, the temperature measuring element is a thermocouple, and the thermocouple has a test end and a cold end. The temperature acquisition circuit also includes: a processing module, which is configured to obtain the voltage of the test end and the voltage of the cold end of the thermocouple, and determine the temperature of the thermocouple according to the voltage of the test end and the voltage of the cold end of the thermocouple.

[0023] According to another specific embodiment of the present invention, linear fitting is performed on the corresponding collection temperature and the maximum temperature between two adjacent test points to obtain the linear fitting relationship between N-1 sections of collection temperature and the maximum temperature, including: obtaining the linear fitting relationship between N-1 sections of collection temperature and the maximum temperature by an orthogonal internal difference method according to the collection temperature and the maximum temperature of the sensor at two adjacent test points.

[0024] According to another specific embodiment of the present invention, the corresponding collection temperature and the maximum temperature between two adjacent test points are linearly fitted respectively to obtain the linear fitting relationship between N-1 sections of collection temperature and the maximum temperature, including: selecting multiple sampling points between two adjacent collection temperatures, obtaining the collection temperatures corresponding to the multiple sampling points of the heating element and the maximum temperature of the heating element corresponding to each collection temperature, the multiple sampling points correspond to different temperature points of the heating element in the process of changing the sampling temperature between two adjacent test points, and according to the collection temperatures and the maximum temperatures corresponding to the multiple sampling points between the two adjacent test points and the two test points, the linear fitting relationship between N-1 sections of collection temperature and the maximum temperature is obtained by least squares fitting.

[0025] In a fifth aspect, the present invention also provides a device for determining the relationship between the collected temperature and the maximum temperature in an aerosol generating device, comprising: a collection temperature and maximum temperature data acquisition module, used to obtain the corresponding collection temperatures of the heating element at N test points and the maximum temperature of the heating element corresponding to each collection temperature, the N test points corresponding to different temperature points in the collection temperature change process of the heating element, wherein N is an integer greater than 2; a collection temperature and maximum temperature linear fitting module, used to linearly fit the corresponding collection temperatures and maximum temperatures between two adjacent test points, respectively, to obtain the linear fitting relationship between the collection temperature and the maximum temperature of N-1 segments; a collection temperature and maximum temperature correspondence determination module, used to determine the relationship between the collection temperature and the maximum temperature in the aerosol generating device according to the linear fitting relationship between the collection temperature and the maximum temperature of N-1 segments.

[0026] In a sixth aspect, the present invention also provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements a method for determining the relationship between the collected temperature and the maximum temperature in the above-mentioned aerosol generating device when executing the computer program. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1Flow chart showing the method for determining the relationship between temperature and magnetic permeability in an aerosol generating device according to an embodiment of the present invention Figure 1 ;

[0028] Figure 2 Data showing the relationship between temperature and magnetic permeability in an aerosol generating device according to an embodiment of the present invention Figure 1 ;

[0029] Figure 3 Flow chart showing the method for determining the relationship between temperature and magnetic permeability in an aerosol generating device according to an embodiment of the present invention Figure 2 ;

[0030] Figure 4 Flow chart showing the method for determining the relationship between temperature and magnetic permeability in an aerosol generating device according to an embodiment of the present invention Figure 3 ;

[0031] Figure 5 A circuit diagram showing a method for determining the relationship between temperature and magnetic permeability in an aerosol generating device according to an embodiment of the present invention;

[0032] Figure 6 Flow chart showing the method for determining the relationship between temperature and resistance in an aerosol generating device according to an embodiment of the present invention Figure 1 ;

[0033] Figure 7 Data showing the relationship between temperature and resistance in an aerosol generating device according to an embodiment of the present invention Figure 1 ;

[0034] Figure 8 Circuit diagram showing a method for determining the relationship between temperature and resistance in an aerosol generating device according to an embodiment of the present invention Figure 1 ;

[0035] Fig. 9 Circuit diagram showing a method for determining the relationship between temperature and resistance in an aerosol generating device according to an embodiment of the present invention Figure 2 ;

[0036] Fig.10 Flow chart showing the method for determining the relationship between temperature and resistance in an aerosol generating device according to an embodiment of the present invention Figure 2 ;

[0037] Fig.11 Flow chart showing the method for determining the relationship between temperature and resistance in an aerosol generating device according to an embodiment of the present invention Figure 3 ;

[0038] Fig.12 Flow chart showing the method for determining the relationship between the collected temperature and the maximum temperature in the aerosol generating device according to the embodiment of the present invention Figure 1 ;

[0039] Fig.13 Circuit diagram showing a method for determining the relationship between the collected temperature and the maximum temperature in an aerosol generating device according to an embodiment of the present invention Figure 1 ;

[0040] Fig.14 Circuit diagram showing a method for determining the relationship between the collected temperature and the maximum temperature in an aerosol generating device according to an embodiment of the present invention Figure 2 ;

[0041] Fig.15 Circuit diagram showing a method for determining the relationship between the collected temperature and the maximum temperature in an aerosol generating device according to an embodiment of the present invention Figure 3 ;

[0042] Fig.16 Flow chart showing the method for determining the relationship between the collected temperature and the maximum temperature in the aerosol generating device according to the embodiment of the present invention Figure 2 ;

[0043] Fig.17 Flow chart showing the method for determining the relationship between the collected temperature and the maximum temperature in the aerosol generating device according to the embodiment of the present invention Figure 3

[0044] Fig.18 Data showing the relationship between temperature and magnetic permeability in an aerosol generating device according to an embodiment of the present invention Figure 2 ;

[0045] Fig.19 Data showing the relationship between temperature and resistance in an aerosol generating device according to an embodiment of the present invention Figure 2 ;

[0046] Fig. 20 Schematic diagram showing the structure of a device for determining the relationship between temperature and magnetic permeability in an aerosol generating device according to an embodiment of the present invention Figure 1 ;

[0047] Fig.21 A schematic diagram of the structure of an electronic device in an embodiment of the present invention is shown;

[0048] Fig. 22 Schematic diagram showing the structure of a device for determining the relationship between temperature and magnetic permeability in an aerosol generating device according to an embodiment of the present invention Figure 2 ;

[0049] Fig.23 Schematic diagram showing the structure of a device for determining the relationship between temperature and magnetic permeability in an aerosol generating device according to an embodiment of the present invention Figure 3 ;

[0050] Fig.24 Schematic diagram showing the structure of a device for determining the relationship between temperature and resistance in an aerosol generating device according to an embodiment of the present invention Figure 1 ;

[0051] Fig.25 Schematic diagram showing the structure of a device for determining the relationship between temperature and resistance in an aerosol generating device according to an embodiment of the present invention Figure 2 ;

[0052] Fig.26 Schematic diagram showing the structure of a device for determining the relationship between temperature and resistance in an aerosol generating device according to an embodiment of the present invention Figure 3 ; Fig. 27 Schematic diagram showing the structure of a device for determining the relationship between the collected temperature and the maximum temperature in an aerosol generating device according to an embodiment of the present invention Figure 1 ;

[0053] Fig.28 Schematic diagram showing the structure of a device for determining the relationship between the collected temperature and the maximum temperature in an aerosol generating device according to an embodiment of the present invention Figure 2 ;

[0054] Fig.29 Schematic diagram showing the structure of a device for determining the relationship between the collected temperature and the maximum temperature in an aerosol generating device according to an embodiment of the present invention Figure 3 ;

[0055] Fig.30 Flow chart showing the method for determining the relationship between temperature and heating element characteristics in an aerosol generating device according to an embodiment of the present invention Figure 1 ;

[0056] Fig.31 Flow chart showing the method for determining the relationship between temperature and heating element characteristics in an aerosol generating device according to an embodiment of the present invention Figure 2 ;

[0057] Fig.32 Flow chart showing the method for determining the relationship between temperature and heating element characteristics in an aerosol generating device according to an embodiment of the present invention Figure 3 ;

[0058] Fig.33 Schematic diagram showing the structure of a device for determining the relationship between temperature and heating element characteristics in an aerosol generating device according to an embodiment of the present invention Figure 1 ;

[0059] Fig.34 Schematic diagram showing the structure of a device for determining the relationship between temperature and heating element characteristics in an aerosol generating device according to an embodiment of the present invention Figure 2 ;

[0060] Fig.35 Schematic diagram showing the structure of a device for determining the relationship between temperature and heating element characteristics in an aerosol generating device according to an embodiment of the present invention Figure 3 . DETAILED DESCRIPTION

[0061] The following specific embodiments illustrate the implementation of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation. On the contrary, the purpose of introducing the invention in conjunction with the implementation is to cover other options or modifications that may extend based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0062] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0063] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0064] First, as Fig.30 As shown, the present invention provides a method for determining the relationship between temperature and heating element characteristics in an aerosol generating device, the aerosol generating device includes a heating element, the heating element is used to heat an aerosol generating matrix to generate an aerosol, the determination method includes: S01: obtaining the temperature corresponding to the heating element at N test points and the heating element characteristics corresponding to each temperature, the N test points correspond to different temperature points in the temperature change process of the heating element, wherein N is an integer greater than 2; S02: linearly fitting the temperature and heating element characteristics between two adjacent test points respectively, and obtaining the linear fitting relationship between N-1 sections of temperature and heating element characteristics; S03: determining the relationship between the temperature and heating element characteristics in the aerosol generating device according to the linear fitting relationship between the N-1 sections of temperature and heating element characteristics.

[0065] In some embodiments, when the heating method of the aerosol generating device is electromagnetic heating, the heating element is a receptor, and the heating characteristic is the magnetic permeability of the receptor.

[0066] In some embodiments, when the heating method of the aerosol generating device is resistive heating, the heating characteristic is the resistance of the heating element.

[0067] By adopting the above technical scheme, by obtaining the temperature and heating element characteristics corresponding to N different test points, a linear fitting relationship is performed on the temperature and heating element characteristics of two adjacent test points respectively, and a linear fitting relationship of multiple temperature segments and heating element characteristics is obtained, thereby determining the relationship between the temperature and heating element characteristics in the aerosol generating device, improving the accuracy of the relationship between the temperature and heating element characteristics in the aerosol generating device, accurately understanding the heating characteristics of the heating element, and accurately controlling the amount of aerosol generated.

[0068] like Figure 1 As shown, the present invention provides a method for determining the relationship between temperature and magnetic permeability in an aerosol generating device, wherein the aerosol generating device includes a receptor, and the receptor is used to heat a heated aerosol generating matrix to generate an aerosol. The relationship between temperature and magnetic permeability in the aerosol generating device is the relationship between the temperature of the receptor in the aerosol generating device and the magnetic permeability of the receptor. The method for determining the relationship between temperature and magnetic permeability in the aerosol generating device includes: S1: obtaining the temperature corresponding to the receptor at N test points and the magnetic permeability of the receptor corresponding to each temperature, wherein the N test points correspond to different temperature points during the temperature change process of the receptor, wherein N is an integer greater than 2. The magnetic permeability μ of the receptor represents the responsiveness of the receptor material to the magnetic field, and refers to the ratio of the magnetic induction intensity of the receptor to the magnetic field intensity of the magnetic field, and the calculation method is shown in Formula 1:

[0069]

[0070] μ represents magnetic permeability, B represents the magnetic induction intensity of the receptor, and H represents the magnetic field intensity of the magnetic field. Magnetic permeability can be absolute magnetic permeability or relative magnetic permeability. Relative magnetic permeability μ r is the absolute magnetic permeability μ of the material a The ratio of the absolute magnetic permeability μ0 to the vacuum magnetic permeability μ0 indicates the magnetic strength of the material relative to the vacuum. a and relative magnetic permeability μ r The relationship is shown in Formula 2:

[0071]

[0072] Among them, μ r Relative magnetic permeability, μ a Represents absolute magnetic permeability, μ b Represents vacuum magnetic permeability, vacuum magnetic permeability μ b =4π×10 -7 H / m.

[0073] S2: Linearly fit the temperature and magnetic permeability between two adjacent test points to obtain the linear fitting relationship between N-1 segments of temperature and magnetic permeability.

[0074] In some embodiments, Figure 2As shown, a curve of the corresponding relationship between temperature and relative magnetic permeability is obtained, N different test points are selected on the curve, the curve of the corresponding relationship between temperature and relative magnetic permeability is divided into N-1 segments, and linear fitting is performed on the relationship between temperature and relative magnetic permeability in N-1 segments respectively, that is, the linear relationship between temperature and the corresponding relative magnetic permeability is obtained. Through the above method, the curve of the corresponding relationship between temperature and relative magnetic permeability is divided into N-1 segments, and each segment has a corresponding relationship between temperature and relative magnetic permeability.

[0075] In some embodiments, Fig.18 As shown, the temperature corresponding to N test points is directly set, and the aerosol generating device is heated. When the temperature of the sensor reaches the temperature of the corresponding preset test point, the magnetic permeability corresponding to the test point is tested to obtain N test points, which are M0 (μ0, T0), M1 (μ1, T1), ..., M N-1 (μ N-1 , T N-1 ). Among them, T N-1 Indicates the temperature of the sensor corresponding to the Nth test point, μ N-1 represents the magnetic permeability of the sensor corresponding to the Nth test point. Linear fitting is performed on the relationship between N-1 temperature and magnetic permeability. Specifically, we only need to obtain Fig.18 The temperatures and corresponding magnetic permeabilities of the five test points M0 (μ0, T0), M1 (μ1, T1), ..., M4 (μ4, T4) in the embodiment are measured. The method of this embodiment has fewer sampling points and is more convenient and quick.

[0076] In some embodiments, by setting the temperatures corresponding to N test points, the aerosol generating device is heated, and when the actual temperature of the heating element is higher than the temperature of the preset test point, the aerosol generating device is cooled to the temperature of the test point. When the actual temperature of the heating element is lower than the temperature of the preset test point, the aerosol generating device is heated to the temperature of the test point.

[0077] Specifically, Figure 2As shown, when N is 5, the temperatures corresponding to the susceptors at the five test points and the magnetic permeability of the susceptors corresponding to each temperature are obtained, that is, the magnetic permeabilities and temperatures of the five test points M0, M1, M2, M3, and M4 are respectively M0 (μ0, T0), M1 (μ1, T1), ..., M4 (μ4, T4). In this embodiment, the magnetic permeability is the relative magnetic permeability. Perform linear fitting on the temperature and magnetic permeability of two adjacent test points, for example, perform linear fitting on the temperature and magnetic permeability between M0 (μ0, T0) and M1 (μ1, T1), perform linear fitting on the temperature and magnetic permeability between M1 (μ1, T1) and M2 (μ2, T2), perform linear fitting on the temperature and magnetic permeability between M2 (μ2, T2) and M3 (μ3, T3), perform linear fitting on the temperature and magnetic permeability between M3 (μ3, T3) and M4 (μ4, T4), and obtain linear fitting relationships between four segments of temperature and magnetic permeability. For example, obtain linear equations for four segments of temperature and magnetic permeability. S3: Determine the relationship between temperature and magnetic permeability in the aerosol generating device based on the linear fitting relationship between N-1 segments of temperature and magnetic permeability. Specifically, as Figure 2 As shown, based on the linear fitting relationship between the temperature and the magnetic permeability in the four sections, the relationship between the temperature and the magnetic permeability in the total aerosol generating device from M0 (μ0, T0) to M4 (μ4, T4) is obtained.

[0078] By adopting the above technical solution, by obtaining the temperature and magnetic permeability corresponding to N different test points, the linear fitting relationship between the temperature and magnetic permeability of two adjacent test points is respectively obtained to obtain the linear fitting relationship between multiple temperature segments and magnetic permeability, and then the relationship between the temperature and magnetic permeability in the aerosol generating device is determined, which can accurately reflect the relationship between the temperature and magnetic permeability in the aerosol generating device and improve the accuracy of the relationship between the temperature and magnetic permeability in the aerosol generating device. The magnetic permeability of the receptor is accurately understood, so as to accurately control the amount of aerosol generated. The magnetic permeability of the receptor at different temperatures is accurately determined. The magnetic permeability of the receptor directly affects the distribution of the electromagnetic field and the energy absorption efficiency. As the temperature changes, the magnetic permeability of the receptor changes, affecting the efficiency of electromagnetic heating. By accurately understanding the changes in magnetic permeability at different temperatures, the heating power can be better adjusted to ensure accurate control of the amount of aerosol generated.

[0079] In some embodiments, the aerosol generating device may be a heat-not-burn smoking device. By obtaining the accurate relationship between temperature and magnetic permeability in the aerosol generating device, an accurate power control algorithm can be formulated based on the obtained relationship between temperature and magnetic permeability. By testing the temperature in the aerosol generating device and accurately obtaining the magnetic permeability corresponding to the temperature, the power of the receptor can be controlled according to the corresponding magnetic permeability. For example, the magnetic field generated by the electromagnetic heating coil will penetrate into the receptor. If the magnetic permeability of the receptor is high, it will induce larger eddy currents, generate more heat, and therefore the heating power will be higher. Based on the accurately determined magnetic permeability, the power at different temperatures can be accurately controlled, which is conducive to formulating an accurate power control algorithm.

[0080] In some embodiments, the aerosol generating device may also be a smoking device simulation product in the testing and development stage. When the relationship between the temperature and magnetic permeability of the smoking device simulation product in the testing and development stage is determined, the effect of magnetic permeability on the amount of aerosol generated can be explored based on the corresponding magnetic permeabilities at different temperatures.

[0081] According to another specific embodiment of the present invention, Fig.31 As shown: S02: linearly fit the temperature and heating element characteristics between two adjacent test points respectively to obtain the linear fitting relationship between N-1 sections of temperature and heating element characteristics, including: S021: obtain the linear fitting relationship between N-1 sections of temperature and heating element characteristics by orthogonal internal difference method according to the temperature and heating element characteristics of the heating element at two adjacent test points.

[0082] According to another specific embodiment of the present invention, Figure 3 As shown, S2: linearly fitting the temperature and magnetic permeability of two adjacent test points respectively to obtain the linear fitting relationship of N-1 sections of temperature and magnetic permeability includes: S21: obtaining the linear fitting relationship of N-1 sections of temperature and magnetic permeability by orthogonal internal difference method according to the temperature and magnetic permeability of the sensor at two adjacent test points.

[0083] Specifically, continue to refer to Figure 2 In some embodiments, according to the temperature and magnetic permeability of the sensor between two adjacent test points, such as M0 (μ0, T0) and M1 (μ1, T1), the linear fitting relationship between the temperature and magnetic permeability of the first section is obtained by the orthogonal internal difference method. The temperature and magnetic permeability relationship between M0 (μ0, T0) and M1 (μ1, T1) can be obtained by knowing the temperature of any point between M0 and M1 and finding the magnetic permeability corresponding to the point. The linear equation of temperature and magnetic permeability is shown in Formula 3:

[0084]

[0085] Among them, μ0 represents the magnetic permeability of the sensor corresponding to the test point M0, T0 represents the temperature of the sensor corresponding to the test point M0, μ1 represents the magnetic permeability of the sensor corresponding to the test point M1, T1 represents the temperature of the sensor corresponding to the test point M1, T x represents the temperature of the sensor at any point between M0 and M1, μ x Indicates temperature as T x By dividing the temperature T of any point between M0 and M1 by x Substituting into formula 3, we can get the corresponding magnetic permeability μ of the point x By adopting the above technical solution, the linear fitting relationship between temperature and magnetic permeability can be obtained simply and quickly.

[0086] According to the above linear equation of temperature and magnetic permeability, a data correspondence table of the relationship between temperature and magnetic permeability is obtained. Divide the temperature between M0 (μ0, T0) and M1 (μ1, T1) into X equal parts, where X is an arbitrary positive integer. For example, divide the temperature between M0 (μ0, T0) and M1 (μ1, T1) into 10 equal parts to obtain the temperatures of 9 intermediate points. Substitute the temperatures of the 9 intermediate points into the linear equation of temperature and magnetic permeability respectively to obtain the magnetic permeabilities corresponding to the 9 intermediate points, and obtain the temperature-magnetic permeability correspondence table. By measuring the temperature of the sensor, find the temperature of the intermediate point corresponding to the temperature, and obtain the corresponding magnetic permeability by looking up the table.

[0087] In another embodiment, the magnetic permeability of any point between M0 and M1 may be known, and the temperature corresponding to the point may be calculated. The linear equation of magnetic permeability and temperature is shown in Formula 4:

[0088]

[0089] Wherein, T0 represents the temperature of the sensor corresponding to the test point M0, μ0 represents the magnetic permeability of the sensor corresponding to the test point M0, T1 represents the temperature of the sensor corresponding to the test point M1, μ1 represents the magnetic permeability of the sensor corresponding to the test point M1, and μ x represents the magnetic permeability of the sensor corresponding to any point between M0 and M1, T x The magnetic permeability is μ x The corresponding temperature. By dividing the magnetic permeability μ of any point between M0 and M1 x Substituting into formula 4, we can get the corresponding temperature T of the point x .

[0090] Similarly, in M1(μ1, T1) and M2(μ2, T2), M2(μ2, T2) and M3(μ3, T3), M3(μ3, T3) and M4(μ4, T4), ..., M N-1 (μ N-1 , T N-1 ) and MN (μ N , T N ) is the same as the method for determining the linear fitting relationship, which will not be described in detail here.

[0091] According to another specific embodiment of the present invention, Fig.32 As shown, S02: linearly fit the temperature and heating element characteristics between two adjacent test points respectively, and obtain the linear fitting relationship between N-1 sections of temperature and heating element characteristics, including: S022: select multiple sampling points between two adjacent test points, obtain the temperatures corresponding to the multiple sampling points of the heating element and the heating element characteristics corresponding to each temperature, and the heating element characteristics corresponding to the multiple sampling points at different temperature points in the process of temperature change between the two adjacent test points, S023: according to the temperatures and heating element characteristics corresponding to the two adjacent test points and the multiple sampling points between the two test points, obtain the linear fitting relationship between N-1 sections of temperature and heating element characteristics by least squares fitting.

[0092] According to another specific embodiment of the present invention, Figure 4 As shown, S2: linearly fitting the temperature and magnetic permeability between two adjacent test points respectively, and obtaining the linear fitting relationship of N-1 sections of temperature and magnetic permeability includes: S22: selecting multiple sampling points between two adjacent test points, obtaining the temperatures corresponding to the multiple sampling points of the receptor and the magnetic permeability of the receptor corresponding to each temperature, and the multiple sampling points correspond to different temperature points of the receptor during the temperature change process between the two adjacent test points, S23: according to the temperatures and magnetic permeabilities corresponding to the two adjacent test points and the multiple sampling points between the two test points, obtaining the linear fitting relationship of N-1 sections of temperature and magnetic permeability by least squares fitting.

[0093] Specifically, taking the interval between M0 (μ0, T0) and M1 (μ1, T1) as an example, the steps of obtaining the linear fitting relationship between the temperature and the magnetic permeability of this section by the least squares method can be as follows:

[0094] Select multiple sampling points N1(μ1, T1), N2(μ2, T2), ..., N between two adjacent test points n (μ n , T n ). Get the temperature T corresponding to multiple sampling points of the sensor i The magnetic permeability μ of the sensor corresponding to each temperature i Assuming that the temperature and magnetic permeability have a linear fitting relationship, the linear fitting line is shown in Formula 5:

[0095] μ x =aT x +b (Formula 5)

[0096] Among them, Tx represents the temperature of any point in the interval, μ x represents the magnetic permeability corresponding to the point, a represents the slope, and b represents the intercept.

[0097] Calculate each sampling point N i (μ i , T i ), the residual is the sampling point N i (μ i , T i ) to the linear fitting line, as shown in Formula 6:

[0098]

[0099] Among them, r i represents the residual of the i-th sampling point, T i represents the temperature of the i-th sampling point, μ i represents the magnetic permeability corresponding to the i-th sampling point, a represents the slope, and b represents the intercept.

[0100] Calculate the residual sum of n sampling points, as shown in Formula 7:

[0101]

[0102] Among them, S(a,b) represents the residual sum of n sampling points, T i represents the temperature of the i-th sampling point, μ i represents the magnetic permeability corresponding to the i-th sampling point, a represents the slope, and b represents the intercept.

[0103] Since the residual sum of n sampling points is minimized, the partial derivative of S(a,b) with respect to a is 0, and the partial derivative of S(a,b) with respect to b is 0. As shown in Formula 8 and Formula 9:

[0104]

[0105] The values ​​of a and b are obtained by solving formula 8 and formula 9, as shown in formula 10 and formula 11:

[0106]

[0107] The linear fitting relationship between the other N-2 temperature segments and the magnetic permeability is obtained by the least squares method. The method and principle for obtaining the interval linear fitting relationship between M0 (μ0, T0) and M1 (μ1, T1) are the same, so they will not be elaborated here.

[0108] By adopting the above technical solution, the linear fitting relationship between the N-1 segment temperature and the magnetic permeability can be accurately obtained, and then the precise relationship between the temperature and the magnetic permeability of the receptor in the aerosol generating device can be obtained.

[0109] According to another specific embodiment of the present invention, the temperature is the highest temperature of the heating element in different test parts at the same time. The method for obtaining the temperature of the highest temperature of the sensor can be to obtain the highest temperature of the sensor by infrared scanning, or to set multiple temperature sensors at different positions on the sensor and select the highest temperature among the multiple temperature sensors. The highest temperature of the sensor can represent the actual heating power. This is because the greater the heating power of the heating element, the higher the maximum temperature generated. The temperature is preferably the highest temperature of the heating element in different test parts at the same time, because if the temperature is not the highest temperature of the heating element, the highest temperature of the heating element may be higher than the temperature determined according to the relationship between the temperature and the magnetic permeability in the aerosol generating device. If the temperature control algorithm is designed according to the determined temperature rather than the highest temperature, the highest temperature of the heating element may be higher than the determined temperature, and there is a risk that the highest temperature is higher than the ignition point of the cigarette, causing the cigarette to burn. At the same time, even if it is the same position on different heating elements, such as the middle point of the physical size of the heating element, the temperature may be different. When the relationship between temperature and magnetic permeability is established, the highest temperature of the heating element is used to unify the standard of the relationship between temperature and magnetic permeability. By adopting the above technical solution, the maximum temperature of the receptor can reflect the actual heating power of the receptor, and by establishing the relationship between the maximum temperature of the receptor and the magnetic permeability, the relationship between the actual maximum temperature of the receptor and the magnetic permeability can be reflected.

[0110] According to another specific embodiment of the present invention, Figure 5As shown, the magnetic permeability is determined according to the magnetic permeability acquisition circuit, and the magnetic permeability acquisition circuit includes: an induction coil L1, which is used to generate a changing magnetic field in a heating mode to heat the sensor; an oscillation module P1, which is used to provide a changing current to the induction coil in the heating mode; an inductance acquisition module P2, which is used to acquire the inductance of the induction coil in the test mode; a first switch element S1, wherein a first end a of the first switch element S1 is connected to a first end of the induction coil, a second end c of the first switch element S1 is connected to a first end a1 of the oscillation module P1 in the heating mode, and a second end c of the first switch element S1 is connected to a first end a2 of the inductance acquisition module P2 in the test mode; a second switch element S2, wherein a first end of the second switch element S2 is connected to a first end of the induction coil; b is connected to the second end of the induction coil, the second end d of the second switch element is connected to the second end b1 of the oscillation module P1 in the heating mode, and the second end d of the second switch element S2 is connected to the second end b2 of the inductance acquisition module P2 in the test mode; the processing module M1 is connected to the control end e of the first switch element S1 and the control end f of the second switch element, and is configured to control the first switch element S1 and the second switch element S2 to be respectively connected to the first end a1 and the second end b1 of the oscillation module P1 in the heating mode, and the first switch element S1 and the second switch element S2 to be respectively connected to the first end a2 and the second end b2 of the inductance acquisition module P2 in the test mode, and determine the magnetic permeability according to the inductance of the induction coil.

[0111] In the heating mode, the oscillation module P1 provides a changing current to the induction coil L1, thereby generating a changing magnetic field around the induction coil L1, and this changing magnetic field causes the sensor to heat up. At this time, the first switch element S1 and the second switch element S1 are respectively connected to the first end a1 and the second end b1 of the oscillation module to form a closed loop, so that the oscillation module P1 can continuously provide current to the induction coil.

[0112] In the test mode, the circuit switches to the measurement state. The first switch element S1 and the second switch element S2 will switch to the test mode and connect to the first terminal a2 and the second terminal b2 of the inductance acquisition module P2 respectively. At this time, the induction coil L1 is no longer used for heating, but for measuring its inductance.

[0113] The processing module is responsible for controlling the switching of the circuit to ensure that the first switch element S1 and the second switch element S2 are turned on in a predetermined manner in different modes. That is, in the heating mode, the processing module M1 controls the connection between the first switch element S1 and the second switch element S2 and the oscillation module P1 to ensure that the induction coil receives the changing current to generate a magnetic field. In the test mode, the processing module controls the first switch element S1 and the second switch element S2 to be connected to the inductance acquisition module P2 to measure the inductance of the induction coil. Finally, the processing module calculates the magnetic permeability of the receptor based on the measured inductance, the number of turns, the cross-sectional area, and the length of the induction coil. The method for calculating the magnetic permeability μ of the receptor based on the inductance L of the induction coil L1 is shown in Formula 12:

[0114]

[0115] Wherein, L represents the inductance of the induction coil L1, μ represents the magnetic permeability of the sensor SE1, N represents the number of turns of the induction coil L1, A represents the cross-sectional area of ​​the induction coil L1, and l represents the length of the induction coil L1.

[0116] By adopting the above technical solution and the design of the circuit, in the heating mode, the magnetic field generated by the induction coil L1 causes the sensor to heat up; and in the test mode, the magnetic permeability of the sensor SE1 can be accurately determined by measuring the inductance of the induction coil L1.

[0117] Second, as Fig.33 As shown, the present invention provides a device 500 for determining the relationship between temperature and heating element characteristics in an aerosol generating device, comprising: a temperature and heating element characteristic data acquisition module 501, used to obtain the temperatures corresponding to the heating element of the aerosol generating device at N test points and the heating element characteristics corresponding to each temperature, the N test points corresponding to different temperature points in the temperature change process of the heating element, wherein N is an integer greater than 2; a temperature and heating element characteristic linear fitting module 502, used to linearly fit the temperature and heating element characteristics between two adjacent test points respectively, to obtain the linear fitting relationship between N-1 sections of temperature and heating element characteristics; a temperature and heating element characteristic corresponding relationship determination module 503, used to determine the relationship between temperature and heating element characteristics in the aerosol generating device according to the linear fitting relationship between N-1 sections of temperature and heating element characteristics.

[0118] like Fig.34 As shown, the device 500 for determining the relationship between the temperature and the heating element characteristics in the aerosol generating device also includes: an orthogonal internal difference module 504 for temperature and heating element characteristics, which is used to obtain the linear fitting relationship between N-1 segments of temperature and heating element characteristics through the orthogonal internal difference method according to the temperature and heating element characteristics of the heating element at two adjacent test points.

[0119] like Fig.35As shown, the device 500 for determining the relationship between temperature and heating element characteristics in an aerosol generating device also includes: a least squares module 505 for temperature and heating element characteristics, which is used to select multiple sampling points between two adjacent test points, obtain the temperatures corresponding to the multiple sampling points of the heating element and the heating element characteristics corresponding to each temperature, and the heating element characteristics corresponding to the multiple sampling points at different temperature points in the process of temperature change between the two adjacent test points. According to the temperatures and heating element characteristics corresponding to the multiple sampling points between the two adjacent test points and the two test points, a linear fitting relationship between N-1 segments of temperature and heating element characteristics is obtained by least squares fitting.

[0120] Thirdly, Fig.21 As shown, the present invention provides an electronic device 200, including a memory 201, a processor 202, and a computer program stored in the memory 201 and executable on the processor 202. When the processor executes the computer program, the method for determining the relationship between the temperature and the heating element characteristics in the above-mentioned aerosol generating device is implemented.

[0121] like Fig. 20 As shown, the present invention also provides a device 100 for determining the relationship between temperature and magnetic permeability in an aerosol generating device, comprising:

[0122] The temperature and permeability data acquisition module 101 is used to acquire the temperature corresponding to the receptor at N test points and the permeability of the receptor corresponding to each temperature, wherein the N test points correspond to different temperature points during the temperature change of the receptor, wherein N is an integer greater than 2;

[0123] The temperature and magnetic permeability linear fitting module 102 is used to perform linear fitting on the temperature and magnetic permeability between two adjacent test points to obtain a linear fitting relationship between N-1 segments of temperature and magnetic permeability;

[0124] The module 103 for determining the corresponding relationship between temperature and magnetic permeability is used to determine the relationship between temperature and magnetic permeability in the aerosol generating device according to the linear fitting relationship between temperature and magnetic permeability in N-1 segments.

[0125] like Fig.21 As shown, the present invention provides an electronic device 200, including a memory 201, a processor 202, and a computer program stored in the memory 201 and executable on the processor 202. When the processor executes the computer program, the method for determining the relationship between temperature and magnetic permeability in the above-mentioned aerosol generating device is implemented.

[0126] like Fig. 22As shown, the device 100 for determining the relationship between temperature and magnetic permeability in the aerosol generating device also includes: a temperature and magnetic permeability orthogonal internal difference module 104, which is used to obtain the linear fitting relationship between N-1 segments of temperature and magnetic permeability through the orthogonal internal difference method according to the temperature and magnetic permeability of the receptor at two adjacent test points.

[0127] like Fig.23 As shown, the device 100 for determining the relationship between temperature and magnetic permeability in the aerosol generating device also includes: a temperature and magnetic permeability least squares module 105, which is used to select multiple sampling points between two adjacent test points, obtain the temperatures corresponding to the multiple sampling points of the receptor and the magnetic permeability of the receptor corresponding to each temperature, the multiple sampling points correspond to different temperature points of the receptor during the temperature change process between the two adjacent test points, and according to the temperatures and magnetic permeabilities corresponding to the two adjacent test points and the multiple sampling points between the two test points, a linear fitting relationship between N-1 sections of temperature and magnetic permeability is obtained by least squares fitting.

[0128] like Figure 6 As shown, the present invention also provides a method for determining the relationship between temperature and resistance in an aerosol generating device, wherein the aerosol generating device includes a heating element, and the heating element is used to heat an aerosol generating substrate to generate an aerosol. The relationship between temperature and resistance in the aerosol generating device is the relationship between the temperature of the heating element in the aerosol generating device and the resistance of the heating element. The method for determining the relationship between temperature and resistance in the aerosol generating device includes: S4: obtaining the corresponding temperatures of the heating element at N test points and the resistance of the heating element corresponding to each temperature, wherein the N test points correspond to different temperature points in the temperature change process of the heating element, wherein N is an integer greater than 2.

[0129] S5: Perform linear fitting on the temperature and resistance between two adjacent test points to obtain the linear fitting relationship between N-1 segments of temperature and resistance. Figure 7 As shown in FIG. 1 , when N is 7, the temperature corresponding to the heating element at the 7 test points and the resistance of the heating element corresponding to each temperature are obtained, that is, the magnetic permeability and temperature of the 7 test points M0, M1, M2, M3, M4, M5 and M6, which are M0 (R0, T0), M1 (R1, T1), M N-1 (R N-1 , T N-1 ), ..., M6 (R6, T6). Among them, T N-1 Indicates the temperature of the heating element corresponding to the Nth test point, R N-1Indicates the resistance of the heating element corresponding to the Nth test point. For example, linear fitting is performed on the temperature and resistance of M0 (R0, T0) and M1 (R1, T1), linear fitting is performed on the temperature and resistance of M2 (R2, R2) and M3 (R3, R3), linear fitting is performed on the temperature and resistance of M3 (R3, R3) and M4 (R4, T4), linear fitting is performed on the temperature and resistance of M4 (R4, R4) and M5 (R5, T5), linear fitting is performed on the temperature and resistance of M5 (R5, T5) and M6 (R6, T6), and the linear fitting relationship of 6 segments of temperature and resistance is obtained. For example, a linear equation of 6 segments of temperature and resistance is obtained.

[0130] S6: Determine the relationship between temperature and resistance in the aerosol generating device according to the linear fitting relationship between temperature and resistance in the N-1 segment. Specifically, Figure 7 As shown, based on the linear fitting relationship between the 6 segments of temperature and resistance, the relationship between the temperature and resistance in the aerosol generating device between M0 (R0, R0) and M6 (R6, R6) is obtained.

[0131] In some embodiments, Figure 7 As shown, a curve of the corresponding relationship between temperature and resistance is obtained, N different test points are selected on the curve, the curve of the corresponding relationship between temperature and resistance is divided into N-1 segments, and linear fitting is performed on the relationship between temperature and resistance in N-1 segments respectively, that is, the linear relationship between temperature and corresponding resistance is obtained. Through the above method, the curve of the corresponding relationship between temperature and resistance is divided into N-1 segments, and each segment has a corresponding relationship between temperature and resistance.

[0132] In some embodiments, Fig.19 As shown, the temperatures corresponding to N test points are directly set, and the aerosol generating device is heated. When the temperature of the heating element reaches the temperature of the corresponding preset test point, the resistance corresponding to the test point is tested to obtain N test points, which are M0 (R0, T0), M1 (R1, T1), ..., M N (R N , T N ). Perform linear fitting on the relationship between temperature and resistance for N-1 segments. For example, you only need to select Fig.19 The temperatures and corresponding resistances of the seven test points M0 (R0, T0), M1 (R1, T1), ..., M6 (R6, T6) are shown in FIG. 2. By adopting the method of this embodiment, the number of samples is small, and the test is more convenient and quick.

[0133] Among them, Figure 8 As shown, the resistance is determined by a heating element resistance acquisition circuit, and the heating element resistance acquisition circuit includes: a heating element R1. A reference unit R2, having a first preset resistance R RThe reference unit is, for example, a resistor with a known resistance value. The processing module M1 is configured to obtain the voltage U of the heating element R1. H and the voltage U of the reference unit R2 R , according to the voltage U of the heating element R1 H , the voltage U of the reference unit R2 R and the first preset resistor R R Determine the resistance R of the heating element R1 H .

[0134] In some embodiments, the heating element R1 is connected in series with the reference unit R2, and the specific calculation method of the resistance of the heating element R1 is shown in Formula 13:

[0135]

[0136] Among them, R H is the resistance of the heating element R1, U H is the voltage of the heating element R1, R R Indicates the first preset resistance, U R Represents the voltage of the reference unit. Since the heating element R1 is connected in series with the reference unit R2, the ratio of the voltage across the heating element R1 to the voltage across the reference unit R2 is equal to the ratio of the resistance of the heating element R1 to the resistance of the reference unit R2.

[0137] In some embodiments, continue to refer to Figure 8 When the fifth switch element S5 is closed, the voltage U of the heating element R1 can be obtained through an analog-to-digital converter (ADC) H and the voltage U of the reference cell R The first analog-to-digital converter AD1 is connected to the current inflow end of the heating element R1, and the second analog-to-digital converter AD2 is connected to the current inflow end of the reference unit R2 to obtain the voltage U of the heating element R1. H and the voltage U of the reference unit R2 R , according to the voltage U of the heating element R1 H , the voltage U of the reference unit R2 R and the first preset resistor R R Determine the resistance R of the heating element R1 H .

[0138] By adopting the above technical solution, a reference unit having a first preset resistance is set, and the voltage U of the heating element R1 is H , the voltage U of the reference unit R2 R and the first preset resistor R R Determine the resistance R of the heating element R1 HBy obtaining the temperature and resistance corresponding to N different test points, linear fitting is performed on the temperature and resistance of two adjacent test points respectively, and the linear fitting relationship of multiple temperature and resistance segments is obtained, and then the relationship between the temperature and resistance in the aerosol generating device is determined. The relationship between the temperature and resistance in the aerosol generating device can be accurately obtained, the accuracy of the relationship between the temperature and resistance in the aerosol generating device can be improved, and the amount of aerosol generated can be more accurately controlled.

[0139] In some embodiments, the aerosol generating device may be a heat-not-burn smoking device. By obtaining the accurate relationship between temperature and resistance in the aerosol generating device, an accurate power control algorithm can be formulated based on the obtained temperature and resistance relationship. By testing the temperature in the aerosol generating device and accurately obtaining the resistance corresponding to the temperature, the power control of the heating element can be optimized based on the corresponding resistance. The higher the resistance of the heating element, the greater the power at the same rated current. The power at different temperatures can be accurately controlled based on the accurately determined resistance of the heating element, which facilitates the formulation of an accurate power control algorithm.

[0140] In some embodiments, the aerosol generating device may also be a smoking device simulation product in the testing and development stage. For a smoking device simulation product in the testing and development stage, the accurate resistance of the heating element is obtained based on the accurately determined relationship between temperature and resistance, and the influence of the resistance of the heating element on the amount of aerosol generated is then explored.

[0141] According to another specific embodiment of the present invention, Figure 8 The heating element resistance acquisition circuit also includes: an operational amplifier OP1, which is used to amplify the voltage of the reference unit R2 to obtain a voltage amplification signal, and transmit the voltage amplification signal to the processing module M1. Specifically, the operational amplifier OP1 is connected in parallel with the reference unit R2, and converts the voltage across the reference unit R2 into a voltage amplification signal, which is transmitted to the second analog-to-digital converter AD2. Since the reference unit R2 is connected in series with the heating element R1, in order to reduce the power loss of the reference unit R2 and reduce the power of the reference unit R2, a reference unit R2 with a lower resistance than the heating element resistance is used, that is, the first preset resistance R R Smaller. Since the first preset resistance R R The voltage of the reference unit R2 is small, and an operational amplifier is used to convert the voltage of the reference unit into a voltage amplification signal and transmit it to the second analog-to-digital converter AD2, thereby improving the accuracy of resistance detection, thereby improving the accuracy of determining the relationship between temperature and resistance in the aerosol generating device.

[0142] According to another specific embodiment of the present invention, Fig. 9, the heating element resistance acquisition circuit also includes: an electrical connection end, such as a grounding end GND. A third switch element S3, a first end g1 of the third switch element S3 is connected to a first end h1 of the heating element R1, a second end g2 of the third switch element S3 is connected to the electrical connection end, and a control end g3 of the third switch element is connected to a processing module M1. A fourth switch element S4, a first end i1 of the fourth switch element S4 is connected to a first end l1 of the reference unit R2, a second end i2 of the fourth switch element S4 is connected to the electrical connection end, and a control end i3 of the fourth switch element is connected to the processing module M1; a first end h1 of the heating element R1 is connected to a second end l2 of the reference unit R2; the processing module M1 is used to control the conduction and closing of the third switch element S3 and the fourth switch element S4; the third switch element S3 is used to be turned on in a heating mode, and in a heating mode, current flows directly through the heating element R1 and the third switch element S3, and the heating element R1 is heated. The fourth switch element S4 is used to be turned on in the test mode. In the test mode, the current flows through the heating element R1, the reference unit R2 and the fourth switch element S4. The processing module M1 processes the heating element R1 according to the voltage of the heating element R1, the voltage of the reference unit R2 and the first preset resistor R R Determine the resistance R of the heating element H The reference unit, for example, has a resistance value of a first preset resistance R R resistance.

[0143] In some embodiments, for example, the second end g2 of the third switch element S3 and the second end i2 of the fourth switch element S4 are both connected to the ground terminal GND.

[0144] In the heating mode, the third switch element S3 is turned on, and the current flows through the heating element R1 and the third switch element S3. The heating element R1 generates heat for heating. In the test mode, the fourth switch element S4 is turned on, and the current flows through the heating element R1, the reference unit R2 and the fourth switch element S4. In the test mode, the processing module M1 generates a voltage according to the voltage of the heating element R1, the voltage of the reference unit R2 and the known first preset resistor R R , to calculate the resistance R of the heating element R1 H With the above technical solution, the heating mode and the test mode use different current paths, and the reference unit only works in the test mode. In the heating mode, the reference unit does not consume additional power, which reduces the consumption of electric energy and can work independently without a voltage amplifier element.

[0145] According to another specific embodiment of the present invention, Fig.10 As shown, S5: linearly fit the temperature and resistance between two adjacent test points respectively to obtain the linear fitting relationship of N-1 segments of temperature and resistance, including: S51: obtain the linear fitting relationship of N-1 segments of temperature and resistance by orthogonal internal difference method according to the temperature and resistance of the heating element at two adjacent test points.

[0146] Specifically, Figure 7 As shown, in some embodiments, according to the temperature and resistance of the heating element at two adjacent test points, such as M0 (R0, T0) and M1 (R1, T1), the linear fitting relationship between the first temperature and resistance is obtained by the orthogonal internal difference method. The temperature and resistance relationship between M0 (R0, T0) and M1 (R1, T1) can be obtained by knowing the temperature of any point between M0 and M1, and finding the resistance corresponding to the point. The linear equation of temperature and resistance is shown in Formula 14:

[0147]

[0148] Among them, R0 represents the resistance of the heating element corresponding to the test point M0, T0 represents the temperature of the heating element corresponding to the test point M0, R1 represents the resistance of the heating element corresponding to the test point M1, T1 represents the temperature of the heating element corresponding to the test point M1, T x Represents the temperature of the heating element at any point between M0 and M1, R x Indicates temperature as T x By dividing the temperature T of any point between M0 and M1 by x Substitute into formula 14 to get the corresponding resistance R at that point. x By adopting the above technical solution, the linear fitting relationship between temperature and resistance can be obtained simply and quickly.

[0149] According to the above linear equation of temperature and resistance, a data correspondence table of the relationship between temperature and resistance is obtained. Divide the temperature between M0 (R0, T0) and M1 (R1, T1) into X equal parts, where X is an arbitrary positive integer. For example, divide the temperature between M0 (R0, T0) and M1 (R1, T1) into 5 equal parts to obtain the temperatures of the four middle points. Substitute the temperatures of the four middle points into the linear equation of temperature and resistance respectively, obtain the resistances corresponding to the four middle points, and obtain the temperature-resistance correspondence table. By measuring the temperature of the heating element, find the temperature of the middle point corresponding to the temperature, and obtain the corresponding resistance by looking up the table.

[0150] In another embodiment, the resistance of any point between M0 and M1 may be known, and the temperature corresponding to the point may be calculated. The linear equation of resistance and temperature is shown in Formula 15:

[0151]

[0152] Among them, T0 represents the temperature of the heating element corresponding to the test point M0, R0 represents the resistance of the heating element corresponding to the test point M0, T1 represents the temperature of the heating element corresponding to the test point M1, R1 represents the resistance of the heating element corresponding to the test point M1, and R xIt represents the resistance of the heating element at any point between M0 and M1, T x The resistance is R x The corresponding temperature. By setting the resistance R at any point between M0 and M1 x Substituting into formula 15, we can get the corresponding temperature T of the point x .

[0153] Similarly, in M1 (R1, T1) and M2 (R2, T2), M2 (R2, T2) and M3 (R3, T3), M3 (R3, T3) and M4 (R4, T4), ..., M N-1 (R N-1 , T N-1 ) and M N (R N , T N ) is the same as the method for determining the linear fitting relationship, which will not be described in detail here.

[0154] According to another specific embodiment of the present invention, Fig.11 As shown, S5: linearly fit the temperature and resistance between two adjacent test points to obtain a linear fitting relationship between N-1 segments of temperature and resistance, including: S52: select multiple sampling points between two adjacent test points, obtain the temperatures corresponding to the multiple sampling points of the heating element and the resistance of the heating element corresponding to each temperature, and the multiple sampling points correspond to different temperature points of the heating element during the temperature change process between the two adjacent test points; S53: obtain the linear fitting relationship between N-1 segments of temperature and resistance by least squares fitting based on the temperatures and resistances corresponding to the two adjacent test points and the pairs of sampling points between the two test points.

[0155] The principle and steps of obtaining the linear fitting relationship between N-1 temperature and resistance by the least square method are the same as those of obtaining the linear fitting relationship between N-1 temperature and permeability by the least square method, which will not be elaborated here.

[0156] By adopting the above technical solution, the relationship between temperature and resistance in the aerosol generating device can be accurately obtained.

[0157] According to another specific embodiment of the present invention, the temperature is the highest temperature of the heating element in different test parts at the same time. The method for obtaining the highest temperature of the heating element may be to obtain the highest temperature of the heating element by infrared scanning, or to set multiple temperature sensors at different positions on the heating element and select the highest temperature among the multiple temperature sensors. The temperature is preferably the highest temperature of the heating element in different test parts at the same time, because if the temperature is not the highest temperature of the heating element, the highest temperature of the heating element may be higher than the temperature determined according to the relationship between temperature and resistance in the aerosol generating device. If the temperature control algorithm is designed according to the determined temperature rather than the highest temperature, the highest temperature of the heating element may be higher than the determined temperature, and there is a risk that the highest temperature is higher than the ignition point of the cigarette, causing the cigarette to burn. At the same time, even if the same position on different heating elements, such as the middle point of the physical size of the heating element, may have different temperatures. When the highest temperature of the heating element is used to establish the relationship between temperature and resistance, the standard of the relationship between temperature and resistance can be unified. The above technical solution can reflect the corresponding relationship between the actual highest temperature and resistance of the heating element in the aerosol generating device.

[0158] like Fig.24 As shown, the present invention provides a device 300 for determining the relationship between temperature and resistance in an aerosol generating device, comprising:

[0159] The temperature and resistance data acquisition module 301 is used to obtain the temperature of the heating element at N test points and the resistance of the heating element corresponding to each temperature, wherein the N test points correspond to different temperature points during the temperature change of the heating element, wherein N is an integer greater than 2;

[0160] The temperature and resistance linear fitting module 302 is used to perform linear fitting on the temperature and resistance between two adjacent test points to obtain a linear fitting relationship between N-1 segments of temperature and resistance;

[0161] The temperature and resistance corresponding relationship determination module 303 is used to determine the temperature and resistance relationship in the aerosol generating device according to the linear fitting relationship between N-1 segments of temperature and resistance.

[0162] like Fig.21 As shown, the present invention provides an electronic device 200, including a memory 201, a processor 202, and a computer program stored in the memory 201 and executable on the processor 202. When the processor executes the computer program, the method for determining the relationship between temperature and resistance in the aerosol generating device is implemented.

[0163] like Fig.25As shown, the device 300 for determining the relationship between temperature and resistance in the aerosol generating device also includes: a temperature and resistance orthogonal internal difference module 304, which is used to obtain a linear fitting relationship between N-1 segments of temperature and resistance through an orthogonal internal difference method based on the temperature and resistance of the heating element at two adjacent test points.

[0164] like Fig.26 As shown, the device 300 for determining the relationship between temperature and resistance in the aerosol generating device also includes: a temperature and resistance least squares module 305, which is used to select multiple sampling points between two adjacent test points, obtain the temperatures corresponding to the multiple sampling points of the heating element and the resistance of the heating element corresponding to each temperature, and the multiple sampling points correspond to different temperature points of the heating element in the temperature change process between the two adjacent test points. According to the temperatures and resistances corresponding to the two adjacent test points and the sampling points between the two test points, a linear fitting relationship between N-1 segments of temperature and resistance is obtained by least squares fitting.

[0165] Fourthly, Fig.12 As shown, the present invention also provides a method for determining the relationship between the collection temperature and the maximum temperature in an aerosol generating device. The aerosol generating device includes a heating element and a temperature sensor. The heating element is used to heat the heated aerosol generating matrix to generate an aerosol. The heating element has a maximum temperature and a collection temperature. The collection temperature is the temperature of the heating element at a fixed position. The collection temperature is collected by the temperature sensor. The maximum temperature is the maximum temperature in different test parts of the heating element at the same time. The determination method includes: S7: Obtaining the corresponding collection temperatures of the heating element at N test points and the maximum temperature of the heating element corresponding to each collection temperature. The N test points correspond to different temperature points in the process of the collection temperature change of the heating element, wherein N is an integer greater than 2. S8: Linearly fit the corresponding collection temperature and the maximum temperature between two adjacent test points respectively to obtain the linear fitting relationship between the N-1 segment collection temperature and the maximum temperature. S9: Determine the relationship between the collection temperature and the maximum temperature in the aerosol generating device according to the linear fitting relationship between the N-1 segment collection temperature and the maximum temperature. The temperature sensor includes a temperature acquisition circuit, which includes: a temperature measuring element; a processing module M1, which is configured to obtain the voltage of the temperature measuring element, obtain the temperature of the temperature measuring element according to the voltage of the temperature measuring element, and determine the acquisition temperature according to the temperature of the temperature measuring element R3.

[0166] In some embodiments, the temperature measuring element may be a resistance temperature detector. In other embodiments, the temperature measuring element may be a thermocouple. The processing module determines the temperature of the temperature measuring element based on the voltage of the temperature measuring element. Since the temperature measuring element is in direct contact with the heating element, the temperature of the heating element is determined based on the temperature of the temperature measuring element. For example, the temperature of the temperature measuring element is equal to the temperature of the heating element.

[0167] In the aerosol generating device, a temperature sensor is provided at a fixed position of the heating element, and the sampling temperature is the temperature of the temperature sensor at the fixed position of the heating element. The temperature of the heating element at a fixed position is often not necessarily the maximum temperature of the heating element. The maximum temperature of the heating element reflects the actual power of the heating element. The sampling temperature of the fixed position of the heating element can be directly obtained through the temperature sensor inside the aerosol generating device, while the maximum temperature of the heating element is often not easy to obtain directly. By establishing a corresponding relationship between the sampling temperature and the maximum temperature of the heating element, the maximum temperature of the heating element can be obtained by only testing the temperature of the temperature sensor in the aerosol generating device.

[0168] By adopting the above technical solution, the corresponding relationship between the sampling temperature and the maximum temperature of the heating element can be accurately obtained. The maximum temperature of the heating element can be accurately determined by the sampling temperature of the temperature sensor on the heating element.

[0169] According to another specific embodiment of the present invention, Fig.13 The temperature measuring element is a resistance temperature detector R3, and the temperature acquisition circuit also includes: a voltage dividing unit R4 having a second preset resistance R N The voltage dividing unit is, for example, a voltage dividing resistor. The processing module M1 is configured to obtain the voltage U of the voltage dividing unit R4. N , according to the voltage U of the resistance temperature detector R3 M , the voltage U of the voltage divider unit R4 N and the second preset resistor R N Determine the temperature T of the RTD M The resistance temperature detector R3 is, for example, a platinum resistor.

[0170] Specifically, the processing module M1 processes the voltage U of the resistance temperature detector R3 according to the voltage U M , the voltage U of the voltage divider unit R4 N and the second preset resistor R N Determine the resistance R of the RTD R3 M , and according to the resistance temperature detector resistance R M Determine the temperature T of the RTD M The specific calculation method is shown in Formula 16:

[0171]

[0172] Among them, R M represents the resistance of the resistance temperature detector R3, U M represents the voltage of the resistance temperature detector R3, R N Indicates the second preset resistance, U NRepresents the voltage of the voltage divider unit. Since the resistance temperature detector R3 is connected in series with the voltage divider unit R4, the ratio of the voltage across the resistance temperature detector R3 to the voltage across the voltage divider unit R4 is equal to the ratio of the resistance of the resistance temperature detector R3 to the resistance of the voltage divider unit R4. According to the known resistance temperature corresponding table of the resistance temperature detector, R M The resistance of the resistance temperature detector R3 corresponds to the temperature of the resistance temperature detector, and then the collected temperature of the heating element is obtained. By adopting the above technical solution, the resistance of the resistance temperature detector can be accurately obtained, and then the temperature of the resistance temperature detector can be obtained, and then the accurate sampling temperature of the heating element can be determined.

[0173] Furthermore, the voltage U of the resistance temperature detector R3 M and the voltage U of the voltage divider R4 N The voltage U of the resistance temperature detector R3 can be obtained by the third analog-to-digital converter AD3 and the fourth analog-to-digital converter AD4. The third analog-to-digital converter AD3 is connected to the current inflow end of the resistance temperature detector R3, and the fourth analog-to-digital converter AD4 is connected to the current inflow end of the voltage divider unit R4, thereby obtaining the voltage U of the resistance temperature detector R3. M and the voltage U of the voltage divider R4 N .

[0174] In some embodiments, the second operational amplifier OP2 may be connected in parallel to both ends of the resistance temperature detector R3 to convert the voltage of the resistance temperature detector R3 into a voltage amplification signal and transmit it to the third analog-to-digital converter AD3.

[0175] According to another specific embodiment of the present invention, Fig.14 The temperature measuring element is a resistance temperature detector R3, and the temperature acquisition circuit further includes: a constant current output module I1, which is used to output a constant current to the resistance temperature detector R3; a processing module M1, which is configured to determine the temperature T of the resistance temperature detector R3 according to the voltage and constant current I of the resistance temperature detector R3. M The third operational amplifier OP3 is connected in parallel to both ends of the resistance temperature detector R3, and further converts the voltage of the resistance temperature detector R3 into a voltage amplification signal, and transmits it to the fifth analog-to-digital converter AD5.

[0176] Specifically, the processing module M1 processes the voltage U of the resistance temperature detector R3 according to the voltage U M The resistance R of the resistance temperature detector R3 is determined by the constant current I M , the calculation method is shown in formula 17:

[0177]

[0178] Among them, R M represents the resistance of the resistance temperature detector R3, UM represents the voltage of the resistance temperature detector R3, and I represents the constant current. M , query the resistance-temperature correspondence table of the known resistance temperature detector and get R M The resistance of the resistance temperature detector R3 corresponds to the temperature of the resistance temperature detector, and then the collected temperature of the heating element is obtained.

[0179] According to another specific embodiment of the present invention, Fig.15 The temperature measuring element is a thermocouple P3, and the thermocouple P3 has a test end and a cold end. The temperature acquisition circuit also includes: a processing module M1, which is configured to obtain the voltage of the test end and the voltage of the cold end of the thermocouple, and determine the temperature of the thermocouple according to the voltage of the test end and the voltage of the cold end of the thermocouple.

[0180] Specifically, the voltage at the test end of the thermocouple P3 can be obtained through the seventh analog-to-digital converter AD7. The processing module obtains the temperature of the test end of the thermocouple P3 according to the voltage at the test end of the thermocouple. The voltage at the cold end of the thermocouple P3 can be obtained through the cold end test module. The cold end test module includes a second voltage-dividing resistor R5, a thermistor R6 and a sixth analog-to-digital converter AD6. The sixth analog-to-digital converter AD6 is used to collect the voltage of the thermistor R6. The processing module M1 determines the temperature of the cold end according to the voltage of the thermistor R6. The processing module M1 determines the temperature of the thermocouple according to the temperature of the test end of the thermocouple P3 and the temperature of the cold end, and then determines the sampled temperature of the heating element. Using the above technical solution, the temperature of the thermocouple is determined according to the voltage at the test end and the cold end, and the temperature of the thermocouple is accurately obtained, and then the sampling temperature of the heating element is accurately obtained.

[0181] In some embodiments, the third operational amplifier OP3 converts the voltage of the thermocouple P3 into a voltage amplified signal and transmits it to the seventh analog-to-digital converter AD7. The amplification factor of the third operational amplifier OP3 can be adjusted by the seventh resistor R7 connected in series with the third operational amplifier OP3 and the eighth resistor R8 connected in parallel with the third operational amplifier OP3. That is, the resistance ratio of the eighth resistor R8 to the seventh resistor R7 is equal to the amplification factor of the third operational amplifier OP3.

[0182] According to another specific embodiment of the present invention, Fig.16 As shown, S8: linearly fit the corresponding collection temperature and the maximum temperature between two adjacent test points respectively to obtain the linear fitting relationship between N-1 sections of collection temperature and the maximum temperature, including: S81: obtain the linear fitting relationship between N-1 sections of collection temperature and the maximum temperature by orthogonal internal difference method according to the collection temperature and the maximum temperature of the sensor at two adjacent test points.

[0183] The steps and principles of obtaining the linear fitting relationship between the N-1 segment collection temperature and the maximum temperature by the orthogonal interpolation method are the same as those of obtaining the linear fitting relationship between the N-1 segment temperature and the magnetic permeability by the orthogonal interpolation method mentioned above, and are not repeated here.

[0184] According to another specific embodiment of the present invention, Fig.17 As shown, S8: linearly fit the corresponding collection temperature and the maximum temperature between two adjacent test points respectively, and obtain the linear fitting relationship between N-1 sections of collection temperature and the maximum temperature, including: S82: select multiple sampling points between two adjacent collection temperatures, obtain the collection temperatures corresponding to the multiple sampling points of the heating element and the maximum temperature of the heating element corresponding to each collection temperature, and the multiple sampling points correspond to different temperature points of the heating element in the process of changing the sampling temperature between two adjacent test points, S83: according to the collection temperatures and the maximum temperatures corresponding to the two adjacent test points and the multiple sampling points between the two test points, obtain the linear fitting relationship between N-1 sections of collection temperature and the maximum temperature by least squares fitting.

[0185] The steps and principles of obtaining the linear fitting relationship between the N-1 segment collection temperature and the maximum temperature by least squares fitting are the same as those of obtaining the linear fitting relationship between the N-1 segment temperature and the magnetic permeability by least squares fitting mentioned above, and will not be repeated here.

[0186] Fifthly, Fig. 27 As shown, the present invention provides a device 400 for determining the relationship between the collected temperature and the maximum temperature in an aerosol generating device, comprising:

[0187] The acquisition module 401 for acquiring the acquisition temperature and maximum temperature data of the heating element at N test points and the maximum temperature of the heating element corresponding to each acquisition temperature, wherein the N test points correspond to different temperature points in the process of the acquisition temperature change of the heating element, wherein N is an integer greater than 2;

[0188] The collection temperature and maximum temperature linear fitting module 402 is used to perform linear fitting on the corresponding collection temperature and maximum temperature between two adjacent test points, respectively, to obtain the linear fitting relationship between the collection temperature and the maximum temperature of N-1 segments;

[0189] The module 403 for determining the corresponding relationship between the collected temperature and the maximum temperature is used to determine the relationship between the collected temperature and the maximum temperature in the aerosol generating device according to the linear fitting relationship between the N-1 segments of collected temperature and the maximum temperature.

[0190] like Fig.28As shown, the device 400 for determining the relationship between the collected temperature and the maximum temperature in the aerosol generating device also includes: an orthogonal internal difference module 404 for the collected temperature and the maximum temperature, which is used to obtain the linear fitting relationship between the collected temperature and the maximum temperature of N-1 segments by the orthogonal internal difference method according to the collected temperature and the maximum temperature of the sensor at two adjacent test points.

[0191] like Fig.29 As shown, the device 400 for determining the relationship between the collection temperature and the maximum temperature in the aerosol generating device also includes: a collection temperature and maximum temperature least squares module 405, which is used to select multiple sampling points between two adjacent collection temperatures, obtain the collection temperatures corresponding to the multiple sampling points of the heating element and the maximum temperature of the heating element corresponding to each collection temperature, and the multiple sampling points correspond to different temperature points of the heating element in the process of changing the sampling temperature between two adjacent test points. According to the collection temperatures and the maximum temperatures corresponding to the multiple sampling points between the two adjacent test points and the two test points, a linear fitting relationship between N-1 segments of collection temperatures and the maximum temperatures is obtained by least squares fitting.

[0192] Sixth, such as Fig.21 As shown, the present invention provides an electronic device 200, including a memory 201, a processor 202, and a computer program stored in the memory 201 and executable on the processor 202. When the processor executes the computer program, the method for determining the relationship between the collected temperature and the maximum temperature in the above-mentioned aerosol generating device is implemented.

[0193] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A method for determining the relationship between temperature and heating element characteristics in an aerosol generating device, characterized in that: The aerosol generating device includes a heating element, and the heating element is used to heat the aerosol generating substrate to generate an aerosol, and the determining method includes: Obtaining temperatures corresponding to N test points of the heating element and characteristics of the heating element corresponding to each of the temperatures, wherein the N test points correspond to different temperature points in a temperature change process of the heating element, wherein N is an integer greater than 2; Performing linear fitting on the temperature and the heating element characteristic between two adjacent test points respectively, to obtain a linear fitting relationship between N-1 segments of temperature and heating element characteristic; According to the linear fitting relationship between the temperature and the heating element characteristics described in paragraph N-1, the relationship between the temperature and the heating element characteristics in the aerosol generating device is determined.

2. The method for determining the relationship between temperature and heating element characteristics in an aerosol generating device according to claim 1, characterized in that: The method of linearly fitting the temperature and the heating element characteristics between two adjacent test points to obtain a linear fitting relationship between N-1 segments of temperature and heating element characteristics includes: obtaining a linear fitting relationship between N-1 segments of temperature and heating element characteristics by an orthogonal internal difference method based on the temperature and the heating element characteristics of the heating element at two adjacent test points.

3. The method for determining the relationship between temperature and heating element characteristics in an aerosol generating device according to claim 1, characterized in that: The linear fitting of the temperature and the heating element characteristic between two adjacent test points to obtain the linear fitting relationship between N-1 segments of temperature and heating element characteristic comprises: A plurality of sampling points are selected between two adjacent test points, and the temperatures corresponding to the plurality of sampling points of the heating element and the heating element characteristics corresponding to each temperature are obtained. The plurality of sampling points correspond to different temperature points of the heating element characteristics during the change of the temperature between the two adjacent test points. According to the temperatures and heating element characteristics corresponding to the plurality of sampling points between the two adjacent test points and the two test points, a linear fitting relationship between the temperatures and heating element characteristics of N-1 segments is obtained by least squares fitting.

4. The method for determining the relationship between temperature and heating element characteristics in an aerosol generating device according to claim 1, characterized in that: The temperature is the highest temperature of the heating element at different test locations at the same time.

5. The method for determining the relationship between temperature and heating element characteristics in an aerosol generating device according to any one of claims 1 to 4, characterized in that: The characteristic of the heating element is the magnetic permeability of the receptor, and the magnetic permeability is determined according to a magnetic permeability acquisition circuit, and the magnetic permeability acquisition circuit includes: an induction coil, for generating a changing magnetic field in a heating mode to heat the susceptor; an oscillation module, configured to provide a variable current to the induction coil in the heating mode; An inductance acquisition module, used to acquire the inductance of the induction coil in a test mode; a first switch element, wherein a first end of the first switch element is connected to a first end of the induction coil, a second end of the first switch element is connected to a first end of the oscillation module in the heating mode, and a second end of the first switch element is connected to a first end of the inductance acquisition module in the test mode; a second switch element, wherein a first end of the second switch element is connected to a second end of the induction coil, a second end of the second switch element is connected to a second end of the oscillation module in the heating mode, and a second end of the second switch element is connected to a second end of the inductance acquisition module in the test mode; A processing module is connected to the control end of the first switch element and the control end of the second switch element, and is configured to control the first switch element and the second switch element to be respectively conducted with the first end and the second end of the oscillation module in a heating mode, and the first switch element and the second switch element to be respectively conducted with the first end and the second end of the inductance acquisition module in a test mode, and determine the magnetic permeability according to the inductance of the induction coil.

6. The method for determining the relationship between temperature and heating element characteristics in an aerosol generating device according to any one of claims 1 to 4, characterized in that: The heating element characteristic is the resistance of the heating element, and the resistance is determined by a heating element resistance acquisition circuit, and the heating element resistance acquisition circuit includes: The heating element; A reference unit having a first preset resistance; The processing module is configured to obtain the voltage of the heating element and the voltage of the reference unit, and determine the resistance of the heating element according to the voltage of the heating element, the voltage of the reference unit and the first preset resistance.

7. The method for determining the relationship between temperature and heating element characteristics in an aerosol generating device according to claim 6, characterized in that: The heating element resistance acquisition circuit also includes: An operational amplifier is used to amplify the voltage of the reference unit to obtain a voltage amplification signal, and transmit the voltage amplification signal to the processing module.

8. The method for determining the relationship between temperature and heating element characteristics in an aerosol generating device according to claim 6, characterized in that: The heating element resistance acquisition circuit also includes: Electrical connection terminal; a third switch element, wherein a first end of the third switch element is connected to the first end of the heating element, a second end of the third switch element is connected to the electrical connection end, and a control end of the third switch element is connected to the processing module; a fourth switch element, wherein a first end of the fourth switch element is connected to the first end of the reference unit, a second end of the fourth switch element is connected to the electrical connection end, and a control end of the fourth switch element is connected to the processing module; The first end of the heating element is connected to the second end of the reference unit; The processing module is used to control the on and off of the third switch element and the fourth switch element; The third switch element is used to be turned on in a heating mode, in which mode current directly flows through the heating element and the third switch element, and the heating element is heated; The fourth switching element is used to be turned on in a test mode, in which current flows through the heating element, the reference unit and the fourth switching element, and the processing module determines the resistance of the heating element according to the voltage of the heating element, the voltage of the reference unit and the first preset resistance in the test mode.

9. A device for determining the relationship between temperature and heating element characteristics in an aerosol generating device, characterized in that: include: a temperature and heating element characteristic data acquisition module, used to acquire the temperature corresponding to the heating element of the aerosol generating device at N test points and the heating element characteristic corresponding to each of the temperatures, wherein the N test points correspond to different temperature points during the temperature change process of the heating element, wherein N is an integer greater than 2; A temperature and heating element characteristic linear fitting module, used for linearly fitting the temperature and the heating element characteristic between two adjacent test points, respectively, to obtain a linear fitting relationship between N-1 segments of temperature and heating element characteristic; The module for determining the corresponding relationship between temperature and heating element characteristics is used to determine the relationship between temperature and heating element characteristics in the aerosol generating device according to the linear fitting relationship between temperature and heating element characteristics in the N-1 segment.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method for determining the relationship between temperature and heating element characteristics in the aerosol generating device according to any one of claims 1 to 8 is implemented.

11. A method for determining the relationship between the collection temperature and the maximum temperature in an aerosol generating device, characterized in that: The aerosol generating device comprises a heating element and a temperature sensor, wherein the heating element is used to heat an aerosol generating substrate to generate an aerosol, the heating element has a maximum temperature and a collection temperature, the collection temperature is the temperature of the heating element at a fixed position, the collection temperature is collected by the temperature sensor, the maximum temperature is the maximum temperature of different test parts of the heating element at the same time, and the determination method comprises: Obtaining the corresponding collected temperatures of the heating element at N test points and the maximum temperature of the heating element corresponding to each of the collected temperatures, wherein the N test points correspond to different temperature points in the process of the collected temperature change of the heating element, wherein N is an integer greater than 2; Performing linear fitting on the corresponding collected temperatures and the maximum temperature between two adjacent test points, respectively, to obtain a linear fitting relationship between N-1 sections of collected temperatures and the maximum temperature; Determine the relationship between the collection temperature and the maximum temperature in the aerosol generating device according to the linear fitting relationship between the collection temperature and the maximum temperature described in paragraph N-1; The temperature sensor includes a temperature acquisition circuit, and the temperature acquisition circuit includes: Temperature measuring element; The processing module is configured to obtain the voltage of the temperature measuring element, obtain the temperature of the temperature measuring element according to the voltage of the temperature measuring element, and determine the collection temperature according to the temperature of the temperature measuring element.

12. The method for determining the relationship between the collected temperature and the maximum temperature in the aerosol generating device according to claim 11, characterized in that: The temperature measuring element is a resistance temperature detector, and the temperature acquisition circuit also includes: A voltage dividing unit having a second preset resistance; The processing module is configured to obtain the voltage of the voltage dividing unit, and determine the temperature of the resistance temperature detector according to the voltage of the resistance temperature detector, the voltage of the voltage dividing unit and the second preset resistance.

13. The method for determining the relationship between the collected temperature and the maximum temperature in the aerosol generating device according to claim 11, characterized in that: The temperature measuring element is a resistance temperature detector, and the temperature acquisition circuit also includes: A constant current output module, used for outputting a constant current to the resistance temperature detector; The processing module is configured to determine the temperature of the resistance temperature detector according to the voltage of the resistance temperature detector and the constant current.

14. The method for determining the relationship between the collected temperature and the maximum temperature in the aerosol generating device according to claim 11, characterized in that: The temperature measuring element is a thermocouple, and the thermocouple has a test end and a cold end. The temperature acquisition circuit also includes: The processing module is configured to obtain the voltage of the test end and the voltage of the cold end of the thermocouple, and determine the temperature of the thermocouple according to the voltage of the test end and the voltage of the cold end of the thermocouple.

15. The method for determining the relationship between the collected temperature and the maximum temperature in the aerosol generating device according to claim 11, characterized in that: The linear fitting of the corresponding collected temperature and the maximum temperature between two adjacent test points to obtain the linear fitting relationship between N-1 sections of collected temperature and the maximum temperature includes: obtaining the linear fitting relationship between the collected temperature and the maximum temperature of N-1 sections by an orthogonal interpolation method according to the collected temperature and the maximum temperature of the sensor at two adjacent test points.

16. The method for determining the relationship between the collected temperature and the maximum temperature in the aerosol generating device according to claim 11, characterized in that: The linear fitting of the corresponding collected temperatures and the maximum temperature between two adjacent test points to obtain the linear fitting relationship between the N-1 sections of collected temperatures and the maximum temperature comprises: A plurality of sampling points are selected between two adjacent collection temperatures to obtain the collection temperatures corresponding to the plurality of sampling points of the heating element and the maximum temperature of the heating element corresponding to each of the collection temperatures. The plurality of sampling points correspond to different temperature points of the heating element during the change of the sampling temperature between two adjacent test points. According to the collection temperatures and the maximum temperatures corresponding to the plurality of sampling points between the two adjacent test points and the two test points, a linear fitting relationship between the collection temperatures and the maximum temperatures of N-1 segments is obtained by least squares fitting.

17. A device for determining the relationship between the collected temperature and the maximum temperature in an aerosol generating device, characterized in that: include: A collection temperature and maximum temperature data acquisition module, used to obtain the corresponding collection temperatures of the heating element at N test points and the maximum temperature of the heating element corresponding to each of the collection temperatures, wherein the N test points correspond to different temperature points in the process of the collection temperature change of the heating element, wherein N is an integer greater than 2; A collection temperature and maximum temperature linear fitting module is used to perform linear fitting on the corresponding collection temperature and the maximum temperature between two adjacent test points to obtain a linear fitting relationship between N-1 sections of collection temperature and maximum temperature; The module for determining the corresponding relationship between the collected temperature and the maximum temperature is used to determine the relationship between the collected temperature and the maximum temperature in the aerosol generating device according to the linear fitting relationship between the collected temperature and the maximum temperature in the N-1 segment.

18. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the method for determining the relationship between the collected temperature and the maximum temperature in the aerosol generating device according to any one of claims 11 to 17 is implemented.

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